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<RECORD 1>
Accession number:20172603860960
Title:Day-Night Variation and Source Apportionment of Carbonaceous Aerosols in
PM<inf>10</inf>During Spring and Summer of Lanzhou
Authors:Ma, Li (1, 3); Yu, Ye (1, 2); Wang, Bo (1); Zhao, Su-Ping (1); Li, Gang (4)
Author affiliation:(1) Northwest Institute of Eco-Environment and Resources, Chinese
Academy of Sciences, Lanzhou; 730000, China; (2) Pingliang Land Surface Process &
Severe Weather Research Station, Chinese Academy of Sciences, Pingliang; 744015, China;
(3) College of Resources and Environment, University of Chinese Academy of Sciences,
Beijing; 100049, China; (4) Institute of Arid Meteorology, China Meteorological
Administration, Lanzhou; 730020, China
Corresponding author:Yu, Ye(yyu@lzb.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1289-1297
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The purpose of this study was to investigate the characteristics and source
apportionment of carbonaceous aerosols in PM<inf>10</inf>for the daytime and nighttime
during spring and summer over Lanzhou. The samples were collected from 1 April 2015 to 30
August 2015, daytime samples were collected during 08:00 to 20:00 and nighttime samples
during 20:00 to 08:00 on the next day, and organic carbon (OC) and elemental carbon (EC)
concentrations were measured. The results showed that PM<inf>10</inf>, OC and EC
concentrations were (136.0±84.3), (12.4±3.2), (2.3±0.7)
μg·m<sup>-3</sup>during the daytime, and (196.0±109.2),
(16.0±5.3), (5.0±2.1) μg·m<sup>-3</sup>during the nighttime. The
mass concentrations of PM<inf>10</inf>, OC and EC in the nighttime were higher than those
during the daytime. The ratios of secondary organic carbon to total organic carbon were
higher in the daytime than nighttime, suggesting that the secondary organic carbon
pollution was more serious in the daytime. In sand-dust weather, the concentrations of
PM<inf>10</inf>and OC were higher than those in non-dust weather, while the EC
concentration was close to that in non-dust weather. Secondary organic carbon and total
carbon aerosols were higher in sand-dust weather, but the contribution to the
PM<inf>10</inf>was relatively low. In addition, principal component analysis on the eight
carbon fractions of non-dust weather indicated that coal combustion, vehicle exhaust and
biomass burning were the major sources for carbonaceous aerosol during the daytime, while
coal combustion, dust, diesel exhaust and biomass burning played important roles in the
nighttime. © 2017, Science Press. All right reserved.
Number of references:41
Main heading:Organic carbon
Controlled terms:Aerosols - Carbon - Coal combustion - Coal dust - Dust - Particles
(particulate matter) - Principal component analysis
Uncontrolled terms:Biomass-burning - Carbonaceous aerosol - Elemental carbon - Mass
concentration - Secondary organic carbon - Source apportionment - Total Organic Carbon -
Vehicle exhausts
Classification code:451.1 Air Pollution Sources - 521 Fuel Combustion and Flame
Research - 524 Solid Fuels - 804 Chemical Products Generally - 804.1 Organic Compounds
- 922.2 Mathematical Statistics - 951 Materials Science
DOI:10.13227/j.hjkx.201608156
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 2>
Accession number:20172603861005
Title:Forms Distribution and Ecotoxicity of Three Forms of Sulfonamides in Root-Soil
Interface of Maize
Authors:Jin, Cai-Xia (1); Si, Xiao-Wei (1, 2); Wang, Wan-Feng (1); Wang, Chun-Feng (1);
Wang, Zi-Ying (1); Zhang, Qin-Wen (1); Wang, Wan (2)
Author affiliation:(1) Henan Key Laboratory of Environmental Pollution Control, School of
Environment, Henan Normal University, Xinxiang; 453007, China; (2) Judicial
Authentication Center of Ecological Environmental Damage of Henan, Zhengzhou; 450011,
China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1683-1688
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Forms distribution and ecotoxicity of sulfonamides in root-soil interface of
maize were studied by chemical analysis and luminescent bacteria toxicity assay. The
results indicated that the water soluble residues were the main form in rhizosperic
soils, and the organic solvent extractable residues were the main form in far-rhizosperic
soils. The three forms of sulfonamides showed relatively lower toxicity to luminescent
bacteria with the relative inhibition rates less than 30%. The toxicity of water soluble
residues was lower than that of the organic solvent extractable residues, and the bound
residues showed the lowest toxicity to luminescent bacteria. The contents and relative
inhibition rates of water soluble residues in rhizosperic soils were higher than those in
far-rhizosperic soils, while the contents and relative inhibition rates of organic
solvent extractable and bound residues in rhizosperic soils were lower than those in
far-rhizosperic soils. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Toxicity
Controlled terms:Amides - Bacteria - Chemical analysis - Forming - Luminescence - Organic
solvents - Soils - Solvents - Sulfur compounds
Uncontrolled terms:Bound residues - Ecotoxicity - Inhibition rate - Luminescent bacteria
- Soil interfaces - Sulfonamides - Toxicity assays - Watersoluble
Classification code:461.7 Health Care - 483.1 Soils and Soil Mechanics - 741.1
Light/Optics - 803 Chemical Agents and Basic Industrial Chemicals - 804.1 Organic
Compounds
Numerical data indexing:Percentage 3.00e+01%
DOI:10.13227/j.hjkx.201606036
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 3>
Accession number:20172603860973
Title:Effects of Coastal Organic Pollution on Bacterioplankton Community in Sanmen Bay
Authors:Dai, Wen-Fang (1, 2); Guo, Yong-Hao (1); Yu, Wei-Na (1, 2); Xiong, Jin-Bo (1, 2)
Author affiliation:(1) School of Marine Sciences, Ningbo University, Ningbo; 315211,
China; (2) Collaborative Innovation Center for Zhejiang Marine High-Efficiency and
Healthy Aquaculture, Ningbo; 315211, China
Corresponding author:Xiong, Jin-Bo(xiongjinbo@nbu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1414-1422
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Coastal organic pollution has become a serious problem, thus it is imperative to
assess the potential effects on the marine environment. The microbes are generally the
first responders to environmental perturbation, which may serve as biological indicators
for pollution levels. In this study, we collected surface seawater samples from Sanmen
Bay and adjacent Yushan Reserve. Using an Illumina sequencing based analysis of bacterial
16S rRNA gene, we explored the effect of organic pollution on the bacterioplankton
community compositions (BCCs). The results showed that the organic pollution (A) was
4.57±2.41 at Sanmen Bay, which was significantly higher (P<0.001) than that in
Yushan Reserve (0.43±0.74). The bacterial diversity and community compositions
differed significantly between the two locations. Specifically, the relative abundance of
Actinobacteria, α-Proteobacteria, β-Proteobacteria, SAR406 in Sanmen Bay was
significantly higher than that in Yushan Reserve, while Bacteroidetes, Cyanobacteria,
Planctomycetes exhibited an opposite change pattern. A multivariate regression tree
analysis showed that the bacterial diversity was primarily affected by water pH, organic
pollution and chlorophyll a levels, which respectively explained 27.7%, 15.6% and 6.7%
variance in bacterial diversity. A redundancy analysis (RDA) revealed that the
bacterioplankton community was significantly controlled by pH, salinity and organic
pollution, which cumulatively explained 14.8% of the variation in BCCs. In addition, the
geographic distance was significantly (P<0.001) correlated with BCCs, accounting for
4.42% variance, which suggested that the spatial distribution of bacterioplankton
community was non-random. Moreover, this study screened 23 sensitive bacterial families,
whose relative abundances were significantly associated the organic pollution. For a
given bacterial family, the change pattern of relative abundance was consistent with its
known function, thus holding the potential for indicating organic pollution levels. To
conclude, this study showed that the increasing coastal organic pollution had altered
BCCs, and enriched the relative abundances of potential pathogens. Furthermore, the
sensitive bio-indicators were screened for evaluating the increasing organic pollution
level. © 2017, Science Press. All right reserved.
Number of references:49
Main heading:Water pollution
Controlled terms:Marine pollution - Pollution - Redundancy - Regression analysis - RNA
Uncontrolled terms:Bio-indicative bacterial family - Community composition - Driving
factors - Organic pollution - Redundancy analysis
Classification code:453 Water Pollution - 461.2 Biological Materials and Tissue
Engineering - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 1.48e+01%, Percentage 1.56e+01%, Percentage 2.77e+01%,
Percentage 4.42e+00%, Percentage 6.70e+00%
DOI:10.13227/j.hjkx.201610003
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 4>
Accession number:20172603860999
Title:N<inf>2</inf>O Consumption Ability of Submerged Paddy Soil and the Regulatory
Mechanism
Authors:Wang, Ling (1, 2); Xing, Xiao-Yi (1, 2); Qin, Hong-Ling (1); Liu, Yi (1); Wei,
Wen-Xue (1)
Author affiliation:(1) Taoyuan Station of Agro-Ecology Research, Institute of Subtropical
Agriculture, Chinese Academy of Sciences, Changsha; 410125, China; (2) University of
Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Wei, Wen-Xue(wenxuewei@isa.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1633-1639
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A large number of researches showed that the N<inf>2</inf>O negative emissions
from flooding paddy fields, peatlands and other wetlands ecosystem were frequent and
considerable, which is of great significance on alleviating the greenhouse gas effect.
However, there are few reports about the transformation and microbial mechanism of
N<inf>2</inf>O between atmosphere and paddy soil. The slurry of surface paddy soil (0-5
cm) was incubated in laboratory conditions, and the effect of enhanced N<inf>2</inf>O
concentrations in headspace on the N<inf>2</inf>O consumption capacity of submerged paddy
soil and the response of nosZ gene abundance were explored. The results showed that,
paddy soil under flooding and anaerobic conditions harbored very strong potential of
N<inf>2</inf>O reduction along with a relatively high nosZ gene abundance
(10<sup>8</sup>copies·g<sup>-1</sup>dry soil at DNA level). Regression analysis
presented the N<inf>2</inf>O concentrations in headspace were positively correlated
(r<sup>2</sup>=1, P<0.001) to the N<inf>2</inf>O consumption rates of paddy soil
slurry, indicating the high N<inf>2</inf>O concentration could stimulate the
N<inf>2</inf>O consumption power, to a very high rate of 4 567.99 μg·
(m<sup>2</sup>·h)<sup>-1</sup>. Meanwhile, there were no significant differences
in the high abundance of nosZ gene among N<inf>2</inf>O treatments, demonstrating the
nosZ gene abundance at DNA level might not be the main controller of N<inf>2</inf>O
consumption ability in submerged paddy soil and further study on the key microbial factor
is needed. © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Underwater soils
Controlled terms:Floods - Gas emissions - Genes - Greenhouse effect - Greenhouse gases -
Regression analysis - Soils - Wetlands
Uncontrolled terms:Anaerobic conditions - Consumption rates - Laboratory conditions - N2O
reduction - NosZ - Paddy fields - Paddy soils - Regulatory mechanism
Classification code:451 Air Pollution - 451.1 Air Pollution Sources - 461.2 Biological
Materials and Tissue Engineering - 483.1 Soils and Soil Mechanics - 922.2 Mathematical
Statistics
Numerical data indexing:Size 0.00e+00m to 5.00e-02m
DOI:10.13227/j.hjkx.201609138
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 5>
Accession number:20172603860971
Title:Vertical Stratification Characteristics of Dissolved Oxygen and Phytoplankton in
Thousand-Island Lake and Their Influencing Factors
Authors:Yu, Yan (1); Liu, De-Fu (2, 3); Yang, Zheng-Jian (2, 3); Zhang, Jia-Lei (2, 3);
Xu, Ya-Qian (2); Liu, Jin-Gao (2); Yan, Guang-Han (1)
Author affiliation:(1) College of Hydraulic and Environmental Engineering, China Three
Gorges University, Yichang; 443002, China; (2) College of Civil and Environmental
Engineering, Hubei University of Technology, Wuhan; 430068, China; (3) Key Laboratory of
Ecological Remediation of Lakes and Rivers and Algal Utilization of Hubei Province,
Wuhan; 430068, China
Corresponding author:Yang, Zheng-Jian(656637841@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1393-1402
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:According to the data collected from the five monitoring sites in front of the
dam in Thousand-island Lake in September 2015, the vertical distribution characteristics
of dissolved oxygen (DO), water temperature, pH, turbidity, conductivity and
phytoplankton were analyzed. The influencing factors of special stratification of DO and
vertical distribution of phytoplankton were also discussed. The results showed that: (1)
The vertical distribution of DO presented “the surface is higher than the
underlying” mode. DO ranged from 1.95 mg·L<sup>-1</sup>to 8.25
mg·L<sup>-1</sup>and the average concentration was 5.10 mg·L<sup>-1</sup>.
Low-oxygen zones appeared between 12 m and 20 m and the minimum concentration was 1.95
mg·L<sup>-1</sup>at 17 m. The concentration of DO maintained at a high level
between 0 m and 12 m and the vertical variance was small. Sudden drop of DO occurred
between 12 m and 20 m and there was an anoxic zone (<4.0 mg·L<sup>-1</sup>).
The concentration of DO returned to normal level between 20 m and 38 m. Then it reduced
under 38m as the water depth increased. The vertical distribution of pH showed the same
trend with that of DO and their sudden change regions appeared in the same zone. (2)
Vertical phytoplankton biomass displayed significant difference. The phytoplankton
biomass of S1, S2 and S3 presented: mid-layer>surface>bottom. But S4, S5 presented:
bottom>surface>mid-layer. In addition, the depth between 20 m and 30 m was the best
for the growth of phytoplankton. (3) The correlation analysis showed that DO and water
temperature in the thermocline were significantly correlative. The range and degree of
low-oxygen zones in Thousand-island Lake was determined by physical processes like
thermal stratification of water and direct or indirect effects of the plankton.
Phytoplankton and DO, pH showed significant negative correlation. The phytoplankton was
mainly influenced by turbulent mixing and DO stratification in the surface layer while it
was mainly influenced by light intensity at the bottom. © 2017, Science Press. All
right reserved.
Number of references:51
Main heading:Dissolved oxygen
Controlled terms:Biochemical oxygen demand - Dissolution - Lakes - Oxygen - Phytoplankton
- Temperature
Uncontrolled terms:Average concentration - Chemical factors - Correlation analysis -
Negative correlation - Phytoplankton biomass - Vertical distributions - Vertical
stratification - Water temperatures
Classification code:471 Marine Science and Oceanography - 641.1 Thermodynamics - 802.3
Chemical Operations - 804 Chemical Products Generally
Numerical data indexing:Mass_Density 1.95e-03kg/m3, Mass_Density 1.95e-03kg/m3 to 8.25e-
03kg/m3, Mass_Density 5.10e-03kg/m3, Size 0.00e+00m to 1.20e+01m, Size 1.20e+01m to
2.00e+01m, Size 1.70e+01m, Size 2.00e+01m to 3.00e+01m, Size 2.00e+01m to 3.80e+01m, Size
3.80e+01m
DOI:10.13227/j.hjkx.201606085
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 6>
Accession number:20172603860968
Title:Hanfeng Pre-reservoir Commissioning Time Variation Feature of the Hydrology and
Water Quality in Three Gorges Reservoir
Authors:Yang, Bing (1); He, Bing-Hui (1); Wang, De-Bao (1)
Author affiliation:(1) Key Laboratory of Eco-environments in the Three Gorges Reservoir
Region, College of Resources and Environment, Southwest University, Chongqing; 400715,
China
Corresponding author:He, Bing-Hui(hebinghui@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1366-1375
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Hanfeng Pre-reservoir is very rare in the world which is specially designed to
reduce the impact of Fluctuating Zone, and it is formed in Hanfeng Lake of Three Gorges
reservoir. The Hanfeng Pre-reservoir has many special hydrological characteristics and
ecological environment features based on its unique “pre-reservoir” control
mode, the wide seasonal wetland of Fluctuating Zone, the huge life pollution and
agricultural pollution, and the pressure of huge city and excessive population. HanFeng
Lake has a variety of morphological features such as lakes, rivers, and other backwater
bay, for the effect of water level regulation in Three Gorges, since the successful
commissioning of the Hanfeng Lake pre-dam system in 2015. The change of Hanfeng Lake
hydrology and water quality during the commissioning was divided into four periods by
combining Hydrological and Morphological Variation characteristics with Water quality
indicators time clustering analysis: May to August as T1 (river period); January, March
and November to December as T2 (lake period); February, April and September as T3 (water
level fluctuation period); October as T4 (algal blooms period) in 2015. Principal
component analysis and stepwise regression analysis showed that Eutrophication of Hanfeng
Lake was dominated by different dominant components at different times and the water
quality index factor which has a significant effect on the Chl-a was also different.
Cumulative contribution rates of principal components were 82.93%, 77.61%, 78.32%, 88.40%
for each period, respectively. The main water quality indicators of T1 (river period)
were DP, TP, SD, pH and the significant influencing index of Chl-a was PC<inf>2</inf>, so
Chl-a was mainly affected by water nitrogen content. The main water quality indicators of
T2 (lake period) were TN, DN, DP, TP, NO<inf>3</inf><sup>-</sup>-N and the significant
influencing index of Chl-a was PC<inf>1</inf>, so Chl-a was mainly affected by water
eutrophication including nitrogen and phosphorus nutrient status. The main water quality
indicators of T3 (water level fluctuation period) were SD, NH<inf>4</inf><sup>+</sup>-N,
DN, T and the significant influencing index of Chl-a was PC<inf>3</inf>. so Chl-a was
mainly affected by water level fluctuation. The main water quality indicators of T4
(algal blooms period) were TN, DN, DO, NH<inf>4</inf><sup>+</sup>-N, pH, permanganate
index, H, NO<inf>3</inf><sup>-</sup>-N and the significant influencing index of Chl-a was
PC<inf>3</inf>. so Chl-a was mainly affected by flow rate and hydrodynamic conditions. As
mentioned in the review, the frequent and significant water level changes during the
commissioning of Hanfeng Lake were the important factors influencing the change of
hydrological and water quality characteristics. © 2017, Science Press. All right
reserved.
Number of references:29
Main heading:Reservoirs (water)
Controlled terms:Eutrophication - Hydrology - Lake pollution - Lakes - Multivariant
analysis - Nitrogen - Pollution - Pollution control - Principal component analysis -
Quality control - Regression analysis - River pollution - Rivers - Water levels - Water
quality - Water resources
Uncontrolled terms:Commissioning - Hydrological characteristics - Multivariate
statistical analysis - Nitrogen and phosphorus - Stepwise regression analysis - Variation
characteristics - Water quality characteristics - Water quality indicators
Classification code:441.2 Reservoirs - 444 Water Resources - 445.2 Water Analysis -
453 Water Pollution - 804 Chemical Products Generally - 913.3 Quality Assurance and
Control - 922 Statistical Methods - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 7.76e+01%, Percentage 7.83e+01%, Percentage 8.29e+01%,
Percentage 8.84e+01%
DOI:10.13227/j.hjkx.201607173
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 7>
Accession number:20172603860994
Title:Pollution Characteristics and Source Analysis of Polycyclic Aromatic Hydrocarbons
in Agricultural Soils from Shandong
Authors:Ge, Wei (1); Cheng, Qi-Qi (2); Chai, Chao (2); Zeng, Lu-Sheng (2); Wu, Juan (2);
Chen, Qing-Hua (2); Zhu, Xiang-Wei (2); Ma, Dong (2)
Author affiliation:(1) College of Life Science, Qingdao Agricultural University, Qingdao;
266109, China; (2) College of Resources and Environment, Qingdao Agricultural University,
Qingdao; 266109, China
Corresponding author:Chai, Chao(chaichao1999@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1587-1596
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous environmental
contaminants that originate mainly from anthropogenic sources. PAHs have elicited much
concern because they exhibit strong toxic, carcinogenic, and mutagenic properties.
Agricultural soil is at risk of PAH contamination mainly caused by atmospheric
depositions, wastewater irrigation, or organic substances and biowaste applied as
fertilizers. The surface agricultural soils were collected from Shandong in July 2015,
and measured for 16 US EPA priority PAHs using high performance liquid chromatography
with UV and fluorescence detector. The content and composition of PAHs were analyzed. The
differences of PAHs between soils from the field for growing crops and from vegetable
greenhouses, and between soils from point sources and from non-point sources were
compared. The sources of PAHs were determined with methods of ratio between PAHs and
positive matrix factorization (PMF), and the risks of PAHs were assessed. The results
showed that the total content of 16 PAHs (∑16PAHs) ranged from 111.5
ng·g<sup>-1</sup>to 2 744.1 ng·g<sup>-1</sup>, with the mean of 556.3
ng·g<sup>-1</sup>. The content of 3-ring PAHs was relatively high, with the mean
of 201.5 ng·g<sup>-1</sup>; while the contents of 2-ring and 6-ring PAHs were
relatively low, with the mean of 39.3 ng·g<sup>-1</sup>and 43.4 ng·g<sup>-
1</sup>, respectively. According to the contamination classification in Poland, 71% of
the samples in Shangdong were weakly contaminated. Compared with other areas in China,
the content of PAHs in the agricultural soils in Shandong was in the middle range.
Acenaphthene, fluorine, and fluoranthene were the major PAH compounds, accounting for
more than 10% of the total PAHs; while the contribution of indeno (1,2,3-cd) pyrene was
low. The content of ∑16PAHs and contribution of 7 carcinogenic PAHs were
significantly higher in soils polluted by point sources than those in soils from non-
point sources. Moreover, the contribution of PAHs with 2-3 rings was significantly higher
in soils from non-point sources, while the contribution of PAHs with 4-6 rings was
significantly higher in soils polluted by point sources. There was no significant
difference in soils from vegetable greenhouses and from adjacent field soils, and the
contribution of PAHs with 3-4 rings was high. The PAH isomer pair ratios of Ant/(Ant
+Phe), Flu/(Flu+Pyr), BaA/(BaA+Chr), and InP/(InP+BP) were utilized as molecular indices
to elucidate the possible PAH sources, and the results suggested that the PAHs in the
soils were mainly from combustion. To quantitatively assess the contribution of various
sources to PAH contamination, PMF was used to analyze the sources. The sources of PAHs
were combustion of coal biomass, oil combustion from traffic, coking, and petroleum
pollution, with contribution of 42.7%, 19.3%, 22.8% and 15.2%, respectively. Toxic
equivalency factors were used to evaluate PAH contamination in the soils, and the
carcinogenicity of other PAHs relative to BaP was quantified to estimate the BaP-
equivalent concentration (TEQ<inf>BaP</inf>). The TEQ<inf>BaP</inf>of 16 PAHs
(∑16TEQ<inf>Bap</inf>) in soils from non-point sources and vegetable greenhouses was
31.69 and 44.47 ng·g<sup>-1</sup>, respectively, which were below the safe value
in Canadian soil quality guidelines. However, the ∑16TEQ<inf>Bap</inf>in some field
soils from point sources exceeded the safe value, indicating that there were potential
risks in the soils from point sources in Shandong. © 2017, Science Press. All right
reserved.
Number of references:46
Main heading:Soil pollution
Controlled terms:Agriculture - Aromatic compounds - Aromatic hydrocarbons - Aromatization
- Coal combustion - Coking - Combustion - Contamination - Environmental Protection Agency
- Factorization - Fluorescence - Greenhouses - High performance liquid chromatography -
Hydrocarbons - Liquid chromatography - Meteorological problems - Pollution - Polycyclic
aromatic hydrocarbons - Risk assessment - Risks - Soils - Vegetables
Uncontrolled terms:Atmospheric depositions - Environmental contaminant - Equivalent
concentrations - Polycyclic aromatic hydrocarbons (PAHS) - Positive Matrix Factorization
- Shandong - Source analysis - Toxic equivalency factors
Classification code:443.1 Atmospheric Properties - 454.2 Environmental Impact and
Protection - 483.1 Soils and Soil Mechanics - 524 Solid Fuels - 741.1 Light/Optics -
802.2 Chemical Reactions - 804.1 Organic Compounds - 821 Agricultural Equipment and
Methods; Vegetation and Pest Control - 914.1 Accidents and Accident Prevention - 921
Mathematics
Numerical data indexing:Percentage 1.00e+01%, Percentage 1.52e+01%, Percentage 1.93e+01%,
Percentage 2.28e+01%, Percentage 4.27e+01%, Percentage 7.10e+01%
DOI:10.13227/j.hjkx.201608199
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 8>
Accession number:20172703864524
Title:Tempo-spatial Variations and Influential Factors of Carbon Dioxide Emissions from
the Geheyan Reservoir over the Qingjiang River Basin, China
Authors:Zhao, Deng-Zhong (1); Tan, De-Bao (1); Li, Chong (2); Shen, Shao-Hong (1)
Author affiliation:(1) Changjiang River Scientific Research Institute (CRSRI), Changjiang
Water Resources Commission, Wuhan; 430010, China; (2) China Three Gorges Corporation,
Beijing; 100038, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:954-963
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Greenhouse gas emission from aquatic ecosystem will affect climate change on the
regional and global scale. So large river interception project which affects the carbon
cycle model and greenhouse gas emission from aquatic ecosystem has provoked more and more
attentions in recent years. In order to understand and evaluate the effects of typical
hydropower project construction on the aquatic ecosystem and carbon cycle, the Geheyan
Reservoir, a typical river interception project, was selected as a typical case in this
paper for measuring carbon dioxide fluxes from interface between water and atmosphere
from March, 2015 to February, 2016. The integration of the online gas analyzer and
floating box was used to obtain carbon dioxide fluxes from interface between water and
atmosphere. Data was obtained over the before dam, upstream, tributary, drawdown area and
bay area respectively for understanding the spatial Heterogeneity of carbon dioxide
fluxes. Data analysis showed that yearly mean fluxes of carbon dioxide from the Geheyan
Reservoir was (55.6918±66.3329) mg·(m<sup>2</sup>·h)<sup>-
1</sup>during measurement, which indicated that the temporal distribution was higher in
winter and lower in other seasons and the spatial variation was higher in typical bay and
lower before dam as well as drawdown zone over the reservoir. Moreover, the seasonal
variation of carbon dioxide fluxes from the interface between water and atmosphere was
very stable at Yuxiakou measurement points as a typical background area of the reservoir,
which was unexpectedly higher than those before dam and drawdown zone in the most months
during measurement. The results from data analysis also indicated that the spatial and
temporal variation of carbon dioxide fluxes from the Geheyan Reservoir was affected by
water quality parameters such as dissolved oxygen, chlorophyll, pH, water temperature and
conductivity and carbon in water, but the relationship between carbon dioxide fluxes and
other parameter was very different within each season and impound period. So the results
above will provide more supports for understanding the import pathway and transfer of
aquatic carbon cycle caused by large river interception project in China. © 2017,
Science Press. All right reserved.
Number of references:36
Main heading:Phase interfaces
Controlled terms:Aquatic ecosystems - Biochemical oxygen demand - Carbon dioxide -
Climate change - Data handling - Dissolved oxygen - Ecology - Ecosystems - Gas emissions
- Global warming - Greenhouse gases - Information analysis - Quality control -
Reservoirs (water) - Rivers - Water levels - Water quality - Watersheds
Uncontrolled terms:Carbon cycles - Carbon dioxide emissions - Carbon dioxide flux -
Qingjiang river basins - Spatial and temporal distribution - Spatial and temporal
variation - Temporal distribution - Water quality parameters
Classification code:441.2 Reservoirs - 443.1 Atmospheric Properties - 444.1 Surface
Water - 445.2 Water Analysis - 451.1 Air Pollution Sources - 454.3 Ecology and
Ecosystems - 723.2 Data Processing and Image Processing - 801.4 Physical Chemistry -
804.2 Inorganic Compounds - 903.1 Information Sources and Analysis - 913.3 Quality
Assurance and Control
DOI:10.13227/j.hjkx.201607086
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 9>
Accession number:20172703864516
Title:Online Source Analysis of Particulate Matter (PM<inf>2.5</inf>) in a Heavy
Pollution Process of Shijiazhuang City During Heating Period in 2015
Authors:Lu, Na (1); Li, Zhi-Guo (1); Zhou, Jing-Bo (1); Zhao, Xin (1); Yang, Li-Li (1);
Feng, Yuan (1); Jin, Wei (1)
Author affiliation:(1) Shijiazhuang Environmental Monitoring Center, Shijiazhuang;
050022, China
Corresponding author:Jin, Wei(jiwei65815@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:884-893
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In recent years, more and more public attention has been paid to the problem of
air pollution during the heating period in North China. This article took a heavy
pollution process of Shijiazhuang district from Nov. 24th to Dec. 4th in 2015 as an
example, and analyzed comprehensively the source apportionment in different periods, size
distribution of the PM<inf>2.5</inf>from each source in different periods, the
characteristics of mass spectra of the main emission sources and the meteorological
conditions with the method of real-time online source analysis. It turned out: the main
sources of pollutants were coal combustions, industrial discharges, vehicle exhausts and
secondary inorganic reactions. With the help of meteorological condition of low pressure
and low wind speed, the PM<inf>2.5</inf>mainly produced by coal combustions and
industrial discharges accumulated heavily and went through the second stage conversion,
leading to this heavy air pollution. The main particulate matters from coal combustions
were the mixed carbons; the main particulate matters from industrial discharges were
metals; the main particulate matters from vehicle exhausts were elemental carbon and
manganese metal; the main particulate matters from pure secondary inorganic sources were
secondary inorganic ions; the main particulate matters from dust pollution were aluminum,
calcium, iron and silicate minerals; the main particulate matters from biomass fuel
combustions were levoglucosan; the feature signal from restaurant discharges was organic
acid. Different from the distribution before and after the heavy pollution period, the
particulate matters from the 8 pollution sources presented even distribution during the
heavy pollution period. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Air pollution
Controlled terms:Carbon - Coal - Coal combustion - Coal dust - Fuels - Mass spectrometers
- Mass spectrometry - Metal analysis - Organic minerals - Pollution - Silicate minerals
- Silicates - Size distribution
Uncontrolled terms:Industrial discharges - Inorganic reactions - Mass spectra -
Meteorological condition - Online sources - Particulate Matter - Shijiazhuang City -
Source apportionment
Classification code:451 Air Pollution - 482.2 Minerals - 524 Solid Fuels - 801
Chemistry - 804 Chemical Products Generally - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201605058
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 10>
Accession number:20172703864529
Title:Speciation and Ecological Risk of Heavy Metals in Surface Sediments from Jiulong
River
Authors:Lin, Cheng-Qi (1); Hu, Gong-Ren (1, 2); Yu, Rui-Lian (1); Han, Lu (1)
Author affiliation:(1) College of Chemical Engineering, Huaqiao University, Xiamen;
361021, China; (2) State Key Laboratory of Environmental Geochemistry, Institute of
Geochemistry, Chinese Academy of Sciences, Guiyang; 550081, China
Corresponding author:Yu, Rui-Lian(ruiliany@hqu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1002-1009
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Speciation characteristics of fifteen heavy metals in seventeen surface
sediments from Jiulong River was analyzed using the modified BCR protocol and dilute
HNO<inf>3</inf>method, respectively. The results of the modified BCR protocol showed that
most of the elements (Fe, Ni, V, Tl, Ba, Sb, Ga, Cr and Sr) existed mainly in residual
fractions, and extractable fraction was dominant for Mn (83.8%), followed by Cd, Pb, Zn,
Co and Cu (80.0%, 75.5%, 74.3%, 70.8% and 57.7%). The results of dilute
HNO<inf>3</inf>method showed that the proportions of the dilute HNO<inf>3</inf>-
extractable fractions of Pb, Mn, Cd, Co, Zn and Cu were higher (70.4%, 65.4%, 58.7%,
48.4%, 44.5% and 45.5%). The assessment results of RSP (ratio of secondary phase to
primary phase) indicated that Pb, Mn, Cd, Co, Zn and Cu in surface sediments of Jiulong
River had higher ecological risks. Both extraction methods had merits and demerits
respectively. In general, the dilute HNO<inf>3</inf>method is enough to analyze the
bioavailability and ecological risk of heavy metals in sediments. © 2017, Science
Press. All right reserved.
Number of references:26
Main heading:River pollution
Controlled terms:Biochemistry - Ecology - Heavy metals - Lead - Manganese - Risk
assessment - Rivers - Sediments - Strontium - Surficial sediments - Zinc
Uncontrolled terms:Bioavailability - Dilute HNO<inf>3</inf>method - Ecological risks -
Extraction method - Jiulong River - Residual fraction - Secondary phase - Surface
sediments
Classification code:453 Water Pollution - 454.3 Ecology and Ecosystems - 483 Soil
Mechanics and Foundations - 531 Metallurgy and Metallography - 543.2 Manganese and
Alloys - 546.1 Lead and Alloys - 546.3 Zinc and Alloys - 549.2 Alkaline Earth Metals -
801.2 Biochemistry - 914.1 Accidents and Accident Prevention
Numerical data indexing:Percentage 4.45e+01%, Percentage 4.55e+01%, Percentage 4.84e+01%,
Percentage 5.77e+01%, Percentage 5.87e+01%, Percentage 6.54e+01%, Percentage 7.04e+01%,
Percentage 7.08e+01%, Percentage 7.43e+01%, Percentage 7.55e+01%, Percentage 8.00e+01%,
Percentage 8.38e+01%
DOI:10.13227/j.hjkx.201607087
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 11>
Accession number:20171003409530
Title:Characteristics of methane emission from urban traffic in Nanjing
Authors:Zhang, Xue (1, 2); Hu, Ning (1, 2); Liu, Shou-Dong (1, 2); Wang, Shu-Min (1, 2);
Gao, Yun-Qiu (1, 2); Zhao, Jia-Yu (1, 2); Zhang, Zhen (1, 2); Hu, Yong-Bo (1, 2); Lee,
Xu-Hui (1, 2); Zhang, Guo-Jun (1, 2)
Author affiliation:(1) Yale-NUIST Center on Atmospheric Environment, Nanjing University
of Information Science & Technology, Nanjing; 210044, China; (2) Collaborative
Innovation of Center of Atmospheric Environment and Equipment Technology, Nanjing
University of Information Science & Technology, Nanjing; 210044, China
Corresponding author:Liu, Shou-Dong(lsd@nuist.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:469-475
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Urban traffic is an important source of greenhouse gases such as CH<inf>4</inf>.
The observations on CH<inf>4</inf>are the basis for quantitative analysis of urban carbon
emissions. Taken into consideration the weekly and daily changing characteristics of
urban traffic, we conducted experiments to analyze the features of traffic
CH<inf>4</inf>emission and its influential factors. The experiments were conducted on 3
main roads in Nanjing on Oct. 17, 18, 20, 23, 2014 with 5 periods of observation per day,
and in Nanjing Yangtze River tunnel in the morning and at night of Sep.11 2014. The
results showed that: (1)The average concentration of CH<inf>4</inf>on the urban main road
of Nanjing city was greater than that of the background atmosphere. Affected by traffic
conditions, the spatial difference of ΔCH<inf>4</inf>concentration was significant
on three typical main roads. ΔCH<inf>4</inf>concentration's diurnal variation
showed inverted “W” type, and its peak appeared in the morning and evening
rush hours. (2) Due to the “piston wind” in the tunnel, the
CH<inf>4</inf>concentration in Nanjing Yangtze River tunnel gradually increased from the
inlet to the outlet and the difference of concentration between the inlet and the outlet
was 0.21×10<sup>-6</sup>-0.38×10<sup>-6</sup>. (3)There was a good linear
correlation between CH<inf>4</inf>concentration and CO<inf>2</inf>concentration. The
atmospheric ΔCH<inf>4</inf>∶ΔCO<inf>2</inf>value of urban main road in
Nanjing was 0.009 1 and the atmospheric
ΔCH<inf>4</inf>∶ΔCO<inf>2</inf>value of Nanjing Yangtze River Tunnel
was 0.000 47-0.001 4. (4)Traffic volume and the proportion of natural gas vehicles were
the main factors influencing atmospheric ΔCH<inf>4</inf>concentration and
ΔCH<inf>4</inf>∶ΔCO<inf>2</inf>. © 2017, Science Press. All right
reserved.
Number of references:27
Main heading:Transportation
Controlled terms:Carbon - Carbon dioxide - Greenhouse gases - Natural gas - Natural gas
vehicles - Rivers - Roads and streets - Tunnels
Uncontrolled terms:Average concentration - Diurnal variation - Influential factors -
Linear correlation - Main roads - Spatial differences - Traffic conditions - Urban
traffic
Classification code:401.2 Tunnels and Tunneling - 406.2 Roads and Streets - 432
Highway Transportation - 451.1 Air Pollution Sources - 522 Gas Fuels - 804 Chemical
Products Generally - 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201606090
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 12>
Accession number:20171003409558
Title:Concentration, sources and ecological risks of PAHs of different land use types in
Shenfu New City
Authors:Wang, Jing (1, 2); Liu, Ming-Li (1, 2); Zhang, Shi-Chao (1, 2); Lu, Yin-Tao (1,
2); Yao, Hong (1, 2)
Author affiliation:(1) School of Civil Engineering, Beijing Jiaotong University, Beijing;
100044, China; (2) Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water
Quality Safeguard, Beijing; 100044, China
Corresponding author:Yao, Hong(yaohongts@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:703-710
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The concentration level of polycyclic aromatic hydrocarbon (PAHs) in topsoil
from Shenfu New City in urbanization was studied. 54 topsoil samples were collected from
Shenfu New City and 4 different land uses (urban land, rural land, forest land,
cultivated land) were included. The concentration of PAHs in different land uses was
analyzed, the sources of soil PAHs were analyzed by using diagnostic ratios and principal
component analysis, and the ecological risks were calculated using toxic equivalency
concentrations of BaP and the incremental lifetime cancer risk(ILCR)model. Results
indicated that the concentrations of ∑PAHs in urban land, cultivated land, rural land
and forest land were in the range of 184-18 276, 230-14 102, 151-3 205, 303-2 980
μg·kg<sup>-1</sup>, respectively. Four land uses had similar sources, the main
sources were coal combustion and traffic emission. According to the calculation of
ecological risks, there were potential health risks for residents in Shenfu New City,
especially urban land, meanwhile, residents were easily exposed to soil PAHs through
dermal contact. © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Polycyclic aromatic hydrocarbons
Controlled terms:Aromatic compounds - Aromatic hydrocarbons - Coal combustion - Ecology -
Elementary particle sources - Forestry - Health risks - Hydrocarbons - Land use -
Principal component analysis - Risk assessment - Soils
Uncontrolled terms:Concentration levels - Diagnostic ratios - Different land use types -
Ecological risks - Polycyclic aromatic hydrocarbons (PAHS) - Potential health risks -
Toxic equivalency - Traffic emissions
Classification code:403 Urban and Regional Planning and Development - 454.3 Ecology and
Ecosystems - 461.7 Health Care - 483.1 Soils and Soil Mechanics - 521 Fuel Combustion
and Flame Research - 524 Solid Fuels - 804.1 Organic Compounds - 914.1 Accidents and
Accident Prevention - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201607096
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 13>
Accession number:20171003409555
Title:Effects of free ammonia regulation on the performance of high solid anaerobic
digesters with dewatered sludge
Authors:Dai, Xiao-Hu (1); He, Jin (1); Yan, Han (1); Li, Ning (1); Ding, Yue-Ling (1);
Dong, Bin (1); Dai, Ling-Ling (1)
Author affiliation:(1) State Key Laboratory of Pollution Control and Resource Reuse,
College of Environmental Science and Engineering, Tongji University, Shanghai; 200092,
China
Corresponding author:Li, Ning(lining@tongji.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:679-687
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:High free ammonia nitrogen (FAN) is regarded as a main factor that inhibits
biogas production in high solid anaerobic digestion systems with dewatered sludge. Two
mesophilic semi-continuous anaerobic digesters fed with dewatered sludge (input total
solids=15%) were operated and their performance under different FAN concentrations by two
regulation methods including pH reduction and total ammonia nitrogen (TAN) promotion were
investigated. Results showed that when FAN was elevated from (400±174)
mg·L<sup>-1</sup>to (526±25) mg·L<sup>-1</sup>with the increase of
TAN, the daily biogas yield declined from (11.9±0.3) L·d<sup>-1</sup>to
(10.3±0.2) L·d<sup>-1</sup>. Meanwhile, volatile solids (VS) reduction rate
decreased by 33.7%. When FAN dropped from (330±99) mg·L<sup>-1</sup>to
(47±13) mg·L<sup>-1</sup>due to pH reduction, daily biogas yield declined
from (14.4±1.1) L·d<sup>-1</sup>to (10.8±0.3) L·d<sup>-
1</sup>and VS reduction rate decreased by 26.9%. The system performance was not enhanced
with the reduction of FAN. With the stop of pH regulation, FAN gradually raised again to
300 mg·L<sup>-1</sup>and digester performance recovered to the same as the
situation before regulation. The result suggested that inhibition occurred during pH
reduction. By 16S rRNA pyrosequencing analysis on bacterial and archaeal diversity and
quantitative PCR analysis aiming at methanogens, it was found that bacterial community
structure both changed obviously with obvious performance decline in the two digesters.
Excessive FAN (>500 mg·L<sup>-1</sup>) could change the main bacteria species
which degrade protein from Tepidimicrobium and Proteiniborus to Anaerobranca. On the
other hand, some carbohydrate and protein degrading bacteria were also inhibited by pH
reduction for FAN control, leading to the decline of hydrolysis rates of organic matters.
As a result, the shortage of substrate supply for the methanogens weakened the biogas
production of the digestion system. © 2017, Science Press. All right reserved.
Number of references:37
Main heading:Anaerobic digestion
Controlled terms:Ammonia - Bacteria - Biodegradation - Biogas - Dewatering - Digestive
system - Methanogens - Nitrogen - Polymerase chain reaction - Proteins - Pulp digesters
- RNA - Sludge digestion - Substrates
Uncontrolled terms:Ammonia inhibition - Anaerobic digester - Bacterial community
structure - Biogas production - Degrading bacteria - Free ammonia - High-solids - Total
ammonia nitrogens
Classification code:452.2 Sewage Treatment - 461.2 Biological Materials and Tissue
Engineering - 461.9 Biology - 522 Gas Fuels - 801.2 Biochemistry - 802.3 Chemical
Operations - 804 Chemical Products Generally - 811.1.2 Papermaking Equipment
Numerical data indexing:Mass_Density 3.00e-01kg/m3, Percentage 2.69e+01%, Percentage
3.37e+01%
DOI:10.13227/j.hjkx.201607137
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 14>
Accession number:20171003409569
Title:Isolation and identification of a chlorobenzene-degrading bacterium and its
degradation characteristics
Authors:Ye, Jie-Xu (1); Lin, Tong-Hui (1); Luo, Yu-Hao (1); Chen, Dong-Zhi (1); Chen,
Jian-Meng (1)
Author affiliation:(1) College of Environment, Zhejiang University of Technology,
Hangzhou; 310032, China
Corresponding author:Chen, Jian-Meng(jchen@zjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:802-808
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A bacterium strain LW26 which could utilize chlorobenzene (CB) as sole carbon
and energy source was isolated from a biotrickling filter reactor treating CB-
contaminated off-gas. Based on its morphological and physiological characteristics, as
well as the analysis of 16S rRNA gene sequence and Biolog test, the strain LW26 was
identified as Delftia tsuruhatensis. To our best knowledge, it is the first time that the
strain Delftia tsuruhatensis was applied for CB purification. In this study, the effects
of temperature, pH, initial CB concentration and Cl<sup>-</sup>concentration on the
biodegradation were investigated. The results showed that the optimal temperature and pH
for CB biodegradation were 25℃ and 7.0, respectively; the maximum CB tolerated
concentration for LW26 was as high as 500 mg·L<sup>-1</sup>; when the
concentration of Cl<sup>-</sup>was above 0.14 mol·L<sup>-1</sup>, the CB
degradation was significantly restrained. The degrading process of the strain LW26
followed the Haldane kinetic model and the maximum specific growth rate and the maximum
specific degradation rate were 0.42 h<sup>-1</sup>and 2.53 h<sup>-1</sup>,
respectively.GC-MS analysis of the metabolites revealed that CB was firstly converted to
o-chlorophenol by strain LW26. Combined with the activity of catechol dioxygenase, it can
be speculated that CB was finally mineralized to CO<inf>2</inf>, or converted to cell
biomass after processes of ortho cleavage, dechlorination and oxidation. © 2017,
Science Press. All right reserved.
Number of references:26
Main heading:Biodegradation
Controlled terms:Bacteria - Biofilters - Carbon - Carbon dioxide - Dechlorination -
Degradation - Enzyme kinetics - Metabolites - Phenols - RNA - Temperature
Uncontrolled terms:Chlorobenzene - Dechlorination and oxidations - Degradation
characteristics - Delftia tsuruhatensis - Effects of temperature - Isolation and
identification - Maximum specific growth rates - Physiological characteristics
Classification code:461.2 Biological Materials and Tissue Engineering - 461.8
Biotechnology - 641.1 Thermodynamics - 802.2 Chemical Reactions - 804 Chemical
Products Generally
Numerical data indexing:Molar_Concentration 1.40e+02mol/m3
DOI:10.13227/j.hjkx.201607198
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 15>
Accession number:20171003409537
Title:Temporal and spatial variations of dissolved inorganic carbon and its stable
isotopic composition in the surface stream of karst groundwater recharge
Authors:Li, Li (1, 2); Pu, Jun-Bing (1); Li, Jian-Hong (1); Zhang, Tao (1, 2)
Author affiliation:(1) Key Laboratory of Karst Dynamics, Institute of Karst Geology,
Chinese Academy of Geological Sciences, Guilin; 541004, China; (2) School of Geographical
Sciences, Southwest University, Chongqing; 400715, China
Corresponding author:Li, Jian-Hong(jianhongli1988@karst.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:527-534
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Stable carbon isotope of dissolved inorganic carbon
(δ<sup>13</sup>C<inf>DIC</inf>), which is mainly constituted by
HCO<inf>3</inf><sup>-</sup>in karst water, is widely used to trace the different sources
and influential factors of dissolved inorganic carbon (DIC). In order to understand the
distribution of DIC and δ<sup>13</sup>C<inf>DIC</inf>in subtropical karst area,
this paper researched the water chemistry and δ<sup>13</sup>C<inf>DIC</inf>in a
karst surface stream in detail, which is fed by Guancun subterranean stream in Liuzhou
City, Guangxi Province, in the southwest of China. The results showed that the contents
of DIC in subterranean stream outlet (G1 site) ranged from 4.60 to 4.90
mmol·L<sup>-1</sup>with an average of 4.73 mmol·L<sup>-1</sup>in dry
season, and from 2.80 to 4.70 mmol·L<sup>-1</sup>with an average of 4.23
mmol·L<sup>-1</sup>in rainy season. The contents of DIC in 1.35 km downstream site
(G2 site) ranged from 4.30 to 4.90 mmol·L<sup>-1</sup>with an average of 4.56
mmol·L<sup>-1</sup>in dry season, and from 3.00 to 4.70 mmol·L<sup>-
1</sup>with an average of 4.20 mmol·L<sup>-1</sup>in rainy season. The
δ<sup>13</sup>C<inf>DIC</inf>of subterranean stream outlet (G1 site) varied from -
12.8‰ to -11.53‰ with an average of -12.22‰ in dry season, and from
-13.12‰ to -11.01‰ with an average of -12.28‰ in rainy season. The
δ<sup>13</sup>C<inf>DIC</inf>of stream downstream site (G2 site) ranged from -
11.71‰ to -9.55‰ with an average of -10.73‰ in dry season, and
ranged from -12.18‰ to -9.85‰ with an average of -11.10‰ in rainy
season. The contents of DIC of G1 site were higher than those of G2 site. The DIC
contents in dry season in both G1 and G2 site were higher than those in rainy season. The
values of δ<sup>13</sup>C<inf>DIC</inf>of G1 and G2 site in dry season were more
positive than those in rainy season. The δ<sup>13</sup>C<inf>DIC</inf>value of G1
site was more negative than that of G2 site. The main sources of DIC in underground river
and surface stream were soil CO<inf>2</inf>and carbonate dissolution. However, the
differences of DIC and δ<sup>13</sup>C<inf>DIC</inf>between G1 and G2 site showed
that CO<inf>2</inf>degassing and photosynthesis of aquatic plants had significant
influence on water DIC and δ<sup>13</sup>C<inf>DIC</inf>value. This study is
helpful to understand the dynamic change and distribution of DIC and
δ<sup>13</sup>C<inf>DIC</inf>in karst surface stream. © 2017, Science Press.
All right reserved.
Number of references:35
Main heading:Rivers
Controlled terms:Carbon - Carbon dioxide - Dissolution - Drought - Groundwater - Isotopes
- Landforms
Uncontrolled terms:Dissolved inorganic carbon - Guangxi - Influential factors - Karst
surface - Stable carbon isotopes - Stable isotopic compositions - Temporal and spatial
variation - Underground rivers
Classification code:444 Water Resources - 444.2 Groundwater - 481.1 Geology - 802.3
Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Molar_Concentration 2.80e+00mol/m3 to 4.70e+00mol/m3,
Molar_Concentration 3.00e+00mol/m3 to 4.70e+00mol/m3, Molar_Concentration 4.20e+00mol/m3,
Molar_Concentration 4.23e+00mol/m3, Molar_Concentration 4.30e+00mol/m3 to 4.90e+00mol/m3,
Molar_Concentration 4.56e+00mol/m3, Molar_Concentration 4.60e+00mol/m3 to 4.90e+00mol/m3,
Molar_Concentration 4.73e+00mol/m3, Size 1.35e+03m
DOI:10.13227/j.hjkx.201607171
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 16>
Accession number:20171003416434
Title:Influencing mechanism and spatio-temporal pattern of stomatal ozone flux of winter
wheat under ozone pollution
Authors:Zhao, Hui (1, 2); Zheng, You-Fei (1, 2, 3); Cao, Jia-Chen (3); Xu, Jing-Xin (1,
2); Huang, Ji-Qing (1, 2); Yuan, Yue (3)
Author affiliation:(1) Key Laboratory for Aerosol-Cloud-Precipitation of China
Meteorological Administration, Nanjing University of Information Science and Technology,
Nanjing; 210044, China; (2) School of Atmospheric Physics and Environment, Nanjing
University of Information Science & Technology, Nanjing; 210044, China; (3) School of
Environmental Science and Engineering, Nanjing University of Information Science &
Technology, Nanjing; 210044, China
Corresponding author:Zheng, You-Fei(zhengyf@nuist.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:412-422
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:As one of the main atmospheric pollutants over surface layer, researches on the
increasing surface ozone concentration and its impact on main crops have become the focus
of every government and the public. In this paper, based on the observations in Nanjing
using the main local cultivars in China's major winter wheat producing areas, it was
expected to obtain the data including ozone concentration, meteorological data and
stomatal conductance by continuous observation. Stomatal conductance model was used and
parameterized, combined with flux model, we analyzed the characteristics of stomatal flux
in winter wheat under ozone pollution. At the same time, the stomatal conductance and
stomatal ozone absorption flux of winter wheat were simulated in Jiangsu Province. The
main results were as follows: Elevated ozone concentration could reduce stomatal
conductance of winter wheat leaf and stomatal conductance decreased with the increase of
ozone concentration. According to the observational data through the experiment, based on
the boundary line technology, stomatal conductance model was parameterized to simulate
stomatal conductance of wheat leaves from environmental factors. Approximately 90%, 77%
and 83% variation of measured stomatal conductance could be explained by the stomatal
conductance model. In the experiment, the total ozone absorption flux in ozone
concentration of CK(53.67 nL·L<sup>-1</sup>), 100nL·L<sup>-1</sup>,
150nL·L<sup>-1</sup>was 6.42 mmol·m<sup>-2</sup>, 12.27
mmol·m<sup>-2</sup>, 13.90 mmol·m<sup>-2</sup>respectively. The ozone
concentration gradually increased from early period to late period during the period of
winter wheat growth in Jiangsu area. The average stomatal conductance followed the order
of the middle stage>the later stage>the early stage. Winter wheat ozone cumulative
absorption flux was the highest during the middle stage. © 2017, Science Press. All
right reserved.
Number of references:36
Main heading:Air pollution
Controlled terms:Crops - Environmental technology - Meteorology - Ozone - Ozone layer -
Pollution
Uncontrolled terms:Climate - Jiangsu province - Ozone flux - Stomatal - Winter wheat
Classification code:451 Air Pollution - 454 Environmental Engineering - 804 Chemical
Products Generally - 821.4 Agricultural Products
Numerical data indexing:Percentage 7.70e+01%, Percentage 8.30e+01%, Percentage 9.00e+01%
DOI:10.13227/j.hjkx.201607074
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 17>
Accession number:20171003409570
Title:Isolation, identification and metabolic characteristics of a heterotrophic
denitrifying sulfur bacterial strain
Authors:Tan, Wen-Bo (1); Ma, Xiao-Dan (1); Huang, Cong (1); Chen, Chuan (1); Wang, Ai-Jie
(1, 2)
Author affiliation:(1) State Key Laboratory of Urban Water Resource and Environment,
School of Municipal and Environmental Engineering, Harbin Institute of Technology,
Harbin; 150090, China; (2) Key Laboratory of Environmental Biotechnology, Research Center
for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085, China
Corresponding author:Wang, Ai-Jie(ajwang@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:809-814
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Organics, sulfide and nitrogen compounds in industrial wastewater are
significant challenges for wastewater treatment. These pollutants could be removed
simultaneously from wastewater treatment system using biological technologies. In this
study, a heterotrophic denitrifying sulfur bacterial strain HDD1 was isolated from
wastewater treatment bioreactor. Strain HDD1 was identified as Thauera sp. based on the
16S rRNA gene phylogenetic analysis and physiological characteristics. Acetate and
sulfide could be utilized as electron donors and nitrate as electron acceptor for
respiration in Thauera sp. HDD1. The acetate (300 mg·L<sup>-1</sup>), sulfide (200
mg·L<sup>-1</sup>) and nitrate (487 mg·L<sup>-1</sup>) were completely
metabolized and removed within 15 hours. The main product of sulfide oxidation was
elemental sulfur as identified by scanning electron microscope and energy dispersive
spectrometer. These results suggest that the newly isolated Thauera sp. HDD1 could be
used for simultaneous industrial wastewater treatment and elemental sulfur resource
recovery. © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Wastewater treatment
Controlled terms:Biological water treatment - Chemicals removal (water treatment) -
Denitrification - Industrial water treatment - Nitrates - Nitrogen compounds -
Reclamation - RNA - Scanning electron microscopy - Spectrometers - Sulfur - Sulfur
compounds
Uncontrolled terms:Acetate - Elemental sulfur - Energy dispersive spectrometers -
Industrial wastewater treatment - Metabolic characteristics - Physiological
characteristics - Sulfide - Wastewater treatment system
Classification code:445.1 Water Treatment Techniques - 445.1.2 Water Treatment
Techniques for Industrial Use - 452.4 Industrial Wastes Treatment and Disposal - 461.2
Biological Materials and Tissue Engineering - 741.3 Optical Devices and Systems - 802.2
Chemical Reactions - 804 Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 2.00e-01kg/m3, Mass_Density 3.00e-01kg/m3,
Mass_Density 4.87e-01kg/m3, Time 5.40e+04s
DOI:10.13227/j.hjkx.201608034
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 18>
Accession number:20171003416431
Title:Characteristics and evaluation of heavy metal pollution in vegetables in guangzhou
Authors:Chen, Zhi-Liang (1); Huang, Ling (1, 2); Zhou, Cun-Yu (2); Zhong, Song-Xiong (1);
Wang, Xin (1); Dai, Yu (1); Jiang, Xiao-Lu (1)
Author affiliation:(1) South China Institute of Environmental Science, Ministry of
Environmental Protection, Guangzhou; 510655, China; (2) School of Horticulture and
Garden, Yangtze University, Jingzhou; 434025, China
Corresponding author:Zhou, Cun-Yu(zhoucy@yangtzeu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:389-398
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Vegetable is an indispensible component of human daily diet, and contamination
of vegetables by heavy metals directly threatens human health. In this study, 116
vegetable samples were collected from 12 administrative districts of Guangzhou City for
analysis of six heavy metals, Cu, Zn, Pb, Cd, Ni, Cr. A combination of single factor
evaluation and Nemero Index analysis was employed to determine specific heavy metals
exceeding allowable standards and analyze the characteristics of pollution. Risk of
exposure was utilized to assess human health risks originating from eating locally
planted vegetables contaminated by heavy metals. The results showed that contents of Cu,
Zn in the 8 sorts of vegetables were below the standards of maximum allowable content and
the contents of heavy mental Cr of up to 91.67% vegetable samples were higher than their
standard. Lettuce sativa var. angustana Irish, Luffa acutangula L., Lycopersicon
esculentum Mill. and Daucus carota L. were the 4 species of Pb exceeding vegetables, with
the exceed ratio reaching up to 35.71% and Daucus carota L. exceeded the target value
most seriously. Only the content of Cd in Lycopersicon esculentum Mill. was over-
standard,with the rate of 31.25%. And the highest rate of over-standard of the content of
Ni in 3 species of vegetables, which included Lactuca sativa L., Ipomoea aquatica Forsk
and Brassica parachinensis, reached 8.33%. For the contamination level of the eight kinds
of vegetable, Lactuca sativa L., Ipomoea aquatica Forsk, Brassica parachinensis, Raphanus
sativus L. and Daucus carota L. were put into the class of alarming, while Lettuce sativa
var. angustana Irish, Luffa acutangula L. and Lycopersicon esculentum Mill. were
classified as secure. Heavy metals' comprehensive pollution degree of 4 species of
vegetables presented a trend of leafy vegetables>rootstalk vegetables>stem
vegetables>solanaceous fruits. Health risk assessment showed that Guangzhou citizens
eat more frequently Ipomoea aquatica Forsk and Lactuca sativa L. and Brassica
parachinensis were prone to higher accumulation of heavy metals, and the dietary intake
of heavy metal Cr might cause harm to human health and intake of Cd would bring potential
health risk to the human body. Risk of exposure to heavy metal through oral ingestion of
vegetables was proved to be higher for children than adults. © 2017, Science Press.
All right reserved.
Number of references:29
Main heading:Copper
Controlled terms:Cadmium - Chemical contamination - Fruits - Health - Health risks -
Heavy metals - Lead - Metal analysis - Nickel - Pollution - Risk assessment - Value
engineering - Vegetables - Zinc
Uncontrolled terms:Characteristics of pollution - Contamination levels - Guangzhou -
Health evaluation - Heavy metal pollution - Lycopersicon esculentum Mill - Potential
health risks - Single factor evaluation
Classification code:461.6 Medicine and Pharmacology - 461.7 Health Care - 531
Metallurgy and Metallography - 544.1 Copper - 546.1 Lead and Alloys - 546.3 Zinc and
Alloys - 548.1 Nickel - 549.3 Nonferrous Metals and Alloys excluding Alkali and
Alkaline Earth Metals - 821.4 Agricultural Products - 822.3 Food Products - 911.5
Value Engineering - 914.1 Accidents and Accident Prevention
Numerical data indexing:Percentage 3.12e+01%, Percentage 3.57e+01%, Percentage 8.33e+00%,
Percentage 9.17e+01%
DOI:10.13227/j.hjkx.201606138
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 19>
Accession number:20171003416387
Title:Interactive effects of the influencing factors on the changes of
PM<inf>2.5</inf>concentration based on gam model
Authors:He, Xiang (1, 2, 3, 4, 5); Lin, Zhen-Shan (1, 3, 4, 5)
Author affiliation:(1) College of Geography Science, Nanjing Normal University, Nanjing;
210023, China; (2) Institute of Tourism, Kaili University, Kaili; 556011, China; (3)
Jiangsu Center for Collaborative Innovation in Geographical Information Resource
Development and Application, Nanjing; 210023, China; (4) State Key Laboratory Cultivation
Base of Geographical Environment Evolution, Nanjing; Jiangsu Province; 210023, China; (5)
Key Laboratory of Virtual Geographic Environment, Nanjing Normal University, Ministry of
Education, Nanjing; 210023, China
Corresponding author:Lin, Zhen-Shan(linzhenshan@njnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:22-32
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this paper, the generalized additive model (GAM) was introduced to analyze
the interactive effects of the influencing factors on the change of
PM<inf>2.5</inf>concentration during 2013-2015 in Nanjing city. The results showed as
follows: PM<inf>2.5</inf>and its influencing factors appeared to follow normal
distribution. There were strong correlations among the influencing factors, especially
among the temperature(TEM), pressure(PRS) and water vapor pressure(VAP). For the single
influencing factor GAM models of PM<inf>2.5</inf>concentration, all influencing factors
passed the significance test. Moreover, the equation fitting degrees of SO<inf>2</inf>,
CO, and NO<inf>2</inf>were much higher. In the multiple influencing factors GAM models of
PM<inf>2.5</inf>concentration, the contribution of the SO<inf>2</inf>, CO,
NO<inf>2</inf>, O<inf>3</inf>, precipitation (PRE), wind and relative humidity(RHU) to
the change of PM<inf>2.5</inf>concentration was 73.9% with significant impacts on the
change of PM<inf>2.5</inf>concentration. Based on the diagnostic analysis of the effect
of multi factors on the change of PM<inf>2.5</inf>concentration, there were linear
relationship between PM<inf>2.5</inf>and SO<inf>2</inf>, NO<inf>2</inf>and wind, and
non-linear relationship between PM<inf>2.5</inf>and CO, O<inf>3</inf>, PRE and RHU. The
GAM models, which considered the interaction of SO<inf>2</inf>respectively with CO, PRE
and RHU, the interaction of CO respectively with NO<inf>2</inf>, O<inf>3</inf>, PRE, Wind
and RHU, and the interaction of NO<inf>2</inf>respectively with Wind, PRE and RHU, all
passed the significance test(P<0.01 or P<0.05). The interaction of SO<inf>2</inf>,
CO and NO<inf>2</inf>respectively with other factors such as meteorological factors had
the most important influence on the change of PM<inf>2.5</inf>concentration. At last,
through the visualized three-dimensional map of the GAM models considering the
interaction of the influencing factors on the PM<inf>2.5</inf>concentration, the
interactive effects of the influencing factors on PM<inf>2.5</inf>concentration were
quantitatively modeled. Our results demonstrated that GAM could be used to quantitatively
analyze the interactive effect of the influencing factors on the change of
PM<inf>2.5</inf>concentration. Therefore, the research method is innovative and important
for PM<inf>2.5</inf>pollution and control. © 2017, Science Press. All right
reserved.
Number of references:33
Main heading:Nitrogen oxides
Controlled terms:Normal distribution - Pollution control - Sulfur dioxide
Uncontrolled terms:Generalized additive model - Influencing factors - Interaction -
Linear relationships - Meteorological factors - Nanjing cities - Non-linear relationships
- Three-dimensional maps
Classification code:804.2 Inorganic Compounds - 922.1 Probability Theory
Numerical data indexing:Percentage 7.39e+01%
DOI:10.13227/j.hjkx.201606061
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 20>
Accession number:20172603860986
Title:Degradation of the Disperse Dye Neocron Black(NB) by Biological Treatment
Authors:Yang, Bo (1, 2); Ding, Feng-You (1, 2); Xu, Hui (1, 2); Li, Fang (1, 2); Tian,
Qing (1, 2); Ma, Chun-Yan (1, 2)
Author affiliation:(1) State Environmental Protection Engineering Center for Pollution
Treatment and Control in Textile Industry, Shanghai; 201620, China; (2) College of
Environmental Science and Engineering, Donghua University, Shanghai; 201620, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1520-1528
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The biodegradation characteristics of the azo disperse dye neocron black (NB)
were investigated under aerobic, anaerobic and anaerobic/aerobic conditions separately
with the activated sludge system, and the biological degradation process of the dye was
analyzed by spectrophotometry and gas chromatography mass spectrometry (GC-MS). The
results showed that the degradation efficiency of NB dye was the highest under fully
aerobic conditions, followed by the anaerobic/aerobic conditions, and fully anaerobic
condition was the lowest. With the increase of the concentration of NB dye, the dye and
the intermediate metabolite greatly decreased the microbial degradation efficiency of NB
dye. The addition of carbon source could not only promote the biodegradation of NB dye,
but also change the kinetic characteristics of the biodegradation process. The
spectrophotometry and GC-MS determination results showed that the chromophore was
completely degraded after biodegradation of NB dye. The intermediates metabolites of NB
dye included 2,4-Dinitroaniline, 2-cyano-4-nitro aniline, p-Nitroaniline etc. ©
2017, Science Press. All right reserved.
Number of references:29
Main heading:Biodegradation
Controlled terms:Activated sludge process - Aniline - Carbon - Chromophores - Degradation
- Efficiency - Gas chromatography - Mass spectrometry - Metabolites - Spectrophotometry
Uncontrolled terms:Aerobic - Alternating aerobic/anaerobic condition - Anaerobic -
Disperse dyes - Neocron black (NB)
Classification code:452.2 Sewage Treatment - 801 Chemistry - 801.2 Biochemistry -
802.2 Chemical Reactions - 802.3 Chemical Operations - 804 Chemical Products Generally
- 804.1 Organic Compounds - 913.1 Production Engineering - 941 Acoustical and Optical
Measuring Instruments
DOI:10.13227/j.hjkx.201603007
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 21>
Accession number:20172603860978
Title:Identification and PAC Adsorption of Foulants Responsible for Irreversible Fouling
During Ultrafiltration of Dongjiang River Water
Authors:Yang, Hai-Yan (1, 2); Wang, Can (3); Yan, Zhong-Sen (2); Li, Dong-Ping (1); Zhao,
Yan (1); Qu, Fang-Shu (2); Liang, Heng (2); Xu, Ye-Qin (1); Li, Gui-Bai (2)
Author affiliation:(1) Guangdong GDH Water Co., Ltd., Shenzhen; 518021, China; (2) School
of Environmental and Municipal Engineering, Harbin Institute of Technology, Harbin;
150090, China; (3) School of Environmental and Municipal Engineering, Qingdao University
of Technology, Qingdao; 266033, China
Corresponding author:Li, Gui-Bai(liguibai@vip.163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1460-1466
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Foulants responsible for hydraulic irreversible fouling in Dongjiang River water
were identified by ultrafiltration process and their removal by powdered activated carbon
(PAC) adsorption treatment was investigated using fluorescent excitation emission matrix
and parallel factor analysis (EEM-PARAFAC). A correlation analysis was then carried out
for samples between the maximum fluorescence intensities (F<inf>max</inf>) of three
PARAFAC components after PAC adsorption and the surface properties of corresponding PAC
samples. The results showed that two humic-like (C1 and C3) and one tryptophan-like
fluorescent components were obtained through PARAFAC analysis, in which tryptophan-like
component C2 was found to be the main substance in hydraulic irreversible foulants
extracted from fouled membrane. Furthermore, the results of correlation analysis
suggested that microspore area of PAC correlated with PAC adsorption of tryptophan-like
fluorescent components, which played an important role in irreversible fouling. Both BET
and mesopore+macropore area of PAC correlated with its adsorption of humic-like
fluorescent components. The result provided support for selecting PAC in PAC-
ultrafiltration hybrid process, which would be more effective for fouling control. ©
2017, Science Press. All right reserved.
Number of references:25
Main heading:Factor analysis
Controlled terms:Activated carbon - Activated carbon treatment - Adsorption - Amino acids
- Biological materials - Correlation methods - Fluorescence - Fouling - Multivariant
analysis - Ultrafiltration - Water resources
Uncontrolled terms:Correlation analysis - Excitation emission matrices - Fluorescence
intensities - Foulants - Natural organic matters - Parallel factor analysis - Powdered
activated carbon - Ultrafiltration process
Classification code:444 Water Resources - 461.2 Biological Materials and Tissue
Engineering - 741.1 Light/Optics - 802.3 Chemical Operations - 804 Chemical Products
Generally - 804.1 Organic Compounds - 922 Statistical Methods - 922.2 Mathematical
Statistics
DOI:10.13227/j.hjkx.201609013
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 22>
Accession number:20172603860967
Title:Water Quality Analysis of Beijing Segment of South-to-North Water Diversion Middle
Route Project
Authors:Xu, Hua-Shan (1); Zhao, Lei (1); Sun, Hao-Su (1); Ren, Yu-Fen (2); Ding, Tao (1);
Chang, Shuai (1); Wang, Hai-Dong (1); Li, Miao (1); Guo, Zhao (1)
Author affiliation:(1) Daning Management Office of the Beijing South-to-North Water
Diversion, Beijing; 102442, China; (2) State Key Laboratory of Urban and Regional
Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences,
Beijing; 100085, China
Corresponding author:Ren, Yu-Fen(yfren@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1357-1365
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Water quality is the key problem that water management departments concern.
Water quality of Beijing segment of South-to-North Water Diversion Middle Route Project
is closely related to water security and social stability in Beijing. Since the
connection of Beijing part in Middle Route of South-to-North Diversion Project, water
quality data of Daning regulation and storage reservoir and Daning surge tank was
collected, and water quality indexes including water temperature, total nitrogen, nitrate
nitrogen, chloride ion, sulfate, dissolved oxygen, permanganate index, pH, ammonia
nitrogen, fluorine ion and total phosphorus, were monitored monthly. With variance
analysis, water quality difference among different water sources of the South-to-North
Water Diversion of Middle Route was analyzed. With factor analysis method, the water
quality risk factors of Daning regulation and storage reservoir and Daning surge tank
were identified. The results were as following, water from Hebei province had higher
contents of nitrate nitrogen, total nitrogen, fluorine ion, chloride ion and sulfate than
those of water from Danjiangkou reservoir, but the water quality was not as good as that
from Danjiangkou reservoir. LSD difference test results showed that the dissolved oxygen,
nitrate nitrogen and total nitrogen of the water from Hebei province had significant
differences (P<0.05) between flood season and non-flood season, there was significant
difference (P<0.05) in pH of water from Danjiangkou reservoir between flood season and
non-flood season, and the water quality of Danjiangkou reservoir was more stable than
water from Heibei province. No matter in flood season or non-flood season, there were no
significant differences (P<0.05) in pH, dissolved oxygen, permanganate index, total
phosphorus and ammonia nitrogen between the water from Danjiangkou reservoir and Heibei
province, but there were significant differences (P<0.05) in nitrate nitrogen, total
nitrogen, fluorine ion and sulfate ion and chloride ion. Contents of Nitrate nitrogen,
total nitrogen, sulfate and chloride ion in 2015 (the mixture of water from Hebei
province and Danjiangkou reservoir) in Daning regulation and storage reservoir were lower
than those in 2012-2014 (water from Hebei province), and the water from Danjiangkou
reservoir played a key role in dilution and adjustment of the water from Hebei province
in Daning regulation and storage reservoir. The water quality differences test results
between 2012-2014 and 2015 showed that there were significant differences (P<0.05) in
the nitrate nitrogen, total nitrogen, fluorine ion, sulfate and chloride ion both in
flood season and non-flood season, and the water quality of 2015 was better than that of
2012~2014 in non-flood season, but the differences of pH, dissolved oxygen, permanganate
index, total phosphorus, ammonia nitrogen were not obvious (P<0.05). The difference
test results between Daning regulation and storage reservoir and Daning surge tank showed
that Permanganate index, total nitrogen, fluorine ion, sulfate and chloride ion had
significant differences (P<0.05) both in flood season and non-flood season, and the
contents of permanganate index, fluorine ion, sulfate and chloride ions in Daning
regulation and storage reservoir were higher than those in Daning surge tank. The factor
analysis results indicated that water quality potential risk factors both in Daning
regulation and storage reservoir and Daning surge tank were mainly nitrogen, including
ammonia nitrogen, nitrate nitrogen and total nitrogen, and potential risk factors also
included total phosphorus in Daning regulation and storage reservoir. © 2017,
Science Press. All right reserved.
Number of references:25
Main heading:Reservoirs (water)
Controlled terms:Ammonia - Biochemical oxygen demand - Chlorine compounds - Digital
storage - Dissolution - Dissolved oxygen - Factor analysis - Flood control - Floods -
Fluorine - Ions - Multivariant analysis - Nitrates - Nitrogen - Oxygen - Phosphorus -
Quality control - Risk assessment - Sulfur compounds - Surge tanks - Tanks (containers)
- Water management - Water quality
Uncontrolled terms:Danjiangkou reservoir - Factor analysis method - South to North water
diversion - Storage reservoirs - Water quality analysis - Water quality data - Water
quality indexes - Water temperatures
Classification code:441.2 Reservoirs - 445.2 Water Analysis - 619.2 Tanks - 722.1
Data Storage, Equipment and Techniques - 802.3 Chemical Operations - 804 Chemical
Products Generally - 804.2 Inorganic Compounds - 913.3 Quality Assurance and Control -
914.1 Accidents and Accident Prevention - 922 Statistical Methods - 922.2 Mathematical
Statistics
DOI:10.13227/j.hjkx.201607068
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 23>
Accession number:20172603860959
Title:Dry and Bulk Nitrogen Deposition in Suburbs of Xining City
Authors:Xu, Wen (1, 2); Jin, Xin (3); Luo, Shao-Hui (3); Feng, Zhao-Zhong (2); Zhang, Lin
(4); Pan, Yue-Peng (5); Liu, Xue-Jun (1)
Author affiliation:(1) College of Resources and Environmental Sciences, China
Agricultural University, Beijing; 100193, China; (2) State Key Laboratory of Urban and
Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of
Sciences, Beijing; 100085, China; (3) Bureau of Qinghai Meteorology, Xining; 810001,
China; (4) Department of Atmospheric and Oceanic Sciences, School of Physics, Peking
University, Beijing; 100871, China; (5) State Key Laboratory of Atmospheric Boundary
Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese
Academy of Sciences, Beijing; 100029, China
Corresponding author:Liu, Xue-Jun(liu310@cau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1279-1288
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study conducted a full two-year (2014 and 2015) measurements of dry and
bulk deposition of atmospheric inorganic nitrogen (N) at the suburb of Xining city,
Qinghai province. Dry N deposition fluxes were calculated by multiplying the atmospheric
concentrations of NH<inf>3</inf>and NO<inf>2</inf>measured using passive samplers with
the modeled dry deposition velocities provided by the GEOS-Chem global chemical transport
model, while bulk N deposition fluxes were measured using precipitation gauge. Annual
mean concentrations of gaseous NH<inf>3</inf>and NO<inf>2</inf>averaged 8.8 and 19.6
μg·m<sup>-3</sup>, respectively, with significantly higher values in 2015 than
in 2014. Seasonal mean NH<inf>3</inf>concentrations were higher in spring and summer than
in autumn and winter, but the concentrations of NO<inf>2</inf>changed little from season
to season, with a small peak in autumn. Annual mean concentrations of
NH<inf>4</inf><sup>+</sup>-N and NO<inf>3</inf><sup>-</sup>-N in precipitation averaged
2.2 and 1.8 mg·L<sup>-1</sup>, respectively. Concentrations of
NH<inf>4</inf><sup>+</sup>-N in autumn were~55% lower than those in other seasons,
whereas those of NO<inf>3</inf><sup>-</sup>-N in autumn or winter were~26% higher than
those in spring and summer. Dry deposition of NH<inf>3</inf>and NO<inf>2</inf>was 9.0 and
2.8 kg·(hm<sup>2</sup>·a)<sup>-1</sup>, respectively. Bulk deposition of
NH<inf>4</inf><sup>+</sup>-N and NO<inf>3</inf><sup>-</sup>-N in precipitation was 7.6
and 6.2 kg·(hm<sup>2</sup>·a)<sup>-1</sup>, respectively. Reduced N
(gaseous NH<inf>3</inf>and NH<inf>4</inf><sup>+</sup>-N in precipitation) was the
dominant form of N deposition. The total dry and wet N deposition was 25.6 kg·
(hm<sup>2</sup>·a)<sup>-1</sup>, which represented significant nutrient input from
the environment to the suburban farmland, but this amount of deposited N exceeded the
critical loads [10-20 kg·(hm<sup>2</sup>·a)<sup>-1</sup>] of terrestrial
ecosystems, suggesting a risk of “N saturation” in the local natural
environment. © 2017, Science Press. All right reserved.
Number of references:41
Main heading:Nitrogen oxides
Controlled terms:Atmospheric chemistry - Atmospheric movements - Meteorological
instruments - Nitrogen - Nitrogen compounds
Uncontrolled terms:Atmospheric concentration - Chemical transport models - Dry deposition
- Dry deposition velocities - Suburban areas - Terrestrial ecosystems - Tibetan Plateau -
Wet deposition
Classification code:443.1 Atmospheric Properties - 443.2 Meteorological Instrumentation
- 804 Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 1.80e-03kg/m3, Mass_Density 2.20e-03kg/m3
DOI:10.13227/j.hjkx.201609237
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 24>
Accession number:20172603860988
Title:Short-cut Nitrification Recovery and Its Transformation into CANON Process in a
Biofilm Reactor
Authors:Fu, Kun-Ming (1); Zhou, Hou-Tian (1); Su, Xue-Ying (1); Wang, Hui-Fang (1)
Author affiliation:(1) Key Laboratory of Urban Storm Water System and Water Environment,
School of Environment and Energy Engineering, Beijing University of Civil Engineering and
Architecture, Beijing; 100044, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1536-1543
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A short-cut nitrification process with modified polyethylene as carrier was
operated to investigate the biofilm short-cut nitrification recovery using synthetic
inorganic ammonia-rich wastewater as influent at 30℃ ±1℃. The short-
cut nitrification was destroyed first by excessive aeration, and it was not built in 83
days under the condition of continuous aeration with DO less than 0.5 mg·L<sup>-
1</sup>and free ammonia (FA) more than 1.5 mg·L<sup>-1</sup>, which are very
beneficial to short-cut nitrification. However, short-cut nitrification was realized by
changing continuous aeration to intermittent aeration on 84<sup>th</sup>day, and it was
proved again on 142nd day. After that, biofilm system provided a living environment for
ANAMMOX bacteria, anaerobic ammonia oxidation occurred, and the biofilm short-cut
nitrification process was gradually transformed into CANON process. As the load of
influent and aeration increased, the total nitrogen removal efficiency and removal load
increased, and the total nitrogen removal load could reach up to 2.52 kg·
(m<sup>3</sup>·d)<sup>-1</sup>. Finally, in the 3rd stage,
ΔNO<inf>3</inf><sup>-</sup>-N/ΔTN was 0.10 on average, which means stabe
short-cut nitrification in the CANON process. Therefore, once NOB was adapted to FA, it
would be not very easy to recover short-cut nitrification, while intermittent aeration
was an effective way, and the nitriation process would be finally transformed into CANON
process, which would further improve the short-cut nitrification stability. © 2017,
Science Press. All right reserved.
Number of references:31
Main heading:Nitrification
Controlled terms:Ammonia - Biofilms - Nitration - Nitrogen - Nitrogen removal - Recovery
- Wastewater treatment
Uncontrolled terms:Anaerobic ammonium oxidation - Excessive aeration - Free ammonia -
Intermittent aeration - Living environment - Nitrification process - Nitrite accumulation
- Total nitrogen removal
Classification code:452.4 Industrial Wastes Treatment and Disposal - 462.5 Biomaterials
(including synthetics) - 802.2 Chemical Reactions - 804 Chemical Products Generally -
804.2 Inorganic Compounds
Numerical data indexing:Age 2.27e-01yr, Mass_Density 1.50e-03kg/m3, Mass_Density 5.00e-
04kg/m3
DOI:10.13227/j.hjkx.201609233
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 25>
Accession number:20172603860979
Title:Efficiency and Kinetics of Triclosan Degradation in Aqueous Solution by UV/Sodium
Persulfate
Authors:Li, Qing-Song (1); Li, Xue-Yan (2); Yao, Ning-Bo (1, 2); Luo, Jing-Yu (1, 2); Li,
Guo-Xin (1); Chen, Guo-Yuan (1); Gao, Nai-Yun (3)
Author affiliation:(1) Water Resources and Environmental Institute, Xiamen University of
Technology, Xiamen; 361024, China; (2) School of Environmental Science and Engineering,
Suzhou University of Science and Technology, Suzhou; 215009, China; (3) National Key
Laboratory of Pollution Control and Reuse, Tongji University, Shanghai; 200092, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1467-1476
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:UV activated sodium persulfate was employed to remove triclosan (TCS) in aqueous
solution. The effects of several factors such as UV wavelength,
UV<inf>254</inf>intensity, sodium persulfate dosage, pH value, and HA on TCS degradation
were investigated. The second-order rate constants of free radicals (·OH,
SO<inf>4</inf><sup>·-</sup>) reacting with TCS and their contributions to TCS
removal were determined, respectively. The dominant free radical was also identified.
Furthermore, the TCS degradation efficiency in natural water by UV<inf>254</inf>/SPS and
UV<inf>254</inf>/H<inf>2</inf>O<inf>2</inf>was compared. Finally, the possible pathway
and intermediate products of TCS degradation were analyzed with GC/MS. The results
indicated that UV<inf>254</inf>activated sodium persulfate could effectively remove TCS.
The removal rate of TCS could reach 98.15% within 100s under the conditions of UV
wavelength of 254 nm,UV intensity of 11.5μW·cm<sup>-2</sup>,sodium persulfate
dosage of 1mmol·L<sup>-1</sup>,and TCS initial concentration of 275
μg·L<sup>-1</sup>. TCS degradation followed the pseudo-first-order kinetic
model and the pseudo-first-order rate constant was determined to be 0.039 2 s<sup>-
1</sup>. Pseudo-first-order rate constant for TCS degradation increased with the increase
of UV<inf>254</inf>intensity(I)and sodium persulfate dosage within experiment ranges. The
effect of UV wavelength on TCS removal was not notable. Neutral condition was detrimental
to TCS degradation. TCS removal was inhibited in the presence of HA. The reaction rate
constants for ·OH and SO<inf>4</inf><sup>·-</sup>reacting with TCS were
7.62×10<sup>9</sup>L·mol<sup>-1</sup>·s<sup>-1</sup>and
9.86×10<sup>9</sup>L·mol<sup>-1</sup>·s<sup>-1</sup>,respectively.
SO<inf>4</inf><sup>·-</sup>was the dominant free radical and its contribution rate
to TCS removal was 97.63% in UV<inf>254</inf>/SPS system. The K value of
UV<inf>254</inf>/SPS was 4.13 times higher than that of
UV<inf>254</inf>/H<inf>2</inf>O<inf>2</inf>process,which demonstrated that
UV<inf>254</inf>/SPS process could remove TCS more effectively than
UV<inf>254</inf>/H<inf>2</inf>O<inf>2</inf>. The main intermediate products found were
2,4-DCP and phenol in the degradation process of TCS in Milli-Q water by
UV<inf>254</inf>/SPS. © 2017, Science Press. All right reserved.
Number of references:36
Main heading:Rate constants
Controlled terms:Biodegradation - Chemical analysis - Chromatographic analysis -
Degradation - Efficiency - Enzyme kinetics - Free radicals - Kinetics - Sodium -
Solutions
Uncontrolled terms:Degradation efficiency - Initial concentration - Intermediates -
Pseudo first order rate constants - Pseudo-first order kinetic model - Second-order rate
constants - Sodium persulfate - Triclosan
Classification code:461.8 Biotechnology - 549.1 Alkali Metals - 802.2 Chemical
Reactions - 913.1 Production Engineering - 931 Classical Physics; Quantum Theory;
Relativity
Numerical data indexing:Mass_Density 2.75e-04kg/m3, Molar_Concentration 1.00e+00mol/m3,
Percentage 9.76e+01%, Percentage 9.82e+01%, Size 2.54e-07m, Surface_Power_Density 1.15e-
01W/m2, Time 1.00e+02s
DOI:10.13227/j.hjkx.201609211
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 26>
Accession number:20172603860984
Title:Removal of Estrogenic Effect by Typical Domestic Wastewater Treatment Processes
Authors:Zhang, Qiu-Ya (1); Ma, Xiao-Yan (1); Wang, Xiao-Chang (1); You, Meng (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Corresponding author:Wang, Xiao-Chang(xcwang@xauat.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1506-1512
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Targeting at the characteristics of low concentration but high risk of endocrine
disrupting compounds in the aquatic environment, the current study investigated the
distribution of estrogenicity and E2 level using recombinant yeast estrogen screen (YES)
and enzyme linked immunosorbent assay (ELSIA) during domestic wastewater treatment
processes. The results showed that the levels of estrogenicity and E2 in influents of
wastewater treatment plants were 4.35-7.58 ng·L<sup>-1</sup>and 36.95-83.43
ng·L<sup>-1</sup>, respectively. It was found that biological treatment processes
played a crucial role in the removal of estrogenicity and E2, such as oxidation ditch,
A<sup>2</sup>/O and A<sup>2</sup>/O followed by MBR, where the removal of estrogenicity
and E2 was 71.10%-75.54% and 75.88%-80.72%, respectively. The activated sludge, with an
estrogencity level of 1.84-2.43 ng·g<sup>-1</sup>and an E2 level of 8.45-12.84
ng·g<sup>-1</sup>, had the function of eliminating estrogenic effect to a certain
extent by adsorption. The estrogenic activity in the effluent of domestic wastewater was
1.06-2.19 ng·L<sup>-1</sup>, which will pose potential risk to the aquatic life in
the environment. Last but not least, ELISA had a good correlation with YES assay, which
provides a new method for rapid screening and assessment of water environmental estrogen.
© 2017, Science Press. All right reserved.
Number of references:28
Main heading:Wastewater treatment
Controlled terms:Activated sludge process - Effluents - Endocrinology - Enzymes -
Reclamation - Removal - Sewage lagoons - Sewage treatment plants - Wastewater - Yeast
Uncontrolled terms:Biological treatment process - Domestic waste water treatment -
Endocrine disrupting compound - Environmental estrogens - Enzyme linked immunosorbent
assay - Estrogenicity - Wastewater treatment plants - Yeast estrogen screen
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal -
461.6 Medicine and Pharmacology - 822.3 Food Products
Numerical data indexing:Mass_Density 1.06e-09kg/m3 to 2.19e-09kg/m3, Mass_Density 3.70e-
08kg/m3 to 8.34e-08kg/m3, Mass_Density 4.35e-09kg/m3 to 7.58e-09kg/m3, Percentage 7.11e
+01% to 7.55e+01%, Percentage 7.59e+01% to 8.07e+01%
DOI:10.13227/j.hjkx.201607232
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 27>
Accession number:20172603861004
Title:Alleviation Effects of Exogenous Melatonin on Ni Toxicity in Rice Seedings
Authors:Liu, Shi-Xiang (1, 2); Huang, Yi-Zong (1); Luo, Ze-Jiao (2); Huang, Yong-Chun
(1); Jiang, Hang (1)
Author affiliation:(1) Agro-Environmental Protection Institute, Ministry of Agriculture,
Tianjin; 300191, China; (2) School of Environmental Studies, China University of
Geosciences, Wuhan; 430074, China
Corresponding author:Huang, Yi-Zong(yizonghuang@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1675-1682
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The alleviation effect of exogenous melatonin (MT) on Ni toxicity in rice
seedings was investigated. The results showed that low concentration of Ni stress (10, 50
μmol·L<sup>-1</sup>) had little effect on the growth of root of rice seedings,
while higher concentration of Ni stress (100-1 000 μmol·L<sup>-1</sup>)
significantly inhibited the growth of rice root. Compared with the control treatment, the
addition of 100 and 1 000 μmol·L<sup>-1</sup>Ni would decrease the total length
and surface area of root by 63.3%-98.0% and 56.9%-96.3%, respectively. The results showed
that addition of exogenous melatonin had a positive effect on the growth of rice seedings
under Ni stress. This kind of positive effect was even more obvious in the root of rice
seedings. The total length of rice root decreased by 58.4%-83.8% at Ni concentration of
100 μmol·L<sup>-1</sup>, whereas it decreased by only 8.7%-29.1% when 100
μmol·L<sup>-1</sup>Ni and 10 μmol·L<sup>-1</sup>MT were added,
compared with the control treatment. The addition of exogenous melatonin had significant
alleviation effects on oxidative stress in rice seedings caused by Ni. Compared with the
100 μmol·L<sup>-1</sup>Ni treatment, addition of 10 μmol·L<sup>-
1</sup>exogenous MT could significantly decrease the production rate of
O<inf>2</inf><sup>-·</sup>by 43.2%-50.2% and the relative electrolytic leakage by
25.7%-31.6%, whereas increase the activities of CAT by 21.9%-33.7% and the soluble
protein content by 82.6%-84.6%. The results suggested that application of exogenous
melatonin could effectively alleviate the toxic effects of Ni on rice seedings. ©
2017, Science Press. All right reserved.
Number of references:24
Main heading:Nickel
Controlled terms:Hormones - Toxicity
Uncontrolled terms:Alleviation effect - Antioxidant systems - Control treatments - Low
concentrations - Melatonin(MT) - Production rates - Rice - Soluble proteins
Classification code:461.2 Biological Materials and Tissue Engineering - 461.7 Health
Care - 548.1 Nickel
Numerical data indexing:Molar_Concentration 1.00e-01mol/m3 to 1.00e+00mol/m3,
Molar_Concentration 1.00e-01mol/m3, Molar_Concentration 1.00e-02mol/m3,
Molar_Concentration 5.00e-02mol/m3, Percentage 2.19e+01% to 3.37e+01%, Percentage 2.57e
+01% to 3.16e+01%, Percentage 4.32e+01% to 5.02e+01%, Percentage 5.69e+01% to 9.63e+01%,
Percentage 5.84e+01% to 8.38e+01%, Percentage 6.33e+01% to 9.80e+01%, Percentage 8.26e
+01% to 8.46e+01%, Percentage 8.70e+00% to 2.91e+01%
DOI:10.13227/j.hjkx.201609139
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 28>
Accession number:20171003416415
Title:Mechanism for effects of high free ammonia loadings on biological nitrification
Authors:Ji, Min (1); Liu, Ling-Jie (1); Zhai, Hong-Yan (1); Liu, Jing (1); Su, Xiao (1)
Author affiliation:(1) School of Environmental Science and Engineering, Tianjin
University, Tianjin; 300350, China
Corresponding author:Zhai, Hong-Yan(zhaihy@tju.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:260-268
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Wastewater treatment plants treating industrial wastewater and municipal
wastewater may suffer from unexpected shock loads of high ammonia concentrations, which
can lead to inhibition of biological nitrification and failure to meet the wastewater
discharge standards. In order to solve the problem of failure to meet the standards, the
effects of high loadings of free ammonia (FA) on the nitrification process were
investigated in this work using a sequencing batch reactor (SBR). For such purpose,
maximum specific degradation rates of ammonia, maximum specific formation rates of
nitrate, specific oxygen uptake rates and abundances of nitrifying bacteria were
monitored. The results showed that FA promoted nitrification activities at low
concentrations and inhibited the activities when the FA concentration exceeded a certain
value. In addition, high loading concentrations of FA resulted in long recovery times.
When the FA concentration increased from 3.6 mg·L<sup>-1</sup>to 8.1
mg·L<sup>-1</sup>, the abundances of ammonia-oxidizing bacteria (AOB) and
nitrite-oxidizing bacteria (NOB) increased slightly, as shown by the fluorescence in situ
hybridization tests. However, there were apparent decreases in the abundances of AOB and
NOB when the concentration of FA was higher than 8.1 mg·L<sup>-1</sup>. The
critical FA inhibitory concentrations for AOB and NOB were 8.1 mg·L<sup>-
1</sup>and 6.6 mg·L<sup>-1</sup>. It was found that the NOB flora were more
sensitive than AOB to FA inhibition. © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Bacteria
Controlled terms:Ammonia - Batch reactors - Biodegradation - Biological water treatment -
Degradation - Enzyme inhibition - Fluorescence microscopy - Industrial plants -
Industrial water treatment - Lead removal (water treatment) - Nitrification - Wastewater
treatment
Uncontrolled terms:Ammonia nitrogen wastewaters - Ammonia oxidizing bacteria -
Fluorescence in situ hybridization - Free ammonia - Nitrifying bacteria - Nitrite-
oxidizing bacteria - Specific oxygen uptake rate - Wastewater treatment plants
Classification code:445.1 Water Treatment Techniques - 445.1.2 Water Treatment
Techniques for Industrial Use - 452.4 Industrial Wastes Treatment and Disposal - 461.8
Biotechnology - 802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions - 804.2
Inorganic Compounds - 931.4 Quantum Theory; Quantum Mechanics
Numerical data indexing:Mass_Density 3.60e-03kg/m3 to 8.10e-03kg/m3, Mass_Density 6.60e-
03kg/m3, Mass_Density 8.10e-03kg/m3
DOI:10.13227/j.hjkx.201607116
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 29>
Accession number:20171003409560
Title:Remediation of decabromodiphenyl ether contaminated sediment through plant roots
enhanced by exogenous microbes
Authors:Yang, Lei-Feng (1); Yin, Hua (1); Peng, Hui (2); Li, Yue-Peng (3)
Author affiliation:(1) Key Laboratory of Pollution Control and Ecosystem Restoration in
Industry Clusters, College of Environment and Energy, South China University of
Technology, Guangzhou; 510006, China; (2) Department of Chemistry, Jinan University,
Guangzhou; 510632, China; (3) Guangzhou Hailin Electronic Technology Co., Ltd.,
Guangzhou; 510407, China
Corresponding author:Yin, Hua(huayin@scut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:721-727
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Decabromodiphenyl ether (BDE-209), a main ingredient of brominated flame
retardants, has drawn more and more attention because of the pollution it caused in
sediment. A pot experiment was conducted in a greenhouse to investigate the impact of
Brevibacillus brevis and Enterococcus casselifavus on the enhancement of phytoremediation
by Thalia dealbata, which is common in the river bank and was found to be an effective
plant for BDE-209 removal. The concentration of organic acids, the amount of
microorganisms and the ability of carbon utilization of soil microorganisms in different
experimental groups were analyzed. The results showed that the removal rate of BDE-209 in
the exogenous microbes containing groups were higher than that of the control. And B.
brevis presented the highest enhancement of phytoremediation with the removal rate rising
highest to 66% compared with the control (non-rhizosphere group 37.93% and no plant group
39.27%) after 60 days. The removal of BDE-209 in sediment, quantity of microorganism,
concentration of organic acids and the ability of carbon utilization of soil
microorganisms in rhizosphere sediment were higher than those in non-rhizosphere
sediment. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Microorganisms
Controlled terms:Bacteria - Bioremediation - Ethers - Flame retardants - Organic acids -
Pollution - River pollution - Sediments - Soil pollution control - Soils
Uncontrolled terms:Brevibacillus brevis - Brominated flame retardants - Contaminated
sediment - Decabromodiphenyl ethers - Decabromodiphenyl ethers (BDE209) - Experimental
groups - Plant - Soil micro-organisms
Classification code:453 Water Pollution - 454.2 Environmental Impact and Protection -
461.9 Biology - 483 Soil Mechanics and Foundations - 483.1 Soils and Soil Mechanics -
803 Chemical Agents and Basic Industrial Chemicals - 804.1 Organic Compounds
Numerical data indexing:Age 1.64e-01yr, Percentage 3.79e+01%, Percentage 3.93e+01%,
Percentage 6.60e+01%
DOI:10.13227/j.hjkx.201606180
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 30>
Accession number:20171003409526
Title:Correlation of speciated mercury with carbonaceous components in atmospheric
PM<inf>2.5</inf>in Shengsi Region
Authors:Cheng, Na (1); Qian, Guan-Lei (2); Duan, Lian (1); Zhao, Meng-Fei (1); Xiu,
Guang-Li (1)
Author affiliation:(1) State Environmental Protection Key Laboratory of Environmental
Risk Assessment and Control on Chemical Processes, School of Resources &
Environmental Engineering, East China University of Science and Technology, Shanghai;
200237, China; (2) Environmental Monitoring Station of Shengsi, Zhoushan; 202450, China
Corresponding author:Xiu, Guang-Li(xiugl@ecust.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:438-444
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:PM<inf>2.5</inf>samples of four seasons were collected from Nov. 2014 to Aug.
2015 at the site of Shengsi island in Zhoushan islands. Mercury (Hg) and speciated
mercury concentrations in PM<inf>2.5</inf>samples were measured by Atomic Fluorescence
Spectrometry (AFS-9130, China) after digestion with CEM Mars Xpress (PyNN Corporation,
USA). The concentrations of organic carbon (OC) and elemental carbon (EC) in
PM<inf>2.5</inf>samples were determined by thermal/optical carbon analyzer (DRI, USA).
The results showed that the daily concentrations of PM<inf>2.5</inf>-bounded mercury
(PBM) ranged from 0.02 to 1.25 ng·m<sup>-3</sup>. Moreover, the mass content of
PBM was (12.46±18.79) μg·g<sup>-1</sup>, which was higher than those in
continental cities. ANOVA analysis result suggested that the highest average mass
concentrations of PBM occurred in fall, sequentially followed by spring, winter and
summer. Higher concentrations of PBM were in fall and spring, which might be related to
biomass burning. In addition, RPM took the highest fraction of 53.1% in PBM, followed by
HPM (27.3%) and EPM (19.7%), which might be resulted from the complicated composition of
marine aerosols. The strong correlations among OC, EC and PBM indicated that carbonaceous
composition may affect the transport of Hg in the atmosphere. The ratio of OC/EC
represents atmospheric photo-oxidation capacity, so the positive correlation between
OC/EC ratio and HPM indicated that HPM was resulted from atmospheric gas-particle
transformation. The negative correlation between Char-EC/soot-EC and mercury species
indicated that the atmospheric particle-bounded mercury might come mainly from the input
of external mercury sources. © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Mercury (metal)
Controlled terms:Fluorescence spectroscopy - Organic carbon
Uncontrolled terms:Atmospheric particles - Atomic fluorescence spectrometry -
Carbonaceous components - Island - Mass concentration - Mercury species - Negative
correlation - Positive correlations
Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline
Earth Metals - 741.3 Optical Devices and Systems - 804.1 Organic Compounds
Numerical data indexing:Percentage 1.97e+01%, Percentage 2.73e+01%, Percentage 5.31e+01%
DOI:10.13227/j.hjkx.201607203
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 31>
Accession number:20171003409533
Title:Characteristics of mercury emissions from coal-fired power plants in Chongqing
Authors:Zhang, Cheng (1, 2); Zhang, Ya-Hui (1); Wang, Yong-Min (1); Wang, Ding-Yong (1,
2); Xu, Feng (3); Yang, Xi (3); He, Xiu-Qing (3)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400715, China; (3) Chongqing Solid Wastes Management Center,
Chongqing; 401117, China
Corresponding author:Wang, Ding-Yong(dywang@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:495-501
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Four typical coal-fired power plants in Chongqing, representing two different
boiler types (circulating fluidized bed boiler and pulverized coal boiler), were chosen
to investigate mercury emission characteristics through a mercury mass balance method by
analyzing mercury contents in all input and output raw materials in order to accurately
estimate mercury emissions. The results showed coal with mercury concentrations ranging
(80.77±6.39)-(266.83±4.71) μg·kg<sup>-1</sup>could be a
significant contributor of input mercury in these four studied power plants. Most mercury
output from these power plants entered into solid waste with high proportion of mercury
entering the fly ash in CFB plants and entering the fly ash and desulfurization gypsum in
PC plants. Mercury removal efficiencies of studied plants were in the range of 72.89%-
96.05%, and these efficiencies in CFB plants were higher than those in PC plants. The
mercury emission factors for EF<inf>electricity</inf>and EF<inf>coal</inf>of these four
plants were 4.66-29.47 μg·(kW·h)<sup>-1</sup>and 8.55-71.77
mg·t<sup>-1</sup>, respectively. The mercury emission was also calculated to be
6.13-429.17 g·d<sup>-1</sup>. Mercury emissions from coal-fired power plants were
associated with the content of mercury in coal, boiler type, generation load, pollution
control equipment, and so on. To control the mercury emissions, more attention should be
paid to improving the generation load, increasing the mercury removal efficiency of flue
gas cleaning equipment, and strengthening the supervision of solid waste re-utilization.
© 2017, Science Press. All right reserved.
Number of references:26
Main heading:Fossil fuel power plants
Controlled terms:Boilers - Cleaning - Coal - Coal ash - Coal fueled furnaces - Control
equipment - Efficiency - Fire tube boilers - Fluidized bed process - Fluidized beds -
Fly ash - Gas emissions - Gypsum plants - Mercury (metal) - Mining - Pollution control -
Pollution control equipment - Pulverized fuel - Pulverized fuel fired boilers - Removal
- Solid wastes - Surface morphology - Temperature measurement
Uncontrolled terms:Circulating fluidized bed boiler - Coal-fired power plant - Emission
factors - Mercury emissions - Pulverized coal boilers
Classification code:502.1 Mine and Quarry Operations - 524 Solid Fuels - 549.3
Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 614 Steam
Power Plants - 614.2 Steam Power Plant Equipment and Operation - 732.1 Control
Equipment - 802.3 Chemical Operations - 913.1 Production Engineering - 944.6
Temperature Measurements
Numerical data indexing:Percentage 7.29e+01% to 9.60e+01%
DOI:10.13227/j.hjkx.201608055
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 32>
Accession number:20171003409540
Title:Effect of coupling process of wetting-drying cycles and seasonal temperature
increasing on sediment nitrogen minerization in the water level fluctuating zone
Authors:Lin, Jun-Jie (1, 4); Liu, Dan (2); Zhang, Shuai (1); Yu, Zhi-Guo (3); He, Li-Ping
(1); Yu, Shun-Hui (1)
Author affiliation:(1) Key Laboratory of Water Environment Evolution and Pollution
Control in Three Gorges Reservoir, Chongqing Three Georges University, Chongqing; 404100,
China; (2) Department of Agricultural and Forestry Science and Technology, Chongqing
Three Gorges Vocation College, Chongqing; 404100, China; (3) College of Hydrometeorology,
Nanjing University of Information Science and Technology, Nanjing; 210044, China; (4) Key
Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent
Technology, Chinese Academy of Sciences, Chongqing; 400714, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:555-562
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To reveal the effect of coupling process of wetting-drying and seasonal
temperature on sediment nitrogen (N) minerization, surface sediment samples were
collected from the water level fluctuating zone(WLFZ) of Pengxi River crossing two
hydrological sections. The sediment samples were incubated under drying and submerging
conditions at the controlled temperature. The result showed that NO<inf>3</inf><sup>-
</sup>-N and sand% in the sediment of higher altitude of water level (170 m) were higher
than those in low altitudes (150 and 160 m), whereas contents of TN, NH<inf>4</inf><sup>
+</sup>-N and clay% and silt% in low altitudes were much higher. Generally, Net N
mineralization rate and cumulation were lower in higher altitude of water level during
the drying period and submerging period. The ammonification rate decreased rapidly at the
initial stage of incubation (0-7 d), and then had no obvious change, and no significant
differences among altitudes was observed. The nitrification rate at low altitude
decreased with incubation time, while it had only a little change at higher altitude; The
nitrification contributed a higher fraction of net N mineralization than ammonification.
Net N mineralization rate and its cumulation were significantly higher in the drying
period than in the submerging period, while net N mineralization rate decreased with
incubation time at all altitudes. Net N mineralization cumulation tended to rise first
and then declined at all altitudes of the drying period, whereas it was continuously
decreasing at the low water level altitude during the submerging period. Net N nitrogen
mineralization rate of the drying period was positively correlate to both the sediment
organic matter content and its C∶N ratio, while it showed a negative correlation in
the submerging period(P<0.001). Net N mineralization was sensitive to temperature
increase (Q<inf>10</inf>>1) in the drying period, while it was insensitive during the
submerging period of low altitude (Q<inf>10</inf><1). Thus, the impact of temperature
on Net N mineralization was relatively low in submerging period of winter and N was
accumulated with low releasing rate. In contrast to winter, summer exhibited warmer and
drying period, this two factors would lead to higher N mineralization rate and further
induce the potential risk of eutrophication as N releasing into water body. © 2017,
Science Press. All right reserved.
Number of references:32
Main heading:Drying
Controlled terms:Eutrophication - Mineralogy - Nitrification - Nitrogen - River pollution
- Sediments - Temperature - Water levels - Wetting
Uncontrolled terms:Controlled temperature - Impact of temperatures - N mineralization
rate - Nitrogen mineralization - Sediment organic matters - The drying period - The
submerging period - Three Gorges
Classification code:453 Water Pollution - 482 Mineralogy - 483 Soil Mechanics and
Foundations - 641.1 Thermodynamics - 802.2 Chemical Reactions - 804 Chemical Products
Generally
Numerical data indexing:Size 1.50e+02m, Size 1.60e+02m, Size 1.70e+02m
DOI:10.13227/j.hjkx.201607236
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 33>
Accession number:20171003416385
Title:Source apportionment of volatile organic compounds and health assessment of benzene
series in northern suburb of nanjing in winter
Authors:Zhang, Yu-Xin (1); An, Jun-Lin (1); Lin, Xu (2); Wang, Jun-Xiu (1); Shi, Yuan-Zhe
(1); Liu, Jing-Da (1)
Author affiliation:(1) Joint International Research Laboratory of Climate and Environment
Change, Collaborative Innovation Center on Forecast and Evaluation of Meteorological
Disasters, Nanjing University of Information Science and Technology, Nanjing; 210044,
China; (2) Hangzhou Environmental Monitoring Center, Hangzhou; 310007, China
Corresponding author:An, Jun-Lin(junlinan@nuist.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:1-12
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Volatile organic compounds (VOCs) in the atmosphere of the north suburb of
Nanjing in December 2015 were determined by GC5000 online gas chromatography, and the
main composition and characteristics of VOCs were analyzed by using the PMF receptor
model sources of VOCs parsing. The United States Environmental Protection Agency (EPA)
human exposure analysis and evaluation method in the United States were used to evaluate
Human health risk of benzene series. The results showed that there were 6 sources in the
PMF mode. Natural gas leakage accounted for 32.05%, automobile exhaust accounted for
18.99%, solvent use 13.67%, industrial emissions 2 13.20%, gasoline volatile 11.72%, and
industrial emissions 1 (chemical type) 10.36%. The high value areas of the emission
source were in accordance with the location of pollution sources surrounding the
observation point. The B/T ratio was 0.74, which was at a relatively high level.The
noncarcinogenic risk hazard quotient value HQ at 06:00 reached the highest value. HQ risk
values were within the safe range specified by EPA. HQ of each source was as follows:
automobile exhaust emissions 20.67×10<sup>-2</sup>, solvent use
6.97×10<sup>-2</sup>, natural gas leakage 6.34×10<sup>-2</sup>. In the
carcinogenic risk of benzene, automobile exhaust emissions was 4.11×10<sup>-
6</sup>, and natural gas leakage was 1.09×10<sup>-6</sup>, both were higher than
the EPA specified safety threshold. © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Gas chromatography
Controlled terms:Automobiles - Benzene - Chromatography - Environmental Protection Agency
- Fiber optic sensors - Gas emissions - Hazards - Health risks - Industrial emissions -
Natural gas - Organic compounds - Risk assessment - Volatile organic compounds
Uncontrolled terms:Automobile exhaust emissions - Carcinogenic risk - Hazard quotients -
Natural gas leakage - Noncarcinogenic risk - Online gas chromatography - Source
apportionment - United states environmental protection agencies
Classification code:451.1 Air Pollution Sources - 454.2 Environmental Impact and
Protection - 461.7 Health Care - 522 Gas Fuels - 662.1 Automobiles - 741.1.2 Fiber
Optics - 802.3 Chemical Operations - 804.1 Organic Compounds - 914.1 Accidents and
Accident Prevention
Numerical data indexing:Percentage 1.04e+01%, Percentage 1.17e+01%, Percentage 1.32e+01%,
Percentage 1.37e+01%, Percentage 1.90e+01%, Percentage 3.20e+01%
DOI:10.13227/j.hjkx.201605170
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 34>
Accession number:20171003416404
Title:Distribution, sources and risk assessment of the PAHs in the surface sediments and
water from the daye lake
Authors:Zhang, Jia-Quan (1); Hu, Tian-Peng (1, 2); Xing, Xin-Li (2); Zheng, Huang (2);
Zhang, Li (1); Zhan, Chang-Lin (1); Liu, Hong-Xia (1); Xiao, Wen-Sheng (1); Qi, Shi-Hua
(2)
Author affiliation:(1) School of Environmental Science and Engineering, Hubei Polytechnic
University, Huangshi; 435003, China; (2) School of Environmental Studies, China
University of Geosciences, Wuhan; 430074, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:170-179
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:8 surface sediments and 8 water samples were collected from the Daye Lake in
August 2015. The 16 kinds of EPA control polycyclic aromatic hydrocarbons (PAHs) were
analyzed by GC-MS. The results showed that the PAHs concentrations of surface sediments
and water ranged from 35.94 ng·g<sup>-1</sup>to 2 032.73 ng·g<sup>-
1</sup>and from 27.94 ng·L<sup>-1</sup>to 242.95 ng·L<sup>-1</sup>, with
average contents of 940.61 ng·g<sup>-1</sup>and 107.77ng·L<sup>-1</sup>,
respectively. The distribution of PAHs in surface sediments indicated that the contents
in the center samples were higher than those in the bank samples, but the water showed
nearly the opposite tendency. The 4-5 rings high molecular weight PAHs were the main
components in the surface sediments, and the 2, 4 and 5 rings PAHs were given priority in
water. Compared with the other domestic and oversea lakes, the PAHs pollution of the Daye
Lake was at a moderate level. Source apportionment showed that the PAHs in surface
sediments and water from the Daye Lake came from the combustion source, HWM-PAHs were the
dominant part of the PAHs in the sediment, reflecting the sediment PAHs pollution under
the effects of mining and smelting over a long period; All monomer PAHs and total PAHs
content in sediment did not exceed the ERM and FEL limiting values, showing that there
was no particularly serious ecological risk caused by PAHs in the surface sediments from
the Daye Lake; the incremental lifetime cancer risks assessment showed that the uptake
risk of PAHs in Daye Lake water through the ingestion and dermal absorption were both in
the acceptable range recommended by the USEPA, but all sites had higher risk than the
acceptable risk level recommended by the Sweden environmental protection agency and Royal
society. The pollution of seven carcinogenic PAHs needs prevention and control. ©
2017, Science Press. All right reserved.
Number of references:37
Main heading:Lake pollution
Controlled terms:Aromatic hydrocarbons - Environmental Protection Agency - Health risks -
Lakes - Pollution - Pollution control - Polycyclic aromatic hydrocarbons - Risk
assessment - Sediments - Surficial sediments - Water - Water absorption - Water
pollution
Uncontrolled terms:Acceptable risk levels - Carcinogenic PAHs - Combustion sources - High
molecular weight - Polycyclic aromatic hydrocarbons (PAHS) - Prevention and controls -
Source apportionment - Surface sediments
Classification code:453 Water Pollution - 454.2 Environmental Impact and Protection -
461.7 Health Care - 483 Soil Mechanics and Foundations - 802.3 Chemical Operations -
804.1 Organic Compounds - 914.1 Accidents and Accident Prevention
Numerical data indexing:Mass_Density 1.08e-07kg/m3, Mass_Density 2.79e-08kg/m3 to 2.43e-
07kg/m3
DOI:10.13227/j.hjkx.201606058
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 35>
Accession number:20171003416386
Title:Size distribution and mixing state of black carbon aerosol in nanjing during a
heavy winter pollution event
Authors:Jiang, Lei (1); Tang, Li-Li (1, 2); Pan, Liang-Bao (1, 2); Liu, Dan-Tong (3);
Hua, Yan (1); Zhang, Yun-Jiang (1); Zhou, Hong-Cang (1); Cui, Yu-Hang (1)
Author affiliation:(1) Jiangsu Collaborative Innovation Center of Atmospheric Environment
and Equipment Technology (CICAEET), School of Environmental Science and Engineering,
University of Information Science & Technology, Nanjing; 210044, China; (2) Jiangsu
Environmental Monitoring Center, Nanjing; 210036, China; (3) Centre for Atmospheric
Science, Atmospheric and Environmental Sciences, University of Manchester, Manchester;
M139PL, United Kingdom
Corresponding author:Tang, Li-Li(lily3258@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:13-21
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In December 2013, a lasting haze pollution event occurred in the Central and
East regions of China. Here in this paper, using a single-particle soot photometer (SP2),
we studied mass concentrations, mixing states, and size distributions of black carbon
(BC) in this event. The results showed that BC mass concentration in Nanjing during the
observation period was in the range of 1.01-14.05 μg·m<sup>-3</sup>with an
average of 4.39 μg·m<sup>-3</sup>, showing the characteristics of double peaks
for lighter pollution, andhigh in the nighttime and low in the daytime during heavier
pollution. Using the relative coating thickness(D<inf>p</inf>/D<inf>c</inf>)to define
mixing state of black carbon, diurnal variations were higher in early morning and noon
when slightly polluted, and lower during rush hour, indicating the degree of BC ageing
was deeper in the morning and afternoon, with fresher particles near the ground source
emissions during rush hour. The relative coating thickness did not vary greatly
throughout the day when heavily polluted, which was expected to be linked to regional
pollutants and it also showed Gas-solid transformation under high relative humidity. The
average mass and number size distribution had single peaking with the same BC volume-
equivalent diameter in different degrees of pollution, with the peak diameter at 100 nm
for the number distribution when heavily polluted, at 91 nm when slightly polluted, and
at 210 nm for the mass distribution regardless of the degree of pollution. We could find
regional differences of BC sources by comparing the observed research worldwide. This
study has very important reference value for the in-depth understanding of BC pollution
in Yangtze River Delta. © 2017, Science Press. All right reserved.
Number of references:38
Main heading:River pollution
Controlled terms:Coatings - Fog - Mixing - Photometers - Photometry - Pollution - Size
distribution - Soot - Thickness measurement
Uncontrolled terms:Black carbon - High relative humidities - In-depth understanding -
Mixing state - Nanjing - Number size distribution - Regional differences - Single
particle
Classification code:443.1 Atmospheric Properties - 453 Water Pollution - 802.3
Chemical Operations - 804 Chemical Products Generally - 813.2 Coating Materials - 922.2
Mathematical Statistics - 941.3 Optical Instruments - 941.4 Optical Variables
Measurements - 943.2 Mechanical Variables Measurements
Numerical data indexing:Size 1.00e-07m, Size 2.10e-07m, Size 9.10e-08m
DOI:10.13227/j.hjkx.201605167
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 36>
Accession number:20172603860995
Title:Distribution Characteristics and Influencing Factors of Organophosphorus Pesticides
in Typical Soil Environment of Jianghan Plain
Authors:Wang, Jian-Wei (1); Zhang, Cai-Xiang (1); Pan, Zhen-Zhen (2); Liao, Xiao-Ping
(1); Liu, Yuan (1); Lü, You (1); Tang, Mi (1)
Author affiliation:(1) State Key Laboratory of Biogeology and Environmental Geology,
China University of Geosciences, Wuhan; 430074, China; (2) Geography and Tourism College,
Chongqing Normal University, Chongqing; 400047, China
Corresponding author:Zhang, Cai-Xiang(caixiangzhang@yahoo.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1597-1605
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to study the distribution characteristics of organophosphorus
pesticides (OPPs)in the soil of Jianghan plain,78 profile-soil samples from various depth
and 7 surface-soil samples were collected in September,2015 in established groundwater
monitoring field site, Jianghan plain. The OPPs concentrations were determined by gas
chromatography with nitrogen-phosphorus detector(GC-NPD). The results showed that OPPs
were widespread in our studied area. The OPPs concentrations of suface-soil samples
ranged from 89.80 ng·g<sup>-1</sup>to 193.85 ng·g<sup>-1</sup>,with an
average of 140.05 ng·g<sup>-1</sup>, whereas the OPPs concentrations of profile-
soil samples ranged from 19.81 ng·g<sup>-1</sup>to 138.28 ng·g<sup>-
1</sup>,with an average of 40.99 ng·g<sup>-1</sup>. The main ingredients of OPPs
in surface and profile soil samples were methamidophos, omethoate, diazinon and
quinalphos,and the residual amount of 10 kinds of OPPs had posed a threat to agricultural
products according to the America soil pesticide residue limits standards. The horizontal
distribution of OPPs concentration in profile soil followed the order of nearby river
farm area>nearby river area>farm area, namely GS1-1>GS4>GS2>GS3. while the
vertical distribution mostly decreased at first and then increased with increasing depth.
The distribution characteristics of OPPs were also influenced by many factors, such as
application amount of OPPs, the adsorption and desorption actions of soil, vertical
movement of groundwater, the terrain environment in the study area, and the concentration
of soil organic matters. © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Soil surveys
Controlled terms:Agricultural products - Gas chromatography - Groundwater - Nitrogen -
Pesticides - Soil pollution - Soils
Uncontrolled terms:Distribution characteristics - Influencing factors - Jianghan plains -
Organophos-phorus pesticides - Typical soils
Classification code:444.2 Groundwater - 483.1 Soils and Soil Mechanics - 802.3
Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical
Products Generally - 821.4 Agricultural Products
DOI:10.13227/j.hjkx.201609206
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 37>
Accession number:20172603860987
Title:Function of Polyphosphate Kinase Gene in Biological Phosphate Removal During the
Wastewater Treatment Process
Authors:Nan, Ya-Ping (1); Zhou, Guo-Biao (1); Yuan, Lin-Jiang (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture & Technology, Xi'an; 710055, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1529-1535
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study aimed to identify the function of polyphosphate kinase gene (ppk) in
phosphorus removal. With the Red system, the target DNA with the homologous short arms
was amplified in the plasmid pKD4. Then the target DNA was transformed into E. coli
ATCC25922 which already had the suicide plasmid pKD46 by electroporation. The plasmid
pCP20 was transformed into the recombinant strains to delete the kanamycin resistance
gene. With the screening by negative resistance, together with verification using
positive and negative primers, the construction of ppk gene deletion strain E.
coli/ppk<sup>-</sup>Kan<sup>-</sup>was confirmed. The growth characteristics of both the
wild-type strain and the mutant strain were determined, and the phosphate accumulating
characteristics were compared when cultured in the phosphate luxuriant medium after
induced in the phosphate lacking medium. Also the phosphate accumulating characteristics
of the two strains were compared after cultured in the anaerobic and aerobic alternating
conditions for 5 times. The results showed that the ppk deletion strain E.
coli/ppk<sup>-</sup>Kan<sup>-</sup>was successfully constructed. There was no growth
difference between the mutant strain and the wild-type strain. But in the first 4 hours
of log phase, the mutant strain grew faster than the wild-type strain. And 8h later, when
both strains were in stationary phase, the mutant strain grew slower than the wild type,
indicating that ppk affected the growth of the bacteria. Cultured in the phosphate
lacking medium and the phosphate luxuriant medium, the mutant strain's ability of
phosphate accumulating didn't decrease in spite of having no ppk gene. After 5 times
induction, the amounts of phosphorus in both strains were about 1%-2%. The phosphate
amounts in the cells did not increase with increasing inducing times. Polyphosphate or
PHB was detected neither at anaerobic phase nor at the aerobic phase. It indicated that
the deletion of ppk did not affect the phosphorus removal in wastewater treatment
process, and the ppk gene did not show the function of phosphorus removal. © 2017,
Science Press. All right reserved.
Number of references:35
Main heading:Wastewater treatment
Controlled terms:Biological water treatment - DNA - Enzymes - Escherichia coli - Genes -
Phosphorus
Uncontrolled terms:Gene deletion - Growth characteristic - Phosphate removal - Phosphorus
removal - Polyphosphates - Recombinant strains - Wastewater treatment process - Wild-type
strain
Classification code:445.1 Water Treatment Techniques - 452.4 Industrial Wastes
Treatment and Disposal - 461.2 Biological Materials and Tissue Engineering - 804
Chemical Products Generally
Numerical data indexing:Percentage 1.00e+00% to 2.00e+00%, Time 1.44e+04s, Time 2.88e+04s
DOI:10.13227/j.hjkx.201606164
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 38>
Accession number:20172603860980
Title:Influencing Factors on the Degradation of PFOS Through VUV-SO<inf>3</inf><sup>2-
</sup>
Authors:Han, Hui-Li (1); Wang, Hong-Jie (1); Dong, Wen-Yi (1)
Author affiliation:(1) Shenzhen Key Laboratory of Water Resource Application and
Environmental Pollution Control, School of Civil and Environmental Engineering, Harbin
Institute of Technology Shenzhen Graduate School, Shenzhen; 518055, China
Corresponding author:Wang, Hong-Jie(whj1533@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1477-1482
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The objective of this experiment was to investigate the influence of
SO<inf>3</inf><sup>2-</sup>dosage, pH value, initial perfluorooctane sulfonate(PFOS)
concentration as well as coexisting substances on the degradation and defluorination of
PFOS by VUV-SO<inf>3</inf><sup>2-</sup>process. The results indicated that the increase
of SO<inf>3</inf><sup>2-</sup>dosage could lead to rise in the concentration of active
species hydrated electron(e<inf>aq</inf><sup>-</sup>) and thus enhance the degradation
and defluorination of PFOS. As the concentration of SO<inf>3</inf><sup>2-</sup>increased
from 1 mmol·L<sup>-1</sup>to 20 mmol·L<sup>-1</sup>, the degradation and
defluorination rates of PFOS increased from 45% and 40% to 97% and 63%, respectively. The
degradation and defluorination of PFOS were also enhanced with the increment of the
solution pH values, and the defluorination was more sensitive to the pH values. In
addition, more PFOS was degraded with the increase of initial PFOS mass concentration,
although the degradation and defluorination rates of PFOS were reduced. When the initial
PFOS mass concentration changed from 1 mg·L<sup>-1</sup>to 50 mg·L<sup>-
1</sup>, the degradation amount of PFOS after four hrs increased by about 50 times,
probably due to the higher utilization proportion of e<inf>aq</inf><sup>-</sup>at high
pollutants concentration. Last but not least, the influence of co-existing substances,
Cl<sup>-</sup>and HCO<inf>3</inf><sup>-</sup>, on PFOS degradation could be neglected,
whereas their effects on defluorination were observed. Defluorination of PFOS was
enhanced with the increased Cl<sup>-</sup>concentration, however, increased first and
then decreased with the increment of HCO<inf>3</inf><sup>-</sup>concentration. It was
also found that the presence of humic acid(HA) lowered degradation as well as
defluorination of PFOS owing to the blockage of effective UV light and trapping of active
species for photochemical reaction. © 2017, Science Press. All right reserved.
Number of references:22
Main heading:pH
Controlled terms:Hydration - Photochemical reactions
Uncontrolled terms:Hydrated electron - Influencing factors - Perfluorooctane sulfonates -
Photochemical reduction - VUV-SO<inf>3</inf><sup>2-</sup>
Classification code:741.1 Light/Optics - 801.1 Chemistry, General
Numerical data indexing:Mass_Density 1.00e-03kg/m3 to 5.00e-02kg/m3, Molar_Concentration
1.00e+00mol/m3 to 2.00e+01mol/m3, Percentage 4.00e+01% to 9.70e+01%, Percentage 4.50e
+01%, Percentage 6.30e+01%
DOI:10.13227/j.hjkx.201609204
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 39>
Accession number:20172603860992
Title:Assessment of Heavy Metal Pollution and Tracing Sources by Pb & Sr Isotope in
the Soil Profile of Woodland in Quanzhou
Authors:Sun, Jing-Wei (1, 2); Yu, Rui-Lian (1); Hu, Gong-Ren (1); Su, Guang-Ming (1);
Wang, Xiao-Ming (3)
Author affiliation:(1) Department of Environmental Science and Engineering, Huaqiao
University, Xiamen; 361021, China; (2) School of Resources and Environmental Science,
Quanzhou Normal University, Quanzhou; 362000, China; (3) Center of Analysis, Beijing
Research Institute of Uranium Geology, Beijing; 100029, China
Corresponding author:Hu, Gong-Ren(grhu@hqu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1566-1575
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The contents of 8 heavy metal elements (Sr, Ni, Fe, Cr, Cu, Mn, Pb, Zn) and the
lead & strontium isotope composition of soil profile of woodland in Quanzhou city
were analyzed by AAS and ICP-MS, respectively. A modified BCR four-step sequential
extraction procedure was carried out to obtain the speciation fractionation of heavy
metals in the soil profile from 4 stations. The results of the heavy metal elements and
the speciation fractionation of heavy metals in the soil profile showed that the heavy
metal pollution in the woodland in Quanzhou was relatively light, and the main pollution
factor was Sr. The non-residue state of Pb was the highest, leading to the highest
activity. The result of Nemero comprehensive pollution index showed that Sr in the depth
of 0-60 cm was at heavy pollution level. The results of the RSP showed that the activity
of Pb was the highest. The results of EF showed that Pb, Sr, Mn and Zn had exogenous
sources. Factor analysis showed that the main sources of heavy metals were the compound
pollution of agricultural activities, natural resources, and the vehicle exhaust.
Composition of Pb isotopic ratios showed that, Pb in soil profile of woodland in Quanzhou
was from vehicle exhaust and parent material. The contribution rates of the two sources
in the soil profile were calculated by using the two-mixed model. The contribution rates
of parent material and vehicle exhaust were 85.14%(62.53%-98.36%) and 14.86%(1.640%-
37.47%) on average, respectively. Strontium isotope tracing results showed that the main
sources of strontium were also vehicle exhaust and parent material. Coupling both Pb and
Sr isotope ratios agreed with the above mentioned results. © 2017, Science Press.
All right reserved.
Number of references:37
Main heading:Copper
Controlled terms:Factor analysis - Heavy metals - Isotopes - Lead - Manganese -
Multivariant analysis - Pollution - Soils - Strontium - Vehicles - Zinc
Uncontrolled terms:Enrichment factors - Source apportionment - Sr isotopes - Vertical
profile - Woodland
Classification code:483.1 Soils and Soil Mechanics - 531 Metallurgy and Metallography -
543.2 Manganese and Alloys - 544.1 Copper - 546.1 Lead and Alloys - 546.3 Zinc and
Alloys - 549.2 Alkaline Earth Metals - 922 Statistical Methods - 922.2 Mathematical
Statistics
Numerical data indexing:Percentage 1.64e+00% to 3.75e+01%, Percentage 6.25e+01% to 9.84e
+01%, Size 0.00e+00m to 6.00e-01m
DOI:10.13227/j.hjkx.201609131
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 40>
Accession number:20172603861001
Title:Effect of Application of Sewage Sludge Composts on Greenhouse Gas Emissions in Soil
Authors:Yang, Yu-Han (1); Yi, Jian-Ting (1); Zhang, Cheng (1, 2); Chen, Hong (1, 2); Mu,
Zhi-Jian (1, 2)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400715, China
Corresponding author:Zhang, Cheng(zhcheng@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1647-1653
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Effect of application of sewage sludge compost on the emission of greenhouse gas
from soil was investigated by analyzing the dynamic characteristics and emission factor
of CO<inf>2</inf>, CH<inf>4</inf>and N<inf>2</inf>O in soil after spiking two different
composts (A: compost with biochar, B: compost without biochar) with varying fertilizing
amount into soil. The results indicated that emissions of CO<inf>2</inf>and
CH<inf>4</inf>mainly occurred in the plant growth period with low fertilizer amount of
biomass charcoal compost reducing CO<inf>2</inf>emissions, and high application content
increasing CO<inf>2</inf>emissions. CH<inf>4</inf>emission fluxes showed negative values,
indicating that soil could adsorb CH<inf>4</inf>, and the adsorbing amount for control
was significantly higher than those for other treatments (P<0.01). The absorbing
amount in treatment A increased with the fertilizing amount (P<0.05). N<inf>2</inf>O
emissions mainly occurred at the germination and seedling stages, and emission fluxes
increased with the fertilizing amount (P<0.01). N<inf>2</inf>O was considered as the
main generated greenhouse gas during agricultural process with sludge compost, and its
emission factor from sludge compost soil was 1.02%-1.90% (A compost) and 1.28%-2.93% (B
compost), respectively. Biochar could significantly reduce the carbon emission, as the
total greenhouse gas released from soil with biochar compost was 19.49% to 35.56% less
than that in soil without biochar, which was more obvious for N<inf>2</inf>O emission
reduction (compared with CH<inf>4</inf>mitigation). © 2017, Science Press. All right
reserved.
Number of references:29
Main heading:Composting
Controlled terms:Carbon - Carbon dioxide - Charcoal - Emission control - Gas emissions -
Gases - Greenhouse effect - Greenhouse gases - Sewage sludge - Soils
Uncontrolled terms:Agricultural process - Bio chars - Carbon emissions - Compost products
- Dynamic characteristics - Emission characteristics - Emission reduction - Sewage sludge
compost
Classification code:451 Air Pollution - 452.2 Sewage Treatment - 483.1 Soils and Soil
Mechanics - 524 Solid Fuels - 804 Chemical Products Generally - 804.2 Inorganic
Compounds
Numerical data indexing:Percentage 1.95e+01% to 3.56e+01%
DOI:10.13227/j.hjkx.201606060
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 41>
Accession number:20172603860998
Title:Effects of Biochar on Surface Albedo and Soil Respiration in Suburban Agricultural
Soil
Authors:Zhang, Yang-Yang (1); Hu, Xue-Yu (1); Zou, Juan (1); Zhang, Di (1); Chen, Wei
(1); Wang, Xiang-Qian (1); Chen, Yao-Jun (1); Liu, Yang (1)
Author affiliation:(1) School of Environmental Studies, China University of Geosciences,
Wuhan; 430074, China
Corresponding author:Hu, Xue-Yu(huxueyu@cug.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1622-1632
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Biochar application to soils is currently considered as a means of mitigating
climate change by sequestering C, which withdraws CO<inf>2</inf>from the atmosphere and
consequently influences the trend of global climate change. However, only a few studies
have been done on surface albedo variations on farmland, it might be true that the
application of biochar to soil could induce a radiative forcing by changing the surface
albedo. Based on this background, this study aiming at the characterization of seasonal
changes in albedo on the farmland both with plants and without plants, and its effect on
soil temperature, soil moisture, soil respiration and soil organic carbon fractions.
There were 3 major treatments in the experiment with 3 repetition of each major
treatment, namely, CK (the control treatment), BC0.5 (biochar applied at 0.5 kg·
(m<sup>2</sup>·a)<sup>-1</sup>) and BC4.5 (biochar applied at 4.5 kg·
(m<sup>2</sup>·a)<sup>-1</sup>). Each major treatment contained 2 sub-treatments,
which were crop cultivation (+) and non-cultivation (-). The experiment results showed
that in the early stage of crop growth (maize seedling stage to jointing stage, wheat
seedling stage to winter period), the surface albedo of BC4.5+ and BC0.5+ significantly
decreased compared with CK+(P<0.05). The biggest surface albedo decline rates of
BC4.5+ and BC0.5+ in winter wheat season were 23.7%, 17.9% and 44.5%, 44.9% in summer
maize season. The leaf area index of each treatment was remarkably correlated with the
surface albedo. The shadow produced by the development of crop canopy structure would
cover the change of surface color induced by the input of biochar. Under the condition of
bare land, the surface albedo of biochar treatment was significantly decreased compared
with the control treatment(P<0.05). Compared with the control treatments, the soil
CO<inf>2</inf>flux of the biochar treatments was significantly increased(P<0.05). With
the extension of time, the growth rate of soil CO<inf>2</inf>flux of biochar treatment
was decreased gradually. The increase from BC4.5+ to CK+ was gradually reduced from
276.7% to 36.1%, and the increase of BC4.5- from to CK- was significantly reduced from
163.5% to 39.8%. The increase of soil CO<inf>2</inf>flux could be derived from the
mineralization of the readily decomposed carbon fractions in the biochar-soil system. The
decrease of surface albedo caused by the input of biochar had no direct effect on soil
respiration, and the input of biochar could reduce the temperature sensitivity of soil
respiration. This result could provide a foundation for the verification of the chemical
and biological stability of biochar. © 2017, Science Press. All right reserved.
Number of references:31
Main heading:Soils
Controlled terms:Atmospheric radiation - Carbon dioxide - Chemical stability - Climate
change - Crops - Cultivation - Farms - Organic carbon - Plants (botany) - Soil moisture
- Solar radiation
Uncontrolled terms:Agricultural soils - Bio chars - Chemical and biologicals - Global
climate changes - Soil organic carbon - Soil respiration - Surface albedo - Temperature
sensitivity
Classification code:443.1 Atmospheric Properties - 483.1 Soils and Soil Mechanics -
657.1 Solar Energy and Phenomena - 801 Chemistry - 804.1 Organic Compounds - 804.2
Inorganic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest
Control
Numerical data indexing:Percentage 1.64e+02% to 3.98e+01%, Percentage 1.79e+01%,
Percentage 2.37e+01%, Percentage 2.77e+02% to 3.61e+01%, Percentage 4.45e+01%, Percentage
4.49e+01%
DOI:10.13227/j.hjkx.201609149
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 42>
Accession number:20172703864526
Title:Distributions, Sources and Pollution Assessment of Hg in Sediment of Douhe
Reservoir in Tangshan City
Authors:Wu, Ting-Ting (1); Wang, Ming-Meng (2); Chen, Xu-Feng (3); Liu, Wen-Li (3); Li,
Tai-Shan (3); Yan, Hai-Yu (4); He, Tian-Rong (1); Li, Zhong-Gen (4)
Author affiliation:(1) Key Laboratory of Karst Environment and Geohazard Prevention,
Guizhou University, Guiyang; 550003, China; (2) College of Environmental Science and
Engineering, Taiyuan University of Technology, Taiyuan; 030024, China; (3) Tangshan
Municipal Environmental Monitoring Center, Tangshan; 063000, China; (4) State Key
Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of
Sciences, Guiyang; 550081, China
Corresponding author:Li, Zhong-Gen(lizhonggen@vip.skleg.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:979-986
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Sediment cores from Douhe reservoir in Tangshan City were sampled in August
2013, in order to evaluate the mercury (Hg) pollution degree and its possible sources.
Agriculture soils surrounding the Douhe reservoir and sediments from an upstream
reservoir (Daheiting) were also collected. Total mercury (THg), methylmercury (MeHg),
dissolved mercury in pore water (DHg) and organic matter (OM) in sediment of Douhe
reservoir were analyzed, while, only THg in the agriculture soils and upstream reservoir
sediments was determined. Finally, the geoaccumulation index method was applied to
evaluate the Hg pollution status in soils and reservoir sediments. The results showed
that THg content in sediment of Douhe reservoir ranged from 19 to 97 ng·g<sup>-
1</sup>. dw, MeHg (dw) from 0.02 to 1.27 ng·g<sup>-1</sup>, and the contents of
both THg and MeHg were higher in the upper layers than the deeper layers, indicating that
Hg in sediments was increasing in recent years by the exogenetic loadings. THg (dw) in
soils offshore the Douhe reservoir, which is close to a large coal-fired power plant,
averaged at 22 ng·g<sup>-1</sup>. Among the three sediment cores of Douhe
reservoir, the central point had the highest THg, followed by the western site, and the
eastern site had the lowest THg. While, THg content (dw) in sediments of Daheiting
reservoir was much higher, with a mean of 176 ng·g<sup>-1</sup>. Combining all the
above information, we concluded that Hg in Douhe reservoir was mainly derived from the
Daheiting reservoir and the mercury atmospheric deposition from the nearby coal-fired
power plant contributed a less content. THg and MeHg in the sediments of Douhe reservoir
were positively correlated with OM, indicating that OM in sediments had good ability of
adsorbing THg and MeHg, and also played an important role in Hg methylation. The
geoaccumulation index (I<inf>geo</inf>) showed that the Hg pollution status deceased in
this order: central of Daheting, Daba of Daheting, central of Douhe, western of Douhe,
eastern of Douhe, soils surrounding Douhe. Central and western sites in Douhe belonged to
moderate pollution and the eastern site belonged to slight pollution. While, sediments of
Daheiting reservoir, affected by the iron ore mining activities, were in the moderate and
strong pollution status. © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Sediments
Controlled terms:Agriculture - Alkylation - Coal - Coal fueled furnaces - Fossil fuel
power plants - Mercury (metal) - Meteorological problems - Petroleum reservoir evaluation
- Pollution - Reservoirs (water) - Sedimentation - Soils
Uncontrolled terms:Agriculture soils - Atmospheric depositions - Coal-fired power plant -
Geo-accumulation index - Methyl mercury - Pollution assessment - Reservoir sediments -
Total mercuries
Classification code:441.2 Reservoirs - 443.1 Atmospheric Properties - 483 Soil
Mechanics and Foundations - 483.1 Soils and Soil Mechanics - 512.1.2 Petroleum Deposits
: Development Operations - 524 Solid Fuels - 549.3 Nonferrous Metals and Alloys
excluding Alkali and Alkaline Earth Metals - 802.2 Chemical Reactions - 802.3 Chemical
Operations - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
DOI:10.13227/j.hjkx.201609088
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 43>
Accession number:20172703864557
Title:Input and Distribution of Photosynthesized Carbon in Soil-Rice System Affected by
Water Management and Nitrogen Fertilization
Authors:Wang, Ting-Ting (1, 2); Zhu, Zhen-Ke (1); Zhu, Han-Hua (1); Tang, Zhen-Zhu (1,
3); Pang, Jing (3); Li, Bao-Zhen (1); Su, Yi-Rong (1); Ge, Ti-Da (1); Wu, Jin-Shui (1)
Author affiliation:(1) Key Laboratory of Subtropical Agriculture Ecology, Institute of
Subtropical Agriculture, Chinese Academy of Sciences, Changsha; 410125, China; (2)
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing;
100049, China; (3) Faculty of Resources and Environmental Science, Hubei University,
Wuhan; 430062, China
Corresponding author:Zhu, Zhen-Ke(zhuzhenke@isa.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1227-1234
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Fertilizer and water management are two key factors for rice growth. A better
understanding of the carbon (C) cycling in paddy soil requires investigation into the
input characteristics and distribution dynamics of photosynthesized carbon in rice-soil
system. We grew rice (Zhongzao 39) in PVC pots and used the<sup>13</sup>C-
CO<inf>2</inf>continuous labeling method to quantify the allocation of photosynthesized
carbon in rice-soil system under two regimes (Drying-rewetting vs. continuous watering)
and N fertilization (250 mg·kg<sup>-1</sup>vs. no addition). The results showed
that nitrogen fertilizer application increased rice shoot biomass and the amount of C and
N, but had no significant influence on rice root biomass. Thus, nitrogen fertilizer
application decreased rice biomass root/shoot ratio significantly. Drying-rewetting with
N fertilizer treatment resulted in higher total C and N amount by 22% and 33%,
respectively, in the shoot, and by 36% and 44%, respectively in the root than continuous
watering with nitrogen fertilizer treatment. These results indicated that nitrogen
fertilizer application promoted the growth of rice shoot. Nitrogen fertilizer application
significantly increased the<sup>13</sup>C content in rice shoot by 32%-83% over the
control without N addition. Nitrogen fertilizer application also increased
the<sup>13</sup>C recovery in rice shoot by 6%-32%, but decreased that in the root by
18%-59%. Pertaining to water effect, drying-rewetting with N application increased the
amount of<sup>13</sup>C in rice shoot and root. However, without N addition, the amount
and the recovery of<sup>13</sup>C in shoot dropped by 10.3 mg·pot<sup>-1</sup>and
12%, respectively, compared with the continuous watering treatment. The root, on the
other hand, recorded increases in both the amount and the recovery of<sup>13</sup>C by
1.9 mg·pot<sup>-1</sup>and 57%, respectively. Furthermore, the deposition of
assimilated C into rhizosphere-soil increased by both the individual and the interactive
effects of N fertilizer application and drying-rewetting treatment. Thus, combining N
fertilizer and drying-rewetting water management led to more increased allocation and
deposition of photosynthesized carbon in soil-rice system compared with combined
continuous flooding and N application. This study was able to quantify the partitioning
and allocation of rice photosynthesized carbon into different plant and soil pools under
different water and N fertilizer treatments, and can serve as a useful guide for better
water and nutrient management practices in paddy-rice production that can achieve both
sustainable high yield and sequestration of more C within the paddy soil system. ©
2017, Science Press. All right reserved.
Number of references:42
Main heading:Nitrogen fertilizers
Controlled terms:Biomass - Carbon dioxide - Deposition - Drying - Ecology - Fertilizers -
Nitrogen - Recovery - Soils - Water management
Uncontrolled terms:Drying-rewetting - Fertilizer applications - Interactive effect -
Nitrogen fertilization - Nutrient management - Rhizodeposition - Rhizosphere soils - Rice
Classification code:454.3 Ecology and Ecosystems - 483.1 Soils and Soil Mechanics -
802.3 Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic
Compounds
Numerical data indexing:Percentage 1.20e+01%, Percentage 1.80e+01% to 5.90e+01%,
Percentage 2.20e+01%, Percentage 3.20e+01% to 8.30e+01%, Percentage 3.30e+01%, Percentage
3.60e+01%, Percentage 4.40e+01%, Percentage 5.70e+01%, Percentage 6.00e+00% to 3.20e+01%
DOI:10.13227/j.hjkx.201608068
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 44>
Accession number:20172703864519
Title:Characteristics of Spatial Distribution of Bacterial Aerosols Produced by Fountain
Authors:Zhang, Chong-Miao (1); Yuan, Lin (1); Xu, Peng-Cheng (1); Liu, Ke-Xin (1)
Author affiliation:(1) International Science and Technology Cooperation Center for Urban
Alternative Water Resources Development, School of Environmental and Municipal
Engineering, Xi'an University of Architecture and Technology, Xi'an; 710055, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:911-917
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To illuminate the spatial distribution of bacterial aerosols produced by
fountain, sprinkler test was conducted in this study. Escherichia coli NK5449 was used as
the test strain, and bacterial aerosols were sampled by Anderson six-stage air sampler at
different sites around the sprinkler. The concentration and particle size distribution of
bacterial aerosols and the correlation between droplet diameter and bacterial aerosols
concentration were analyzed. The results showed that the concentration of bacterial
aerosols ranged from (38±15) CFU·m<sup>-3</sup>to (676±92)
CFU·m<sup>-3</sup>in the space of 0.75 m to 1.75 m from the ground and 0.5 m to 3
m away from the sprinkler. The bacterial aerosol concentration decreased along with the
increase of the height and the distance between the sampling site and the sprinkler, and
had significant negative correlation with droplet diameter (P<0.05). With the increase
of the distance to sprinkler, the proportion of bacterial aerosol particles with size of
larger than 4.7 μm decreased at first and increased subsequently; while the proportion
of bacterial aerosol particles with size between 2.1 and 4.7 μm increased firstly and
then decreased. The bacterial aerosol particles mainly existed in the part with size
between 1.1 and 4.7 μm at sampling sites more than 0.5 m away from the sprinkler. It
indicated that bacterial aerosols with small size may be inhaled by people far away from
the fountain, and the risk should not be ignored. © 2017, Science Press. All right
reserved.
Number of references:32
Main heading:Spatial distribution
Controlled terms:Aerosols - Drops - Escherichia coli - Fountains - Particle size -
Particle size analysis - Size distribution
Uncontrolled terms:Air samplers - Andersons - Bacterial aerosols - Droplet diameters -
Negative correlation - Sampling site - Six stages
Classification code:921 Mathematics - 922.2 Mathematical Statistics - 951 Materials
Science
Numerical data indexing:Size 1.10e-06m to 4.70e-06m, Size 2.10e-06m to 4.70e-06m, Size
4.70e-06m, Size 5.00e-01m3 to 3.00e+00m3, Size 5.00e-01m, Size 7.50e-01m to 1.75e+00m
DOI:10.13227/j.hjkx.201608102
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 45>
Accession number:20172703864539
Title:Biological Toxicity Evaluation of Domestic Wastewater Based on A<sup>2</sup>/O
Treatment Processes Using a Battery of Bioassays
Authors:Zhang, Qiu-Ya (1); Ma, Xiao-Yan (1); Wang, Xiao-Chang (1); You, Meng (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Corresponding author:Wang, Xiao-Chang(xcwang@xauat.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1084-1092
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to accurately evaluate the comprehensive ecotoxicity of domestic
wastewater and the toxicity reduction efficiency of different treatment processes,
standardized assays focusing on Vibrio fischeri, SOS/umu test and yeast estrogen screen
were applied. Simultaneously, male zebrafish was used to address the mode of action of
endocrine disrupting effects of wastewater and reclaim water on aquatic life. Results of
this study indicated that the influent was severely polluted: highly acute toxicity,
genotoxicity and estrogenicity were observed. After the secondary biological treatment,
the above toxicities were significantly reduced, making the water quality improved.
However, the estrogencity of secondary effluent was detected at 1.89 ng·L<sup>-
1</sup>, which still posed potential risk on the aquatic life in receiving water. In
addition, the up-regulation of estrogen receptor (esr1) and vitellogenin (vtg1) in the
livers of zebrafish was observed after exposure to 2.5 times concentrated wastewaters,
which demonstrated that wastewater modulates hormonal activities of aquatic life by
disturbing target genes expression. Moreover, the slight down-regulation of esr1 was
observed in the gonads. These observations reflect that the evaluation of biological
toxic effect should be analyzed in different tissues or organs, so that more
comprehensive information about the adverse effects of wastewaters on aquatic life can be
obtained. © 2017, Science Press. All right reserved.
Number of references:37
Main heading:Biological water treatment
Controlled terms:Biological organs - Effluents - Electric batteries - Gene expression -
Gene expression regulation - Toxicity - Wastewater treatment - Water pollution - Water
quality
Uncontrolled terms:Domestic wastewater - Estrogenicity - Genotoxicities - Luminescent
bacteria - Security level - Zebrafish
Classification code:445.1 Water Treatment Techniques - 445.2 Water Analysis - 452.3
Industrial Wastes - 452.4 Industrial Wastes Treatment and Disposal - 453 Water
Pollution - 461 Bioengineering and Biology - 702.1 Electric Batteries
Numerical data indexing:Mass_Density 1.89e-09kg/m3
DOI:10.13227/j.hjkx.201607186
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 46>
Accession number:20172703864547
Title:Effects of Organic Loading Rate on Startup Performance of Anaerobic Digestion with
Vinegar Residues
Authors:Dai, Xiao-Hu (1); Yu, Chun-Xiao (1); Li, Ning (1); Dong, Bin (1); Dai, Ling-Ling
(1)
Author affiliation:(1) State Key Laboratory of Pollution Control and Resource Reuse,
College of Environmental Science and Engineering, Tongji University, Shanghai; 200092,
China
Corresponding author:Li, Ning(lining@tongji.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1144-1150
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Biochemical methane potential experiments were conducted to investigate the
effects of organic loading rate on the performance of anaerobic digesters with vinegar
residues. According to the comparisons of methane production and liquid phase
compositions, as well as thermogravimetry, X-ray Diffraction and infrared spectroscopy
analyses, the conclusions could be drawn that: (1) Lower organic loading rate was better
to mitigate the accumulation of VFAs and pH decrease during the hydrolysis and
acidification of organic matters, which consequently improved methane production. When
the inoculum to substrate ratio was 1:1[organic loading rate of 1.78 g·
(L·d)<sup>-1</sup>, pH=7.60], the cumulative methane production was the highest,
reaching 2249.7 mL, and the performance of the digesters was stable. The VFAs content
increased with the increase of the organic loading rate, leading to the suppression and
further the stop of methane production. And when the inoculum to substrate ratio was 1:4
[organic loading rate of 7.12 g·(L·d)<sup>-1</sup>, pH=5.52], the
simultaneous generation of acetate and lactic acids could be achieved at 8000
mg·L<sup>-1</sup>and 2650 mg·L<sup>-1</sup>, respectively. (2) As vinegar
residues were short-range ordered with microcrystalline structure or mainly contained
amorphous substances, they were more biodegradable than feedstocks such as corn stalk.
During the anaerobic digestion processes, the degradation rates of lignin, cellulose and
hemicellulose increased with the decrease of organic loading rate. © 2017, Science
Press. All right reserved.
Number of references:25
Main heading:Loading
Controlled terms:Acetic acid - Anaerobic digestion - Cellulose - Degradation - Infrared
spectroscopy - Methane - Substrates - Thermogravimetric analysis - Volatile fatty acids -
X ray diffraction
Uncontrolled terms:Anaerobic digestion process - Biochemical methane potential -
Cellulose and hemicellulose - Hydrolysis and acidifications - Inoculum to substrate
ratios - Microcrystalline structures - Organic loading rates - Vinegar residues
Classification code:691.2 Materials Handling Methods - 801 Chemistry - 802.2 Chemical
Reactions - 804.1 Organic Compounds - 811.3 Cellulose, Lignin and Derivatives
Numerical data indexing:Mass_Density 2.65e+00kg/m3, Mass_Density 8.00e+00kg/m3, Volume
2.25e-03m3
DOI:10.13227/j.hjkx.201607238
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 47>
Accession number:20172703864513
Title:Characteristics of Reactive VOCs Species During High Haze-Pollution Events in
Suburban Area of Shanghai in Winter
Authors:Gao, Shuang (1); Zhang, Kun (1); Gao, Song (2); Xiu, Guang-Li (1); Cheng, Na (1);
Pan, Yan (3)
Author affiliation:(1) State Environmental Protection Key Laboratory of Environmental
Risk Assessment and Control on Chemical Processes, School of Resources &
Environmental Engineering, East China University of Science and Technology, Shanghai;
200237, China; (2) Shanghai Environmental Monitoring Center, Shanghai; 200235, China; (3)
Shanghai High School, Shanghai; 200231, China
Corresponding author:Xiu, Guang-Li(xiugl@ecust.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:855-866
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on the online measurements of VOCs of high pollution process at the
university site in winter, VOCs' characteristics and species at different levels of haze
pollution were analyzed. Fifty-five VOCs were detected during sampling.
∑<inf>55</inf>VOCs concentrations ranged between 25.5×10<sup>-9</sup>-
1320.3×10<sup>-9</sup>(avg±SD, 240×10<sup>-
9</sup>±181×10<sup>-9</sup>). Toluene and xylene were the major pollutants
during high pollution process, the concentrations of which were higher than those of
industrial area. The university site shared a similar VOC composition with that of
industrial area, which suggested that it might be influenced by the surrounding
industries. VOCs species exhibited high concentrations in nighttime while low
concentrations in daytime. The ozone concentrations were on the contrary. Aromatic
hydrocarbons were predominant with a high percentage of contribution (70.0%) to OFP
(ozone formation potential). Alkenes and alkynes were the second highest group (16.7%).
The OFP of VOCs was 2078.2×10<sup>-9</sup>under the west-south wind direction,
about 4 times higher than the value under other wind directions (505.8×10<sup>-
9</sup>). Aromatic hydrocarbons exhibited a predominant contribution to OFP at different
levels of haze pollution in this area, among which, Toluene and xylene contributed more
than 50% to OFP. The newest version of EPA PMF model was used to identify the major
source of VOCs and evaluate their contributions. Gasoline sources and vehicle exhaust,
refinery and petroleum products, solvent use and organic synthetic materials were the
identified VOC sources in the study area, contributing 33.1%, 31.5%, 30.5%, and 4.9%,
respectively to the ∑<inf>55</inf>VOCs concentrations. © 2017, Science Press.
All right reserved.
Number of references:34
Main heading:Air pollution
Controlled terms:Air pollution control - Aromatic compounds - Aromatic hydrocarbons -
Hydrocarbons - Organic solvents - Ozone - Pollution - Toluene - Volatile organic
compounds - Xylene
Uncontrolled terms:Haze pollutions - Low concentrations - On-line measurement - Ozone
concentration - Ozone formation potentials - Photochemical ozone - Synthetic materials -
Typical species
Classification code:451 Air Pollution - 451.2 Air Pollution Control - 804 Chemical
Products Generally - 804.1 Organic Compounds
Numerical data indexing:Percentage 1.67e+01%, Percentage 3.05e+01%, Percentage 3.15e+01%,
Percentage 3.31e+01%, Percentage 4.90e+00%, Percentage 7.00e+01%
DOI:10.13227/j.hjkx.201609084
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 48>
Accession number:20171003416416
Title:Impact of biodegradable organic matter on the functional microbe activities in
partial nitrification granules
Authors:Wang, Shu-Yong (1); Qian, Fei-Yue (1, 2, 3); Wang, Jian-Fang (1, 2, 3); Shen,
Yao-Liang (1, 2, 3)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Jiangsu Key Laboratory of
Environmental Science and Engineering, Suzhou; 215009, China; (3) Jiangsu High Education
Collaborative Innovation Center of Water Treatment Technology and Material, Suzhou;
215009, China
Corresponding author:Wang, Jian-Fang(wjf302@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:269-275
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To explore the short-term impact of biodegradable organic matter on the
activities of different functional microbes in autotrophic partial nitrification granular
sludge (PNG), the variations of both nitrogen transformation performance and dissolved
oxygen (DO) uptake of PNG were investigated in this study, by carrying out successive
batch tests with and without the organics stressing. The results showed that the higher
the C/N ratio, the lower the specific nitrite accumulation rate of q
(NO<inf>2</inf><sup>-</sup>-N). Meanwhile, the increase of heterotrophic bacteria (HeB)
activities caused the fast DO uptake by PNG, which could effectively suppress nitrite
oxidizing bacteria (NOB) with the low oxygen affinity. When inorganic substrate culture
was employed in the following phase, both HeB and NOB showed low activities, with
significant increase in q(NO<inf>2</inf><sup>-</sup>-N). In short, the adverse effects of
biodegradable organic matter on the performance of PNG system were partially reversible,
which could benefit to enhance the advantage of ammonium oxidizing bacteria (AOB) and
improve the stability of partial nitrification reaction. © 2017, Science Press. All
right reserved.
Number of references:28
Main heading:Bacteria
Controlled terms:Biogeochemistry - Biological materials - Dissolved oxygen - Electronic
guidance systems - Granulation - Microorganisms - Nitration - Nitrification - Nitrogen
oxides - Organic compounds
Uncontrolled terms:Ammonium oxidizing bacteria - Biodegradable organic matter -
Functional microbe activities - Heterotrophic bacterias - Nitrite-oxidizing bacteria -
Partial nitrification
Classification code:461.2 Biological Materials and Tissue Engineering - 461.9 Biology -
481.2 Geochemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804.1
Organic Compounds - 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201607076
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 49>
Accession number:20171003416405
Title:Effects of ph and complexing agents on Sb(V) adsorption onto birnessite and
ferrihydrite surface
Authors:Wang, Hua-Wei (1); Li, Xiao-Yue (1); Li, Wei-Hua (1); Sun, Ying-Jie (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Qingdao
University of Technology, Qingdao; 266033, China
Corresponding author:Sun, Ying-Jie(yjsun1971@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:180-187
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Effects of pH and complexing agents on Sb(V) adsorption onto birnessite and
ferrihydrite surface were investigated. The results indicated that birnessite and
ferrihydrite had strong ability to adsorb Sb(V). The removal efficiencies of Sb(V) by
birnessite and ferrihydrite were dependent on the initial pH in solution. The removal
efficiency of Sb(V) increased with the decrease of solution pH. At pH 5.0, the removal
efficiencies, adsorption rate and adsorption capacity were better than those at pH 7.0 or
9.0. The adsorption process of Sb(V) on birnessite and ferrihydrite could be well
described by the pseudo-second-order model. The Langmuir model best described the
adsorption behavior of Sb(V) by birnessite and ferrihydrite at pH 5.0. The presence of
citric acid or EDTA had significant effect on Sb(V) adsorption onto birnessite and
ferrihydrite. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Adsorption
Controlled terms:Efficiency - pH - Removal
Uncontrolled terms:Adsorption behavior - Adsorption behaviour - Adsorption capacities -
Birnessite - Complexing agents - Ferrihydrites - Pseudo-second order model - Removal
efficiencies
Classification code:801.1 Chemistry, General - 802.3 Chemical Operations - 913.1
Production Engineering
DOI:10.13227/j.hjkx.201606165
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 50>
Accession number:20171003416403
Title:Pollution level, distribution characteristics and risk assessment of 32 PPCPs in
surface water of luomahu lake
Authors:Zhang, Qin (1); Zhang, Sheng-Hu (1); Wang, Zhen (1); Guo, Min (1); Liu, Ji-Ning
(1); Shi, Li-Li (1); Gu, Wen (1)
Author affiliation:(1) Key Laboratory of Pesticide Environmental Assessment and Pollution
Control of National Environmental Protection, Nanjing Institute of Environmental
Sciences, Ministry of Environmental Protection, Nanjing; 210042, China
Corresponding author:Liu, Ji-Ning(ljn@nies.org)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:162-169
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A total of 22 water samples collected from Luomahu Lake were determined using
high performance liquid chromatography tandem mass spectrometry(HPLC-MS/MS) to evaluate
the pollution level, spatial distribution and ecological risk of 32 PPCPs. 23 PPCPs were
detected in surface water of Luomahu Lake and the total concentrations of 22 samples were
892-1 536 ng·L<sup>-1</sup>. The concentration of norfloxacin (256-707
ng·L<sup>-1</sup>) was the highest among the detected PPCPs, followed by
ketoprofen (85-438 ng·L<sup>-1</sup>), acesulfame (101-290 ng·L<sup>-
1</sup>) and naproxen (1.9-112 ng·L<sup>-1</sup>). Spatial differences were found
in concentrations of PPCPs in various sampling sites. Concentrations of PPCPs in
northeast of Luomahu Lake were higher than those of southwest. Concentration of PPCPs in
Fangtinghe River was high and that of Zhangshanzha River was relatively low. The risk
assessment of 13 pharmaceutical PPCPs showed that risk quotients(RQs) of norfloxacin were
0.26-0.72, posing medial risk to aquatic ecosystem. Gemifibrozil posed low ecological
risks with RQs>0.01 in most sampling sites. RQs of other 11 PPCPs were less than 0.01,
posing no ecological risks. The combined risk quotients of 12 PPCPs in water of Luomahu
Lake were 0.29-0.75, indicating that those compounds posed an medial risk to aquatic
ecosystem. Human health risk assessment showed that the RQs were less than one for 6
selected PPCPs, indicating that these compounds did not appear to pose an appreciable
risk to human health by potential environmental exposure from drinking water. ©
2017, Science Press. All right reserved.
Number of references:48
Main heading:Risk assessment
Controlled terms:Aquatic ecosystems - Drug products - Ecology - Ecosystems - Health -
Health risks - High performance liquid chromatography - Lake pollution - Lakes - Liquid
chromatography - Mass spectrometry - Pollution - Potable water - River pollution -
Surface waters - Water - Water pollution
Uncontrolled terms:Distribution characteristics - Ecological risk assessment -
Environmental exposure - High-performance liquid chromatography tandem mass
spectrometries - Human health risk assessment - Pharmaceuticals and personal care
products - Risk to human health - Spatial differences
Classification code:444 Water Resources - 444.1 Surface Water - 453 Water Pollution -
454.3 Ecology and Ecosystems - 461.6 Medicine and Pharmacology - 461.7 Health Care -
801 Chemistry - 914.1 Accidents and Accident Prevention
Numerical data indexing:Mass_Density 1.01e-07kg/m3 to 2.90e-07kg/m3, Mass_Density 1.90e-
09kg/m3 to 1.12e-07kg/m3, Mass_Density 2.56e-07kg/m3 to 7.07e-07kg/m3, Mass_Density
8.50e-08kg/m3 to 4.38e-07kg/m3, Mass_Density 8.92e-07kg/m3 to 1.54e-06kg/m3
DOI:10.13227/j.hjkx.201606184
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 51>
Accession number:20171003416407
Title:Effect of dissolved humic acid on thyroid receptor antagonistic activity of zinc in
aquatic environment
Authors:Ai, Yang (1); Kong, Dong-Dong (1); Yu, Chang (1); Shen, Yang (1); Li, Jian (1)
Author affiliation:(1) Engineering Research Center of Ground Water Pollution Control and
Remediation, College of Water Science, Beijing Normal University, Beijing; 100875, China
Corresponding author:Li, Jian(lijian@bnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:195-200
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A rapid recombinant human thyroid (hTR) gene yeast bioassay was used to evaluate
the effect of dissolved humic acid on thyroid receptor antagonistic activity of
ZnCl<inf>2</inf>. The concentration of bio-available zinc after its reaction with
dissolved humic acids was measured by anodic stripping voltammetry(ASV). Furthermore, the
reaction mechanism of humic acid and zinc was investigated by three-dimensional
excitation-emission matrix fluorescence spectroscopy (3DEEM). The results revealed that
ZnCl<inf>2</inf>demonstrated strong thyroid receptor antagonistic activity, and the
concentration inhibiting 20% of the maximum effect of ZnCl<inf>2</inf>was
1.70×10<sup>-5</sup>mol·L<sup>-1</sup>. The thyroid receptor antagonistic
activity of ZnCl<inf>2</inf>was reduced by 30%-50% after the reaction of dissolved humic
acids. The results of ASV showed that the concentration of bio-available zinc was
decreased after the reaction of dissolved humic acids, the result was similar to that of
bioassay test. The thyroid receptor antagonistic activity of the mixed solution of humic
acid and ZnCl<inf>2</inf>was increased after UV radiation treatment, however it was still
lower than the antagonistic activity induced by ZnCl<inf>2</inf>. The results of 3DEEM
showed that ZnCl<inf>2</inf>could reduce the fluorescence peak intensity of humic acid,
which could intuitively characterize the interaction between humic acid and
ZnCl<inf>2</inf>. The above results can provide basic data and theoretical support for
zinc toxicity study in aquatic environment and the establishment of water quality
criteria for znic. © 2017, Science Press. All right reserved.
Number of references:32
Main heading:Enzyme immobilization
Controlled terms:Bioassay - Biological materials - Dissolution - Fluorescence -
Fluorescence spectroscopy - Organic acids - Voltammetry - Water analysis - Water quality
- Zinc
Uncontrolled terms:3DEEM - Anodic stripping voltammetry - Antagonistic activity -
Excitation-emission matrix fluorescence spectroscopies - Humic acid - Radiation
treatments - Thyroid disrupting effects - Water quality criteria
Classification code:445.2 Water Analysis - 461.2 Biological Materials and Tissue
Engineering - 461.6 Medicine and Pharmacology - 546.3 Zinc and Alloys - 741.1
Light/Optics - 741.3 Optical Devices and Systems - 801.4.1 Electrochemistry - 802.3
Chemical Operations - 804.1 Organic Compounds
Numerical data indexing:Percentage 2.00e+01%, Percentage 3.00e+01% to 5.00e+01%
DOI:10.13227/j.hjkx.201605211
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 52>
Accession number:20171003416419
Title:Effect of cadmium on biodegradation of nonylphenol by pseudomonas aeruginosa
Authors:Shi, Guang-Yu (1); Cheng, Yuan-Yuan (1); Shi, Wei-Lin (1)
Author affiliation:(1) College of Environmental Science and Engineering, Suzhou
University of Science and Technology, Suzhou; 215009, China
Corresponding author:Shi, Wei-Lin(weilin-shi@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:294-300
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The influence of Cd on the degradation of nonylphenol (NP) by P.aeruginosa SH1
was investigated in this study. The investigation revealed that biomass of the strain was
significantly declined with the increase of Cd<sup>2+</sup>concentration. The biomass was
declined by 27.1% in the presence of 10 mg·L<sup>-1</sup>Cd<sup>2+</sup>after 24
h. The addition of Cd<sup>2+</sup>had a great influence on adsorption of NP by the
strain. As for the effect of living stain, adsorption by P.aeruginosa SH1 cells was
stimulated at low concentrations of Cd<sup>2+</sup>(0.5 mg·L<sup>-1</sup>), while
inhibited at higher levels(≥5 mg·L<sup>-1</sup>). As for inactivation of
microbes, adsorption by cells was stimulated at higher concentrations, but was only
slightly influenced at low levels. The results showed that the intracellular enzymes had
much greater degradation rate than the living cells. Different concentrations of
Cd<sup>2+</sup>had different effects on bacteria and intracellular enzyme degradation of
NP separately. The degradation efficiency when using intracellular enzymes and bacteria
was inhibited at higher levels of Cd<sup>2+</sup>and the intracellular enzyme inhibition
was more significant. Degradation by cells was stimulated at low concentrations of
Cd<sup>2+</sup>, but no significant impact was found on that by intracellular enzymes.
The degradation process of NP by intracellular enzymes of the strain conformed to the
first-order kinetic model. The highest reaction rate was achieved when the concentrations
of Cd<sup>2+</sup>was 0.5 mg·L<sup>-1</sup>and the half-life of this substrate was
5.5 h. However, the degradation process of NP by the strain did not conform to the
first-order kinetic model. © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Enzyme inhibition
Controlled terms:Adsorption - Bacteria - Biodegradation - Cells - Cytology - Degradation
- Enzyme kinetics - Enzymes - Kinetic parameters - Kinetic theory - Kinetics - Phenols -
Pollution
Uncontrolled terms:Degradation efficiency - Degradation process - Different effects -
First-order kinetic models - Intracellular enzyme - Low concentrations - Nonylphenols -
Pseudomonas aeruginosa
Classification code:461.2 Biological Materials and Tissue Engineering - 461.8
Biotechnology - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804.1 Organic
Compounds - 931 Classical Physics; Quantum Theory; Relativity
Numerical data indexing:Mass_Density 5.00e-04kg/m3, Percentage 2.71e+01%, Time 1.98e+04s,
Time 8.64e+04s
DOI:10.13227/j.hjkx.201607107
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 53>
Accession number:20171003409567
Title:Straw composts with composite inoculants and their effects on soil carbon and
nitrogen contents and enzyme activity
Authors:Nie, Wen-Han (1, 2); Qi, Zhi-Ping (2, 4); Feng, Hai-Wei (2); Sun, Yu-Jing (3);
Zhi, Yue-E (2); Zhang, Jin-Zhong (1); Zhang, Dan (2)
Author affiliation:(1) Key Laboratory of Eco-environments in Three Gorges Reservoir
Region, College of Resources and Environment, Southwest University, Chongqing; 400715,
China; (2) Key Laboratory of Urban Agriculture (South), School of Agriculture and
Biology, Shanghai Jiao Tong University, Shanghai; 200240, China; (3) Agro-technical
Extension and Service Center of Shanyang Town, Jinshan District, Shanghai; 201518, China;
(4) Sino-Singapore Thaisheng Agricultural Demonstration Farm, Shanghai; 202161, China
Corresponding author:Zhang, Jin-Zhong(jzhzhang@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:783-791
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The utilization of straw resources is of great significance to agricultural
environmental protection and sustainable agricultural development. Based on the isolated
15 high-efficient cellulose degrading bacteria in the laboratory, the composite
inoculants (JFB-1) which can effectively degrade crop straw were screened, and the
effects of straw composts with the composite inoculants on soil carbon and nitrogen
contents and enzyme activity were studied. The results showed that the composite
inoculants could accelerate straw decomposition for 1-2 d during single fermentation
period, and the organic matter contents in straw composts reached 403.5-515.1
g·kg<sup>-1</sup>, while the ratio of carbon and nitrogen decreased from 10.53 to
15.30. The pot experiments found that the application effects of rice straw composts were
generally better than those of corresponding asparagus straw composts. Compared with the
control compost of rice straw, when the application amount of rice straw compost using
the composite inoculants was 150 g·kg<sup>-1</sup>, the contents of soil organic
matter and total nitrogen increased by 33.5% and 7.3%, and soil urease and cellulase
activities increased by 16.7% and 30.8%, respectively. Compared with no fertilization
treatment, the application of straw composts could improve soil microbial community
structure, and increase microbial diversity indices. When the application amount of rice
straw compost using the composite inoculants was 100 g·kg<sup>-1</sup>, the
biomass of common Chinese cabbage cultivated for 30 d increased by 46.4% compared to the
control compost of rice straw. These results indicated that the composite inoculants have
great application potential in straw composts. © 2017, Science Press. All right
reserved.
Number of references:29
Main heading:Composting
Controlled terms:Agriculture - Biodegradation - Biogeochemistry - Biological materials -
Enzyme activity - Enzymes - Microorganisms - Nitrogen - Organic compounds - Soils
Uncontrolled terms:Cellulose degrading bacteria - Organic matter content - Soil enzyme
activity - Soil microbial community - Soil microbial community structure - Soil nutrients
- Straw composts - Sustainable agricultural development
Classification code:461 Bioengineering and Biology - 481.2 Geochemistry - 483.1 Soils
and Soil Mechanics - 804 Chemical Products Generally - 804.1 Organic Compounds - 821
Agricultural Equipment and Methods; Vegetation and Pest Control
Numerical data indexing:Percentage 1.67e+01%, Percentage 3.08e+01%, Percentage 3.35e+01%,
Percentage 4.64e+01%, Percentage 7.30e+00%
DOI:10.13227/j.hjkx.201607140
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 54>
Accession number:20171003416402
Title:Comparison of nitrogen and phosphorus uptake and water purification ability of five
submerged macrophytes
Authors:Jin, Shu-Quan (1); Zhou, Jin-Bo (1); Bao, Wei-Hong (2); Chen, Jun (3); Li, Dan-
Dan (3); Li, Yang (1)
Author affiliation:(1) Ecology and Environment Institute, Ningbo Academy of Agricultural
Science, Ningbo; 315040, China; (2) Environmental Protection Research and Design
Institute of Ningbo, Ningbo; 315012, China; (3) Ningbo Yima Environmental Biotechnology
Co., Ltd., Ningbo; 315000, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:156-161
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Uptake of nitrogen(N) and phosphorus(P) and their purification capacity for five
native submerged macrophytes were investigated in laboratory simulated hydrostatic
conditions, including Hydrilla verticillata, Vallisneria natans, Ceratophyllum demersum,
Myriophyllum spicatum, Potamogeton maackianus. The results indicated that the moisture
contents of different submerged macrophytes were almost the same before and after the
test,with the range of 89.8%-92.0%. The net accumulated biomass changed from 1.52
g·m<sup>-2</sup>to 12.92 g·m<sup>-2</sup>among different submerged
macrophytes, and the highest net accumulated biomass of Hydrilla verticillata was 8.5
times higher than the lowest plant of Potamogeton maackianus. The N and P contents of
five submerged macrophytes ranged from 26.54 to 34.44g·kg<sup>-1</sup>and from
2.54 to 4.01g·kg<sup>-1</sup>, respectively, and the N and P contents of
Ceratophyllum demersum were relatively high. Total N and P removal efficiency of
different submerged macrophyte treatments had ranges of 63.8%-83.1% and 49.2%-70.8%,
significantly higher than those of the CK treatment (39.9% and 36.9%), respectively, and
the removal efficiency decreased in the order of Hydrilla verticillata>Ceratophyllum
demersum>Vallisneria natans>Myriophyllum spicatum>Potamogeton maackianus. Total
N and P removal efficiencies of different submerged macrophyte treatments were
significantly correlated with net accumulated biomass, with correlation coefficients of
0.994 (P<0.01) and 0.996 (P<0.01). The contribution of direct N and P uptake to
different submerged macrophytes had the ranges of 1.5%-13.3% and 2.2%-13.2%, and the
synergism contribution (deducting self-purification capacity of water) of different
submerged macrophytes ranged 22.5%-29.9% and 10.1%-20.6%, indicating that the synergistic
effect of submerged macrophytes purification was much more significant than the direct
uptake effect in the process of water purification. © 2017, Science Press. All right
reserved.
Number of references:29
Main heading:Purification
Controlled terms:Biomass - Efficiency - Nitrogen - Phosphorus - Removal - Water treatment
plants
Uncontrolled terms:Ceratophyllum demersum - Correlation coefficient - Hydrostatic
conditions - Myriophyllum spicatum - Nitrogen and phosphorus - Submerged macrophytes -
Submerged plants - Water purification
Classification code:445.1 Water Treatment Techniques - 804 Chemical Products Generally
- 913.1 Production Engineering
Numerical data indexing:Percentage 1.01e+01% to 2.06e+01%, Percentage 1.50e+00% to 1.33e
+01%, Percentage 2.20e+00% to 1.32e+01%, Percentage 2.25e+01% to 2.99e+01%, Percentage
3.69e+01%, Percentage 3.99e+01%, Percentage 4.92e+01% to 7.08e+01%, Percentage 6.38e+01%
to 8.31e+01%, Percentage 8.98e+01% to 9.20e+01%
DOI:10.13227/j.hjkx.201606135
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 55>
Accession number:20172603860969
Title:Modeling of Water Quality Response to Land-use Patterns in Taizi River Basin Based
on Partial Least Squares
Authors:Li, Lin-Lin (1, 2); Zhang, Yi-Zhang (2); Tang, Chang-Yuan (3); Zheng, Lei (1, 2);
Meng, Wei (2); Lu, Shao-Yong (2); Dun, Yu (4)
Author affiliation:(1) College of Water Sciences, Beijing Normal University, Beijing;
100875, China; (2) State Key Laboratory of Environmental Criteria and Risk Assessment,
Chinese Research Academy of Environmental Sciences, Beijing; 100012, China; (3) College
of Environmental Sciences and Engineering, Sun Yat-sen University, Guangzhou; 510275,
China; (4) Institute of Hydrogeology and Environmental Geology, Chinese Academy of
Geological Science, Shijiazhuang; 050061, China
Corresponding author:Zhang, Yi-Zhang(zhangyz@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1376-1383
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Land use change in river basin is one of the most significant factors that
influence river water quality. Based on remote sensing images and river water quality
data of Taizi River Basin, partial least squares (PLS) model was applied to explore the
relationship between water quality and land use patterns at sub-watershed scale. In this
study, PLS model was established by using the percentage of area of land use patterns
from seven different sub-watersheds as the variables and the concentrations of four water
quality parameters as the observations. The established model was further tested with the
data from other sub-watersheds in Taizi River Basin. The results indicated that total
nitrogen (TN) and nitrate (NO<inf>3</inf><sup>-</sup>) were significantly associated with
land use types in Taizi River Basin with determination coefficient (R<sup>2</sup>)
greater than 0.62. As for chloride (Cl<sup>-</sup>) and sulfate (SO<inf>4</inf><sup>2-
</sup>), measured values and fitted values had a relatively low fitting precision
(R<sup>2</sup><0.5), which meant land use pattern was not the main factor affecting
the concentrations of Cl<sup>-</sup>and SO<inf>4</inf><sup>2-</sup>in river water.
Meanwhile, river water quality had a strong correlation with the percentage of area of
unused land at the sub-basin scale (influence coefficient >0.24), although unused land
area in the Taizi river basin was small. © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Water resources
Controlled terms:Image reconstruction - Land use - Least squares approximations -
Nitrates - Rivers - Water quality - Watersheds
Uncontrolled terms:Determination coefficients - Influence coefficient - Land use pattern
- Model of water quality - Partial least square (PLS) - Partial least squares models -
Taizi rivers - Water quality parameters
Classification code:403 Urban and Regional Planning and Development - 444 Water
Resources - 444.1 Surface Water - 445.2 Water Analysis - 804.2 Inorganic Compounds -
921.6 Numerical Methods
DOI:10.13227/j.hjkx.201605109
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 56>
Accession number:20172603861007
Title:Bioaccumulation and Correlation of Heavy Metals in Human Hairs From Urban and Rural
Areas of Chongqing
Authors:He, Ming-Jing (1, 2); Li, Qi (1); Wang, Deng-Xiang (1); Zhao, Jia-Yuan (1); Yang,
Ting (1)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400716, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1697-1703
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In the present study, human hair samples were collected in Chongqing to detect
the concentrations of heavy metals including Cd, Cu, Ni, Pb and Zn by flame atomic
absorption spectrophotometry. Meanwhile, the relationship between the content of heavy
metals and age, gender and smoking habits was also analyzed, and the potential sources of
the heavy metals in human hair were understood through correlation analysis and principal
component analysis. The results showed that the mean concentrations of Cd, Cu, Ni, Pb and
Zn were 3.1, 24.3, 9.7, 42.8 and 209.6 μg·g<sup>-1</sup>, respectively in urban
areas, while the mean contents were 0.9, 15.8, 5.6, 15.2 and 173.4 μg·g<sup>-
1</sup>, respectively in rural area. The residents living in urban areas exhibited
significantly higher concentrations than those in rural area, revealing the same heavy
metal pattern with that in soils (t-test, P<0.01). No obvious trend was observed
between the contents of heavy metals and age, except that the contents of Cu and Zn were
increasing with the growth of age. Significantly higher concentrations of Cd and Pb were
both observed in male hair and smokers than those in female and non-smokers, respectively
in urban and rural areas (P<0.01). Similar correlation patterns among Cd, Cu, Ni and
Pb were found both in urban and rural areas. According to principal component analysis,
Cu, Ni and Pb contaminations had similar sources in urban areas, whereas Cd, Ni and Pb
had similar sources in rural area. © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Copper
Controlled terms:Biochemistry - Cadmium - Correlation methods - Heavy metals - Lead -
Metal analysis - Nickel - Pollution - Principal component analysis - Rural areas - Zinc
Uncontrolled terms:Chongqing - Correlation analysis - Correlation patterns - Flame atomic
absorption spectrophotometry - Gender - Hair - Mean concentrations - Urban and rural
areas
Classification code:531 Metallurgy and Metallography - 544.1 Copper - 546.1 Lead and
Alloys - 546.3 Zinc and Alloys - 548.1 Nickel - 549.3 Nonferrous Metals and Alloys
excluding Alkali and Alkaline Earth Metals - 801.2 Biochemistry - 922.2 Mathematical
Statistics
DOI:10.13227/j.hjkx.201610030
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 57>
Accession number:20172603860985
Title:Effect of SRT on Stability of Yeast-SBR in Treating Oil-containing Wastewater
Authors:Lü, Wen-Zhou (1); Zhang, Shu-Lin (1); Qiao, Yu-Xiang (1); Liu, Ying (1)
Author affiliation:(1) College of Architectural, Civil Engineering and Environment,
Ningbo University, Ningbo; 315211, China
Corresponding author:Liu, Ying(liuying1@nbu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1513-1519
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Sludge retention time(SRT) is a crucial parameter to influence the stability of
biological wastewater treatment systems. Especially, the effects of SRT on yeast-
wastewater treatment remain unclear. In this study, mixtures of yeast strains were
applied to treat oil-containing wastewater in sequencing batch reactors(SBR) and the
effects of sludge retention time(SRT as 5, 10, 20, 40 d) on the removal efficiency of
pollutants, contents and composition of extracellular polymeric substances(EPS), yeast
cells settleability and yeast communities were investigated. The results showed that the
recommended SRT was 5-10 d for the yeast-SBR system; Higher SRT led to decrease of COD
removal rate and content of EPS; the tightly-bounded EPS was the major one which
consisted of polysaccharides. SRT of 5-40 d had no significant effects on the SVI of
yeast cells, however, longer SRT (>20 d) resulted in the increase of mycelial cells
and a tendency to produce the filamentous bulking. In the continuous operation of SBR,
three extraneous yeast strains capable of utilizing or degrading oil were identified in
the systems under the short and long SRT. To conclude, shorter SRT was favorable for the
system stability in treating oil-containing wastewater by yeasts. © 2017, Science
Press. All right reserved.
Number of references:28
Main heading:Wastewater treatment
Controlled terms:Activated sludge process - Batch reactors - Biological water treatment -
Cells - Cytology - Polymers - System stability - Yeast
Uncontrolled terms:Biological waste water treatment - Continuous operation -
Extracellular polymeric substances - Filamentous bulking - Mycelial cells - Removal
efficiencies - Sequencing batch reactors - Sludge retention time
Classification code:445.1 Water Treatment Techniques - 452.2 Sewage Treatment - 452.4
Industrial Wastes Treatment and Disposal - 461.2 Biological Materials and Tissue
Engineering - 802.1 Chemical Plants and Equipment - 815.1 Polymeric Materials - 822.3
Food Products - 961 Systems Science
DOI:10.13227/j.hjkx.201607175
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 58>
Accession number:20172603860990
Title:Effect of Environment Adjustment Layers on Nitrogen Transformation in Anaerobic
Bioreactor Landfills
Authors:He, Zheng-Kun (1); Song, Bo-Yu (2, 3); Zhu, Nan-Wen (1); Dong, Jun (3)
Author affiliation:(1) School of Environmental Science and Engineering, Shanghai Jiao
Tong University, Shanghai; 200240, China; (2) Environmental Protection Research Institute
of Light Industry, Beijing; 100089, China; (3) Key Laboratory of Groundwater Resources
and Environment, College of Environment and Resources, Jilin University, Changchun;
130021, China
Corresponding author:Dong, Jun(dongjun@jlu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1551-1557
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To investigate the perennial effect of environment adjustment layers on the
interior environment and nitrogen transformation in anaerobic bioreactor landfills, three
sets of simulated anaerobic bioreactor landfills and two kinds of environment adjustment
layers of mineralized refuse with heavy calcium carbonate (R2) and mineralized refuse
with natural zeolites (R3) were designed and established. The degradation and
transformation of nitrogen in waste and leachate had been monitored for 390 days. The
results showed that, the value orders of pH, alkalinity, oxidation reduction potential
and moisture content (MS) were pH(R2)>pH(R3)>pH(R1), alkalinity (R2)>alkalinity
(R3)>alkalinity (R1), Eh(R2)<Eh(R3)<Eh(R1) and MS(R3)>MS(R2)>MS(R1). In
R1, R2 and R3, the degradation rates of total nitrogen, ammonia nitrogen, nitrate
nitrogen in waste were 79.2%, 82.3% and 88.5%, 48.3%, 60.1% and 67.7%, 38.5%, 44.2% and
53.4%, respectively. Concentration comparison results of total nitrogen, ammonia nitrogen
and nitrate nitrogen in leachate were TN(R3)<TN(R2)<TN(R1), NH<inf>4</inf><sup>
+</sup>-N(R3)<NH<inf>4</inf><sup>+</sup>-N(R1)<NH<inf>4</inf><sup>+</sup>-N(R2)
(Chinese Character)NO<inf>3</inf><sup>-</sup>-N(R3)<NO<inf>3</inf><sup>-</sup>-N(R2)
<NO<inf>3</inf><sup>-</sup>-N(R1). Additionally, both of mineralized refuse with heavy
calcium carbonate and mineralized refuse with natural zeolites could long-term adjust and
optimize the interior environment of anaerobic bioreactor landfills for the degradation
and conversion of nitrogen. Mineralized waste with natural zeolite could not only promote
the degradation and transformation of nitrogen components in waste and leachate, but also
control the accumulation of ammonia nitrogen through leachate recirculation. © 2017,
Science Press. All right reserved.
Number of references:38
Main heading:Nitrogen
Controlled terms:Alkalinity - Ammonia - Bioconversion - Bioreactors - Calcium - Calcium
carbonate - Degradation - Land fill - Leachate treatment - Nitrates - pH - pH effects -
Zeolites
Uncontrolled terms:Anaerobic bioreactors - Effect of environments - Environment
adjustment layers - Heavy Calcium Carbonate - Interior environments - Nitrogen
transformations - Oxidation reduction potential - Transformation
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal -
549.2 Alkaline Earth Metals - 801.1 Chemistry, General - 802.1 Chemical Plants and
Equipment - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.2
Inorganic Compounds
Numerical data indexing:Age 1.07e+00yr, Percentage 3.85e+01%, Percentage 4.42e+01%,
Percentage 4.83e+01%, Percentage 5.34e+01%, Percentage 6.01e+01%, Percentage 6.77e+01%,
Percentage 7.92e+01%, Percentage 8.23e+01%, Percentage 8.85e+01%
DOI:10.13227/j.hjkx.201606046
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 59>
Accession number:20172603860966
Title:Catalytic Combustion of Soot Particulates over Rare Earth Pyrochlore Oxides Doped
with Transition Metals
Authors:Li, Xi-Feng (1, 2); Sun, Yu-Qi (2); Wang, Zhong-Peng (2); Mu, Zong-Gang (2); Cui,
Zhao-Jie (1)
Author affiliation:(1) School of Environmental Science and Engineering, Shandong
University, Ji'nan; 250100, China; (2) College of Chemistry and Chemical Engineering,
University of Ji'nan, Ji'nan; 250022, China
Corresponding author:Wang, Zhong-Peng(chm_wangzp@ujn.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1348-1356
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Catalytic combustion is an efficient way to remove soot particulates from
automobile exhausts. A series of rare earth pyrochlore oxides
La<inf>2</inf>Sn<inf>1.8</inf>TM<inf>0.2</inf>O<inf>7</inf>(TM=Sn, Mn, Fe, Co, Cu) were
prepared with CTAB-assisted sol-gel method. The products were characterized by
XRD,N<inf>2</inf>Adsorption-Desorption, SEM, FT-IR, H<inf>2</inf>-TPR and PL techniques.
Their catalytic activity for soot oxidation was investigated by TPO under tight
conditions in both O<inf>2</inf>and NO+O<inf>2</inf>atmospheres. After calcination at
900℃, the as-synthesized oxides with pure pyrochlore phase displayed nanospheres
with diameter of 30-60 nm and relatively large surface areas. The partial substitution of
Sn with transition metals largely influenced the reduction behavior of pyrochlores
especially on the low temperature range in H<inf>2</inf>-TPR profiles, which was due to
the interactions between Sn and transition metals. The improved oxygen mobility might be
derived from the structure defects induced by transition metals doping, which could be
helpful in oxidation reactions. In comparison with uncatalyzed reactions, the
La<inf>2</inf>Sn<inf>2</inf>O<inf>7</inf>catalyst exhibited modest catalytic activity for
soot combustion, while transition metals incorporation further enhanced the activity and
selectivity. The improved activity of transition metals doped samples was likely to be
associated with the improved reducibility and increased surface oxygen vacancies on the
pyrochlore oxides. The presence of NO in the gas phase significantly enhanced the soot
oxidation activity, which was due to the promotion effect of NO<inf>2</inf>. Especially,
the densities of active oxygen sites and turnover frequency (TOF) values of the
catalysts, quantified by isothermal anaerobic titration with soot as a probe molecule,
were used to explain the different soot combustion behaviors. Among the pyrochlore
oxides, the Co-doped pyrochlore sample displayed the highest ignition activity and the
largest intrinsic activity with TOF of 3.20×10<sup>-3</sup>s<sup>-1</sup>. ©
2017, Science Press. All right reserved.
Number of references:37
Main heading:Catalyst activity
Controlled terms:Binary alloys - Catalysis - Catalyst selectivity - Catalysts - Catalytic
oxidation - Combustion - Dust - Ionization of gases - Lanthanum alloys - Metals -
Nitrogen compounds - Oxidation - Oxygen - Oxygen vacancies - Rare earths - Sol-gel
process - Sol-gels - Soot - Tin - Tin alloys - Transition metal compounds - Transition
metals - Vacancies
Uncontrolled terms:Catalytic combustion - Intrinsic activities - Oxidation reactions -
Partial substitution - Pyrochlores - Soot particulates - Surface oxygen vacancies -
Uncatalyzed reactions
Classification code:451.1 Air Pollution Sources - 531 Metallurgy and Metallography -
546.2 Tin and Alloys - 547.2 Rare Earth Metals - 802.2 Chemical Reactions - 803
Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.2
Inorganic Compounds - 812.3 Glass - 933.1 Crystalline Solids
Numerical data indexing:Size 3.00e-08m to 6.00e-08m
DOI:10.13227/j.hjkx.201609228
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 60>
Accession number:20172603860962
Title:Pollution Characteristics of NH<inf>4</inf><sup>+</sup>,NO<inf>3</inf><sup>-
</sup>,SO<inf>4</inf><sup>2-</sup>in PM<inf>2.5</inf>and Their Precursor Gases During
2015 in an Urban Area of Beijing
Authors:Ding, Meng-Meng (1); Zhou, Jian-Nan (1); Liu, Bao-Xian (1); Wang, Yan (1); Zhang,
Bo-Tao (1); Shi, Ai-Jun (1); Yang, Dong-Yan (1); Chang, Miao (1)
Author affiliation:(1) Beijing Key Laboratory of Airborne Particulate Matter Monitoring
Technology, Beijing Municipal Environmental Monitoring Center, Beijing; 100048, China
Corresponding author:Liu, Bao-Xian(liubaoxian28@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1307-1316
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Simultaneous measurements of precursor gases
NH<inf>3</inf>,NO,NO<inf>2</inf>,SO<inf>2</inf>and the main water-soluble ions in
PM<inf>2.5</inf>such as sulphate (SO<inf>4</inf><sup>2-</sup>),nitrate
(NO<inf>3</inf><sup>-</sup>) and ammonium (NH<inf>4</inf><sup>+</sup>) (collectively
called SNA)were carried out in the urban area of Beijing during 2015-01 to 2015-12,which
obtained 325 groups of samples. PTFE membrane filters were used to collect particulate
NH<inf>4</inf><sup>+</sup>, NO<inf>3</inf><sup>-</sup>and SO<inf>4</inf><sup>2-</sup>,
followed by the online instruments to collect precursor gases. The pollution
characteristics of the precursor gases and SNA were analyzed and their correlation was
studied. The mean concentrations of NH<inf>3</inf>, NO, NO<inf>2</inf>, SO<inf>2</inf>,
NH<inf>4</inf><sup>+</sup>,NO<inf>3</inf><sup>-</sup>and SO<inf>4</inf><sup>2-</sup>were
21.5, 17.7, 54.3, 14.2, 8.1, 13.5 and 12.7 μg·m<sup>-3</sup>respectively during
the period of monitoring, and SNA accounted for 43.4% of PM<inf>2.5</inf>. The
concentrations of SO<inf>2</inf>,NO<inf>x</inf>and SNA declined compared to 2014. The
concentrations of NO,NO<inf>2</inf>and SO<inf>2</inf>were highest in winter and lowest in
summer. The concentration of NH<inf>3</inf>was higher in summer and lower in autumn; The
concentration and the percentage of NH<inf>4</inf><sup>+</sup>were stable during the four
seasons,both the concentrations and the percentage of NO<inf>3</inf><sup>-</sup>were
lowest in summer. The concentrations of SO<inf>4</inf><sup>2-</sup>was highest in winter
and the percentage was lowest in summer. The ratio of ([NO<inf>3</inf><sup>-</sup>]+2
[SO<inf>4</inf><sup>2-</sup>]) and NH<inf>4</inf><sup>+</sup>was 0.97 during the whole
year, showing that anions mainly existed in the form of NO<inf>3</inf><sup>-</sup>and
SO<inf>4</inf><sup>2-</sup>. In summer, the ratio of [NO<inf>3</inf><sup>-</sup>]+2
[SO<inf>4</inf><sup>2-</sup>] and [NH<inf>4</inf><sup>+</sup>] was slightly higher than
1.0, which was the reason why NO<inf>3</inf><sup>-</sup>was bound to Ca<sup>2+</sup>,
Mg<sup>2+</sup>and Na<sup>+</sup>besides NH<inf>4</inf><sup>+</sup>. With the increase of
pollution, the mass concentration of precursor gases and SNA increased dramatically,
among which NO<inf>x</inf>increased most rapidly, and SO<inf>2</inf>decreased from severe
pollution to serious pollution. The contribution rate of NH<inf>4</inf><sup>+</sup>was
maintained at a relatively stable level. SO<inf>4</inf><sup>2-</sup>had a higher
contribution when the pollution level was lower, whereas the concentration of
NO<inf>3</inf><sup>-</sup>was higher than others and contributed most to
PM<inf>2.5</inf>in heavy pollution. Heterogeneous transformation on the surface of
particulate matter played a more important role in the formation of SO<inf>4</inf><sup>2
-</sup>and NO<inf>3</inf><sup>-</sup>. The correlations between NO<inf>3</inf><sup>-
</sup>, NO<inf>2</inf>and NO,NH<inf>4</inf><sup>+</sup>and
NH<inf>3</inf>,SO<inf>4</inf><sup>2-</sup>and SO<inf>2</inf>were significant at the
confidence level of 0.01. SO<inf>4</inf><sup>2-</sup>had negative correlation with
SO<inf>2</inf>, and NO<inf>3</inf><sup>-</sup>had positive correlation with
NO<inf>2</inf>. Compared with NH<inf>3</inf>, the NH<inf>4</inf><sup>+</sup>concentration
was more obviously affected by acid gases NO<inf>2</inf>, SO<inf>2</inf>. © 2017,
Science Press. All right reserved.
Number of references:37
Main heading:Gases
Controlled terms:Correlation methods - Nitrogen compounds - Nitrogen oxides - Pollution
Uncontrolled terms:Mass concentration - Mean concentrations - Negative correlation - On-
line instruments - Particulate Matter - Positive correlations - Simultaneous measurement
- Urban areas
Classification code:804.2 Inorganic Compounds - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 4.34e+01%
DOI:10.13227/j.hjkx.201607005
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 61>
Accession number:20172603860963
Title:Pollution Characteristics of PCDD/Fs in Ambient Air and Exposure Risk Assessment
Around a Municipal Solid Waste Incinerator in Beijing
Authors:Qi, Li (1); Ren, Yue (1); Liu, Ai-Min (1); Huang, Ye-Ru (1); Zhao, Zhen (2);
Wang, Jiang (2); Li, Hong (2)
Author affiliation:(1) State Environmental Protection Key Laboratory of Dioxin Pollution
Control, National Research Center for Environmental Analysis and Measurement, Beijing;
100029, China; (2) Beijing Chaoyang District Environmental Protection Monitoring Station,
Beijing; 100125, China
Corresponding author:Huang, Ye-Ru(yrhuang@cneac.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1317-1326
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Ambient air was sampled and analyzed around a municipal solid waste incinerator
(MSWI) in Beijing from April 2014 to January 2015 to investigate the concentrations,
profiles and seasonal variations of PCDD/Fs in the region using HRGC-HRMS technique. The
mass concentrations and TEQ of 2,3,7,8-substituted PCDD/Fs in the air samples ranged from
8.9 to 140 pg·m<sup>-3</sup>and from 0.11 to 1.8 pg·m<sup>-3</sup>,
respectively. The concentration values at 4 sampling sites in haze day in autumn and all
7 sampling sites in winter were higher than the ambient air standard of 0.6
pg·m<sup>-3</sup>for dioxins regulated in Japan. 1,2,3,4,6,7,8-HpCDF and OCDD
dominated PCDD/Fs in all the samples for all four seasons with average contribution
fractions of 20.5% and 14.0%, respectively, while 2,3,4,7,8-PeCDF was the dominant
congener contributing to TEQ (43.3%). The spatial distribution basically exhibited a
trend that the concentrations at all sites were comparable and not related to the
distances from the source. Seasonal variation showed obviously higher concentration in
winter than the other three seasons, which may attribute to the high concentration of
ambient particulate matter due to domestic heating and worse atmospheric dispersion that
occurred in winter. The homologue and congener profiles of PCDD/Fs in the air samples
differed from those of the flue gas emission from the MSWI, consistent with the principle
component analysis results. Dioxin inhalation exposure dose estimation showed that the
dioxin inhalation exposure risk of residents living in the studied area was at a
relatively safe level [0.060-0.224 pg·(kg·d)<sup>-1</sup>]. However, the
dioxin inhalation exposure risk in heavily polluted seasons still needs great concerns.
© 2017, Science Press. All right reserved.
Number of references:40
Main heading:Municipal solid waste
Controlled terms:Atmospheric movements - Organic pollutants - Principal component
analysis - Refuse incinerators - Risk assessment - Risk perception - Solid wastes - Waste
incineration
Uncontrolled terms:Ambient air - Inhalation exposure - Municipal solid waste incinerator
- PCDD/Fs - Principle component analysis - Seasonal variation
Classification code:443.1 Atmospheric Properties - 452 Municipal and Industrial Wastes;
Waste Treatment and Disposal - 452.4 Industrial Wastes Treatment and Disposal - 804.1
Organic Compounds - 914.1 Accidents and Accident Prevention - 922.2 Mathematical
Statistics
Numerical data indexing:Percentage 1.40e+01%, Percentage 2.05e+01%, Percentage 4.33e+01%
DOI:10.13227/j.hjkx.201608147
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 62>
Accession number:20172703864522
Title:Pollution Characteristics and Nitrification and Denitrification Potential of
Superficial Sediments from Streams in an Urban-Rural Fringe
Authors:Qin, Ru-Bin (1); Li, Ru-Zhong (1); Gao, Su-Di (2); Zhang, Rui-Gang (3)
Author affiliation:(1) School of Resources and Environmental Engineering, Hefei
University of Technology, Hefei; 230009, China; (2) Collage of Civil and Environmental
Engineering, Anhui Xinhua University, Hefei; 230088, China; (3) School of Civil
Engineering, Hefei University of Technology, Hefei; 230009, China
Corresponding author:Li, Ru-Zhong(Lrz1970@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:936-945
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:From May 2015 to June 2016, seasonal sediment samples were collected from three
headwater streams in the urban-rural fringe of Hefei, Chaohu Lake basin, China. The
nitrogen pollution characteristics of sediments were preliminarily investigated for the
three streams. Three metrics, that is, potential nitrification rate (PNR), areal
nitrification rate (ANR) and rate of denitrification were quantitatively determined, and
their spatial and temporal variations were discussed subsequently. Moreover, the
relationship between PNR, ANR or denitrification rate and a list of environmental factors
was discriminated by using partial least-squares regression analysis. Results showed
that: (1) Guanzhenhe Distributary was the most polluted stream with a mean content of
4516.39 mg·kg<sup>-1</sup>for TN, which was 2.56 and 1.36 times higher than those
of Modian Stream and Taochong Stream, respectively. Similarly, the highest values for
NH<inf>4</inf><sup>+</sup>-N and NO<inf>3</inf><sup>-</sup>-N emerged in Guanzhenhe
Distributary while the lowest existed in Modian Stream. (2) There were distinct seasonal
variations in PNR and ANR, namely, the maximum values emerged in summer, minimum in
winter, and almost equivalent in spring and autumn. And the arrangement in order for PNR
and ANR was Taochong Stream>Modian Stream>Guanzhenhe Distributary. (3) The mean
rate of denitrification in Guanzhenhe Distributary was 10.59 mg·(kg·h)
<sup>-1</sup>, which was 3.16 and 1.75 times higher than those in Modian Stream and
Taochong Stream, respectively. In addition, both denitrification rate and denitrification
activity in summer were higher than those in spring for the three streams. (4) According
to the variable importance plot (F<inf>VIP</inf>), ANR, PNR and rate of denitrification
were almost all significantly correlated with such physical and chemical factors as pH,
OM, NH<inf>4</inf><sup>+</sup>-N, NO<inf>3</inf><sup>-</sup>-N, TN and TP in sediments
for the three streams. © 2017, Science Press. All right reserved.
Number of references:32
Main heading:River pollution
Controlled terms:Denitrification - Nitrification - Nitrogen - Pollution - Regression
analysis - Rural areas - Sediments
Uncontrolled terms:Nitrification and denitrification - Nitrification rates - Nitrogen
pollution - Partial least squares regression analysis - Potential nitrification - Spatial
and temporal variation - Superficial sediments - Urban-rural fringes
Classification code:453 Water Pollution - 483 Soil Mechanics and Foundations - 802.2
Chemical Reactions - 804 Chemical Products Generally - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201609096
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 63>
Accession number:20172703864559
Title:Response of Soil Nitrifier and Denitrifier Community and Activity to Elevated
Atmospheric CO<inf>2</inf>Concentration and Temperature
Authors:Liu, Yuan (1); Wang, Guang-Li (1); Li, Lian-Qing (2); Pan, Gen-Xing (2)
Author affiliation:(1) College of Life Science, Huaibei Normal University, Huaibei;
235000, China; (2) College of Resources and Environmental Sciences, Nanjing Agricultural
University, Nanjing; 210095, China
Corresponding author:Wang, Guang-Li(wanf-3344@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1245-1252
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Elevated atmospheric CO<inf>2</inf>concentration and temperature may affect
nitrifiers and denitrifiers which are related to soil N turnover. A climate change
experiment was conducted in the rice-wheat rotation ecosystem. This study was used to
investigate effects of elevated CO<inf>2</inf>and temperature on soil microbial community
structure, as well as abundance and activity of nitrifiers and denitrifiers. The results
showed that no change in the abundance of ammonia-oxidizing bacteria (AOB) and
denitrifier was observed at the tillering stage, however at the later stages, elevated
CO<inf>2</inf>alone significantly increased the abundance of ammonia-oxidizing archaea
(AOA) and denitrifier but there were no changes under CW treatment. The analysis of T-
RFLP profiles showed that elevated CO<inf>2</inf>and temperature had no obvious effect on
community structure of AOA, AOB or denitrifier, but altered diversity index (H') of AOA
and denitrifier. Moreover, elevated CO<inf>2</inf>alone significantly increased
nitrifying rate at the ripening stage. Elevated CO<inf>2</inf>and temperature did not
result in significant change in denitrifying rate at each single stage. These results
suggested that effects of elevated CO<inf>2</inf>and temperature on microbial community
were different among the tillering, heading and ripening stages, and functional
microorganism responded differently to multiple climate change treatments. © 2017,
Science Press. All right reserved.
Number of references:28
Main heading:Atmospheric temperature
Controlled terms:Ammonia - Bacteria - Carbon dioxide - Climate change - Denitrification -
Microorganisms - Nitrification - Social sciences - Soils
Uncontrolled terms:Ammonia oxidizing bacteria - Ammonia-oxidizing archaea - Atmospheric
CO - Elevated temperature - Winter wheat
Classification code:443.1 Atmospheric Properties - 461.9 Biology - 483.1 Soils and
Soil Mechanics - 802.2 Chemical Reactions - 804.2 Inorganic Compounds - 971 Social
Sciences
DOI:10.13227/j.hjkx.201608139
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 64>
Accession number:20172703864552
Title:Pollution Characteristics of Chlorobenzenes in Organs of Fish from Typical Epidemic
Areas of Schistosomiasis Prevalence
Authors:Li, Kun (1); Zhao, Gao-Feng (1); Zhou, Huai-Dong (1); Zhang, Pan-Wei (1); Liu,
Qiao-Na (1); Zhao, Xiao-Hui (1); Li, Dong-Jiao (1); Ren, Min (1); Zhao, Dan-Dan (1)
Author affiliation:(1) China Institute of Water Resources and Hydro-power Research,
Beijing; 100038, China
Corresponding author:Zhao, Gao-Feng(zhaogf@iwhr.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1182-1188
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Sixty-eight fish samples were collected from typical epidemic areas of
schistosomiasis prevalence. The contents of 12 CB congeners in fish samples were measured
using GC/MS technique. The results indicated that 1,3-DIC, 1,4-DIC, 1,2-DIC and HCB were
the most predominant CB congeners in the samples from the studying area. The source of
HCB was PCP (pentachlorophenol), which was used to control the schistosomiasis
prevalence, used in study area. And DIC came from the degradation of HCB and the articles
of daily use. The geometric average of CBs in muscle ranged from 2731.50 to 7811.23
ng·g<sup>-1</sup>lipid weight, while the summarized concentration of CBs in fish
gonads, brains, kidneys, livers ranged from 2557.89 to 4640.05 ng·g<sup>-
1</sup>lipid weight, 2423.18 to 3329.61 ng·g<sup>-1</sup>lipid weight, 1628.05 to
4667.76 ng·g<sup>-1</sup>lipid weight and 704.92 to 1086.96 ng·g<sup>-
1</sup>lipid weight, respectively. When compared to other studies in China and other
countries, the concentrations of CBs in these fish samples were at a relatively high
level. © 2017, Science Press. All right reserved.
Number of references:22
Main heading:Fish
Controlled terms:Electric circuit breakers - Epidemiology - Pollution
Uncontrolled terms:Daily use - Epidemic areas of schistosomiasis prevalence - Fish
samples - Source - Study areas
Classification code:461.7 Health Care
DOI:10.13227/j.hjkx.201609094
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 65>
Accession number:20172703864514
Title:Assessment of PM<inf>2.5</inf>Pollution Mitigation due to Emission Reduction from
Main Emission Sources in the Bejing-Tianjin-Hebei Region
Authors:Wu, Wen-Jing (1); Chang, Xing (1); Xing, Jia (1); Wang, Shu-Xiao (1, 2); Hao,
Ji-Ming (1, 2)
Author affiliation:(1) State Key Joint Laboratory of Environment Simulation and Pollution
Control, School of Environment, Tsinghua University, Beijing; 100084, China; (2) State
Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex,
Beijing; 100084, China
Corresponding author:Wang, Shu-Xiao(shxwang@tsinghua.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:867-875
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study chose two months (January and July) in 2012 which represent winter
and summer respectively, to assess the effects of fine particle (PM<inf>2.5</inf>)
pollution elimination due to emission control from different sectors in the Bejing-
Tianjin-Hebei region by using CMAQ/2D-VBS modeling system. The results showed that,
industrial emissions contributed most to PM<inf>2.5</inf>pollution in the Beijing-
Tianjin-Hebei region, followed by domestic emissions, while the contribution of per ton
emission reduced for industrial sectors subject to domestic sectors. The total
contribution and contribution of per ton emission reduced for transportation and power
plant were both at low level. Among industrial sectors, the iron, steel and metallurgical
industry was the greatest contributor, followed by cement industry, industrial boiler,
coking industry, lime and bricks industry and chemical industry. It was found that the
contribution of each emission source had significant association with its primary
PM<inf>2.5</inf>emission level. The control of NO<inf>x</inf>emissions would promote the
formation of PM<inf>2.5</inf>, and atmospheric vertical diffusion effect was weak during
wintertime in the Beijing-Tianjin-Hebei region. As a result, emission control of various
sectors was universally more effective for PM<inf>2.5</inf>pollution mitigation in summer
than in winter. Emission control in summer was significantly more effective for
transportation, powerplant, cement industry, industrial boiler and lime and bricks
industry. Due to considerable emissions in heating season, domestic emissions showed more
contribution in winter. Agricultural sources showed greater contribution per emission
reduction in winter by the reason of substantial emissions from straw open burning during
this time. With respect to a certain reduction ratio of emission, future control
strategies should pay more attention to industrial emissions, especially to the primary
PM<inf>2.5</inf>emissions. In details, priorities should be given to NO<inf>x</inf>and
SO<inf>2</inf>emission control for iron, steel and metallurgical industry,
NO<inf>x</inf>emission control for cement industry and SO<inf>2</inf>and NMVOC emission
control for coking industry. Besides, domestic emission control should also be taken into
consideration, and it will be more effective in winter. © 2017, Science Press. All
right reserved.
Number of references:38
Main heading:Industrial emissions
Controlled terms:Boiler control - Boilers - Brick - Cement industry - Cements - Chemical
industry - Emission control - Gas emissions - Iron and steel industry - Lime -
Metallurgy - Nitrogen oxides - Pollution - Pollution control
Uncontrolled terms:Agricultural sources - Beijing-tianjin-hebei regions - CMAQ/2D-VBS -
Control strategies - Emission reduction - Emissions reduction - Industrial boilers -
Metallurgical industry
Classification code:412.1 Cement - 414.2 Brick Materials - 451.1 Air Pollution Sources
- 451.2 Air Pollution Control - 531.1 Metallurgy - 545 Iron and Steel - 614 Steam
Power Plants - 614.1 Steam Power Plant Design and Construction - 804.2 Inorganic
Compounds - 805 Chemical Engineering, General
DOI:10.13227/j.hjkx.201607191
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 66>
Accession number:20172703864536
Title:Oxidation Destruction of Cu(CN)<inf>3</inf><sup>2-</sup>by Persulfate
Authors:Wang, Yun-Fei (1, 2); Li, Yi-Bing (1); Wang, Yan-Bin (2); Qi, Fan-Jing (1); Zhao,
Kai (1); Tian, Shi-Chao (1); Guo, Tao (2); Guan, Wei (2); Zhao, Xu (2)
Author affiliation:(1) School of Civil and Transportation, Hebei University of
Technology, Tianjin; 300401, China; (2) State Key Laboratory of Environmental Aquatic
Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences,
Beijing; 100085, China
Corresponding author:Zhao, Xu(zhaoxu@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1061-1066
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In recent years, cyanide contamination problem is becoming more and more
serious. Cyanides widely occur in the wastewater from metallurgical industry and
electroplating industry. The efficiency for cyanides removal of conventional physical and
chemical methods is not very satisfactory. Therefore, it is urgent to develop highly
efficient and environmental friendly methods for the removal of cyanides. As an
environmental-friendly oxidant, potassium persulfate is widely used in the treatment of
organic pollutants. The destruction of Cu(CN)<inf>3</inf><sup>2-</sup>was investigated by
homogeneous K<inf>2</inf>S<inf>2</inf>O<inf>8</inf>under alkaline conditions, and the
reaction mechanism was analyzed. The effects of the amount of
K<inf>2</inf>S<inf>2</inf>O<inf>8</inf>and the ratio of Cu<sup>+</sup>/CN<sup>-</sup>on
the degradation of CN<sup>-</sup>were studied. With the increase of
K<inf>2</inf>S<inf>2</inf>O<inf>8</inf>dose, the rate of CN<sup>-</sup>oxidation was
accelerated. The removal efficiency of CN<sup>-</sup>reached 89.6% after 60 min of
reaction in the presence of 2 mmol·L<sup>-
1</sup>K<inf>2</inf>S<inf>2</inf>O<inf>8</inf>. Oxidation of CN<sup>-</sup>was
accelerated with Cu<sup>+</sup>/CN<sup>-</sup>increasing from 2.0 to 5.0. Cu<sup>
+</sup>was oxidized to Cu<sup>2+</sup>and copper oxide was formed during the reaction.
The reactive radicals were analyzed using electron spin resonance and radical quenching
experiments, and the results indicated that both radicals oxidation pathway and non-
radical oxidation pathway were responsible for the removal of Cu(CN)<inf>3</inf><sup>2-
</sup>by K<inf>2</inf>S<inf>2</inf>O<inf>8</inf>. © 2017, Science Press. All right
reserved.
Number of references:27
Main heading:Copper compounds
Controlled terms:Alkalinity - Copper - Cyanides - Efficiency - Electroplating shops -
Magnetic moments - Metallurgy - Organic pollutants - Oxidation - Potassium
Uncontrolled terms:Copper complexes - Electroplating industry - Environmental friendly
methods - Environmental-friendly - Metallurgical industry - Potassium persulfate -
Radical oxidation - Sulfate radicals
Classification code:402.1 Industrial and Agricultural Buildings - 531.1 Metallurgy -
544.1 Copper - 549.1 Alkali Metals - 701.2 Magnetism: Basic Concepts and Phenomena -
801.1 Chemistry, General - 802.2 Chemical Reactions - 804.1 Organic Compounds - 804.2
Inorganic Compounds - 913.1 Production Engineering
Numerical data indexing:Percentage 8.96e+01%, Time 3.60e+03s
DOI:10.13227/j.hjkx.201608014
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 67>
Accession number:20172703864553
Title:Effect of Nano Zeolite on Growth, Activity of Antioxidant Enzyme, and Chemical
Fractions and Concentration of Cd in Chinese Cabbage
Authors:Qin, Yu-Li (1); Xiong, Shi-Juan (1); Xu, Wei-Hong (1); Zhao, Wan-Yi (1); Wang,
Wei-Zhong (1); Chen, Yong-Qin (1); Chi, Sun-Lin (1); Chen, Xu-Gen (1); Zhang, Jin-Zhong
(1); Xiong, Zhi-Ting (2); Wang, Zheng-Yin (1); Xie, De-Ti (1)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) College of Resources and Environmental Sciences, Wuhan
University, Wuhan; 430079, China
Corresponding author:Xu, Wei-Hong(xuwei_hong@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1189-1200
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Pot experiment was carried out to investigate the influence of nano zeolite (NZ)
and ordinary zeolite (OZ) on the growth, activities of antioxidant enzyme, Cd fraction
and Cd concentration in two varieties of Chinese cabbage. The results showed that the
activities of SOD, CAT and POD in the shoot and root of two varieties increased, and the
dry weight of shoot and the total dry weight of Chinese cabbage increased by 4.5%-96.5%
and 3.4%-88.4%, respectively. The application of zeolite effectively reduced the Cd
concentration of shoot and root in the two varieties of Chinese cabbage, and the
reduction range increased with the increase of the application amount of zeolite. Under
the low Cd condition (1 mg·kg<sup>-1</sup>Cd), the Cd concentration of edible
parts (shoots) in SD4 variety and XJC3 variety decreased by 1.0%-75.0% and 19.5%-68.9%
(except the Cd<inf>1</inf>+OZ<inf>5</inf>/OZ<inf>10</inf>processing), respectively. Under
the high Cd condition (5 mg·kg<sup>-1</sup>Cd), the Cd concentration of the edible
parts (shoots) in SD4 variety and XJC3 variety decreased by 7.2%-53.2% (except
Cd<inf>5</inf>+OZ<inf>10</inf>processing) and 0.7%-63.0%, respectively. The Cd
concentrations of the edible parts (shoots) in tow varieties of Chinese cabbage in the
nano zeolite treatments decreased by 10.5%-65.7% compared with the ordinary zeolite
treatments. In Cd contaminated soils (1 mg·kg<sup>-1</sup>and 5
mg·kg<sup>-1</sup>Cd),) the total extraction amount of Cd in the edible parts
(shoots) of SD4 variety reduced by 12.4%-68.8% and 13.2%-55.6% (except of Cd<inf>5</inf>
+OZ<inf>5</inf>processing), and the total extraction amount of Cd in the edible parts
(shoots) of XJC3 variety reduced by 9.4%-71.5% and 3.1%-38.7% (except of Cd<inf>1</inf>
+OZ<inf>5</inf>processing), respectively. The application amount of nano zeolite (NZ) and
ordinary zeolite (OZ) was more, the reduction range of the total extraction amount of Cd
in the edible parts (shoots) of two varieties of Chinese cabbage was greater. ©
2017, Science Press. All right reserved.
Number of references:27
Main heading:Pollution
Controlled terms:Antioxidants - Cadmium - Enzyme activity - Enzymes - Extraction - Soil
pollution - Zeolites
Uncontrolled terms:Antioxidant enzyme - Cd concentrations - Cd-contaminated soils -
Chemical fractions - Chinese cabbage - Dry weight - Pot experiment
Classification code:461.9 Biology - 483.1 Soils and Soil Mechanics - 549.3 Nonferrous
Metals and Alloys excluding Alkali and Alkaline Earth Metals - 802.3 Chemical Operations
- 804.2 Inorganic Compounds
Numerical data indexing:Percentage 1.00e+00% to 7.50e+01%, Percentage 1.05e+01% to 6.57e
+01%, Percentage 1.24e+01% to 6.88e+01%, Percentage 1.32e+01% to 5.56e+01%, Percentage
1.95e+01% to 6.89e+01%, Percentage 3.10e+00% to 3.87e+01%, Percentage 3.40e+00% to 8.84e
+01%, Percentage 4.50e+00% to 9.65e+01%, Percentage 7.00e-01% to 6.30e+01%, Percentage
7.20e+00% to 5.32e+01%, Percentage 9.40e+00% to 7.15e+01%
DOI:10.13227/j.hjkx.201608110
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 68>
Accession number:20172703864520
Title:Removal of Volatile Sulfur Odor by the Biotrickling Filter
Authors:Ye, Jie-Xu (1); Miao, Xiao-Ping (2); Zhuge, Lei (1); Zhao, Xiang-Yu (1); Jiang,
Ning-Xin (1); Zhang, Jing-Xiao (3); Chen, Dong-Zhi (1); Chen, Jian-Meng (1)
Author affiliation:(1) College of Environment, Zhejiang University of Technology,
Hangzhou; 310014, China; (2) Environmental Science Research & Design Institute of
Zhejiang Province, Hangzhou; 310007, China; (3) Environmental Protection Bureau of Yuhuan
County in Taizhou City, Yuhuan; 317600, China
Corresponding author:Chen, Dong-Zhi(cdz@zjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:918-923
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The biodegradation of gas-phase mixtrue of dimethyl sulfide (DMS) and 1-
propanethiol (PT) was examined in a biotrickling filter (BTF), inoculated with a
microbial consortium composed of activated sewage sludge, and pure strains of Alcaligenes
sp. SY1 and Pseudomonas putida. S-1. BTF could be successfully started up within only 11
days when the inlet concentrations of DMS and PT were both 50 mg·m<sup>-3</sup>and
EBRT was 30 s, with 90% removal efficiency (RE) of DMS and 100% RE of PT. In the steady
state, the maximum elimination capacities of DMS and PT were 8.7 g·
(m<sup>3</sup>·h)<sup>-1</sup>and 12.4 g·(m<sup>3</sup>·h)<sup>-
1</sup>, respectively. The presence of PT with a concentration up to 51
mg·m<sup>-3</sup>showed an antagonistic removal pattern for DMS, but the opposite
did not occur. Meanwhile, the BTF showed high efficiency in the biodegradation of
H<inf>2</inf>S. When the concentration of H<inf>2</inf>S was as high as 230
mg·m<sup>-3</sup>, the RE of H<inf>2</inf>S could reach 98%. However,
H<inf>2</inf>S showed a declining effect on the removal of DMS when the concentration
exceeded 115 mg·m<sup>-3</sup>. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Biofilters
Controlled terms:Bacteria - Bandpass filters - Biodegradation - Efficiency - Filtration -
Odor removal - Sewage sludge
Uncontrolled terms:1-propanethiol - Biotrickling filters - Dimethyl sulfide -
H<inf>2</inf>S - Mixed wastes
Classification code:452.2 Sewage Treatment - 461.8 Biotechnology - 703.2 Electric
Filters - 802.3 Chemical Operations - 913.1 Production Engineering
Numerical data indexing:Age 3.01e-02yr, Percentage 9.00e+01%, Percentage 9.80e+01%
DOI:10.13227/j.hjkx.201603055
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 69>
Accession number:20171003416426
Title:Mechanism of soil eco-functional stability under pyrene/cadmium simplex and
combined pollution stress
Authors:Chen, Xin-Yao (1); Yang, Hui-Zi (1); Li, Min (2); Niu, Xiao-Cong (1); Su, Yu-Xuan
(1); Zhang, Yuan (1)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Nanjing Institute of Geography
& Limnology, Chinese Acadamy of Sciences, Nanjing; 210008, China
Corresponding author:Zhang, Yuan(yuanzhang_1001@mail.usts.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:352-360
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In current scenario, the soil pollution has become very severe and its effects
on agricultural and ecological security issues cannot be ignored as various contaminants
are discharged into soil. Thus, the soil pollution is exigent and has to be solved. This
research took soil resistance(Rt), resilience (Rl) and stability (Sb) as evaluation
indexes for judging soil quality by exerting different concentration (concentration
ratio) gradient of pyrene (PYR), cadmium (Cd) and pyrene/cadmium (PYR/Cd) combined
pollutants. A sympathetic description was showed from the aspects of microbial activity,
diversity and abundance of soil ecosystem,and the models were constructed to describe the
dose-response relationship between PYR-Sb and Cd-Rt. The research showed that different
types of pollutants had certain inhibition on soil DOC content. In Cd and PYR simplex
pollution, soil microbial mean biomass and colony number decreased with increasing
concentration of pollutants. In PYR/Cd combined pollution, the ratio of PYR and Cd had a
negative correlation with the decreasing rate of DOC and resistance, meanwhile Cd had a
prominent influence on the above-mentioned correlations, in other words, the soil with
higher concentration of Cd had lower DOC decrease rate and resistance, and Cd would have
dominant inhibition effect on microorganisms under PYR/Cd combined pollution. In
addition, this study found the significant correlation of c<inf>PYR</inf>-Sb and
c<inf>Cd</inf>-Rt, and built the binomial forecasting model to describe the dose-response
relationship of c<inf>PYR</inf>-Sb and c<inf>Cd</inf>-Rt. © 2017, Science Press. All
right reserved.
Number of references:25
Main heading:Soil pollution
Controlled terms:Antimony - Cadmium - Ecology - Microorganisms - Pollution - Pyrene -
Soils
Uncontrolled terms:Dose response - Dose response relationships - Ecological security -
Forecasting modeling - Microbial activities - Negative correlation - Soil microbes - Soil
stability
Classification code:454.3 Ecology and Ecosystems - 461.9 Biology - 483.1 Soils and
Soil Mechanics - 546.4 Antimony and Alloys - 549.3 Nonferrous Metals and Alloys
excluding Alkali and Alkaline Earth Metals - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201604157
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 70>
Accession number:20171003409528
Title:Variation characteristics and health risk assessment of BTEX in the atmosphere of
northern suburb of Nanjing
Authors:Zhang, Yu-Xin (1); An, Jun-Lin (1); Wang, Jian-Yu (1); Wang, Jun-Xiu (1); Shi,
Yuan-Zhe (1); Liu, Jing-Da (1); Liang, Jing-Shu (1)
Author affiliation:(1) Key Laboratory for Aerosol-Cloud-Precipitation of China
Meteorological Administration, Collaborative Innovation Center on Forecast and Evaluation
of Meteorological Disasters, Nanjing University of Information Science & Technology,
Nanjing; 210044, China
Corresponding author:An, Jun-Lin(junlinan@nuist.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:453-460
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:BTEX concentrations were determined by GC5000 online gas chromatography in the
atmosphere of the north suburb of Nanjing in March 2013 to February 2014, using the EPA
human exposure analysis evaluation method for benzene series compounds of volatile
organic compounds (VOCs) in health risk assessment. The results showed that the total
amount of BTEX showed the variation characteristics of
spring>winter>autumn>summer. BTEX concentration was higher in the periods of
07:00-10:00 and 17:00-20:00, and the lowest was detected between 13:00-15:00; At the
weekend, the concentration of BTEX was higher than on the working day. The sources of
BTEX included traffic sources, industrial sources and solvent evaporation. The HQ of BTEX
in all four seasons showed the order of benzene>xylene>ethylbenzene>toluene, and
the HQ risk values were within the safety range in all analysis periods. The distribution
of R value was winter>autumn>spring>summer, and R was higher than the safety
threshold for all the analyses, indicating the existence of carcinogenic risk. ©
2017, Science Press. All right reserved.
Number of references:30
Main heading:Risk assessment
Controlled terms:Benzene - Gas chromatography - Health - Health risks - Safety
engineering - Volatile organic compounds
Uncontrolled terms:BTEX - Carcinogenic risk - Hazard quotients - Industrial sources -
Nanjing - Online gas chromatography - Solvent evaporation - Variation characteristics
Classification code:461.6 Medicine and Pharmacology - 461.7 Health Care - 802.3
Chemical Operations - 804.1 Organic Compounds - 914 Safety Engineering - 914.1
Accidents and Accident Prevention
DOI:10.13227/j.hjkx.201607108
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 71>
Accession number:20171003416398
Title:Seasonal succession characteristics of the Morphologically-based Functional Groups
(MBFG) in deep-water reservoir
Authors:Yang, Yu (1, 2); Lu, Jin-Suo (1, 2); Zhang, Ying (1, 2)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture & Technology, Xi'an; 710055, China; (2) State Key
Laboratory Breeding Base of West Building Technology, Xi'an; 710055, China
Corresponding author:Lu, Jin-Suo(lujinsuo@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:121-128
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Morphologically-based functional groups (MBFG) is the basis for a simple way of
distinguishing the phytoplankon to cluster species according to their similar
morphological traits observed by optical microscope. In order to understand the
application of morphologically-based functional groups (MBFG) in the research on
phytoplankton community structure and variation of deep-water reservoir, as well as the
succession characteristics of algae, the Jinpen Reservoir was studied from August 2011 to
July 2013. Using morphologically-based functional groups (MBFG), the phytoplankton
communities found in the reservoir were classified to functional groups, and the
relations between the morphologically-based functional groups succession and environment
cases were explored with redundancy analysis (RDA) method. The results suggested that
five morphologically-based functional groups were found in the reservoir, namely
II,IV,V,VI,VII; The succession of reservoir algal functional groups had seasonal
characteristics, a variety of Morphologically-based functional groups coexisted in spring
and summer,while reservoir algal functional groups were relatively simple in autumn and
winter; meanwhile, the density of each morphologically-based functional group decreased
with the increase of water depth among the environmental factors, morphologically-based
functional groups IV and VI were respectively affected by temperature; the other water
layers of the reservoir morphologically-based functional groups VI was significantly
affected by TN content. © 2017, Science Press. All right reserved.
Number of references:24
Main heading:Reservoirs (water)
Controlled terms:Phytoplankton
Uncontrolled terms:Deep water reservoirs - Environmental factors - Morphological traits -
Morphologically-based functional groups (MBFG) - Phytoplankton community - Redundancy
analysis (RDA) - Related relationship - Seasonal characteristics
Classification code:441.2 Reservoirs - 471 Marine Science and Oceanography
DOI:10.13227/j.hjkx.201603096
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 72>
Accession number:20171003408643
Title:Sorption of p-nitrophenol by biochars of corncob prepared at different pyrolysis
temperatures
Authors:Ma, Feng-Feng (1); Zhao, Bao-Wei (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Lanzhou
Jiaotong University, Lanzhou; 730070, China
Corresponding author:Zhao, Bao-Wei(zhbw2001@sina.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:837-844
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Sorption of p-nitrophenol (PNP) on biochars prepared from pyrolysis of corncob
in the temperature range of 200-600℃ (CC200-CC600) was investigated. Sorption
mechanisms were discussed. Pyrolysis temperature showed a pronounced effect on properties
of biochars. Decreases in molar H/C, O/C and (O+N)/C ratios were resulted from removal of
H- and O-containing functional groups with increasing pyrolysis temperature, and produced
biochars with low polarity and high aromaticity. The isotherms data were well described
by the Freundlich model. Batch sorption experiments showed that the PNP sorption was
strongly dependent on the properties of biochars. A linear relationship was observed
between sorption parameters (n and K<inf>F</inf>) and properties of biochars such as
molar elemental ratios [H/C, O/C, and (O+N)/C]. The sorption and partition fractions were
quantified by isotherm separation method. PNP sorption on biochar produced at 200℃
was linear due to partition on uncarbonized organic matter in biochar, while PNP sorption
on biochars produced at 300-600℃ was nonlinear and adsorption-dominant for all the
biochars via π-π electron donor-acceptor interaction and pore-filling. © 2017,
Science Press. All right reserved.
Number of references:24
Main heading:Sorption
Controlled terms:Isotherms - Phenols - Pyrolysis
Uncontrolled terms:Bio chars - Corncob - Electron donor acceptors - Linear relationships
- p-Nitrophenol - Pyrolysis temperature - Separation methods - Sorption mechanism
Classification code:802.2 Chemical Reactions - 802.3 Chemical Operations - 804.1
Organic Compounds
DOI:10.13227/j.hjkx.201608101
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 73>
Accession number:20171003409527
Title:Compositions and sources of summertime dicarboxylic acids and related SOA in
PM<inf>2.5</inf>from Mt. Taishan
Authors:Meng, Jing-Jing (1, 2); Hou, Zhan-Fang (1, 2); Liu, Xiao-Di (1); Xing, Ji-Zhao
(1)
Author affiliation:(1) School of Environment and Planning, Liaocheng University,
Liaocheng; 252000, China; (2) State Key Laboratory of Loess and Quaternary Geology,
Institute of Earth Environment, Chinese Academy of Sciences, Xi'an; 710061, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:445-452
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To identify the compositions and sources of dicarboxylic acids and related SOA
in Mt. Taishan, PM<inf>2.5</inf>samples were collected from July to August, 2004, and
analyzed for dicarboxylic acids and related compounds, the tracers of biogenic secondary
organic aerosol (SOA) (Isopene, α-/β-Pinene and β-caryophyllene SOA
tracers), water-soluble organic carbon (WSOC) and inorganic ions. The results showed that
total dicarboxylic acids were (376±189) ng·m<sup>-3</sup>, and
C<inf>2</inf>was the most abundant dicarboxylic acid, followed by C<inf>3</inf>,
C<inf>4</inf>and C<inf>9</inf>. The concentrations of diacids were more abundant than
those in marine regions, but lower than those in urban and other mountainous areas,
indicating that the atmosphere in Mt. Taishan was less influenced by anthropogenic
pollution. C<inf>2</inf>/C<inf>4</inf>, C<inf>3</inf>/C<inf>4</inf>and F/M ratios
indicated that diacids were mostly produced by more intensive photochemical oxidation.
The relative abundance of C<inf>9</inf>to the total diacids,
C<inf>9</inf>/C<inf>6</inf>and C<inf>9</inf>/Ph ratios were higher than those in urban,
marine and mountainous regions, further suggesting that SOA in Mt. Taishan atmosphere
were mostly derived from biogenic sources rather than anthropogenic sources. Compared to
the budgets of model and correlation analysis, it suggested that diacids and related SOA
in Mt. Taishan were mostly derived from photochemical oxidation of local biogenic
sources. © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Organic carbon
Controlled terms:Aerosols - Budget control - Carbon - Carbon inorganic compounds -
Elementary particle sources - Marine pollution
Uncontrolled terms:Anthropogenic pollution - Anthropogenic sources - Correlation analysis
- Dicarboxylic acid - Mt. Taishan - Photochemical oxidation - Secondary organic aerosols
- Water-soluble organic carbon
Classification code:453 Water Pollution - 804 Chemical Products Generally
DOI:10.13227/j.hjkx.201607199
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 74>
Accession number:20171003409562
Title:Effects of Rhodopseudomonas palustris PSB06 on pepper rhizosphere microbial
community structure
Authors:Luo, Lu-Yun (1, 2); Jin, De-Cai (3); Zuo, Hui (4); Zhang, Zhuo (2); Tan, Xin-Qiu
(2); Zhang, De-Yong (2); Lu, Xiang-Yang (1); Liu, Yong (2)
Author affiliation:(1) College of Bioscience & Biotechnology, Hunan Agricultural
University, Changsha; 410128, China; (2) Key Laboratory of Pest Management of
Horticultural Crop of Hunan Province, Institute of Hunan Plant Protection, Hunan Academy
of Agricultural Science, Changsha; 410125, China; (3) Chinese Academy of Sciences Key
Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental
Sciences, Chinese Academy of Sciences, Beijing; 100085, China; (4) Hunan Biological and
Electromechanical Polytechnic, Changsha; 410127, China
Corresponding author:Liu, Yong(haoasliu@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:735-742
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The use of biological pesticide can greatly reduce the soil pollution in the
environment. Exploring the effect of biological pesticide on community diversity and
distribution of pathogenic bacteria will provide theoretic basis for subsequent
researches on biological pesticide micro-ecological control. In order to explore the
microbial ecological mechanism of pepper phytophthora blight, this research compared the
difference of microbial diversity between rhizosphere soil of infected and healthy
plants, and the effects of Rhodopseudomonas palustris PSB06 on microbial diversities of
plant rhizosphere soil were investigated using Illumina MiSeq sequencing technology. The
results showed that there was less difference in the microbial diversity from the same
soil between the seventh day and the fourteenth day. The microbial diversity of
rhizosphere soil of healthy plants was higher than that of rhizosphere soil of infected
plants. The soil sprayed with Rhodopseudomonas palustris PSB06 exhibited the highest
diversity. Moreover, the abundance of Actinomycetes in the rhizosphere soil of healthy
plants was higher than that of infected plants, and the highest abundance of
Actinomycetes was observed in the soil sprayed with Rhodopseudomonas palustris PSB06. The
microbial diversity between rhizosphere soil of infected and healthy plants was
significantly different. Spraying Rhodopseudomonas palustris PSB06 could significantly
alter the microbial community structure of the soil. It could also increase the diversity
of microorganism and the abundance of Actinomycetes in the soil. © 2017, Science
Press. All right reserved.
Number of references:41
Main heading:Soils
Controlled terms:Bacteria - Ecology - Microorganisms - Pesticides - Social sciences -
Soil pollution
Uncontrolled terms:Ecological mechanisms - Microbial community structures - Microbial
diversity - Phytophthora blights - Rhodopseudomonas palustris
Classification code:454.3 Ecology and Ecosystems - 461.9 Biology - 483.1 Soils and
Soil Mechanics - 803 Chemical Agents and Basic Industrial Chemicals - 971 Social
Sciences
DOI:10.13227/j.hjkx.201606059
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 75>
Accession number:20171003409532
Title:Variation analysis of daily PM<inf>2.5</inf>concentrations based on boosted
regression tree: A case study in Changzhou
Authors:Ge, Yue (1); Wang, Ming-Xin (1); Sun, Xiang-Wu (1); Qi, Jin-Di (1)
Author affiliation:(1) College of Environmental & Safety Engineering, Changzhou
University, Changzhou; 213164, China
Corresponding author:Wang, Ming-Xin(wmxcau@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:485-494
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on hourly concentration data from six state-controlled air quality
monitoring stations in urban area of Changzhou from December 2014 to November 2015, the
seasonal variation of PM<inf>2.5</inf>pollution was analyzed, and the contributions of
PM<inf>10</inf>, four kinds of gaseous pollutants and seven meteorological factors to
daily changes of ρ(PM<inf>2.5</inf>) were quantified by boosted regression tree
(BRT). The results showed that: the seasonal differences of PM<inf>2.5</inf>pollution
were significant, the pollution was serious in winter and the pollution duration was
long, while the pollution was light in summer. The spatial distribution of ρ
(PM<inf>2.5</inf>) in four seasons was different, but the six monitoring stations showed
similar trends in each season. Daily average ρ(PM<inf>2.5</inf>) was simulated and
verified by BRT. The correlation coefficient of the training data was 0.981, and the
cross-validation correlation coefficient was 0.957. In addition, the mean deviation
between the simulated values and the measured values was 1.80%, and the standardized mean
error was 10.41%, which showed that the model fitted well. The contribution percentages
of four kinds of impact types (PM<inf>10</inf>, gaseous pollutants, meteorological
factors and regional transport and diffusion) to daily average ρ(PM<inf>2.5</inf>)
changes of four seasons were 23.4%, 28%, 36.2% and 12.6%, respectively. So, the most
significant affecting factor was meteorological condition, followed by secondary
formation, primary emission, and regional transport and diffusion. In the factors with
contribution percentages of more than 5%, the daily average ρ(PM<inf>2.5</inf>) was
positively associated with PM<inf>10</inf>, relative humidity, CO and O<inf>3</inf>, and
was negatively correlated with temperature, SO<inf>2</inf>and mixed layer high. In
addition, the daily average ρ(PM<inf>2.5</inf>) had complex relationships with
atmospheric pressure and NO<inf>2</inf>. For regional transport and diffusion, the
polluted air flow from southeast, west and north had a relatively great negative impact
on PM<inf>2.5</inf>pollution of urban area in Changzhou. © 2017, Science Press. All
right reserved.
Number of references:38
Main heading:Urban transportation
Controlled terms:Air quality - Atmospheric humidity - Atmospheric movements - Atmospheric
pressure - Diffusion - Fog - Forestry - Pollution - Quality control - Regression analysis
- Sulfur dioxide - Trees (mathematics) - Verification
Uncontrolled terms:Boosted regression trees - Changzhou - Contribution percentage -
Seasonal changes - Simulation
Classification code:432 Highway Transportation - 433 Railroad Transportation - 443.1
Atmospheric Properties - 451.2 Air Pollution Control - 721.1 Computer Theory, Includes
Formal Logic, Automata Theory, Switching Theory, Programming Theory - 804.2 Inorganic
Compounds - 913.3 Quality Assurance and Control - 921.4 Combinatorial Mathematics,
Includes Graph Theory, Set Theory - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 1.04e+01%, Percentage 1.26e+01%, Percentage 1.80e+00%,
Percentage 2.34e+01%, Percentage 2.80e+01%, Percentage 3.62e+01%, Percentage 5.00e+00%
DOI:10.13227/j.hjkx.201607067
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 76>
Accession number:20171003409553
Title:Operational performance and microbial community structure in a completely mixed
aeration system
Authors:Wang, Shuo (1, 2, 3); Xu, Qiao (1, 4); Zhang, Guang-Sheng (1, 2, 3); Li, Ji (1,
2, 3)
Author affiliation:(1) School of Environment and Civil Engineering, Jiangnan University,
Wuxi; 214122, China; (2) Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan
University, Wuxi; 214122, China; (3) Jiangsu College of Water Treatment Technology and
Material Collaborative Innovation Center, Suzhou; 215009, China; (4) Ningbo Municipal
Drainage Co., Ltd., Ningbo; 315000, China
Corresponding author:Li, Ji(liji@jiangnan.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:665-671
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A completely mixed aeration system was introduced in domestic sewage treatment,
and the simultaneous nitrification and denitrification process and microbial community
structure were further investigated. The pilot-scale experimental results showed that the
operation of the system was stable and the average chemical oxygen demand (COD),
NH<inf>4</inf><sup>+</sup>-N and total nitrogen (TN) removal were 93.2%, 96.9% and 75.2%,
respectively. The effluent COD, NH<inf>4</inf><sup>+</sup>-N and TN were better than the
standard of level A stipulated by Discharge Standard of Pollutants for Municipal
Wastewater Treatment Plant (GB 18918-2002) in the absence of external carbon source. The
sludge derived from the system showed a significant denitrification capacity and the
denitrification rate was 2.86 times higher than that in the wastewater treatment plant.
In addition, the existence of aerobic denitrifying bacteria in the system was confirmed
by the PCR amplification of genes encoding perplasmic nitrate reductases. The high-
throughput sequencing results revealed that Zoogloea, Thauera and Dechloromonas were
dominant in the completely mixed aeration system. © 2017, Science Press. All right
reserved.
Number of references:23
Main heading:Sewage aeration
Controlled terms:Aerobic bacteria - Bacteria - Carbon - Chemical oxygen demand -
Denitrification - Effluent treatment - Effluents - Microorganisms - Nitrates -
Nitrification - Nitrogen removal - Polymerase chain reaction - Sewage - Sewage pumping
plants - Sewage treatment - Social sciences - Throughput - Wastewater treatment - Water
treatment plants
Uncontrolled terms:Aeration system - Aerobic denitrification - High-throughput sequencing
- Microbial community structures - Municipal wastewater treatment plants - Nitrate
reductase - Simultaneous nitrification and denitrification - Wastewater treatment plants
Classification code:445.1 Water Treatment Techniques - 452 Municipal and Industrial
Wastes; Waste Treatment and Disposal - 461 Bioengineering and Biology - 461.9 Biology -
801.2 Biochemistry - 802.2 Chemical Reactions - 804 Chemical Products Generally -
804.2 Inorganic Compounds - 971 Social Sciences
Numerical data indexing:Percentage 7.52e+01%, Percentage 9.32e+01%, Percentage 9.69e+01%
DOI:10.13227/j.hjkx.201607094
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 77>
Accession number:20171003416390
Title:Diurnal variations of concentration of porewater dissolved CH<inf>4</inf>and
CO<inf>2</inf>in a brackish marsh dominated by cyperus malaccensis and phragmites
australis during neap and spring tidal days in the minjiang river estuary
Authors:Tan, Li-Shan (1); Yang, Ping (1, 2); He, Lu-Lu (1); Huang, Jia-Fang (1, 2, 3);
Hu, Zhi-Qiang (1); Tong, Chuan (1, 2, 3)
Author affiliation:(1) School of Geographical Sciences, Fujian Normal University, Fuzhou;
350007, China; (2) Key Laboratory of Humid Sub-tropical Eco-geographical Process of
Ministry of Education, Fuzhou; 350007, China; (3) Research Centre of Wetlands in
Subtropical Region, Fujian Normal University, Fuzhou; 350007, China
Corresponding author:Tong, Chuan(tongch@fjnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:52-59
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Understanding of diurnal variation of soil porewater dissolved CO<inf>2</inf>and
CH<inf>4</inf>concentration plays an important role in revealing carbon cycling in
estuarine wetlands. During neap and spring tidal days in April and September 2010, the
diurnal variations of soil porewater dissolved CO<inf>2</inf>and
CH<inf>4</inf>concentrations and main impacting factors in a brackish marsh ecosystem
dominated by two species of Cyperus malaccensis (brevifolius) and Phragmites australis
(common reed) were determined in the ShanYutan in the Min River estuary, southeast China.
The results showed that: ① the soil porewater dissolved CH<inf>4</inf>concentration
during the spring and neap tidal days in April and September ranged from 88.20 to 190.74,
53.42 to 141.24, 16.27 to 81.89 and 44.90 to 88.53 μmol·L<sup>-1</sup>,
respectively. The mean of dissolved CH<inf>4</inf>concentration was higher at nighttime
than at daytime during the spring and neap tidal days in April, but the mean of dissolved
CH<inf>4</inf>concentration was higher at daytime than at nighttime during the spring and
neap tidal tidal days in September. ② the soil porewater dissolved
CO<inf>2</inf>concentration during the spring and neap tidal days in September ranged
from 19.33 to 40.1 μmol·L<sup>-1</sup>and 9.69 to 29.96 μmol·L<sup>-
1</sup>, respectively, and the dissolved CO<inf>2</inf>concentration during daytime was
lower than that at night; ③ the mean of dissolved CO<inf>2</inf>concentration was
lower during the inundation period than in the exposed soil surface period, but the mean
of dissolved CH<inf>4</inf>concentration was higher during the inundation period than in
the exposed soil surface period. © 2017, Science Press. All right reserved.
Number of references:31
Main heading:Atmospheric composition
Controlled terms:Carbon dioxide - Dissolution - Estuaries - Floods - Soils - Wetlands
Uncontrolled terms:Dissolved carbon dioxide - Dissolved methane - Diurnal variation -
Estuarine wetlands - Neap and spring tide day - Pore waters
Classification code:407.2 Waterways - 483.1 Soils and Soil Mechanics - 801 Chemistry -
802.3 Chemical Operations - 804.2 Inorganic Compounds
Numerical data indexing:Molar_Concentration 1.93e-02mol/m3 to 4.01e-02mol/m3,
Molar_Concentration 4.49e-02mol/m3 to 8.85e-02mol/m3, Molar_Concentration 9.69e-03mol/m3
to 3.00e-02mol/m3
DOI:10.13227/j.hjkx.201606056
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 78>
Accession number:20172603860972
Title:Community Structure Characteristics of Eukaryotic Planktonic Algae in Liaohe River
Through High-throughput Sequencing
Authors:Wang, Jing-Qi (1, 2, 3); Wang, Shu-Ping (2, 3); Zhang, Yuan (2, 3); Lin, Jia-Ning
(2, 3); Gao, Xin (2, 3); Zang, Xiao-Miao (1, 2, 3); Zhao, Qian (2, 3)
Author affiliation:(1) College of the Environment, Liaoning University, Shenyang; 110036,
China; (2) State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese
Research Academy of Environmental Sciences, Beijing; 100012, China; (3) Laboratory of
Riverine Ecological Conservation & Technology, Chinese Research Academy of
Environmental Sciences, Beijing; 100012, China
Corresponding author:Zhang, Yuan(zhangyuan@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1403-1413
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Eukaryotic phytoplankton plays an important ecological function in river
ecosystem. The 18S rRNA gene V4 variable region of the environmental samples in Liaohe
river was sequenced by using 454 pyrosequencing technology. The reprehensive sequences of
OTUs were annotated, and then the OTUs list was compared to the species list obtained by
microscope observation. The phylogenetic tree was constructed based on the reprehensive
sequences of OTUs and 18S rRNA genes of eukaryotic phytoplankton algae obtained from
GenBank. The community structure characteristics of eukaryotic phytoplankton and its
environmental impact indicators were further studied. In this study, we got 167 901
high-quality sequences of 18S rRNA gene V4 region. These sequences were annotated to 424
OTUs, including 134 eukaryotic algae. The results of the high-throughput sequencing
showed that bacillariophyta and chlorophyta were the dominant groups of the total phyla.
The high-throughput sequencing also revealed the presence of Charophyta, Cryptophyta,
Haptophyta and Chrysophyceae which were not observed by optical microscope. The phylogeny
analysis clustered the Cryptophyta and Pyrroptata at phylum level. The different genera
of Cryptophyta and part of families or genera of Pyrroptata were clustered and
distinguished by phylogeny analysis. The results of RDA showed that NH<inf>4</inf><sup>
+</sup>-N, PO<inf>4</inf><sup>3</sup>-P and NO<inf>3</inf><sup>-</sup>were the most
important environmental factors that affected the community structure. This study
provided a new perspective to understand the diversity, community structure and influence
factors of eukaryotic phytoplankton in Liaohe river. The study also indicated that high-
throughput sequencing has great application potential in investigation of phytoplankton
and the water environment quality assessment in Liaohe river. © 2017, Science Press.
All right reserved.
Number of references:32
Main heading:Algae
Controlled terms:Biology - Ecology - Ecosystems - Environmental impact - Environmental
technology - Genes - Phytoplankton - Rivers - RNA - Social sciences - Throughput
Uncontrolled terms:18s rRNA - Community structures - Diversity - Ecological functions -
Environmental factors - Environmental sample - High-quality sequences - High-throughput
sequencing
Classification code:454 Environmental Engineering - 461.2 Biological Materials and
Tissue Engineering - 461.9 Biology - 971 Social Sciences
DOI:10.13227/j.hjkx.201609133
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 79>
Accession number:20172603860991
Title:Characteristics of Anaerobic Methane Removal Coupled to Fe(III) Reduction in Aged
Refuse
Authors:Wang, Li-Li (1, 2); He, Ting (1, 2); Long, Yan (1, 2); Liu, Chang-Bao (1, 2)
Author affiliation:(1) School of Environment, Jinan University, Guangzhou; 510632, China;
(2) Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong
Higher Education Institutes, Jinan University, Guangzhou; 510632, China
Corresponding author:Long, Yan(Tlongyan@jnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1558-1565
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Landfills are the third largest iron reservoir and one of the largest sources of
methane release. Iron, as a kind of transition metal, plays a particularly important role
in environmental biogeochemistry and is closely linked to the biogeochemical cycle of C,
S and N. The aged refuse could be utilized as bio-cover material to improve the removal
of contaminants. Therefore, this work investigated the effect of iron reduction on
anaerobic removal of methane, and the interactions of ferric iron with nitrate and
sulfate in the aged refuse. The columns were operated as landfill bio-covers and
recirculated leachate with addition of FeCl<inf>3</inf>solution. In the experiment, three
columns were used, two of them were used as controls (named as B1 and B3), B1 was fed
with leachate and CH<inf>4</inf>, whereas B3 was only recirculated with leachate adding
FeCl<inf>3</inf>. The treatment B2 was fed with the above two substrates. During the
operation of columns, the contents of CH<inf>4</inf>, CO<inf>2</inf>and N<inf>2</inf>in
the gas, and the concentrations of NO<inf>3</inf><sup>-</sup>, NO<inf>2</inf><sup>-
</sup>, NH<inf>4</inf><sup>+</sup>, SO<inf>4</inf><sup>2-</sup>, Fe(III) and Fe(II) in
the leachate and refuse were respectively determined. The results showed that adding
ferric iron obviously enhanced the removal of methane in anaerobic aged refuse, the
decrease of methane content with time obeyed zero-order kinetic, and the rate of methane
removal(denoted as CH<inf>4</inf>/aged refuse)reached 1.28 mmol·(kg·d)
<sup>-1</sup>. In the anaerobic condition, methane could improve the reduction of Fe(III)
to dissolved, active and bioavailable Fe(II). The active Fe(II) probably coupled to the
transformation of NO<inf>3</inf><sup>-</sup>and SO<inf>4</inf><sup>2-</sup>, and thus
accelerated the removal of NO<inf>3</inf><sup>-</sup>and SO<inf>4</inf><sup>2-</sup>.
© 2017, Science Press. All right reserved.
Number of references:26
Main heading:Methane
Controlled terms:Biogeochemistry - Couplings - Iron - Land fill - Leachate treatment -
Nitrogen compounds
Uncontrolled terms:Aged refuse - Anaerobic conditions - Anaerobic methane -
Biogeochemical cycle - Cover materials - Environmental biogeochemistries - Fe reductions
- Zero order kinetics
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal -
481.2 Geochemistry - 545.1 Iron - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201606032
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 80>
Accession number:20172603860975
Title:Residues of Organochlorine Pesticides (OCPs) in Water and Sediments from Nansha
Mangrove Wetland
Authors:Ding, Yang (1); Huang, Huan-Fang (1); Li, Hui (1); Luo, Jie (1, 2); Zheng, Huang
(1); Sun, Yan (1); Yang, Dan (3); Zhang, Yuan (1); Qi, Shi-Hua (1)
Author affiliation:(1) State Key Laboratory of Biogeology and Environmental Geology,
School of Environmental Studies, China University of Geosciences, Wuhan; 430074, China;
(2) Guangdong Hydrogeology Battalion, Guangzhou; 510510, China; (3) Faculty of
Engineering, China University of Geosciences, Wuhan; 430074, China
Corresponding author:Qi, Shi-Hua(shihuaqi@cug.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1431-1441
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Mangrove wetland plays an important role in coastal environment. A total of 10
surface water samples and 7 surface sediments samples were collected in March, 2015 from
Nansha mangrove wetland, and 8 compounds of organochlorine pesticides (OCPs) were
determined by GC-ECD to investigate residues level, source, and ecological risk of these
compounds in the study region. The result showed concentrations of OCPs in water ranged
from 1.89 to 90.19 ng·L<sup>-1</sup>(mean 30.16 ng·L<sup>-1</sup>), and
concentrations of OCPs in sediments varied from 3.10 to 16.02 ng·g<sup>-1</sup>
(average 8.58 ng·g<sup>-1</sup>). Compared with other estuaries and harbors around
the world, concentrations of OCPs in this study stayed at a median pollution level. The
mean values of distribution coefficient of HCHs and DDTs between water and sediments were
857 and 368, respectively. Sediments in some parts of the area, whose distribution
coefficient was relatively high, may bring water the secondary pollution. Source analysis
indicated that HCHs mainly originated from the application of Lindane, and DDTs
originated from mixed sources of dicofol and technical DDT. Compared with OCPs in water,
OCPs in sediments might contain more historical residual components. OCPs in water had
light ecological risk, but OCPs in sediments posed a potential high risk to mangrove
ecosystem. © 2017, Science Press. All right reserved.
Number of references:50
Main heading:Water pollution
Controlled terms:Ecology - Ecosystems - Pesticides - Pollution - River pollution -
Sediments - Water - Wetlands
Uncontrolled terms:Coastal environments - Distribution coefficient - Mangrove - Mangrove
ecosystems - Nansha - Organochlorine pesticides - Residual components - Secondary
pollution
Classification code:453 Water Pollution - 454.3 Ecology and Ecosystems - 483 Soil
Mechanics and Foundations - 803 Chemical Agents and Basic Industrial Chemicals
Numerical data indexing:Mass_Density 1.89e-09kg/m3 to 9.02e-08kg/m3, Mass_Density 3.02e-
08kg/m3
DOI:10.13227/j.hjkx.201609019
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 81>
Accession number:20172603861002
Title:Effect of Nano Zeolites on pH, CEC in Soil and Cd Fractions in Plant and Soil at
Different Cadmium Levels
Authors:Chi, Sun-Lin (1); Xu, Wei-Hong (1); Xiong, Shi-Juan (1); Wang, Wei-Zhong (1);
Qin, Yu-Li (1); Zhao, Wan-Yi (1); Zhang, Chun-Lai (1); Li, Yan-Hua (1); Li, Tao (1);
Zhang, Jin-Zhong (1); Xiong, Zhi-Ting (2); Wang, Zheng-Yin (1); Xie, De-Ti (1)
Author affiliation:(1) College of Resources and Environmental Sciences, Southwest
University, Chongqing; 400715, China; (2) College of Resources and Environmental
Sciences, Wuhan University, Wuhan; 430079, China
Corresponding author:Xu, Wei-Hong(xuwei_hong@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1654-1666
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Soil incubation experiment and pot experiment were carried out to investigate
the influence of nano zeolite (NZ) and ordinary zeolite (OZ) on the soil pH, cation
exchange capacity, concentration of soil Cd, soil Cd fraction and Cd uptake by Chinese
cabbage when exposed to different Cd pollution levels(1, 5, 10 and 15 mg·kg<sup>-
1</sup>). The results of soil incubation experiment showed that the nano zeolite and
ordinary zeolite dose(5, 10 and 20 g·kg<sup>-1</sup>) increased the soil pH and
cation exchange capacity, and decreased the concentration of soil exchangeable Cd, while
increased the concentration of Cd in carbonate, Fe-Mn oxide, organic matter and residual
fraction. The lowest EX-Cd was observed in the high nano zeolite (20 g·kg<sup>-
1</sup>) treatment. The soil pH and cation exchange capacity was extremely negatively
correlated with the concentration of soil exchangeable Cd(P<0.01), and extremely
positively correlated with the concentration of soil Fe-Mn oxide Cd(P<0.01). The
results of pot experiment showed that the FDC of exchangeable Cd in soil decreased by
6.4%-63.2%, and the FDC of water-extractable and ethnol-extractable Cd in Chinese cabbage
decreased by 2.1%-56% and 11.8%-100% with zeolite application, respectively. Moreover,
the reduction effect of nano zeolite on Cd concentration in soil and plant was better
than that of ordinary zeolite. The FDC of Cd fraction in shoot of Chinese cabbage showed
correlation with the FDC of carbonate Cd and organic matter Cd in soil(P<0.05) when
exposed to 1 mg·kg<sup>-1</sup>Cd pollution. Moreover, correlation was also found
in the FDC of organic matter Cd and residual Cd in soil(P<0.05) under 5
mg·kg<sup>-1</sup>Cd pollution. © 2017, Science Press. All right reserved.
Number of references:38
Main heading:Soil pollution
Controlled terms:Binary alloys - Biogeochemistry - Biological materials - Cadmium -
Cadmium alloys - Cadmium compounds - Electric network topology - Iron alloys - Manganese
- Manganese alloys - Organic compounds - Pollution - Positive ions - Soils - Zeolites
Uncontrolled terms:Cation exchange capacities - Cd concentrations - Chinese cabbage -
Pollution level - Reduction effects - Residual fraction - Soil incubation - Soil pH
Classification code:461.2 Biological Materials and Tissue Engineering - 481.2
Geochemistry - 483.1 Soils and Soil Mechanics - 543.2 Manganese and Alloys - 545.2
Iron Alloys - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth
Metals - 703.1 Electric Networks - 804.1 Organic Compounds - 804.2 Inorganic Compounds
Numerical data indexing:Percentage 1.18e+01% to 1.00e+02%, Percentage 2.10e+00% to 5.60e
+01%, Percentage 6.40e+00% to 6.32e+01%
DOI:10.13227/j.hjkx.201610095
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 82>
Accession number:20172603860974
Title:Nitrate Source Identification and Nitrification-denitrification at the Sediment-
water Interface
Authors:Jin, Zan-Fang (1); Gong, Jia-Lin (1); Shi, Yi-Li (1); Jin, Man-Tong (1); Li,
Fei-Li (1)
Author affiliation:(1) College of Environment, Zhejiang University of Technology,
Hangzhou; 310032, China
Corresponding author:Li, Fei-Li(lifeili@zjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1423-1430
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Identifying nitrate sources and its transformation mechanisms are important for
nitrate pollution control in surface water. The columnar core sediment samples in West
Lake were taken in different seasons. The transformation of nitrogen at the sediment-
water interface was studied using nitrogen and oxygen isotopes, stable isotope analysis
in R (SIAR) and acetylene inhibition method in the West Lake, Hangzhou. The results
showed that the concentration gradient of both NO<inf>3</inf><sup>-</sup>and
NH<inf>4</inf><sup>+</sup>existed at the sediment-water interface. NO<inf>3</inf><sup>-
</sup>concentrations decreased from bottom water to pore water and NO<inf>3</inf><sup>-
</sup>was accumulated in sediments. NH<inf>4</inf><sup>+</sup>concentrations increased
from bottom water to pore water and NH<inf>4</inf><sup>+</sup>was released from
sediments. Nitrate sources in bottom water where nitrification exited were sewage
(manure), soil nitrogen, chemical fertilizer and precipitation. Sewage (manure) was the
major nitrogen contributor (60.8%) in summer. Particularly high δ<sup>15</sup>N
values in pore water indicated that there was strong denitrification at the sediment-
water interface in West Lake. The average nitrification rate and denitrification rate at
the sediment-water interface were 2.85 mmol·(m<sup>2</sup>·d)<sup>-
1</sup>and 23.51 μmol·(m<sup>2</sup>·d)<sup>-1</sup>, respectively. The
sediment-water interface played a role in nitrogen removal process in aquatic
environment. Seasonal and spatial variations of nitrification rates and denitrification
rates were found in this study. Temperature and dissolved oxygen were the main
influential factors for the transformation of nitrogen at the sediment-water interface in
West Lake. © 2017, Science Press. All right reserved.
Number of references:40
Main heading:Water pollution control
Controlled terms:Biochemical oxygen demand - Denitrification - Dissolved oxygen -
Fertilizers - Isotopes - Lakes - Manures - Nitrates - Nitrification - Nitrogen -
Nitrogen fertilizers - Nitrogen removal - Oxygen - Pollution control - Precipitation
(chemical) - River pollution - Sediments - Sewage - Water - Water pollution
Uncontrolled terms:Concentration gradients - Denitrification rate - Nitrification-
denitrification - Nitrogen and oxygen isotopes - Nitrogen removal process - Sediment
water interface - Stable-isotope analysis - Transformation mechanisms
Classification code:452.1 Sewage - 453 Water Pollution - 453.2 Water Pollution Control
- 483 Soil Mechanics and Foundations - 802.2 Chemical Reactions - 802.3 Chemical
Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 821.5
Agricultural Wastes
Numerical data indexing:Percentage 6.08e+01%
DOI:10.13227/j.hjkx.201606116
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 83>
Accession number:20172603860970
Title:Distribution Characteristics of Water Temperature and Water Quality of Fuxian Lake
During Thermal Stratification Period in Summer
Authors:Wang, Lin-Jie (1); Yu, Hui (1); Niu, Yong (1); Niu, Yuan (1); Zhang, You-Lin (2);
Liu, Qian (1); Ji, Zheng-Yuan (3)
Author affiliation:(1) Research Center of Lake Eco-Environment, Chinese Research Academy
of Environmental Sciences, Beijing; 100012, China; (2) Fuxian Lake Administration of Yuxi
Municipality, Yuxi; 653199, China; (3) Environmental Monitoring Station of Yuxi, Yuxi;
653100, China
Corresponding author:Yu, Hui(yuhui@creas.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1384-1392
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to explore the distribution characteristics and change rule in daytime
of the water temperature and water quality of the deep plateau lake Fuxian Lake during
the thermal stratification period in summer, a typical point location was selected
respectively in the south, middle and north of Fuxian Lake in July 2014 to carry out
investigation and observation after stratified sampling at each point location and
continuous stratified sampling of the point location in the north during daytime. The
result showed that ①The distribution of water temperature of Fuxian Lake in summer
had the temperature distribution characteristics of deep lake during stratification
period. The segment from the surface to a depth of 15 meters was epilimnion with a range
of 25.51-22.81℃. The segment from the depth of 15m to 40m was thermocline with a
range of 22.81-14.72℃. The segment below 40m was hypolimnion with a range of 14.72
-13.70℃. The max temperature difference between the surface and the lakebed was
11.8℃, which was smaller than that of lakes in temperate zone during the same
period. The temperature of the lakebed was about 14℃ which was higher than that of
the lakes in temperate zone,which reflected the characteristics of water temperature
stratification of the deep plateau lake Fuxian Lake; ② The water temperature
stratification determined the characteristics of chemical stratification and the
ecological stratification: the pH, DO and conductivity presented the same layered
structure as the distribution of water temperature. What is noteworthy was that the DO
concentration of the lakebed was as low as 2-3mg·L<sup>-1</sup>. As an
oligotrophic lake, the DO became lower and lower at the lakebed of Fuxian Lake, which
indicated that it possibly faced ecological risks. Due to the separation of thermocline,
the nutritive salt accumulative effect appeared in the hypolimnion. Chlorophyll a and
permanganate index had a corresponding response relation with the water temperature
stratification and showed the max value at the upper layer of the lake. ③ During
the thermal stratification period, the water temperature stratification of Fuxian Lake
had a change during daytime. The increased thermal radiation in the noon caused the
thermocline to dive, the strength to increase and the depth to narrow, which
significantly influenced the dynamic distribution of pH, DO, conductivity and chlorophyll
a of the epilimnion and the thermocline. The change rule of TP, TN and permanganate index
during the daytime was not significant. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Lakes
Controlled terms:Chlorophyll - Ecology - Location - Stream flow - Temperature -
Temperature distribution - Thermal stratification - Water quality
Uncontrolled terms:Distribution characteristics - Distribution of water - Dynamic
distribution - Layered Structures - Stratified sampling - Temperature differences -
Vertical distributions - Water temperatures
Classification code:407.2 Waterways - 445.2 Water Analysis - 454.3 Ecology and
Ecosystems - 641.1 Thermodynamics - 804.1 Organic Compounds
Numerical data indexing:Mass_Density 2.00e-03kg/m3 to 3.00e-03kg/m3, Size 1.50e+01m, Size
1.50e+01m to 4.00e+01m, Size 4.00e+01m
DOI:10.13227/j.hjkx.201607165
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 84>
Accession number:20172603860981
Title:Simultaneous Photocatalytic Reduction of Cr(VI) and Oxidation of SSA by Carbon
Nitride
Authors:Li, Li-Li (1, 2); Chen, Cui-Bai (1); Lan, Hua-Chun (2); Liu, Fei (1); An, Xiao-
Qiang (2)
Author affiliation:(1) School of Water Resources and Environment, China University of
Geosciences, Beijing; 100083, China; (2) Key Laboratory of Drinking Water Science and
Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences,
Beijing; 100085, China
Corresponding author:An, Xiao-Qiang(xqan@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1483-1489
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Carbon nitride is a novel nonmetal semiconductor photocatalyst, which has
developed into an ideal environmental treatment material in recent years. Graphite carbon
nitride(g-C<inf>3</inf>N<inf>4</inf>) was prepared through pyrolysis melamine, and the
structure, morphology and optical properties of samples were characterized by X-ray
diffraction(XRD), transmission electron microscopy(TEM) and UV-Vis diffuse reflectance
spectra(UV-Vis DRS). The potential application of g-C<inf>3</inf>N<inf>4</inf>in the
simultaneous photocatalysis reduction of Cr(VI) and oxidation of sulfosalicylic acid(SSA)
was further explored. And the effects of different conditions such as catalyst dosage, pH
and initial concentration ratio of Cr(VI) with SSA on the simultaneous photocatalysis
were also investigated. The results showed that when the catalyst dosage was 0.5
g·L<sup>-1</sup>, pH=2, the initial concentration ratio of Cr (VI) and SSA was
1∶4(10 mg·L<sup>-1</sup>∶40 mg·L<sup>-1</sup>), optimal
simultaneous photocatalysis efficiency was achieved, which was more than 3 times higher
than that of the separated photoreduction or photooxidation reactions. Within 3 hours,
the reduction ratio of Cr(VI) and oxidation ratio of SSA could reach 98.9% and 93.4%,
respectively. The mechanism of simultaneous photocatalysis was discussed. Cr(VI) was
reduced by electrons and SSA was oxidized by the combined function of hole,
O<inf>2</inf><sup>·-</sup>and ·OH under visible light. © 2017, Science
Press. All right reserved.
Number of references:27
Main heading:Carbon nitride
Controlled terms:Catalysis - Catalysts - Chromium compounds - High resolution
transmission electron microscopy - Nitrides - Optical properties - Oxidation -
Photocatalysis - Photooxidation - Transmission electron microscopy - X ray diffraction
Uncontrolled terms:Environmental treatment - G-C<inf>3</inf>N<inf>4</inf> - Initial
concentration - Photocatalysis reduction - Reaction mechanism - Semiconductor
photocatalyst - Sulfosalicylic acid - UV-vis diffuse reflectance spectra
Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 802.2
Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical
Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 5.00e-01kg/m3, Percentage 9.34e+01%, Percentage
9.89e+01%, Time 1.08e+04s
DOI:10.13227/j.hjkx.201609180
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 85>
Accession number:20172603860989
Title:Nitrogen Removal Characteristics and Diversity of Microbial Community in ANAMMOX
Reactor
Authors:Cao, Yan (1); Wang, Tong-Yu (1); Qin, Yu-Jie (1, 2, 3); Han, Bin (1); Ren, Jun-Yi
(1)
Author affiliation:(1) College of Environment and Energy, South China University of
Technology, Guangzhou; 510006, China; (2) The Key Laboratory of Pollution Control and
Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University
of Technology, Guangzhou; 510006, China; (3) Guangdong Provincial Key Laboratory of
Atmospheric Environment and Pollution Control, South China University of Technology,
Guangzhou; 510006, China
Corresponding author:Qin, Yu-Jie(qinyujie@scut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1544-1550
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The volume loading of upflow blanket filter increased from 0.52 kg·
(m<sup>3</sup>·d)<sup>-1</sup>to 2.75 kg·(m<sup>3</sup>·d)<sup>-
1</sup>by improving the influent NH<inf>4</inf><sup>+</sup>-N and NO<inf>2</inf><sup>-
</sup>-N concentrations. The removal efficiency of NH<inf>4</inf><sup>+</sup>-N,
NO<inf>2</inf><sup>-</sup>-N and TN increased from 76.18%, 53.47%, 55.66% to 94.04%,
86.97%, 82.96% respectively. Meanwhile, the microbial community of UBF ANAMMOX reactor
was analyzed by Illumina high-throughput sequencing during the initial and later
operational process. The results indicated that the denitrifying bacteria coexisted in
the reactor. The percentages of Planctomycetes, Proteobacteria and Nitrospirae in the
sludge were 27.9%-39.9%, 1.1%-26.4% and 0.035%-0.188%, respectively. The proportions of
Planctomycetes and Proteobacteria increased from 1.1%, 27.9% in the enrichment stage to
26.4%, 39.9% in the stable operation stage respectively. In addition, Planctomycetes
increased significantly. The proportion of Brocadiacea reached 24.57%. Therefore,
Brocadiacea became the dominant bacteria in the phylum Planctomycete, which contained
Candidatus brocadia. The alpha diversity index and relative abundance of clustering
figure indicated that the diversity of microbial community decreased gradually and the
structure of microbial community changed obviously. © 2017, Science Press. All right
reserved.
Number of references:24
Main heading:Nitrogen removal
Controlled terms:Bacteria - Denitrification - Microorganisms - Nitrogen compounds -
Nitrogen oxides - Wastewater treatment
Uncontrolled terms:ANAMMOX - Anammox bacteria - High-throughput sequencing - Microbial
communities - Upflow blanket filter
Classification code:452.4 Industrial Wastes Treatment and Disposal - 461.9 Biology -
802.2 Chemical Reactions - 804.2 Inorganic Compounds
Numerical data indexing:Percentage 1.10e+00%, Percentage 2.46e+01%, Percentage 2.64e+01%,
Percentage 2.79e+01%, Percentage 2.79e+01% to 3.99e+01%, Percentage 3.50e-02% to 1.88e-
01%, Percentage 3.99e+01%, Percentage 5.35e+01% to 9.40e+01%, Percentage 7.62e+01%,
Percentage 8.30e+01%, Percentage 8.70e+01%
DOI:10.13227/j.hjkx.201610081
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 86>
Accession number:20172603861008
Title:Microbial Community Structure and Diversity in Cellar Water by 16S rRNA High-
throughput Sequencing
Authors:Yang, Hao (1, 2); Zhang, Guo-Zhen (1, 2); Yang, Xiao-Ni (3); Wu, Fu-Ping (1, 2);
Zhao, Wei (1, 2); Zhang, Hong-Wei (1); Zhang, Xiang (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Lanzhou
Jiaotong University, Lanzhou; 730070, China; (2) Engineering Research Center for Cold and
Arid Regions Water Resource Comprehensive Utilization, Ministry of Education, Lanzhou;
730070, China; (3) College of Natural Resources and Environment, Gansu Agricultural
University, Lanzhou; 730070, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1704-1716
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study was aimed to explore the bacterial diversity of cellar water as well
as to study the relationship between the bacterial diversity and environmental factors.
The MiSeq high-throughput sequencing was used to analyze and compare the bacterial
diversity and community composition of samples from different cellar water samples.
Overall 1 605 optimized reads were obtained from four samples based on high-throughput
sequencing of the V4 region of the 16S rRNA gene. Bacterial species detected in these
samples covered 22 phyla, 42 classes, 71 orders, 115 families, 146 genera. Analysis
showed that the bacterial diversity was very high in these samples, and there were
differences among different samples. The distribution characteristics of the dominant
bacteria showed patterns of a large number of rare species and a few common types.
Taxonomic assignment analysis indicated that Bacteroidetes, Proteobacteria,
Actinobacteria, Verrucomicrobia, OD1 dominated in the Cellar water, and accounted for
87.1% to 94.8% at phylum level. The predominant groups were Actinobacteria,
Acidimicrobiia, Cytophagia, Flavobacteriia, Sphingobacteriia, α-Proteobacteria,
β-Proteobacteria, γ-Proteobacteria, Opitutae, Verrucomicrobiae, Pedosphaerae
and ZB2 at class level. At genus level Rhodobacter, Dechloromonas, Flavobacterium,
Acinetobacter, Comamonas, Pseudomonas, Hydrogenophaga, et al were the abundant taxa,
which were mainly denitrifying bacteria and heterotrophic nitrification-aerobic
denitrification bacteria. The result of RDA suggested that the influences of different
environmental factors on different microbes were different. Bacterial community II had
significant positive correlation with UV<inf>254</inf>, permanganate index,
BOD<inf>5</inf>, and Bacterial community III had significant positive correlation with
TN, NO<inf>2</inf><sup>-</sup>-N, NO<inf>3</inf><sup>-</sup>-N, TP, NH<inf>4</inf><sup>
+</sup>-N. This research should deepen the understanding on microbial community in Cellar
water, and provide references for the association of bacterial composition and diversity
with environmental factors. © 2017, Science Press. All right reserved.
Number of references:45
Main heading:Bacteria
Controlled terms:Aerobic bacteria - Denitrification - Microorganisms - Nitrogen compounds
- RNA - Throughput
Uncontrolled terms:Bacterial diversity - Community composition - Denitrifying bacteria -
Distribution characteristics - Heterotrophic nitrification-aerobic denitrifications -
High-throughput sequencing - Microbial community structures - Rain water harvesting
Classification code:461 Bioengineering and Biology - 802.2 Chemical Reactions
Numerical data indexing:Percentage 8.71e+01% to 9.48e+01%
DOI:10.13227/j.hjkx.201608097
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 87>
Accession number:20172703864531
Title:Source Analysis, Spatial Distribution and Pollution Assessment of Heavy Metals in
Sewage Irrigation Area Farmland Soils of Longkou City
Authors:Li, Chun-Fang (1); Wang, Fei (1); Cao, Wen-Tao (1); Pan, Jian (1); Lü,
Jian-Shu (1); Wu, Quan-Yuan (1)
Author affiliation:(1) College of Geography and Environment, Shandong Normal University,
Ji'nan; 250014, China
Corresponding author:Lü, Jian-Shu(lvjianshu@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1018-1027
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Farmland soils in sewage irrigation area at Longkou City were collected, soil pH
together with the heavy metal content were tested. Taking 70 soil points as the study
object, this paper investigated the source of heavy metals in this area based on the
correlation analysis and PCA of multivariate statistical analysis theory. We studied the
spatial variation and distribution characteristics about heavy metals using both the
theory of geostatistics and GIS spatial interpolation method. At last, the heavy metal
pollution was evaluated in the way of Nemerow Index and improved fuzzy evaluation method.
It turned out that, 9 kinds of heavy metal elements in the soil of research area had a
certain degree of enrichment, among them the average of Cd was 3.06 times as high as the
background value, and its enrichment was most severe. The result of Nemerow Index showed
that, the values of comprehensive pollution index of Cu, Cd and Pb respectively were
7.06, 6.10 and 5.54, and they all belonged to high levels of pollution. According to the
results of correlation analysis and principal component analysis, Cu, Zn together with
Pb, Cd were mainly affected by human factors, sewage irrigation was their common
pollution factor, the pollution sources for the first two heavy metals included excessive
use of chemical fertilizers and pesticides in agricultural production and the
accumulation of long time, whereas pollution from northern coal mining and coal gangue
piled up as well as plating, machinery manufacturing and other industrial pollution were
the pollution sources of the latter two elements. Other elements (Co, Cr, Mn, Ni and As)
were mainly influenced by natural factors such as parent material. Comprehensive
evaluation results showed that, among the 70 points, 13 points had moderate pollution, 23
points belonged to light pollution, 28 points were at alert level, 6 points were in the
safe range. From the perspective of spatial distribution, high value areas of heavy metal
contents were mainly concentrated in towns of Zhuyouguan and Xufu. This showed that,
sewage irrigation caused a certain degree of heavy metal pollution to local soil. ©
2017, Science Press. All right reserved.
Number of references:34
Main heading:Copper
Controlled terms:Agriculture - Cadmium - Chemical analysis - Correlation methods -
Electron emission - Farms - Fertilizers - Heavy metals - Irrigation - Lead - Machinery -
Metal analysis - Multivariant analysis - Pollution - Principal component analysis -
Sewage - Soils - Spatial distribution - Statistical methods
Uncontrolled terms:Fuzzy comprehensive evaluation - Geo-statistics - Multivariate
statistical analysis - Pollution sources - Sewage irrigation
Classification code:452.1 Sewage - 483.1 Soils and Soil Mechanics - 531 Metallurgy and
Metallography - 544.1 Copper - 546.1 Lead and Alloys - 549.3 Nonferrous Metals and
Alloys excluding Alkali and Alkaline Earth Metals - 804 Chemical Products Generally -
821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.3
Agricultural Methods - 921 Mathematics - 922 Statistical Methods - 922.2 Mathematical
Statistics
DOI:10.13227/j.hjkx.201607201
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 88>
Accession number:20172703864550
Title:Effect of PFOA on Oxidative Stress and Membrane Damage of Escherichia coli
Authors:Yang, Meng (1, 2, 3, 4); Li, Yi (1, 2, 3, 4); Ye, Jin-Shao (1, 2, 3, 4); Long,
Yan (1, 2, 3, 4); Qin, Hua-Ming (1, 2, 3, 4)
Author affiliation:(1) School of Environment, Jinan University, Guangzhou; 510632, China;
(2) Key Laboratory of Environmental Pollution and Health of Guangdong Province,
Guangzhou; 510632, China; (3) Guangdong Provincial Research Center for Environment
Pollution Control and Remediation Materials, Guangzhou; 510632, China; (4) Key Laboratory
of Environmental Exposure and Health of Guangzhou, Guangzhou; 510632, China
Corresponding author:Qin, Hua-Ming(huamingqin@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1167-1172
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Perfluorooctanoic acid (PFOA) is widely used in industrial production because of
its strong chemical stabilities and good hydrophobic and oleophobic properties. It was
considered to be a widespread persistent organic pollutant in environment in recent
years. The oxidative stress and membrane damage of Escherichia coli exposed to PFOA were
measured by flow cytometry (FCM) and the toxic mechanism of PFOA was also preliminarily
explored. The results showed that, under the stress of PFOA, the intracellular reactive
oxygen species (ROS) content of E. coli increased, the unsaturation degree of fatty acid
decreased, the malondialdehyde (MDA) content increased, the membrane permeability
increased, the membrane potential decreased, and the activities of Na<sup>+</sup>K<sup>
+</sup>-ATPase and Ca<sup>2+</sup>Mg<sup>2+</sup>-ATPase showed a compensatory increase
first and then decreased. Therefore, owing to the stress of PFOA, the higher
intracellular ROS in E. coli reacted with membrane unsaturated fatty acids by
peroxidation, and then reduced cell membrane fatty acid saturation, accumulated MDA in
cells, and further caused damage to cell membrane, reduced the ATPase activity, and
eventually resulted in inactivation or apoptosis of E. coli. This study provided more
evidence for the further study on environmental ecological toxicology of PFOA. ©
2017, Science Press. All right reserved.
Number of references:29
Main heading:Fatty acids
Controlled terms:Aldehydes - Cell death - Cytology - Escherichia coli - Flow cytometry -
Membranes - Organic pollutants - Unsaturated fatty acids
Uncontrolled terms:ATPase - Cell membrane fatty acid - Industrial production -
Malondialdehyde - Membrane permeability - Perfluorooctanoic acid - Persistent organic
pollutant (POP) - Reactive oxygen species
Classification code:461.9 Biology - 741.3 Optical Devices and Systems - 804.1 Organic
Compounds - 951 Materials Science
DOI:10.13227/j.hjkx.201609001
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 89>
Accession number:20172703864542
Title:Impact of Starvation Conditions on Biological Community Structure in Sulfur
Autotrophic Denitrification Reactor
Authors:Li, Fang-Fang (1, 2); Shi, Chun-Hong (1, 2); Li, Hai-Bo (1); Yuan, Rong-Fang (1);
Ma, Fang-Shu (1)
Author affiliation:(1) College of Energy and Environmental Engineering, Beijing
University of Science and Technology, Beijing; 100083, China; (2) Beijing Key Laboratory
of Resource-Oriented Treatment of Industrial Pollutants, Beijing; 100083, China
Corresponding author:Shi, Chun-Hong(sch.22@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1109-1115
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Sulfur/dolomite and pyrite/dolomite autotrophic denitrification reactors were
applied to treat the secondary effluent of wastewater treatment plant to explore the
removal effect, the changes of microbial community, and recovery time of reactors after
starvation period. It was shown in the results that after 30 d non-water starvation
endurance, the effluent concentrations of NO<inf>3</inf><sup>-</sup>-N in sulfur/dolomite
and pyrite/dolomite reactors increased from 1.78 mg·L<sup>-1</sup>, 11.32
mg·L<sup>-1</sup>to 27.87 mg·L<sup>-1</sup>, 26.56 mg·L<sup>-
1</sup>respectively at the low temperature of 12-14℃. In addition, sulfur/dolomite
and pyrite/dolomite reactors recovered within 5 d and 11 d since restarted and could
maintain a good effect of nitrogen removal at low temperature. MiSeq high throughput
sequencing results showed that the abundance and diversity of the bacterial communities
in starvation period in both reactors were lower than those in recovery period. The
dominating phylum was Proteobacteria in both reactors while the dominating class was
β-Proteobacteria. Thiobacillus was identified as the main genus for denitrification
in sulfur/dolomite reactor. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Effluents
Controlled terms:Denitrification - Effluent treatment - Nitrogen removal - Recovery -
Secondary recovery - Social sciences - Sulfur - Temperature - Throughput - Wastewater
treatment
Uncontrolled terms:Autotrophic denitrification - Community structures - High-throughput
sequencing - Low temperatures - Microbial diversity - Starvation period
Classification code:452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and
Disposal - 511.1 Oil Field Production Operations - 641.1 Thermodynamics - 802.2
Chemical Reactions - 804 Chemical Products Generally - 971 Social Sciences
Numerical data indexing:Mass_Density 1.78e-03kg/m3 to 2.79e-02kg/m3, Mass_Density 2.66e-
02kg/m3
DOI:10.13227/j.hjkx.201609008
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 90>
Accession number:20172703864554
Title:Effect of Different Iron Minerals on Bioaccessibility of Soil Arsenic Using in
vitro Methods
Authors:Zhong, Song-Xiong (1, 2); Yin, Guang-Cai (1); Huang, Run-Lin (1); He, Hong-Fei
(1); Chen, Zhi-Liang (2); Lin, Qin-Tie (1); Wang, Wen-Ke (1)
Author affiliation:(1) School of Environmental Science and Engineering, Guangdong
University of Technology, Guangzhou; 510006, China; (2) South China Institute of
Environmental Science, Ministry of Environmental Protection, Guangzhou; 510665, China
Corresponding author:Chen, Zhi-Liang(chenzhiliang@scies.org)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1201-1208
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To explore the effects of different iron minerals on soil arsenic
bioaccessibility, ferrihydrite, goethite and hematite were used in PBET, SBRC and IVG
in-vitro experiments in this study. The relationship between arsenic bioavailability in
gastric, small intestinal phases and arsenic speciation was also studied. The results
showed that when 1% ferrihydrite was added, arsenic bioavailability in gastric phase was
2.22%, 5.11% and 7.43% by PBET, SBRC and IVG methods, respectively, while in the small
intestinal phase it was 3.39%, 2.33% and 6.18%. At an elevated ferrihydrite dosage of 2%,
significant difference in arsenic bioavailability was observed in both phases
(P<0.05). According to in vitro experiments, the addition of the same amount of
different iron minerals had contributed to the decrease in arsenic bioavailability to
varying extents in contrast with the blank group, in the descending order of ferrihydrite
(F1)>goethite (G1)>hematite (H1) (F2>G2>H2). Total arsenic in exchangeable
(F1) and specifically sorbed (F2) state was found positively correlated with arsenic
bioavailability in gastric phase by PBET, SBRC and IVG methods, the correlation
coefficient of which being r=0.93, P=0.002, r=0.90, P=0.004 and r=0.89, P=0.006,
respectively. It was also found that arsenic bioavailability in gastric phase was
positively correlated with total arsenic in F1 and F2 states by PBET (r=0.94, P=0.001)
and IVG (r=0.87, P=0.009) methods, but no significant correlation was observed by SBRC
method. Additionally, three in vitro experiments showed that amorphous iron bound arsenic
had significant negative correlation with arsenic bioavailability in gastric phase and
small intestinal phase, except that no correlation was found in small intestinal phase by
SBRC method. © 2017, Science Press. All right reserved.
Number of references:42
Main heading:Arsenic
Controlled terms:Biochemistry - Hematite - Iron - Minerals - Stabilization
Uncontrolled terms:Arsenic bioavailability - Arsenic speciation - Bioaccessibility -
Correlation coefficient - In-vitro - Iron minerals - Negative correlation - Total
arsenics
Classification code:482.2 Minerals - 545.1 Iron - 801.2 Biochemistry - 804 Chemical
Products Generally
Numerical data indexing:Percentage 1.00e+00%, Percentage 2.00e+00%, Percentage 2.22e+00%,
Percentage 2.33e+00%, Percentage 3.39e+00%, Percentage 5.11e+00%, Percentage 6.18e+00%,
Percentage 7.43e+00%
DOI:10.13227/j.hjkx.201608107
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 91>
Accession number:20172703864533
Title:Peroxidation of High Algae-laden Water by Ozone: Algae Organic Matter
Transformation and Disinfection By-products Formation
Authors:Zhang, Sai (1); Hu, Xue-Bin (1); Gu, Li (1); Li, Li (1); Guo, Xian-Qiang (2)
Author affiliation:(1) Key Laboratory of Eco-environments in Three Gorges Reservoir
Region, Faculty of Urban Construction and Environmental Engineering, Chongqing
University, Chongqing; 400045, China; (2) China Southwest Architectural Design and
Research Institute Co., Ltd., Shandong Branch, Qingdao; 266073, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1038-1045
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Formation characteristics and transferring feature of nitrogenous/carbonaceous
disinfection by-products have been observed under different ozone dosages and pH
conditions, and essential nature conversion of Algae organic matters has been also
studied concurrently, based on high algae-laden water. The results showed as follows:
reduction of Microcystis aeruginosa could reach 36% at the ozonation concentration of
28.92 mg·L<sup>-1</sup>. Humic acid-like compounds first increased and then
decreased with continuing addition of ozone dosage, whereas soluble microbial products,
fulvic acids and aromatic protein substance all diminished. Low dosage of ozone had
certain effect on control of dichloroacetonitrile (DCAN) and trichloroacetonitrile (TCAN)
formation potential, yet augmented the yield of trichloronitromethane (TCNM) and 1,1,1-
trichloroacetone (1,1,1-TCP) precursors, and N-DBPs formation potential was promoted with
the increase of ozone dosage. Algae removal efficiency was relatively the best under the
acidic condition, meanwhile, UV<inf>254</inf>and DOC increased with the rise of pH,
though the change was not outstanding. Humic acid-like compounds decreased with the rise
of pH; ozonation could degrade the soluble microbial products and the consequence was
affected little by the change of pH. DCAN and TCAN formation potential decreased with the
rise of pH; TCNM formation potential appeared to be the highest when the pH was 10,
whereas the highest 1,1,1-TCP formation potential was found at pH 7. © 2017, Science
Press. All right reserved.
Number of references:38
Main heading:Ozone water treatment
Controlled terms:Algae - Biogeochemistry - Biological materials - Disinfection - Organic
acids - Organic compounds - Ozone - Ozonization - pH - Transmission control protocol
Uncontrolled terms:Disinfection by-product - Disinfection by-products formations -
Fluorescence excitation emission matrix - Formation characteristics - Microcystis
aeruginosa - Nitrogenous disinfection by-products - Soluble microbial products -
Trichloronitromethane
Classification code:461.2 Biological Materials and Tissue Engineering - 723 Computer
Software, Data Handling and Applications - 801.1 Chemistry, General - 801.2
Biochemistry - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.1
Organic Compounds
Numerical data indexing:Mass_Density 2.89e-02kg/m3, Percentage 3.60e+01%
DOI:10.13227/j.hjkx.201608080
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 92>
Accession number:20172703864535
Title:Fenton-like Catalytic Removal of Organic Pollutants in Water by Framework Cu in
Cu-Al<inf>2</inf>O<inf>3</inf>
Authors:Xu, Dan (1); Zhang, Li-Li (2); Liu, Li-Fen (1)
Author affiliation:(1) School of Food and Environment, Dalian University of Technology,
Panjin; 124221, China; (2) Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing; 100085, China
Corresponding author:Zhang, Li-Li(llzhang@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1054-1060
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To address the problem of low activity for Fe-based Fenton-like catalysts at
neutral pH, Cu-Al<inf>2</inf>O<inf>3</inf>Fenton-like catalyst was prepared by a simple
co-precipitation method. The samples were characterized by means of X-ray diffraction
(XRD), X-ray photoelectron spectroscopy (XPS) and diffuse reflectance UV-vis spectra
(UV-vis DRS). The results showed that both Cu<sup>2+</sup>and Cu<sup>+</sup>mainly
existed in the bulk framework of Al<inf>2</inf>O<inf>3</inf>for Cu-
Al<inf>2</inf>O<inf>3</inf>with appropriate Cu doping (lower than 4.77% Cu), forming the
bond of Al-O-Cu, while excessive Cu doping in Al<inf>2</inf>O<inf>3</inf>(e.g. 7.58% Cu)
could result in the occurrence of extraframework Cu species. The Fenton-like catalytic
performance of the prepared samples was evaluated by the degradation of 2-chlorophenol
(2-CP) and Rhodamine B (RhB). The results showed that the catalyst with framework Cu
species had high catalytic activity and stability for the degradation of 2-CP and RhB.
After reaction for 2 h, the degradation rate of 2-CP reached up to 54% over Cu-
Al<inf>2</inf>O<inf>3</inf>(4.77% Cu) in the presence of H<inf>2</inf>O<inf>2</inf>, the
corresponding TOC removal reached 49%, and the Cu release concentration was only 0.0255
mg·L<sup>-1</sup>. However, the existence of extraframework Cu in
Al<inf>2</inf>O<inf>3</inf>would lead to the reduction of the catalytic performance. ESR
analysis showed that ·OH and HO<inf>2</inf><sup>-</sup>/O<inf>2</inf><sup>-
·</sup>were the primary active species. © 2017, Science Press. All right
reserved.
Number of references:26
Main heading:Copper alloys
Controlled terms:Aluminum - Aluminum alloys - Binary alloys - Catalyst activity -
Catalysts - Degradation - Organic pollutants - Photoelectron spectroscopy - Pollution -
Precipitation (chemical) - Water pollution - Water treatment - X ray diffraction - X ray
photoelectron spectroscopy
Uncontrolled terms:2-chlorophenols - Active species - Catalytic performance - Catalytic
removal - Coprecipitation method - Degradation rate - Diffuse reflectance-UV-vis - Fenton
likes
Classification code:445.1 Water Treatment Techniques - 453 Water Pollution - 541.1
Aluminum - 541.2 Aluminum Alloys - 544.2 Copper Alloys - 802.2 Chemical Reactions -
802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804
Chemical Products Generally - 804.1 Organic Compounds
Numerical data indexing:Mass_Density 2.55e-05kg/m3, Percentage 4.90e+01%, Percentage
5.40e+01%, Time 7.20e+03s
DOI:10.13227/j.hjkx.201608058
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 93>
Accession number:20172703864551
Title:Physicochemical Properties and Antibacterial Effect of Silver Nanoparticles: A
Comparison of Environmental and Laboratorial Conditions
Authors:Yi, Jun (1, 2); Cheng, Jin-Ping (1, 2, 3)
Author affiliation:(1) State Key Laboratory of Estuarine and Coastal Research, East China
Normal University, Shanghai; 200062, China; (2) Shenzhen Key Laboratory for the
Sustainable Use of Marine Biodiversity, Research Centre for the Oceans and Human Health,
City University of Hong Kong Shenzhen Research Institute, Shenzhen; 518057, China; (3)
Environmental Science Programs, The Hong Kong University of Science and Technology, Hong
Kong
Corresponding author:Cheng, Jin-Ping(jinpingcheng@gmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1173-1181
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study aimed to understand how the physicochemical properties of silver
nanoparticles (AgNPs) affected its toxicity in the aquatic environment. The morphologies
of oleylamine-coated AgNPs (4 nm) under environmental and laboratory water conditions
were studied under transmission electron microscopy, and the results showed oleylamine-
coated AgNPs formed big aggregates in the environmental water samples after 12 h
equilibration. Dynamic light scattering results also showed that oleylamine-coated AgNPs
had larger hydrodynamic size in all water samples as compared to its primary size (4 nm).
Exposure to oleylamine-coated AgNPs inhibited the growth of Bacillus subtilis (B.
subtilis) and reduced its cell viability in Luria-Bertani (LB) broth and 0.85% NaCl,
respectively. A dose-dependent toxicity of AgNPs in B. subtilis was observed in
laboratorial medium conditions but not in environmental water condition. Low
concentration of AgNPs exhibited lower toxicity in environmental water samples as
compared to that in laboratorial medium conditions. Separating AgNPs from bacterial
suspension through a dialysis membrane enhanced the cell viability of B. subtilis
significantly. In the environmental water samples, the AgNPs-bacteria interaction would
be reduced with the formation of big aggregates by AgNPs, which consequently decreased
its toxicity in aquatic environment. © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Silver
Controlled terms:Aggregates - Bacteriology - Dialysis membranes - High resolution
transmission electron microscopy - Metal nanoparticles - Nanoparticles - Toxicity -
Transmission electron microscopy
Uncontrolled terms:Aquatic toxicity - Bacillus Subtilis - Environmental water samples -
Laboratorial medium conditions - Silver nanoparticles
Classification code:406 Highway Engineering - 461.7 Health Care - 547.1 Precious
Metals - 741.3 Optical Devices and Systems - 761 Nanotechnology
Numerical data indexing:Percentage 8.50e-01%, Size 4.00e-09m, Time 4.32e+04s
DOI:10.13227/j.hjkx.201608182
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 94>
Accession number:20171003409535
Title:Sources and pollution characteristics of antibiotic resistance genes and
conditional pathogenic bacteria in concentrated poultry feeding operations
Authors:Gao, Min (1); Qiu, Tian-Lei (1); Qin, Yu-Cheng (2); Wang, Xu-Ming (1, 3)
Author affiliation:(1) Beijing Key Laboratory of Agricultural Genetic Resources and
Biotechnology, Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture
and Forestry Sciences, Beijing; 100097, China; (2) Pinggu Animal Health Inspection of
Beijing, Beijing; 101200, China; (3) Key Laboratory of Urban Agriculture (North),
Ministry of Agriculture, Beijing; 100097, China
Corresponding author:Wang, Xu-Ming(wangxuming@baafs.net.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:510-516
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Concentrated animal feeding operations (CAFOs) is considered a source of
airborne human pathogens and antibiotic resistance genes. This study collected fecal
samples and corresponding air samples from inside and outside atmospheric environments of
layer and broiler feeding operations. We detected the types of 61 genes including five
classes of antibiotics antibiotic resistance genes (23 genes of ampicillin, 23 genes of
tetracycline, 5 genes of quinolones, 5 genes of sulfonamides and 2 genes of
erythromycin), five conditional pathogenic bacteria (Enterococcus, Escherichia coli,
Staphylococcus, Campylobacter and Clostridium perfringens) and class1 integron.
Quantitative real time PCR was used to analyze concentrations of typical genes with
relatively high detection rates. The results indicated that the detection rates of
antibiotic resistance genes were 8, 7, 2, 3 and 2. At the same time, two kinds of
pathogenic bacteria were detected. The detection rates of the target genes in the air
were lower than those of the fecal sample. The total bacterial gene (16S rDNA)
concentration in the air of layer and broiler was 10<sup>6</sup>copies·m<sup>-
3</sup>, and that of the other typical genes was about
10<sup>4</sup>copies·m<sup>-3</sup>. And the outdoor concentration was much lower
than the indoor concentration. The proportions of antibiotic resistance genes and
conditional pathogenic bacteria in the air were higher than those in the fecal samples
and the outdoor proportions were lower than the indoor proportions. Preliminary results
of this study indicated that feces was an important source of antibiotic resistance
genes, conditional pathogenic bacteria and class1 integron. Aerosolization degrees of
genes in feces were different. This study will provide the basic data for both source
tracking of antibiotic resistance genes and pathogens from CAFOs and risk assessment of
pollution of CAFOs in the surrounding air environment. © 2017, Science Press. All
right reserved.
Number of references:34
Main heading:Genes
Controlled terms:Air quality - Antibiotics - Bacteria - Escherichia coli - Feeding -
Pollution - Polymerase chain reaction - Risk assessment - Sulfur compounds
Uncontrolled terms:Antibiotic resistance genes - Atmospheric environment - Bioaerosols -
Clostridium perfringens - Concentrated animal feeding operations - Feeding operations -
Outdoor concentrations - Quantitative real time PCR
Classification code:451.2 Air Pollution Control - 461.2 Biological Materials and Tissue
Engineering - 461.6 Medicine and Pharmacology - 691.2 Materials Handling Methods -
801.2 Biochemistry - 914.1 Accidents and Accident Prevention
DOI:10.13227/j.hjkx.201606162
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 95>
Accession number:20171003409544
Title:Repression of nitrogen and phosphorus release from lakeshore sediment by five
littoral-zone plants
Authors:Yao, Cheng (1); Hu, Xiao-Zhen (1); Lu, Shao-Yong (1); Geng, Rong-Mei (1)
Author affiliation:(1) State Key Laboratory of Environmental Criteria and Risk
Assessment, Research Center of Lake Eco-Environment, Chinese Academy of Environmental
Sciences, Beijing; 100012, China
Corresponding author:Hu, Xiao-Zhen(huxz@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:589-599
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The article researched the effect of Iris pseudacorus L., Paspalum distichum L.,
Leersia hexandra Swartz, Ludwigia peploides and Hydrocotyle vulgaris on the nitrogen and
phosphorus repression in sandy soil from lower reaches of Yangtze River and clay from
stored littoral zone. The result indicated that plants had a significant inhibitory
effect on total phosphorus release from sediment, with concentration in overlaying water
below 0.02 mg·L<sup>-1</sup>in Paspalum distichum L., Hydrocotyle vulgaris, Iris
pseudacorus group, below 0.03 mg·L<sup>-1</sup>in Leersia hexandra Swartz,
Ludwigia peploides group; with release rate below 0.1 d<sup>-1</sup>in Leersia hexandra
Swartz and Ludwigia peploides group, below 0.05 d<sup>-1</sup>in Paspalum distichum L.,
Hydrocotyle vulgaris, Iris pseudacorus group. While the plants were proved to aggravate
total nitrogen release by accumulating in sediment, with concentration in overlaying
water below 0.4 mg·L<sup>-1</sup>in Paspalum distichum and Iris pseudacorus L.
group; with release rate below 0.02 mg·L<sup>-1</sup>. Root weight density, root
length density, root surface area density were major factors, which increased the
proportion of particles in sediment with diameter of below 50 μm, therefore decreased
sediment resuspension against hydraulic disturbance; the root system also enriched total
nitrogen in sediment and absorbed phosphorus from sediment. These five kinds of plants in
terrestrial-aquatic transverse actually repressed nitrogen and phosphorus release from
sediment in two ways mentioned above, Paspalum distichum L. and Iris pseudacorus L.
possessed the best effect due to their developed root system, followed by Leersia
hexandra Swartz and Hydrocotyle vulgaris, and Ludwigia peploides had the least effect.
© 2017, Science Press. All right reserved.
Number of references:22
Main heading:Sediments
Controlled terms:Nitrogen - Phosphorus - Plants (botany)
Uncontrolled terms:Inhibitory effect - Littoral zone - Nitrogen and phosphorus - Root
length density - Root surface area - Root system - Sediment re suspensions - Total
phosphorus
Classification code:483 Soil Mechanics and Foundations - 804 Chemical Products
Generally
Numerical data indexing:Mass_Density 2.00e-05kg/m3, Mass_Density 3.00e-05kg/m3,
Mass_Density 4.00e-04kg/m3, Size 5.00e-05m
DOI:10.13227/j.hjkx.201604237
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 96>
Accession number:20171003416414
Title:Fast start-up of SBAF System Assisted CANON process and the microbial analysis
Authors:Liu, Zhu-Han (1); Yue, Xiu (2); Yu, Guang-Ping (2); Jin, La-Hua (1); Tang, Jia-Li
(2); Ji, Shi-Ming (2)
Author affiliation:(1) School of Environment, Jinan University, Guangzhou; 510632, China;
(2) Shenyang Institute of Automation in Guangzhou, Chinese Academy of Sciences,
Guangzhou; 511458, China
Corresponding author:Jin, La-Hua(profjin@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:253-259
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Long period start-up is one of the main restraining factors of the single-stage
completely autotrophic nitrogen removal over nitrite (CANON) process. This study
investigated the fast start-up of the CANON process initiated by a submerged biological
aerated filter (SBAF) method. With conventional activated sludge from the secondary
sedimentation tank of municipal waste water treatment plants as the seed sludge, the
CANON process was successfully started up after the acclimation of sludge microorganisms
for 48 days under the experimental conditions of (30±2)℃,organic carbon free
and controlled dissolved oxygen(stage I: 0.3-0.5mg·L<sup>-1</sup>; stage II-IV:
0.1-0.2mg·L<sup>-1</sup>), with the maximum removal rates of ammonia nitrogen and
total nitrogen achieved at 99.9% and 86.5%, respectively. The population structure
characteristics of microorganisms in the system were studied using high-throughput
sequencing of 16S rDNA amplicon. The results demonstrated that the two dominant microbial
strains in the system were Proteobacteria and Planctomycetes, accounting for 26.6% and
17.8%, respectively. The major contributors of nitrogen removal were Nitrosomonas in
β-Proteobacteria and Candidatus brocadia in Brocadiae. Through the above
experiments, it was revealed that the investigated SBAF based CANON possesses had the
advantages of fast start-up, efficient biological nitrogen removal and stable operation
process. © 2017, Science Press. All right reserved.
Number of references:24
Main heading:Activated sludge process
Controlled terms:Ammonia - Carbon - Dissolved oxygen - Microorganisms - Nitrogen -
Nitrogen removal - Organic carbon - Seed - Waste treatment - Wastewater treatment -
Water treatment
Uncontrolled terms:16s rDNA sequencing - Ammonia nitrogen - CANON - Microbial populations
- SBAF
Classification code:445.1 Water Treatment Techniques - 452.2 Sewage Treatment - 452.4
Industrial Wastes Treatment and Disposal - 461.9 Biology - 804 Chemical Products
Generally - 821.4 Agricultural Products
Numerical data indexing:Age 1.32e-01yr, Mass_Density 1.00e-04kg/m3 to 2.00e-04kg/m3,
Percentage 1.78e+01%, Percentage 2.66e+01%, Percentage 8.65e+01%, Percentage 9.99e+01%
DOI:10.13227/j.hjkx.201607085
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 97>
Accession number:20171003416392
Title:Fluorescence Spectral Characteristics of Fluorescent Dissolved Organic Matter
(FDOM) in the Surface Sediments from Lihu Lake
Authors:Chen, Jun-Yi (1); Wang, Shu-Hang (1); Jiang, Xia (1); Huang, Xiao-Feng (2); Zhao,
Li (1)
Author affiliation:(1) State Key Laboratory of Environmental Criteria and Risk
Assessment, Chinese Research Academy of Environmental Sciences, Beijing; 100012, China;
(2) Wuxi Taihu Lake Restoration CO., Ltd., Wuxi; 214023, China
Corresponding author:Jiang, Xia(jiangxia@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:70-77
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study investigated the spectral characteristics of fluorescent dissolved
organic matter (FDOM) in sediments of Lihu Lake using three-dimensional excitation-
emission matrix fluorescence spectroscopy (EEMS), and discussed the correlation between
source of FDOM and organic or inorganic nitrogen. The results indicated that the surface
sediments in Lihu Lake consisted of three fluorescence fractions (II), humic-like C1
(240,310/420 nm), C2(260,360/460 nm), and tryptophan-like C3(225,275/340 nm). The total
fluorescence intensity ranged from 49.97 to 159.19 R.U.·g<sup>-1</sup>, and
decreased from east to west with higher values in coast district than in lake center. The
relative proportions of C1, C2, and C3 were 33.63%, 26.87% and 39.49%, respectively. The
fluorescence index (FI), biological origin index (BIX), and humification index (HIX)
ranged from 1.96 to 2.22, 0.69 to 0.94, and 2.62 to 4.39. It indicated that the main
source of FDOM in Lihu Lake was from endogenesis, and mainly derived from microbes, algae
and other newly autochthonous sources. The results illustrated, the fluorescence
intensity had significant correlation with organic and inorganic nitrogen(P<0.01), and
had higher correlation with inorganic nitrogen. © 2017, Science Press. All right
reserved.
Number of references:30
Main heading:Fluorescence
Controlled terms:Amino acids - Biogeochemistry - Biological materials - Dissolution -
Fluorescence spectroscopy - Lakes - Nitrogen - Organic compounds - Sediments - Surficial
sediments
Uncontrolled terms:Correlation analysis - Dissolved organic matters - Excitation-emission
matrix fluorescence spectroscopies - Fluorescence intensities - Fluorescence spectra -
Humification index (HIX) - Spectral characteristics - Surface sediments
Classification code:461.2 Biological Materials and Tissue Engineering - 481.2
Geochemistry - 483 Soil Mechanics and Foundations - 741.1 Light/Optics - 741.3 Optical
Devices and Systems - 802.3 Chemical Operations - 804 Chemical Products Generally -
804.1 Organic Compounds
Numerical data indexing:Percentage 2.69e+01%, Percentage 3.36e+01%, Percentage 3.95e+01%
DOI:10.13227/j.hjkx.201605148
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 98>
Accession number:20171003409552
Title:Nitrogen removal performance of ANAMMOX with different organic carbon sources
Authors:Guan, Yong-Jie (1); Yu, De-Shuang (1); Li, Jin (1); Qi, Pan-Qing (1); Wei, Si-Jia
(1)
Author affiliation:(1) School of Environmental Science and Engineering, Qingdao
University, Qingdao; 266071, China
Corresponding author:Li, Jin(ljin0532@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:654-664
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Anaerobic ammonium oxidation (ANAMMOX) has been regarded as an efficient process
to treat high-strength wastewater without organic carbon source. To investigate the
nitrogen removal performance of ANAMMOX in the presence of organic carbon source can
broaden its application in organic wastewater treatment. In this work, an anaerobic
sequencing batch reactor (ASBR) was used to study the effect of organic carbon source on
ANAMMOX process. The experimental results indicated that the activity of anaerobic
ammonia oxidizing bacteria (AAOB) decreased by 84.2% when 200 mg·L<sup>-1</sup>COD
of glucose was added. When sodium acetate was added, the activity of AAOB was affected
little. Besides, it even promoted the activity with COD less than 120 mg·L<sup>-
1</sup>. The effect of sucrose on ANAMMOX process was similar to that of sodium acetate
and the maximum specific ANAMMOX activity (SAA) increased by 25.0% with 80
mg·L<sup>-1</sup>COD. When citric acid was added, the maximum SAA peaked with 80
mg·L<sup>-1</sup>COD. The order of ANAMMOX promotion resulted from organic carbon
source was sucrose, sodium acetate, citric acid and glucose. With addition of organic
carbon source, nitrate could also be removed through the synergy of ANAMMOX and
denitrification, and the total nitrogen removal efficiency increased. © 2017,
Science Press. All right reserved.
Number of references:27
Main heading:Nitrogen removal
Controlled terms:Ammonia - Bacteria - Batch reactors - Chemical oxygen demand - Citric
acid - Glucose - Nitrogen - Organic carbon - Sodium - Sugar (sucrose) - Wastewater
treatment
Uncontrolled terms:Ammonia oxidizing bacteria - Anaerobic ammonium oxidation - Anaerobic
sequencing batch reactors - ANAMMOX - Organic wastewater treatment - Removal performance
- Specific Anammox activity - Stoichiometric ratio
Classification code:452.4 Industrial Wastes Treatment and Disposal - 549.1 Alkali
Metals - 802.1 Chemical Plants and Equipment - 804 Chemical Products Generally - 822.3
Food Products
Numerical data indexing:Mass_Density 1.20e-01kg/m3, Mass_Density 2.00e-01kg/m3,
Mass_Density 8.00e-02kg/m3, Percentage 2.50e+01%, Percentage 8.42e+01%
DOI:10.13227/j.hjkx.201603179
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 99>
Accession number:20171003409536
Title:Distribution and burial characteristics of nitrogen forms in sediment of Dianchi
Lake during last century
Authors:Wu, Ya-Lin (1); Li, Shuai-Dong (1); Jiang, Jun-Wu (1); Shen, Yin-Yin (1); Huang,
Chang-Chun (1, 2, 3); Huang, Tao (1); Yang, Hao (1); Yu, Yan-Hong (4); Luo, Yu (4)
Author affiliation:(1) College of Geography Science, Nanjing Normal University, Nanjing;
210023, China; (2) Jiangsu Center for Collaborative Innovation in Geographical
Information Resource Development and Application, Nanjing; 210023, China; (3) Jiangsu
Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing; 210023,
China; (4) Kunming China International Research Center for Plateau Lake, Yunnan Institute
of Environmental Science, Kunming; 650000, China
Corresponding author:Huang, Chang-Chun(huangchangchun@njnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:517-526
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to analyze the composition, distribution and burial characteristics of
nitrogen in sediments of Dianchi Lake in the last hundred years, 6 sediment cores were
sampled in July 2014 to determine the contents of different nitrogen species and
sedimentary age sequence. The integrated results demonstrated a high content of total
nitrogen in sediments ranging from 1 263.68-7 155.17 mg·kg<sup>-1</sup>. The
contents of nitrate nitrogen and ammonium nitrogen were low, which were 10.00-144.00
mg·kg<sup>-1</sup>and 9.20-146.50 mg·kg<sup>-1</sup>, respectively. Organic
nitrogen was the main component in the sediments, ranging from 255.80 to 5 644.25
mg·kg<sup>-1</sup>, composing a large average percentage of 91.26%. In addition,
the nitrogen pollution of sediment in Dianchi Lake has reached a high level and is
becoming serious since 1970s, which surged in the late 1990s. The spatial difference of
total nitrogen was obvious, with comparably the most in the south, less in the north and
least in the center. The average deposition rate was changing from 0.092 g·
(cm<sup>2</sup>·a)<sup>-1</sup>to 0.187 g·(cm<sup>2</sup>·a)<sup>-
1</sup>in the last 100 years and increased first, then declined, finally showed a slight
upward trend over time. The burial rate of total nitrogen in sediment increased over time
and almost grew up straightly after 1990, which decreased from the south to the north of
Dianchi Lake in space. It was estimated that the reserves of total nitrogen, organic
nitrogen, nitrate nitrogen, ammonium nitrogen in the sediment were 92 139.15 t, 86 745.62
t, 2 464.16 t, 2 929.37 t, respectively, from 1900 to 2014. © 2017, Science Press.
All right reserved.
Number of references:33
Main heading:Nitrogen
Controlled terms:Deposition rates - Lakes - Nitrates - Pollution - Sediments
Uncontrolled terms:Ammonium nitrogen - Dianchi lakes - Nitrate nitrogen - Nitrogen
pollution - Nitrogen species - Organic nitrogen - Spatial differences - Total nitrogen
Classification code:483 Soil Mechanics and Foundations - 804 Chemical Products
Generally - 804.2 Inorganic Compounds
Numerical data indexing:Age 1.00e+02yr, Percentage 9.13e+01%
DOI:10.13227/j.hjkx.201605232
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 100>
Accession number:20172603861000
Title:Non-CO<inf>2</inf>Greenhouse Gas Release from Different Biological Wastewater
Treatment Processes
Authors:Li, Hui-Juan (1); Peng, Dang-Cong (1); Liu, Wen-Bo (1); Yao, Qian (1); Zhuo, Yang
(1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1640-1646
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Methane (CH<inf>4</inf>) and nitrous oxide (N<inf>2</inf>O) are two of the most
important non-CO<inf>2</inf>greenhouse gases. And municipal sewage treatment plant is an
important anthropogenic source of CH<inf>4</inf>and N<inf>2</inf>O. Therefore, it is
essential to measure the production and emission of CH<inf>4</inf>and N<inf>2</inf>O
during biological wastewater treatment process. The surface emission flux isolation
chamber was employed to collect the gas sample from the Xi'an No.3 WWTP (the Orbal
oxidation ditch process) and Xi'an NO.4 WWTP (A/A/O process) to determine the contents of
methane and nitrous oxide. And the effects of temperature and dissolved oxygen
concentration on non-CO<inf>2</inf>greenhouse gases emission from Xi'an NO.4 WWTP were
discussed. The results showed that methane and nitrous oxide emission factors from No.3
WWTP were 1 181 mg CH<inf>4</inf>per m<sup>3</sup>influent and 36.20 mg N<inf>2</inf>O
per m<sup>3</sup>influent, respectively while those from the No.4 WWTP were 209 mg
CH<inf>4</inf>per m<sup>3</sup>influent and 54.64 mg N<inf>2</inf>O per
m<sup>3</sup>influent. In addition, the important influencing factors which affected
methane and nitrous oxide emission were temperature, aeration strategy, DO, nitrite
oxidation rate and specific methanogenic activity. © 2017, Science Press. All right
reserved.
Number of references:39
Main heading:Biological water treatment
Controlled terms:Bioremediation - Carbon dioxide - Dissolved oxygen - Greenhouse gases -
Methane - Nitrogen oxides - Oxidation - Sewage lagoons - Sewage treatment plants -
Temperature - Wastewater treatment
Uncontrolled terms:A/A/O - Biological treatment - Biological wastewater treatment process
- Dissolved oxygen concentrations - Municipal sewage treatment plant - Nitrous oxide -
Oxidation ditch - Specific methanogenic activity
Classification code:445.1 Water Treatment Techniques - 451.1 Air Pollution Sources -
452.2 Sewage Treatment - 452.4 Industrial Wastes Treatment and Disposal - 454.2
Environmental Impact and Protection - 641.1 Thermodynamics - 802.2 Chemical Reactions -
804.1 Organic Compounds - 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201610122
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 101>
Accession number:20172603860977
Title:Efficacy of PhoslockⓇ on the Reduction of Sediment Phosphorus Release in West
Lake, Hangzhou, China
Authors:Zhu, Guang-Wei (1); Li, Jing (1, 2); Zhu, Meng-Yuan (1); Gong, Zhi-Jun (1); Xu,
Hai (1); Yang, Gui-Jun (2); Zhang, Yun-Lin (1); Qin, Bo-Qiang (1)
Author affiliation:(1) State Key Laboratory of Lake Environment and Science, Nanjing
Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing; 210008,
China; (2) College of Environmental and Civil Engineering, Jiangnan University, Wuxi;
214122, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1451-1459
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Famous as the world cultural heritage, West Lake in Hangzhou city has plenty of
soft sediments with high organic matter content. To search the countermeasures for
internal phosphorus release reduction from the sediment, the sediment core incubation was
conducted to understand the efficacy of PhoslockⓇ on internal phosphorus release in
spring, summer and winter, respectively. The results showed that the internal phosphorus
release fluxes in winter and spring were relatively low, with averaged values in the
entire lake of 0.13 mg·(m<sup>2</sup>·d)<sup>-1</sup>and 0.29 mg·
(m<sup>2</sup>·d)<sup>-1</sup>, respectively, while the release flux was 3.29
mg·(m<sup>2</sup>·d)<sup>-1</sup>in summer, more than ten times higher than
those in spring and winter. It was estimated that 23.7 kg of phosphorus could be released
from sediment in the entire lake every day in summer. Spatially, the phosphorus release
flux was related to organic matter contents in sediments, but not the phosphorus or
bioavailable phosphorus contents in sediments in West Lake. With PhoslockⓇ added at
the rate of 630 g·m<sup>-2</sup>, sediment phosphorus release was successfully
controlled, which reduced the phosphorus concentration in the lake water to less than
0.010 mg·L<sup>-1</sup>. Especially during summer time, the sediment phosphorus
release was reduced by 98% after PhoslockⓇ application. The research suggested that
PhoslockⓇ is powerful for phosphorus control even for sediments with high organic
matter content, which could be considered in ecological restoration of WEst Lake. ©
2017, Science Press. All right reserved.
Number of references:31
Main heading:Phosphorus
Controlled terms:Biogeochemistry - Biological materials - Lakes - Organic compounds -
Sediments
Uncontrolled terms:Bioavailable phosphorus - Ecological restoration - Internal loading -
Organic matter content - Phosphorus concentration - Phosphorus release - Soft sediments -
World cultural heritages
Classification code:461.2 Biological Materials and Tissue Engineering - 481.2
Geochemistry - 483 Soil Mechanics and Foundations - 804 Chemical Products Generally -
804.1 Organic Compounds
Numerical data indexing:Mass 2.37e+01kg, Mass_Density 1.00e-05kg/m3, Percentage 9.80e+01%
DOI:10.13227/j.hjkx.201609123
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 102>
Accession number:20172603861003
Title:Dynamic Differences of Uptake and Translocation of Exogenous Selenium by Different
Crops and Its Mechanism
Authors:Peng, Qin (1); Li, Zhe (1); Liang, Dong-Li (1, 2); Wang, Meng-Ke (1); Guo, Lu (1)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) Key Laboratory of Plant Nutrition and the Agri-
environment in Northwest China, Ministry of Agriculture, Yangling; 712100, China
Corresponding author:Liang, Dong-Li(dlliang@nwsuaf.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1667-1674
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The study aimed to find out the dynamic changes of selenium (Se) uptake with
crops growing and to provide better understanding on the translocation of Se in soil-
plant system. Pot experiments and laboratory analysis were carried out, in which 6 crops
were planted for eight weeks in the soils treated with selenite and selenate. The results
showed that there was a significant difference in the plant dynamic uptake pattern for
selenite and selenate. Se concentration in shoots and roots of all tested plants
continuously declined with growth since the third week after planting for selenate
treatment; while Se concentration in roots of plants gradually increased with the growth,
and that for shoots firstly increased and then leveled off or decreased for selenite
treatment. Crops could accumulate Se throughout the whole growing period, while 80% of
the Se in plants was uptaken in the first 6 weeks. Among the 6 tested plants, the Se
concentration in the shoots and roots of mustard was the highest, followed by the shoots
of wheat for selenate treatment. The Se concentration in shoots of carrot was the
highest, while that in roots was the lowest for selenite treatment. For the same Se
treatment, the Se concentrations in both roots and shoots of broccoli, purple cabbage and
flowering Chinese cabbage were similar. Broccoli, purple cabbage, flowering Chinese
cabbage, mustard and wheat had higher translocation ability to transport selenate than
selenite from roots to shoots, whereas carrot had the same ability for translocating
selenite and selenate. Biological dilution affected the dynamic changes of the Se content
in crops, especially for selenate treatment, and a significant negative correlation
between Se concentration of plants and their biomass further verified this. However, the
changes of biomass of plants with growing period couldn't explain the total inverse
dynamic uptake pattern for selenite and selenate. A significant positive correlation was
observed between Se accumulations amount in six crops with available Se changes in soil
during the corresponding growing period for selenate treatment, while no such correlation
was found for selenite treatment. Se accumulation in crops grown on selenite-treated soil
accounted for 0.5%-18.1% of soil available Se, whereas that in selenate treatment was
1.1-4.5 times of soil available Se except for carrot. In conclusion, the dynamic changes
of Se uptake with crop growth were the comprehensive results of the absorption and
transport capacity of crops, Se availability in soil and biological dilution. It should
be considered as a whole in the selenium biofortification. © 2017, Science Press.
All right reserved.
Number of references:39
Main heading:Soils
Controlled terms:Crops - Ecology - Selenium - Selenium compounds
Uncontrolled terms:Flowering chinese cabbages - Laboratory analysis - Negative
correlation - Positive correlations - Selenate - Selenite - Translocation - Transport
capacity
Classification code:454.3 Ecology and Ecosystems - 483.1 Soils and Soil Mechanics -
549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 821.4
Agricultural Products
Numerical data indexing:Age 1.15e-01yr, Percentage 5.00e-01% to 1.81e+01%, Percentage
8.00e+01%
DOI:10.13227/j.hjkx.201607205
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 103>
Accession number:20172703864538
Title:Adsorption Characteristics of Copper in Water by the Porous Biomorph-Genetic
Composite of HAP/C with Eucalyptus Wood Template
Authors:Li, Chao (1, 2); Zhu, Zong-Qiang (1, 2); Cao, Shuang (3); Zhu, Yi-Nian (1, 2);
Tan, Xiao (1, 2); Ding, Hui (1, 2)
Author affiliation:(1) Collaborative Innovation Center for Water Pollution Control and
Water Safety in Karst Area, Guilin University of Technology, Guilin; 541004, China; (2)
Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin
University of Technology, Guilin; 541004, China; (3) Henan Electric Power Survey &
Design Institute, Zhengzhou; 450007, China
Corresponding author:Zhu, Zong-Qiang(zhuzongqiang@glut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1074-1083
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The specific characteristics and mechanism of adsorption of Cu(II) were studied
by using HAP/C composite (PBGC-HAP/C) as adsorbent, and using pH value of the solution
system, initial concentration of Cu(II) and particle size of the material as influential
factors. The results showed that when the solution was weak acid (pH=5), the adsorption
effect was the best; the increase of the initial concentration of the reaction system was
not conducive to the enhancement of the adsorption effect; and the decrease of the
particle size of the adsorbent facilitated the adsorption process. The pseudo-second-
order kinetic model could accurately describe the adsorption process, and the calculated
adsorption capacity (0.99, 1.93, 4.03 mg·g<sup>-1</sup>) was close to the
experimental measured values (0.99, 1.93, 4.05mg·g<sup>-1</sup>); Langmuir model
could fit the adsorption process very well, which indicated that adsorption was monolayer
adsorption and the increase of temperature was conducive to adsorption. The
thermodynamics test results of ΔG<sup>θ</sup><0,
ΔS<sup>θ</sup>>0 and ΔH<sup>θ</sup>>0 showed that the
adsorption process was endothermic and spontaneous. Through comparative analysis of the
SEM, EDS, XRD and FTIR of materials before and after adsorption, the results indicated
that the chemical complexation reaction of Cu(II) with the oxygen functional groups on
the surface of PBGC-HAP/C was the main purification mechanism, which was accompanied with
physical adsorption, electrostatic adsorption and ion exchange. © 2017, Science
Press. All right reserved.
Number of references:44
Main heading:Adsorption
Controlled terms:Chemical analysis - Complexation - Dynamics - Hydroxyapatite - Ion
exchange - Particle size - Thermodynamics
Uncontrolled terms:Adsorption characteristic - Adsorption mechanism - Characteristics and
mechanisms - Complexation reaction - Electrostatic adsorption - Oxygen functional groups
- Pseudo-second-order kinetic models - Purification mechanisms
Classification code:641.1 Thermodynamics - 802.2 Chemical Reactions - 802.3 Chemical
Operations - 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201608093
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 104>
Accession number:20172703864558
Title:Effects of Simulated Acid Rain on Soil Respiration and Heterotrophic Respiration in
a Secondary Forest
Authors:Chen, Shu-Tao (1, 2); Sun, Lu (2); Sang, Lin (2); Hu, Zheng-Hua (2)
Author affiliation:(1) Jiangsu Collaborative Innovation Center of Atmospheric Environment
and Equipment Technology (CICAEET), Nanjing University of Information Science and
Technology, Nanjing; 210044, China; (2) School of Applied Meteorology, Nanjing University
of Information Science and Technology, Nanjing; 210044, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1235-1244
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to investigate the effects of simulated acid rain on soil respiration
and heterotrophic respiration in a secondary forest, a field experiment was carried out.
A split-plot experiment was arranged in field. There were 4 blocks; each block had two
main plots which were trenched and un-trenched plots. In each main plot, 4 simulated acid
rain treatments of control (CK), pH 4.0 (A1), pH 3.0 (A2), and pH 2.0 (A3) were randomly
assigned. Soil respiration in the un-trenched plots and heterotrophic respiration in the
trenched plots were measured weekly. Soil temperature and moisture at a depth of 5 cm
were measured during the respiration measurements. The results indicated that different
simulated acid rain treatments exhibited similar seasonal patterns of soil respiration
and heterotrophic respiration. Heterotrophic respiration in the trenched plots was
significantly lower than soil respiration in the un-trenched plots. The annual mean soil
respiration rates for the CK, A1, A2, and A3 treatments in the un-trenched plots were
(2.47±0.31), (2.52±0.22), (2.38±0.17), and (2.43±0.22)
μmol·(m<sup>2</sup>·s)<sup>-1</sup>, respectively, while the annual mean
heterotrophic respiration rates for the 4 treatments in the trenched plots were
(1.55±0.10), (1.65±0.22), (1.77±0.08), and (1.78±0.27)
μmol·(m<sup>2</sup>·s)<sup>-1</sup>, respectively. ANOVA showed that
simulated acid rain had no significant effects on soil respiration in the un-trenched
plots and heterotrophic respiration in the trenched plots. Regression analysis suggested
that there was a significant linear regression relationship between soil respiration and
heterotrophic respiration. Simulated acid rain significantly (P<0.001) decreased the
ratio of soil respiration to heterotrophic respiration. Soil temperature was the main
controlling factor regulating the seasonal patterns of soil respiration and heterotrophic
respiration for each of the SAR treatment, while soil moisture had no significant effects
on the seasonal variability in soil respiration and heterotrophic respiration. ©
2017, Science Press. All right reserved.
Number of references:40
Main heading:Soil surveys
Controlled terms:Acid rain - Forestry - Moisture - Rain - Regression analysis - Soil
moisture - Soils - Temperature
Uncontrolled terms:Heterotrophic respiration - Secondary forests - Simulated acid rains -
Soil respiration - Soil temperature
Classification code:443.3 Precipitation - 451.1 Air Pollution Sources - 483.1 Soils
and Soil Mechanics - 641.1 Thermodynamics - 922.2 Mathematical Statistics
Numerical data indexing:Size 5.00e-02m
DOI:10.13227/j.hjkx.201608206
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 105>
Accession number:20172703864534
Title:Effects of Pretreatment on Hydraulic Irreversible Membrane Fouling During
Ultrafiltration Short Process: A Pilot Study
Authors:Yang, Hai-Yan (1, 2); Xing, Jia-Jian (2); Wang, Can (3); Sun, Guo-Sheng (1);
Zhao, Yan (1); Liang, Heng (2); Xu, Ye-Qin (1); Li, Gui-Bai (2)
Author affiliation:(1) Guangdong GDH Water Co., Ltd., Shenzhen; 518021, China; (2) School
of Environmental and Municipal Engineering, Harbin Institute of Technology, Harbin;
150090, China; (3) School of Environmental and Municipal Engineering, Qingdao University
of Technology, Qingdao; 266033, China
Corresponding author:Li, Gui-Bai(liguibai@vip.163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1046-1053
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Pilot-scale performances for ultrafiltration of Dongjiang river water without
and with micro-coagulation and coagulation-adsorption-sedimentation pretreatments were
conducted to investigate the effects of pretreatments on hydraulic irreversible fouling
of ultrafiltration short processes. Scanning electron microscope (SEM) imaging, high
performance size exclusion chromatography (HPSEC) and fluorescence excitation-emission
matrix (EEM) were employed to identify foulants responsible for irreversible fouling
during ultrafiltration with and without pretreatments. The results showed that the
hydraulic irreversible fouling rate was 0.16 kPa·d<sup>-1</sup>with micro-
coagulation pretreatment at 10 L·(m<sup>2</sup>·h)<sup>-1</sup>, while the
rate without pretreatment was 0.32 kPa·d<sup>-1</sup>at the same flux. Meanwhile,
the fouling rate with coagulation-adsorption-sedimentation pretreatment was almost zero
at the same flux. Furthermore, when the flux increased to 17 L·
(m<sup>2</sup>·h)<sup>-1</sup>, the irreversible fouling was not observable with
coagulation-adsorption-sedimentation pretreatment (backwashing every 24 hours).
Properties of foulants from external membrane and internal membrane after backwashing
showed that the protein-like and fulvic-like substances were responsible for irreversible
fouling in Dongjiang river water. Furthermore, structural alteration of cake layer
resulted in less cake resistance and higher backwash efficiency after micro-coagulation
pretreatment, leading to less irreversible fouling. Coagulation-adsorption-sedimentation
pretreatment decreased irreversible fouling with higher removal efficiency of protein-
like and fulvic substances, which were the foulants responsible for irreversible fouling
during ultrafiltration. Both micro-coagulation and coagulation-adsorption-sedimentation
pretreatments decreased irreversible fouling during ultrafiltration short process. ©
2017, Science Press. All right reserved.
Number of references:24
Main heading:Fouling
Controlled terms:Adsorption - Coagulation - Efficiency - Membrane fouling - Proteins -
Scanning electron microscopy - Sedimentation - Size exclusion chromatography -
Ultrafiltration - Water resources
Uncontrolled terms:Fluorescence excitation emission matrix - High performance size
exclusion chromatography - Irreversible fouling - Low flux - Membrane foulants - Pre-
Treatment - Removal efficiencies - Structural alterations
Classification code:444 Water Resources - 801 Chemistry - 802.3 Chemical Operations -
804.1 Organic Compounds - 913.1 Production Engineering - 951 Materials Science
Numerical data indexing:Time 8.64e+04s
DOI:10.13227/j.hjkx.201608028
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 106>
Accession number:20171003409557
Title:Effect of zero valent iron on the decline of tetracycline resistance genes and
class 1 integrons during thermophilic anaerobic digestion of sludge
Authors:Wei, Xin (1); Xue, Shun-Li (1); Yang, Fan (1); Li, Xiang (1); Liu, Zhen-Hong (1);
Xue, Gang (1); Gao, Pin (1)
Author affiliation:(1) State Environmental Protection Engineering Center for Pollution
Treatment and Control in Textile Industry, College of Environmental Science and
Engineering, Donghua University, Shanghai; 201620, China
Corresponding author:Gao, Pin(pingao@dhu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:697-702
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To investigate the effects of zero valent iron (Fe<sup>0</sup>) on the decline
of antibiotic resistance genes during thermophilic anaerobic digestion of sludge, the
abundances of seven tetracycline resistance genes (TC-ARGs, including tetA, tetC, tetG,
tetM, tetO, tetW, and tetX) and class 1 integron gene (intI1) were quantified by
quantitative PCR (qPCR). Also, the concentrations of volatile fatty acids (VFAs) were
determined. The correlations between the abundances of TC-ARGs and intI1 gene and the
concentrations of VFAs were discussed. The results showed that appropriate dose of
Fe<sup>0</sup>such as 0.10 g·g<sup>-1</sup>VSS could enhance the anaerobic
digestion process of sludge, and the production of total VFAs and acetic acid increased
significantly. The decrease in the abundances of TC-ARGs and intI1 gene was also
enhanced. However, excessive Fe<sup>0</sup>such as 1.17 g·g<sup>-1</sup>VSS could
not further improve the reduction in the abundances of TC-ARGs and intI1 gene, probably
resulted from the occurrence of horizontal gene transfer. The abundances of TC-ARGs
except tetO gene, as well as intI1 gene exhibited significant negative correlation with
the concentration of acetic acid, indicating that acetic acid probably had an enhanced
effect on the decline of TC-ARGs and intI1 gene during thermophilic anaerobic digestion
of sludge. © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Anaerobic digestion
Controlled terms:Acetic acid - Fatty acids - Gene transfer - Genes - Iron - Organic acids
- pH - Polymerase chain reaction - Sludge digestion - Volatile fatty acids
Uncontrolled terms:Anaerobic digestion process - Antibiotic resistance genes - Class 1
integrons - Concentration of acetic acid - Resistance genes - Thermophilic anaerobic
digestion - Volatile fatty acids (VFAs) - Zero-valent iron
Classification code:452.2 Sewage Treatment - 461.2 Biological Materials and Tissue
Engineering - 461.8.1 Genetic Engineering - 545.1 Iron - 801.1 Chemistry, General -
801.2 Biochemistry - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201607235
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 107>
Accession number:20171003416391
Title:Comparisons between seasonal and diurnal patterns of cave air CO<inf>2</inf>and
Control Factors in Jiguan Cave, Henan Province, China
Authors:Zhang, Ping (1, 2, 3); Yang, Yan (1, 2, 3); Sun, Zhe (1, 2, 3); Liang, Sha (1, 2,
3); Zhang, Na (1, 2, 3); Tian, Ning (1, 2, 3); Li, Jian-Cang (4); Ling, Xin-You (4);
Zhang, Zhi-Qin (4)
Author affiliation:(1) Key Laboratory of Eco-Environment in Three Gorges Reservoir
Region, School of Geographical Sciences, Southwest University, Chongqing; 400715, China;
(2) Field Scientific Observation & Research Base of Karst Eco-environments at
Nanchuan in Chongqing, Ministry of Land and Resources of China, Chongqing; 408435, China;
(3) Opening Laboratory of Karst Environment, Southwest University, Chongqing; 400715,
China; (4) Administrative Office of Luoyang Jiguan, Luanchuan; 471500, China
Corresponding author:Yang, Yan(yy2954@gmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:60-69
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Cave air CO<inf>2</inf>makes notable impacts on the deposition and dissolution
of speleothem, affecting the stability of carbonate landscape and comfort of tourist in
show caves. Cave air CO<inf>2</inf>is a key factor of karstification occurrence. Studying
the mechanism of cave air CO<inf>2</inf>variation is important for understanding the
pattern of karstification and cave protection. In order to understand the temporal and
spatial variation characteristics and its possible controlling factors, inside and
outside cave air CO<inf>2</inf>, hydrogeochemical index, temperature, relative humidity
as well as precipitation and tourist amount were observed in the Jiguan Cave, which lies
in the west Henan Province of south-north geographical boundary of China. Nearly five
years monitoring of air CO<inf>2</inf>of Jiguan Cave was carried out from December, 2011
to May, 2016. A diurnal monitoring was performed from 19 May, 2016 to 20 May, 2016. The
results indicated that the cave air CO<inf>2</inf>showed notable spatial and seasonal
variations. ①From the spatial variation, the sites closer to cave entrances,
affected by strong cave ventilation, had lower pCO<inf>2</inf>. In addition, the special
structure of Jiguan Cave and soil air pCO<inf>2</inf>variation, vegetation respiration
and soil microbial activity, which in turn were associated with changes in climate and
environment also contributed to the variation of cave air pCO<inf>2</inf>. ② On a
seasonal scale, cave air CO<inf>2</inf>was higher in summer and lower in winter. This
variation of cave air CO<inf>2</inf>was mainly influenced by tourism activity as well as
karstification. ③Tourist amount was the mainly factor that influenced the variation
of cave air CO<inf>2</inf>on a daily scale. Because of tourism activity, cave air
CO<inf>2</inf>was increased, and also cave environment was disturbed. All of these
intimidate the better conservation of cave environment. © 2017, Science Press. All
right reserved.
Number of references:41
Main heading:Carbon dioxide
Controlled terms:Caves - Humidity control
Uncontrolled terms:Control factors - Controlling factors - Diurnal variation - Seasonal
variation - Soil microbial activities - Spatial variations - Temporal and spatial
variation - Tourism activities
Classification code:481.1 Geology - 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201606211
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 108>
Accession number:20171003409550
Title:Characteristics and mechanism of hybrid ozonation-coagulation process in wastewater
reclamation
Authors:Hou, Rui (1); Jin, Xin (1); Jin, Peng-Kang (1); Wang, Xiao-Chang (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Corresponding author:Jin, Peng-Kang(pkjin@hotmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:640-646
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Because of the limited dissolved organic matter removal efficiency in
conventional pre-ozonation-coagulation process, the hybrid ozonation-coagulation (HOC)
process was developed for wastewater reclamation in this study. In this process,
coagulation and ozonation could synchronize within a single unit. Compared with the pre-
ozonation-coagulation process and traditional coagulation process at the same coagulants
dosage, the HOC process exhibited higher treatment efficiency, especially better organic
matter removal performance at each pH value, which were 37.96% and 39.66%, respectively.
In order to obtain the removal mechanism of dissolved organic matters by HOC process,
ozone decomposition at two pH values either with or without
AlCl<inf>3</inf>·6H<inf>2</inf>O was monitored in this study. The results showed
that higher pH and the addition of coagulant could accelerate ozone decay. In addition,
para-chlorobenzoic acid (p-CBA) was chosen as the hydroxyl radical (·OH) probe
compound to indirectly calculate the ·OH exposure. The results revealed that the
HOC process was involved in ·OH reaction and coagulant could promote ozone
decomposition due to its enhancing effect on ·OH production during the ozonation
process. Furthermore, the ozone depletion occurred more quickly at high pH due to its
reaction with hydroxide ions (OH<sup>-</sup>), leading to the formation of ·OH
through a series of chain reactions. Moreover, the effects of tert-butanol, a well-known
·OH inhibitor on ozone decay and p-CBA decomposition were also investigated. The
results indicated that ozone depletion and p-CBA decomposition were significantly
inhibited by tert-butanol, which further proved that ozone was decomposed into ·OH
radicals through chain reactions. In the HOC process, Al-based coagulants and hydrolyzed
products could act as catalysts to enhance ozone decomposition into ·OH which is a
powerful oxidant to improve the organics removal efficiency. © 2017, Science Press.
All right reserved.
Number of references:51
Main heading:Wastewater reclamation
Controlled terms:Biogeochemistry - Biological materials - Chains - Chemicals removal
(water treatment) - Coagulation - Efficiency - Free radicals - Organic compounds - Ozone
- Ozone layer - Ozone water treatment - Ozonization - pH - Wastewater treatment
Uncontrolled terms:Characteristics and mechanisms - Coagulation process - Dissolved
organic matters - Hydrolyzed products - Hydroxyl radicals - Organic matter removal -
Ozone decomposition - Treatment efficiency
Classification code:452.4 Industrial Wastes Treatment and Disposal - 461.2 Biological
Materials and Tissue Engineering - 602.1 Mechanical Drives - 801.1 Chemistry, General -
801.2 Biochemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804
Chemical Products Generally - 804.1 Organic Compounds - 913.1 Production Engineering
Numerical data indexing:Percentage 3.80e+01%, Percentage 3.97e+01%
DOI:10.13227/j.hjkx.201607195
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 109>
Accession number:20171003409524
Title:Atmospheric dry deposition fluxes and seasonal variations of particulate matter and
lead in urban Beijing
Authors:Yao, Li (1); Liu, Jin (1, 2); Pan, Yue-Peng (1); Tian, Shi-Li (1); Wang, Zhen-Bo
(3); Wei, Xia (4); Zhang, Guo-Zhong (1); Zhou, Bao-Hua (2); Wang, Yue-Si (1)
Author affiliation:(1) State Key Laboratory of Atmospheric Boundary Layer Physics and
Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences,
Beijing; 100029, China; (2) School of Resources and Environment, University of Ji'nan,
Ji'nan; 250022, China; (3) Institute of Geographic Sciences and Natural Resources
Research, Chinese Academy of Sciences, Beijing; 100101, China; (4) Yunnan Meteorological
Bureau, Kunming; 650000, China
Corresponding author:Pan, Yue-Peng(panyuepeng@mail.iap.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:423-428
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To investigate the dry deposition pattern of particulate matter and lead in
urban Beijing, dry deposited particles were collected based on a surrogate surface
between December 2013 and November 2014 and subjected to elemental analysis by using
microwave digestion and inductively coupled plasma mass spectrometry. The results showed
that dry deposition fluxes of particle mass and total lead were 0.84 t·
(hm<sup>2</sup>·a)<sup>-1</sup>and 7.56 mg·(m<sup>2</sup>·a)<sup>-
1</sup>, respectively, with a seasonal trend of spring>winter>autumn~summer,
exhibiting a similar temporal pattern to that of coarse particles. In addition, dry
deposition flux of water-soluble lead was 3.14 mg·(m<sup>2</sup>·a)<sup>-
1</sup>. It was found that the ratio of soluble fraction to total lead in dry deposited
particles reached up to 43%, coinciding with a seasonal variation of ambient sulfur
dioxide. The findings highlighted the anthropogenic imprints on the dry deposition flux
of particles and heavy metals as well as the solubility of lead. This study also provides
a first-hand dataset that can be used to assess ecological and environmental impacts of
dry deposited lead, and an up-to-date scientific basis for the crafting abatement
strategies to further reduce emission of heavy metals in China. © 2017, Science
Press. All right reserved.
Number of references:26
Main heading:Particles (particulate matter)
Controlled terms:Air pollution - Deposition - Environmental impact - Heavy metals - Lead
- Mass spectrometry - Solubility - Sulfur dioxide
Uncontrolled terms:Atmospheric dry deposition - Dry deposition - Dry deposition fluxes -
Microwave digestion - Particulate Matter - Seasonal variation - Similar temporal patterns
- Surrogate surfaces
Classification code:451 Air Pollution - 454.2 Environmental Impact and Protection - 531
Metallurgy and Metallography - 546.1 Lead and Alloys - 801 Chemistry - 801.4 Physical
Chemistry - 802.3 Chemical Operations - 804.2 Inorganic Compounds - 951 Materials
Science
Numerical data indexing:Percentage 4.30e+01%
DOI:10.13227/j.hjkx.201601132
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 110>
Accession number:20171003409525
Title:Pollution characteristics of heavy metals in PM<inf>2.5</inf>and their human health
risks among the coastal city group along western Taiwan Straits Region, China
Authors:Chen, Yan-Ting (1, 2); Du, Wen-Jiao (1, 2, 3); Chen, Jin-Sheng (1, 2); Xu, Ling-
Ling (1, 2)
Author affiliation:(1) Center for Excellence in Urban Atmospheric Environment, Institute
of Urban Environment, Chinese Academy of Sciences, Xiamen; 361021, China; (2) Key
Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese
Academy of Sciences, Xiamen; 361021, China; (3) University of Chinese Academy of
Sciences, Beijing; 100049, China
Corresponding author:Chen, Jin-Sheng(jschen@iue.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:429-437
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:PM<inf>2.5</inf>samples were collected from 11 sampling sites in the coastal
city group along western Taiwan Straits region, China, and these heavy metal elements
(Zn, Cu, Pb, Ni, Cr, As) were detected using particle-induced X-ray emission (PIXE)
method. The pollution characteristics, enrichment factors and source apportionment of
heavy metals in PM<inf>2.5</inf>were analyzed, and furthermore, their human health risks
were determined. The result showed concentration distribution was obviously different
between PM<inf>2.5</inf>and heavy metals in the city group, for the main sources (e.g.
construction dust and ground dust) for PM<inf>2.5</inf>were not the main contribution to
these heavy metals. The enrichment factors of Zn, Cu, Pb, Mn, Ni, Cr, As exceeded 10,
which suggested these metals were enriched and significantly impacted by anthropogenic
pollution. Three main groups of heavy metals in PM<inf>2.5</inf>were identified by
principal component analysis (PCA-MLR), such as coal combustion and traffic emissions
(70.59%), multiple sources (coal and oil combustion, pyrometallurgical process, 17.55%)
and other industry (11.86%). The risk levels for carcinogenic heavy metals (Ni, Cr, As)
and non-carcinogenic heavy metals (Zn, Cu, Pb, Mn) were lower than the average level of
risk acceptance (10<sup>-6</sup>), which suggested these heavy metals did not cause harm
to human health in these cities. © 2017, Science Press. All right reserved.
Number of references:31
Main heading:Copper
Controlled terms:Air pollution - Coal combustion - Coal industry - Dust - Health - Health
risks - Heavy metals - Ion beams - Lead - Manganese - Nickel - Pollution - Principal
component analysis - Pyrometallurgy - Risk assessment - Trace elements - Zinc
Uncontrolled terms:Anthropogenic pollution - Concentration distributions - Enrichment
factors - Human health - Particle induced X-ray emission - Pyro-metallurgical process -
Taiwan Straits - Trace heavy metals
Classification code:451 Air Pollution - 451.1 Air Pollution Sources - 461.6 Medicine
and Pharmacology - 461.7 Health Care - 503 Mines and Mining, Coal - 521 Fuel
Combustion and Flame Research - 524 Solid Fuels - 531 Metallurgy and Metallography -
531.1 Metallurgy - 543.2 Manganese and Alloys - 544.1 Copper - 546.1 Lead and Alloys
- 546.3 Zinc and Alloys - 548.1 Nickel - 914.1 Accidents and Accident Prevention -
922.2 Mathematical Statistics - 932.1 High Energy Physics
Numerical data indexing:Percentage 1.19e+01%, Percentage 1.76e+01%, Percentage 7.06e+01%
DOI:10.13227/j.hjkx.201606077
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 111>
Accession number:20171003416406
Title:Effects of UV radiation on the coagulation process of kaolin and involved
mechanisms
Authors:Wang, Wen-Dong (1, 2); Wang, Chang-Xin (1); Liu, Hui (1); Han, Yu (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China; (2) Department of
Environmental Technology and Ecology, Yangtze Delta Region Institute of Tsinghua
University, Jiaxing; 314006, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:188-194
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Kaolin commonly exists in water, and it has an important impact on the water
treatment processes and contaminants'migration and transformation. In this study, PAC was
used as flocculating agent to systematically investigate the effects of UV radiation on
the coagulation process of kaolin by jar test. The results showed that under neutral and
acidic conditions, UV radiation could promote the coagulation process of kaolin
suspension. When the solution pH, coagulant dosage and irradiation time were 7.0, 30
mg·L<sup>-1</sup>and 2.0 h, respectively, the kaolin remove rate of effluent after
coagulation increased from 81.05% to 93.90% by using UV radiation. This might be related
to the decrease of -OH stretching vibration absorption peak and the enhancement of Si-O
stretching vibration absorption peak and Si-O bending vibration absorption peak after UV
radiation, so that the number of the active spot(-OH)on kaolin surface declined. These
changes might lead to decrease of the negative charge on kaolin surface, which promoted
kaolin suspension to precipitate in coagulation process. However, under alkaline
conditions, its settlement performance was slightly lower than the water samples without
ultraviolet radiation treatment. © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Chemical water treatment
Controlled terms:Alkalinity - Coagulation - Effluents - Kaolin - Radiation - Radiation
effects - Stretching - Ultraviolet radiation - Water treatment - Zeta potential
Uncontrolled terms:Alkaline conditions - Coagulation process - Flocculating agents -
Fourier transform infra reds - Kaolin suspensions - OH stretching vibrations - Stretching
vibrations - Water treatment process
Classification code:445.1 Water Treatment Techniques - 452.3 Industrial Wastes - 482.2
Minerals - 535.2 Metal Forming - 741.1 Light/Optics - 801.1 Chemistry, General - 801.3
Colloid Chemistry - 802.3 Chemical Operations
Numerical data indexing:Mass_Density 3.00e-02kg/m3, Percentage 8.10e+01% to 9.39e+01%,
Time 7.20e+03s
DOI:10.13227/j.hjkx.201606114
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 112>
Accession number:20171003409572
Title:Effects of nitrogen application on selenium uptake, translocation and distribution
in winter wheat
Authors:Chen, Yu-Peng (1, 3); Peng, Qin (1); Liang, Dong-Li (1, 2); Song, Wei-Wei (1);
Lei, Ling-Ming (1); Yu, Da-Song (1)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) Key Laboratory of Plant Nutrition and the Agri-
environment in Northwest China, Ministry of Agriculture, Yangling; 712100, China; (3)
College of Urban and Rural Construction, Shanxi Agricultural University, Taigu; 030801,
China
Corresponding author:Liang, Dong-Li(dongliliang2005@yahoo.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:825-831
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to better understand the effects of nitrogen application on
accumulation, translocation and distribution of selenium in winter wheat and to provide
theoretical reference for reasonable nitrogen application and increasing selenium content
of grains. A pot experiment was carried out under greenhouse conditions with Se1 (0.74
mg·kg<sup>-1</sup>) or Se2 (2.60 mg·kg<sup>-1</sup>) levels of selenium,
and each Se treatment was supplied with N1 (100 mg·kg<sup>-1</sup>) or N2 (200
mg·kg<sup>-1</sup>) levels of nitrogen, respectively. Selenium concentrations and
biomass amounts of different parts of wheat were determined at jointing and maturity
stage. The results showed that grain yield increased with increasing nitrogen levels by
13.2% and 24.0% in Se1 and Se2 treatment, respectively. Regardless of N rate, Se
concentration of wheat increased with raising Se amended rate (P<0.01). Increasing
nitrogen application could promote Se uptake of root and thus increase the selenium
concentration of wheat grains and leaves, which was greater in Se1 treatment than in Se2
treatments. Se concentrations in wheat grain increased by 22.6% and 12.1% with the
increasing N application rate in low and high Se treatment, respectively. The
distribution ratios of Se in each organ ranked the same as BCFs, following the order of
leaf>grain>glume>root. Increasing N fertilization increased the distribution
ratio of Se in grains by 11.1% and 25.9% in low and high selenate treatments,
respectively. High nitrogen fertilization could promote uptake and translocation of Se in
wheat under low Se conditions, and improve Se use efficiency as well in the agricultural
production. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Grain (agricultural product)
Controlled terms:Agriculture - Crops - Nitrogen - Nitrogen fertilizers - Selenium -
Selenium compounds - Transportation
Uncontrolled terms:Accumulation - Agricultural productions - Application rates -
Distribution - Distribution ratio - Greenhouse conditions - Selenium concentrations -
Wheat
Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline
Earth Metals - 804 Chemical Products Generally - 821 Agricultural Equipment and
Methods; Vegetation and Pest Control - 821.4 Agricultural Products
Numerical data indexing:Percentage 1.11e+01%, Percentage 1.21e+01%, Percentage 1.32e+01%,
Percentage 2.26e+01%, Percentage 2.40e+01%, Percentage 2.59e+01%
DOI:10.13227/j.hjkx.201607194
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 113>
Accession number:20171003416428
Title:Screening of the reduction/stabilization reagent for Cr(VI) contaminated soil in a
planting site and reaction process monitoring
Authors:Li, Pei-Zhong (1); Lü, Xiao-Jian (2); Wang, Hai-Jian (1); Yang, Su-Cai (1);
Wei, Wen-Xia (1); Song, Yun (1)
Author affiliation:(1) Beijing Key Laboratory of Industrial Land Contamination and
Remediation, Environmental Protection Research Institute of Light Industry, Beijing;
100089, China; (2) College of Exploration Technology and Engineering, Hebei Dizhi
University, Shijiazhuang; 050031, China
Corresponding author:Song, Yun(liepi_song@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:368-373
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:There are lots of problems in the domestic remediation of Cr(VI) contaminated
soil field, such as lack of the key processing parameters, poor long-term effect and so
on. The Cr(VI) heavy polluted surface soil was sampled from an electroplating site in
North-China, and then treated with five different reducing reagents. At the same time,
the on-line ORP probes and interval sampling test were chosen to monitor the reaction
process, and to explore the reaction rate and effect. The results showed that No.4
reagent had the highest Cr(VI) reduction effect, reaching up to 99.5%, and the minimum
soil Cr(VI) concentration could reach 2.4 mg·kg<sup>-1</sup>. The No.1 and No.4
reagents had relatively faster reducing rates. There were obvious difference in ORP and
pH monitoring values between different reductants, for example, the No.1 reagent kept the
ORP value stable at around -400 mV. The No.4 reagent gradually increased the value from
-200 mV to 100 mV since 30h, and then kept stable. According to the pH difference among
different reductants, the No.4 reagent was the best and kept the pH value at around 7.
Taking together the final effect and process key parameters, the No.4 reagent was the
best. The scale-up experiment was operated with process monitoring, and the ORP and
conductivity values showed that the reduction reaction took about 160 h. This work would
provide theoretical basis for controlling the maintenance condition and reaction process
in soil Cr(VI) remediation. © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Soil pollution
Controlled terms:Chemical reactions - Chromium compounds - Heavy metals - Pollution -
Process control - Process monitoring - Reduction - Remediation - Soil conservation -
Soils - Stabilization
Uncontrolled terms:Contaminated soils - Electroplating sites - Hexavalent chromium -
Processing parameters - Reducing reagents - Reduction reaction - Scale-up experiment -
Soil remediation
Classification code:454.2 Environmental Impact and Protection - 483.1 Soils and Soil
Mechanics - 531 Metallurgy and Metallography - 802.2 Chemical Reactions - 913.1
Production Engineering
Numerical data indexing:Percentage 9.95e+01%, Time 1.08e+05s, Time 5.76e+05s, Voltage -
2.00e-01V to 1.00e-01V, Voltage -4.00e-01V
DOI:10.13227/j.hjkx.201604098
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 114>
Accession number:20171003416400
Title:Characteristics of nitrogen and phosphorus emissions in the gufu river small
watershed of the three georges reservoir area
Authors:Hua, Ling-Ling (1); Li, Wen-Chao (1); Zhai, Li-Mei (1); Cui, Chao (1); Liu,
Hong-Bin (1); Ren, Tian-Zhi (2); Zhang, Fu-Lin (3); Lei, Qiu-Liang (1)
Author affiliation:(1) Institute of Agricultural Resources and Regional Planning, Chinese
Academy of Agricultural Sciences, Beijing; 100081, China; (2) Agro-Environmental
Protection Institute, Ministry of Agriculture, Tianjin; 300191, China; (3) Institute of
Plant Protection, Soil and Fertilizer Sciences, Hubei Academy of Agricultural Sciences,
Wuhan; 430064, China
Corresponding author:Zhai, Li-Mei(zhailimei@caas.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:138-146
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To study the seasonal change characteristics and form composition of nitrogen
and phosphorus output concentration and pollutant discharge load with rainfall
characteristics at the outlet of Gufu river small watershed, the quality and quantity of
water combined with natural rainfall events were monitored from January to December 2014.
The results showed that the annual runoff volume of the Gufu river small watershed was
0.6×10<sup>8</sup>m<sup>3</sup>. The runoff was concentrated in raining season
(from July to September), accounting for 63.9%. There was significant(P<0.01) positive
correlation between the runoff flow and the annual rainfall. The annual emission of total
nitrogen (TN) was 1 432 t·a<sup>-1</sup>, and the emission was 853
t·a<sup>-1</sup>during the raining season, accounting for 59.6% of annual TN
emission content. The dissolved nitrogen was the main form of nitrogen emission, and the
emission load of each month accounted for 55.4%-91.3% of TN. The positive correlation
between the nitrate nitrogen concentration and rainfall was significant (P<0.05). The
annual emission of total phosphorus (TP) was 563.1 t·a<sup>-1</sup>, and the
content during the raining season accounted for 78.6% of TP annual emission content. The
particle phosphorus (PP) was the main form of phosphorus emission, and the emission load
of each month accounted for 41.9%-79.5% of TP. There was significant(P<0.01) positive
correlation between the annual rainfall, sediment and TP, PP. The correlation between the
total dissolved phosphorus concentration and rainfall was significant (P<0.05). ©
2017, Science Press. All right reserved.
Number of references:34
Main heading:River pollution
Controlled terms:Nitrogen - Phosphorus - Pollution - Rain - Reservoirs (water) - Rivers -
Runoff - Water pollution - Watersheds
Uncontrolled terms:Nitrogen and phosphorus - Nonpoint pollutions - Output concentrations
- Positive correlations - Rainfall characteristics - Small watersheds - Three Georges
reservoir - Total dissolved phosphorus
Classification code:441.2 Reservoirs - 443.3 Precipitation - 444.1 Surface Water - 453
Water Pollution - 804 Chemical Products Generally
Numerical data indexing:Percentage 4.19e+01% to 7.95e+01%, Percentage 5.54e+01% to 9.13e
+01%, Percentage 5.96e+01%, Percentage 6.39e+01%, Percentage 7.86e+01%
DOI:10.13227/j.hjkx.201606210
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 115>
Accession number:20172603860964
Title:Community Characteristics of Cultivable Bacteria in Fine Particles
(PM<inf>2.5</inf>) of Beijing and Baoding
Authors:Hu, Ya-Dong (1, 2); Ma, An-Zhou (1); Lü, Peng-Yi (1, 3); Zhang, Yang (1);
Zhuang, Guo-Qiang (1)
Author affiliation:(1) Key Laboratory of Environmental Biotechnology, Research Center for
Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085, China; (2)
College of Resource and Environment, University of Chinese Academy of Sciences, Beijing;
100049, China; (3) School of Chemical & Environmental Engineering, China University
of Mining and Technology(Beijing), Beijing; 100083, China
Corresponding author:Zhuang, Guo-Qiang(gqzhuang@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1327-1339
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Fine particles(PM<inf>2.5</inf>) collected by two middle volume air samplers in
the suburbs of Baoding and the urban area of Beijing during Jan 10<sup>th</sup>to
17<sup>th</sup>, 2015, were used to compare the community characteristics of cultivable
bacteria in the two sites. In this study, we observed the particle morphology of
PM<inf>2.5</inf>using a field emission scanning electron microscope (FESEM), analyzed the
air mass transportation source of the two sampling sites by the NOAA/ARL HYSPLIT-4
backward trajectory model, and measured the concentrations of the major water-soluble
ions and heavy metal elements in the PM<inf>2.5</inf>samples using ion chromatography,
continuous flow analyzer and ICP-MS. The results indicated that, the cultivable bacteria
of PM<inf>2.5</inf>contained three phyla, which were Firmicutes, Actinobacteria and
α-Proteobacteria. Nine genera and 17 species of cultivable airborne bacteria were
isolated and identified. The most abundant phylum was Firmicutes. The Gram-positive
bacteria accounted for more than 90%. The spore-forming Bacillus which was the dominant
species contributed 68.15% and 75% to the total bacteria in urban Beijing and the suburbs
of Baoding, respectively. The difference in the community structure of PM<inf>2.5</inf>'s
cultivable bacteria in the two sampling areas may be affected by PM<inf>2.5</inf>'s
physical and chemical properties and air mass transportation. © 2017, Science Press.
All right reserved.
Number of references:53
Main heading:Bacteria
Controlled terms:Bacteriology - Chromatography - Correlation methods - Heavy metals - Ion
chromatography - Mass transportation - Scanning electron microscopy - Urban growth
Uncontrolled terms:Air mass - Community structures - Cultivable bacteria - Field emission
scanning electron microscopes - Gram-positive bacterium - Particle morphologies -
Physical and chemical properties - Spore
Classification code:403.1 Urban Planning and Development - 531 Metallurgy and
Metallography - 801 Chemistry - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 6.82e+01%, Percentage 9.00e+01%
DOI:10.13227/j.hjkx.201603224
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 116>
Accession number:20172603861006
Title:Effect of Sediments on Bioaccumulation of Mercury in Fish Body in the Water-Level-
Fluctuating Zone of the Three Gorges Reservoir Area
Authors:Sun, Song (1); Li, Chu-Xian (1); Zhang, Cheng (1, 2, 3); Wang, Yong-Min (1);
Wang, Ding-Yong (1, 2, 3)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Engineering Research Center for Agricultural
Non-point Source Pollution Control in the Three Gorges Reservoir Area, Chongqing; 400716,
China; (3) Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing;
400716, China
Corresponding author:Wang, Ding-Yong(dywang@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1689-1696
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Mercury (Hg) in the aquatic environment is easy to accumulate in fish. In order
to study the effect of the sediments on Hg accumulation in fish in the water-level-
fluctuation zone of the Three Gorges Reservoir, we conducted a 90-days simulated flooding
experiment by using the sediments with different concentrations of Hg. Our study showed
that the concentrations of the total mercury (THg) and methyl mercury (MeHg) in the
overlying water increased after flooding, and the concentrations in the muscle of fish
kept increasing in the period of experiment, the concentrations in the viscera and head
increased in the earlier period but seemingly decreased in the later period. The
bioaccumulated Hg content in the fresh was higher than that in the viscera and head,
between which there was no significant difference. Compared with the control group (no
sediment), the presence of sediments obviously increased the content of Hg bioaccumulated
in fish, and the bioaccumulated Hg level increased with the Hg concentrations in
sediment. The THg and MeHg in different fish parts presented a similar variation trend
with the BCF ranging 1.93×10<sup>5</sup>-8.89×10<sup>5</sup>for MeHg and
1.3×10<sup>3</sup>-12.8×10<sup>3</sup>for inorganic mercury, indicating that
MeHg was more prone to accumulate in fish. The MeHg in fish was significantly related
with THg, and accumulated MeHg occupied about 80.1% (muscle), 79.3% (visceral) and 66.7%
(head) of increased THg. After the reflooding of the sediment in the water-level-
fluctuating zone, net methylation could occur with MeHg as the product, and then MeHg
would diffuse to overlay water, further increasing the Hg bioaccumulation in fish.
Therefore, the potential pollution risk of Hg in the water-level-fluctuationg zone with
large area of the Three Gorges Reservoir cannot be ignored. © 2017, Science Press.
All right reserved.
Number of references:31
Main heading:Reservoirs (water)
Controlled terms:Alkylation - Bioaccumulation - Biochemistry - Fish - Floods - Mercury
(metal) - Muscle - Sediments - Water pollution
Uncontrolled terms:Aquatic environments - Inorganic mercury - Mercury in fishes - Methyl
mercury - Potential pollutions - Three gorges reservoir - Three gorges reservoir area -
Water-level-fluctuation zones
Classification code:441.2 Reservoirs - 453 Water Pollution - 461.2 Biological
Materials and Tissue Engineering - 461.9 Biology - 483 Soil Mechanics and Foundations -
549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 801.2
Biochemistry - 802.2 Chemical Reactions
Numerical data indexing:Age 2.47e-01yr, Percentage 6.67e+01%, Percentage 7.93e+01%,
Percentage 8.01e+01%
DOI:10.13227/j.hjkx.201609006
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 117>
Accession number:20172603860993
Title:Accumulation and Migration Characteristics in Soil Profiles and Bioavailability of
Heavy Metals from Livestock Manure
Authors:He, Meng-Yuan (1); Dong, Tong-Xi (1); Ru, Shu-Hua (2); Su, De-Chun (1)
Author affiliation:(1) College of Resources and Environment Science, China Agricultural
University, Beijing; 100193, China; (2) Institute of Agro-resource and Environment, Hebei
Academy of Agricultural and Forestry Sciences, Shijiazhuang; 050051, China
Corresponding author:Su, De-Chun(dcsu@cau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1576-1586
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The long term and high dosage application of livestock manure may result in
heavy metal accumulation and migration in the soil, which may endanger food security and
affect the top soil heavy metal environmental capacity. Thus, one of the most important
tasks for prevention of soil heavy metal pollution is scientific determination of the
safe use load of heavy metals in livestock manure. A 4-year field plot experiment was
carried out to quantitatively study the accumulation and migration characteristics of
heavy metals from pig and chicken manure in soil profiles and the differences of
bioavailability. The results showed that the contents of Cu and Cd increased
significantly by 43.8%-118.6% and 28.2%-44.9% in topsoil(0-15 cm) after 4-consecutive
year application of pig manure, and the contents of Cu, Zn, Cd, Cr, As, Pb also increased
by 29.7%-48.5%, 239%-456%, 19.9%-80.8%, 40.4%-163%,11.8%-22.0% and 80.3%~95.0% obviously
after application of chicken manure. The accumulation rates of Cu and Zn in topsoil were
76.4%-119% and 14.2%-20.4% with pig manure, 72.1%-88.7% and 63.9%-78.9% with chicken
manure. Under a high dosage of pig and chicken manure, Cu and Zn migrated to a deeper
soil evidently. Applying 60 t·hm<sup>-2</sup>of pig manure after 4-consecutive
year, Cu could migrate to 15-30 cm soil layer, Zn migrated to 30-60 cm soil layer with
chicken manure. Except topsoil, the contents of Cr, Cd, As, Pb did not significantly
increase in other soil layers. 4-year continuous application of chicken manure
significantly decreased the contents of Cu and Cd, but increased the contents of Zn and
Cr in wheat grain and the content of Zn in wheat straw. Pig manure significantly
decreased the content of Zn in wheat grain, but increased As content with 60
t·hm<sup>-2</sup>, the contents of Cu and As in wheat straw also increased
significantly. Besides, the cumulative rate of heavy metals in wheat was no more than 6%,
wheat grain carried out more Cu, Zn than straw, but the Cd, Cr, As, Pb were opposite. The
cumulative rate of heavy metals in wheat decreased with the increasing application of
manure. This research has an important significance in scientific determination of the
heavy metal loads of plow layer, ensuring the quality and safety of agricultural
production, and providing a scientific basis for the source control of soil heavy metal
pollution and the safety production of agricultural goods. © 2017, Science Press.
All right reserved.
Number of references:38
Main heading:Copper
Controlled terms:Agriculture - Animals - Bioaccumulation - Biochemistry - Cadmium -
Chemical contamination - Fertilizers - Food supply - Grain (agricultural product) - Heavy
metals - Lead - Manures - Pollution - Pollution control - Soil pollution - Soil
pollution control - Soil surveys - Soils - Straw - Zinc
Uncontrolled terms:Agricultural productions - Environmental capacity - Heavy metal
accumulation - Migration - Poultry manure - Quality and safeties - Soil profiles - Wheat
Classification code:461.9 Biology - 483.1 Soils and Soil Mechanics - 531 Metallurgy
and Metallography - 544.1 Copper - 546.1 Lead and Alloys - 546.3 Zinc and Alloys -
549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 801.2
Biochemistry - 804 Chemical Products Generally - 821 Agricultural Equipment and
Methods; Vegetation and Pest Control - 822.3 Food Products
Numerical data indexing:Age 4.00e+00yr, Percentage 1.42e+01% to 2.04e+01%, Percentage
2.82e+01% to 4.49e+01%, Percentage 2.97e+01% to 4.85e+01%, Percentage 4.38e+01% to 1.19e
+02%, Percentage 6.00e+00%, Percentage 6.39e+01% to 7.89e+01%, Percentage 7.21e+01% to
8.87e+01%, Percentage 7.64e+01% to 1.19e+02%, Size 0.00e+00m to 1.50e-01m, Size 1.50e-01m
to 3.00e-01m, Size 3.00e-01m to 6.00e-01m
DOI:10.13227/j.hjkx.201609227
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 118>
Accession number:20171003416432
Title:Variation characteristics of vegetables cadmium uptake factors and its relations to
environmental factors
Authors:Yang, Yang (1, 2); Li, Yan-Ling (1, 2); Chen, Wei-Ping (1); Wang, Mei-E (1);
Peng, Chi (1)
Author affiliation:(1) State Key Laboratory of Urban and Regional Ecology, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085,
China; (2) College of Resources and Environment, University of Chinese Academy of
Sciences, Beijing; 100049, China
Corresponding author:Chen, Wei-Ping(wpchen@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:399-404
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The consumption of vegetables is a probable cause of Cd exposure in several
world areas including China. In this study, we selected the prefecture of Youxian,
southern China, as a case to analyze the influences of various environmental factors on
Cd accumulation in vegetables based on a large scale agricultural and climatologically
survey and collection of 585 irrigation water and 625 paired soil-vegetables samples. The
results showed the concentration of Cd differed greatly in the irrigation water, soil and
vegetables. The average daily dose for the adult populations consumed vegetables cropping
in affected areas was slightly above the tolerable daily intake level, suggesting a
potential health risk. The vegetables Cd uptake factor followed the natural lognormal
distribution, and had a 10 percentile probability of higher than 1. The PUF values
exhibited comparable results and appeared to define a reasonable and consistent Cd risk
assessment. Many environmental variables (soil pH, soil organic matter, cation-exchange
capacity, rainfall, water pH, and nitrogenous fertilizer usage) exhibited significant
correlations with the concentrations of Cd in the soil-vegetable system. The canonical
corresponding analysis and path model analysis found that soil pH and soil organic matter
(SOM) had major direct effects on PUF. The close correlations between rainfall, water pH,
nitrogen fertilizer usage and PUF were mainly resuled from the direct effect of soil pH
and SOM. The high field-moisture capacity in the study area generated a rapid
acidification causing the migration of Cd to weaker bounding sites thus promoting the
vegetables uptake. The excessive application of nitrogen fertilizers led to a substantial
loss of SOM and worsening of soil acidification ultimately causing increasing Cd
accumulation in vegetables. Considering that the soil pH and SOM in the study area were
maintained at a low level, the accumulation risk of Cd in soil-vegetable system needs to
be addressed. The influence of environmental factors on vegetables accumulating Cd needs
to be fully considered for better and safer vegetables production. © 2017, Science
Press. All right reserved.
Number of references:26
Main heading:Soil pollution
Controlled terms:Acidification - Biogeochemistry - Biological materials - Cadmium
compounds - Distribution functions - Fertilizers - Gaussian distribution - Health risks -
Irrigation - Nitrogen - Nitrogen fertilizers - Organic compounds - pH effects -
Probability distributions - Rain - Regression analysis - Risk assessment - Soils -
Vegetables - Water
Uncontrolled terms:Canonical correlation analysis - Cation exchange capacities -
Environmental factors - Environmental variables - Log-normal distribution - Path analysis
- Tolerable daily intake - Variation characteristics
Classification code:443.3 Precipitation - 461.2 Biological Materials and Tissue
Engineering - 461.7 Health Care - 483.1 Soils and Soil Mechanics - 801.1 Chemistry,
General - 801.2 Biochemistry - 804 Chemical Products Generally - 804.1 Organic
Compounds - 821.3 Agricultural Methods - 821.4 Agricultural Products - 822.2 Food
Processing Operations - 914.1 Accidents and Accident Prevention - 922.1 Probability
Theory - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201606075
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 119>
Accession number:20171003416433
Title:Effect of sewage sludge compost products application on total mercury and
methylmercury in soil and plants
Authors:Yu, Ya-Wei (1); Yang, Yu-Han (1); Zhang, Cheng (1, 2); Yi, Jian-Ting (1); An,
Si-Wei (1); Wang, Ding-Yong (1, 2)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400715, China
Corresponding author:Zhang, Cheng(zhcheng@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:405-411
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Two different sludge composting products (with and without biochar) were applied
in field to study the variations of total mercury (THg) and methylmercury (MeHg) in soil
and plants, as well as their migration in the soil-plant system and accumulation ability
in plants during the sludge compost land use process. The results indicated that the
concentrations THg and MeHg in soil increased after applying sewage sludge compost
products, while the THg level was still lower than the secondary standard of national
soil environmental quality. Biochar was speculated to probably promote the soil mercury
methylation with lower MeHg/THg ratios in different soil treatments. THg concentrations
in mature plants were significantly lower than those in seedling stage, but MeHg levels
were higher than those in seedling stage. An obvious influence of composting on MeHg
enrichment in plants was observed, and this similar effect was not found for THg
enrichment. MeHg concentration in the soils applied with biochar compost was
significantly higher than that without applying biochar compost soil, while MeHg in plant
presented a contrary trend with higher level observed in no-biochar compost soil,
suggesting that the addition of biochar could be in favour of soil MeHg formation and
inhibit the MeHg accumulation in plants by influencing its migration. Since a strong MeHg
accumulation ability with BCF of 1.24-14.63 was present in plant, the mercury ecological
risk in soil environment caused by long-term fertilizing should be noticed. © 2017,
Science Press. All right reserved.
Number of references:33
Main heading:Soil pollution
Controlled terms:Alkylation - Composting - Land use - Mercury (metal) - Plants (botany) -
Sewage sludge - Soils
Uncontrolled terms:Accumulation - Bio chars - Compost products - Methyl mercury - Plant -
Total mercuries
Classification code:403 Urban and Regional Planning and Development - 452.2 Sewage
Treatment - 483.1 Soils and Soil Mechanics - 549.3 Nonferrous Metals and Alloys
excluding Alkali and Alkaline Earth Metals - 802.2 Chemical Reactions
DOI:10.13227/j.hjkx.201606045
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 120>
Accession number:20171003409573
Title:Accumulation and biotransformation in typical freshwater algae species influenced
by titanium dioxide nanoparticles under long-term exposure
Authors:Li, Jin-Li (1, 3); Wang, Zhen-Hong (2, 3); Yan, Ya-Meng (3); Huang, Bing (1);
Luo, Zhuan-Xi (3)
Author affiliation:(1) Faculty of Environmental Science and Engineering, Kunming
University of Science and Technology, Kunming; 650500, China; (2) Fujian Province Key
Laboratory of Modern Analytical Science and Separation Technology, College of Chemistry
and Environment, Minnan Normal University, Zhangzhou; 363000, China; (3) Key Laboratory
of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of
Sciences, Xiamen; 361021, China
Corresponding author:Luo, Zhuan-Xi(zxluoire@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:832-836
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In the present study, the accumulation and biotransformation of arsenate in
typical freshwater algae species were examined under long-term influence of titanium
dioxide nanoparticles (nano-TiO<inf>2</inf>). Results showed that different algae species
had largely varied capacities of accumulation and biotransformation of arsenate. The
arsenic accumulation reached (819.66±11.25) μg·g<sup>-1</sup>DW in
Scenedesmus obliquus, which was higher than that in Microcystis aeruginosa of
(355.95±8.31) μg·g<sup>-1</sup>DW. Nano-TiO<inf>2</inf>increased arsenic
accumulation in these exposed algae species, and then reduced arsenic levels in the
relative culture media. Furthermore, nano-TiO<inf>2</inf>improved arsenic
biotransformation in the exposed algae, and the organic arsenic was dimethylarsinous acid
(DMA) and monomethylarsonous acid (MMA) in Microcystis aeruginosa and Scenedesmus
obliquus, respectively. Additionally, the release of organic arsenic was lower from the
exposed algae in nano-TiO<inf>2</inf>treatments than in the control, indicating that
nano-TiO<inf>2</inf>couldn't stimulate the release of organic arsenic from algae under
long-term exposure. These results could improve insights on the ecological risk of nano-
TiO<inf>2</inf>associated with arsenic in the environment. © 2017, Science Press.
All right reserved.
Number of references:26
Main heading:Algae
Controlled terms:Arsenic - Bacteria - Bioconversion - Nanoparticles - Oxides - Titanium -
Titanium dioxide - Water
Uncontrolled terms:Arsenate - Dimethylarsinous acid - Long term exposure - Microcystis
aeruginosa - Monomethylarsonous acids - Scenedesmus obliquus - Speciation - Titanium
dioxide nanoparticles
Classification code:542.3 Titanium and Alloys - 761 Nanotechnology - 801.2
Biochemistry - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 933 Solid
State Physics
DOI:10.13227/j.hjkx.201608134
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 121>
Accession number:20171003409554
Title:Start-up of combined floc-granule CANON process and the effects of SRT on reactor
performance
Authors:Sun, Yan-Fang (1); Han, Xiao-Yu (2, 3, 4); Zhang, Shun-Jun (3, 4); Li, Xing (1);
Cao, Xiang-Sheng (1)
Author affiliation:(1) Key Laboratory of Beijing for Water Quality Science and Water
Environmental Recovery Engineering, College of Architecture and Civil Engineering,
Beijing University of Technology, Beijing; 100124, China; (2) College of Resources and
Environmental Engineering, Harbin Institute of Technology, Harbin; 150090, China; (3)
Research and Development Center of Beijing Drainage Group Technology, Beijing; 100022,
China; (4) Beijing Engineering Research Center for Wastewater Reuse, Beijing; 100124,
China
Corresponding author:Cao, Xiang-Sheng(caxish@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:672-678
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To shorten the start-up time of CANON process and guide the sludge dischargement
in the practical project, the start-up of CANNON process and influence of different flocs
SRT were studied by inoculation ANAMMOX granules of different proportions in two same
specifications of SBR reactor. During the experiment, the temperature was controlled at
30℃±1℃ and pH was 7-8. The results showed that it was not good for
CANON process rapid start-up when the two reactors were inoculated with 5% and 10%
ANAMMOX granules respectively and the initial FA concentration exceeded 44
mg·L<sup>-1</sup>. When the two reactors were inoculated with 5% and 10% ANAMMOX
granular sludge, the reactors were started-up successfully on Day 46 and Day 35,
respectively. When the flocs SRT was maintained at 30 d, 90 d and un-initiative discharge
respectively, the average total nitrogen removal rate could reach 0.35 kg·
(m<sup>3</sup>·d)<sup>-1</sup>stably. The quantitative PCR results of the three
different flocs SRT showed that with increasing flocs SRT, the abundance of AOB was
relatively stable, the abundance of ANAMMOX increased slightly, while the abundance of
NOB significant increased. Therefore, it is necessary to elutriate flocs from reactor for
decreasing the quantity of NOB and long-term stable operation of the CANON process.
© 2017, Science Press. All right reserved.
Number of references:23
Main heading:Nitrogen removal
Controlled terms:Granular materials - Granulation - Nitrogen - Polymerase chain reaction
- Reactor startup - Wastewater treatment
Uncontrolled terms:Autotrophic nitrogen removal - Different proportions - Granular sludge
- Practical projects - Quantitative PCR - Reactor performance - Sludge retention time -
Total nitrogen removal
Classification code:452.4 Industrial Wastes Treatment and Disposal - 621 Nuclear
Reactors - 801.2 Biochemistry - 802.3 Chemical Operations - 804 Chemical Products
Generally - 951 Materials Science
Numerical data indexing:Mass_Density 4.40e-02kg/m3, Percentage 1.00e+01%, Percentage
5.00e+00%
DOI:10.13227/j.hjkx.201608108
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 122>
Accession number:20171003409547
Title:Impact of ammonia and H<inf>2</inf>O<inf>2</inf>on bromate and disinfection by-
products control
Authors:Wang, Yong-Jing (1, 2); Du, Xu (1); Jin, Meng (1); Feng, Si-Jie (1); Yang, Kai
(2, 3); Zhang, Ming-Lu (1); Yu, Jian-Wei (2, 3)
Author affiliation:(1) Department of Environmental Science and Engineering, School of
Food and Chemical Engineering, Beijing Technology and Business University, Beijing;
100048, China; (2) Key Laboratory of Drinking Water Science and Technology, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085,
China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Yu, Jian-Wei(jwyu@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:616-621
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A pilot-scale study with conventional water treatment and ozone-biological
activated carbon (O<inf>3</inf>-BAC) treatment was conducted to evaluate the impact of
ammonia and hydrogen peroxide (H<inf>2</inf>O<inf>2</inf>) addition on the bromate and
disinfection by-products formation potential (DBPFP) control, with bromide containing
water as raw water. It was found that bromate concentration would exceed 10.00
μg·L<sup>-1</sup>as ozone doses were higher than 1.0 mg·L<sup>-
1</sup>under different water qualities. Ammonia and H<inf>2</inf>O<inf>2</inf>could
effectively control bromate formation and bromate concentration decreased as ammonia and
H<inf>2</inf>O<inf>2</inf>doses increased. Bromate concentration could be controlled
below 10.00 μg·L<sup>-1</sup>as ammonia dose was 0.10-0.30 mg·L<sup>-
1</sup>or the m(H<inf>2</inf>O<inf>2</inf>)/m(O<inf>3</inf>) was 0.2-1.0. However, as
ammonia-H<inf>2</inf>O<inf>2</inf>was combined for the same purpose, bromate increased
firstly and then decreased. Ammonia addition would not significantly affect the THMFP
control but H<inf>2</inf>O<inf>2</inf>application would depress the efficiency of THMFP
removal. © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Ozone water treatment
Controlled terms:Activated carbon - Activated carbon treatment - Ammonia - Disinfection -
Hydrogen peroxide - Oxidation - Ozone - Peroxides - Water quality - Water treatment
Uncontrolled terms:Biological activated carbon - Bromate - Bromate formation -
Conventional water treatment - Disinfection by-product - Disinfection by-products
formation potential - Pilot-scale study - Trihalomethanes
Classification code:445.1 Water Treatment Techniques - 445.2 Water Analysis - 802.2
Chemical Reactions - 804 Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 1.00e-03kg/m3, Mass_Density 1.00e-04kg/m3 to 3.00e-
04kg/m3, Mass_Density 1.00e-05kg/m3
DOI:10.13227/j.hjkx.201605091
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 123>
Accession number:20171003409549
Title:Adsorptive remediation of Cr(VI) contaminated groundwater with chemically
synthesized schwertmannite
Authors:Zhu, Li-Chao (1); Liu, Yuan-Yuan (1); Li, Wei-Min (1); Mou, Hai-Yan (1, 2); Wang,
Wan-Yu (1); Shi, De-Zhi (1); Wang, Tao (1)
Author affiliation:(1) Key Laboratory of the Three Gorges Reservoir Region's Eco-
Environment, Ministry of Education, Chongqing University, Chongqing; 400044, China; (2)
College of Architecture and Environment, Sichuan University, Chengdou; 610065, China
Corresponding author:Liu, Yuan-Yuan(liuyuanyuan@cqu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:629-639
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Schwertmannite is usually naturally found in acidic mining wastewater and
frequently used in the adsorption of heavy metal anions from water and wastewater.
Schwertmannite was synthesized through a facile chemical method and utilized to remove
Cr(VI) from contaminated groundwater. The kinetics, thermodynamics and isotherms, as well
as the effects of environmental factors on the Schwertmannite adsorption processes were
investigated. The experimental results showed that the synthesized Schwertmannite had a
strong adsorption capability of Cr(VI) from aqueous solution. At the pre-set initial
concentrations of Cr(VI), the Schwertmannite adsorption of Cr(VI) achieved equilibrium
within 24 h, and the Lagergren's second-order model fitted the adsorption process better
compared to Lagergren's first-order model and intraparticle diffusion model. Langmiur
equation fitted the adsorption isotherms better than Freundlich equation. The Cr(VI)
adsorption on Schwertmannite mainly involved ion exchange reaction between Cr(VI) and
anions such as OH<sup>-</sup>and SO<inf>4</inf><sup>2-</sup>and surface complexation
reactions. The ΔH<sup>θ</sup>and ΔG<sup>θ</sup>were 6.368
kJ·mol<sup>-1</sup>and -1.215 kJ·mol<sup>-1</sup>, respectively, therefore
the adsorption of Cr(VI) was a spontaneous and endothermic process. The removal of Cr(VI)
from aqueous solution increased with increasing Schwertmannite dosage at pH =4.5. Acidic
pH in the range of 4.5-6 favored Cr(VI) removal with Schwertmannite compared to that
under basic conditions. Under the conditions of 5 mg·L<sup>-1</sup>of initial Cr
(VI) concentration, 0.5 g·L<sup>-1</sup>of Schwertmannite dosage, pH=6, maximum
Cr(VI) removal of 93.1% was achieved and the adsorption capacity of Cr(VI) with
Schwertmannite reached up to 40.4 mg·g<sup>-1</sup>. Batch tests showed that the
presence of HCO<inf>3</inf><sup>-</sup>and SO<inf>4</inf><sup>2-</sup>inhibited the
adsorption of Cr(VI) while Cl<sup>-</sup>had no significant impact. Cations and natural
organic matter had a pH-dependent impact on Cr(VI) removal: at pH=8 natural organic
matter and cations would significantly inhibit the Cr(VI) sorption, while the impact
could be neglected at weak acidic conditions (pH=6). © 2017, Science Press. All
right reserved.
Number of references:28
Main heading:Chromium
Controlled terms:Adsorption - Biogeochemistry - Biological materials - Chromium compounds
- Complexation - Groundwater - Groundwater pollution - Heavy metals - Hydrochemistry -
Ion exchange - Ions - Organic compounds - pH - Positive ions - Remediation - Solutions -
Surface reactions - Synthesis (chemical) - Thermodynamics
Uncontrolled terms:Adsorption capability - Contaminated groundwater - Environmental
factors - Intraparticle diffusion models - Ion exchange reactions - Natural organic
matters - Schwertmannite - Surface complexation reactions
Classification code:444.2 Groundwater - 454.2 Environmental Impact and Protection -
461.2 Biological Materials and Tissue Engineering - 481.2 Geochemistry - 531
Metallurgy and Metallography - 543.1 Chromium and Alloys - 641.1 Thermodynamics - 801.1
Chemistry, General - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804.1
Organic Compounds
Numerical data indexing:Mass_Density 5.00e-01kg/m3, Percentage 9.31e+01%, Time 8.64e+04s
DOI:10.13227/j.hjkx.201608044
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 124>
Accession number:20171003416388
Title:Particle size distribution and diffusion for simulated cooking fume
Authors:Li, Shuang-De (1); Xu, Jun-Bo (1); Mo, Sheng-Peng (1, 2); Li, Wen-Hui (1, 2);
Gao, Jia-Jia (3); Cao, Ya-Qun (3); Chen, Yun-Fa (1)
Author affiliation:(1) State Key Laboratory of Multi-phase Complex Systems, Institute of
Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China; (2) University
of Chinese Academy of Sciences, Beijing; 100190, China; (3) Key Laboratory of Healthy
& Intelligent Kitchen System Integration, Ningbo; 315336, China
Corresponding author:Chen, Yun-Fa(yfchen@ipe.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:33-40
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Studying particle size distribution and dispersion characteristics of cooking
oil fume can help to analyze the influence of the particles on indoor air quality and the
health of the residents. Electrical low pressure impactor (ELPI) was employed to measure
the number and mass concentration of the particles size range of 0.03-10 μm at two
different locations in the kitchen space with smoke exhaust on and off, respectively. The
cooking particles were mostly located at below 655 nm. The smoke exhaust with open
condition could remarkably decrease the kitchen's cooking fume. The number concentration
of particles decreased from 2.8×10<sup>6</sup>cm<sup>-3</sup>to
2.3×10<sup>5</sup>cm<sup>-3</sup>, and PM<inf>2.5</inf>(aerodynamics diameter
≤2.5 μm particulate matter) mass concentrations decreased from 85.9
mg·m<sup>-3</sup>to 6.2 mg·m<sup>-3</sup>. The sucking efficiency of smoke
exhaust for PM<inf>10</inf>was higher than PM<inf>2.5</inf>. The number concentration of
particles could be declined by 65%, and the cooking fume of PM<inf>2.5</inf>could be
declined by 75% during the diffusion process detected at the area of 3 m far away from
the area where cooking took place. The distribution of PM<inf>2.5</inf>mass concentration
field of oil fume was simulated by computational fluid dynamics. The temperature field
distribution of oil fume was monitored by infrared camera, presenting sector diffusion
with the temperature decreasing from 70℃ to room temperature. © 2017, Science
Press. All right reserved.
Number of references:24
Main heading:Particle size analysis
Controlled terms:Air quality - Computational fluid dynamics - Diffusion - Indoor air
pollution - Light transmission - Oils and fats - Particle size - Particles (particulate
matter) - Size distribution - Smoke - Temperature - Temperature distribution
Uncontrolled terms:Dispersion characteristics - Electrical low-pressure impactor - Fume
particles - Indoor air quality - Mass concentration - Number concentration - Particulate
Matter - Temperature field distribution
Classification code:451 Air Pollution - 451.2 Air Pollution Control - 641.1
Thermodynamics - 723.5 Computer Applications - 741.1 Light/Optics - 804.1 Organic
Compounds - 922.2 Mathematical Statistics - 951 Materials Science
Numerical data indexing:Percentage 6.50e+01%, Percentage 7.50e+01%, Size 3.00e+00m, Size
3.00e-08m to 1.00e-05m, Size 6.55e-07m
DOI:10.13227/j.hjkx.201605110
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 125>
Accession number:20171003409571
Title:Effects of continuous application of sewage sludge compost on heavy metals
accumulation and mobility characteristics in soil profile and on heavy metals uptake of
wheat
Authors:Sun, Na (1); Shang, He-Ping (1); Ru, Shu-Hua (2); Su, De-Chun (1)
Author affiliation:(1) College of Resource and Environment Sciences, China Agricultural
University, Beijing; 100193, China; (2) Institute of Agro-resource and Environment, Hebei
Academy of Agriculture and Forestry Sciences, Shijiazhuang; 050051, China
Corresponding author:Su, De-Chun(dcsu@cau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:815-824
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The use of sewage sludge compost(SSC)as fertilizer may cause increased leaching
due to its high content of heavy metals and thus pose a threat to groundwater quality.
The effect of SSC application on heavy metals leaching in calcareous soils has been
studied in field trials, which provides basis for determining heavy metals environmental
capacity and preventing metal pollution in farmland soil scientifically. The results
indicated that the contents of Cu, Zn elevated obviously with the increase of the age and
the dosage of SSC utilization in the topsoil(0-15 cm) under 4-year continuous application
of SSC. Under higher levels of the compost treatment, the heavy metals Cu and Zn were
found to migrate into the 15-30 cm soil and 60-90 cm soil under the experimental
condition. Nevertheless, the majority of Cu and Zn from SSC accumulated in topsoil and
the highest accumulation rates could reach 75.3% for Cu and 85.9% for Zn. The contents of
Cd, Pb increased significantly in topsoil after 4-year continuous application of SSC, and
their increases could reach 57.2%-165.2% for Cd and 13%-34% for Pb compared with CK. At
60-90 cm soil, the contents of Cr, As and Pb were also significantly higher than those in
CK treatment. Application of SSC not only caused accumulation of some heavy metals in
topsoil but also leached heavy metals located in the subsurface soil down in this
experiment. Continuous utilization of SSC increased Zn concentration of wheat grain, and
the increase could reach 13.3%-47.9%. For the concentrations of Cr and Pb in wheat grain,
the values exceeded the national food and healthy standards value (GB 2762-2012) in part
of compost treatments. The cumulative ratio of heavy metals carried out by wheat were all
below 10% after 4-year experiment, wheat grain carried much more Cu, Zn out than wheat
straw, but it was opposite for Cr, As, Cd, Pb. The cumulative ratio of heavy metals
carried by wheat decreased with the increasing level of SSC utilization. The amounts of
heavy metals migrated to deeper soil should be considered when determining the
environmental capacity of heavy metals in farmland soil. © 2017, Science Press. All
right reserved.
Number of references:41
Main heading:Soil pollution
Controlled terms:Cadmium - Carrier mobility - Composting - Copper - Farms - Grain
(agricultural product) - Groundwater - Heavy metals - Leaching - Lead - Sewage sludge -
Soils - Water quality - Zinc
Uncontrolled terms:Accumulation rates - Cumulative ratios - Environmental capacity -
Experimental conditions - Mobility characteristics - Sewage sludge compost - Soil
profiles - Wheat
Classification code:444.2 Groundwater - 445.2 Water Analysis - 452.2 Sewage Treatment
- 483.1 Soils and Soil Mechanics - 531 Metallurgy and Metallography - 544.1 Copper -
546.1 Lead and Alloys - 546.3 Zinc and Alloys - 549.3 Nonferrous Metals and Alloys
excluding Alkali and Alkaline Earth Metals - 712.1 Semiconducting Materials - 802.3
Chemical Operations - 821 Agricultural Equipment and Methods; Vegetation and Pest
Control - 821.4 Agricultural Products
Numerical data indexing:Age 4.00e+00yr, Percentage 1.00e+01%, Percentage 1.30e+01% to
3.40e+01%, Percentage 1.33e+01% to 4.79e+01%, Percentage 5.72e+01% to 1.65e+02%,
Percentage 7.53e+01%, Percentage 8.59e+01%, Size 0.00e+00m to 1.50e-01m, Size 1.50e-01m
to 3.00e-01m, Size 6.00e-01m to 9.00e-01m
DOI:10.13227/j.hjkx.201608031
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 126>
Accession number:20171003409543
Title:Efficiency and mechanism of nitrogen and phosphorus removal in modified zeolite
wetland
Authors:Wu, Peng (1); Lu, Shuang-Jun (2); Xu, Le-Zhong (1); Liang, Qi-Qi (1); Shen, Yao-
Liang (1, 3, 4)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Suzhou Environmental Science
Research Institute, Suzhou; 215004, China; (3) Jiangsu Collaborative Innovation Center of
Technology and Material of Water Treatment, Suzhou; 215009, China; (4) Jiangsu Provincial
Key Laboratory of Environmental Science and Engineering, Suzhou; 215009, China
Corresponding author:Shen, Yao-Liang(ylshen@mail.usts.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:580-588
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To study the efficiency and mechanism of nitrogen and phosphorus removal for
decentralized rural sewage in modified zeolite wetland, the modified zeolite was applied
as substrate into a combined process composed of anaerobic baffled reactor (ABR) and
baffled flow constructed wetland (BFCW), providing a new way for rural sewage treatment
in Suzhou City. The study was contrasted with zeolite wetland. The results showed that
the modified zeolite wetland had high efficiency and stability of nitrogen and phosphorus
removal, and the nitrogen and phosphorus removal quantities of modified zeolite wetland
were 1.8% and 1 times higher than those of zeolite wetland during the trial. The modified
zeolite wetland mainly removed nitrogen and phosphorus by substrate adsorption, and the
main fractions of modified zeolite were Ca-P and Al-P. The oxygen-secretion and
absorption of plants stabilized the water quality of the effluent. The substrate
adsorption was the main nitrification removal pathway in front of the wetland, and
nitrification and denitrification were the main nitrification removal pathways at the end
of the wetland. The nitrogen and phosphorus adsorption capacities during the pilot test
were much higher than those of the static test. The optimization of phosphorus adsorption
capacity for modified zeolite was achieved under the synergy of multiple pathways. The
effect of configuration and plant root was the main reason for the difference of nitrogen
and phosphorus adsorption quantities. Nitrification intensity led to the seasonal
fluctuation of nitrogen removal effect and stability in modified zeolite wetland, and the
low nitrification intensity in the front of wetland was related to the strong adsorption
of NH<inf>4</inf><sup>+</sup>-N by the modified zeolite. © 2017, Science Press. All
right reserved.
Number of references:14
Main heading:Nitrogen removal
Controlled terms:Adsorption - Efficiency - Effluents - Mechanisms - Nitrification -
Nitrogen - Phosphorus - Rural areas - Sewage treatment - Water absorption - Water
quality - Wetlands - Zeolites
Uncontrolled terms:Anaerobic baffled reactor - Constructed wetlands - Modified zeolite -
Nitrification and denitrification - Nitrogen and phosphorus - Nitrogen and phosphorus
removal - Phosphorus adsorption - Rural sewages
Classification code:445.2 Water Analysis - 452.2 Sewage Treatment - 452.3 Industrial
Wastes - 601.3 Mechanisms - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804
Chemical Products Generally - 804.2 Inorganic Compounds - 913.1 Production Engineering
Numerical data indexing:Percentage 1.80e+00%
DOI:10.13227/j.hjkx.201607190
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 127>
Accession number:20171003416411
Title:Enhanced treatment of petrochemical secondary effluent by biological aerated filter
(Fe<sup>2+</sup>)-ozonation process
Authors:Xu, Min (1, 2); Wu, Chang-Yong (2); Zhou, Yue-Xi (2); Guo, Ming-Kun (3); Wang, Yi
(4)
Author affiliation:(1) College of Water Science, Beijing Normal University, Beijing;
100875, China; (2) Research Center of Water Pollution Control Technology, Chinese
Research Academy of Environmental Sciences, Beijing; 100012, China; (3) College of Earth
Science and Environment Engineering, Southwest Jiaotong University, Chengdu; 611756,
China; (4) School of Environmental and Municipal Engineering, Lanzhou Jiaotong
University, Lanzhou; 730070, China
Corresponding author:Zhou, Yue-Xi(zhouyuexi@263.net)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:229-237
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Two parallel biological aerated filters (BAF)-ozonation, named as number 1
(feeding with FeSO<inf>4</inf>·7H<inf>2</inf>O) and number 2, were used to treat
petrochemical secondary effluent. The effect of FeSO<inf>4</inf>·7H<inf>2</inf>O
on COD and phosphorus removal by BAF-ozonation was studied. Molecular weight
distribution, three-dimensional fluorescence scan and gas chromatography-mass
spectrometry (GC-MS) were used to analyze water quality before and after BAF-ozonation.
The results showed the average COD and TP concentrations were 82.91 mg·L<sup>-
1</sup>and 1.37 mg·L<sup>-1</sup>, respectively. When the dosage of
FeSO<inf>4</inf>·7H<inf>2</inf>O was 9 mg·L<sup>-1</sup>, the average
removal rates of COD and TP were 52.20% and 71.50%, respectively. The average COD removal
rate in number 1 combined process was 17.15%, which was higher than that in number 2
combined process. The TP removal rate in number 1 combined process was increased by
51.81%. The percentage of dissolved organic matters with relative molecular weight less
than 1×10<sup>3</sup>was 52% in the raw wastewater. However, the percentage
increased to 75% when treated by number 1 combined process and the removal rate of
various molecular weight organics was increased. Three-dimensional fluorescence analysis
showed that the dosage of FeSO<inf>4</inf>·7H<inf>2</inf>O could improve the
removal of fluorescent substances. GC-MS results showed that the number and concentration
of organics were reduced after number 1 combined process in comparison with number 2
combined process. BAF-ozone could be enhanced by FeSO<inf>4</inf>·7H<inf>2</inf>O
when treating petrochemical secondary effluent. © 2017, Science Press. All right
reserved.
Number of references:38
Main heading:Effluents
Controlled terms:Bandpass filters - Barium compounds - Biofilters - Biogeochemistry -
Biological materials - Effluent treatment - Fluorescence - Gas chromatography - Mass
spectrometry - Molecular weight - Molecular weight distribution - Organic compounds -
Ozone - Ozone water treatment - Ozonization - Passive filters - Petrochemicals - Water
quality
Uncontrolled terms:Advanced treatment - Biological aerated filter - Biological aerated
filters (BAF) - Dissolved organic matters - Gas chromatography-mass spectrometries (GC-
MS) - Phosphorus removal - Secondary effluent - Three-dimensional fluorescences
Classification code:445.2 Water Analysis - 452.3 Industrial Wastes - 452.4 Industrial
Wastes Treatment and Disposal - 461.2 Biological Materials and Tissue Engineering -
703.2 Electric Filters - 741.1 Light/Optics - 801 Chemistry - 801.2 Biochemistry -
802.2 Chemical Reactions - 802.3 Chemical Operations - 804 Chemical Products Generally
- 804.1 Organic Compounds - 931.3 Atomic and Molecular Physics
Numerical data indexing:Mass_Density 1.37e-03kg/m3, Mass_Density 8.29e-02kg/m3,
Mass_Density 9.00e-03kg/m3, Percentage 1.71e+01%, Percentage 5.18e+01%, Percentage 5.20e
+01%, Percentage 5.22e+01%, Percentage 7.15e+01%, Percentage 7.50e+01%
DOI:10.13227/j.hjkx.201606197
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 128>
Accession number:20172603860983
Title:Reducing Effect of Three Disinfection Technologies for Sulfonamides Resistance
Genes
Authors:Zheng, Ji (1); Zhou, Zhen-Chao (1); Chen, Fang (2); Chen, Tao (1); Wei, Yuan-Yuan
(1); Han, Yue (1); Chen, Hong (1)
Author affiliation:(1) Institute of Environmental Engineering, College of Environmental
and Resource Sciences, Zhejiang University, Hangzhou; 310058, China; (2) Hangzhou
Environmental Monitoring Center, Hangzhou; 310007, China
Corresponding author:Chen, Hong(chen_hong@zju.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1497-1505
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Antibiotic resistance genes (ARGs) in the environment have gradually engendered
extensive concern recently due to the harm caused to environment and human beings. In
this study, two sulfonamides resistant bacteria isolated from secondary effluents of a
municipal wastewater treatment plant were used to compare the efficacy of three different
disinfection processes (chlorination, ultraviolet and ozone) in reducing sulfonamides
resistance pollution using serial dilution plate counting method and qPCR. The behavior
characteristics of sulfonamides resistance genes during the disinfection process were
elucidated using disinfection+DNase I treatment. The results showed that all three
disinfection techniques could reduce the concentration of target bacteria, but the
abundance of sulfonamides resistance genes was still at a high level. Furthermore,
chlorination disinfection might reduce sulfonamides resistance genes by reducing
microbial biomass. Ultraviolet disinfection could damage genes directly. However, during
ozone disinfection, sulfonamides resistance genes would escape to environment, and its
potential environmental risks could not be ignored. © 2017, Science Press. All right
reserved.
Number of references:28
Main heading:Wastewater treatment
Controlled terms:Amides - Antibiotics - Bacteria - Chlorination - Disinfection -
Effluents - Genes - Ozone - Ozone resistance - Polymerase chain reaction - Sulfur
compounds
Uncontrolled terms:Antibiotic resistance genes - Behavior characteristic - Disinfection
process - Dnase i - Municipal wastewater treatment plants - Real-time quantitative PCR -
Sulfonamides - Ultraviolet disinfections
Classification code:452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and
Disposal - 461.2 Biological Materials and Tissue Engineering - 461.6 Medicine and
Pharmacology - 801.2 Biochemistry - 802.2 Chemical Reactions - 804 Chemical Products
Generally - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201610059
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 129>
Accession number:20172603860961
Title:Characteristics of the Size Distribution of Water Soluble Inorganic Ions in Sanya,
Hainan
Authors:Wang, Lu (1, 2); Liu, Zi-Rui (1); Wen, Tian-Xue (1); Miao, Hong-Yan (1); Wang,
Yue-Si (1)
Author affiliation:(1) State Key Laboratory of Atmospheric Boundary Layer Physics and
Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of
Sciences, Beijing; 100029, China; (2) University of Chinese Academy of Sciences, Beijing;
100049, China
Corresponding author:Liu, Zi-Rui(lzr@dq.cern.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1298-1306
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Size-resolved filter samples were collected in Sanya every other week from June
2012 to May 2014. The mass concentrations of water-soluble inorganic ions, including
anions (Cl<sup>-</sup>, NO<inf>3</inf><sup>-</sup>, SO<inf>4</inf><sup>2-</sup>) and
cations (Na<sup>+</sup>, NH<inf>4</inf><sup>+</sup>, K<sup>+</sup>, Mg<sup>2+</sup>,
Ca<sup>2+</sup>) were measured by ion chromatography. The results showed that the total
concentrations of measured water-soluble inorganic ions were (8.91±7.27) and
(11.34±9.37) μg·m<sup>-3</sup>in PM<inf>2.1</inf>and PM<inf>2.1-9</inf>,
respectively. In PM<inf>2.1</inf>, SO<inf>4</inf><sup>2-</sup>and NH<inf>4</inf><sup>
+</sup>comprised 72.2% of all water-soluble inorganic ions, while in PM<inf>2.1~9</inf>,
Cl<sup>-</sup>, Ca<sup>2+</sup>and Na<sup>+</sup>comprised 67.6% of all water-soluble
inorganic ions. In PM<inf>2.1</inf>, the total concentrations of water-soluble inorganic
ions had highest concentrations in winter and lowest concentrations in summer. In
PM<inf>2.1~9</inf>, the total concentrations of water-soluble inorganic ions presented
the highest concentrations in summer. SO<inf>4</inf><sup>2-</sup>and NH<inf>4</inf><sup>
+</sup>showed bimodal size distributions and the peaks in the fine mode shifted from
0.43-0.65 μm in spring, summer and autumn to 0.65-1.1 μm in winter.
NO<inf>3</inf><sup>-</sup>, Na<sup>+</sup>, Cl<sup>-</sup>, Ca<sup>2+</sup>and
Mg<sup>2+</sup>were unimodal with the peaks in the coarse mode of 4.7-9.0 μm. K<sup>
+</sup>showed bimodal size distribution with the fine mode at 0.43-0.65 μm and the
coarse mode at 4.7-5.8 μm. PCA analysis showed that water-soluble inorganic ions were
mainly affected by the secondary formation, sea salt and soil particles or falling dust.
© 2017, Science Press. All right reserved.
Number of references:39
Main heading:Ions
Controlled terms:Calcium - Ion chromatography - Size distribution
Uncontrolled terms:Bimodal size distribution - Filter sample - Mass concentration - PCA
analysis - Sanya - Seasonal variation - Soil particles - Water soluble inorganic ions
Classification code:549.2 Alkaline Earth Metals - 801 Chemistry - 922.2 Mathematical
Statistics
Numerical data indexing:Percentage 6.76e+01%, Percentage 7.22e+01%, Size 4.30e-07m to
6.50e-07m, Size 4.70e-06m to 5.80e-06m, Size 4.70e-06m to 9.00e-06m, Size 6.50e-07m to
1.10e-06m
DOI:10.13227/j.hjkx.201608081
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 130>
Accession number:20172603860976
Title:Pollution Characteristics and Risk Assessment of Heavy Metals from River Network
Sediment in Western Area of Taihu Lake
Authors:Bian, Bo (1, 2); Zhou, Yan (1, 3); Zhang, Qin (1, 3)
Author affiliation:(1) Jiangsu Academy of Environmental Science, Nanjing; 210036, China;
(2) Jiangsu Province Key Laboratory of Environmental Engineering, Nanjing; 210036, China;
(3) College of Environment, Hohai University, Nanjing; 210098, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1442-1450
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:River sediments is a valuable environmental medium for characterizing
contamination of heavy metals in the western areas of Taihu Basin and the associated
risks to human health. We collected samples of typical inflow river sediments from
nineteen sites during different water periods. The results showed that the concentrations
of heavy metals in the river sediments followed the order of
Zn>Cr>Cu>Pb>Ni>As>Cd>Hg. Compared to the background concentrations,
the mean concentrations of Zn, Cd, Cu, Ni and Pb seriously exceeded the standard values.
Except for As, the highest concentrations of heavy metals (Zn, Cr, Cu, Pb, Ni, Cd, Hg)
were found in the samples from normal water period. The metal (Cd) presented moderate
pollution degree and ecological risks,and the RI value of Cd accounted for about 47% of
the total RI value. The mPEC-Q values of the sediments were in the range of 0.12-0.76,
and the mean value was 0.3, indicating that the sediments in all of the sampling sites
had a 15%-29% probability of toxicity. In terms of the highest value of the heavy metals,
higher concentrations, I<inf>geo</inf>, mPEC-Q and PCA values were found at the S2
sampling sites. The results showed that effects of synergism of heavy metals pollutants
on the point were found in the paper, which will provide scientific basis for control of
heavy metal pollution in the Taihu Basin. © 2017, Science Press. All right reserved.
Number of references:31
Main heading:River pollution
Controlled terms:Cadmium - Copper - Health risks - Heavy metals - Lake pollution - Lead -
Nickel - Pollution - Pollution control - Risk assessment - Rivers - Sediments - Water
pollution - Water resources - Zinc
Uncontrolled terms:Background concentration - Different water periods - Ecological risks
- Environmental medium - Heavy metal pollution - Mean concentrations - Pollution degree -
River sediments
Classification code:444 Water Resources - 453 Water Pollution - 461.7 Health Care -
483 Soil Mechanics and Foundations - 531 Metallurgy and Metallography - 544.1 Copper -
546.1 Lead and Alloys - 546.3 Zinc and Alloys - 548.1 Nickel - 549.3 Nonferrous
Metals and Alloys excluding Alkali and Alkaline Earth Metals - 914.1 Accidents and
Accident Prevention
Numerical data indexing:Percentage 1.50e+01% to 2.90e+01%, Percentage 4.70e+01%
DOI:10.13227/j.hjkx.201608078
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 131>
Accession number:20171003409538
Title:Succession pattern of phytoplankton of Daning River in the Three Gorges Reservoir
and its driving factors
Authors:Zhang, Jia-Lei (1); Zheng, Bing-Hui (2); Liu, De-Fu (1); Wang, Li-Jing (2); Tan,
Qian-Ru (1)
Author affiliation:(1) Key Laboratory of Ecological Remediation of Lakes and Rivers and
Algal Utilization of Hubei Province, College of Civil and Environmental, Hubei University
of Technology, Wuhan; 430068, China; (2) State Key Laboratory of Environmental Criteria
and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water
Source Protection, Chinese Research Academy of Environmental Sciences, Beijing; 100012,
China
Corresponding author:Zheng, Bing-Hui(zhengbh@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:535-546
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To elucidate succession pattern of phytoplankton in the Daning River and its
driving factors, multivariate statistical analysis was conducted. By using the monitoring
data in different seasons of Daning river during April 2012 to January 2013, this paper
analyzed the succession pattern of phytoplankton in the Daning River and its driving
factors in typical tributaries of river-style reservoirs. According to the
characteristics of water level, the operational period of the TGR was classified into
following four stages: stage I (pre-November-April), stage II (May-July), stage III
(July-September) and stage IV (September-November). (1)The results indicated that the
values of Chlorophyll-a concentrations and algal density showed similar seasonal
variations, with the highest values occurring in stage III, followed by stages IV, II and
I. Succession of C-R-S growth strategies was the same generally: CR-R type dominated in
stage I, CS, CR/CS and R-CR dominated in stage II, III and IV, respectively. (2)The mean
values of Margalef index and Pielou index in stage IV and III were significantly greater
than those in stage II and I; the value of Shannon-waver index showed that the highest
value in stage III, followed in a descending order by stage I, II and IV; the
successional rate had the highest value in stage IV, followed in descending order by
stage III, I and II. (3) The results of Correlation analysis suggested that no
significant relationships were observed between the environmental parameters and
phytoplankton abundance in stage I. The results indicated that relative water column
stability(RWCS), index of feasible energy for phytoplankton (E<inf>t</inf>) and index of
feasible energy (Ef<sup>*</sup>) were key regulatory factors for phytoplankton community
in stage I. The results indicated that E<inf>t</inf>, Ef<sup>*</sup>and total phosphorus
(TP) were key regulatory factors for phytoplankton abundance in stage II. The results of
the redundancy analysis (RDA) suggested that RWCS, TP and the ratio of euphotic depth
[D<inf>eu</inf>(λ<inf>PAR</inf>)] to mixing depth (D<inf>mix</inf>)
[D<inf>eu</inf>(λ<inf>PAR</inf>)/D<inf>mix</inf>] were key regulatory factors for
phytoplankton community composition in stage II. The results indicated that
Ef<sup>*</sup>and TP were key regulatory factors for phytoplankton abundance in stage
III. The results of the RDA suggested that [D<inf>eu</inf>
(λ<inf>PAR</inf>)/D<inf>mix</inf>], E<inf>t</inf>, Ef<sup>*</sup>and TP were key
regulatory factors for phytoplankton community composition in stage III. The results
indicated that TP was key regulatory factor for phytoplankton abundance in stage IV. The
results of the RDA suggested that [D<inf>eu</inf>
(λ<inf>PAR</inf>)/D<inf>mix</inf>] was key regulatory factor for phytoplankton
community composition in stage IV. © 2017, Science Press. All right reserved.
Number of references:50
Main heading:Factor analysis
Controlled terms:Multivariant analysis - Phytoplankton - Reservoirs (water) - Rivers -
Water levels
Uncontrolled terms:Chlorophyll-a concentration - Driving factors - Multivariate
statistical analysis - Phytoplankton abundances - Phytoplankton community - Redundancy
analysis (RDA) - Succession pattern - Three gorges reservoir
Classification code:441.2 Reservoirs - 471 Marine Science and Oceanography - 922
Statistical Methods - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201606137
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 132>
Accession number:20171003409561
Title:Impacts of bioremediation on microbial communities and different forms of nitrogen
in petroleum contaminated soil
Authors:Ye, Xi-Qiong (1); Wu, Man-Li (1); Chen, Kai-Li (1); Li, Wei (1); Yuan, Jing (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Corresponding author:Wu, Man-Li(wumanli@xauat.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:728-734
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A laboratory study was conducted to investigate the impacts of bioremediation on
microbial communities and various nitrogen shifts in petroleum contaminated soil by using
GC-MS and Illumia MiSeq technique. Results showed the concentrations of alkane reduced
from 25 987.8 mg·kg<sup>-1</sup>to 12 788.6 mg·kg<sup>-1</sup>, and the
concentrations of polycyclic aromatic hydrocarbons (PAHs) decreased from 5 322.9
mg·kg<sup>-1</sup>to 2 917.2 mg·kg<sup>-1</sup>. Illumia MiSeq results
showed that soil microbial communities shifted significantly after remediation, and the
relative abundance of some phylum of hydrocarbon degraders (Firmicutes, Bacterodetes),
and some genus of degraders (Dietzia, Acinetobacter) increased. Besides, the contents of
total nitrogen and ammonia nitrogen increased firstly and then decreased during
remediation. However, the contents of nitrate nitrogen decreased at the early stage, and
then kept stable in the later stage of remediation. It can be concluded that
bioremediation effectively promoted petroleum hydrocarbon degradation, and the different
fractional hydrocarbon degradation was related to the relative abundance of hydrocarbon
degraders and available nitrogen contents. © 2017, Science Press. All right
reserved.
Number of references:22
Main heading:Polycyclic aromatic hydrocarbons
Controlled terms:Aromatic hydrocarbons - Bioremediation - Biotechnology - Hydrocarbons -
Microorganisms - Nitrogen - Petroleum chemistry - Pollution - Remediation - Soil
pollution - Soils
Uncontrolled terms:GC-MS - Hydrocarbon degradation - Illumia MiSeq - Microbial
communities - Petroleum hydrocarbons - Petroleum-contaminated soil - Polycyclic aromatic
hydrocarbons (PAHS) - Soil microbial community
Classification code:454.2 Environmental Impact and Protection - 461.8 Biotechnology -
461.9 Biology - 483.1 Soils and Soil Mechanics - 513.1 Petroleum Refining, General -
804 Chemical Products Generally - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201608008
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 133>
Accession number:20171003416421
Title:Seasonal variations of soil microbial plfas and soil enzyme activity under the
citrus plantation in mt.Jinyun, Chongqing
Authors:Li, Nan-Jie (1, 2); Zeng, Qing-Ping (1, 3); He, Bing-Hui (1); Zhou, Fei (4)
Author affiliation:(1) Key Laboratory of Eco-environments in Three Gorges Reservoir
Region, College of Resources and Environment, Southwest University, Chongqing; 400715,
China; (2) Chongqing Engineering Technology Research Center for Information Management in
Development, Chongqing Technology and Business University, Chongqing; 400067, China; (3)
Sichuan Allvery Environmental Technology Co., Ltd., Chengdu; 610000, China; (4) Chongqing
Key Laboratory of Forest Ecology, Chongqing; 400036, China
Corresponding author:He, Bing-Hui(hebinghui@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:309-317
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The soil microbial community and soil enzyme activity are important parts of
soil ecosystem, and they are sensitive to the ecological environment. In this study,
citrus plantation in Mt. Jinyun was chosen as the research object. The phospholipid fatty
acid (PLFAs) combined with principal component analysis method was used to study the
effect of season changes on soil microbial quantity, community structure characteristics
and soil enzyme activity at 0-20 cm soil layer under citrus forest. The results obtained
from this study were as follows: ① The season changes had a significant impact on
soil microbes (P<0.05). Moreover, 16:0, i17:0, 16:1 2OH, 18:0, cy19:0ω8c,
i17:1ω9c or 16:0 10-methyl were found to be common in all four seasons, and the
proportion of each phospholipid fatty acid was 49.57%, 41.63%, 35.41% and 38.05%,
respectively. In various microbial species, the PLFAs content of bacteria was the
highest, followed by fungi, and that of actinomycetes was the lowest. Our results
revealed that all kinds of micro-organisms showed obvious seasonal variation
characteristics. The total PLFAs quantity of citrus forest ranged from 6.868 to 24.085
nmol·g<sup>-1</sup>, which had a content order of
spring>autumn>winter>summer. The PLFAs content of bacteria, G<sup>-</sup>,
G<sup>+</sup>and actinomycetes also showed the same variation trend. However, the PLFAs
content of fungi showed a different variation trend, i.e., autumn was the highest,
followed by winter and summer, and spring was the lowest. The results suggested that
season change also had a significant impact on microbial community functional diversity
index. The variation trend of richness index (R) followed the order of
spring>winter>autumn>summer. Moreover, the variation trend of diversity index
(H') was winter>autumn>spring>summer. Furthermore, the variation trend of
evenness index (J) was summer>autumn>winter>spring. The dominance index (D)
increased with the change of season. ② Urease showed a change with the seasons
following summer>spring>autumn>winter; Soil invertase, soil catalase and acid
phosphatase activity changed obviously in autumn, followed by spring, summer, and winter.
③ The principal component analysis demonstrated that the PLFAs content of bacteria,
G<sup>-</sup>, G<sup>+</sup>, actinomycetes and total PLFAs made the greatest
contribution to soil fertility followed by that of invertase, catalase, acid phosphatase
and fungi. Moreover, our studies showed that the PLFAs content of urease made a minimum
contribution to the soil fertility. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Soils
Controlled terms:Bacteria - Ecology - Ecosystems - Enzyme activity - Enzymes - Fatty
acids - Forestry - Fungi - Microorganisms - Phosphatases - Phospholipids - Principal
component analysis
Uncontrolled terms:Acid phosphatase activities - Citrus forest - Ecological environments
- Phospholipid fatty acids - Principal component analysis method - Season changes - Soil
enzyme activity - Soil microbial community
Classification code:454.3 Ecology and Ecosystems - 461.9 Biology - 483.1 Soils and
Soil Mechanics - 804 Chemical Products Generally - 804.1 Organic Compounds - 922.2
Mathematical Statistics
Numerical data indexing:Molality 6.87e-06mol/kg to 2.41e-05mol/kg, Percentage 3.54e+01%,
Percentage 3.80e+01%, Percentage 4.16e+01%, Percentage 4.96e+01%, Size 0.00e+00m to
2.00e-01m
DOI:10.13227/j.hjkx.201605017
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 134>
Accession number:20171003416429
Title:Cd(II) ion adsorption and sealing onto SBA-15 mesoporous particles and the related
potential on Cd(II) polluted soil remediation
Authors:Huang, Hui (1); Ning, Xi-Cui (2); Guo, Zhan-Yu (1); Guo, Di (1); Zhang, Zeng-
Qiang (1, 3); Li, Rong-Hua (1, 3); Wang, Li (1); Ali, Amjad (1)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) Environmental Monitoring Station of Yangling
Agricultural High-tech Industries Demonstration Zone, Yangling; 712100, China; (3) Key
Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of
Agriculture, Yangling; 712100, China
Corresponding author:Li, Rong-Hua(rh.lee@nwsuaf.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:374-381
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Aiming to expand the utilization of porous silicate minerals in the remediation
of heavy metal contaminated soil, the mesoporous material SBA-15 was successfully
synthesized by using sodium silicate as silica source in this study. And the obtained
SBA-15 samples were characterized by TEM, X-ray diffraction, N<inf>2</inf>adsorption-
desorption and FTIR. Furthermore, characterization of Cd(II) adsorption and sealing
performance onto SBA-15 were evaluated through batch experiment, and the remediation
potential of Cd(II) contaminated soil was investigated by brassica planting in a pot
experiment. The results showed that SBA-15 had the mesoporous structure with surface area
of 507.3 m<sup>2</sup>·g<sup>-1</sup>and pore size of 7.38 nm. The maximum Cd(II)
adsorption capacity was 76.43 mg·g<sup>-1</sup>at pH above 7.0 with the adsorption
isotherm fitting the Langmuir model in the solution of 100 mg·L<sup>-1</sup>Cd
(II). The increase in ionic strength reduced the Cd(II) adsorption capacity. The Cd(II)
loaded SBA-15 could be regenerated with 0.1 mol·L<sup>-1</sup>HNO<inf>3</inf>,
while Cd(II) could be strongly sealed in the pore structure after introduction of sodium
silicate into the system. The pot experiment proved that the addition of SBA-15 (4.5
g·kg<sup>-1</sup>) into Cd-contaminated soil could reduce Cd(II) availability,
enhance the transformation of soluble and exchangeable Cd(II) fractions into carbonate
and Fe-Mn oxides bounded forms, inhibit the Cd(II) accumulation in the plant tissue and
improve the brassica growth. Based on these results, it can be concluded that combination
of the SBA-15 particle with sodium silicate has great potential to remediate Cd(II)
contaminated soil through adsorption and sealing properties. © 2017, Science Press.
All right reserved.
Number of references:33
Main heading:Soil pollution
Controlled terms:Adsorption - Cadmium compounds - Contamination - Heavy metals - Ionic
strength - Manganese - Mesoporous materials - Pollution - Pore size - Remediation -
Silicate minerals - Silicates - Silicon compounds - Soil conservation - Soils - X ray
diffraction
Uncontrolled terms:Adsorption desorption - Cd(II) - Cd-contaminated soils - Contaminated
soils - Heavy metal contaminated soils - Mesoporous material sba-15 - Mesoporous
structures - SBA-15
Classification code:454.2 Environmental Impact and Protection - 482.2 Minerals - 483.1
Soils and Soil Mechanics - 531 Metallurgy and Metallography - 543.2 Manganese and
Alloys - 801.4 Physical Chemistry - 802.3 Chemical Operations - 951 Materials Science
Numerical data indexing:Molar_Concentration 1.00e+02mol/m3, Size 7.38e-09m,
Specific_Surface_Area 5.07e+05m2/kg
DOI:10.13227/j.hjkx.201607123
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 135>
Accession number:20171003409541
Title:Photo-induced phosphate release from organic phosphorus decomposition driven by Fe
(III)-oxalate complex in lake water
Authors:Jiang, Yong-Can (1); Peng, Yun-Xiao (1); Liu, Guang-Long (1, 2); Zhou, Yi-Yong
(2); Zhu, Duan-Wei (1)
Author affiliation:(1) College of Resources & Environment, Huazhong Agriculture
University, Wuhan; 430070, China; (2) State Key Laboratory of Freshwater Ecology and
Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan; 430072,
China
Corresponding author:Liu, Guang-Long(liugl@mail.hzau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:563-571
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The phosphate released from organic phosphorus photo-decomposition has a
significantly influence on the phosphorus levels in the water column in lakes. In order
to reveal the effect of organic phosphorus photo-decomposition on phosphate level in lake
water, the phosphate released from organic phosphorus photo-decomposition driven by Fe
(III)-oxalate complex under UV-Vis and sunlight irradiation was investigated in natural
lake water using glyphosate as the model organic phosphorus. The effects of pH and
initial concentration of Fe(III), oxalate and glyphosate on the phosphate released from
glyphosate photolysis were studied. The results showed that phosphate could be released
from glyphosate degradation by Fe(III)-oxalate complex under UV-Vis and sunlight
irradiation. The concentration of phosphate reached 0.25 mg·L<sup>-1</sup>and 0.18
mg·L<sup>-1</sup>under UV-Vis and sunlight irradiation for 60 and 720 min,
respectively. The amount of phosphate released increased with the increase of the initial
concentration of Fe(III), as well as the increasing oxalate and glyphosate concentration
in lake water. However, the increase of pH could significantly inhibit this process in
the reaction system. The concentration of phosphorus decreased with the addition of
isopropanol, which indicated that the hydroxyl radical (·OH) was one of the main
active oxygen species of Fe(III)-oxalate complex. The rates of ·OH production for
Fe(III)-oxalate/UV-Vis and Fe(III)-oxalate/sunlight systems were 0.52×10<sup>-
2</sup>μmol·(L·min)<sup>-1</sup>and 0.03×10<sup>-
2</sup>μmol·(L·min)<sup>-1</sup>, respectively. The steady-state
concentrations of hydroxyl radical (·OH) for the Fe(III)-oxalate/UV-Vis conditions
were 4.74×10<sup>-16</sup>mol·L<sup>-1</sup>and 0.27×10<sup>-
16</sup>mol·L<sup>-1</sup>for the Fe(III)-oxalate/sunlight system. © 2017,
Science Press. All right reserved.
Number of references:41
Main heading:Iron compounds
Controlled terms:Decay (organic) - Herbicides - Ionization of gases - Irradiation - Lakes
- Oxalic acid - Phosphorus - Photolysis
Uncontrolled terms:Active oxygen species - Glyphosate degradation - Glyphosates -
Hydroxyl radicals - Initial concentration - Organic phosphorus - Oxalate complexes -
Steady state concentration
Classification code:802.2 Chemical Reactions - 804 Chemical Products Generally - 804.1
Organic Compounds
Numerical data indexing:Mass_Density 1.80e-04kg/m3, Mass_Density 2.50e-04kg/m3, Time
3.60e+03s, Time 4.32e+04s
DOI:10.13227/j.hjkx.201607035
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 136>
Accession number:20171003416408
Title:Optimization and validation of the analytical method to detect common illicit drugs
in wastewater
Authors:Gao, Ting-Ting (1); Du, Peng (1); Xu, Ze-Qiong (1); Yang, Jun (2); Zhang, Hua-
Fang (2); Li, Xi-Qing (1)
Author affiliation:(1) Laboratory of Earth Surface Processes, College of Urban and
Environmental Sciences, Peking University, Beijing; 100871, China; (2) Beijing Urban
Drainage Monitoring Center Co., Ltd., Beijing; 100012, China
Corresponding author:Li, Xi-Qing(xli@urban.pku.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:201-211
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Illicit drugs have been recognized as a group of emerging pollutants. Based on
previous research, procedures to pre-treat wastewater including SPE column, pH of water
samples, and processes of washing, acidifying and re-dissolving were compared. It was
found that the best recovery was achieved when wastewater was adjusted to pH=2 and Oasis
MCX column was used. It was not necessary to flush the loaded column or to acidify the
eluate prior to evaporation using nitrogen steam. After evaporation, it is recommended to
redissolve the evaporated samples using 200 μL acetonitrile and 100 μL
acetonitrile+100 μL 5 mmol·L<sup>-1</sup>ammonium acetate in Milli-Q water for
HILIC-UPLC-MS/MS and C18-UPLC-MS/MS, respectively. After comparing retention times, limit
of detection, limit of quantification, recoveries, and matrix effects of HILIC and C18
methods, C18-UPLC-MS/MS was chosen. Influent and effluent samples from 12 wastewater
treatment plants in Beijing were analyzed using the optimized method for validation. The
validated methods set a firm foundation to apply the sewage-based epidemiology to monitor
illicit drug abuse in China. © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Effluents
Controlled terms:Acetonitrile - Effluent treatment - Evaporation - Recovery - Sewage -
Wastewater - Wastewater treatment
Uncontrolled terms:Analytical method - Emerging pollutants - Illicit drug - Limit of
detection - Limit of quantifications - UPLC-MS/MS - Validated methods - Wastewater
treatment plants
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal -
802.3 Chemical Operations - 804.1 Organic Compounds
Numerical data indexing:Molar_Concentration 5.00e+00mol/m3, Volume 1.00e-07m3, Volume
2.00e-07m3
DOI:10.13227/j.hjkx.201606170
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 137>
Accession number:20171003416417
Title:Process of enrichment and culture of PAOs on a novel biofilm process of
dephosphorization
Authors:Zheng, Ying (1, 2); Pan, Yang (1, 2, 3); Zhou, Xiao-Hua (1); Liao, Xuan-Hong (1,
2); Meng, Xuan (1, 2); Xia, Jian-Wei (4)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Environment Biotechnology Research
Institute, Suzhou University of Science and Technology, Suzhou; 215009, China; (3)
Jiangsu Key Laboratory of Environment Science and Engineering, Suzhou; 215009, China; (4)
The Environment Emergency and Accident Investigation Center of Suzhou, Suzhou; 215002,
China
Corresponding author:Pan, Yang(panyang@mail.usts.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:276-282
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Using the hanging nylon as a biological carrier, a novel biofilm reactor was
adopted to treat synthetic wastewater, and the feasibility of cultivating and enriching a
high concentration of PAOs on this conventional biofilm within a short time was
investigated, which was proved from the aspects of reactor's operational efficiency, the
rate of phosphorus removal and the condition of PAOs enrichment. After 10d of operation,
the rate of orthophosphate removal was higher than 95% in aerobic phase and the
concentration of effluent COD was 50 mg·L<sup>-1</sup>or less in the reactor,which
was operated steadily for 50 d at this treatment level; after 48 d of operation, the
reactor's phosphorus uptake rate and release rate were increased from 3.4 mg·
(L·h)<sup>-1</sup>and 3.4 mg·(L·h)<sup>-1</sup>to 8 mg·
(L·h)<sup>-1</sup>and 6 mg·(L·h)<sup>-1</sup>,respectively, and the
aerobic and anaerobic cycles were shortened from equally 6 h to 2 h and 3 h,
respectively. The fluorescence in situ hybridization (FISH) test found that the PAOs'
abundance was increased from the original 48.96% to 70% on the 50th day, meanwhile the
PAOs showed reunite chunk state in hybrid figure, the thickness of biofilm measured by
direct microscopic process was about 28.9 μm, which all proved that the PAOs in
biofilm were at the end of the growth kinetics and the biofilm was mature. By hardening
culture for 50d, a high concentration of 70% in full organisms of PAOs could be enriched
in the conventional nylon filler, enabling the reactor to show a high efficiency in
removal of phosphorus and organic matter from sewage. © 2017, Science Press. All
right reserved.
Number of references:25
Main heading:Chemicals removal (water treatment)
Controlled terms:Biofilms - Biological water treatment - Blast enrichment - Carrier
concentration - Efficiency - Effluent treatment - Effluents - Fillers - Fish -
Fluorescence microscopy - Growth kinetics - Phosphorus - Polyamides - Rayon - Sewage -
Wastewater treatment
Uncontrolled terms:Biological carriers - Fluorescence in situ hybridization - Microscopic
process - Operational efficiencies - Orthophosphate removals - PAOs - Phosphorus removal
- Synthetic waste water
Classification code:445.1 Water Treatment Techniques - 452 Municipal and Industrial
Wastes; Waste Treatment and Disposal - 462.5 Biomaterials (including synthetics) - 701.1
Electricity: Basic Concepts and Phenomena - 804 Chemical Products Generally - 815.1.1
Organic Polymers - 819.2 Synthetic Fibers - 913.1 Production Engineering - 931.4
Quantum Theory; Quantum Mechanics
Numerical data indexing:Mass_Density 5.00e-02kg/m3, Percentage 4.90e+01% to 7.00e+01%,
Percentage 7.00e+01%, Percentage 9.50e+01%, Size 2.89e-05m, Time 1.08e+04s, Time 2.16e
+04s to 7.20e+03s
DOI:10.13227/j.hjkx.201607082
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 138>
Accession number:20171003416389
Title:Greenhouse gas fluxes at water-air interface in small pond using flux-gradient
method based on spectrum analyzer
Authors:Zhao, Jia-Yu (1, 2); Zhang, Mi (2); Xiao, Wei (2); Wang, Wei (2); Wu, Hong-Yan
(1); Zhang, Zhen (2); Xiao, Qi-Tao (2); Hu, Cheng (2); Yu, Zhou (2); Cao, Zheng-Da (2);
Xu, Jing-Zheng (2); Liu, Shou-Dong (2); Li, Xu-Hui (2)
Author affiliation:(1) School of Physics and Optoelectronic Engineering, Nanjing
University of Information Science and Technology, Nanjing; 210044, China; (2) Joint
International Research Laboratory of Climate and Environment Change, Collaborative
Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing
University of Information Science and Technology, Nanjing; 210044, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:41-51
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:As an important part of inland waters, small pond is a neglected source of
greenhouse gas. The main objective of the study was to quantify greenhouse gas fluxes
(CO<inf>2</inf>and CH<inf>4</inf>) from small pond in the Yangtze Delta using flux-
gradient method. The results showed that: ① zero-gradient test indicated that the
flux measurement precision for water vapor, CO<inf>2</inf>, and CH<inf>4</inf>was 7.525
W·m<sup>-2</sup>, 0.022 mg·(m<sup>2</sup>·s)<sup>-1</sup>, and 0.054
μg·(m<sup>2</sup>·s)<sup>-1</sup>, respectively. During the test period,
84%, 80%, and 94% of half-hourly flux data for H<inf>2</inf>O, CO<inf>2</inf>, and
CH<inf>4</inf>were higher than the zero-gradient measurement precision. ②Based on
the measurement, the small pond was the source of CO<inf>2</inf>and CH<inf>4</inf>for the
atmosphere in summer, the mean emission flux of CO<inf>2</inf>and CH<inf>4</inf>was 0.038
mg·(m<sup>2</sup>·s)<sup>-1</sup>and 0.889 μg·
(m<sup>2</sup>·s)<sup>-1</sup>, respectively. The CH<inf>4</inf>emission fluxes
from the small pond were more higher than the median value of emission for global lakes.
The results indicated that greenhouse gas emission from small pond was an important part
for estimating inland water greenhouse gas emissions, especially for
CH<inf>4</inf>emission. These results can provide scientific reference for making
emission inventory of regional greenhouse gas. © 2017, Science Press. All right
reserved.
Number of references:31
Main heading:Phase interfaces
Controlled terms:Carbon dioxide - Gas emissions - Gases - Gradient methods - Greenhouse
gases - Lakes - Spectrum analyzers
Uncontrolled terms:Eddy covariance method - Emission fluxes - Emission inventories - Flux
measurements - Flux-gradient methods - Greenhouse gas fluxes - Scientific references -
Water-air interface
Classification code:451.1 Air Pollution Sources - 801.4 Physical Chemistry - 804.2
Inorganic Compounds - 921.6 Numerical Methods
Numerical data indexing:Percentage 8.00e+01%, Percentage 8.40e+01%, Percentage 9.40e+01%,
Surface_Power_Density 7.53e+00W/m2
DOI:10.13227/j.hjkx.201605142
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 139>
Accession number:20171003416427
Title:Fractions transformation of heavy metals in compound contaminated soil treated with
biochar, montmorillonite and mixed addition
Authors:Gao, Rui-Li (1); Tang, Mao (1); Fu, Qing-Ling (1); Guo, Guang-Guang (1); Li, Xiao
(1); Hu, Hong-Qing (1)
Author affiliation:(1) College of Resources and Environment, Huazhong Agricultural
University, Wuhan; 430070, China
Corresponding author:Hu, Hong-Qing(hqhu@mail.hzau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:361-367
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A compound contaminated soil sampled from Lingxiang City, Hunan Province, was
used to investigate the effects of biochar (BC) and montmorillonite (MM) addition on
heavy metals fractions. The addition amounts of BC and MM were 1%, 2%, 5%, respectively,
and the mixture treatment was 1% BC+1% MM. BCR(European Community Bureau of Reference)
sequential extraction method was used to assess the fractions of heavy metals in soil
after incubation. The results indicated that adding BC alone significantly reduced the
available contents of Pb, Cu and Cd. Among montmorillonite treatments, MM5% treatment
decreased the weak acid extractable content of Cu, Pb, Zn, Cd by 27.6%, 19.2%, 25.6%,
19.2%, respectively. BC+MM treatment worked well, decreased the weak acid extractable
content of Cu,Pb, Zn, Cd by 15.8%, 15.9%, 13.1%, 12.0%, and increased the residual
content by 39.0%, 110.1%, 9.6%, 62.5%, significantly reducing the mobility of the four
elements. For the stabilization effect, MM treatment worked better than BC treatment, and
a combination of two amendments worked the best. © 2017, Science Press. All right
reserved.
Number of references:27
Main heading:Soil pollution
Controlled terms:Aluminum corrosion - Biochemistry - Clay minerals - Extraction - Heavy
metals - Lead - Soils - Stabilization - Zinc
Uncontrolled terms:Bioavailability - Contaminated soils - Continuous extraction -
European community bureau of references - Heavy metals in soil - Mixture treatments -
Sequential extraction method - Stabilization effects
Classification code:482.2 Minerals - 483.1 Soils and Soil Mechanics - 531 Metallurgy
and Metallography - 539.1 Metals Corrosion - 546.1 Lead and Alloys - 546.3 Zinc and
Alloys - 801.2 Biochemistry - 802.3 Chemical Operations
Numerical data indexing:Percentage 1.00e+00%, Percentage 1.10e+02%, Percentage 1.20e+01%,
Percentage 1.31e+01%, Percentage 1.58e+01%, Percentage 1.59e+01%, Percentage 1.92e+01%,
Percentage 2.00e+00%, Percentage 2.56e+01%, Percentage 2.76e+01%, Percentage 3.90e+01%,
Percentage 5.00e+00%, Percentage 6.25e+01%, Percentage 9.60e+00%
DOI:10.13227/j.hjkx.201606018
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 140>
Accession number:20171003409556
Title:Highly efficient bioflocculation of microalgae using Mucor circinelloides
Authors:Gu, Qiong (1); Jin, Wen-Biao (1); Chen, Yuan-Qing (1); Guo, Shi-Da (1); Wan,
Chao-Fan (1)
Author affiliation:(1) School of Civil and Environmental Engineering, Harbin Institute of
Technology Shenzhen Graduate School, Shenzhen; 518055, China
Corresponding author:Jin, Wen-Biao(13828830095@139.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:688-696
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Harvesting of microalgae is the major challenge in cost-efficient large-scale
microalgal biomass production due to their low concentration and small cell size in the
culture medium. The present paper aimed to study the efficiency of the filamentous fungus
Mucor circinelloides spores suspensions to harvest the green unicellular microalga
Chlorella pyrenoidosa grown in synthetic medium. Results showed that the optimal co-
culture conditions were pH=6.0, 1.25 g·L<sup>-1</sup>glucose and 1∶250 fungi
to microalgae ratio with harvest efficiency of 91.08%. In addition, the mentioned optimal
conditions could be applied for actual sewage with harvest efficiency of 92.33%.
Polysaccharide concentrations measured before and after 48 h of cultivation showed that
the polysaccharide of C. pyrenoidosa cultured alone was increased by 0.047
g·L<sup>-1</sup>, while co-cultured mixture showed increase in polysaccharides by
0.019 g·L<sup>-1</sup>. The recorded decrease in polysaccharides concentration in
the co-culture might be attributed to using of excreted polysaccharides by M.
circinelloides to grow, confirming the symbiotic association of both organisms.
Furthermore, with decreasing the pH, C. pyrenoidosa Zeta potential was stable, while it
was increased from -37.7 mV to -9.87 mV in M. circinelloides, which indicated that charge
neutralization was the mechanism of flocculation between algae and fungi. © 2017,
Science Press. All right reserved.
Number of references:16
Main heading:Algae
Controlled terms:Efficiency - Fungi - Harvesting - Mechanisms - Microorganisms -
Polysaccharides - Sewage
Uncontrolled terms:Charge neutralization - Chlorella pyrenoidosa - Filamentous fungi -
Mechanism of flocculation - Micro-algae - Mucor circinelloides - Symbiotic association -
Unicellular microalga
Classification code:452.1 Sewage - 461.9 Biology - 601.3 Mechanisms - 804.1 Organic
Compounds - 821.3 Agricultural Methods - 913.1 Production Engineering
Numerical data indexing:Mass_Density 1.25e+00kg/m3, Mass_Density 1.90e-02kg/m3,
Mass_Density 4.70e-02kg/m3, Percentage 9.11e+01%, Percentage 9.23e+01%, Time 1.73e+05s,
Voltage -9.87e-03V
DOI:10.13227/j.hjkx.201607217
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 141>
Accession number:20171003409566
Title:Effects of biochar pyrolyzed at varying temperatures on soil organic carbon and its
components: influence on the composition and properties of humic substances
Authors:Zhao, Shi-Xiang (1); Yu, Xiao-Ling (1); Li, Zhong-Hui (1); Yang, Yan (1); Zhang,
Xia (1); Wang, Xu-Dong (1, 2); Zhang, A-Feng (1)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) Key Laboratory Plant Nutrition and the Agri-
environment in Northwest China, Ministry of Agriculture, Yangling; 712100, China
Corresponding author:Wang, Xu-Dong(wangxudong01@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:769-782
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Application of biochar (BC) is an important way to increase soil organic carbon
sequestration. At the same time, the effect of BC on fractions and properties of soil
humic substances is concerned. A laboratory experiment was conducted to study the
influences of BC pyrolyzed at different temperatures on the composition and properties of
humic substances. The modified method for the extraction and fractionation of humic
substances was adopted in this work. The carbon (C) contents of Humin (Hu), Humic acids
(HA), Fulvic acids (FA) were analyzed by the thermal oxidation of
K<inf>2</inf>Cr<inf>2</inf>O<inf>7</inf>and TOC analyzer, and the optical properties of
HA and FA were measured by using spectrophotometer. The results showed that the
increasing temperature (from 300 to 600℃) decreased like-humic substances (LHS)
from 10.93 g·kg<sup>-1</sup>to 0.26 g·kg<sup>-1</sup>, while the structure
of theLHS tended to be complicated. Compared with control treatment (CK), the addition of
BC produced under 400℃ increased the contents of HA and FA (after 240 d incubation
a lower FA content was found in treatments) and increased as BC application rate
increased, after 360 d of incubation, BC300 and BC400 significantly increased by 69.93%
and 48.75% for HA (P<0.05), while decreased by 1.35% and 5.19% for FA. Higher contents
of HA and FA were found in soil samples amended with BC prepared at above 400℃ only
during the initial period of 3-10 d of incubation and increased as BC application rate
increased, at the end of the incubation, the contents of HA and FA significantly
decreased by 34.38%, 44.48% in BC500 treatments and 42.84%, 49.27% in the BC600
treatments (P<0.05). During the incubation, the addition of BC significantly increased
the contents of Hu (P<0.05), and the treatments amended with BC500 were the highest.
The addition of BC decreased the relative contents of HA and FA, while increased the
relative content of Hu, indicating that the proportion of relatively stable organic
carbon in the soil was increased. The ratio of HA/FA (H/F) varied between 0.88 and 2.52
and increased with decreasing pyrolysis temperature and increasing BC application. A
significantly lower color tonal coefficient (ΔlgK) and
E<inf>4</inf>/E<inf>6</inf>values in treatments amended with BC produced at temperatures
above 400℃, indicating that higher temperatures derived BC complicated the
structure of soil humic substance, while an opposite rend was observed in treatments
amended with BC produced at temperatures under 400℃. Considering the improvement of
the stability of organic carbon, when the BC products were applied to the Loutu soil,
500℃ was the optimal temperature for preparing apple-derived BC not only because it
could significantly increase the content of inert soil organic carbon, but also improve
the quality of the soil as a result of enhancing the degree of soil humification. ©
2017, Science Press. All right reserved.
Number of references:42
Main heading:Organic carbon
Controlled terms:Biological materials - Optical properties - Organic acids -
Photodegradation - Pyrolysis - Soils - Thermooxidation
Uncontrolled terms:Bio chars - Fulvic acids - Humic acid - Humic substances - Humin
Classification code:461.2 Biological Materials and Tissue Engineering - 483.1 Soils and
Soil Mechanics - 741.1 Light/Optics - 802.2 Chemical Reactions - 804.1 Organic
Compounds
Numerical data indexing:Percentage 1.35e+00%, Percentage 3.44e+01%, Percentage 4.28e+01%,
Percentage 4.45e+01%, Percentage 4.88e+01%, Percentage 4.93e+01%, Percentage 5.19e+00%,
Percentage 6.99e+01%
DOI:10.13227/j.hjkx.201604059
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 142>
Accession number:20171003416413
Title:Characteristics of perchlorate reduction and analysis of consortium structure in a
sulfur-based reactor at a high perchlorate concentration
Authors:Zhang, Chao (1); Tao, Hua-Qiang (2); Song, Yuan-Yuan (2); Lu, Cai-Cai (2); Guo,
Yan-Kai (1); Lian, Jing (1); Guo, Jian-Bo (2)
Author affiliation:(1) Pollution Prevention Biotechnology Laboratory of Hebei Province,
School of Environment Science and Engineering, Hebei University of Science and
Technology, Shijiazhuang; 050018, China; (2) Tianjin Key Laboratory of Aquatic Science
and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian
University, Tianjin; 300384, China
Corresponding author:Guo, Jian-Bo(jianbguo@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:247-252
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The effects of perchlorate concentration and hydraulic retention time (HRT) on
perchlorate reduction characteristics were investigated in a sulfur-based perchlorate
reduction reactor. The results showed that the perchlorate was completely removed at HRT
of 12 h and the influent perchlorate concentration ranged from 50 mg·L<sup>-
1</sup>to 194 mg·L<sup>-1</sup>; The perchlorate removal efficiency was 74% at HRT
of 4 h and the influent perchlorate concentration was 194 mg·L<sup>-1</sup>; The
yield of sulfate was increased by increasing the influent perchlorate concentration and
HRT; The influent pH and alkalinity was approximately 8.0 and 500 mg·L<sup>-
1</sup>CaCO<inf>3</inf>, and the effluent pH and alkalinity was approximately 6.7 and 100
mg·L<sup>-1</sup>CaCO<inf>3</inf>, respectively; The oxidation reduction potential
(ORP) ranged from -380 mV to -330 mV at the bottom of the reactor, however, ORP ranged
from -300 mV to -250 mV at the top of the reactor; The molecular biological analysis
showed that the microbial consortium structure was different along the flow path in the
reactor, Sulfurovum which is known to oxidize sulfur was decreased from 57.78% to 32.19%
and Hydrogenophilaceae which is known to oxidize hydrogen sulfide was increased from
4.35% to 22.24%. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Inorganic compounds
Controlled terms:Alkalinity - Calcium carbonate - Desulfurization - Hydrodesulfurization
- Oxidation - pH - pH effects - Redox reactions - Sulfur
Uncontrolled terms:Biological analysis - Hydraulic retention time - Microbial consortia -
Oxidation reduction potential - Perchlorate - Perchlorate concentration - Perchlorate
removal - Structure analysis
Classification code:801.1 Chemistry, General - 802.2 Chemical Reactions - 802.3
Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 1.00e-01kg/m3, Mass_Density 5.00e-01kg/m3,
Mass_Density 6.70e-03kg/m3, Mass_Density 8.00e-03kg/m3, Percentage 4.35e+00% to 2.22e
+01%, Percentage 5.78e+01% to 3.22e+01%, Percentage 7.40e+01%, Time 1.44e+04s, Time
4.32e+04s, Voltage -2.50e-01V, Voltage -3.30e-01V
DOI:10.13227/j.hjkx.201607010
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 143>
Accession number:20171003409563
Title:Effect of reclaimed water on bacterial community composition and function in urban
river sediment
Authors:Di, Yan-Ming (1, 2); Wang, Guang-Xuan (1, 2); Huang, Xing-Ru (1, 2); Guo, Xiao-Yu
(1, 2)
Author affiliation:(1) College of Resources Environment and Tourism, Capital Normal
University, Beijing; 100048, China; (2) Urban Environmental Processes and Digital
Modeling Laboratory, Beijing; 100048, China
Corresponding author:Guo, Xiao-Yu(xiaoyucnu@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:743-751
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to study the effect of reclaimed water on bacterial community
composition and function in urban river sediment, the changes of bacteria community
diversity, composition and function in Mayu wetland upon the supply of reclaimed water
were investigated by a range of sophisticated procedures, including Terminal Restriction
Fragment Length Polymorphism(T-RFLP), 16S rRNA clone library technology, and Real-time
Quantitative PCR Detecting System(qPCR).The results showed that carbon, nitrogen and
phosphorus were major factors driving the variation of bacterial diversity and community
structure in river sediment, and the bacteria were gradually recovered after purification
in downstream under the effect of artificial wetland. In addition, the bacterial
community in reclaimed water outfall was mainly constituted by β-Proteobacteria,
δ-Proteobacteria, Bacteroidales and Cyanobacteriain, and Ε-Proteobacteria,
Chloroflexi and Spirochaetes were unique groups. Besides, the major biological
geochemical cycle was nitrogen, carbon and phosphorus cycle in river sediment, which was
closely related to functional genes. There were about 45.9% of the clones related to
nitrogen cycle in reclaimed water outfall, such as Comamonas sp., higher than those of
upstream and downstream (27.7% and 23.4%), 17.9% of the clones were closely related to
the carbon cycle, such as Lysobacter sp., higher than those of upstream and downstream
(14.4% and 12.9%). Furthermore, the trace of pathogenic bacteria and antibiotics in
reclaimed water also changed the transformation pattern participating in carbon and
nitrogen cycle, for example, Rhodocyclus sp. conducted nitrogen fixation by
photosynthesis in reclaimed water outfall, whereas Burkholderia sp. fixes nitrogen by
ways of plants symbiotic nitrogen fixation in upstream and downstream. This research
provides theoretical reference for studies on remediation of reclaimed water supplying
river by artificial wetland. © 2017, Science Press. All right reserved.
Number of references:42
Main heading:Rivers
Controlled terms:Bacteria - Cloning - Forestry - Genes - Nitrogen - Nitrogen fixation -
Outfalls - Phosphorus - Polymerase chain reaction - Reclamation - RNA - Sediments -
Water resources - Wetlands
Uncontrolled terms:16S rRNA - Bacterial community - Functional genes - Re-claimed water -
T-RFLP - Urban river
Classification code:444 Water Resources - 452.1 Sewage - 461.2 Biological Materials
and Tissue Engineering - 461.8.1 Genetic Engineering - 483 Soil Mechanics and
Foundations - 801.2 Biochemistry - 802.2 Chemical Reactions - 804 Chemical Products
Generally
Numerical data indexing:Percentage 1.29e+01%, Percentage 1.44e+01%, Percentage 1.79e+01%,
Percentage 2.34e+01%, Percentage 2.77e+01%, Percentage 4.59e+01%
DOI:10.13227/j.hjkx.201606089
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 144>
Accession number:20171003416394
Title:Seasonal variation of colloid particles in the shallow well water of a small
watershed of purple soil
Authors:Zhang, Wei (1, 2); Tang, Xiang-Yu (2); Xian, Qing-Song (2, 3)
Author affiliation:(1) School of Tourism and Land Resource, Chongqing Technology and
Business University, Chongqing; 400067, China; (2) Key Laboratory of Mountain Surface
Processes and Ecological Regulation, Institute of Mountain Hazards and Environment,
Chinese Academy of Sciences, Chengdu; 610041, China; (3) University of Chinese Academy of
Sciences, Beijing; 100049, China
Corresponding author:Tang, Xiang-Yu(xytang@imde.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:87-94
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Colloids are the major carriers of various contaminants during the downward
transport into groundwater. To explore the long-term dynamics of colloid in the
groundwater and its influencing factors, a one-year monitoring of colloid concentration
and water physicochemical parameters was carried out in the shallow wells in a purple
soil dominated watershed in the hilly region of central Sichuan. The results indicated
that colloid concentrations within a year had a strong seasonal variation with the
coefficient of variation being larger than 0.5. The maximum of colloid mass concentration
could reach as high as 14.68 mg·L<sup>-1</sup>(the corresponding number
concentration being 1.34×10<sup>9</sup>L<sup>-1</sup>), which occurred in the non-
rainy season and was caused by the physical perturbations from water taken. Physical
perturbations of rainfall led to the distinct peaks of colloid concentrations in the well
water at the early stages of rainy season while it did not occur at the end of the rainy
season even upon heavy storm. Water chemistries (EC, Ca<sup>2+</sup>, Mg<sup>2+</sup>,
DOC) showed the dominant role in determining colloid concentrations and status in the
well. The facilitated transport of contaminants (i.e. pesticides and heavy metals) due to
the increased colloids in the shallow well water at the early stages of rainy season
would potentially pose a great threat to the drinking water safety in the study area.
Therefore, it is strongly suggested to increase the monitoring frequencies in terms of
colloid concentrations and well water physicochemical parameters following the large
rainfall events during this period. © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Colloids
Controlled terms:Groundwater - Groundwater pollution - Heavy metals - Particle size -
Particle size analysis - Potable water - Rain - Soils - Surface waters - Water -
Watersheds
Uncontrolled terms:Coefficient of variation - Colloid concentration - Facilitated
transport - Mass concentration - Number concentration - Physicochemical parameters -
Purple soils - Seasonal dynamics
Classification code:443.3 Precipitation - 444 Water Resources - 483.1 Soils and Soil
Mechanics - 531 Metallurgy and Metallography - 801.3 Colloid Chemistry - 951 Materials
Science
Numerical data indexing:Mass_Density 1.47e-02kg/m3
DOI:10.13227/j.hjkx.201607070
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 145>
Accession number:20171003416410
Title:Effect of PVDF hollow fiber ultrafiltration membranes modification with
carbonnanotube on membrane fouling control during ultrafiltration of sewage effluent
Authors:Wang, Li-Ying (1); Shi, Jie (1); Wang, Kai-Lun (1); Guan, Yu-Qi (1); Guo, Jin (1)
Author affiliation:(1) School of Environmental and Energy Engineering, Beijing University
of Technology, Beijing; 100124, China
Corresponding author:Guo, Jin(guojin@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:220-228
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The modification of hollow fiber ultrafiltration membranes with carbon nanotube
(CNTs) on fouling control was investigated. Considering the antifouling ability of the
CNT-modified membranes and the stability of CNTs layer, several factors were analyzed and
evaluated, including the concentration of ethanol-dispersion, the diameter of CNTs, and
the loading mass of CNTs. Besides, DOC, UV<inf>254</inf>, and fluorescence
characteristics of the permeate from the CNT-modified membrane were analyzed. The results
revealed that the optimal modification method included a 50%(volume fraction) ethanol-
dispersion,a 30-50 nm diameter-CNTs, and 3 g·m<sup>-2</sup>CNTs' loading. Compared
with the virgin membrane, the removal rates of DOC and UV<inf>254</inf>by the CNT-
modified membrane were increased by 37% and 56%, respectively. Meanwhile, it was proved
that the humic-like and protein-like materials were more easily removed by the CNT-
modified membrane. © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Carbon nanotubes
Controlled terms:Ethanol - Membrane fouling - Membranes - Nanotubes - Sewage -
Ultrafiltration - Yarn
Uncontrolled terms:Anti-fouling ability - Fluorescence characteristics - Fouling control
- Membrane modification - Modification methods - Modified membranes - Sewage effluents -
Ultra-filtration membranes
Classification code:452.1 Sewage - 761 Nanotechnology - 802.3 Chemical Operations -
804.1 Organic Compounds - 819.4 Fiber Products - 951 Materials Science
Numerical data indexing:Percentage 3.70e+01%, Percentage 5.60e+01%, Size 3.00e-08m to
5.00e-08m
DOI:10.13227/j.hjkx.201603008
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 146>
Accession number:20171003409539
Title:Response of the water quality of a stratified reservoir to an extreme El
Niño event during summer
Authors:Qiu, Xiao-Peng (1); Huang, Ting-Lin (1); Zeng, Ming-Zheng (1); Shi, Jian-Chao
(1); Cao, Zhan-Hui (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Corresponding author:Huang, Ting-Lin(huangtinglin@xauat.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:547-554
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Global warming can intensify the El Niño phenomenon that recurs every 2-7
years, which will lead to a great interannual variability of climate and may induce the
deterioration of the water quality of reservoirs. To study the influence of the extreme
El Niño events on the water quality of stratified reservoirs during summer, field
surveys were conducted in Zhoucun Reservoir and its inflow rivers from May to August in a
normal year (2012) and a strong El Niño year (2015). Temporal variations of
physical and chemical index were investigated during monitoring. The results showed that
the Zhoucun Reservoir was stratified during the study period. The precipitation in the
summer of the normal year was significantly higher than that in the El Niño year
at the same period. In the summer of the normal year, the water level increased from
124.26 m to 127.14 m and the hypolimnion thickness increased by 3.1 m. However, in 2015,
the rapid decrease of the water level from May to August (from 121.65 m to 119.46 m) led
to the decrease of the hypolimnion thickness (by 3.2 m). The inflow rivers belonged to
surface current and its nutrients concentrations were obviously higher than those in the
epilimnion. The inflow nutrients loads increased significantly in the summer of the
normal year, as a result, total nitrogen increased from 1.00 mg·L<sup>-1</sup>to
2.06 mg·L<sup>-1</sup>, nitrate increased from 0.19 mg·L<sup>-1</sup>to
1.28 mg·L<sup>-1</sup>, and total phosphorus increased from 0.023
mg·L<sup>-1</sup>to 0.088 mg·L<sup>-1</sup>in the lacustrine zone of the
reservoir. In contrast, the nutrients concentrations changed little in the summer of the
El Niño year due to the decrease in runoff. Nonetheless, the reducing pollutants
concentrations of the hypolimnion in the El Niño year were significantly higher
than those in the normal year, which may be due to the temporal variations of hypolimnion
thicknesses. The maximum concentrations of iron, manganese, ammonium and sulfide in the
summer of the El Niño year were 0.38, 1.36, 2.36 and 1.67 mg·L<sup>-
1</sup>, respectively. All these index exceeded the standards for surface water Class
III. We conclude that the extreme El Niño event has an apparent influence on the
nutrients concentrations in the epilimnion and the pollutants concentrations in the
hypolimnion in Zhoucun Reservoir. © 2017, Science Press. All right reserved.
Number of references:34
Main heading:River pollution
Controlled terms:Global warming - Nickel - Nutrients - Pollution - Reservoirs (water) -
Surface waters - Temperature distribution - Thermal stratification - Water levels - Water
quality
Uncontrolled terms:Chemical indices - Hypolimnion - Interannual variability - Maximum
concentrations - Nutrients concentrations - Stratified reservoirs - Temporal variation -
Total phosphorus
Classification code:441.2 Reservoirs - 443.1 Atmospheric Properties - 444.1 Surface
Water - 445.2 Water Analysis - 453 Water Pollution - 548.1 Nickel - 641.1
Thermodynamics
Numerical data indexing:Age 2.00e+00yr to 7.00e+00yr, Mass_Density 1.00e-03kg/m3 to
2.06e-03kg/m3, Mass_Density 1.67e-03kg/m3, Mass_Density 1.90e-04kg/m3 to 1.28e-03kg/m3,
Mass_Density 2.30e-05kg/m3 to 8.80e-05kg/m3, Mass_Density 2.36e-03kg/m3, Size 1.22e+02m
to 1.19e+02m, Size 1.24e+02m to 1.27e+02m, Size 3.10e+00m, Size 3.20e+00m
DOI:10.13227/j.hjkx.201608001
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 147>
Accession number:20171003416395
Title:Deposition characteristics of suspended solids and the response of dissolved
nutrients in spring in the western lakeside of Taihu Lake
Authors:Qi, Chuang (1); Wang, Guo-Xiang (2, 3); Wu, Xin-Ting (2); Xu, Xiao-Guang (2, 3);
Han, Rui-Ming (2, 3); Wu, Song-Jun (2)
Author affiliation:(1) School of Geography Science, Nanjing Normal University, Nanjing;
210097, China; (2) School of Environment, Nanjing Normal University, Nanjing; 210097,
China; (3) Jiangsu Center for Collaborative Innovation in Geographical Information
Resource Development and Application, Jiangsu Key Laboratory of Environmental Change and
Ecological Construction, Institute of Water Environmental Eco-remediation, Nanjing;
210023, China
Corresponding author:Wang, Guo-Xiang(wangguoxiang@njnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:95-103
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To reveal the spatiotemporal characteristics of nutrients in the deposition
process of suspended solids in lakeside zone, in situ deposition tests were performed in
the western lakeside of Taihu Lake, and the contents of TP, TN, NH<inf>4</inf><sup>
+</sup>-N and NO<inf>3</inf><sup>-</sup>-N were measured and analyzed. The results showed
that the deposition fluxes in the western lakeside of Taihu Lake ranked as follows:
artificial reed areas>non-vegetation nearshore areas>natural reed areas>non-
vegetation offshore areas, with their average values of (1 383.40±925.60), (1
208.67±743.50), (278.72±142.53), (245.58±154.25) g·
(m<sup>2</sup>·d)<sup>-1</sup>, respectively. From the 6th day, the deposition
volume steadily increased, with the deposition rate larger than the decomposition rate.
Through the 15-day continuous in situ observation, the content of TP in nearshore zone
was 2-3 folds larger than that of offshore zone, and the content of NH<inf>4</inf><sup>
+</sup>-N was significantly different from that of NO<inf>3</inf><sup>-</sup>-N in the
settlement bottle (P<0.01). The deposition volume was significantly and positively
correlated to both TN and NH<inf>4</inf><sup>+</sup>-N contents in the water column
(P<0.01, n=42), suggesting that the TN and NH<inf>4</inf><sup>+</sup>-N contents in
the overlying water increased with the deposition fluxes. The correlation coefficient
between TN and NH<inf>4</inf><sup>+</sup>-N was 0.84, implicating that the increase of
deposition flux may accelerate the mutual transformation between different forms of
nitrogen. These findings should be taken into account in the current control of black
blooms and nutrient management in Taihu Lake. © 2017, Science Press. All right
reserved.
Number of references:49
Main heading:Deposition
Controlled terms:Bottles - Deposition rates - Lakes - Nutrients - Vegetation
Uncontrolled terms:Correlation coefficient - Deposition characteristics - Deposition
fluxes - In-situ observations - Lakeside - Mutual transformations - Spatiotemporal
characteristics - Taihu lakes
Classification code:694.2 Packaging Materials - 802.3 Chemical Operations
Numerical data indexing:Age 4.11e-02yr
DOI:10.13227/j.hjkx.201607102
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 148>
Accession number:20171003409568
Title:Comparative analysis on effect of wheat straw and its biochar amendment on net
global warming potential under wheat-maize rotation ecosystem in the Guanzhong Plain
Authors:Cheng, Gong (1, 3); Chen, Jing (1, 3); Liu, Jing-Jing (2); Zhang, A-Feng (1, 3);
Wang, Xu-Dong (1, 3); Feng, Hao (2); Zhao, Ying (1)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) College of Water Resources and Architectural
Engineering, Northwest A&F University, Yangling; 712100, China; (3) Key Laboratory of
Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture,
Yangling; 712100, China
Corresponding author:Zhang, A-Feng(zhangafeng@nwsuaf.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:792-801
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to compare the differences in carbon sequestration and greenhouse gas
mitigation between straw and straw-derived biochar amendment, a field experiment was
conducted with simultaneous measurement of carbon dioxide (CO<inf>2</inf>), methane
(CH<inf>4</inf>) and nitrous oxide (N<inf>2</inf>O) emissions, crop yield, soil organic
carbon (SOC) content and net global warming potential (NGWP) in a wheat-maize rotation
cropping system from the loess plateau of China. Five treatments were included: control
(no straw incorporation, no straw-derived biochar amendment and no fertilization, CK),
fertilization (no straw incorporation and no straw-derived biochar amendment, F), straw
with fertilization (wheat straw incorporated at 8 t·hm<sup>-2</sup>, FS), low
straw-derived biochar (8 t·hm<sup>-2</sup>) with fertilization (FBlow) and high
straw-derived biochar (16 t·hm<sup>-2</sup>) with fertilization (FBhigh). Wheat
yield increased by 30.9%, 66.3% and 36.6% under FS, FBlow and FBhigh treatment, as
compared to the F treatment, respectively. However, maize yield decreased by 14.1%, 18.0%
and 24.6% under FS, CK and FBhigh treatment as compared to the F treatment, respectively.
There was no significant difference between FBlow and F treatment. Annual
CO<inf>2</inf>emission increased by 60.2% under FS treatment, but decreased by 14.4%
under FBhigh treatment as compared to the F treatment, respectively. Annual
N<inf>2</inf>O emission decreased by 27.6% and 38.7% under FBlow and FBhigh treatment as
compared to the F treatment, respectively. However, no significant difference was
observed under straw application. Overall, the NGWP decreased by 24.13 and 58.44
t·hm<sup>-2</sup>under FBlow and FBhigh treatment as compared to the F treatment,
respectively. And the NGHGI decreased by 1.78 and 5.06 t·t<sup>-1</sup>under FBlow
and FBhigh treatment as compared to the F treatment, respectively. In summary, we
conclude that the fertilization with 16 t·hm<sup>-2</sup>biochar amendment can be
used as an effective management to improve the crop yield and reduce the net global
warming potential under the wheat-maize rotation system. © 2017, Science Press. All
right reserved.
Number of references:44
Main heading:Organic carbon
Controlled terms:Agriculture - Carbon dioxide - Crops - Gas emissions - Global warming -
Greenhouse gases - Nitrogen oxides - Rotation - Soil surveys - Straw
Uncontrolled terms:Bio chars - Global warming potential - Soil organic carbon - Wheat
straws - Wheat-maize rotation system
Classification code:443.1 Atmospheric Properties - 451.1 Air Pollution Sources - 483.1
Soils and Soil Mechanics - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 821
Agricultural Equipment and Methods; Vegetation and Pest Control - 931.1 Mechanics
Numerical data indexing:Percentage 1.41e+01%, Percentage 1.44e+01%, Percentage 1.80e+01%,
Percentage 2.46e+01%, Percentage 2.76e+01%, Percentage 3.09e+01%, Percentage 3.66e+01%,
Percentage 3.87e+01%, Percentage 6.02e+01%, Percentage 6.63e+01%
DOI:10.13227/j.hjkx.201607071
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 149>
Accession number:20172603860996
Title:Characteristics and Influencing Factors of Biologically-based Phosphorus Fractions
in the Farmland Soil
Authors:Cai, Guan (1, 2); Hu, Ya-Jun (3); Wang, Ting-Ting (3); Yuan, Hong-Zhao (2, 3);
Wang, Jiu-Rong (2, 3); Li, Qiao-Yun (1); Ge, Ti-Da (3); Wu, Jin-Shui (3)
Author affiliation:(1) College of Bioscience and Biotechnology, Hunan Agricultural
University, Changsha; 410128, China; (2) Public Service Technology Center, Institute of
Subtropical Agriculture, Chinese Academy of Sciences, Changsha; 410125, China; (3) Key
Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical
Agriculture, Chinese Academy of Sciences, Changsha; 410125, China
Corresponding author:Li, Qiao-Yun(1753994368@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1606-1612
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A suitable fractionation method of phosphorus (P) is a key to effective
assessment of soil P componential features. Here a new biologically-based P (BBP) method
was used to evaluate the P fractions in the upland and paddy soils across large-scale
area in China. The soil P was divided into four components: (1) soluble or rhizosphere-
intercepted (CaCl<inf>2</inf>-P), (2)organic acid activated and inorganic weakly bound
(Citrate-P), (3) enzyme mineralization of organic P (Enzyme-P), (4)potential activation
of inorganic P (HCl-P). Then, the relationships between biologically-based P fractions
and standard Olsen-P were investigated, and driving factors of P fractions were
identified. The results showed that P content was in order of HCl-P>Citrate-
P>Enzyme-P>CaCl<inf>2</inf>-P. All P components of upland soil displayed higher
levels than those of paddy soil. Moreover, the P components were highly positively
correlated with the Olsen-P, suggesting that each P component contributed to soil P
availability. However, it was found that Olsen-P was most highly correlated with
CaCl<inf>2</inf>-P and Enzyme-P (R<sup>2</sup>=0.359; R<sup>2</sup>=0.386) in upland
soil, while Olsen-P was most highly with Citrate-P (R<sup>2</sup>=0.788) in paddy soil.
This result indicated that available P of upland soil was mainly from organic P
mineralization and soluble P, and available P in paddy soil was mainly from inorganic P
activation. Redundancy analysis (RDA) showed that the P components were mainly affected
by soil pH and silt content, which suggested that it could enhance the P availability via
regulating soil pH in the agricultural activities. © 2017, Science Press. All right
reserved.
Number of references:27
Main heading:Soils
Controlled terms:Chemical activation - Enzymes - Landforms - Mineralogy - Phosphorus
Uncontrolled terms:Bio-availability - Environmental factors - Paddy soils - Phosphorus
fractionation - Upland soil
Classification code:481.1 Geology - 482 Mineralogy - 483.1 Soils and Soil Mechanics -
804 Chemical Products Generally
DOI:10.13227/j.hjkx.201608178
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 150>
Accession number:20172603860786
Title:Brief Introduction of Pollution Sites Remediation and Risk Assessment and Its
Policy Making in United States
Authors:Rong, Yue (1)
Author affiliation:(1) California Regional Water Quality Control Board, Los Angeles
Region, Los Angeles; CA; 90013, United States
Corresponding author:Rong, Yue(Yrong20373@aol.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1726-1732
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Site remediation has become an imperative part of environmental protection in
China due to recent economic development, urban spreading, new industries replacing old
ones, relocation of old industrial sites, and increased environmental conscience. This
paper mainly introduced the concept, method, calculation, risk assessment and management
for polluted sites remediation based on experience from California, USA. Further, the
paper presented the concept of vapor intrusion and how to use vapor intrusion methodology
to determine site remediation standard. Mathematical modeling approaches were also
discussed in terms of how to determine the residual pollutant concentrations in soil and
how to calculate indoor vapor concentrations. Based on risk assessment, California
Environmental Protection Agency, Water Resources Control Board issued a 'Low Threat
Underground Storage Tank Case Closure Policy'for impacted underground storage tank sites.
The numerical criteria in the Policy were based on calculations of human health risk
assessment. Finally, a real case study in California, USA, was presented to demonstrate
how the risk assessment calculations were applied in polluted site remediation, which
helps to answer the question of 'how clean is clean'. © 2017, Science Press. All
right reserved.
Number of references:8
Main heading:Land reclamation
Controlled terms:Environmental protection - Environmental Protection Agency - Groundwater
resources - Health risks - Indoor air pollution - Mercury (metal) - Pollution - Risk
assessment - Risks - Soil pollution - Tanks (containers) - Urban growth - Water
resources
Uncontrolled terms:Polluted sites - Site cleanup - Site remediation - Soil gas samplings
- Vapor intrusion
Classification code:403.1 Urban Planning and Development - 442.2 Land Reclamation - 444
Water Resources - 444.2 Groundwater - 451 Air Pollution - 454.2 Environmental Impact
and Protection - 461.7 Health Care - 483.1 Soils and Soil Mechanics - 549.3 Nonferrous
Metals and Alloys excluding Alkali and Alkaline Earth Metals - 619.2 Tanks - 914.1
Accidents and Accident Prevention
DOI:10.13227/j.hjkx.201612068
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 151>
Accession number:20172603860997
Title:Effect of Straw Application on the Dynamics of Exogenous Nitrogen and Microbial
Activity in Paddy Soil
Authors:Chen, Shan (1, 2); Ding, Xian-Qing (1, 2); Zhu, Zhen-Ke (2); Wang, Juan (2);
Peng, Pei-Qin (1); Ge, Ti-Da (2); Wu, Jin-Shui (2)
Author affiliation:(1) College of Environmental Science and Engineering, Central South
University of Forestry and Technology, Changsha; 410004, China; (2) Key Laboratory of
Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture,
Chinese Academy of Sciences, Changsha; 410125, China
Corresponding author:Peng, Pei-Qin(pqpeng123@sina.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1613-1621
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Returning straw to the field provides an important source of fertilizer that can
increase soil fertility. However, the rate of straw carbon utilization is low and large
amounts of greenhouse gases are emitted due to the high carbon to nitrogen ratio of the
straw mass. In this regard, the application of inorganic nitrogen and phosphate
fertilizers can control the ratio of elements in the soil, increase the activity of
microorganisms and their utilization of elements, and promote the improvement of soil
fertility. In this study, straw application conditions were simulated, and inorganic
nitrogen fertilizer labeled with<sup>15</sup>N was added to examine the effects of
different nutrient fertilizer additions on the transformation and distribution of
exogenous nitrogen in the soil, and also the characteristics of the microbial response.
The results showed that application of straw increased the contents of ammonia nitrogen
and total nitrogen in the soil and soil solution. When both straw and inorganic nitrogen
fertilizer were applied, the<sup>15</sup>N-TN in the soil remained at 28 to 33 μg
during the 100-day culture phase. In contrast,<sup>15</sup>N-NH<inf>4</inf><sup>
+</sup>increased gradually during the initial 30 days of the culture phase, but
subsequently decreased gradually. Application of phosphate increased the contents
of<sup>15</sup>N-TN and<sup>15</sup>N-NH<inf>4</inf><sup>+</sup>in the soil, but
decreased the content of<sup>15</sup>N in the soil solution by 28%. The distribution of
inorganic nitrogen in the soil showed that the proportion of<sup>15</sup>N in the soil
remained at 52%-61%. Addition of phosphate fertilizer increased the distribution ratio
of<sup>15</sup>N in the soil by up to 16.5%, whereas the proportion of<sup>15</sup>N in
the soil solution decreased from 36% on the fifth day to 30% on the 100<sup>th</sup>day,
thereby the loss amount of<sup>15</sup>N reduced by 1.2-fold. Addition of straw promoted
microbial activity and significantly increased the microbial biomass nitrogen (MBN)
content of the soil. Addition of inorganic fertilizer further promoted the microbial
activity of the soil. After the 100-day culture experiment, the addition of straw,
inorganic nitrogen, and phosphate fertilizer increased MBN to between 2.0-fold and 2.2-
fold that of the control treatments. Addition of phosphate fertilizer increased the
utilization of<sup>15</sup>N by microorganisms, so that the amount of<sup>15</sup>N-MBN
was 1.5-fold higher than that of treatments where only straw and nitrogen fertilizer were
added. Examination of soil enzyme activity showed that nitrogen fertilizer reduced soil
enzyme activity and substrate affinity. When both nitrogen and phosphate fertilizers were
added, the enzyme activity was 48.1% higher than that when only straw was added. The
findings of this study thus provide a theoretical basis for furthering our understanding
on the nitrogen cycle of the paddy soil ecosystem, the improvement of soil fertility, and
the reduction of greenhouse gas emissions. © 2017, Science Press. All right
reserved.
Number of references:50
Main heading:Nitrogen
Controlled terms:Enzyme activity - Enzymes - Fertilizers - Gas emissions - Greenhouse
gases - Mathematical transformations - Microorganisms - Nitrogen fertilizers - Phosphate
fertilizers - Soil moisture - Soils
Uncontrolled terms:<sup>15</sup>N tracing - Control treatments - Inorganic fertilizers -
Inorganic nitrogen - Microbe - Microbial activities - Microbial response - Soil enzyme
activity
Classification code:451.1 Air Pollution Sources - 461.9 Biology - 483.1 Soils and Soil
Mechanics - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 921.3
Mathematical Transformations
Numerical data indexing:Age 2.74e-01yr, Age 8.22e-02yr, Mass 2.80e-08kg to 3.30e-08kg,
Percentage 1.65e+01%, Percentage 2.80e+01%, Percentage 3.00e+01%, Percentage 3.60e+01%,
Percentage 4.81e+01%, Percentage 5.20e+01% to 6.10e+01%
DOI:10.13227/j.hjkx.201609219
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 152>
Accession number:20172703864530
Title:Fractionation and Contamination Assessment of Metal Elements in the Surface
Sediments of Yundang Lagoon in Xiamen
Authors:Yang, Qiu-Li (1, 2); Yu, Rui-Lian (1); Hu, Gong-Ren (1, 2); Lin, Cheng-Qi (1);
Han, Lu (1)
Author affiliation:(1) College of Chemical Engineering, Huaqiao University, Xiamen;
361021, China; (2) State Key Laboratory of Environmental Geochemistry, Institute of
Geochemistry, Chinese Academy of Sciences, Guiyang; 550081, China
Corresponding author:Yu, Rui-Lian(ruiliany@hqu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1010-1017
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Total concentrations of 15 metal elements in the surface sediments of Yundang
Lagoon in Xiamen were determined using ICP-MS. The fractions were extracted by a modified
BCR method. The results indicated that in different areas of Yundang Lagoon, the order of
the concentrations of Cd, Cu, Sr, Pb, Zn and U was: outer lagoon>ditch>inner
lagoon, the order for Cr, Co, Ni, V, Fe, Li, Rb and Mn was: inner lake>outer
lake>ditch. Cu, Zn and Pb were mainly in the reducible phase; Cd was mainly in the
acid soluble-extractable and reducible phases; Co, Ni, U, Fe and Mn were mainly in the
reducible and residual phases; Li, V, Cr, Rb and Ba were dominated by residual phase. The
potential ecological risk of metal elements suggested that V, Cr, Co, Ni, Zn, Cu, Cd and
Pb were at a low potential ecological risk level. The results of ratio of secondary phase
to primary phase (RSP) assessment indicated that Cu, Cd and Zn showed high pollution
level; Pb showed moderate pollution level; Co, Mn, Sr and U were in a low polluted
condition; Ni, Fe, Cr, V, Li, Ba and Rb showed no pollution. In general, Yundang Lagoon
was in a low potential ecological risk. © 2017, Science Press. All right reserved.
Number of references:22
Main heading:Copper
Controlled terms:Cadmium - Ecology - Lake pollution - Lakes - Lead - Lithium - Manganese
- Metals - Nickel - Pollution - Rubidium - Sediments - Surficial sediments - Zinc
Uncontrolled terms:Assessment - Contamination assessment - Fractions - Metal elements -
Potential ecological risk - Reducible phasis - Surface sediments - Yundang lagoons
Classification code:453 Water Pollution - 454.3 Ecology and Ecosystems - 483 Soil
Mechanics and Foundations - 543.2 Manganese and Alloys - 544.1 Copper - 546.1 Lead and
Alloys - 546.3 Zinc and Alloys - 548.1 Nickel - 549.1 Alkali Metals - 549.3
Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals
DOI:10.13227/j.hjkx.201607125
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 153>
Accession number:20172703864560
Title:Effects of Lithology on the Abundance and Composition of Soil Nitrogen-fixing
Bacteria and Arbuscular Mycorrhizal Fungal Communities in Karst Shrub Ecosystem
Authors:Liang, Yue-Ming (1, 2); Su, Yi-Rong (1); He, Xun-Yang (1); Chen, Xiang-Bi (1)
Author affiliation:(1) Key Laboratory of Agro-ecological Processes in Subtropical Region,
Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha; 410125,
China; (2) Key Laboratory of Karst Dynamics, Institute of Karst Geology, Chinese Academy
of Geological Sciences, Guilin; 541004, China
Corresponding author:Su, Yi-Rong(yrsu@isa.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1253-1261
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Lithology is a key factor when used to restore vegetation in karst degraded
ecosystems, and arbuscular mycorrhizal (AM) fungi and nitrogen-fixing bacteria play an
important role in improving plant growth. However, little information is available
regarding the effects of lithology on these two groups of microorganisms. To test whether
these microbial communities are impacted by lithology, the abundance and composition of
soil AM fungal and nitrogen-fixing bacteria communities were determined through terminal
restriction fragment length polymorphism (T-RFLP) and real-time fluorescence-based
quantitative PCR (real-time PCR). Three types of lithology (dolomite, limestone and
dolomite-limestone) were selected in this study. The diversity, richness, and evenness of
plant species were evaluated through field surveys and soil properties were measured. The
results showed that the abundances of soil nitrogen-fixing bacteria and arbuscular
mycorrhizal fungal communities were significantly influenced by lithology. The abundances
of these two groups of microorganisms were the lowest in dolomite soil, inferior to
dolomite-limestone soil, while highest in limestone soil. Similarly, the composition of
soil nitrogen-fixing bacteria and AM fungi communities varied among lithology. A
significant linear correlation was observed among soil organic carbon, available
phosphorus, clay content and nitrogen-fixing bacterial abundance (P<0.05), and a
significant linear correlation among total nitrogen, clay content and AM fungal abundance
(P<0.05). Redundancy analysis showed that the composition of nitrogen-fixing bacterial
community was closely linked to plant evenness, and the AM fungal community composition
was closely linked to plant diversity (plant evenness, Shannon-wiener and richness).
These results indicated that lithology influenced the abundances and compositions of soil
nitrogen-fixing bacteria and arbuscular mycorrhizal (AM) fungal communities mainly
through plant and soil properties. © 2017, Science Press. All right reserved.
Number of references:53
Main heading:Bacteria
Controlled terms:Carbon - Ecology - Ecosystems - Forestry - Fungi - Landforms - Limestone
- Lithology - Microorganisms - Nitrogen - Nitrogen fixation - Organic carbon -
Polymerase chain reaction - Soil testing - Soils
Uncontrolled terms:Arbuscular mycorrhizal - Arbuscular mycorrhizal fungi - Community
structures - Fungal community compositions - Karst - Microbial communities - Nitrogen
fixing bacteria - Terminal restriction fragment length polymorphisms
Classification code:454.3 Ecology and Ecosystems - 461.9 Biology - 481.1 Geology -
483.1 Soils and Soil Mechanics - 801.2 Biochemistry - 802.2 Chemical Reactions - 804
Chemical Products Generally - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201606215
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 154>
Accession number:20172703864521
Title:Magnetic Characteristics and Environmental Pollution Analysis of Street Dust in
Different Functional Zones of Xi'an City
Authors:Fang, Ni (1); Zhang, Jun-Hui (1); Wang, Jin (1); Jiang, Shan (1); Xia, Dun-Sheng
(2)
Author affiliation:(1) Shaanxi Key Laboratory of Disasters Monitoring & Mechanism
simulation, Baoji University of Arts and Sciences, Baoji; 721016, China; (2) Key
Laboratory of Western China's Environmental Systems, Ministry of Education, Lanzhou
University, Lanzhou; 730000, China
Corresponding author:Zhang, Jun-Hui(bwlzjh@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:924-935
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Urban environmental pollution can be revealed by the magnetic characteristics of
street dust. Environmental magnetic measurements were carried out for the 151 samples of
street dust collected in different functional zones of Xi'an city. Magnetic
susceptibility varied within the range between 169.5×10<sup>-
8</sup>m<sup>3</sup>·kg<sup>-1</sup>and 977.48×10<sup>-
8</sup>m<sup>3</sup>·kg<sup>-1</sup>, and the χ<inf>lf</inf>average value was
415.66×10<sup>-8</sup>m<sup>3</sup>·kg<sup>-1</sup>, which was 10 times
higher than that of the background value. Isothermal remanent magnetization varied within
the range between 2005.31×10<sup>-5</sup>A·m<sup>2</sup>·kg<sup>-
1</sup>and 10897.64×10<sup>-5</sup>A·m<sup>2</sup>·kg<sup>-1</sup>,
and the SIRM average value was 5105.99×10<sup>-
5</sup>A·m<sup>2</sup>·kg<sup>-1</sup>. The average value of frequency-
dependent magnetic susceptibility was 1.30, which was extremely low. The SIRM curve was
consistent with χ<inf>lf</inf>curve. The results indicated a high concentration of
magnetic minerals in street dust. The magnetic minerals were mainly low-coercivity
ferrimagnetic (magnetite and maghemite) and anti-ferromagnetic minerals (hematite), which
contributed to the magnetic susceptibility. The main domains of magnetic minerals were
composed of multiple domain (MD) and pseudo-single domain (PSD) ferrimagnetic minerals
demonstrating the pollution of environment. According to the spatial distribution of
magnetic properties of street dust and the different functional zones of Xi'an city,
seven districts (A, B, C, D, E, F and G areas) were divided, which were summarized as
three pollution types: heavily polluted, moderately polluted and lightly polluted. In the
ecological district of Baqiao (F area) which was heavily polluted, χ<inf>lf</inf>,
SIRM and soft values were all the highest in the seven areas, and the main pollution
sources were industry and vehicle emission. χ<inf>lf</inf>, SIRM and soft values were
slightly higher in the high-tech industrial district (A area) and the central business
and commerce district (B area), which was moderately polluted by industry and vehicle
emission. However, the magnetic parameters were relatively low in the functional zones of
education, tourism and culture (C, D, E and G area), demonstrating that these areas were
only slightly polluted by vehicle emission. © 2017, Science Press. All right
reserved.
Number of references:45
Main heading:Magnetic levitation vehicles
Controlled terms:Air pollution - Dust - Ferrimagnetism - Industrial emissions - Magnetic
domains - Magnetic properties - Magnetic susceptibility - Magnetism - Minerals -
Pollution - Vehicles
Uncontrolled terms:Environmental pollutions - Ferrimagnetic minerals - Functional zones -
Isothermal remanent magnetization - Magnetic characteristic - Pseudo single domains -
Street dust - Xi'an cities
Classification code:451 Air Pollution - 451.1 Air Pollution Sources - 482.2 Minerals -
701.2 Magnetism: Basic Concepts and Phenomena
DOI:10.13227/j.hjkx.201604074
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 155>
Accession number:20172703864544
Title:A New Model for the Treatment of Low Ammonia Nitrogen Wastewater by CANON Process
Authors:Wanyan, De-Qing (1, 2); Yuan, Yi (1, 2); Li, Xiang (1, 2); Bi, Zhen (1, 2)
Author affiliation:(1) School of Environment Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Institute of Environmental
Biotechnology, Suzhou University of Science and Technology, Suzhou; 215009, China
Corresponding author:Yuan, Yi(yiyuansuzhou@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1122-1129
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Automatic aeration and recirculation of effluent were used to start CANON
process with up flow sludge bed reactor, and the start-up and operation characteristics
of the process were studied. The results showed that the CANON process could be started
quickly and stably by the method of reoxygenation reflux under the conditions of sludge
volume fraction 25%, NH<inf>4</inf><sup>+</sup>-N 157 mg·L<sup>-1</sup>, HRT 2 h.
After 50 days of operation, the total nitrogen removal rate increased from 1.31
kg·(m<sup>3</sup>·d)<sup>-1</sup>to 1.47 kg·
(m<sup>3</sup>·d)<sup>-1</sup>; the reoxygenation reflux manner could effectively
control the amount of dissolved oxygen in the reactor, resulting in DO<0.01
mg·L<sup>-1</sup>, which had a good inhibitory effect on the NOB in the system,
and meanwhile provided a good growth environment for AnAOB; By controlling the reflux
flow, the production rate of NO<inf>2</inf><sup>-</sup>could be precisely controlled,
reaching a good balance with NO<inf>2</inf><sup>-</sup>consumption rates, and thus
avoiding the accumulation of NO<inf>2</inf><sup>-</sup>and occurrence of nitration
reactions. Therefore, reoxygenation reflux CANON process showed a great advantage in the
operation stability, which provided a new model for the start-up and stable operation of
CANON process. © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Nitration
Controlled terms:Dissolved oxygen - Effluents - Nitrogen - Nitrogen compounds - Nitrogen
oxides - Nitrogen removal - Wastewater treatment
Uncontrolled terms:Ammonia nitrogen wastewaters - ANAMMOX - Autotrophic nitrogen removal
- Operation characteristic - Operation stability - Reoxygenation - Sludge volume
fractions - Total nitrogen removal
Classification code:452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and
Disposal - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.2
Inorganic Compounds
Numerical data indexing:Age 1.37e-01yr, Mass_Density 1.57e-01kg/m3, Percentage 2.50e+01%,
Time 7.20e+03s
DOI:10.13227/j.hjkx.201609203
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 156>
Accession number:20172603849676
Title:Effects of Acidic Materials on the N Transformations During the Composting of Pig
Manure and Wheat Straw
Authors:Jiang, Ji-Shao (1); Yao, Qian (1)
Author affiliation:(1) Henan Key Laboratory for Environmental Pollution Control, School
of Environment, Henan Normal University, Xinxiang; 453007, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1272-1277
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Understanding the effects of acidic materials on the N transformations becomes
of critical importance to choose the additives with preserving nitrogen during the manure
composting. A 40 d static composting experiment was conducted in the laboratory to
explore the effects of acidic materials on changes of temperature, pH, EC (electrical
conductivity), GI (germination index), N compounds and TOC (total organic carbon) during
the composting of pig manure and wheat straw. Three acidic materials were selected as the
additives, including phosphate fertilizer (P), rotten apples (A) and vinegar (V). The
results showed that the duration with temperature higher than 50℃ in four
treatments all exceeded ten days and reached the health standard of high temperature
composting. The addition of phosphate fertilizer delayed the time of the pile entering
into the high temperature stage, decreased the pH, and increased the EC during the whole
composting. On a mass basis, 53.1%, 36.2%, 46.5% and 41.5% of original amount of N in CK,
P, A and V were lost during the first 16 d, but there was still 20% N loss during 16-24 d
in P and V treatments. The NH<inf>3</inf>-N loss accounted for 26.0%, 11.8%, 21.5% and
20.2% of the N loss. The addition of acidic materials effectively reduced the N loss and
the emissions of NH<inf>3</inf>, and the phosphate fertilizer showed the best effect. In
the end of composting, the GI all exceeded 80%, and met maturity requirements. ©
2017, Science Press. All right reserved.
Number of references:32
Main heading:Fertilizers
Controlled terms:Acetic acid - Carbon - Composting - Fruits - Manures - Organic carbon -
Phosphate fertilizers - Piles - Straw
Uncontrolled terms:Electrical conductivity - Germination index - High temperature -
Manure composting - N transformation - Rotten apples - Total Organic Carbon - Vinegar
Classification code:408.2 Structural Members and Shapes - 804 Chemical Products
Generally - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
Numerical data indexing:Percentage 1.18e+01%, Percentage 2.02e+01%, Percentage 2.15e+01%,
Percentage 2.60e+01%, Percentage 3.62e+01%, Percentage 4.15e+01%, Percentage 4.65e+01%,
Percentage 5.31e+01%, Percentage 8.00e+01%
DOI:10.13227/j.hjkx.201609161
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 157>
Accession number:20172703864545
Title:Effects of Side-stream Phosphorus Recovery on the Performance of EBPR System Under
Low Dissolved Oxygen Condition
Authors:Ma, Juan (1); Song, Lu (1); Yu, Xiao-Jun (1); Sun, Lei-Jun (1); Sun, Hong-Wei (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Lanzhou
Jiaotong University, Lanzhou; 730070, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1130-1136
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A sequencing batch reactor (SBR) was operated with alternating anaerobic/oxic
(An/O) condition to investigate the nitrogen and phosphorus removal performance of EBPR
with DO=1 mg·L<sup>-1</sup>and the phosphorus recovery effect at extracting side
stream ratio of 0, 1/4, 1/3, 1/2 anaerobic phosphorus supernatant. The removal efficiency
of NH<inf>4</inf><sup>+</sup>-N was found to be relatively stable during all experimental
stages but effluent COD of the system during later period remained as high as 81.3
mg·L<sup>-1</sup>. In the absence of side stream, the average phosphorus removal
efficiency was 89.4% and increased to 98.5% and 99.0% when the side stream ratio was 1/4
and 1/3, respectively. However, the phosphorus removal performance began to fluctuate
with side stream ratio of 1/2 and the lowest phosphorus removal rate was 65.4%. During
each experimental stage, only one day effluent TP failed to meet the national wastewater
discharge standard A with side stream ratio of 1/3 in the initial period. Besides, 93.3%
of effluent TP which could meet the national standard with side stream ratio of 1/3 was
far better than 45.5% of that with side stream ratio of 1/2. Nevertheless, the phosphorus
recovery rate improved with the increase of side stream ratio. It was also observed that
the TN removal rate dramatically decreased to 50.9% when the side stream ratio increased
to 1/2. Consequently, a side stream ratio of 1/3 was found to be the optimal condition in
the whole experimental stage, and EBPR system under low dissolved oxygen condition
combined with phosphorus recovery through extracting side stream could greatly improve
the economic and environmental benefits. © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Dissolved oxygen
Controlled terms:Batch reactors - Dissolution - Efficiency - Effluents - Nitrogen removal
- Oxygen - Phosphorus - Recovery - Water aeration
Uncontrolled terms:Anaerobic - Economic and environmental benefits - Low dissolved oxygen
- Nitrogen and phosphorus removal - Phosphate recovery - Removal efficiencies -
Sequencing batch reactors - Side streams
Classification code:445.1 Water Treatment Techniques - 452.3 Industrial Wastes - 802.1
Chemical Plants and Equipment - 802.3 Chemical Operations - 804 Chemical Products
Generally - 913.1 Production Engineering
Numerical data indexing:Mass_Density 8.13e-02kg/m3, Percentage 4.55e+01%, Percentage
5.09e+01%, Percentage 6.54e+01%, Percentage 8.94e+01%, Percentage 9.33e+01%, Percentage
9.85e+01%, Percentage 9.90e+01%
DOI:10.13227/j.hjkx.201609183
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 158>
Accession number:20172703864556
Title:Influence of the Application of Non-Hazardous Sewage Sludge on the Evolution of
Soil Carbon Pool and Carbon Pool Management Index
Authors:Liu, Xiao (1); Huang, Lin (2); Guo, Kang-Li (1); Zhang, Xue-Ling (3); Yang, Jun-
Cheng (1); Jiang, Hui-Min (1); Zhang, Jian-Feng (1)
Author affiliation:(1) National Engineering Laboratory for Improving Quality of Arable
Land, Institute of Agricultural Resources and Regional Planning, Chinese Academy of
Agriculture Science, Beijing; 100081, China; (2) Sewage Purification Co., Ltd. of
Zhengzhou City, Zhengzhou; 450000, China; (3) College of Environment, Sichuan
Agricultural University, Chengdu; 611130, China
Corresponding author:Jiang, Hui-Min(jianghuimin@caas.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1218-1226
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The products of non-hazardous commercial sewage sludge were utilized in the
accordance of the national standard in the experiment with sandy fluvo-aquic soil under
wheat-maize rotation system during 2013 to 2015. The experiment focused on the effects of
the use of non-hazardous sewage sludge on soil carbon pool and carbon pool management
index to provide theoretical and technical basis for the resource utilization of non-
hazardous sewage sludge. The results showed that compared with CK, soil amended sludge
significantly improved soil total organic carbon (TOC), soil microbial biomass carbon
(SMBC), labile organic carbon (LOC), and dissolved organic carbon (DOC) to 8.40-14.74
g·kg<sup>-1</sup>, 164.45-257.45 mg·kg<sup>-1</sup>, 3.58-4.88
g·kg<sup>-1</sup>and 81.16-101.58 mg·kg<sup>-1</sup>, soil amended sludge
significantly enhanced SMBC, LOC and DOC by 84.00%-188.07%, 26.26%-58.03%, and 109.58%-
185.39% (P<0.05) respectively, and 45 t·hm<sup>-2</sup>sewage sludge (W3) had
the most significant impact on soil carbon pool. The soil microbial entropy (SMBC/TOC),
and utilization of labile organic carbon (LOC/TOC) increased by 8.02%-2.77% and 13.75%-
46.48% respectively, and the utilization of dissolved organic carbon (DOC/TOC)
significantly decreased by 153.45%-195.40% (P<0.05). SMBC/TOC, LOC/TOC, and DOC/TOC
declined in treatments of soil amended sludge due to increased application of sewage
sludge, which indicated that soil amended with 45 t·hm<sup>-2</sup>of the sewage
sludge improved the content of stable carbon resulting in the decease of the ratio. L and
LI decreased with the increasing amount of sewage sludge indicating that soil amended
with 45 t·hm<sup>-2</sup>of the sewage sludge improved the content of stable
carbon and was conducive to the accumulation of organic carbon. Soil amended with sludge
significantly increased carbon pool management index (CMPI) by 153.45%-195.40%
(P<0.05), and W3 had the most significant effect on CMPI. Compared with TOC, CMPI
could be more sensitive and direct to reflect the dynamic changes of soil nutrients and
carbon pools through the correlation analysis and redundancy analysis. In summary, the
application of 15-45 t·hm<sup>-2</sup>sewage sludge could significantly enhance
the soil carbon pool and carbon pool management index, especially 45 t·hm<sup>-
2</sup>sewage sludge (W3). © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Organic carbon
Controlled terms:Carbon - Hazards - Lakes - Sewage sludge - Soils - Stream flow
Uncontrolled terms:Carbon pool - Dissolved organic carbon - Fluvo-aquic soils - Resource
utilizations - Soil carbon pool - Soil microbial biomass carbons - Total Organic Carbon -
Utilization ratio of carbon
Classification code:407.2 Waterways - 452.2 Sewage Treatment - 483.1 Soils and Soil
Mechanics - 804 Chemical Products Generally - 804.1 Organic Compounds - 914.1
Accidents and Accident Prevention
Numerical data indexing:Percentage 1.38e+01% to 4.65e+01%, Percentage 8.02e+00% to 2.77e
+00%, Percentage 8.40e+01% to 1.88e+02%
DOI:10.13227/j.hjkx.201607139
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 159>
Accession number:20172703864512
Title:Reactivity-based Anthropogenic VOCs Emission Inventory in China
Authors:Liang, Xiao-Ming (1); Zhang, Jia-Ni (1); Chen, Xiao-Fang (1); Shi, Tian-Li (1);
Sun, Xi-Bo (1); Fan, Li-Ya (1, 2, 3); Ye, Dai-Qi (1, 2, 3)
Author affiliation:(1) School of Environment and Energy, South China University of
Technology, Guangzhou; 510006, China; (2) Guangdong Provincial Key Laboratory of
Atmospheric Environment and Pollution Control (SCUT), Guangzhou; 510006, China; (3) Air
Pollution Control of Guangdong University Engineering Technology Research Center (SCUT),
Guangzhou; 510006, China
Corresponding author:Ye, Dai-Qi(cedqye@scut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:845-854
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A reactivity-based anthropogenic volatile organic compounds (VOCs) emission
inventory in China in 2010 was developed on the basis of ozone formation potential (OFP),
using the latest VOCs emission inventory, source profiles and maximum incremental
reactivity (MIR) values. The results showed that the total anthropogenic OFP was 84187.61
kt in China in 2010, of which 6 882.53 kt was from alkanes, 41496.92 kt from
alkenes/alkynes, 32945.32 kt from aromatic hydrocarbons, 161.45 kt from halocarbons, and
2701.40 kt from oxygenated organics. The top 10 species in terms of OFP consisted of
propene, ethene, m/p-xylene, toluene, 1-butene, o-xylene, 1,2,4-trimethyl benzene, 1,3-
butadiene, m-ethyl toluene and ethyl benzene, contributing 63.95% to the total OFP but
only 31.84% to the mass-based emission. Industrial sources accounted for the largest
(49.29%) of the total OFP, followed by transportation sources (28.31%) and agricultural
sources (22.40%). The key industrial sources with high reactivity were architectural
decoration industry, oil refinery industry, storage and transport, machinery equipment
industry, transport equipment industry and printing. Passenger cars, motorcycles and
heavy duty vehicles were the major OFP sources of transportation. The two biomass burning
sources were both the key OFP sources of agriculture. Shandong, Jiangsu, Guangdong,
Zhejiang and Henan were the top five provinces with contributions of 39.65% of the total
OFP in China. The reactivity-based emission inventory in this study would be of great
significance for the formulation of reactivity-based ozone (O<inf>3</inf>) control
strategies in China. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Ozone
Controlled terms:Agriculture - Architectural design - Architecture - Aromatic
hydrocarbons - Benzene - Butenes - Ethylene - Machinery - Organic compounds - Toluene -
Volatile organic compounds - Xylene
Uncontrolled terms:Agricultural sources - Anthropogenic sources - China - Emission
inventories - Heavy duty vehicles - Machinery equipments - Maximum incremental
reactivities - Ozone formation potentials
Classification code:402 Buildings and Towers - 804 Chemical Products Generally - 804.1
Organic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
Numerical data indexing:Percentage 2.24e+01%, Percentage 2.83e+01%, Percentage 3.96e+01%,
Percentage 4.93e+01%
DOI:10.13227/j.hjkx.201609162
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 160>
Accession number:20171003416430
Title:Bioaccumulation of halogenated flame retardants in fish of dongjiang river
Authors:He, Ming-Jing (1, 2); Yang, Ting (1); Li, Qi (1); Wang, Deng-Xiang (1); Zhao,
Jia-Yuan (1)
Author affiliation:(1) College of Resources and Environment Science, Southwest
University, Chongqing; 400716, China; (2) Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400716, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:382-388
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Bioaccumulation factor (BAF)plays a key role in identification of
bioaccumulative substance and in assessment of chemical risks. In order to reveal the
bioaccumulation behavior of fish in Dongjiang River, sediment, water and fish samples
were collected from Dongjiang River and PBDEs, DBDPE, DP, TBBPA and HBCDs were measured.
The ranges of lgBAF were 5.0-7.4, 6.1-7.1, 4.6-7.9, 2.6-4.6 and 4.8-7.7, respectively. In
the present study, most HFRs had a lgBAF of higher than 3.7, which suggested that they
might be bioaccumulative. The BAF values of HFRs increased with increasing
lgK<inf>ow</inf>, when lgK<inf>ow</inf>>7, the bioaccumulation extent decreased with
the increase of lgK<inf>ow</inf>. Biotransformation of γ-HBCD toward α-HBCD
and the metabolism of BDE66 and BDE99 of these isomers might attribute to the deviation
from the general trend predicted by K<inf>ow</inf>. More attention should be paid to
DBDPE, since its BAF value was higher than that of BDE209. The BSAF values of most PBDEs,
DBDPE, DP, TBBPA and HBCDs congeners in three fish species were less than 1, indicating
that these compounds were unlikely to become a source of pollution to the aquatic
organisms due to the poor bioavailability. © 2017, Science Press. All right
reserved.
Number of references:35
Main heading:Flame retardants
Controlled terms:Aquatic organisms - Barium compounds - Bioaccumulation - Biochemistry -
Fish - Halogenation - Isomers - Metabolism - Organic pollutants - Risk assessment -
River pollution - Rivers
Uncontrolled terms:Bioaccumulation factor - Biota-sediment accumulation factors -
Chemical risks - Dongjiang rivers - Fish samples - Fish species - General trends -
Halogenated flame retardant
Classification code:453 Water Pollution - 461.9 Biology - 471 Marine Science and
Oceanography - 801.2 Biochemistry - 802.2 Chemical Reactions - 803 Chemical Agents and
Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds
- 914.1 Accidents and Accident Prevention
DOI:10.13227/j.hjkx.201607155
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 161>
Accession number:20171003416409
Title:Cathode electric field enhanced removal of nitrobenzene from aqueous solution based
on activated carbon fibers (ACF)-Ozone technique
Authors:Zhao, Chun (1, 2, 4); Zhang, Shuai (1); Zhou, Yu (3); Li, Kun (1); Zhou, Wei (1);
Li, Peng-Yu (1); Yang, Guang (4); Sun, Zhi-Hua (4); Zheng, Huai-Li (1, 2)
Author affiliation:(1) Key Laboratory of the Three Gorges Reservoir Region's Eco-
Environment, Ministry of Education, Chongqing University, Chongqing; 400045, China; (2)
National Centre for International Research of Low-carbon and Green Buildings, Chongqing
University, Chongqing; 400045, China; (3) West Branch, China Academy of Urban Planning
& Design, Chongqing; 400021, China; (4) College of Water Conservancy and
Architectural Engineering, Shihezi University, Shihezi; 832003, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:212-219
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Through the environmental factors impact experiments, such as current intensity,
initial pH value of the reaction solution, and the type and concentration of the
electrolyte, effect and mechanism of electrochemically enhanced removal of nitrobenzene
from aqueous solution on activated carbon fibers (ACF)-ozone technique were studied. The
result showed that compared with the ACF-O<inf>3</inf>system, the removal efficiency of
NB in electrochemically enhanced ACF-O<inf>3</inf>system was significantly improved. The
effect of current intensity on the NB removal efficiency in the electrochemically
enhanced ACF-O<inf>3</inf>system was not significant. O<inf>3</inf>concentration had some
effect on the NB removal efficiency. The pH value of the initial reaction solution had a
great influence on the catalytic activity of ACF in ACF-O<inf>3</inf>system. The presence
of inorganic salts such as sodium sulfate, sodium nitrate and sodium chloride inhibited
the catalytic ability of ACF in O<inf>3</inf>system. In addition, ACF was destroyed by
ozone and the promoting effect of ACF was reduced. When the cathode electric field was
applied on the surface of ACF, the removal effect of the organic compounds by ACF-
O<inf>3</inf>was improved significantly and the structure of ACF was not destroyed by
ozone. © 2017, Science Press. All right reserved.
Number of references:31
Main heading:Ozone
Controlled terms:Activated carbon - Carbon fibers - Catalyst activity - Cathodes -
Efficiency - Electric fields - Electrochemistry - Electrodes - Electrolytes -
Nitrobenzene - pH - Sodium sulfate - Solutions
Uncontrolled terms:Advanced oxidation - Catalytic ability - Current intensity -
Environmental factors - Impact experiment - Initial pH value - Reaction solutions -
Removal efficiencies
Classification code:701.1 Electricity: Basic Concepts and Phenomena - 801.1 Chemistry,
General - 801.4.1 Electrochemistry - 804 Chemical Products Generally - 913.1
Production Engineering
DOI:10.13227/j.hjkx.201607054
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 162>
Accession number:20171003409534
Title:Possible sources of PCDD/Fs in atmosphere of a certain district in Guangdong
Authors:Fu, Jian-Ping (1); Han, Jing-Lei (1); Yu, Xiao-Wei (1); Yang, Yan-Yan (1); Yin,
Wen-Hua (1); Feng, Gui-Xian (1); Zhang, Su-Kun (1); Huang, Jin-Qiong (1); Ren, Ming-Zhong
(1)
Author affiliation:(1) South China Institute of Environmental Sciences, Ministry of
Environmental Protection, Guangzhou; 510655, China
Corresponding author:Han, Jing-Lei(hanjinglei@scies.org)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:502-509
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This paper analyzed 17 polychlorinated dibenzo-p-dioxins and dibenzofurans
(PCDD/Fs) by HRGC/HRMS in the flue gas of a certain municipal solid waste incinerator
(MSWI) and its surrounding air and other possible sources in Guangdong. It discussed the
feature of homologs and main toxic monomers in all samples. It also investigated the
relationship among surrounding area, MSWI and possible sources using principle component
analysis (PCA) and cluster analysis. The results showed that the concentration of PCDD/Fs
was higher in the flue gas than the ambient air, moreover non-effect suffered by
prevailing wind direction. The possible sources might be tyre factory and open burning
based on spot survey. The concentration of PCDD/Fs was lower in tyre factory than upwind
station, but higher at open burning spot than outdrop monitoring station. The analysis of
homologs showed that OCDD, 1, 2, 3, 4, 6, 7, 8-HpCDD and 1, 2, 3, 4, 6, 7, 8-HpCDF were
the main materials in the flue gas and air, meanwhile OCDF was also found in atmosphere.
There was similar feature of 17 PCDD/Fs between surrounding monitoring station and tyre
factory, and the same between flue gas and open burning. The further analysis showed that
the linearly dependent coefficients of 1, 2, 3, 7, 8-PeCDD and 2, 3, 4, 6, 7, 8-HxCDF
were 0.95 and 0.75, respectively. It showed the strong correlation of two monomers in all
ambient air samples. The PCA and cluster analysis showed that MSWI influenced the
surrounding air, tyre factory had an impact on upwind station, and open burning had a
lower effect on outdrop monitoring station. © 2017, Science Press. All right
reserved.
Number of references:28
Main heading:Waste incineration
Controlled terms:Cluster analysis - Flue gases - Flues - Gases - Incineration - Monomers
- Municipal solid waste - Organic pollutants - Principal component analysis - Solid
wastes - Tires
Uncontrolled terms:Ambient air - Monitoring stations - Municipal solid waste incinerator
- Open burning - Polychlorinated dibenzo-p-dioxins and dibenzofurans - Prevailing wind
directions - Principle component analysis - Strong correlation
Classification code:451.1 Air Pollution Sources - 452 Municipal and Industrial Wastes;
Waste Treatment and Disposal - 452.4 Industrial Wastes Treatment and Disposal - 723
Computer Software, Data Handling and Applications - 804 Chemical Products Generally -
804.1 Organic Compounds - 818.5 Rubber Products - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201606178
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 163>
Accession number:20171003416393
Title:Sedimentary characteristics and sources of organic matter in sediments of Dianchi
Lake
Authors:Han, Xiu-Xiu (1, 2, 3); Huang, Xiao-Hu (3); Yu, Li-Yan (3); Yang, Hao (3); Huang,
Chang-Chun (1, 2, 3); Huang, Tao (1, 2, 3); Yu, Yan-Hong (4); Luo, Yu (4)
Author affiliation:(1) Jiangsu Center for Collaborative Innovation in Geographical
Information Resource Development and Application, Nanjing; 210023, China; (2) Jiangsu
Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing; 210023,
China; (3) College of Geography Science, Nanjing Normal University, Nanjing; 210023,
China; (4) Yunnan Institute of Environmental Science, Kunming China International
Research Center for Plateau Lake, Kunming; 650000, China
Corresponding author:Huang, Chang-Chun(huangchangchun@njnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:78-86
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Sediment columns in the southeast and east of Dianchi Lake were taken as the
object of the study to determine ages by<sup>210</sup>Pb dating method. The contents and
sediment fluxes of total organic carbon (TOC) and n-alkanes of the sediments were
investigated, and organic sources were tracked according to the relevant indexes of n-
alkanes. The results indicated that TOC contents and sediment fluxes of two sampling
sediments both presented an increasing trend on the whole; Sediment fluxes of n-alkanes
varied as three stages: increasing period, decreasing period and re-increasing period.
When the sediment fluxes of n-alkanes and TOC both went up, it showed that they had the
same sources: sediments in the lake and carried by the rivers; From 1980s to the end of
20<sup>th</sup>century, sediment fluxes of n-alkanes were going down while those of TOC
were going up. This result means there was a big difference in the sources of n-alkanes
and TOC. The bacteria and algae in the lake made a great contribution to n-alkanes while
TOC was mainly influenced by sediments in the lake and carried by the rivers. n-alkanes
of the two sampling sites both ranged from C<inf>12</inf>to C<inf>35</inf>. Based on the
basic features and relevant indexes of n-alkanes, we proposed that emergent plants made
big contributions to the sources of organic matter in the sediments of Dianchi Lake,
simultaneously, bacteria and algae had significant contributions to the sources of
organic matter in shallow depth of Dianchi Lake. © 2017, Science Press. All right
reserved.
Number of references:42
Main heading:Paraffins
Controlled terms:Algae - Bacteria - Biogeochemistry - Biological materials - Carbon -
Lakes - Organic carbon - Organic compounds - Sediments
Uncontrolled terms:Emergent plants - n-Alkanes - Organic sources - Sediment column -
Sediment flux - Sedimentary characteristics - Source apportion - Total Organic Carbon
Classification code:461.2 Biological Materials and Tissue Engineering - 481.2
Geochemistry - 483 Soil Mechanics and Foundations - 804 Chemical Products Generally -
804.1 Organic Compounds
DOI:10.13227/j.hjkx.201606051
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 164>
Accession number:20171003416418
Title:Identification of efficient strain applied to mining rehabilitation and its rock
corrosion mechanism: based on boosted regression tree analysis
Authors:Wu, Yan-Wen (1); Zhang, Jin-Chi (1); Guo, Xiao-Ping (1); Liu, Xin (1)
Author affiliation:(1) Jiangsu Province Key Laboratory of Soil and Water Conservation and
Ecological Restoration, Co-Innovation Center for Sustainable Forestry in Southern China,
Nanjing Forestry University, Nanjing; 210037, China
Corresponding author:Zhang, Jin-Chi(zhangjc8811@sohu.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:283-293
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The soil and water loss problem in rock mining areas is an extremely serious
problem, and microbes play significant roles in ecological restoration of those areas. In
this study, directive screening was used to explore the efficiency of microbe-mediated
habitat restoration and the underlying mechanisms. A bacterial strain NLX-4, which was
then identified as Pseudomonas protegens according to its 16S rRNA gene sequence, was
screened out as an efficient silicate dissolution bacterium with the ability to secrete
siderophore and indole-3-acetic acid (IAA). Moreover, pH value, element (K, Al, Si)
release, organic acid content, amino acid concentration, polysaccharide content, and rock
particle diameter variation in culture medium were analyzed to explore the ability of P.
protegens NLX-4 to promote dolomite dissolution under controlled experimental conditions.
These results showed that P. protegens NLX-4 could play a positive role in dolomite
dissolution by producing tartaric acid (>777 mg·L<sup>-1</sup>) and
polysaccharides (>8.21g·L<sup>-1</sup>). Therefore, P. protegens NLX-4 is an
efficient microbial resource that can be used in rehabilitation of abandoned mines and
has great application potential. © 2017, Science Press. All right reserved.
Number of references:51
Main heading:Weathering
Controlled terms:Abandoned mines - Bacteria - Dissolution - Ecology - Microorganisms -
Organic acids - pH - Restoration - RNA - Rocks - Silicate minerals - Silicates
Uncontrolled terms:Biological weathering - Ecological restoration - Pseudomonas sp - Rock
mining - Silicate rocks
Classification code:454.3 Ecology and Ecosystems - 461.2 Biological Materials and
Tissue Engineering - 461.9 Biology - 482.2 Minerals - 502.1 Mine and Quarry Operations
- 801.1 Chemistry, General - 802.3 Chemical Operations - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201607075
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 165>
Accession number:20171003409542
Title:Preparation and phosphorus removal mechanism of highly efficient phosphorus
adsorbent Mg/Al-LDO
Authors:Wang, Wei-Dong (1); Hao, Rui-Xia (1); Zhang, Xiao-Xian (1); Wan, Jing-Jing (1);
Zhong, Li-Yan (1)
Author affiliation:(1) Key Laboratory of Beijing for Water Quality Science and Water
Environment Recovery Engineering, College of Architectural Engineering, Beijing
University of Technology, Beijing; 100124, China
Corresponding author:Hao, Rui-Xia(haoruixia@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:572-579
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Aiming at the problem of phosphorus removal in water, Mg/Al-layered double
hydroxides (Mg/Al-LDHs) were synthesized via optimized constant pH co-precipitation
method, and highly efficient phosphorus adsorbent Mg/Al-layered double oxide(Mg/Al-LDO)
was obtained when it was calcined at high temperature. Based on the adsorption
characteristics of phosphorus removal, the study combined Zeta potential, X-ray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) to analyze the
changes of isoelectric point, crystal structure and functional group before and after
adsorption. In addition, Mg/Al-LDO of phosphorus adsorption mechanism was discussed. The
results indicated that using the optimized co-precipitation method in the conditions of
Mg/Al=2∶1, calcination temperature 450℃, and calcination time 2 h, the
Mg/Al-LDO adsorption capacity of phosphate was the best, and the maximum adsorption
capacity could reach 176.94 mg·g<sup>-1</sup>, which was basically consistent with
the theoretical adsorption capacity of 191.57 mg·g<sup>-1</sup>, far higher than
those of Mg/Al-LDHs and other phosphorus adsorbents. The results showed that the
experimental data has the best fitting result with pseudo-second-order kinetics model.
The adsorption process was consistent with Langmuir adsorption isotherm model. The
results of Zeta potential, XRD and FTIR showed that phosphorus adsorption of Mg/Al-LDO
was accomplished co-operatively by electrostatic attraction, anion in layer, ions
exchange, and surface co-ordination. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Phosphorus
Controlled terms:Adsorbents - Adsorption - Calcination - Coprecipitation - Crystal
structure - Fourier transform infrared spectroscopy - Precipitation (chemical) - X ray
diffraction - Zeta potential
Uncontrolled terms:Adsorption characteristic - Adsorption mechanism - Calcination
temperature - Coprecipitation method - Electrostatic attractions - Langmuir adsorption
isotherms - Pseudo second order kinetics - Synthesis conditions
Classification code:801 Chemistry - 801.3 Colloid Chemistry - 802.3 Chemical
Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products
Generally - 933.1.1 Crystal Lattice
Numerical data indexing:Time 7.20e+03s
DOI:10.13227/j.hjkx.201606187
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 166>
Accession number:20171003409545
Title:Simulated desorption kinetics of lead by the dominant plant roots released low
molecular weight organic acids from the water-level-fluctuating zone in the Three Gorges
Reservoir
Authors:He, Yuan-Jie (1); Liu, Jiang (1); Jiang, Tao (1, 2, 3); Huang, Jing-Jing (1);
Cheng, Qing (1); Chen, Hong (1, 2)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400715, China; (3) Department of Forest Ecology and Management,
Swedish University of Agricultural Sciences, Umeả; SE-90183, Sweden
Corresponding author:Chen, Hong(chenhong@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:600-607
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Vegetations grow vigorously in the water-level-fluctuating zone (WLFZ) of Three
Gorges Reservoir (TGR) during the non-flooded period. Low molecular weight organic acids
(LMWOAs) excreted from the roots of these plants may active the heavy metals in soil. In
order to investigate the desorption kinetics of Pb in the vegetation covered soil of TGR,
the LMWOAs released from Cynodon dactylon and Echinochloa crusgalli roots, which are the
dominant species in WLFZ, were analyzed both qualitatively and quantitatively.
Furthermore, single and mixed species of LMWOAs were also used in the simulation. The
results showed that the variety and content of LMWOAs secreted from Cynodon dactylon
roots were larger and higher than those of Echinochloa crusgalli. Citric acid, malonic
acid, acetic acid and malic acid were the same LMWOAs released from the two types of
plants. The contents of acetic acid were the highest among all LMWOAs, which were 0.765
and 0.261 mmol·kg<sup>-1</sup>in Cynodon dactylon and Echinochloa crusgalli roots,
respectively.Citric acid, malonic acid and acetic acid were the same LMWOAs detected from
their rhizosphere soils. In the citric acid, malonic acid and acetic acid desorption
test, the desorption captivities of Pb were inhibited when the concentration of LMWOAs
was lower than 1 mmol·L<sup>-1</sup>. The desorption ability displayed a
decreasing order of malonic acid>citric acid>acetic acid. However, the three LMWOAs
promoted the desorption of Pb in soil when their concentrations were higher than 1
mmol·L<sup>-1</sup>, respectively. The desorption ability displayed a decreasing
order of citric acid>malonic acid>acetic acid. During the entire process of
desorption, 0-240 min was the fast reaction stage, and the remaining time was the slow
reaction stage. The pseudo-second order kinetics equation could fit best for the kinetic
process. © 2017, Science Press. All right reserved.
Number of references:39
Main heading:Soil pollution
Controlled terms:Acetic acid - Carboxylic acids - Citric acid - Desorption - Enzyme
kinetics - Heavy metals - Kinetics - Lead - Molecular weight - Organic acids - pH -
Reservoirs (water) - Soils - Vegetation - Water levels
Uncontrolled terms:Desorption kinetics - Dominant plants - Echinochloa crusgalli - Heavy
metals in soil - Low molecular weight organic acid - Pseudo second order kinetics -
Simulated desorption - Three gorges reservoir
Classification code:441.2 Reservoirs - 483.1 Soils and Soil Mechanics - 531 Metallurgy
and Metallography - 546.1 Lead and Alloys - 801.1 Chemistry, General - 802.3 Chemical
Operations - 804.1 Organic Compounds - 931 Classical Physics; Quantum Theory;
Relativity - 931.3 Atomic and Molecular Physics
Numerical data indexing:Molar_Concentration 1.00e+00mol/m3, Time 0.00e+00s to 1.44e+04s
DOI:10.13227/j.hjkx.201607167
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 167>
Accession number:20171003409546
Title:Experimental research of Hg<sup>2+</sup>removal by TiO<inf>2</inf>/bentonite
composite
Authors:Tang, Xing-Ping (1); Zhou, Xiong (1); Zhang, Jin-Yang (2); Zhang, Cheng (1, 3);
Wang, Ding-Yong (1, 3)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) College of Chemistry and Chemical Engineering, Neijiang
Normal University, Neijiang; 641112, China; (3) Chongqing Key Laboratory of Agricultural
Resources and Environment, Chongqing; 400716, China
Corresponding author:Wang, Ding-Yong(dywang@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:608-615
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The TiO<inf>2</inf>/bentonite composite was synthesized by modifying calcium-
based bentonite with Nano-TiO<inf>2</inf>. The products before and after modification
were characterized via the approach of X-ray power diffraction(XRD) and scanning electron
microscope(SEM).The effect of TiO<inf>2</inf>/bentonite composite on mercury removal from
aqueous solutions of HgCl<inf>2</inf>was studied at different dosage, pH, adsorption time
and the initial concentration of Hg<sup>2+</sup>was investigated and compared with the
bentonite by indoor simulation experiment, as well as the orthogonal experiments to
determine the optimal condition of Hg<sup>2+</sup>adsorption. The experimental results
showed: after modified by TiO<inf>2</inf>, TiO<inf>2</inf>/bentonite composite particles
were apparently smaller, the basal spacing was increased and with a loose and porous
structure. The adsorption rates of TiO<inf>2</inf>/bentonite composite on
Hg<sup>2+</sup>were increased compared with bentonite. The Hg<sup>2+</sup>adsorption
rates were increased with the increasing dosages, pH and adsorption time. The adsorption
rates were higher than 98.0% when the dosage was 1.5 g·L<sup>-1</sup>, pH 7.0, and
the adsorption time was 120 min. The adsorption rates became smaller with increasing
initial concentration of Hg<sup>2+</sup>. False secondary dynamic equation could describe
the adsorption of TiO<inf>2</inf>/bentonite composite on Hg<sup>2+</sup>, and the
chemical adsorption was dominant. The adsorption isotherm of Hg<sup>2+</sup>conformed to
Langmuir equation, indicating that the adsorption of Hg<sup>2+</sup>was typical monolayer
adsorption. The optimal experimental condition was: dosage of 2.0 g·L<sup>-
1</sup>, pH 8.0, adsorption time of 16 h and the initial Hg<sup>2+</sup>concentration of
45 mg·L<sup>-1</sup>. Under this condition, the adsorption rate was 99.9%, and the
equilibrium concentration of Hg<sup>2+</sup>was 0.034 mg·L<sup>-1</sup>. ©
2017, Science Press. All right reserved.
Number of references:27
Main heading:Adsorption
Controlled terms:Bentonite - Mercury (metal) - Scanning electron microscopy - Solutions -
Titanium dioxide
Uncontrolled terms:Adsorption characteristic - Equilibrium concentration - Experimental
research - Initial concentration - Modification - Optimal conditions - Optimal
experimental conditions - Orthogonal experiment
Classification code:482.2 Minerals - 549.3 Nonferrous Metals and Alloys excluding
Alkali and Alkaline Earth Metals - 802.3 Chemical Operations - 804.2 Inorganic
Compounds
Numerical data indexing:Mass_Density 1.50e+00kg/m3, Mass_Density 2.00e+00kg/m3,
Mass_Density 3.40e-05kg/m3, Mass_Density 4.50e-02kg/m3, Percentage 9.80e+01%, Percentage
9.99e+01%, Time 5.76e+04s, Time 7.20e+03s
DOI:10.13227/j.hjkx.201607164
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 168>
Accession number:20171003409565
Title:Characteristic of abundances and diversity of carbon dioxide fixation microbes in
paddy soils
Authors:Liu, Qiong (1, 2); Wei, Xiao-Meng (1); Wu, Xiao-Hong (1, 3); Yuan, Hong-Zhao (1,
4); Wang, Jiu-Rong (1, 4); Li, Yu-Yuan (1); Ge, Ti-Da (1); Wu, Jin-Shui (1)
Author affiliation:(1) Key Laboratory of Agro-Ecological Processes in Subtropical Region,
Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha; 410125,
China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Faculty
of Life Science and Technology, Central-South University of Forestry and Technology,
Changsha; 410004, China; (4) The Public Service Technology Center, Institute of
Subtropical Agriculture, Chinese Academy of Sciences, Changsha; 410125, China
Corresponding author:Yuan, Hong-Zhao(yuanhongzhao@isa.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:760-768
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To get a better understanding of the microbial autotrophic carbon sequestration
potential of paddy fields and its mechanisms, soil incubation experiment was conducted
for four representative paddy soils. The molecular biological methods [quantitative PCR
(qPCR), clone library and terminal-restriction fragment length polymorphism (T-RFLP)
technique] based on cbbL and cbbM genes encoding the key enzymes [ribulose-1, 5-
bisphosphate carboxylase/oxygenase (RubisCO)] of Calvin cycle were used to determine the
abundance and diversity of autotrophic microbes. The results showed that, after 45 days
of incubation, carbon dioxide fixation autotrophic microbial abundances were generally
increased compared with those before incubation, and cbbL gene abundances were
approximately three magnitudes higher than those of cbbM. Dominant microbial populations
varied among the four paddy soils, and most of these OTUs were distantly related to known
sequences, only part of them could be grouped into Proteobacteria and Actinobacteria. RDA
analysis results showed that soil organic carbon (SOC), cation exchange capacity (CEC),
pH, clay, silk and sand content had significant effects on the CO<inf>2</inf>fixation
microbial community. Consequently, the results of this study provide significant
reference to understand the role of microorganisms in carbon cycle process. The results
are helpful for providing a scientific basis for scientific management of paddy soil
fertility and low carbon agriculture construction. © 2017, Science Press. All right
reserved.
Number of references:28
Main heading:Organic carbon
Controlled terms:Bacteria - Carbon dioxide - Genes - Microorganisms - Plants (botany) -
Polymerase chain reaction - Soils
Uncontrolled terms:Carbon dioxide fixation - CbbL - CbbM - Community structures - Paddy
soils
Classification code:461.2 Biological Materials and Tissue Engineering - 461.9 Biology -
483.1 Soils and Soil Mechanics - 801.2 Biochemistry - 804.1 Organic Compounds - 804.2
Inorganic Compounds
Numerical data indexing:Age 1.23e-01yr
DOI:10.13227/j.hjkx.201607143
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 169>
Accession number:20171003416397
Title:Response characteristics of algal chlorophyll-a to nitrogen, phosphorus and water
temperature in lake erhai based on quantile regression
Authors:Chen, Xiao-Hua (1); Li, Xiao-Ping (2); Qian, Xiao-Yong (1); Hu, Shuang-Qing (1)
Author affiliation:(1) Shanghai Academy of Environmental Science, Shanghai; 200233,
China; (2) State Key Laboratory of Estuarine and Coastal Research, East China Normal
University, Shanghai; 200062, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:113-120
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on water quality monitoring data of Lake Erhai from 1990 to 2013, the
yearly and seasonally response characteristics of algal chlorophyll-a to total nitrogen
(TN), total phosphorus (TP) and water temperature was investigated using quantile
regression method. It indicated that water temperature was always the primary limiting
factor of algal biomass indicated by chlorophyll a (Chl-a) across recent 24 years, but
its limiting effect on algal Chl-a content was kept descending sharply and replaced much
by nutrients (e.g. P, N) with the increasing eutrophic level. Especially the slope values
of TP on Chl-a were kept ascending from -0.3 to 0.8. Since 2002, the positive effect of
TN on Chl-a presented slow descending tendency, and P became the most important limiting
nutrient factor of algal growth. According to the seasonal variation analysis, water
temperature and N had dominant effects on algal Chl-a in spring and autumn, but they were
replaced by P in the case of Chl-a>8 mg·m<sup>-3</sup>in spring. In summer, N
and P had strong interactive impacts on the algal growth, and the positive effect of P
was stronger than that of N in the case of Chl-a>3 mg·m<sup>-3</sup>. In
winter, algal biomass was co-limited by temperature and P. It suggested that P reduction
is the prior choice of eutrophication control of Lake Erhai, and simultaneously reducing
N load is necessary in the background of global warming. In addition,so far a emergency
controlling measure should be taken to monitor algal blooming due to sharp ascending of
water temperature within a few days in spring and autumn. © 2017, Science Press. All
right reserved.
Number of references:32
Main heading:Temperature
Controlled terms:Chlorophyll - Ecology - Eutrophication - Global warming - Lakes -
Nitrogen - Nutrients - Phosphorus - Regression analysis - Water quality
Uncontrolled terms:Chlorophyll a - Eutrophication control - Limiting effects - Quantile
regression - Response characteristic - Seasonal variation - Water quality monitoring -
Water temperatures
Classification code:443.1 Atmospheric Properties - 445.2 Water Analysis - 454.3
Ecology and Ecosystems - 641.1 Thermodynamics - 804 Chemical Products Generally - 804.1
Organic Compounds - 922.2 Mathematical Statistics
Numerical data indexing:Age 2.40e+01yr
DOI:10.13227/j.hjkx.201607041
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 170>
Accession number:20171003409551
Title:Nitrogen removal effect and conversion characteristics of nitrous oxide in single-
stage and multi-stage A/O processes
Authors:Guo, Chang-Zi (1); Zhang, Feng-Yan (1); Liu, Fu-Yu (1); Zhu, Chao (1); Pei, Li-
Ying (1)
Author affiliation:(1) School of Environmental Science and Engineering, Shaanxi
University of Science and Technology, Xi'an; 710021, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:647-653
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The single-stage A/O and multi-stage A/O processes were simulated by sequencing
batch reactors (SBRs) with alternate stirring and aeration. The removal efficiency of
nitrogen and the release mechanism of N<inf>2</inf>O were studied under the identical
conditions of influent quality, hydraulic retention time (HRT), sludge retention time
(SRT), temperature and anoxic/oxic (A/O) retention time ratio. Experimental results
showed that COD or ammonia-nitrogen removal had no significant difference between the
single-stage and the multi-stage A/O processes for the influent quality equivalent to
municipal wastewater. However, TN removal efficiency of the former was better than the
later with 72.1% and 52.2%, respectively. In the conversion of total nitrogen, during the
typical cycle in the single-stage A/O and multi-stage A/O processes, the yields of
N<inf>2</inf>O were 16.95 mg and 3.95 mg, respectively. The conversion rate, which is the
ratio of N<inf>2</inf>O yield and TN removal, was respectively 11.47% and 4.11%.
N<inf>2</inf>O production and emission occurred mainly in aerobic (nitrification) phase
while there was little N<inf>2</inf>O emission in anoxic (denitrification) phase.
Although the dominant species of AOB was both Nitrosomonas in the single-stage A/O and
the multi-stage A/O processes under the same operating conditions, it was more conducive
to the growth of nitrifying bacteria (AOB, NOB) in the single-stage A/O process with the
greater abundance of Nitrosomonas. Meanwhile, the type and abundance of NOB in the
single-stage A/O process were significantly more than in the multi-stage A/O process too.
Therefore, it is more competitive to deal with the high-strengthening ammonia-nitrogen
wastewater in the single-stage A/O process. In the actual operation of wastewater
treatment, using appropriate partitions of A/O or oxygen-supplying modes can not only
result in better nitrogen removal but also decrease the secondary pollution caused by
N<inf>2</inf>O to the atmosphere. © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Nitrogen removal
Controlled terms:Activated sludge process - Ammonia - Bacteria - Batch reactors -
Efficiency - Nitrification - Nitrogen - Nitrogen oxides - Wastewater treatment
Uncontrolled terms:Ammonia nitrogen wastewaters - Conversion characteristics - Hydraulic
retention time - Multi stage - Nitrosomonas - Nitrous oxide - Sequencing batch reactors -
Single stage
Classification code:452.2 Sewage Treatment - 452.4 Industrial Wastes Treatment and
Disposal - 802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions - 804
Chemical Products Generally - 804.2 Inorganic Compounds - 913.1 Production Engineering
Numerical data indexing:Mass 1.69e-05kg, Mass 3.95e-06kg, Percentage 1.15e+01%,
Percentage 4.11e+00%, Percentage 5.22e+01%, Percentage 7.21e+01%
DOI:10.13227/j.hjkx.201603152
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 171>
Accession number:20171003409529
Title:Inventory and environmental impact of VOCs emission from anthropogenic source in
Chang-Zhu-Tan region
Authors:You, Xiang-Yu (1); Luo, Da-Tong (1); Liu, Zhan (1); Su, Yan-Rong (1)
Author affiliation:(1) Hunan Research Academy of Environmental Protection, Changsha;
410004, China
Corresponding author:Su, Yan-Rong(89426781@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:461-468
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on environmental statistical data and emission factor, an anthropogenic
volatile organic compounds (VOCs) emission inventory was established for the Chang-Zhu-
Tan region, and a grid with spatial resolution of 3 km×3 km was built according to
the spatial feature data. Ozone formation potential (OFP) and secondary organic aerosol
(SOA) formation potential of anthropogenic sources were also estimated. The results
showed that the total anthropogenic VOCs emission was about 113.49 kt in Chang-Zhu-Tan
region and the main sources were industrial processes, solvent utilization and vehicles
with the VOCs emission of 35.88 kt, 28.72 kt and 22.13 kt, respectively. Paving pitch and
architecture wall painting accounted for the majority of the solvent utilization and the
building materials industry accounted for 75.34% of VOCs emission from the industrial
processes. Liling was the largest contributor compared to the other cities in Chang-Zhu-
Tan region, where the VOCs emission from these anthropogenic sources in 2014 was 16.58
kt. The total OFP of these sources was 375.33 kt, in which solvent utilization
contributed 27.28% and the O<inf>3</inf>generative capacity of biomass burning was the
largest. Solvent utilization contributed 35.35% to the total SOA formation potentials and
its SOA generative capacity was also the largest. The spatial distribution
characteristics revealed that the VOCs emission mostly originated from urban area. ©
2017, Science Press. All right reserved.
Number of references:27
Main heading:Industrial emissions
Controlled terms:Aerosols - Construction industry - Environmental impact - Organic
compounds - Ozone - Solvents - Volatile organic compounds
Uncontrolled terms:Anthropogenic sources - Building materials industry - Chang-Zhu-Tan
region - Distribution characteristics - Emission inventories - Formation potential -
Ozone formation potentials - Secondary organic aerosols
Classification code:405 Construction Equipment and Methods; Surveying - 451.1 Air
Pollution Sources - 454.2 Environmental Impact and Protection - 803 Chemical Agents and
Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds
Numerical data indexing:Percentage 2.73e+01%, Percentage 7.53e+01%
DOI:10.13227/j.hjkx.201607185
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 172>
Accession number:20172603860785
Title:Performance Improvement of Microbial Fuel Cell with Polyaniline Dopped Graphene
Anode
Authors:Huang, Li-Hua (1, 2); Li, Xiu-Fen (1); Ren, Yue-Ping (1); Wang, Xin-Hua (1)
Author affiliation:(1) Laboratory of Environmental Biotechnology, School of Environmental
and Civil Engineering, Jiangnan University, Wuxi; 214122, China; (2) School of Life
Science, Linyi University, Linyi; 276005, China
Corresponding author:Li, Xiu-Fen(xfli@jiangnan.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1717-1725
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Microbial fuel cell (MFC) technology has potential in recovering bioelectricity
from different types of waste, which attracts more and more attention in the field of
environment and energy. However, low power density, high cost and low substrate
degradation rate, closely associated with anode performance, limit its practical
application. In this study, proportional polyaniline (PANI) together with graphene was
chosen to obtain the PANI dopped graphene composite. The as-received composite was
modified onto the surface of glassy carbon electrode. The results of electrochemical
analysis showed that the optimal mass ratio of graphene was 20% for cyclic voltammetry
(CV) and linear sweep voltammetry (LSV) analysis. The anodes with 5% graphene produced a
peak power density of (831±45) mW·m<sup>-2</sup>, which was 1.2, 1.3, 1.3,
1.5, 1.8 times of those with 20% graphene, 1% graphene, graphene, PANI and carbon cloth,
respectively. Moreover, 5% graphene reactors showed the maximum values in output voltage,
open-circuit voltage (OCV), chemical oxygen demand (COD) removal rate, coulombic
efficiency (CE), and biomass density. The polarization resistance was only (24±2)
Ω in 5% graphene reactors, which was 19.8% of that of carbon cloth. The results of
electrochemical analysis were not consistent with those of bioelectrochemical analysis,
demonstrating that the biocompatibility of electrode was one of the important factors
affecting MFC performance. 5% graphene anode showed full advantages of graphene and PANI,
which improved the performance of MFC. © 2017, Science Press. All right reserved.
Number of references:41
Main heading:Microbial fuel cells
Controlled terms:Anodes - Biocompatibility - Chemical analysis - Chemical oxygen demand -
Cyclic voltammetry - Degradation - Electrochemical electrodes - Electrochemistry -
Electrodes - Electrophysiology - Fuel cells - Glass membrane electrodes - Graphene -
Open circuit voltage - Polyaniline
Uncontrolled terms:Anode modification - Chemical oxygen demand removals - Electrogenesis
- Environment and energies - Glassy carbon electrodes - Linear sweep voltammetry -
Polarization resistances - Polyanilines (PAni)
Classification code:461.1 Biomedical Engineering - 461.9.1 Immunology - 702.2 Fuel
Cells - 704.1 Electric Components - 708.2 Conducting Materials - 714.1 Electron Tubes
- 761 Nanotechnology - 801.4.1 Electrochemistry - 802.2 Chemical Reactions - 804
Chemical Products Generally
Numerical data indexing:Percentage 1.00e+00%, Percentage 1.98e+01%, Percentage 2.00e+01%,
Percentage 5.00e+00%
DOI:10.13227/j.hjkx.201609062
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 173>
Accession number:20172603860982
Title:Modification of Diatomite by Zirconium and Its Performance in Phosphate Removal
from Water
Authors:Fan, Yi (1); Wang, Zhe (1); Zhao, Lian-Qin (1); Wu, De-Yi (1)
Author affiliation:(1) School of Environmental Science & Engineering, Shanghai Jiao
Tong University, Shanghai; 200240, China
Corresponding author:Wu, De-Yi(dywu@sjtu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1490-1496
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Zirconium modified diatomite was obtained by modifying raw diatomite with
zirconium and the mass fraction of zirconia was 12.39% in the obtained material, which
was proved to be amorphous via XRD. SEM images showed that porous floccules covered the
surface of diatomite after modification and the specific surface area of the zirconium
modified diatomite was 75.22 m<sup>2</sup>·g<sup>-1</sup>, larger than that of raw
diatomite (14.00 m<sup>2</sup>·g<sup>-1</sup>). XPS spectra indicated that
zirconia and diatomite were bonded together through chemical linkage, rather than
physical deposition. The adsorption isotherm of phosphate by zirconium modified diatomite
was fitted better to the Langmuir model with a calculated maximum adsorption capacity
reaching 10.56 mg·g<sup>-1</sup>. The adsorption amount of zirconium oxide
component in the material was estimated to be 81.67 mg·g<sup>-
1</sup>ZrO<inf>2</inf>, which was higher than that of pure zirconium oxides reported in
previous studies. The adsorption amount of phosphate by zirconium modified diatomite
decreased with the increase of pH. The adsorption was proved to be a ligand exchange
process, supported by the XPS spectra of Zr3d region before and after adsorption.
Chloride ion, sulfate ion and nitrate ion did not inhibit the adsorption of phosphate on
the material, whereas coexistence of bicarbonate ions competed with phosphate ions to a
certain extent. When treating eutrophic lake water with a phosphate concentration of 2
mg·L<sup>-1</sup>, the phosphate concentration level could meet the Ⅲ rank
of Surface Water Environment Quality Standard of China by adopting the dosage of
zirconium modified diatomite ≥ 1.25 g·L<sup>-1</sup>. © 2017, Science
Press. All right reserved.
Number of references:32
Main heading:Adsorption
Controlled terms:Ions - Oxides - Phosphates - Water treatment - X ray photoelectron
spectroscopy - Zirconia - Zirconium
Uncontrolled terms:Adsorption amounts - Adsorption capacities - Chemical linkage -
Diatomite - Ligand exchanges - Phosphate concentration - Phosphate removal - Water
environments
Classification code:445.1 Water Treatment Techniques - 549.3 Nonferrous Metals and
Alloys excluding Alkali and Alkaline Earth Metals - 802.3 Chemical Operations - 804
Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 1.25e+00kg/m3, Mass_Density 2.00e-03kg/m3,
Percentage 1.24e+01%, Specific_Surface_Area 1.40e+04m2/kg, Specific_Surface_Area 7.52e
+04m2/kg
DOI:10.13227/j.hjkx.201609132
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 174>
Accession number:20172603860965
Title:Emission Characteristics of Vehicle Exhaust in Artery and Collector Roads in
Nanjing Based on Real-time Traffic Data
Authors:Li, Xiao-Yu (1); Wu, Lin (1); Zou, Chao (1); Zhang, Yi (1); Mao, Hong-Jun (1);
Jing, Bo-Yu (2)
Author affiliation:(1) College of Environmental Science and Engineering, Nankai
University, Tianjin; 300071, China; (2) State Environmental Protection Key Laboratory of
Odor Pollution Control, Tianjin; 300191, China
Corresponding author:Mao, Hong-Jun(hongjunm@nankai.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1340-1347
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The vehicle emissions were estimated by the Urban High Temporal-Spatial
Resolution Vehicle Emission Inventory Model and Decision Support System (hereinafter
referred to as the HTSVE system) with the real-time data including traffic flow, average
speed and fleet compositions obtained from Radio Frequency Identification (RFID) and
emission factors based on COPERT. The study focused on the characteristics of vehicle
emissions by means of non-parametric test and cluster analysis with ArcGIS in artery
roads and collector roads in Nanjing, 2014. The result showed that the proportion of
passenger cars reached up to 80%, and China 3 and China 4 accounted for over 90% while
China 3 contributed most. The daily average emissions in special periods including
morning, noon and evening were affected by both road types and weekend effect. The artery
and collector roads were classified as 5 clusters. Each type had similar emission rates
distribution and was affected by spatial position to support traffic management. ©
2017, Science Press. All right reserved.
Number of references:24
Main heading:Advanced traffic management systems
Controlled terms:Artificial intelligence - Cluster analysis - Decision support systems -
Fleet operations - Radio frequency identification (RFID) - Traffic control -
Transportation - Vehicles
Uncontrolled terms:Artery and collector roads - Emission characteristics - Fleet
composition - HTSVE system - Non-parametric test - Real-time traffic datum - Spatial
resolution - Traffic management
Classification code:406.1 Highway Systems - 716.3 Radio Systems and Equipment - 723
Computer Software, Data Handling and Applications - 723.4 Artificial Intelligence
Numerical data indexing:Percentage 8.00e+01%, Percentage 9.00e+01%
DOI:10.13227/j.hjkx.201608065
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 175>
Accession number:20172703864527
Title:Release Characteristics of Mercury from Submersed Typical Herbaceous Plants in the
Water-Level Fluctuation Zone of the Three Gorges Reservoir Area
Authors:Deng, Han (1); Zhang, Xiang (1); Zhang, Cheng (1, 2, 3); Wang, Yong-Min (1);
Wang, Ding-Yong (1, 2, 3)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Engineering Research Center for Agricultural
Non-point Source Pollution Control in the Three Gorges Reservoir Area, Chongqing; 400716,
China; (3) Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing;
400716, China
Corresponding author:Wang, Ding-Yong(dywang@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:987-992
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In suit inundation experiments of three typical herbaceous plants were conducted
in field to investigate the mercury release characteristics of plants grown in the
water-level fluctuation zone of the Three Gorges Reservoir after flooding by regulating
the water level. To realize this objective, this study mainly focused on the dynamic
change of total mercury (THg) concentrations in plants after inundation, the release rate
and flux of THg from plants and its release load in this region. The results showed that
the release process of THg in plants fitted exponential curve, suggesting that mercury
release rate was quick in the initial inundation period and then flat afterwards as the
decomposing plants. The THg release amounts (followed the order of Alternanthera
philoxeroides>Polygonum lapathifolium>Cynodon dactylon) were probably influenced by
initial C/N ratio and THg concentrations of plants. The decrement of THg concentrations
in per unit mass of plants residue was found to be generally proportional to their
initial C/N ratio, while the THg release amounts were generally proportional to the
initial THg concentrations of plants. The total release loads of three plants
(Alternanthera philoxeroides, Polygonum lapathifolium, Cynodon dactylon) were estimated
to be 167.31, 78.13 and 88.33 mg·hm<sup>-2</sup>, respectively, according to their
weight distribution and biomass in the water-level fluctuation zone of the Three Gorges
Reservoir Area. © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Plants (botany)
Controlled terms:Floods - Mercury (metal) - Reservoirs (water) - Water levels
Uncontrolled terms:Alternanthera philoxeroides - Herbaceous plants - Inundation - Release
characteristics - Three gorges reservoir - Three gorges reservoir area - Water-level-
fluctuation zones - Weight distributions
Classification code:441.2 Reservoirs - 549.3 Nonferrous Metals and Alloys excluding
Alkali and Alkaline Earth Metals
DOI:10.13227/j.hjkx.201608187
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 176>
Accession number:20172703864517
Title:Analysis of Chemical Composition and Pollution Source of the Fine Particulate
Matter by the SPAMS in the Four Seasons in Nanning
Authors:Liu, Hui-Lin (1); Chen, Zhi-Ming (1); Mao, Jing-Ying (1); Liang, Gui-Yun (1);
Huang, Jiong-Li (1); Li, Hong-Jiao (1); Yang, Jun-Chao (1); Mo, Zhao-Yu (1, 2)
Author affiliation:(1) Scientific Research Academy of Guangxi Environmental Protection,
Nanning; 530022, China; (2) Deparment of Environmental Science and Engineering, Fudan
University, Shanghai; 200433, China
Corresponding author:Mo, Zhao-Yu(65678503@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:894-902
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To study the chemical composition and pollution sources of the fine particulate
matter during the four seasons in Nanning, single particle aerosol mass spectrometry was
performed to characterize the fine particulate matter in Nanning during the four seasons.
The correlation (R<sup>2</sup>) between the fine particulate matter number concentration
and the mass concentration of the fine particulate matter obtained using SPAMS was all
above 0.75 in the observation period. The particle number concentration could reflect the
atmospheric pollution situation to some degree. The average mass spectrogram of the fine
particulate matter reflected that secondary pollutants were more in winter and spring in
Nanning. The Art-2a classification method was used to classify the chemical composition
of the fine particulate matter. The results showed that the number concentration of the
chemical composition and sources of pollution had differences in the four seasons.
Chemical composition could reflect pollution sources. The elevated elemental carbon was
positively with increasing coal combustion in winter. The elevated organic carbon was
positively correlated with motor vehicle source in autumn. Rich potassium particles,
levoglucosan and substance were positively correlated with biomass burning source and
dust in summer. The rich sodium particles and heavy metals were higher in spring. During
the process of increasing pollution, the contributions of biomass and coal combustion
sources were large. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Air pollution
Controlled terms:Aerosols - Chemical analysis - Coal combustion - Heavy metals - Mass
spectrometry - Organic carbon - Particles (particulate matter) - Pollution
Uncontrolled terms:Aerosol mass spectrometers - Chemical component - Fine particulate
matter - Pollution sources - The four seasons
Classification code:451 Air Pollution - 521 Fuel Combustion and Flame Research - 524
Solid Fuels - 531 Metallurgy and Metallography - 801 Chemistry - 804.1 Organic
Compounds - 951 Materials Science
DOI:10.13227/j.hjkx.201602009
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 177>
Accession number:20172703864532
Title:Efficiency and Mechanism of Purifying High Iron-Manganese from Ground Water in the
Cold Villages and Towns Based on The Coupling of Rice Husk and Iron-Manganese Oxidizing
Bacteria
Authors:Sun, Nan (1); Chen, Yan-Li (1); Zhang, Ying (2); Lu, Yan (2); Song, Qiu-Xia (2);
Li, Chun-Yan (2); Jiang, Zhao (2)
Author affiliation:(1) College of Water Conservancy & Civil Engineering, Northeast
Agricultural University, Harbin; 150030, China; (2) College of Resources and Environment,
Northeast Agricultural University, Harbin; 150030, China
Corresponding author:Zhang, Ying(zhangyinghr@hotmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1028-1037
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Aiming at the special geo-climatic conditions and typical problems constraining
the development of villages and towns, making villages and towns have the following
characteristics: green and low-carbon, energy saving and environmental friendly, the
coupling process of adsorption by carbonized rice husk particles and biological oxidation
using Bacillus megaterium bacteria was developed for purifying high iron-manganese from
groundwater in the cold villages and towns. The quick start-up method of biological
filter at low temperature was studied. Based on the contact oxidation and biological
method, iron removal efficiency and reaction rate in different filtration layers under
different filtration conditions were comparatively analyzed, and iron removal mechanism
of biological filter was determined. Filter materials and the solid samples in backwash
water at different stages were characterized and the manganese removal mechanism of
biological filter was analyzed through SEM, FTIR, XPS, Raman spectra and EPR. The results
showed that the active biological membrane reached mature and stable only after 15 d with
the operation mode of bacteria liquid cycle and low filtration rate in the filter column.
The effluent concentration met the requirements of drinking water quality (GB 5749-2006)
in the stable operation process. Fe, Mn and bacteria were lower than 0.3
mg·L<sup>-1</sup>, 0.1 mg·L<sup>-1</sup>, 100 CFU·mL<sup>-1</sup>,
respectively. Iron removal mechanism relied mainly on the physical and chemical effects,
supplemented by biological function. During the biofilm culturing stage and initial
stable operation stage of filter column, manganese removal relied mainly on the
biological effect. The physical chemistry was preferred at later stable operation stage.
The study provides technical support for the applications of treating collectively
Fe<sup>2+</sup>and Mn<sup>2+</sup>in groundwater. © 2017, Science Press. All right
reserved.
Number of references:21
Main heading:Chemicals removal (water treatment)
Controlled terms:Bacteria - Bacteriology - Biological materials - Biological membranes -
Carbon - Cytology - Effluents - Electron spin resonance spectroscopy - Filters (for
fluids) - Filtration - Fourier transform infrared spectroscopy - Groundwater - Iron -
Manganese - Mechanisms - Microfiltration - Passive filters - Physical chemistry - Potable
water - Rural areas - Temperature - Water - Water quality
Uncontrolled terms:Bacillus megaterium - Biological oxidations - Carbonized rice husks -
Effluent concentrations - Environmental-friendly - Low temperatures - Manganese oxidizing
bacteria - Rice husk
Classification code:444 Water Resources - 444.2 Groundwater - 445.2 Water Analysis -
452.3 Industrial Wastes - 461.2 Biological Materials and Tissue Engineering - 543.2
Manganese and Alloys - 545.1 Iron - 601.3 Mechanisms - 641.1 Thermodynamics - 703.2
Electric Filters - 801 Chemistry - 801.4 Physical Chemistry - 802.3 Chemical
Operations - 804 Chemical Products Generally
Numerical data indexing:Mass_Density 1.00e-04kg/m3, Mass_Density 3.00e-04kg/m3
DOI:10.13227/j.hjkx.201608154
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 178>
Accession number:20172703864561
Title:Characterization of Phosphorus Forms in Organic Composts and Their Effects on Leaf
Phosphorus Content of Castanea mollissima in Chinese Chestnut Producing Area
Authors:Song, Ying (1); Guo, Su-Juan (1); Zhang, Li (1); Sun, Hui-Jun (1); Xie, Ming-Ming
(1); Wu, Yan-Qi (1); Wang, Jing (1)
Author affiliation:(1) Key Laboratory for Silviculture and Conservation, College of
Forestry, Beijing Forestry University, Beijing; 100083, China
Corresponding author:Guo, Su-Juan(gwangzs@263.net)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1262-1271
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Characterization of the forms of phosphorus (P) in four organic composts
including compost of hulls and leaves of Castanea mollissima, edible fungi residues, corn
stalks and chicken manure (BYZ), compost of edible fungi residues and chicken manure
(ZF), composts of hulls and leaves of C. mollissima, edible fungi residues and chicken
manure (BZ1 and BZ2) in Chinese chestnut producing area was conducted by sequential P
fractionation developed by Dou et al. Field trial was conducted to study the effects of
compost application on leaf phosphorus content of Castanea mollissima. The results showed
that total phosphorus content (TP) of organic composts ranked as follows: BZ1 (10.61
g·kg<sup>-1</sup>)>ZF (9.03 g·kg<sup>-1</sup>)>BYZ (8.56
g·kg<sup>-1</sup>)>BZ2 (7.68 g·kg<sup>-1</sup>), and the inorganic
phosphorus (P<inf>i</inf>) accounted for 62.88%-73.62% of the total phosphorus in the
organic composts. The content and proportion of HCl-P in the total fractionated
phosphorus (P<inf>rt</inf>) was the highest among P forms in ZF, while that of
H<inf>2</inf>O-P was the highest in BYZ, BZ1 and BZ2.The content of NaOH-P was very low
in all the composts. Active H<inf>2</inf>O-Por NaHCO<inf>3</inf>-P had the highest
inorganic phosphorus proportion (89.17%-96.00%) of all the P forms. The major
P<inf>i</inf>forms in BZ2 were H<inf>2</inf>O-and HCl-extractable P fractions, while
H<inf>2</inf>O-P<inf>i</inf>, HCl-P<inf>i</inf>and NaHCO<inf>3</inf>-P<inf>i</inf>were
major P<inf>i</inf>forms in BYZ, BZ1 and ZF. Residual-P was the predominant organic
phosphorus form, and BZ2 showed the highest Residual-P proportion of the total
fractionated phosphorus (P<inf>rt</inf>) among all the composts. Leaf phosphorus contents
per unit area of Castanea mollissima by field trial on the added phosphorus-equivalent
basis were expressed as: BZ2>BZ1>BYZ>ZF>CK. Increment of leaf phosphorus
content per unit area in Julyand per month on average showed positive relationship with
the content and proportion of H<inf>2</inf>O-P<inf>i</inf>in the total fractionated
phosphorus of composts, which presumably played a key role in leaf phosphorus absorption
of C. mollissima measured in the year of deep concentrated fertilization. The results
suggested that composts of hulls and leaves of C. mollissima, edible fungi residues and
chicken manure (BZ2) was a good choice in given area for aerobic composting raw material
system in which organic wastes from Chinese chestnut industry accounted for 80% (hulls
and leaves of Castanea mollissima and edible fungi residues accounted for 60% and 20%
respectively), which had a high proportion of H<inf>2</inf>O-P<inf>i</inf>and organic
Residual-P pool and led to the highest leaf phosphorus content of C. mollissima. ©
2017, Science Press. All right reserved.
Number of references:38
Main heading:Phosphorus
Controlled terms:Animals - Composting - Fertilizers - Fruits - Fungi - Manures
Uncontrolled terms:Castanea mollissima - Compost applications - Edible fungi residues -
Inorganic phosphorus - Leaf phosphorus - Organic phosphorus - Phosphorus form - Producing
areas
Classification code:804 Chemical Products Generally - 821.4 Agricultural Products -
821.5 Agricultural Wastes
Numerical data indexing:Percentage 2.00e+01%, Percentage 6.00e+01%, Percentage 6.29e+01%
to 7.36e+01%, Percentage 8.00e+01%, Percentage 8.92e+01% to 9.60e+01%
DOI:10.13227/j.hjkx.201608088
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 179>
Accession number:20172703864518
Title:Physico-chemical Characteristics of Individual Aerosol Particles in Marine
Atmosphere on South Hemisphere
Authors:Chi, Jian-Wei (1); Li, Chuan-Jin (2); Sun, Jun-Ying (3); Zhang, Jian (1); Wang,
Hui (1); Wang, Han-Tao (1); Li, Wei-Jun (1)
Author affiliation:(1) Environment Research Institute, Shandong University, Ji'nan;
250100, China; (2) Gold and Arid Regions Environmental and Engineering Research
Institute, Chinese Academy of Sciences, Lanzhou; 730000, China; (3) Key Laboratory of
Atmospheric Chemistry, Institute of Atmospheric Composition, Chinese Academy of
Meteorological Sciences, Beijing; 100081, China
Corresponding author:Li, Wei-Jun(liweijun@sdu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:903-910
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:During the 29th Chinese National Antarctic Research Expedition (CHIANRE),
individual particle samples were collected from South China to Antarctic during November
2012 to April 2013. A transmission electron microscopy with energy-dispersive X-ray
spectrometry (TEM-EDS) was employed to analyze the morphology, mixing state, composition,
and relative abundances of individual aerosol particles. Atmospheric particles were
classified into four types: sea salt, mineral, S-rich and C-rich. Sea salt aerosols (SSA)
were dominant in the marine particles from South China to Antarctic, and they were
further divided into three sub-types: fresh SSA, partially aged SSA, and fully aged SSA.
Partially and fully aged SSA accounted for 86% of total SSA number. Interestingly,
surface of partially aged SSA and fully aged SSA contained abundant rod-like
Na<inf>2</inf>SO<inf>4</inf>. Mineral dust particles increased in the coastal areas which
were influenced by continental air. In addition, we found that S-rich particles were
abundant at two sampling sites (the middle eastern of Indian Ocean and Antarctic inland).
The back trajectories of air masses indicated that these S-rich particles were mainly
formed via the oxidation of dimethyl sulfide (DMS) emitted from the marine
phytoplanktons. Our study suggests that the SSA aging process in the South Hemisphere
atmosphere was controlled by the DMS which is different from the SSA aging under the
influence of anthropogenic pollutants in the North Hemisphere. © 2017, Science
Press. All right reserved.
Number of references:27
Main heading:Aerosols
Controlled terms:Electron microscopy - High resolution transmission electron microscopy -
Mixing - Phytoplankton - Transmission electron microscopy
Uncontrolled terms:Antarctic - Anthropogenic pollutants - Energy dispersive X-ray
spectrometry - Individual particle analysis - Mineral dust particles - Mixing state -
Physicochemical characteristics - Sea salt aerosol
Classification code:471 Marine Science and Oceanography - 741.3 Optical Devices and
Systems - 802.3 Chemical Operations
Numerical data indexing:Percentage 8.60e+01%
DOI:10.13227/j.hjkx.201607091
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 180>
Accession number:20172703864541
Title:Recovery Performance of ANAMMOX Process after Inhibition Resulting from Seawater
Authors:Qi, Pan-Qing (1); Yu, De-Shuang (1); Li, Jin (1); Guan, Yong-Jie (1); Wei, Si-Jia
(1)
Author affiliation:(1) School of Environmental Science and Engineering, Qingdao
University, Qingdao; 266071, China
Corresponding author:Li, Jin(ljin0532@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1102-1108
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:An anaerobic sequencing batch reactor (ASBR) was operated to investigate the
recovery performance of ANAMMOX reactor after the inhibition of 100% seawater
concentration. The results showed that the nitrogen removal performance of ANAMMOX
reactor suffered inhibition of high salinity concentration. However, it could enter a
period of stable nitrogen removal efficiency again after an interim stable period and a
recovery period. The nitrogen removal rate (NRR) could reach 0.52 kg·
(m<sup>3</sup>·d)<sup>-1</sup>, which was similar to the control group, containing
10% seawater and having a NRR of 0.462 kg·(m<sup>3</sup>·d)<sup>-1</sup>.
The modified Logistic model and modified Gompertz model were revised and their
application field was broadened. The re-modified Logistic model was suggested to be used
to simulate the NRR recovery process of ANAMMOX reactor that suffered inhibition of 100%
seawater concentration. The doubling time of NRR was calculated to be 11.359 d using the
prediction formula established for the recovery time of NRR. © 2017, Science Press.
All right reserved.
Number of references:25
Main heading:Nitrogen removal
Controlled terms:Batch reactors - Nitrogen - Recovery - Seawater - Sewage - Wastewater
treatment
Uncontrolled terms:Anaerobic sequencing batch reactors - ANAMMOX - Modified Logistic
model - Modified-Gompertz model - Nitrogen removal efficiency - Nitrogen removal rates -
Recovery kinetics - Recovery performance
Classification code:452.1 Sewage - 452.4 Industrial Wastes Treatment and Disposal -
471.4 Seawater, Tides and Waves - 802.1 Chemical Plants and Equipment - 804 Chemical
Products Generally
Numerical data indexing:Percentage 1.00e+01%, Percentage 1.00e+02%
DOI:10.13227/j.hjkx.201606169
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 181>
Accession number:20172703864555
Title:Enhanced Electrokinetic Remediation of Heavy Metals Contaminated Soils by Stainless
Steel Electrodes as well as the Phenomenon and Mechanism of Electrode Corrosion and
Crystallization
Authors:Wen, Dong-Dong (1); Fu, Rong-Bing (2); Zhang, Wei (1); Gu, Ying-Ying (3)
Author affiliation:(1) School of Resource and Environmental Engineering, East China
University of Science and Technology, Shanghai; 200237, China; (2) College of
Environmental Science and Engineering, Tongji University, Shanghai; 200092, China; (3)
College of Chemical Engineering, China University of Petroleum (East China), Qingdao;
266580, China
Corresponding author:Fu, Rong-Bing(rongermmfu@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1209-1217
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Electrode corrosion and salt crystallization are important challenges that
restrict the engineering application of electrokinetic technology. In the present study,
using stainless steel as an electrode, and deionized water (DW), citric acid (CA) and
polyaspartic acid (PASP) as electrolytes, Pb/Cu-contaminated soil was remediated by
electrokinetic. All of the EK experiments were conducted in a 2 L soil cell reactor with
a moisture level of about 35% blended with 1000 mg·g<sup>-1</sup>of Pb and 778
mg·g<sup>-1</sup>of Cu under a constant voltage gradient (1 V·cm<sup>-
1</sup>, 2 V·cm<sup>-1</sup>) for 150 h. The removal efficiency of heavy metals
and influencing factors, as well as the phenomenon and mechanism of electrode corrosion
and salt crystallization were explored. The experimental results showed under the action
of electric field, the Ca in the test soil would move to the cathode, and the crystal was
formed in the alkaline condition. Additionally, the conductivity of the electrode was
reduced. During the EK process, water at the anode was primarily oxidized, undergoing a
reduction reaction at the cathode. Because H<sup>+</sup>and OH<sup>-</sup>were
transported through the soil by electromigration and electro-osmotic flow (EOF), changes
in soil pH could occur. The concentrations distribution of Pb-Cu appeared to be related
to the distribution of soil pH in the cell, which might be associated with the desorption
and hydroxide precipitation of Pb-Cu. PASP resulted in obvious inhibitory effect on the
corrosion of stainless steel electrode, CA and PASP could clearly destroy the formation
of CaCO<inf>3</inf>crystal, while barely effectively disrupted the formation of Ca(OH)
<inf>2</inf>crystal. Both CA and PASP could promote the removal of Pb, but the influence
of PASP on the removal of Cu was not obvious, and the effect of CA was very significant.
Combined with different corrosion inhibitor and reinforcing agent, stainless steel can be
chosen as the engineering application electrode in electrokinetic remediation. ©
2017, Science Press. All right reserved.
Number of references:27
Main heading:Soil pollution
Controlled terms:Alkalinity - Binary alloys - Calcium - Cathodes - Citric acid - Copper -
Copper alloys - Corrosion - Corrosion inhibitors - Crystallization - Deionized water -
Electric fields - Electrodes - Electrodynamics - Electroosmosis - Heavy metals - Lead -
Lead alloys - Pollution - Remediation - Salt removal - Soil pollution control - Soils -
Stainless steel - Welding rods
Uncontrolled terms:Electrokinetic remediation - Electrokinetic technology - Engineering
applications - Heavy metal contaminated soils - Hydroxide precipitation - Phenomenon and
mechanisms - Polyaspartic acid - Stainless steel electrode
Classification code:445.1 Water Treatment Techniques - 454.2 Environmental Impact and
Protection - 483.1 Soils and Soil Mechanics - 531 Metallurgy and Metallography -
538.2.2 Welding Equipment - 544.1 Copper - 544.2 Copper Alloys - 545.3 Steel - 546.1
Lead and Alloys - 549.2 Alkaline Earth Metals - 701 Electricity and Magnetism - 701.1
Electricity: Basic Concepts and Phenomena - 801.1 Chemistry, General - 802.3 Chemical
Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804.1 Organic
Compounds
Numerical data indexing:Electric_Field_Strength 1.00e+02V/m, Electric_Field_Strength
2.00e+02V/m, Percentage 3.50e+01%, Time 5.40e+05s, Volume 2.00e-03m3
DOI:10.13227/j.hjkx.201608195
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 182>
Accession number:20171003409548
Title:Influencing factors of bacterial activity in water distribution networks
Authors:Wang, Xiao-Dan (1, 2); Zhao, Xin-Hua (1)
Author affiliation:(1) School of Environmental Science and Engineering, Tianjin
University, Tianjin; 300072, China; (2) CECEP Consulting Co., Ltd., Beijing; 100082,
China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:622-628
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to study the variation patterns of bacterial activity in water
distributed networks, this paper studied a simulated water distribution network in a
northern China city. Microscopic examination and bacterial counts were conducted on
acridine orange-stained bacteria using fluorenscence microscopy to ensure precise
quantitative analysis. The ratio of viable bacterial count to total bacterial count was
used to characterize the overall bacterial activity in the drinking water distribution
network, as well as to study the impacts imposed by various factors. As indicated, this
method was proved to be rapid, reliable and repeatable in bacterial counts. Populations
of viable bacteria and total bacteria in water samples were 10<sup>3</sup>-
10<sup>4</sup>cells·mL<sup>-1</sup>and 10<sup>4</sup>-
10<sup>5</sup>cells·mL<sup>-1</sup>, respectively. There was a positive
correlation between the bacterial activity and water temperature, turbidity, and flow
velocity. There was also a negative correlation between bacterial activity and residual
chlorine after the operation stabilized. The capacity of different forms of bacteria in
the simulated water distribution networks with tolerance of sodium hypochlorite was in
the following order: long-rod-shaped, spherical-shaped, short-rod-shaped, and curved-
shaped. The reactivation and reproduction capability of rod-shaped bacteria was stronger.
There were more short-rod-shaped bacteria in summer water samples than in winter. ©
2017, Science Press. All right reserved.
Number of references:25
Main heading:Water distribution systems
Controlled terms:Air purification - Bacteria - Citrus fruits - Electric power
distribution - Flow velocity - Fluorescence microscopy - Potable water - Water - Water
supply systems
Uncontrolled terms:Acridine orange - Bacterial activity - Bacterial count - Distributed
networks - Drinking water distribution networks - Positive correlations - Total bacterial
count - Water distribution networks
Classification code:444 Water Resources - 446.1 Water Supply Systems - 631 Fluid Flow
- 643 Space Heating, Ventilation and Air Conditioning - 706.1.2 Electric Power
Distribution - 821.4 Agricultural Products - 931.4 Quantum Theory; Quantum Mechanics
DOI:10.13227/j.hjkx.201604029
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 183>
Accession number:20171003416412
Title:Specificity of intact ladderane lipids in anaerobic ammonium oxidizing bacteria
from four reactors
Authors:Wang, Han (1); Fang, Fang (1); Li, Kai (1); Xing, Hui (1); Guo, Jin-Song (1, 2);
Chen, You-Peng (2); Zeng, Qian-Song (1)
Author affiliation:(1) College of Urban Construction and Environmental Engineering,
Chongqing University, Chongqing; 400045, China; (2) Chongqing Institute of Green and
Intelligent Technology, Chinese Academy of Sciences, Chongqing; 400714, China
Corresponding author:Fang, Fang(fang_cqu@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:238-246
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Intact ladderane lipids are a special kind of phospholipids in the anammoxosome
membrane of AnAOB. Phospholipid organic mixture was extracted respectively from four
sludge samples in anaerobic EGSB reactor,aerobic SBR reactor, autotrophic nitrogen
removal SBBR reactor and anaerobic ammonium oxidation EGSB reactor. Phospholipid extracts
of sludge were detected by the HPLC-ESI-MS/MS method to determine the types of intact
ladderane lipids, and the specificity of intact ladderane lipids was also analyzed, at
the same time, the bacterial community structure of autotrophic nitrogen removal SBBR
reactor and anaerobic ammonium oxidation EGSB reactor was determined by high-throughput
sequencing technology. Analytical results of intact ladderane lipids showed that intact
ladderane lipids were not detected from anaerobic EGSB reactor and aerobic SBR reactor,
and were detected from autotrophic nitrogen removal SBBR reactor and anaerobic ammonium
oxidation EGSB reactor. Five kinds of intact ladderane lipids were detected in the
phospholipid extract of sludge from autotrophic nitrogen removal SBBR reactor, and seven
kinds of intact ladderane lipids were detected in the phospholipid extract of sludge from
anaerobic ammonium oxidation EGSB reactor. The results of high-throughput sequencing
confirmed that the autotrophic nitrogen SBBR reactor contained AnAOB of the genera
Candidatus Brocadia and Candidatus Jettenia, and the anaerobic ammonium oxidation EGSB
reactor contained AnAOB of the genera Candidatus Kuenenia and Candidatus Jettenia. These
results illustrated that intact ladderane lipids were the peculiar phospholipids in
AnAOB. © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Nitrogen removal
Controlled terms:Bacteria - Lipids - Nitrogen - Oxidation - Phospholipids - Throughput -
Wastewater treatment
Uncontrolled terms:Ammonium oxidizing bacteria - Anaerobic ammonium oxidation -
Analytical results - AnAOB - Autotrophic nitrogen removal - Bacterial community structure
- High-throughput sequencing - Reactor
Classification code:452.4 Industrial Wastes Treatment and Disposal - 802.2 Chemical
Reactions - 804 Chemical Products Generally - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201607221
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 184>
Accession number:20171003416422
Title:Composition and environmental adaptation of microbial community in shibahe copper
tailing in zhongtiao mountain in Shanxi
Authors:Liu, Jin-Xian (1); Li, Cui (2); Jing, Ju-Hui (3); Jia, Tong (1); Liu, Xing-Gang
(4); Wang, Xiao-Yun (1); Chai, Bao-Feng (1)
Author affiliation:(1) Institute of Loess Plateau, Shanxi University, Taiyuan; 030006,
China; (2) Faculty of Environment Economics, Shanxi University of Finance and Economic,
Taiyuan; 030006, China; (3) Institute of Biotechnology, Shanxi University, Taiyuan;
030006, China; (4) Department of Environmental Protection and Work Safety, Zhongtiaoshan
Non-ferrous Metal Group Co., Ltd., Yuanqu; 043700, China
Corresponding author:Chai, Bao-Feng(bfchai@sxu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:318-326
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to reveal the effects of heavy metal pollution on microbial community
compositions and microbial community diversity in tailing area, we conducted an
experiment by examining the microbial community in tailing water, sediments and tailing
sand in Shibahe copper tailing in Zhongtiao Mountain. Differences in microbial community
compositions in different habitats and their relationships with environmental parameters
were analyzed. The results showed that the richness and diversity of microbial community
were the largest in tailing sand, but the lowest in tailing water. Microbial community
compositions were similar between tailing water and sediments. There were significant
positive correlations between the relative abundance of the dominant family
(Sphingomonadaceae) and contents of heavy metals (Cd, Cu, Mn, Ni, Pb, Zn), while there
were significant negative correlations between relative abundances of Caulobacteraceae,
Methylobacteriaceae, Nocardioidaceae, Microbacteriaceae, Micrococcaceae, Streptococcaceae
and Paenibacillaceae and heavy metal contents. It showed that most of the bacteria were
inhibited by heavy metals, but Sphingomonadaceae had a higher tolerance to heavy metals
which may indicate that it has a potential for remediation of heavy metal contamination.
© 2017, Science Press. All right reserved.
Number of references:44
Main heading:Copper
Controlled terms:Cadmium - Heavy metals - Lead - Manganese - Microorganisms - Sediments -
Water pollution
Uncontrolled terms:Environmental adaptation - Environmental parameter - Heavy metal
contamination - Heavy metal pollution - Microbial communities - Microbial community
composition - Negative correlation - Positive correlations
Classification code:453 Water Pollution - 461.9 Biology - 483 Soil Mechanics and
Foundations - 531 Metallurgy and Metallography - 543.2 Manganese and Alloys - 544.1
Copper - 546.1 Lead and Alloys - 549.3 Nonferrous Metals and Alloys excluding Alkali
and Alkaline Earth Metals
DOI:10.13227/j.hjkx.201606201
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 185>
Accession number:20171003416396
Title:Correlation between ldi-based land use types and water quality in sanshan island of
Taihu Lake National Wetland Park, Suzhou
Authors:Yang, Zhao-Hui (1); Su, Qun (1); Chen, Zhi-Hui (1); Bai, Jun-Wu (1); Qian, Xin-
Qiang (1); Zhang, Zhi-Min (1)
Author affiliation:(1) School of Environmental Science & Engineering, Suzhou
University of Science and Technology, Suzhou; 215009, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:104-112
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Sanshan island of Taihu Lake National Wetland Park in Suzhou was taken as a case
study to explore the relationship between land use types and water quality under
different spatial and temporal conditions. Firstly, principal component analysis was used
to calculate the comprehensive index of water quality for a given sampling site.
Secondly, landscape development intensity index (LDI), which can represent combined
effects of land use types, was calculated based on GIS spatial analysis technology.
Finally, overall correlation between water quality and land use types was obtained by
using Pearson correlation analysis. The results showed that the water quality varied with
the spatial distribution of the wetland park. Totally, water quality of west region was
good and water quality of east region was poor; Built-up land and water quality
integrated index exhibited obvious positive correlation. And natural water and water
quality index was significantly negatively correlated; By building relationship of water
quality index and LDI index within 100, 150, 200, 250, 300, 350, 400, 450 and 500 m
radius buffer, Pearson's r values between them were 0.641, 0.678, 0.691, 0.685, 0.691,
0.695, 0.680, 0.653 and 0.649 respectively (P<0.01). These statistics indicated
obvious and stable overall correlation between land use types and water quality. This can
reflect a variety of land use types'comprehensive effects on wetland water quality, and
partly overcome the weakness of incomplete and difficult explanation for water quality
changes with single type of land use. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Quality control
Controlled terms:Correlation methods - Geographic information systems - Lakes - Land use
- Landforms - Principal component analysis - Water quality - Wetlands
Uncontrolled terms:Comprehensive indices - Land use type - Landscape development
intensities - Pearson correlation analysis - Positive correlations - Principle component
analysis - Water quality indexes - Wetland parks
Classification code:403 Urban and Regional Planning and Development - 445.2 Water
Analysis - 481.1 Geology - 903.3 Information Retrieval and Use - 913.3 Quality
Assurance and Control - 922.2 Mathematical Statistics
Numerical data indexing:Size 4.50e+02m, Size 5.00e+02m
DOI:10.13227/j.hjkx.201606122
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 186>
Accession number:20171003416399
Title:Change and influencing factors of dissolved carbon and dissolved nitrogen in water
of the three gorges reservoir
Authors:Fan, Zhi-Wei (1, 2); Hao, Qing-Ju (1, 2); Huang, Zhe (1, 2); Chai, Xue-Si (1, 2);
Jiang, Chang-Sheng (1, 2)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400716, China; (2) Key Laboratory of Eco-environments in Three Gorges
Reservoir Region, Ministry of Education, Chongqing; 400716, China
Corresponding author:Jiang, Chang-Sheng(jiangcs@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:129-137
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to understand the changes of dissolved carbon and dissolved nitrogen in
the water of Three Gorges Reservoir, this research was carried out once a week by the
bank of Yangtze River in Fuling beach from March 2011 to August 2012, and the variation
characteristics of dissolved C, N composition and their source were analyzed. The results
showed that the concentration of DOC ranged from 0.64 mg·L<sup>-1</sup>to 9.07
mg·L<sup>-1</sup>, and had obvious seasonal change: summer>spring and
autumn>winter. Annual total input of DOC was 1.78 × 10<sup>9</sup>kg, the
seasonal change trend of the total input of DOC was similar to that of the concentration
of DOC; The concentration of DTN ranged from 2.59 mg·L<sup>-1</sup>to 4.35
mg·L<sup>-1</sup>: spring>winter>summer>autumn, annual total input was
1.32 × 10<sup>9</sup>kg,the seasonal input changed in the order of
summer>autumn>spring>winter, among them DON, NO<inf>3</inf><sup>-</sup>-N
accounted for 30.35%-63.45% and 35.87%-67.72%, respectively. DOC was affected by
precipitation and air temperature, and mainly came from the exogenous input, in the
spring and summer its exogenous input increased with the increase of rainfall runoff, but
in the autumn and winter the endogenous contribution increased; DTN was relatively
affected by human emissions and water dilution. Correlation analysis showed that there
was a significant negative correlation between DOC and DON (P<0.05), DOC/DON ratio
usually reflects the source of the DOM, the DOC/DON in the water of three gorges
reservoir ranged from 0.35 to 7.28, the source of DOM had obvious seasonal
characteristics. DOC/DON was the highest in summer, and the DOM mainly came from
watershed erosion; DOC/DON was the lowest in winter, and the DOM mainly came from living
sewage and endogenous field; the DOC/DON ratios in spring and autumn were higher than
those in winter and lower than those in summer, and the DOM sources included watershed
erosion, living sewage and endogenous field. © 2017, Science Press. All right
reserved.
Number of references:35
Main heading:Reservoirs (water)
Controlled terms:Dissolution - Erosion - Nitrogen - Precipitation (meteorology) - Sewage
- Watersheds
Uncontrolled terms:Correlation analysis - Dissolved nitrogen - Influencing factors -
Negative correlation - Seasonal characteristics - Seasonal variation - Three gorges
reservoir - Variation characteristics
Classification code:441.2 Reservoirs - 443.3 Precipitation - 444.1 Surface Water -
452.1 Sewage - 802.3 Chemical Operations - 804 Chemical Products Generally
Numerical data indexing:Mass_Density 6.40e-04kg/m3 to 9.07e-03kg/m3, Percentage 3.04e+01%
to 6.35e+01%, Percentage 3.59e+01% to 6.77e+01%
DOI:10.13227/j.hjkx.201606031
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 187>
Accession number:20171003416423
Title:Spatial distribution and source of perfluorinated compounds in urban soil from part
of cities in Anhui Province, China
Authors:Li, Fa-Song (1, 2, 3); Ni, Hui (1); Huang, Han-Yu (1); Xu, Zhi-Bing (1); Zhang,
Qian (1); Li, Chang-Xia (1); Huang, Wen-Xiu (1); Jin, Tao-Sheng (2)
Author affiliation:(1) College of Environmental Resources, Anqing Normal University,
Anqing; 246011, China; (2) Key Laboratory of Pollution Processes and Environmental
Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin;
300071, China; (3) State Key Laboratory of Environmental Chemistry and Ecotoxicology,
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing;
100085, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:327-332
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to explore the spatial distribution and source of perfluorinated
compounds (PFCs), eleven mixed urban soil samples were collected from 7 cities in Anhui
Province in 2013. Fifteen individual PFCs were detected by ultra-performance liquid
chromatography-tandem mass spectrometry (UPLC-MS/MS), and principal components analysis
was used to trace the different sources of PFCs in urban soil. The results showed that
the total concentration of PFCs (∑PFCs) ranged from 1.15 to 5.98 ng·g<sup>-
1</sup>dry weight (dw), with an average concentration of 2.69 ng·g<sup>-1</sup>.
perfluorooctane sulfonate (PFOS) with a concentration range of n.d. -3.56
ng·g<sup>-1</sup>and an average concentration of 0.96 ng·g<sup>-1</sup>was
the dominant PFC contaminant, followed by perfluorooctane acid (PFOA) with a
concentration range of n.d. -2.89 ng·g<sup>-1</sup>and an average concentration of
0.64 ng·g<sup>-1</sup>. The highest ∑PFCs concentration in all selected mixed
urban soil samples was from Chuzhou City with the value of 5.89 ng·g<sup>-1</sup>,
followed by Jingxian County of Xuancheng City (4.04 ng·g<sup>-1</sup>).
Interestingly, the PFOS concentration was as high as 3.56 ng·g<sup>-1</sup>in
Jingxian County, accounting for 88.1% of the total PFCs concentration, which might be
influenced by paper industry in this area. Comparing to other soil samples in China,
∑PFCs concentration of urban soil from Anhui Province was at middle level. Over 60%
of ∑PFCs in urban soil of Anhui province could be attributed to the four principal
components, represented by PFOA, perfluorobutane sulfonate, perfluorododecanoic acid,
perfluorobutane acid and PFOS. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Soil surveys
Controlled terms:Drug products - Liquid chromatography - Mass spectrometry - Paper and
pulp industry - Principal component analysis - Soils - Spatial distribution
Uncontrolled terms:Anhui province - Perfluorinated compound (PFCs) - Perfluorinated
compounds - Perfluorooctane sulfonates - Principal components analysis - Source - Ultra
performance liquid chromatography tandem mass spectrometry (UPLC MS/MS) - Urban soils
Classification code:483.1 Soils and Soil Mechanics - 801 Chemistry - 811.1 Pulp and
Paper - 921 Mathematics - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 6.00e+01%, Percentage 8.81e+01%
DOI:10.13227/j.hjkx.201605019
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 188>
Accession number:20171003409564
Title:Effects of different vegetation types and reclamation years on soil bacterial
community structure in reclaimed mine areas
Authors:He, Long (1); Li, Yan-Qin (1); Li, Bin-Chun (1); Li, Jun-Jian (2)
Author affiliation:(1) Key Laboratory of Chemical Biology and Molecular Engineering of
Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan; 030006,
China; (2) Institute of Loess Plateau, Shanxi University, Taiyuan; 030006, China
Corresponding author:Li, Yan-Qin(yanqin@sxu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:752-759
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Effects of different vegetation types (Ulmus pumila, Larix gmelinii, Armeniaca
vulgaris, Picea asperata and Robinia pseudoacacia) and reclamation years (15 and 20
years) on soil bacterial community structure in reclaimed Antaibao opencast mine areas
were investigated using polymerase chain reaction-denaturing gradient gel electrophoresis
(PCR-DGGE) and clone sequencing. For 20-year reclaimed soils, the significantly highest
and lowest bacterial diversity were found in U. pumila and A. vulgaris stand,
respectively, whereas no significant differences were found between the other three
vegetation types. Under 15-year plantations, soil bacterial diversity index of P.
asperata was significantly higher than that of R. pseudoacacia. Soil bacterial diversity
index significantly increased in R. pseudoacacia planted soils but decreased in P.
asperata treatment with the increase of reclaimed years. No significant change of soil
bacterial community structure was observed in the same reclamation years based on the
similarity coefficient analysis, cluster analysis and principal component analysis (PCA).
Pearson correlation analysis demonstrated that bacterial diversity index was
significantly positively correlated with soil pH. Nitrospira, Sphingomonas, Arthrobacter,
Brachybacterium, Rhizobium as well as Mesorhizobium, which play important roles in the
nitrogen cycle, degradation of polycyclic aromatic hydrocarbons and other organic matter,
were identified by clone sequencing of the DGGE bands. Our results indicated that U.
pumila and P. asperata were conducive to the recovery of soil bacterial diversity. The
most dominant bacterial community from reclaimed mine soil would be beneficial for
restoring wasteland contaminated soil and improving soil fertility. © 2017, Science
Press. All right reserved.
Number of references:26
Main heading:Reclamation
Controlled terms:Aromatic hydrocarbons - Bacteria - Cloning - Cluster analysis -
Correlation methods - Electrophoresis - Polycyclic aromatic hydrocarbons - Polymerase
chain reaction - Principal component analysis - Social sciences - Soil pollution - Soils
- Vegetation
Uncontrolled terms:Bacterial community structure - Functional bacteria - Mine areas -
PCR-DGGE - Pearson correlation analysis - Polymerase chain reaction-denaturing gradient
gel electrophoreses (PCR-DGGE) - Similarity coefficients - Soil bacterial community
Classification code:461.8.1 Genetic Engineering - 483.1 Soils and Soil Mechanics - 723
Computer Software, Data Handling and Applications - 801 Chemistry - 804.1 Organic
Compounds - 922.2 Mathematical Statistics - 971 Social Sciences
Numerical data indexing:Age 1.50e+01yr, Age 2.00e+01yr
DOI:10.13227/j.hjkx.201607200
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 189>
Accession number:20171003409559
Title:Compositions, sources and health risks of polycyclic aromatic hydrocarbons (PAHs)
in surface dusts from driving-schools in a city of Henan Province, China
Authors:Chen, Yi-Nan (1); Ma, Jian-Hua (1, 2); Duan, Hai-Jing (1); Wei, Lin-Heng (1)
Author affiliation:(1) Institute of Natural Resources and Environment, Henan University,
Kaifeng; 475004, China; (2) Collaborative Innovation Center on Yellow River Civilization
of Henan Province, Kaifeng; 475004, China
Corresponding author:Ma, Jian-Hua(mjh@henu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:711-720
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The contamination of polycyclic aromatic hydrocarbons (PAHs) in surface dusts
attracts great attentions due to their properties of threatening human health. Twenty-
nine surface dust samples were collected from driving-schools in a city of Henan.
Concentrations of 16 priority PAHs were analyzed by gas chromatography-mass spectrometry
(GC-MS). The health risks exposed to dust PAHs for three different scenarios (working for
5 a, 10 a and 20 a in driving-school) were estimated by the health risk assessment model
(ILCRs). Source identification was analyzed by diagnostic ratio, composition analysis,
and principal component analysis. The results showed that concentrations of the ∑PAHs
in dusts ranged from 198.21 to 3 400.89 μg·kg<sup>-1</sup>, with a mean of
908.72 μg·kg<sup>-1</sup>. Among individual PAHs, the contents of naphthalene
(Nap), phenanthrene (Phe), anthracene (Ant) and fluoranthene (Flu) were higher, and the
content of dibenzo[a, h]anthracene (DBA) was the lowest. The dominant compounds were 2-3
ring PAHs, which accounted for 55.79%, while the 4-6 ring PAHs accounted for 44.21%. The
health risks exposed to PAHs in dust in three different scenarios were
9.27×10<sup>-8</sup>, 1.85×10<sup>-7</sup>, and 3.71×10<sup>-
7</sup>respectively; only sample J11 was with potential health risk in scenario 3, and
the other samples were all without risks. Average daily doses by dermal contact of dust
particles for the PAHs was the main exposure way. PAHs in dusts of driving-school were
mainly originated from the combustion of fossil fuels and mixture combustion. The major
sources of dust PAHs in farmland area driving-schools were natural gas and diesel
combustion (56.44%), coal combustion (26.55%), gasoline combustion and the leakage
(17.01%); dust PAHs in industrial area driving-schools were from mixture combustion
(76.26%), gasoline combustion and the leakage (22.85%), coking and coal combustion
(0.89%); and dust PAHs in mixed area driving-schools were from coal combustion (45.57%),
natural gas and diesel combustion (45.41%), gasoline combustion and the leakage (9.02%).
The concentrations and health risks of heavy metals in dusts were closely related to the
surroundings around driving-schools and the previous land use status. © 2017,
Science Press. All right reserved.
Number of references:36
Main heading:Coal combustion
Controlled terms:Anthracene - Aromatic compounds - Aromatic hydrocarbons - Aromatization
- Chemical analysis - Chromatography - Coal - Coal dust - Coking - Dust - Elementary
particle sources - Fossil fuels - Gas chromatography - Gasoline - Health - Health risks -
Heavy metals - Hydrocarbons - Land use - Mass spectrometry - Mixtures - Naphthalene -
Natural gas - Polycyclic aromatic hydrocarbons - Principal component analysis - Risk
assessment - Risk perception - Societies and institutions
Uncontrolled terms:Composition analysis - Diagnostic ratios - Diesel combustion -
Driving-school - Gas chromatography-mass spectrometries (GC-MS) - Polycyclic aromatic
hydrocarbons (PAHS) - Potential health risks - Source identification
Classification code:403 Urban and Regional Planning and Development - 451.1 Air
Pollution Sources - 461.6 Medicine and Pharmacology - 461.7 Health Care - 522 Gas
Fuels - 523 Liquid Fuels - 524 Solid Fuels - 531 Metallurgy and Metallography - 801
Chemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804.1 Organic
Compounds - 901.1.1 Societies and Institutions - 914.1 Accidents and Accident
Prevention - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 1.70e+01%, Percentage 2.29e+01%, Percentage 2.66e+01%,
Percentage 4.42e+01%, Percentage 4.54e+01%, Percentage 4.56e+01%, Percentage 5.58e+01%,
Percentage 5.64e+01%, Percentage 7.63e+01%, Percentage 8.90e-01%, Percentage 9.02e+00%
DOI:10.13227/j.hjkx.201607119
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 190>
Accession number:20171003416425
Title:Effects of different water managements and soil Eh on migration and accumulation of
Cd in rice
Authors:Tian, Tao (1); Zeng, Min (1); Zhou, Hang (1); Xu, Jun (1); Yang, Wen-Tao (1); Gu,
Jiao-Feng (1); Zou, Jia-Ling (1); Zhang, Ping (1); Peng, Pei-Qin (1); Liao, Bo-Han (1)
Author affiliation:(1) College of Environmental Science and Engineering, Central South
University of Forestry and Technology, Changsha; 410004, China
Corresponding author:Liao, Bo-Han(liaobh1020@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:343-351
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A pot experiment was conducted to study the effects of four modes of water
managements on soil Eh values, bioavailability of soil Cd, migration and accumulation of
Cd in rice. These four modes of water managements were moistening throughout the entire
period of rice growth (M), moistening before filling stage and flooding after filling
stage (M-F), flooding before filling stage and moistening after filling stage (F-M), and
flooding throughout the entire period of rice growth (F). The results indicated that the
exchangeable contents of Cd increased firstly and then declined with the soil Eh values
changing from negative to positive. Compared with M, the other three modes (M-F, F-M, and
F) significantly reduced the contents of Cd in all rice tissues, including roots, stems,
husks and brown rice. Meanwhile, Cd contents in brown rice due to the treatments of M-F
and F were 0.19 mg·kg<sup>-1</sup>and 0.10 mg·kg<sup>-1</sup>,
respectively. These Cd contents were lower than the limits of 0.2 mg·kg<sup>-
1</sup>in national food safety standard (GB 2762-2012). Compared with M, the other three
modes significantly decreased Cd accumulation amounts in the aboveground parts of rice
and also decreased Cd translocation factors in rice. There were significant positive
exponential relations between soil Eh values and Cd accumulation amounts in the
aboveground parts of rice, Cd translocation factors in rice, or Cd contents in brown
rice. The rice biomass due to M-F treatment reached the maximum among the four modes. It
was worthy to be mentioned that although Weiyou 46 was considered a variety rice with
high Cd accumulation, Cd content in rice brown of Weiyou 46 could be lower than 0.2
mg·kg<sup>-1</sup>in the 5 mg·kg<sup>-1</sup>of Cd contaminated soil
through proper water managements. In summary, M-F treatment ensured high rice yield with
low Cd contents in brown rice and could be recommended as the irrigation mode in rice
production. Simultaneously, maintaining soil Eh value between -160-130 mV was also
important after the filling stage. © 2017, Science Press. All right reserved.
Number of references:40
Main heading:Soil pollution
Controlled terms:Bioaccumulation - Biochemistry - Filling - Floods - Food safety - Soils
- Water management
Uncontrolled terms:Cd accumulation - Cd-contaminated soils - Exponential relation -
Irrigation modes - Migration and accumulation - Rice - Rice production - Translocation
factor
Classification code:461.6 Medicine and Pharmacology - 461.9 Biology - 483.1 Soils and
Soil Mechanics - 691.2 Materials Handling Methods - 801.2 Biochemistry
Numerical data indexing:Voltage -1.60e-01V
DOI:10.13227/j.hjkx.201605234
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 191>
Accession number:20171003416401
Title:Characteristics of nitrogen transport and its source trace in loess plateau's dam
watershed in alternating wet and dry seasons: a case study of yangjuangou watershed
Authors:Jia, Jun-Jie (1, 2); Gao, Yang (1, 2); Chen, Wei-Liang (1); Hao, Zhuo (1); Wang,
Ya-Feng (3); Chen, Li-Ding (3)
Author affiliation:(1) Key Laboratory of Ecosystem Network Observation and Modeling,
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of
Sciences, Beijing; 100101, China; (2) University of Chinese Academy of Sciences, Beijing;
100049, China; (3) State Key Laboratory of Urban and Regional Ecology, Research Center
for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085, China
Corresponding author:Gao, Yang(gaoyang@igsnrr.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:147-155
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this study, we wanted to explore the impacts of N wet deposition on N export
and trace the N source by isotopic method through monitoring N wet deposition in Loess
Plateau's Dam Watershed in alternating wet and dry seasons, through measuring N wet
deposition, rainfall-runoff and base flow process and analyzing concentration change of
different forms of N. The results showed that there were 11 rainfall events in the 2015
wet season, in which N wet deposition load reached 814.18 kg and N deposition flux was
about 4.26 kg·hm<sup>-2</sup>, while there were three rainfall events in the 2015
dry season, in which N wet deposition load reached 155.58 kg and N deposition flux was
0.83 kg·hm<sup>-2</sup>, so it presented a great seasonal variability. By
collecting the dynamic process of four rainfall events, we found that, different rainfall
intensity had different influence on N export process. The contribution of N wet
deposition of four rainfall events to N export in watershed was 16.94 kg. The ratio that
N output load of rainfall and river in watershed N output load was 14.45%-64.84%, which
showed that the contribution of rainfall to watershed N transport was big. The variation
range of δ<sup>15</sup>N in Loess Plateau's Dam Watershed was big, which was -
0.844‰-12.791‰, and the δ<sup>18</sup>O was within the range of 8.166
‰-15.115 ‰ in the dam watershed. © 2017, Science Press. All right
reserved.
Number of references:30
Main heading:Watersheds
Controlled terms:Dams - Deposition - Drought - Isotopes - Landforms - Nitrogen - Rain -
Runoff - Sediments
Uncontrolled terms:Alternating wet and dries - Concentration change - Loess Plateau -
Nitrogen transport - Output load - Rainfall intensity - Seasonal variability - Wet
deposition
Classification code:441.1 Dams - 443.3 Precipitation - 444.1 Surface Water - 481.1
Geology - 483 Soil Mechanics and Foundations - 802.3 Chemical Operations - 804
Chemical Products Generally
Numerical data indexing:Mass 1.56e+02kg, Mass 1.69e+01kg, Mass 8.14e+02kg, Percentage
1.44e+01% to 6.48e+01%
DOI:10.13227/j.hjkx.201604091
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 192>
Accession number:20171003416424
Title:Effects of biochar pyrolyzed at varying temperatures on soil organic carbon and its
components: influence on the soil active organic carbon
Authors:Zhao, Shi-Xiang (1); Yu, Xiao-Ling (1); Li, Zhong-Hui (1); Yang, Yan (1); Liu,
Dan (1); Wang, Xu-Dong (1, 2); Zhang, A-Feng (1)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) Key Laboratory Plant Nutrition and the Agri-
environment in Northwest China, Ministry of Agriculture, Yangling; 712100, China
Corresponding author:Zhang, A-Feng(zhangafeng@nwsuaf.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:333-342
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Soil active organic carbon is the most important carbon pool and a good
indicator in ecosystem management due to its great significance in soil carbon cycling
and soil quality. In order to investigate the effect of biochar(BC)addition on soil
organic matter fractions, apple tree twigs were used to produce BC at 300, 400, 500 and
600℃, respectively. Elemental analysis and Fourier transform infrared (FTIR)
spectroscopy were used to determine the characteristics of BC. Four kinds of BC were
added into soils at five application rates(0, 0.5%, 1%, 2% and 3%) and incubated at
25℃ in lab for over 360 days. Soil organic carbon (SOC), microbial biomass carbon
(MBC), water soluble organic carbon (WSOC) and readily oxidized organic carbon (ROC) were
measured during the incubation. The mass fraction of carbon (C) in the generated BC
ranged from 62.20%-80.01%, while hydrogen (H) ranged from 2.72%-5.18% and Oxygen (O)
ranged from 15.98%-30.92%. The increasing temperature increased the mass fraction of C,
while decreased the O and H mass content, as well as the ratio of H/C and O/C. The
addition of BC significantly increased SOC, and the treatments amended with BC500 had the
highest increments. Compared with the control treatment (CK), the addition of BC produced
at temperatures below 400℃ increased the contents of MBC, WSOC and ROC during the
incubation, at the end of the incubation, BC300 treatments significantly increased the
contents by 38.25%, 82.09% and 63.53% (P<0.05), respectively; BC400 treatments
significantly increased the contents by 26.07%, 65.61% and 48.09% (P<0.05),
respectively; while lower contents of MBC, WSOC and ROC were found in the treatments
amended with BC produced at temperatures above 400℃ after 40-60 d incubation. After
360 d of incubation, the contents of MBC, WSOC and ROC were significantly decreased by
0.27%,13.48% and 14.67% in BC500 treatments and 7.80%,14.66% and 15.79% in BC600
treatments (except for the MBC in BC500 treatment) (P<0.05). The relative contents of
ROC ranged from 3.39% to 15.65%, BC application decreased the relative content of ROC,
suggesting that the increase was in proportion to the stability of organic carbon in the
soil. Considering the content and quality of SOC, when the BC products were applied to
the Loutu soil, 500℃ was the optimal temperature for preparing apple-derived BC due
to its significant increase of the soil organic carbon and a slight decrease of the
relative content of soil active organic carbon. © 2017, Science Press. All right
reserved.
Number of references:50
Main heading:Organic carbon
Controlled terms:Fourier transform infrared spectroscopy - Fruits - Soils
Uncontrolled terms:Bio chars - Ecosystem management - Increasing temperatures - Microbial
biomass carbon - Soil organic carbon - Soil organic matters - Varying temperature -
Water-soluble organic carbon
Classification code:483.1 Soils and Soil Mechanics - 801 Chemistry - 804.1 Organic
Compounds - 821.4 Agricultural Products
Numerical data indexing:Age 9.86e-01yr, Percentage 1.00e+00%, Percentage 1.47e+01%,
Percentage 1.58e+01%, Percentage 1.60e+01% to 3.09e+01%, Percentage 2.00e+00%, Percentage
2.61e+01%, Percentage 2.70e-01%, Percentage 2.72e+00% to 5.18e+00%, Percentage 3.00e+00%,
Percentage 3.39e+00% to 1.57e+01%, Percentage 3.82e+01%, Percentage 5.00e-01%, Percentage
6.22e+01% to 8.00e+01%, Percentage 6.56e+01%, Percentage 7.80e+00%, Percentage 8.21e+01%
DOI:10.13227/j.hjkx.201604058
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 193>
Accession number:20171003409531
Title:Variations in aerosol optical depth over three northeastern provinces of China, in
2003-2014
Authors:Zhang, Chen-He (1, 3); Zhao, Tian-Liang (1); Wang, Fu (2); Xu, Xiang-De (3); Su,
Hang (4); Cheng, Xing-Hong (3); Tan, Cheng-Hao (1)
Author affiliation:(1) Key Laboratory for Aerosol-Cloud-Precipitation of China
Meteorological Administration, Collaborative Innovation Center on Forecast and Evaluation
of Meteorological Disasters, Nanjing University of Information Science & Technology,
Nanjing; 210044, China; (2) National Satellite Meteorological Center, China
Meteorological Administration, Beijing; 100081, China; (3) State Key Laboratory of Severe
Weather, Chinese Academy of Meteorological Sciences, Beijing; 100081, China; (4)
Meteorological Observatory of Liaoning Province, Shenyang; 110166, China
Corresponding author:Zhao, Tian-Liang(josef_zhao@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:476-484
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on the MODIS-Aqua aerosol optical depth (AOD) products from 2003 to 2014,
Nighttime Lights Time data from DMSP satellites and basic meteorological data, the AOD
spatial distributions of interannual and seasonal variations over three northeastern
provinces of China(Liaoning, Jilin, Heilongjiang) were analyzed. It was found that there
was a northeast-southwest area of high annual average AOD composed of Dalian, Shenyang,
Changchun, Harbin and other cities, the 12-year average AOD value was 0.4-0.8. The low
AOD occurred in the eastern and northern areas of the three northeastern provinces of
China, where the forest-covering rate was high, and the 12-year average AOD value was
less than 0.3. The seasonal variations of annual average AOD showed an increasing trend
from spring to summer, then decreased in autumn and increased again in winter. The
interannual variations of AOD over three northeastern provinces of China showed a
decreasing trend in most areas, but the increasing trend occurred in the northeast-
southwest region with the axis formed by Shenyang, Changchun and Harbin, revealing the
polarization in recent 10 years over three northeastern provinces of China. In addition,
spatial distribution of annual average AOD over three northeastern provinces of China in
the years of strong and weak Western North Pacific Summer Monsoon was studied. Affected
by the surface wind field, annual average AOD in weak monsoon years was higher than that
in strong monsoon years. © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Atmospheric thermodynamics
Controlled terms:Aerosols - Atmospheric aerosols - Meteorology - Optical properties -
Radiometers - Spatial distribution
Uncontrolled terms:Aerosol optical depths - Interannual variation - MODIS - Three
northeastern provinces of China - Western north pacific summer monsoons
Classification code:443.1 Atmospheric Properties - 741.1 Light/Optics - 921
Mathematics - 944.7 Radiation Measuring Instruments
Numerical data indexing:Age 1.00e+01yr, Age 1.20e+01yr
DOI:10.13227/j.hjkx.201608043
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 194>
Accession number:20171003416420
Title:Effects of different agricultural practices on soil carbon pool in North China
Plain
Authors:Shi, Xiao-Xia (1); Zhao, Yi (1); Zhang, Lin (1); Wu, Wen-Liang (1); Meng, Fan-
Qiao (1)
Author affiliation:(1) College of Resources and Environmental Sciences, China
Agricultural University, Beijing; 100193, China
Corresponding author:Meng, Fan-Qiao(mengfq@cau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:301-308
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:North China Plain is an important region of grain production. Soil fertility and
grain production in this region are significantly influenced by the levels of soil carbon
and nitrogen. In order to explore the effects of agricultural practices on the levels of
soil carbon and nitrogen, a long-term field experiment was started in 1999 in Quzhou
County, Hebei Province. Four treatments, including following nature (F), tillage without
straw (N), no tillage with crushed straw incorporation (S), and tillage with crushed
straw incorporation (TS), were chosen to collect soil samples at the layers of 0-20 cm
and 20-40 cm in 2013. Soil organic carbon (SOC), soil inorganic carbon (SIC), total
carbon (TC), total nitrogen (TN), δ<sup>13</sup>C<inf>SOC</inf>,
δ<sup>13</sup>C<inf>SIC</inf>and δ<sup>15</sup>N were analyzed. The results
indicated that compared with F, SOC stocks of N, S and TS decreased by 21.6%, 12.3% and
3.4% in the 0-20 cm soil layer, but the changes of SIC stocks were not significant. In
the 20-40 cm soil layer, the changes of the SOC stocks were not significant, but the SIC
stocks increased by 4.1% (N), 7.3% (S) and 5.0% (TS) compared to F, respectively. Major
contribution of SIC increase was the pedogenic inorganic carbonate (PIC), which increased
by 97%-261% in the farmland soil. In the soil layer of 0-20 cm, the values of
δ<sup>15</sup>N, δ<sup>13</sup>C<inf>SIC</inf>and
δ<sup>13</sup>C<inf>SOC</inf>in the farmland treatments were higher than those of
F, meanwhile, the values of δ<sup>13</sup>C<inf>SOC</inf>were significantly higher
than that of F. In the soil layer of 20-40 cm, the values of δ<sup>15</sup>N and
δ<sup>13</sup>C<inf>SIC</inf>were lower than those of F, but the value of
δ<sup>13</sup>C<inf>SOC</inf>showed the opposite trend. In North China Plain,
lithogenic inorganic carbonate (LIC) of farmland soil decomposed and PIC increased by the
soil-crop system, which provided CO<inf>2</inf>for the formation of PIC, and straw
returning was an effective agricultural practice to restore the soil carbon decreased by
tillage. There should be more long-term monitoring and studies for the impacts of crop
straw incorporation and tillage on SOC and SIC, especially for soil in deeper layers.
© 2017, Science Press. All right reserved.
Number of references:40
Main heading:Soils
Controlled terms:Agricultural machinery - Agriculture - Carbon - Carbon dioxide - Crops -
Farms - Grain (agricultural product) - Nitrogen - Organic carbon - Soil surveys
Uncontrolled terms:Crop straws - Natural isotopes - North China Plain - Soil inorganic
carbons - Soil organic carbon
Classification code:483.1 Soils and Soil Mechanics - 804 Chemical Products Generally -
821 Agricultural Equipment and Methods; Vegetation and Pest Control
Numerical data indexing:Percentage 1.23e+01%, Percentage 2.16e+01%, Percentage 3.40e+00%,
Percentage 9.70e+01% to 2.61e+02%, Size 0.00e+00m to 2.00e-01m, Size 2.00e-01m to 4.00e-
01m
DOI:10.13227/j.hjkx.201605212
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 195>
Accession number:20172703864515
Title:Concentration Characteristics and Sources of Trace Metals in PM<inf>2.5</inf>During
Wintertime in Beijing
Authors:Qiao, Bao-Wen (1, 2); Liu, Zi-Rui (2); Hu, Bo (2); Liu, Jing-Yun (1, 2); Pang,
Ni-Ni (1, 2); Wu, Fang-Kun (2); Xu, Zhong-Jun (1); Wang, Yue-Si (2)
Author affiliation:(1) Department of Environmental Science and Engineering, Beijing
University of Chemical Technology, Beijing; 100029, China; (2) State Key Laboratory of
Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric
Physics, Chinese Academy of Sciences, Beijing; 100029, China
Corresponding author:Xu, Zhong-Jun(xuzj@mail.buct.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:876-883
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To study the characteristics and sources of trace metals in
PM<inf>2.5</inf>during wintertime in Beijing, PM<inf>2.5</inf>samples were collected from
December 2014 to January 2015 by a middle volume sampler in the urban area of Beijing for
30 consecutive days. The mass concentration of PM<inf>2.5</inf>was measured by filter
membrane weighting method, and 16 kinds of trace metals were determined by inductively
couple plasma-mass spectrometry (ICP-MS). In addition, the pollution characteristics and
sources of trace metals were analyzed by enrichment factor (EF) method and factor
analysis, respectively. The results showed that the concentrations of five elements (i.e.
K, Ca, Fe, Al and Mg) accounted for 90.7% of the total metal elements. The concentrations
of the metal elements changed obviously between day and night. Compared with daytime,
crustal elements like Mg and Al decreased by more than 30% while anthropogenic elements
like Cu and Pb increased by more than 40% in nighttime. Although the concentrations of
metal elements increased by nearly one time in heavy pollution days compared with clean
days, the mass percent of which in PM<inf>2.5</inf>decreased from 10.9% in clean days to
4.6% in heavy pollution days. This result suggested the accumulation of metal elements in
heavy pollution days had a minor contribution to the increased mass concentration of
PM<inf>2.5</inf>. As the pollution episode progressed, anthropogenic elements (Cu, Zn,
As, Se, Ag and Cd) increased faster than crustal elements (Al, Mg, Ca, Mn and Fe), which
showed ratios ranging from 2.9 to 5.3 for anthropogenic elements and ratios ranging from
1.2 to 1.8 for crustal elements, when compared between heavy pollution days and clean
days. In addition, the EF value of anthropogenic elements was also increased in the
pollution days, indicating the concentrations of these elements was further influenced by
the anthropogenic sources. Factor analysis showed that metal elements of
PM<inf>2.5</inf>during wintertime of Beijing were mainly from coal combustion and biomass
burning, motor vehicle and industry emissions, and re-suspension of road dust, with the
contributions of 34.2%, 25.5% and 17.1%, respectively. © 2017, Science Press. All
right reserved.
Number of references:42
Main heading:Trace elements
Controlled terms:Aluminum - Calcium - Coal combustion - Coal dust - Coal industry -
Factor analysis - Lead - Magnesium - Magnetic levitation vehicles - Mass spectrometry -
Metal analysis - Metals - Multivariant analysis - Pollution
Uncontrolled terms:Anthropogenic elements - Anthropogenic sources - Beijing - Enrichment
factors - Industry emissions - Mass concentration - Metal elements - Plasma mass
spectrometry
Classification code:503 Mines and Mining, Coal - 521 Fuel Combustion and Flame Research
- 524 Solid Fuels - 541.1 Aluminum - 546.1 Lead and Alloys - 549.2 Alkaline Earth
Metals - 801 Chemistry - 922 Statistical Methods - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 1.09e+01%, Percentage 1.71e+01%, Percentage 2.55e+01%,
Percentage 3.00e+01%, Percentage 3.42e+01%, Percentage 4.00e+01%, Percentage 4.60e+00%,
Percentage 9.07e+01%
DOI:10.13227/j.hjkx.201607144
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 196>
Accession number:20172703864537
Title:Enhanced Removal of Herbicide 2,4-dichlorophenoxyacetic Acid and Simultaneous Power
Generation in Microbial Fuel Cells
Authors:Quan, Xiang-Chun (1); Quan, Yan-Ping (1); Xiao, Zhu-Tian (1)
Author affiliation:(1) State Key Laboratory of Water Environment Simulation, School of
Environment, Beijing Normal University, Beijing; 100875, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1067-1073
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study investigated the effects of a widely used herbicide 2,4-
dichlorophenoxyacetic acid on power generation, pollutants removal from microbial fuel
cells (MFCs) and microbial community changes, and also explored anode pre-aeration for
enhanced 2,4-D removal and power generation. The results showed that when 2,4-D was
inputted to the anode chamber of MFCs which was previously enriched with acetate sodium
as the fuel, the voltage output and power density declined and the internal resistance
increased apparently. The maximum power density declined to 0.057 W·m<sup>-
2</sup>in the presence of 300 mg·L<sup>-1</sup>2,4-D comparing to 0.151
W·m<sup>-2</sup>obtained with acetate alone (850 mg·L<sup>-1</sup>), and
the internal resistance increased from 524 Ω to 1 230 Ω correspondingly. To
accelerate 2,4-D removal rate and reduce its inhibition to anode exoelectrogens, 6h pre-
aeration was applied to the anode chamber. Fast removal of 2,4-D was achieved during
aeration period and simultaneous high maximum voltage output (0.42-0.47 V) was obtained.
Anode microbial community changed after 2,4-D addition and several 2,4-D degrading
bacteria and 2,4-D tolerant exoelectrogen were enriched. MFCs could be used for 2,4-D
removal and simultaneous power generation through anode pre-aeration. © 2017,
Science Press. All right reserved.
Number of references:27
Main heading:Microbial fuel cells
Controlled terms:Anodes - Biodegradation - Electrodes - Fuel cells - Herbicides -
Microorganisms - Weed control
Uncontrolled terms:2 ,4-dichlorophenoxyacetic acid - Anode aerations - Internal
resistance - Maximum power density - Microbial communities - Microbial fuel cells (MFCs)
- Pollutants removal - Recalcitrant organics
Classification code:461.8 Biotechnology - 461.9 Biology - 702.2 Fuel Cells - 714.1
Electron Tubes - 804.1 Organic Compounds
Numerical data indexing:Electrical_Resistance 5.24e+02Ohms to 1.23e+03Ohms, Mass_Density
8.50e-01kg/m3, Surface_Power_Density 1.51e-01W/m2, Surface_Power_Density 5.70e-02W/m2,
Time 2.16e+04s, Voltage 4.20e-01V to 4.70e-01V
DOI:10.13227/j.hjkx.201608126
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 197>
Accession number:20172703864548
Title:Influencing Mechanism of Calcium Peroxide Pre-treatment on Dewatering Performance
of Waste Activated Sludge
Authors:Bai, Run-Ying (1); Chen, Zhan (1, 2); Zhang, Wei-Jun (3); Wang, Dong-Sheng (2, 3)
Author affiliation:(1) School of Civil Engineering, Inner Mongolia University of
Technology, Hohhot; 010051, China; (2) State Key Laboratory of Environmental Aquatic
Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences,
Beijing; 100085, China; (3) School of Environmental Studies, China University of
Geosciences, Wuhan; 430074, China
Corresponding author:Zhang, Wei-Jun(zhwj_1986@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1151-1158
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The evolution of sludge filteration dewaterability, floc structure and
hydrolytic kinetics with calcium peroxide oxidation pre-treatment was investigated in
this study. The effect of sludge characteristics with combined process of ferrous ion and
calcium peroxide was deeply analyzed and the result suggested that the sludge dewatering
performance was improved first and then worsened after CaO<inf>2</inf>addition. When the
dosage was 20 mg·g<sup>-1</sup>, sludge reached its optimal dewaterability. At the
same time, sludge was effectively dissolved and the floc structure became loose and
broken with the increase of organic matters in the supernatant. Moreover, sludge
solubilization process followed the pseudo-zero-order kinetic equation well and the
reaction rate of sludge with CaO<inf>2</inf>treatment was 15.2 mg·L<sup>-
1</sup>·h<sup>-1</sup>. In addition, sludge floc lysis was enhanced by the
treatment of ferrous ion and calcium peroxide oxidation, whilst sludge dewaterability was
improved due to the reconstruction of sludge floc structure by the iron ions produced.
This study provided theoretical basis for application of calcium peroxide pre-treatment
and its combining technique in sludge treatment. © 2017, Science Press. All right
reserved.
Number of references:28
Main heading:Waste treatment
Controlled terms:Calcium - Dewatering - Integral equations - Ions - Iron - Metal ions -
Oxidation - Peroxides
Uncontrolled terms:Activated sludge - Calcium peroxides - Dewaterability - Ferrous ion -
Influencing mechanisms - Oxidation pre-treatment - Pseudo-zero-order kinetics - Waste
activated sludges
Classification code:452.4 Industrial Wastes Treatment and Disposal - 531.1 Metallurgy -
545.1 Iron - 549.2 Alkaline Earth Metals - 802.2 Chemical Reactions - 802.3 Chemical
Operations - 921.2 Calculus
DOI:10.13227/j.hjkx.201607056
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 198>
Accession number:20172703864525
Title:Seasonal Pollution Characteristics and Source Identification of Polycyclic Aromatic
Hydrocarbons and Organochlorine Pesticides in Surface Water of Baiyangdian Lake
Authors:Wang, Yi-Zhen (1, 2); Zhang, Jun (1); Zhou, Xu-Shen (1); Kong, Fan-Qing (1); Xu,
Ming-Xia (1)
Author affiliation:(1) Haihe River Water Environmental Monitoring Center, Tianjin;
300170, China; (2) Key Laboratory of Pollution Processes and Environmental Criteria,
Ministry of Education, Nankai University, Tianjin; 300071, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:964-978
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Seasonal variations of 17 polycyclic aromatic hydrocarbons (PAHs) and 15
persistent organochlorine pesticides (OCPs) were analyzed during spring and summer in
surface water from 12 sampling sites of Baiyangdian lake to elucidate their seasonal
pollution characteristics and sources. The results showed that total concentrations of
PAHs in surface water of Baiyangdian lake ranged from 35.38 to 88.06 ng·L<sup>-
1</sup>(46.57 ng·L<sup>-1</sup>in average) in spring and 25.64 to 301.41
ng·L<sup>-1</sup>(76.23 ng·L<sup>-1</sup>in average) in summer,
respectively, and total concentrations of OCPs ranged from 0.69 to 4.50
ng·L<sup>-1</sup>(1.77 ng·L<sup>-1</sup>in average) in spring and 0.11 to
3.20 ng·L<sup>-1</sup>(0.90 ng·L<sup>-1</sup>in average) in summer,
respectively. Seasonal pollution characteristics of PAHs in surface water during two
different seasons showed that the total concentration of PAHs was much higher in summer
than in spring at three sampling sites of Baiyangdian lake including Qiantang, Guancheng
and Anxin bridge, and the level of PAHs in spring was much higher than that in summer at
the other nine sites. While seasonal pollution characteristics of OCPs showed that the
total concentration of OCPs was much higher in summer than in spring in samples of
Guancheng sites, and the level of OCPs in spring was slightly higher than that in summer
in the rest of samples. From the perspective of spatial and temporal variations in the
composition patterns of PAHs and OCPs in surface water of Baiyangdian lake, PAHs were
predominated by 3-ring PAHs with 45.92% and 61.36% (52.60% in average) of total PAHs in
spring, while in summer Nap was the chief component of 2-ring PAHs in three sampling
sites including Qiantang, Guancheng and Anxin bridge with 84.91%, 91.04% and 78.10% of
the total, respectively, and 3-ring PAHs were primary pollutants in the other nine sites
with 37.14% to 53.90% (48.94% in average) of the total. Residues of HCHs and DDTs were
detected in different degrees and β-HCH was the main pollutant at all sampling sites
with 29.94% and 100% (59.87% in average) of total HCHs in spring, while β-HCH was
the predominant compounds at five sampling sites with 57.55% and 80.23% (61.98% in
average) in summer and α-HCHs and δ-HCH were abundant at other sampling
sites. Source analysis based on isomer ratios indicated that the main source of PAHs in
Baiyangdian lake originated from combustion sources, and additional sources for several
sampling sites could be petroleum processes. Ratios of HCH isomers and DDT congeners
confirmed that environmental historical residues and long range atmospheric transport
were the major sources of OCPs contamination in the study area. Compared with the water
quality standard of China and other countries or organizations, concentrations of PAHs
and OCPs in surface water of Baiyangdian lake did not exceed the target values of the
standard. However, the concentrations of α-HCH and p,p'-DDD in Anxin bridge and
Quantou sites exceeded the limit of human health ambient water quality criteria developed
by EPA, which reflected that α-HCH and p,p'-DDD would have a potential hazards risk
to the residents from Baiyangdian district. © 2017, Science Press. All right
reserved.
Number of references:85
Main heading:Lake pollution
Controlled terms:Aromatic compounds - Aromatic hydrocarbons - Aromatization - Atmospheric
movements - Environmental Protection Agency - Health hazards - Health risks -
Hydrocarbons - Isomers - Lakes - Organic pollutants - Pesticides - Pollution -
Polycyclic aromatic hydrocarbons - River pollution - Surface waters - Water pollution -
Water quality
Uncontrolled terms:Baiyangdian lakes - Long-range atmospheric transports - Organochlorine
pesticides - Persistent organochlorine pesticides - Polycyclic aromatic hydrocarbons
(PAHS) - Source apportionment - Spatial and temporal variation - Water quality standard
Classification code:443.1 Atmospheric Properties - 444.1 Surface Water - 445.2 Water
Analysis - 453 Water Pollution - 454.2 Environmental Impact and Protection - 461.7
Health Care - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial
Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds
Numerical data indexing:Mass_Density 1.77e-09kg/m3, Mass_Density 4.66e-08kg/m3,
Mass_Density 7.62e-08kg/m3, Mass_Density 9.00e-10kg/m3, Percentage 2.99e+01%, Percentage
4.59e+01%, Percentage 4.89e+01%, Percentage 5.26e+01%, Percentage 5.75e+01%, Percentage
5.99e+01%, Percentage 6.20e+01%, Percentage 7.81e+01%, Percentage 8.49e+01%, Percentage
9.10e+01%
DOI:10.13227/j.hjkx.201608150
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 199>
Accession number:20172703864540
Title:Effect of Wastewater Nitrogen Concentrations on Nitrogen Removal Ability of
Myriophyllum aquaticum
Authors:Ma, Yong-Fei (1); Yang, Xiao-Zhen (1); Zhao, Xiao-Hu (1); Hu, Cheng-Xiao (1, 3);
Tan, Qi-Ling (1); Sun, Xue-Cheng (1); Wu, Jin-Shui (2)
Author affiliation:(1) College of Resource and Environmental Science, Huazhong
Agricultural University, Wuhan; 430070, China; (2) Institute of Subtropical Agriculture,
Chinese Academy of Sciences, Changsha; 410000, China; (3) Hubei Provincial Engineering
Laboratory for New-type Fertilizer, Wuhan; 430070, China
Corresponding author:Hu, Cheng-Xiao(hucx@mail.hzau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1093-1101
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Myriophyllum aquaticum, which is an important plant for constructed wetlands,
has powerful purification ability for wastewater, however, the relationship between
nitrogen removal ability of Myriophyllum aquaticum and wastewater nitrogen concentrations
is still unclear. In this study, pot culture experiment was conducted to investigate the
effect of wastewater nitrogen levels on nitrogen removal ability of Myriophyllum
aquaticum. 7 nitrogen levels were set up as following: 2, 5, 10, 20, 100, 200, 400
mg·L<sup>-1</sup>. The results showed that when the wastewater nitrogen
concentration was not higher than 20 mg·L<sup>-1</sup>, Myriophyllum aquaticum
with 20 mg·L<sup>-1</sup>of nitrogen concentration grew best in the first 3 weeks;
the removal rates of total and ammonia nitrogen were nearly 100% after one week, while
the nitrate nitrogen concentrations were very low and varied little; the nitrogen
contents of Myriophyllum aquaticum had no significant change, the upper part nitrogen
content was higher than the underneath, Myriophyllum aquaticum could also remove nitrogen
from the sediment. When wastewater nitrogen concentrations were 100-400
mg·L<sup>-1</sup>, Myriophyllum aquaticum with 200 mg·L<sup>-1</sup>of
nitrogen concentration grew best from 4th to 5th week; the removal rates of total
nitrogen were 76.5%, 71.5% and 48.1% in the three treatments, and the removal rates of
ammonia nitrogen were 99.6%, 99.3% and 60.2% respectively, while the removal rates of
nitrate nitrogen were all about 50% and there was no significant difference among
treatments; the nitrogen contents of Myriophyllum aquaticum increased with nitrogen
levels, but the difference between upper part and underneath was not remarkable, showing
uniform distribution; nitrogen accumulations by Myriophyllum aquaticum and sediment
accounted for 27.9%-48.4% and 12.2%-24.4% of total nitrogen loss in wastewater.
Therefore, the nitrogen removal ability of Myriophyllum aquaticum should be inhibited by
higher wastewater nitrogen level, the ammonia nitrogen removal rate was significantly
higher than nitrate, the mechanism of Myriophyllum aquaticum nitrogen accumulation and
distribution should also be affected by wastewater nitrogen level, and further research
is needed. © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Nitrogen removal
Controlled terms:Ammonia - Grain (agricultural product) - Nitrates - Nitrogen -
Wastewater - Wastewater treatment - Wetlands
Uncontrolled terms:Ammonia nitrogen - Ammonia nitrogen removal - Myriophyllum aquaticum -
Nitrate nitrogen - Nitrogen accumulation - Nitrogen concentrations - Nitrogen removal
rates - Uniform distribution
Classification code:452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and
Disposal - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 821.4
Agricultural Products
Numerical data indexing:Mass_Density 1.00e-01kg/m3 to 4.00e-01kg/m3, Mass_Density 2.00e-
01kg/m3, Mass_Density 2.00e-02kg/m3, Mass_Density 4.00e-01kg/m3, Percentage 1.00e+02%,
Percentage 1.22e+01% to 2.44e+01%, Percentage 2.79e+01% to 4.84e+01%, Percentage 4.81e
+01%, Percentage 5.00e+01%, Percentage 6.02e+01%, Percentage 7.15e+01%, Percentage 7.65e
+01%, Percentage 9.93e+01%, Percentage 9.96e+01%
DOI:10.13227/j.hjkx.201606098
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 200>
Accession number:20172703864523
Title:Nitrification and Denitrification Rates in a Small Tributary, Nanhe River, of Three
Gorge Dam Reservoir During Water Collection and Release Events
Authors:Wang, Jing (1, 2); Liu, Hong-Jie (2); Lei, Yu (2); Xu, Jing (2); Song, Li-Yan (2,
3); Li, Yong (1)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Environmental Microbiology and Ecology Research Center,
Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences,
Chongqing; 400714, China; (3) Key Laboratory of Reservoir Aquatic Environment, Chongqing
Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing;
400714, China
Corresponding author:Song, Li-Yan(songliyan@cigit.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:946-953
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Three Gorge Dam Reservoir (TGDR) is a new forming ecosystem and its sediments
dynamics remains unknown. Investigation on the nitrification and denitrification dynamics
of sediments of TGDR during water collection and release events-anti-seasonal actions-is
critical for nitrogen management in TGDR. In this study, we sampled sediments in three
locations (upstream, center, and downstream along water flow) of South River, located in
a typical small tributary, Nanhe, in TGDR during 2015 water collection and release events
to characterize its physiochemical property and determine its nitrification and
denitrification rates using acetylene inhabitation method. The results showed that the
concentrations of physiochemical parameters of sediments (total carbon, total nitrogen,
nitrate, and ammonia) were significantly higher (P<0.05) in water collection event
than those in water release event, suggesting there were external materials (e.g., soil)
entering into TGDR. Furthermore, the nitrification rate of sediments in water collection
event [194.06 μmol·(m<sup>2</sup>·h)<sup>-1</sup>] was significantly
higher than that in water release event [16.52 μmol·(m<sup>2</sup>·h)
<sup>-1</sup>]. Sediments nitrification rate was positively correlated to the
physiochemical parameters. In contract, the denitrification rate of sediments was higher
in water release event [647.20 μmol·(m<sup>2</sup>·h)<sup>-1</sup>] than
that in water collection event [24.04 μmol·(m<sup>2</sup>·h)<sup>-
1</sup>). Accordingly, the denitrification rate of sediments was negatively correlated to
the physiochemical parameters. © 2017, Science Press. All right reserved.
Number of references:47
Main heading:Rivers
Controlled terms:Carbon - Denitrification - Nitrification - Nitrogen - Reservoirs (water)
- Sediments - Water resources
Uncontrolled terms:Dam reservoirs - Denitrification rate - Nitrification rates - Small
tributaries - Water collection - Water release
Classification code:441.2 Reservoirs - 444 Water Resources - 483 Soil Mechanics and
Foundations - 802.2 Chemical Reactions - 804 Chemical Products Generally
DOI:10.13227/j.hjkx.201606202
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 201>
Accession number:20172703864528
Title:Distribution Characteristics and Health Risk Assessment of Heavy Metals in Surface
Water Around Electroplating Factories
Authors:Yu, Cong-Cong (1); Zhao, Wei-Tuo (2); Gao, Xiao-Feng (3); Cheng, Sheng-Gao (1);
Huang, Ting (1); Yin, Yi-Meng (1); Zhao, Zhen-Li (1)
Author affiliation:(1) School of Environmental Studies, China University of Geosciences,
Wuhan; 430074, China; (2) The Center of Environmental Engineering and Assessment, No.203
Research Institute of Nuclear Industry, Xianyang; 712000, China; (3) Graduate School of
Engineering, University of Tokyo, Tokyo; 113-8656, Japan
Corresponding author:Zhao, Wei-Tuo(weituo2006@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:993-1001
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To investigate the distribution characteristics and the human health risks of
heavy metals in surface water samples, 30 samples were collected around electroplating
factories of Machong, Shatian, Humen, Changan and Dalingshan towns in Dongguan city, 8
heavy metals (As, Cd, Cr, Cu, Hg, Ni, Pb and Zn) contents were measured and analyzed by
using multivariate statistical analysis method and human health risk assessment model.
The results showed that the maximum concentrations of Cr, Pb and the average
concentration of Hg exceeded Environmental Quality Standards for Surface Water (GB 3838-
2002, Grade III), the concentrations of Cr, Cu, Hg, Ni, Zn and Pb during rainy season
were all higher than that those during dry season. Multivariate statistical analysis
indicated that Cd, Cr, Cu, Ni and Zn mainly originated from the contaminated
electroplating factories, Pb and Hg were mainly affected by the traffic sources, and As
was significantly correlated with natural sources. Health risk assessment result of
surface water indicated that heavy metal pollution would lead to high health risks
especially for children, and the health risks of heavy metals through drinking pathway
were 2-3 orders of magnitude higher than the values caused by dermal contact pathway.
Moreover, carcinogenic risks caused by Cr and As were higher than the maximum allowance
levels (5×10<sup>-5</sup>a<sup>-1</sup>), and non-carcinogenic risks of the heavy
metals (10<sup>-10</sup>-10<sup>-7</sup>a<sup>-1</sup>) decreased in the order of
Pb>Ni>Cu>Hg>Zn, which were 4-5 orders of magnitude lower than the maximum
allowance levels. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Risk assessment
Controlled terms:Cadmium - Copper - Electron emission - Electroplating - Health - Health
risks - Heavy metals - Lead - Metal analysis - Multivariant analysis - Nickel - Potable
water - River pollution - Statistical methods - Surface waters - Water pollution - Zinc
Uncontrolled terms:Average concentration - Distribution characteristics - Environmental
quality standards - Heavy metal pollution - Human health risk assessment - Maximum
concentrations - Multivariate statistical analysis - Orders of magnitude
Classification code:444 Water Resources - 444.1 Surface Water - 453 Water Pollution -
461.6 Medicine and Pharmacology - 461.7 Health Care - 531 Metallurgy and Metallography
- 539.3.1 Electroplating - 544.1 Copper - 546.1 Lead and Alloys - 546.3 Zinc and
Alloys - 548.1 Nickel - 549.3 Nonferrous Metals and Alloys excluding Alkali and
Alkaline Earth Metals - 914.1 Accidents and Accident Prevention - 922 Statistical
Methods - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201607159
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 202>
Accession number:20172703864549
Title:Treatment Effects of Earthworm Constructed Wetlands in Different Working Conditions
Authors:Dong, Meng-Ke (1); Li, Huai-Zheng (1); Xu, Yi-Xiao (1)
Author affiliation:(1) College of Environmental Science and Engineering, Tongji
University, Shanghai; 200092, China
Corresponding author:Li, Huai-Zheng(lihz@tongji.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1159-1166
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The feasibility of a new sludge treatment technology of earthworm constructed
wetlands was tested by adding earthworm into the traditional sludge dying reed beds. The
dewatering and stabilization effects of the upper layer sludge were tested under
different sludge loading rates of 48, 65, 80 kg·(m<sup>2</sup>·a)<sup>-
1</sup>, different earthworm stocking densities of 0, 0.43, 0.54, 0.65 kg·m<sup>-
2</sup>and different sludge loading frequencies. The results indicated that it was
feasible to provide a shelter for earthworm during the loading period by setting a damper
with a buried depth of 10 mm. The addition of earthworm could effectively improve the
dewatering and stabilization effects of earthworm constructed wetlands, by lowering the
DHA and decreasing the moisture content and VS of sludge by 15% and 10% respectively. The
stabilization effects of earthworm constructed wetlands reached the best under the
stocking density of 0.65 kg·m<sup>-2</sup>. With the increase of sludge loading
rate and decrease of loading frequency, the running efficiency of earthworm constructed
wetlands would be worse. © 2017, Science Press. All right reserved.
Number of references:23
Main heading:Wetlands
Controlled terms:Dewatering - Stabilization
Uncontrolled terms:Constructed wetlands - Earthworm - Reed bed - Sludge dewatering -
Sludge stabilization
Classification code:802.3 Chemical Operations
Numerical data indexing:Percentage 1.00e+01%, Percentage 1.50e+01%, Size 1.00e-02m
DOI:10.13227/j.hjkx.201609212
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 203>
Accession number:20172703864546
Title:Identification and Influence of Quorum Sensing on Anaerobic Ammonium Oxidation
Process
Authors:Chen, Shu-Han (1); Li, An-Jie (1); Wang, Yue-Xing (2); Wu, Ling-Juan (1)
Author affiliation:(1) Key Laboratory of Water and Sediment Sciences, School of
Environment, Beijing Normal University, Beijing; 100875, China; (2) Shenzhen Water Group
Co., Ltd., Shenzhen; 518001, China
Corresponding author:Li, An-Jie(liaj@bnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1137-1143
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Anaerobic ammonium oxidation (ANAMMOX), an innovative nitrogen removal
technology, has good prospects for applications. However, ANAMMOX bacteria grow slowly
and are hardly accumulated in bioreactors. In this study, a UASB reactor inoculated with
sludge from landfill leachate treatment plant was used for the start-up of ANAMMOX
process. Besides, exogenous quorum sensing signals (DSF and AHL) were added to improve
the adhesion of ANAMMOX sludge. The results showed that the UASB successfully started the
ANAMMOX process within 150 days of operation. The total nitrogen removal rate reached 80%
and the proportion of ANAMMOX bacteria rose to 20%. There was a low concentration of AHLs
signal molecules in the ANAMMOX sludge. If the β-position substituent group of AHL
added was a carbonyl group (including 3-oxo-C<inf>6</inf>-HSL, 3-oxo-C<inf>8</inf>-HSL,
3-oxo-C<inf>10</inf>-HSL and 3-oxo-C<inf>12</inf>-HSL), the adhesion growth ability of
the ANAMMOX sludge could be improved. In the case of dosing with AHL molecules without
β-position substituent groups, only C<inf>6</inf>-HSL and C<inf>12</inf>-HSL could
promote the adhesion of ANAMMOX sludge. The additions of C<inf>8</inf>-HSL,
C<inf>10</inf>-HSL and DSF all had negative effects on the adhesion of ANAMMOX sludge.
© 2017, Science Press. All right reserved.
Number of references:25
Main heading:Nitrogen removal
Controlled terms:Adhesion - Bacteria - Leachate treatment - Molecules - Nitrogen -
Oxidation - Wastewater treatment
Uncontrolled terms:Anaerobic ammonium oxidation - Anammox bacteria - Landfill leachate
treatment - Low concentrations - Microbial community structures - N-Acyl Homoserine
lactones - Quorum-sensing - Total nitrogen removal
Classification code:452.4 Industrial Wastes Treatment and Disposal - 802.2 Chemical
Reactions - 804 Chemical Products Generally - 931.3 Atomic and Molecular Physics - 951
Materials Science
Numerical data indexing:Age 4.11e-01yr, Percentage 2.00e+01%, Percentage 8.00e+01%
DOI:10.13227/j.hjkx.201607027
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 204>
Accession number:20172703864543
Title:Quick Start-up of Anaerobic Ammonium Oxidation Process
Authors:Lü, Gang (1); Xu, Le-Zhong (1, 2, 3); Shen, Yao-Liang (1, 2, 3); Wu, Peng
(1, 2, 3); Zhang, Ting (1); Cheng, Chao-Yang (1)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Jiangsu Collaborative Innovation
Center of Technology and Material of Water Treatment, Suzhou; 215009, China; (3) Jiangsu
Key Laboratory of Environmental Science and Engineering, Suzhou; 215009, China
Corresponding author:Xu, Le-Zhong(kgre505@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1116-1121
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to study the quick start-up process of anaerobic ammonium oxidation
(ANAMMOX), two types of reactors with different hydraclic flow state inoculated with
aerobic nitrifying sludge were investigated, the membrane bioreactor (MBR) and anaerobic
baffled reactor (ABR), respectively. The result showed that both reactors successfully
started up ANAMMOX process. The start-up period of the MBR (90 d) was 20% shorter than
the ABR (111 d). During the stable operation, the average nitrogen (NH<inf>4</inf><sup>
+</sup>-N+NO<inf>2</inf><sup>-</sup>-N) removal capacity of 0.098 kg·
(m<sup>3</sup>·d)<sup>-1</sup>in the MBR was also higher than that of 0.089
kg·(m<sup>3</sup>·d)<sup>-1</sup>in the ABR. In addition, the differences
of sludge morphology were obvious in the two reactors; flocculent sludge was developed in
the MBR while ANAMMOX granular sludge was mainly formed in the first compartment of the
ABR. Moreover, the quantitative relationship analysis between NH<inf>4</inf><sup>
+</sup>-N, NO<inf>2</inf><sup>-</sup>-N and NO<inf>3</inf><sup>-</sup>-N showed that the
MBR system contained more kinds of bacteria with nitrogen removal function, compared to
the ABR, and it was therefore more conducive to the removal of nitrogen. MBR exhibited a
more excellent performance for ANAMMOX start-up. © 2017, Science Press. All right
reserved.
Number of references:28
Main heading:Nitrogen removal
Controlled terms:Bioreactors - Nitrogen - Nitrogen compounds - Nitrogen oxides -
Oxidation - Wastewater treatment
Uncontrolled terms:Anaerobic ammonium oxidation - Anaerobic baffled reactor - Flocculent
sludge - Membrane bio reactor (MBR) - Quick start-up - Relationship analysis - Removal
capacity - Sludge morphology
Classification code:452.4 Industrial Wastes Treatment and Disposal - 802.1 Chemical
Plants and Equipment - 802.2 Chemical Reactions - 804 Chemical Products Generally -
804.2 Inorganic Compounds
Numerical data indexing:Percentage 2.00e+01%
DOI:10.13227/j.hjkx.201609051
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.v
<RECORD 1>
Accession number:20172603860960
Title:Day-Night Variation and Source Apportionment of Carbonaceous Aerosols in
PM<inf>10</inf>During Spring and Summer of Lanzhou
Authors:Ma, Li (1, 3); Yu, Ye (1, 2); Wang, Bo (1); Zhao, Su-Ping (1); Li, Gang (4)
Author affiliation:(1) Northwest Institute of Eco-Environment and Resources, Chinese
Academy of Sciences, Lanzhou; 730000, China; (2) Pingliang Land Surface Process &
Severe Weather Research Station, Chinese Academy of Sciences, Pingliang; 744015, China;
(3) College of Resources and Environment, University of Chinese Academy of Sciences,
Beijing; 100049, China; (4) Institute of Arid Meteorology, China Meteorological
Administration, Lanzhou; 730020, China
Corresponding author:Yu, Ye(yyu@lzb.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1289-1297
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The purpose of this study was to investigate the characteristics and source
apportionment of carbonaceous aerosols in PM<inf>10</inf>for the daytime and nighttime
during spring and summer over Lanzhou. The samples were collected from 1 April 2015 to 30
August 2015, daytime samples were collected during 08:00 to 20:00 and nighttime samples
during 20:00 to 08:00 on the next day, and organic carbon (OC) and elemental carbon (EC)
concentrations were measured. The results showed that PM<inf>10</inf>, OC and EC
concentrations were (136.0±84.3), (12.4±3.2), (2.3±0.7)
μg·m<sup>-3</sup>during the daytime, and (196.0±109.2),
(16.0±5.3), (5.0±2.1) μg·m<sup>-3</sup>during the nighttime. The
mass concentrations of PM<inf>10</inf>, OC and EC in the nighttime were higher than those
during the daytime. The ratios of secondary organic carbon to total organic carbon were
higher in the daytime than nighttime, suggesting that the secondary organic carbon
pollution was more serious in the daytime. In sand-dust weather, the concentrations of
PM<inf>10</inf>and OC were higher than those in non-dust weather, while the EC
concentration was close to that in non-dust weather. Secondary organic carbon and total
carbon aerosols were higher in sand-dust weather, but the contribution to the
PM<inf>10</inf>was relatively low. In addition, principal component analysis on the eight
carbon fractions of non-dust weather indicated that coal combustion, vehicle exhaust and
biomass burning were the major sources for carbonaceous aerosol during the daytime, while
coal combustion, dust, diesel exhaust and biomass burning played important roles in the
nighttime. © 2017, Science Press. All right reserved.
Number of references:41
Main heading:Organic carbon
Controlled terms:Aerosols - Carbon - Coal combustion - Coal dust - Dust - Particles
(particulate matter) - Principal component analysis
Uncontrolled terms:Biomass-burning - Carbonaceous aerosol - Elemental carbon - Mass
concentration - Secondary organic carbon - Source apportionment - Total Organic Carbon -
Vehicle exhausts
Classification code:451.1 Air Pollution Sources - 521 Fuel Combustion and Flame
Research - 524 Solid Fuels - 804 Chemical Products Generally - 804.1 Organic Compounds
- 922.2 Mathematical Statistics - 951 Materials Science
DOI:10.13227/j.hjkx.201608156
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 2>
Accession number:20172603861005
Title:Forms Distribution and Ecotoxicity of Three Forms of Sulfonamides in Root-Soil
Interface of Maize
Authors:Jin, Cai-Xia (1); Si, Xiao-Wei (1, 2); Wang, Wan-Feng (1); Wang, Chun-Feng (1);
Wang, Zi-Ying (1); Zhang, Qin-Wen (1); Wang, Wan (2)
Author affiliation:(1) Henan Key Laboratory of Environmental Pollution Control, School of
Environment, Henan Normal University, Xinxiang; 453007, China; (2) Judicial
Authentication Center of Ecological Environmental Damage of Henan, Zhengzhou; 450011,
China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1683-1688
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Forms distribution and ecotoxicity of sulfonamides in root-soil interface of
maize were studied by chemical analysis and luminescent bacteria toxicity assay. The
results indicated that the water soluble residues were the main form in rhizosperic
soils, and the organic solvent extractable residues were the main form in far-rhizosperic
soils. The three forms of sulfonamides showed relatively lower toxicity to luminescent
bacteria with the relative inhibition rates less than 30%. The toxicity of water soluble
residues was lower than that of the organic solvent extractable residues, and the bound
residues showed the lowest toxicity to luminescent bacteria. The contents and relative
inhibition rates of water soluble residues in rhizosperic soils were higher than those in
far-rhizosperic soils, while the contents and relative inhibition rates of organic
solvent extractable and bound residues in rhizosperic soils were lower than those in
far-rhizosperic soils. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Toxicity
Controlled terms:Amides - Bacteria - Chemical analysis - Forming - Luminescence - Organic
solvents - Soils - Solvents - Sulfur compounds
Uncontrolled terms:Bound residues - Ecotoxicity - Inhibition rate - Luminescent bacteria
- Soil interfaces - Sulfonamides - Toxicity assays - Watersoluble
Classification code:461.7 Health Care - 483.1 Soils and Soil Mechanics - 741.1
Light/Optics - 803 Chemical Agents and Basic Industrial Chemicals - 804.1 Organic
Compounds
Numerical data indexing:Percentage 3.00e+01%
DOI:10.13227/j.hjkx.201606036
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 3>
Accession number:20172603860973
Title:Effects of Coastal Organic Pollution on Bacterioplankton Community in Sanmen Bay
Authors:Dai, Wen-Fang (1, 2); Guo, Yong-Hao (1); Yu, Wei-Na (1, 2); Xiong, Jin-Bo (1, 2)
Author affiliation:(1) School of Marine Sciences, Ningbo University, Ningbo; 315211,
China; (2) Collaborative Innovation Center for Zhejiang Marine High-Efficiency and
Healthy Aquaculture, Ningbo; 315211, China
Corresponding author:Xiong, Jin-Bo(xiongjinbo@nbu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1414-1422
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Coastal organic pollution has become a serious problem, thus it is imperative to
assess the potential effects on the marine environment. The microbes are generally the
first responders to environmental perturbation, which may serve as biological indicators
for pollution levels. In this study, we collected surface seawater samples from Sanmen
Bay and adjacent Yushan Reserve. Using an Illumina sequencing based analysis of bacterial
16S rRNA gene, we explored the effect of organic pollution on the bacterioplankton
community compositions (BCCs). The results showed that the organic pollution (A) was
4.57±2.41 at Sanmen Bay, which was significantly higher (P<0.001) than that in
Yushan Reserve (0.43±0.74). The bacterial diversity and community compositions
differed significantly between the two locations. Specifically, the relative abundance of
Actinobacteria, α-Proteobacteria, β-Proteobacteria, SAR406 in Sanmen Bay was
significantly higher than that in Yushan Reserve, while Bacteroidetes, Cyanobacteria,
Planctomycetes exhibited an opposite change pattern. A multivariate regression tree
analysis showed that the bacterial diversity was primarily affected by water pH, organic
pollution and chlorophyll a levels, which respectively explained 27.7%, 15.6% and 6.7%
variance in bacterial diversity. A redundancy analysis (RDA) revealed that the
bacterioplankton community was significantly controlled by pH, salinity and organic
pollution, which cumulatively explained 14.8% of the variation in BCCs. In addition, the
geographic distance was significantly (P<0.001) correlated with BCCs, accounting for
4.42% variance, which suggested that the spatial distribution of bacterioplankton
community was non-random. Moreover, this study screened 23 sensitive bacterial families,
whose relative abundances were significantly associated the organic pollution. For a
given bacterial family, the change pattern of relative abundance was consistent with its
known function, thus holding the potential for indicating organic pollution levels. To
conclude, this study showed that the increasing coastal organic pollution had altered
BCCs, and enriched the relative abundances of potential pathogens. Furthermore, the
sensitive bio-indicators were screened for evaluating the increasing organic pollution
level. © 2017, Science Press. All right reserved.
Number of references:49
Main heading:Water pollution
Controlled terms:Marine pollution - Pollution - Redundancy - Regression analysis - RNA
Uncontrolled terms:Bio-indicative bacterial family - Community composition - Driving
factors - Organic pollution - Redundancy analysis
Classification code:453 Water Pollution - 461.2 Biological Materials and Tissue
Engineering - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 1.48e+01%, Percentage 1.56e+01%, Percentage 2.77e+01%,
Percentage 4.42e+00%, Percentage 6.70e+00%
DOI:10.13227/j.hjkx.201610003
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 4>
Accession number:20172603860999
Title:N<inf>2</inf>O Consumption Ability of Submerged Paddy Soil and the Regulatory
Mechanism
Authors:Wang, Ling (1, 2); Xing, Xiao-Yi (1, 2); Qin, Hong-Ling (1); Liu, Yi (1); Wei,
Wen-Xue (1)
Author affiliation:(1) Taoyuan Station of Agro-Ecology Research, Institute of Subtropical
Agriculture, Chinese Academy of Sciences, Changsha; 410125, China; (2) University of
Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Wei, Wen-Xue(wenxuewei@isa.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1633-1639
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A large number of researches showed that the N<inf>2</inf>O negative emissions
from flooding paddy fields, peatlands and other wetlands ecosystem were frequent and
considerable, which is of great significance on alleviating the greenhouse gas effect.
However, there are few reports about the transformation and microbial mechanism of
N<inf>2</inf>O between atmosphere and paddy soil. The slurry of surface paddy soil (0-5
cm) was incubated in laboratory conditions, and the effect of enhanced N<inf>2</inf>O
concentrations in headspace on the N<inf>2</inf>O consumption capacity of submerged paddy
soil and the response of nosZ gene abundance were explored. The results showed that,
paddy soil under flooding and anaerobic conditions harbored very strong potential of
N<inf>2</inf>O reduction along with a relatively high nosZ gene abundance
(10<sup>8</sup>copies·g<sup>-1</sup>dry soil at DNA level). Regression analysis
presented the N<inf>2</inf>O concentrations in headspace were positively correlated
(r<sup>2</sup>=1, P<0.001) to the N<inf>2</inf>O consumption rates of paddy soil
slurry, indicating the high N<inf>2</inf>O concentration could stimulate the
N<inf>2</inf>O consumption power, to a very high rate of 4 567.99 μg·
(m<sup>2</sup>·h)<sup>-1</sup>. Meanwhile, there were no significant differences
in the high abundance of nosZ gene among N<inf>2</inf>O treatments, demonstrating the
nosZ gene abundance at DNA level might not be the main controller of N<inf>2</inf>O
consumption ability in submerged paddy soil and further study on the key microbial factor
is needed. © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Underwater soils
Controlled terms:Floods - Gas emissions - Genes - Greenhouse effect - Greenhouse gases -
Regression analysis - Soils - Wetlands
Uncontrolled terms:Anaerobic conditions - Consumption rates - Laboratory conditions - N2O
reduction - NosZ - Paddy fields - Paddy soils - Regulatory mechanism
Classification code:451 Air Pollution - 451.1 Air Pollution Sources - 461.2 Biological
Materials and Tissue Engineering - 483.1 Soils and Soil Mechanics - 922.2 Mathematical
Statistics
Numerical data indexing:Size 0.00e+00m to 5.00e-02m
DOI:10.13227/j.hjkx.201609138
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 5>
Accession number:20172603860971
Title:Vertical Stratification Characteristics of Dissolved Oxygen and Phytoplankton in
Thousand-Island Lake and Their Influencing Factors
Authors:Yu, Yan (1); Liu, De-Fu (2, 3); Yang, Zheng-Jian (2, 3); Zhang, Jia-Lei (2, 3);
Xu, Ya-Qian (2); Liu, Jin-Gao (2); Yan, Guang-Han (1)
Author affiliation:(1) College of Hydraulic and Environmental Engineering, China Three
Gorges University, Yichang; 443002, China; (2) College of Civil and Environmental
Engineering, Hubei University of Technology, Wuhan; 430068, China; (3) Key Laboratory of
Ecological Remediation of Lakes and Rivers and Algal Utilization of Hubei Province,
Wuhan; 430068, China
Corresponding author:Yang, Zheng-Jian(656637841@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1393-1402
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:According to the data collected from the five monitoring sites in front of the
dam in Thousand-island Lake in September 2015, the vertical distribution characteristics
of dissolved oxygen (DO), water temperature, pH, turbidity, conductivity and
phytoplankton were analyzed. The influencing factors of special stratification of DO and
vertical distribution of phytoplankton were also discussed. The results showed that: (1)
The vertical distribution of DO presented “the surface is higher than the
underlying” mode. DO ranged from 1.95 mg·L<sup>-1</sup>to 8.25
mg·L<sup>-1</sup>and the average concentration was 5.10 mg·L<sup>-1</sup>.
Low-oxygen zones appeared between 12 m and 20 m and the minimum concentration was 1.95
mg·L<sup>-1</sup>at 17 m. The concentration of DO maintained at a high level
between 0 m and 12 m and the vertical variance was small. Sudden drop of DO occurred
between 12 m and 20 m and there was an anoxic zone (<4.0 mg·L<sup>-1</sup>).
The concentration of DO returned to normal level between 20 m and 38 m. Then it reduced
under 38m as the water depth increased. The vertical distribution of pH showed the same
trend with that of DO and their sudden change regions appeared in the same zone. (2)
Vertical phytoplankton biomass displayed significant difference. The phytoplankton
biomass of S1, S2 and S3 presented: mid-layer>surface>bottom. But S4, S5 presented:
bottom>surface>mid-layer. In addition, the depth between 20 m and 30 m was the best
for the growth of phytoplankton. (3) The correlation analysis showed that DO and water
temperature in the thermocline were significantly correlative. The range and degree of
low-oxygen zones in Thousand-island Lake was determined by physical processes like
thermal stratification of water and direct or indirect effects of the plankton.
Phytoplankton and DO, pH showed significant negative correlation. The phytoplankton was
mainly influenced by turbulent mixing and DO stratification in the surface layer while it
was mainly influenced by light intensity at the bottom. © 2017, Science Press. All
right reserved.
Number of references:51
Main heading:Dissolved oxygen
Controlled terms:Biochemical oxygen demand - Dissolution - Lakes - Oxygen - Phytoplankton
- Temperature
Uncontrolled terms:Average concentration - Chemical factors - Correlation analysis -
Negative correlation - Phytoplankton biomass - Vertical distributions - Vertical
stratification - Water temperatures
Classification code:471 Marine Science and Oceanography - 641.1 Thermodynamics - 802.3
Chemical Operations - 804 Chemical Products Generally
Numerical data indexing:Mass_Density 1.95e-03kg/m3, Mass_Density 1.95e-03kg/m3 to 8.25e-
03kg/m3, Mass_Density 5.10e-03kg/m3, Size 0.00e+00m to 1.20e+01m, Size 1.20e+01m to
2.00e+01m, Size 1.70e+01m, Size 2.00e+01m to 3.00e+01m, Size 2.00e+01m to 3.80e+01m, Size
3.80e+01m
DOI:10.13227/j.hjkx.201606085
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 6>
Accession number:20172603860968
Title:Hanfeng Pre-reservoir Commissioning Time Variation Feature of the Hydrology and
Water Quality in Three Gorges Reservoir
Authors:Yang, Bing (1); He, Bing-Hui (1); Wang, De-Bao (1)
Author affiliation:(1) Key Laboratory of Eco-environments in the Three Gorges Reservoir
Region, College of Resources and Environment, Southwest University, Chongqing; 400715,
China
Corresponding author:He, Bing-Hui(hebinghui@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1366-1375
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Hanfeng Pre-reservoir is very rare in the world which is specially designed to
reduce the impact of Fluctuating Zone, and it is formed in Hanfeng Lake of Three Gorges
reservoir. The Hanfeng Pre-reservoir has many special hydrological characteristics and
ecological environment features based on its unique “pre-reservoir” control
mode, the wide seasonal wetland of Fluctuating Zone, the huge life pollution and
agricultural pollution, and the pressure of huge city and excessive population. HanFeng
Lake has a variety of morphological features such as lakes, rivers, and other backwater
bay, for the effect of water level regulation in Three Gorges, since the successful
commissioning of the Hanfeng Lake pre-dam system in 2015. The change of Hanfeng Lake
hydrology and water quality during the commissioning was divided into four periods by
combining Hydrological and Morphological Variation characteristics with Water quality
indicators time clustering analysis: May to August as T1 (river period); January, March
and November to December as T2 (lake period); February, April and September as T3 (water
level fluctuation period); October as T4 (algal blooms period) in 2015. Principal
component analysis and stepwise regression analysis showed that Eutrophication of Hanfeng
Lake was dominated by different dominant components at different times and the water
quality index factor which has a significant effect on the Chl-a was also different.
Cumulative contribution rates of principal components were 82.93%, 77.61%, 78.32%, 88.40%
for each period, respectively. The main water quality indicators of T1 (river period)
were DP, TP, SD, pH and the significant influencing index of Chl-a was PC<inf>2</inf>, so
Chl-a was mainly affected by water nitrogen content. The main water quality indicators of
T2 (lake period) were TN, DN, DP, TP, NO<inf>3</inf><sup>-</sup>-N and the significant
influencing index of Chl-a was PC<inf>1</inf>, so Chl-a was mainly affected by water
eutrophication including nitrogen and phosphorus nutrient status. The main water quality
indicators of T3 (water level fluctuation period) were SD, NH<inf>4</inf><sup>+</sup>-N,
DN, T and the significant influencing index of Chl-a was PC<inf>3</inf>. so Chl-a was
mainly affected by water level fluctuation. The main water quality indicators of T4
(algal blooms period) were TN, DN, DO, NH<inf>4</inf><sup>+</sup>-N, pH, permanganate
index, H, NO<inf>3</inf><sup>-</sup>-N and the significant influencing index of Chl-a was
PC<inf>3</inf>. so Chl-a was mainly affected by flow rate and hydrodynamic conditions. As
mentioned in the review, the frequent and significant water level changes during the
commissioning of Hanfeng Lake were the important factors influencing the change of
hydrological and water quality characteristics. © 2017, Science Press. All right
reserved.
Number of references:29
Main heading:Reservoirs (water)
Controlled terms:Eutrophication - Hydrology - Lake pollution - Lakes - Multivariant
analysis - Nitrogen - Pollution - Pollution control - Principal component analysis -
Quality control - Regression analysis - River pollution - Rivers - Water levels - Water
quality - Water resources
Uncontrolled terms:Commissioning - Hydrological characteristics - Multivariate
statistical analysis - Nitrogen and phosphorus - Stepwise regression analysis - Variation
characteristics - Water quality characteristics - Water quality indicators
Classification code:441.2 Reservoirs - 444 Water Resources - 445.2 Water Analysis -
453 Water Pollution - 804 Chemical Products Generally - 913.3 Quality Assurance and
Control - 922 Statistical Methods - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 7.76e+01%, Percentage 7.83e+01%, Percentage 8.29e+01%,
Percentage 8.84e+01%
DOI:10.13227/j.hjkx.201607173
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 7>
Accession number:20172603860994
Title:Pollution Characteristics and Source Analysis of Polycyclic Aromatic Hydrocarbons
in Agricultural Soils from Shandong
Authors:Ge, Wei (1); Cheng, Qi-Qi (2); Chai, Chao (2); Zeng, Lu-Sheng (2); Wu, Juan (2);
Chen, Qing-Hua (2); Zhu, Xiang-Wei (2); Ma, Dong (2)
Author affiliation:(1) College of Life Science, Qingdao Agricultural University, Qingdao;
266109, China; (2) College of Resources and Environment, Qingdao Agricultural University,
Qingdao; 266109, China
Corresponding author:Chai, Chao(chaichao1999@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1587-1596
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous environmental
contaminants that originate mainly from anthropogenic sources. PAHs have elicited much
concern because they exhibit strong toxic, carcinogenic, and mutagenic properties.
Agricultural soil is at risk of PAH contamination mainly caused by atmospheric
depositions, wastewater irrigation, or organic substances and biowaste applied as
fertilizers. The surface agricultural soils were collected from Shandong in July 2015,
and measured for 16 US EPA priority PAHs using high performance liquid chromatography
with UV and fluorescence detector. The content and composition of PAHs were analyzed. The
differences of PAHs between soils from the field for growing crops and from vegetable
greenhouses, and between soils from point sources and from non-point sources were
compared. The sources of PAHs were determined with methods of ratio between PAHs and
positive matrix factorization (PMF), and the risks of PAHs were assessed. The results
showed that the total content of 16 PAHs (∑16PAHs) ranged from 111.5
ng·g<sup>-1</sup>to 2 744.1 ng·g<sup>-1</sup>, with the mean of 556.3
ng·g<sup>-1</sup>. The content of 3-ring PAHs was relatively high, with the mean
of 201.5 ng·g<sup>-1</sup>; while the contents of 2-ring and 6-ring PAHs were
relatively low, with the mean of 39.3 ng·g<sup>-1</sup>and 43.4 ng·g<sup>-
1</sup>, respectively. According to the contamination classification in Poland, 71% of
the samples in Shangdong were weakly contaminated. Compared with other areas in China,
the content of PAHs in the agricultural soils in Shandong was in the middle range.
Acenaphthene, fluorine, and fluoranthene were the major PAH compounds, accounting for
more than 10% of the total PAHs; while the contribution of indeno (1,2,3-cd) pyrene was
low. The content of ∑16PAHs and contribution of 7 carcinogenic PAHs were
significantly higher in soils polluted by point sources than those in soils from non-
point sources. Moreover, the contribution of PAHs with 2-3 rings was significantly higher
in soils from non-point sources, while the contribution of PAHs with 4-6 rings was
significantly higher in soils polluted by point sources. There was no significant
difference in soils from vegetable greenhouses and from adjacent field soils, and the
contribution of PAHs with 3-4 rings was high. The PAH isomer pair ratios of Ant/(Ant
+Phe), Flu/(Flu+Pyr), BaA/(BaA+Chr), and InP/(InP+BP) were utilized as molecular indices
to elucidate the possible PAH sources, and the results suggested that the PAHs in the
soils were mainly from combustion. To quantitatively assess the contribution of various
sources to PAH contamination, PMF was used to analyze the sources. The sources of PAHs
were combustion of coal biomass, oil combustion from traffic, coking, and petroleum
pollution, with contribution of 42.7%, 19.3%, 22.8% and 15.2%, respectively. Toxic
equivalency factors were used to evaluate PAH contamination in the soils, and the
carcinogenicity of other PAHs relative to BaP was quantified to estimate the BaP-
equivalent concentration (TEQ<inf>BaP</inf>). The TEQ<inf>BaP</inf>of 16 PAHs
(∑16TEQ<inf>Bap</inf>) in soils from non-point sources and vegetable greenhouses was
31.69 and 44.47 ng·g<sup>-1</sup>, respectively, which were below the safe value
in Canadian soil quality guidelines. However, the ∑16TEQ<inf>Bap</inf>in some field
soils from point sources exceeded the safe value, indicating that there were potential
risks in the soils from point sources in Shandong. © 2017, Science Press. All right
reserved.
Number of references:46
Main heading:Soil pollution
Controlled terms:Agriculture - Aromatic compounds - Aromatic hydrocarbons - Aromatization
- Coal combustion - Coking - Combustion - Contamination - Environmental Protection Agency
- Factorization - Fluorescence - Greenhouses - High performance liquid chromatography -
Hydrocarbons - Liquid chromatography - Meteorological problems - Pollution - Polycyclic
aromatic hydrocarbons - Risk assessment - Risks - Soils - Vegetables
Uncontrolled terms:Atmospheric depositions - Environmental contaminant - Equivalent
concentrations - Polycyclic aromatic hydrocarbons (PAHS) - Positive Matrix Factorization
- Shandong - Source analysis - Toxic equivalency factors
Classification code:443.1 Atmospheric Properties - 454.2 Environmental Impact and
Protection - 483.1 Soils and Soil Mechanics - 524 Solid Fuels - 741.1 Light/Optics -
802.2 Chemical Reactions - 804.1 Organic Compounds - 821 Agricultural Equipment and
Methods; Vegetation and Pest Control - 914.1 Accidents and Accident Prevention - 921
Mathematics
Numerical data indexing:Percentage 1.00e+01%, Percentage 1.52e+01%, Percentage 1.93e+01%,
Percentage 2.28e+01%, Percentage 4.27e+01%, Percentage 7.10e+01%
DOI:10.13227/j.hjkx.201608199
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 8>
Accession number:20172703864524
Title:Tempo-spatial Variations and Influential Factors of Carbon Dioxide Emissions from
the Geheyan Reservoir over the Qingjiang River Basin, China
Authors:Zhao, Deng-Zhong (1); Tan, De-Bao (1); Li, Chong (2); Shen, Shao-Hong (1)
Author affiliation:(1) Changjiang River Scientific Research Institute (CRSRI), Changjiang
Water Resources Commission, Wuhan; 430010, China; (2) China Three Gorges Corporation,
Beijing; 100038, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:954-963
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Greenhouse gas emission from aquatic ecosystem will affect climate change on the
regional and global scale. So large river interception project which affects the carbon
cycle model and greenhouse gas emission from aquatic ecosystem has provoked more and more
attentions in recent years. In order to understand and evaluate the effects of typical
hydropower project construction on the aquatic ecosystem and carbon cycle, the Geheyan
Reservoir, a typical river interception project, was selected as a typical case in this
paper for measuring carbon dioxide fluxes from interface between water and atmosphere
from March, 2015 to February, 2016. The integration of the online gas analyzer and
floating box was used to obtain carbon dioxide fluxes from interface between water and
atmosphere. Data was obtained over the before dam, upstream, tributary, drawdown area and
bay area respectively for understanding the spatial Heterogeneity of carbon dioxide
fluxes. Data analysis showed that yearly mean fluxes of carbon dioxide from the Geheyan
Reservoir was (55.6918±66.3329) mg·(m<sup>2</sup>·h)<sup>-
1</sup>during measurement, which indicated that the temporal distribution was higher in
winter and lower in other seasons and the spatial variation was higher in typical bay and
lower before dam as well as drawdown zone over the reservoir. Moreover, the seasonal
variation of carbon dioxide fluxes from the interface between water and atmosphere was
very stable at Yuxiakou measurement points as a typical background area of the reservoir,
which was unexpectedly higher than those before dam and drawdown zone in the most months
during measurement. The results from data analysis also indicated that the spatial and
temporal variation of carbon dioxide fluxes from the Geheyan Reservoir was affected by
water quality parameters such as dissolved oxygen, chlorophyll, pH, water temperature and
conductivity and carbon in water, but the relationship between carbon dioxide fluxes and
other parameter was very different within each season and impound period. So the results
above will provide more supports for understanding the import pathway and transfer of
aquatic carbon cycle caused by large river interception project in China. © 2017,
Science Press. All right reserved.
Number of references:36
Main heading:Phase interfaces
Controlled terms:Aquatic ecosystems - Biochemical oxygen demand - Carbon dioxide -
Climate change - Data handling - Dissolved oxygen - Ecology - Ecosystems - Gas emissions
- Global warming - Greenhouse gases - Information analysis - Quality control -
Reservoirs (water) - Rivers - Water levels - Water quality - Watersheds
Uncontrolled terms:Carbon cycles - Carbon dioxide emissions - Carbon dioxide flux -
Qingjiang river basins - Spatial and temporal distribution - Spatial and temporal
variation - Temporal distribution - Water quality parameters
Classification code:441.2 Reservoirs - 443.1 Atmospheric Properties - 444.1 Surface
Water - 445.2 Water Analysis - 451.1 Air Pollution Sources - 454.3 Ecology and
Ecosystems - 723.2 Data Processing and Image Processing - 801.4 Physical Chemistry -
804.2 Inorganic Compounds - 903.1 Information Sources and Analysis - 913.3 Quality
Assurance and Control
DOI:10.13227/j.hjkx.201607086
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 9>
Accession number:20172703864516
Title:Online Source Analysis of Particulate Matter (PM<inf>2.5</inf>) in a Heavy
Pollution Process of Shijiazhuang City During Heating Period in 2015
Authors:Lu, Na (1); Li, Zhi-Guo (1); Zhou, Jing-Bo (1); Zhao, Xin (1); Yang, Li-Li (1);
Feng, Yuan (1); Jin, Wei (1)
Author affiliation:(1) Shijiazhuang Environmental Monitoring Center, Shijiazhuang;
050022, China
Corresponding author:Jin, Wei(jiwei65815@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:884-893
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In recent years, more and more public attention has been paid to the problem of
air pollution during the heating period in North China. This article took a heavy
pollution process of Shijiazhuang district from Nov. 24th to Dec. 4th in 2015 as an
example, and analyzed comprehensively the source apportionment in different periods, size
distribution of the PM<inf>2.5</inf>from each source in different periods, the
characteristics of mass spectra of the main emission sources and the meteorological
conditions with the method of real-time online source analysis. It turned out: the main
sources of pollutants were coal combustions, industrial discharges, vehicle exhausts and
secondary inorganic reactions. With the help of meteorological condition of low pressure
and low wind speed, the PM<inf>2.5</inf>mainly produced by coal combustions and
industrial discharges accumulated heavily and went through the second stage conversion,
leading to this heavy air pollution. The main particulate matters from coal combustions
were the mixed carbons; the main particulate matters from industrial discharges were
metals; the main particulate matters from vehicle exhausts were elemental carbon and
manganese metal; the main particulate matters from pure secondary inorganic sources were
secondary inorganic ions; the main particulate matters from dust pollution were aluminum,
calcium, iron and silicate minerals; the main particulate matters from biomass fuel
combustions were levoglucosan; the feature signal from restaurant discharges was organic
acid. Different from the distribution before and after the heavy pollution period, the
particulate matters from the 8 pollution sources presented even distribution during the
heavy pollution period. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Air pollution
Controlled terms:Carbon - Coal - Coal combustion - Coal dust - Fuels - Mass spectrometers
- Mass spectrometry - Metal analysis - Organic minerals - Pollution - Silicate minerals
- Silicates - Size distribution
Uncontrolled terms:Industrial discharges - Inorganic reactions - Mass spectra -
Meteorological condition - Online sources - Particulate Matter - Shijiazhuang City -
Source apportionment
Classification code:451 Air Pollution - 482.2 Minerals - 524 Solid Fuels - 801
Chemistry - 804 Chemical Products Generally - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201605058
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 10>
Accession number:20172703864529
Title:Speciation and Ecological Risk of Heavy Metals in Surface Sediments from Jiulong
River
Authors:Lin, Cheng-Qi (1); Hu, Gong-Ren (1, 2); Yu, Rui-Lian (1); Han, Lu (1)
Author affiliation:(1) College of Chemical Engineering, Huaqiao University, Xiamen;
361021, China; (2) State Key Laboratory of Environmental Geochemistry, Institute of
Geochemistry, Chinese Academy of Sciences, Guiyang; 550081, China
Corresponding author:Yu, Rui-Lian(ruiliany@hqu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1002-1009
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Speciation characteristics of fifteen heavy metals in seventeen surface
sediments from Jiulong River was analyzed using the modified BCR protocol and dilute
HNO<inf>3</inf>method, respectively. The results of the modified BCR protocol showed that
most of the elements (Fe, Ni, V, Tl, Ba, Sb, Ga, Cr and Sr) existed mainly in residual
fractions, and extractable fraction was dominant for Mn (83.8%), followed by Cd, Pb, Zn,
Co and Cu (80.0%, 75.5%, 74.3%, 70.8% and 57.7%). The results of dilute
HNO<inf>3</inf>method showed that the proportions of the dilute HNO<inf>3</inf>-
extractable fractions of Pb, Mn, Cd, Co, Zn and Cu were higher (70.4%, 65.4%, 58.7%,
48.4%, 44.5% and 45.5%). The assessment results of RSP (ratio of secondary phase to
primary phase) indicated that Pb, Mn, Cd, Co, Zn and Cu in surface sediments of Jiulong
River had higher ecological risks. Both extraction methods had merits and demerits
respectively. In general, the dilute HNO<inf>3</inf>method is enough to analyze the
bioavailability and ecological risk of heavy metals in sediments. © 2017, Science
Press. All right reserved.
Number of references:26
Main heading:River pollution
Controlled terms:Biochemistry - Ecology - Heavy metals - Lead - Manganese - Risk
assessment - Rivers - Sediments - Strontium - Surficial sediments - Zinc
Uncontrolled terms:Bioavailability - Dilute HNO<inf>3</inf>method - Ecological risks -
Extraction method - Jiulong River - Residual fraction - Secondary phase - Surface
sediments
Classification code:453 Water Pollution - 454.3 Ecology and Ecosystems - 483 Soil
Mechanics and Foundations - 531 Metallurgy and Metallography - 543.2 Manganese and
Alloys - 546.1 Lead and Alloys - 546.3 Zinc and Alloys - 549.2 Alkaline Earth Metals -
801.2 Biochemistry - 914.1 Accidents and Accident Prevention
Numerical data indexing:Percentage 4.45e+01%, Percentage 4.55e+01%, Percentage 4.84e+01%,
Percentage 5.77e+01%, Percentage 5.87e+01%, Percentage 6.54e+01%, Percentage 7.04e+01%,
Percentage 7.08e+01%, Percentage 7.43e+01%, Percentage 7.55e+01%, Percentage 8.00e+01%,
Percentage 8.38e+01%
DOI:10.13227/j.hjkx.201607087
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 11>
Accession number:20171003409530
Title:Characteristics of methane emission from urban traffic in Nanjing
Authors:Zhang, Xue (1, 2); Hu, Ning (1, 2); Liu, Shou-Dong (1, 2); Wang, Shu-Min (1, 2);
Gao, Yun-Qiu (1, 2); Zhao, Jia-Yu (1, 2); Zhang, Zhen (1, 2); Hu, Yong-Bo (1, 2); Lee,
Xu-Hui (1, 2); Zhang, Guo-Jun (1, 2)
Author affiliation:(1) Yale-NUIST Center on Atmospheric Environment, Nanjing University
of Information Science & Technology, Nanjing; 210044, China; (2) Collaborative
Innovation of Center of Atmospheric Environment and Equipment Technology, Nanjing
University of Information Science & Technology, Nanjing; 210044, China
Corresponding author:Liu, Shou-Dong(lsd@nuist.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:469-475
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Urban traffic is an important source of greenhouse gases such as CH<inf>4</inf>.
The observations on CH<inf>4</inf>are the basis for quantitative analysis of urban carbon
emissions. Taken into consideration the weekly and daily changing characteristics of
urban traffic, we conducted experiments to analyze the features of traffic
CH<inf>4</inf>emission and its influential factors. The experiments were conducted on 3
main roads in Nanjing on Oct. 17, 18, 20, 23, 2014 with 5 periods of observation per day,
and in Nanjing Yangtze River tunnel in the morning and at night of Sep.11 2014. The
results showed that: (1)The average concentration of CH<inf>4</inf>on the urban main road
of Nanjing city was greater than that of the background atmosphere. Affected by traffic
conditions, the spatial difference of ΔCH<inf>4</inf>concentration was significant
on three typical main roads. ΔCH<inf>4</inf>concentration's diurnal variation
showed inverted “W” type, and its peak appeared in the morning and evening
rush hours. (2) Due to the “piston wind” in the tunnel, the
CH<inf>4</inf>concentration in Nanjing Yangtze River tunnel gradually increased from the
inlet to the outlet and the difference of concentration between the inlet and the outlet
was 0.21×10<sup>-6</sup>-0.38×10<sup>-6</sup>. (3)There was a good linear
correlation between CH<inf>4</inf>concentration and CO<inf>2</inf>concentration. The
atmospheric ΔCH<inf>4</inf>∶ΔCO<inf>2</inf>value of urban main road in
Nanjing was 0.009 1 and the atmospheric
ΔCH<inf>4</inf>∶ΔCO<inf>2</inf>value of Nanjing Yangtze River Tunnel
was 0.000 47-0.001 4. (4)Traffic volume and the proportion of natural gas vehicles were
the main factors influencing atmospheric ΔCH<inf>4</inf>concentration and
ΔCH<inf>4</inf>∶ΔCO<inf>2</inf>. © 2017, Science Press. All right
reserved.
Number of references:27
Main heading:Transportation
Controlled terms:Carbon - Carbon dioxide - Greenhouse gases - Natural gas - Natural gas
vehicles - Rivers - Roads and streets - Tunnels
Uncontrolled terms:Average concentration - Diurnal variation - Influential factors -
Linear correlation - Main roads - Spatial differences - Traffic conditions - Urban
traffic
Classification code:401.2 Tunnels and Tunneling - 406.2 Roads and Streets - 432
Highway Transportation - 451.1 Air Pollution Sources - 522 Gas Fuels - 804 Chemical
Products Generally - 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201606090
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 12>
Accession number:20171003409558
Title:Concentration, sources and ecological risks of PAHs of different land use types in
Shenfu New City
Authors:Wang, Jing (1, 2); Liu, Ming-Li (1, 2); Zhang, Shi-Chao (1, 2); Lu, Yin-Tao (1,
2); Yao, Hong (1, 2)
Author affiliation:(1) School of Civil Engineering, Beijing Jiaotong University, Beijing;
100044, China; (2) Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water
Quality Safeguard, Beijing; 100044, China
Corresponding author:Yao, Hong(yaohongts@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:703-710
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The concentration level of polycyclic aromatic hydrocarbon (PAHs) in topsoil
from Shenfu New City in urbanization was studied. 54 topsoil samples were collected from
Shenfu New City and 4 different land uses (urban land, rural land, forest land,
cultivated land) were included. The concentration of PAHs in different land uses was
analyzed, the sources of soil PAHs were analyzed by using diagnostic ratios and principal
component analysis, and the ecological risks were calculated using toxic equivalency
concentrations of BaP and the incremental lifetime cancer risk(ILCR)model. Results
indicated that the concentrations of ∑PAHs in urban land, cultivated land, rural land
and forest land were in the range of 184-18 276, 230-14 102, 151-3 205, 303-2 980
μg·kg<sup>-1</sup>, respectively. Four land uses had similar sources, the main
sources were coal combustion and traffic emission. According to the calculation of
ecological risks, there were potential health risks for residents in Shenfu New City,
especially urban land, meanwhile, residents were easily exposed to soil PAHs through
dermal contact. © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Polycyclic aromatic hydrocarbons
Controlled terms:Aromatic compounds - Aromatic hydrocarbons - Coal combustion - Ecology -
Elementary particle sources - Forestry - Health risks - Hydrocarbons - Land use -
Principal component analysis - Risk assessment - Soils
Uncontrolled terms:Concentration levels - Diagnostic ratios - Different land use types -
Ecological risks - Polycyclic aromatic hydrocarbons (PAHS) - Potential health risks -
Toxic equivalency - Traffic emissions
Classification code:403 Urban and Regional Planning and Development - 454.3 Ecology and
Ecosystems - 461.7 Health Care - 483.1 Soils and Soil Mechanics - 521 Fuel Combustion
and Flame Research - 524 Solid Fuels - 804.1 Organic Compounds - 914.1 Accidents and
Accident Prevention - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201607096
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 13>
Accession number:20171003409555
Title:Effects of free ammonia regulation on the performance of high solid anaerobic
digesters with dewatered sludge
Authors:Dai, Xiao-Hu (1); He, Jin (1); Yan, Han (1); Li, Ning (1); Ding, Yue-Ling (1);
Dong, Bin (1); Dai, Ling-Ling (1)
Author affiliation:(1) State Key Laboratory of Pollution Control and Resource Reuse,
College of Environmental Science and Engineering, Tongji University, Shanghai; 200092,
China
Corresponding author:Li, Ning(lining@tongji.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:679-687
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:High free ammonia nitrogen (FAN) is regarded as a main factor that inhibits
biogas production in high solid anaerobic digestion systems with dewatered sludge. Two
mesophilic semi-continuous anaerobic digesters fed with dewatered sludge (input total
solids=15%) were operated and their performance under different FAN concentrations by two
regulation methods including pH reduction and total ammonia nitrogen (TAN) promotion were
investigated. Results showed that when FAN was elevated from (400±174)
mg·L<sup>-1</sup>to (526±25) mg·L<sup>-1</sup>with the increase of
TAN, the daily biogas yield declined from (11.9±0.3) L·d<sup>-1</sup>to
(10.3±0.2) L·d<sup>-1</sup>. Meanwhile, volatile solids (VS) reduction rate
decreased by 33.7%. When FAN dropped from (330±99) mg·L<sup>-1</sup>to
(47±13) mg·L<sup>-1</sup>due to pH reduction, daily biogas yield declined
from (14.4±1.1) L·d<sup>-1</sup>to (10.8±0.3) L·d<sup>-
1</sup>and VS reduction rate decreased by 26.9%. The system performance was not enhanced
with the reduction of FAN. With the stop of pH regulation, FAN gradually raised again to
300 mg·L<sup>-1</sup>and digester performance recovered to the same as the
situation before regulation. The result suggested that inhibition occurred during pH
reduction. By 16S rRNA pyrosequencing analysis on bacterial and archaeal diversity and
quantitative PCR analysis aiming at methanogens, it was found that bacterial community
structure both changed obviously with obvious performance decline in the two digesters.
Excessive FAN (>500 mg·L<sup>-1</sup>) could change the main bacteria species
which degrade protein from Tepidimicrobium and Proteiniborus to Anaerobranca. On the
other hand, some carbohydrate and protein degrading bacteria were also inhibited by pH
reduction for FAN control, leading to the decline of hydrolysis rates of organic matters.
As a result, the shortage of substrate supply for the methanogens weakened the biogas
production of the digestion system. © 2017, Science Press. All right reserved.
Number of references:37
Main heading:Anaerobic digestion
Controlled terms:Ammonia - Bacteria - Biodegradation - Biogas - Dewatering - Digestive
system - Methanogens - Nitrogen - Polymerase chain reaction - Proteins - Pulp digesters
- RNA - Sludge digestion - Substrates
Uncontrolled terms:Ammonia inhibition - Anaerobic digester - Bacterial community
structure - Biogas production - Degrading bacteria - Free ammonia - High-solids - Total
ammonia nitrogens
Classification code:452.2 Sewage Treatment - 461.2 Biological Materials and Tissue
Engineering - 461.9 Biology - 522 Gas Fuels - 801.2 Biochemistry - 802.3 Chemical
Operations - 804 Chemical Products Generally - 811.1.2 Papermaking Equipment
Numerical data indexing:Mass_Density 3.00e-01kg/m3, Percentage 2.69e+01%, Percentage
3.37e+01%
DOI:10.13227/j.hjkx.201607137
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 14>
Accession number:20171003409569
Title:Isolation and identification of a chlorobenzene-degrading bacterium and its
degradation characteristics
Authors:Ye, Jie-Xu (1); Lin, Tong-Hui (1); Luo, Yu-Hao (1); Chen, Dong-Zhi (1); Chen,
Jian-Meng (1)
Author affiliation:(1) College of Environment, Zhejiang University of Technology,
Hangzhou; 310032, China
Corresponding author:Chen, Jian-Meng(jchen@zjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:802-808
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A bacterium strain LW26 which could utilize chlorobenzene (CB) as sole carbon
and energy source was isolated from a biotrickling filter reactor treating CB-
contaminated off-gas. Based on its morphological and physiological characteristics, as
well as the analysis of 16S rRNA gene sequence and Biolog test, the strain LW26 was
identified as Delftia tsuruhatensis. To our best knowledge, it is the first time that the
strain Delftia tsuruhatensis was applied for CB purification. In this study, the effects
of temperature, pH, initial CB concentration and Cl<sup>-</sup>concentration on the
biodegradation were investigated. The results showed that the optimal temperature and pH
for CB biodegradation were 25℃ and 7.0, respectively; the maximum CB tolerated
concentration for LW26 was as high as 500 mg·L<sup>-1</sup>; when the
concentration of Cl<sup>-</sup>was above 0.14 mol·L<sup>-1</sup>, the CB
degradation was significantly restrained. The degrading process of the strain LW26
followed the Haldane kinetic model and the maximum specific growth rate and the maximum
specific degradation rate were 0.42 h<sup>-1</sup>and 2.53 h<sup>-1</sup>,
respectively.GC-MS analysis of the metabolites revealed that CB was firstly converted to
o-chlorophenol by strain LW26. Combined with the activity of catechol dioxygenase, it can
be speculated that CB was finally mineralized to CO<inf>2</inf>, or converted to cell
biomass after processes of ortho cleavage, dechlorination and oxidation. © 2017,
Science Press. All right reserved.
Number of references:26
Main heading:Biodegradation
Controlled terms:Bacteria - Biofilters - Carbon - Carbon dioxide - Dechlorination -
Degradation - Enzyme kinetics - Metabolites - Phenols - RNA - Temperature
Uncontrolled terms:Chlorobenzene - Dechlorination and oxidations - Degradation
characteristics - Delftia tsuruhatensis - Effects of temperature - Isolation and
identification - Maximum specific growth rates - Physiological characteristics
Classification code:461.2 Biological Materials and Tissue Engineering - 461.8
Biotechnology - 641.1 Thermodynamics - 802.2 Chemical Reactions - 804 Chemical
Products Generally
Numerical data indexing:Molar_Concentration 1.40e+02mol/m3
DOI:10.13227/j.hjkx.201607198
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 15>
Accession number:20171003409537
Title:Temporal and spatial variations of dissolved inorganic carbon and its stable
isotopic composition in the surface stream of karst groundwater recharge
Authors:Li, Li (1, 2); Pu, Jun-Bing (1); Li, Jian-Hong (1); Zhang, Tao (1, 2)
Author affiliation:(1) Key Laboratory of Karst Dynamics, Institute of Karst Geology,
Chinese Academy of Geological Sciences, Guilin; 541004, China; (2) School of Geographical
Sciences, Southwest University, Chongqing; 400715, China
Corresponding author:Li, Jian-Hong(jianhongli1988@karst.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:527-534
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Stable carbon isotope of dissolved inorganic carbon
(δ<sup>13</sup>C<inf>DIC</inf>), which is mainly constituted by
HCO<inf>3</inf><sup>-</sup>in karst water, is widely used to trace the different sources
and influential factors of dissolved inorganic carbon (DIC). In order to understand the
distribution of DIC and δ<sup>13</sup>C<inf>DIC</inf>in subtropical karst area,
this paper researched the water chemistry and δ<sup>13</sup>C<inf>DIC</inf>in a
karst surface stream in detail, which is fed by Guancun subterranean stream in Liuzhou
City, Guangxi Province, in the southwest of China. The results showed that the contents
of DIC in subterranean stream outlet (G1 site) ranged from 4.60 to 4.90
mmol·L<sup>-1</sup>with an average of 4.73 mmol·L<sup>-1</sup>in dry
season, and from 2.80 to 4.70 mmol·L<sup>-1</sup>with an average of 4.23
mmol·L<sup>-1</sup>in rainy season. The contents of DIC in 1.35 km downstream site
(G2 site) ranged from 4.30 to 4.90 mmol·L<sup>-1</sup>with an average of 4.56
mmol·L<sup>-1</sup>in dry season, and from 3.00 to 4.70 mmol·L<sup>-
1</sup>with an average of 4.20 mmol·L<sup>-1</sup>in rainy season. The
δ<sup>13</sup>C<inf>DIC</inf>of subterranean stream outlet (G1 site) varied from -
12.8‰ to -11.53‰ with an average of -12.22‰ in dry season, and from
-13.12‰ to -11.01‰ with an average of -12.28‰ in rainy season. The
δ<sup>13</sup>C<inf>DIC</inf>of stream downstream site (G2 site) ranged from -
11.71‰ to -9.55‰ with an average of -10.73‰ in dry season, and
ranged from -12.18‰ to -9.85‰ with an average of -11.10‰ in rainy
season. The contents of DIC of G1 site were higher than those of G2 site. The DIC
contents in dry season in both G1 and G2 site were higher than those in rainy season. The
values of δ<sup>13</sup>C<inf>DIC</inf>of G1 and G2 site in dry season were more
positive than those in rainy season. The δ<sup>13</sup>C<inf>DIC</inf>value of G1
site was more negative than that of G2 site. The main sources of DIC in underground river
and surface stream were soil CO<inf>2</inf>and carbonate dissolution. However, the
differences of DIC and δ<sup>13</sup>C<inf>DIC</inf>between G1 and G2 site showed
that CO<inf>2</inf>degassing and photosynthesis of aquatic plants had significant
influence on water DIC and δ<sup>13</sup>C<inf>DIC</inf>value. This study is
helpful to understand the dynamic change and distribution of DIC and
δ<sup>13</sup>C<inf>DIC</inf>in karst surface stream. © 2017, Science Press.
All right reserved.
Number of references:35
Main heading:Rivers
Controlled terms:Carbon - Carbon dioxide - Dissolution - Drought - Groundwater - Isotopes
- Landforms
Uncontrolled terms:Dissolved inorganic carbon - Guangxi - Influential factors - Karst
surface - Stable carbon isotopes - Stable isotopic compositions - Temporal and spatial
variation - Underground rivers
Classification code:444 Water Resources - 444.2 Groundwater - 481.1 Geology - 802.3
Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Molar_Concentration 2.80e+00mol/m3 to 4.70e+00mol/m3,
Molar_Concentration 3.00e+00mol/m3 to 4.70e+00mol/m3, Molar_Concentration 4.20e+00mol/m3,
Molar_Concentration 4.23e+00mol/m3, Molar_Concentration 4.30e+00mol/m3 to 4.90e+00mol/m3,
Molar_Concentration 4.56e+00mol/m3, Molar_Concentration 4.60e+00mol/m3 to 4.90e+00mol/m3,
Molar_Concentration 4.73e+00mol/m3, Size 1.35e+03m
DOI:10.13227/j.hjkx.201607171
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 16>
Accession number:20171003416434
Title:Influencing mechanism and spatio-temporal pattern of stomatal ozone flux of winter
wheat under ozone pollution
Authors:Zhao, Hui (1, 2); Zheng, You-Fei (1, 2, 3); Cao, Jia-Chen (3); Xu, Jing-Xin (1,
2); Huang, Ji-Qing (1, 2); Yuan, Yue (3)
Author affiliation:(1) Key Laboratory for Aerosol-Cloud-Precipitation of China
Meteorological Administration, Nanjing University of Information Science and Technology,
Nanjing; 210044, China; (2) School of Atmospheric Physics and Environment, Nanjing
University of Information Science & Technology, Nanjing; 210044, China; (3) School of
Environmental Science and Engineering, Nanjing University of Information Science &
Technology, Nanjing; 210044, China
Corresponding author:Zheng, You-Fei(zhengyf@nuist.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:412-422
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:As one of the main atmospheric pollutants over surface layer, researches on the
increasing surface ozone concentration and its impact on main crops have become the focus
of every government and the public. In this paper, based on the observations in Nanjing
using the main local cultivars in China's major winter wheat producing areas, it was
expected to obtain the data including ozone concentration, meteorological data and
stomatal conductance by continuous observation. Stomatal conductance model was used and
parameterized, combined with flux model, we analyzed the characteristics of stomatal flux
in winter wheat under ozone pollution. At the same time, the stomatal conductance and
stomatal ozone absorption flux of winter wheat were simulated in Jiangsu Province. The
main results were as follows: Elevated ozone concentration could reduce stomatal
conductance of winter wheat leaf and stomatal conductance decreased with the increase of
ozone concentration. According to the observational data through the experiment, based on
the boundary line technology, stomatal conductance model was parameterized to simulate
stomatal conductance of wheat leaves from environmental factors. Approximately 90%, 77%
and 83% variation of measured stomatal conductance could be explained by the stomatal
conductance model. In the experiment, the total ozone absorption flux in ozone
concentration of CK(53.67 nL·L<sup>-1</sup>), 100nL·L<sup>-1</sup>,
150nL·L<sup>-1</sup>was 6.42 mmol·m<sup>-2</sup>, 12.27
mmol·m<sup>-2</sup>, 13.90 mmol·m<sup>-2</sup>respectively. The ozone
concentration gradually increased from early period to late period during the period of
winter wheat growth in Jiangsu area. The average stomatal conductance followed the order
of the middle stage>the later stage>the early stage. Winter wheat ozone cumulative
absorption flux was the highest during the middle stage. © 2017, Science Press. All
right reserved.
Number of references:36
Main heading:Air pollution
Controlled terms:Crops - Environmental technology - Meteorology - Ozone - Ozone layer -
Pollution
Uncontrolled terms:Climate - Jiangsu province - Ozone flux - Stomatal - Winter wheat
Classification code:451 Air Pollution - 454 Environmental Engineering - 804 Chemical
Products Generally - 821.4 Agricultural Products
Numerical data indexing:Percentage 7.70e+01%, Percentage 8.30e+01%, Percentage 9.00e+01%
DOI:10.13227/j.hjkx.201607074
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 17>
Accession number:20171003409570
Title:Isolation, identification and metabolic characteristics of a heterotrophic
denitrifying sulfur bacterial strain
Authors:Tan, Wen-Bo (1); Ma, Xiao-Dan (1); Huang, Cong (1); Chen, Chuan (1); Wang, Ai-Jie
(1, 2)
Author affiliation:(1) State Key Laboratory of Urban Water Resource and Environment,
School of Municipal and Environmental Engineering, Harbin Institute of Technology,
Harbin; 150090, China; (2) Key Laboratory of Environmental Biotechnology, Research Center
for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085, China
Corresponding author:Wang, Ai-Jie(ajwang@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:809-814
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Organics, sulfide and nitrogen compounds in industrial wastewater are
significant challenges for wastewater treatment. These pollutants could be removed
simultaneously from wastewater treatment system using biological technologies. In this
study, a heterotrophic denitrifying sulfur bacterial strain HDD1 was isolated from
wastewater treatment bioreactor. Strain HDD1 was identified as Thauera sp. based on the
16S rRNA gene phylogenetic analysis and physiological characteristics. Acetate and
sulfide could be utilized as electron donors and nitrate as electron acceptor for
respiration in Thauera sp. HDD1. The acetate (300 mg·L<sup>-1</sup>), sulfide (200
mg·L<sup>-1</sup>) and nitrate (487 mg·L<sup>-1</sup>) were completely
metabolized and removed within 15 hours. The main product of sulfide oxidation was
elemental sulfur as identified by scanning electron microscope and energy dispersive
spectrometer. These results suggest that the newly isolated Thauera sp. HDD1 could be
used for simultaneous industrial wastewater treatment and elemental sulfur resource
recovery. © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Wastewater treatment
Controlled terms:Biological water treatment - Chemicals removal (water treatment) -
Denitrification - Industrial water treatment - Nitrates - Nitrogen compounds -
Reclamation - RNA - Scanning electron microscopy - Spectrometers - Sulfur - Sulfur
compounds
Uncontrolled terms:Acetate - Elemental sulfur - Energy dispersive spectrometers -
Industrial wastewater treatment - Metabolic characteristics - Physiological
characteristics - Sulfide - Wastewater treatment system
Classification code:445.1 Water Treatment Techniques - 445.1.2 Water Treatment
Techniques for Industrial Use - 452.4 Industrial Wastes Treatment and Disposal - 461.2
Biological Materials and Tissue Engineering - 741.3 Optical Devices and Systems - 802.2
Chemical Reactions - 804 Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 2.00e-01kg/m3, Mass_Density 3.00e-01kg/m3,
Mass_Density 4.87e-01kg/m3, Time 5.40e+04s
DOI:10.13227/j.hjkx.201608034
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 18>
Accession number:20171003416431
Title:Characteristics and evaluation of heavy metal pollution in vegetables in guangzhou
Authors:Chen, Zhi-Liang (1); Huang, Ling (1, 2); Zhou, Cun-Yu (2); Zhong, Song-Xiong (1);
Wang, Xin (1); Dai, Yu (1); Jiang, Xiao-Lu (1)
Author affiliation:(1) South China Institute of Environmental Science, Ministry of
Environmental Protection, Guangzhou; 510655, China; (2) School of Horticulture and
Garden, Yangtze University, Jingzhou; 434025, China
Corresponding author:Zhou, Cun-Yu(zhoucy@yangtzeu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:389-398
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Vegetable is an indispensible component of human daily diet, and contamination
of vegetables by heavy metals directly threatens human health. In this study, 116
vegetable samples were collected from 12 administrative districts of Guangzhou City for
analysis of six heavy metals, Cu, Zn, Pb, Cd, Ni, Cr. A combination of single factor
evaluation and Nemero Index analysis was employed to determine specific heavy metals
exceeding allowable standards and analyze the characteristics of pollution. Risk of
exposure was utilized to assess human health risks originating from eating locally
planted vegetables contaminated by heavy metals. The results showed that contents of Cu,
Zn in the 8 sorts of vegetables were below the standards of maximum allowable content and
the contents of heavy mental Cr of up to 91.67% vegetable samples were higher than their
standard. Lettuce sativa var. angustana Irish, Luffa acutangula L., Lycopersicon
esculentum Mill. and Daucus carota L. were the 4 species of Pb exceeding vegetables, with
the exceed ratio reaching up to 35.71% and Daucus carota L. exceeded the target value
most seriously. Only the content of Cd in Lycopersicon esculentum Mill. was over-
standard,with the rate of 31.25%. And the highest rate of over-standard of the content of
Ni in 3 species of vegetables, which included Lactuca sativa L., Ipomoea aquatica Forsk
and Brassica parachinensis, reached 8.33%. For the contamination level of the eight kinds
of vegetable, Lactuca sativa L., Ipomoea aquatica Forsk, Brassica parachinensis, Raphanus
sativus L. and Daucus carota L. were put into the class of alarming, while Lettuce sativa
var. angustana Irish, Luffa acutangula L. and Lycopersicon esculentum Mill. were
classified as secure. Heavy metals' comprehensive pollution degree of 4 species of
vegetables presented a trend of leafy vegetables>rootstalk vegetables>stem
vegetables>solanaceous fruits. Health risk assessment showed that Guangzhou citizens
eat more frequently Ipomoea aquatica Forsk and Lactuca sativa L. and Brassica
parachinensis were prone to higher accumulation of heavy metals, and the dietary intake
of heavy metal Cr might cause harm to human health and intake of Cd would bring potential
health risk to the human body. Risk of exposure to heavy metal through oral ingestion of
vegetables was proved to be higher for children than adults. © 2017, Science Press.
All right reserved.
Number of references:29
Main heading:Copper
Controlled terms:Cadmium - Chemical contamination - Fruits - Health - Health risks -
Heavy metals - Lead - Metal analysis - Nickel - Pollution - Risk assessment - Value
engineering - Vegetables - Zinc
Uncontrolled terms:Characteristics of pollution - Contamination levels - Guangzhou -
Health evaluation - Heavy metal pollution - Lycopersicon esculentum Mill - Potential
health risks - Single factor evaluation
Classification code:461.6 Medicine and Pharmacology - 461.7 Health Care - 531
Metallurgy and Metallography - 544.1 Copper - 546.1 Lead and Alloys - 546.3 Zinc and
Alloys - 548.1 Nickel - 549.3 Nonferrous Metals and Alloys excluding Alkali and
Alkaline Earth Metals - 821.4 Agricultural Products - 822.3 Food Products - 911.5
Value Engineering - 914.1 Accidents and Accident Prevention
Numerical data indexing:Percentage 3.12e+01%, Percentage 3.57e+01%, Percentage 8.33e+00%,
Percentage 9.17e+01%
DOI:10.13227/j.hjkx.201606138
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 19>
Accession number:20171003416387
Title:Interactive effects of the influencing factors on the changes of
PM<inf>2.5</inf>concentration based on gam model
Authors:He, Xiang (1, 2, 3, 4, 5); Lin, Zhen-Shan (1, 3, 4, 5)
Author affiliation:(1) College of Geography Science, Nanjing Normal University, Nanjing;
210023, China; (2) Institute of Tourism, Kaili University, Kaili; 556011, China; (3)
Jiangsu Center for Collaborative Innovation in Geographical Information Resource
Development and Application, Nanjing; 210023, China; (4) State Key Laboratory Cultivation
Base of Geographical Environment Evolution, Nanjing; Jiangsu Province; 210023, China; (5)
Key Laboratory of Virtual Geographic Environment, Nanjing Normal University, Ministry of
Education, Nanjing; 210023, China
Corresponding author:Lin, Zhen-Shan(linzhenshan@njnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:22-32
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this paper, the generalized additive model (GAM) was introduced to analyze
the interactive effects of the influencing factors on the change of
PM<inf>2.5</inf>concentration during 2013-2015 in Nanjing city. The results showed as
follows: PM<inf>2.5</inf>and its influencing factors appeared to follow normal
distribution. There were strong correlations among the influencing factors, especially
among the temperature(TEM), pressure(PRS) and water vapor pressure(VAP). For the single
influencing factor GAM models of PM<inf>2.5</inf>concentration, all influencing factors
passed the significance test. Moreover, the equation fitting degrees of SO<inf>2</inf>,
CO, and NO<inf>2</inf>were much higher. In the multiple influencing factors GAM models of
PM<inf>2.5</inf>concentration, the contribution of the SO<inf>2</inf>, CO,
NO<inf>2</inf>, O<inf>3</inf>, precipitation (PRE), wind and relative humidity(RHU) to
the change of PM<inf>2.5</inf>concentration was 73.9% with significant impacts on the
change of PM<inf>2.5</inf>concentration. Based on the diagnostic analysis of the effect
of multi factors on the change of PM<inf>2.5</inf>concentration, there were linear
relationship between PM<inf>2.5</inf>and SO<inf>2</inf>, NO<inf>2</inf>and wind, and
non-linear relationship between PM<inf>2.5</inf>and CO, O<inf>3</inf>, PRE and RHU. The
GAM models, which considered the interaction of SO<inf>2</inf>respectively with CO, PRE
and RHU, the interaction of CO respectively with NO<inf>2</inf>, O<inf>3</inf>, PRE, Wind
and RHU, and the interaction of NO<inf>2</inf>respectively with Wind, PRE and RHU, all
passed the significance test(P<0.01 or P<0.05). The interaction of SO<inf>2</inf>,
CO and NO<inf>2</inf>respectively with other factors such as meteorological factors had
the most important influence on the change of PM<inf>2.5</inf>concentration. At last,
through the visualized three-dimensional map of the GAM models considering the
interaction of the influencing factors on the PM<inf>2.5</inf>concentration, the
interactive effects of the influencing factors on PM<inf>2.5</inf>concentration were
quantitatively modeled. Our results demonstrated that GAM could be used to quantitatively
analyze the interactive effect of the influencing factors on the change of
PM<inf>2.5</inf>concentration. Therefore, the research method is innovative and important
for PM<inf>2.5</inf>pollution and control. © 2017, Science Press. All right
reserved.
Number of references:33
Main heading:Nitrogen oxides
Controlled terms:Normal distribution - Pollution control - Sulfur dioxide
Uncontrolled terms:Generalized additive model - Influencing factors - Interaction -
Linear relationships - Meteorological factors - Nanjing cities - Non-linear relationships
- Three-dimensional maps
Classification code:804.2 Inorganic Compounds - 922.1 Probability Theory
Numerical data indexing:Percentage 7.39e+01%
DOI:10.13227/j.hjkx.201606061
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 20>
Accession number:20172603860986
Title:Degradation of the Disperse Dye Neocron Black(NB) by Biological Treatment
Authors:Yang, Bo (1, 2); Ding, Feng-You (1, 2); Xu, Hui (1, 2); Li, Fang (1, 2); Tian,
Qing (1, 2); Ma, Chun-Yan (1, 2)
Author affiliation:(1) State Environmental Protection Engineering Center for Pollution
Treatment and Control in Textile Industry, Shanghai; 201620, China; (2) College of
Environmental Science and Engineering, Donghua University, Shanghai; 201620, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1520-1528
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The biodegradation characteristics of the azo disperse dye neocron black (NB)
were investigated under aerobic, anaerobic and anaerobic/aerobic conditions separately
with the activated sludge system, and the biological degradation process of the dye was
analyzed by spectrophotometry and gas chromatography mass spectrometry (GC-MS). The
results showed that the degradation efficiency of NB dye was the highest under fully
aerobic conditions, followed by the anaerobic/aerobic conditions, and fully anaerobic
condition was the lowest. With the increase of the concentration of NB dye, the dye and
the intermediate metabolite greatly decreased the microbial degradation efficiency of NB
dye. The addition of carbon source could not only promote the biodegradation of NB dye,
but also change the kinetic characteristics of the biodegradation process. The
spectrophotometry and GC-MS determination results showed that the chromophore was
completely degraded after biodegradation of NB dye. The intermediates metabolites of NB
dye included 2,4-Dinitroaniline, 2-cyano-4-nitro aniline, p-Nitroaniline etc. ©
2017, Science Press. All right reserved.
Number of references:29
Main heading:Biodegradation
Controlled terms:Activated sludge process - Aniline - Carbon - Chromophores - Degradation
- Efficiency - Gas chromatography - Mass spectrometry - Metabolites - Spectrophotometry
Uncontrolled terms:Aerobic - Alternating aerobic/anaerobic condition - Anaerobic -
Disperse dyes - Neocron black (NB)
Classification code:452.2 Sewage Treatment - 801 Chemistry - 801.2 Biochemistry -
802.2 Chemical Reactions - 802.3 Chemical Operations - 804 Chemical Products Generally
- 804.1 Organic Compounds - 913.1 Production Engineering - 941 Acoustical and Optical
Measuring Instruments
DOI:10.13227/j.hjkx.201603007
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 21>
Accession number:20172603860978
Title:Identification and PAC Adsorption of Foulants Responsible for Irreversible Fouling
During Ultrafiltration of Dongjiang River Water
Authors:Yang, Hai-Yan (1, 2); Wang, Can (3); Yan, Zhong-Sen (2); Li, Dong-Ping (1); Zhao,
Yan (1); Qu, Fang-Shu (2); Liang, Heng (2); Xu, Ye-Qin (1); Li, Gui-Bai (2)
Author affiliation:(1) Guangdong GDH Water Co., Ltd., Shenzhen; 518021, China; (2) School
of Environmental and Municipal Engineering, Harbin Institute of Technology, Harbin;
150090, China; (3) School of Environmental and Municipal Engineering, Qingdao University
of Technology, Qingdao; 266033, China
Corresponding author:Li, Gui-Bai(liguibai@vip.163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1460-1466
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Foulants responsible for hydraulic irreversible fouling in Dongjiang River water
were identified by ultrafiltration process and their removal by powdered activated carbon
(PAC) adsorption treatment was investigated using fluorescent excitation emission matrix
and parallel factor analysis (EEM-PARAFAC). A correlation analysis was then carried out
for samples between the maximum fluorescence intensities (F<inf>max</inf>) of three
PARAFAC components after PAC adsorption and the surface properties of corresponding PAC
samples. The results showed that two humic-like (C1 and C3) and one tryptophan-like
fluorescent components were obtained through PARAFAC analysis, in which tryptophan-like
component C2 was found to be the main substance in hydraulic irreversible foulants
extracted from fouled membrane. Furthermore, the results of correlation analysis
suggested that microspore area of PAC correlated with PAC adsorption of tryptophan-like
fluorescent components, which played an important role in irreversible fouling. Both BET
and mesopore+macropore area of PAC correlated with its adsorption of humic-like
fluorescent components. The result provided support for selecting PAC in PAC-
ultrafiltration hybrid process, which would be more effective for fouling control. ©
2017, Science Press. All right reserved.
Number of references:25
Main heading:Factor analysis
Controlled terms:Activated carbon - Activated carbon treatment - Adsorption - Amino acids
- Biological materials - Correlation methods - Fluorescence - Fouling - Multivariant
analysis - Ultrafiltration - Water resources
Uncontrolled terms:Correlation analysis - Excitation emission matrices - Fluorescence
intensities - Foulants - Natural organic matters - Parallel factor analysis - Powdered
activated carbon - Ultrafiltration process
Classification code:444 Water Resources - 461.2 Biological Materials and Tissue
Engineering - 741.1 Light/Optics - 802.3 Chemical Operations - 804 Chemical Products
Generally - 804.1 Organic Compounds - 922 Statistical Methods - 922.2 Mathematical
Statistics
DOI:10.13227/j.hjkx.201609013
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 22>
Accession number:20172603860967
Title:Water Quality Analysis of Beijing Segment of South-to-North Water Diversion Middle
Route Project
Authors:Xu, Hua-Shan (1); Zhao, Lei (1); Sun, Hao-Su (1); Ren, Yu-Fen (2); Ding, Tao (1);
Chang, Shuai (1); Wang, Hai-Dong (1); Li, Miao (1); Guo, Zhao (1)
Author affiliation:(1) Daning Management Office of the Beijing South-to-North Water
Diversion, Beijing; 102442, China; (2) State Key Laboratory of Urban and Regional
Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences,
Beijing; 100085, China
Corresponding author:Ren, Yu-Fen(yfren@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1357-1365
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Water quality is the key problem that water management departments concern.
Water quality of Beijing segment of South-to-North Water Diversion Middle Route Project
is closely related to water security and social stability in Beijing. Since the
connection of Beijing part in Middle Route of South-to-North Diversion Project, water
quality data of Daning regulation and storage reservoir and Daning surge tank was
collected, and water quality indexes including water temperature, total nitrogen, nitrate
nitrogen, chloride ion, sulfate, dissolved oxygen, permanganate index, pH, ammonia
nitrogen, fluorine ion and total phosphorus, were monitored monthly. With variance
analysis, water quality difference among different water sources of the South-to-North
Water Diversion of Middle Route was analyzed. With factor analysis method, the water
quality risk factors of Daning regulation and storage reservoir and Daning surge tank
were identified. The results were as following, water from Hebei province had higher
contents of nitrate nitrogen, total nitrogen, fluorine ion, chloride ion and sulfate than
those of water from Danjiangkou reservoir, but the water quality was not as good as that
from Danjiangkou reservoir. LSD difference test results showed that the dissolved oxygen,
nitrate nitrogen and total nitrogen of the water from Hebei province had significant
differences (P<0.05) between flood season and non-flood season, there was significant
difference (P<0.05) in pH of water from Danjiangkou reservoir between flood season and
non-flood season, and the water quality of Danjiangkou reservoir was more stable than
water from Heibei province. No matter in flood season or non-flood season, there were no
significant differences (P<0.05) in pH, dissolved oxygen, permanganate index, total
phosphorus and ammonia nitrogen between the water from Danjiangkou reservoir and Heibei
province, but there were significant differences (P<0.05) in nitrate nitrogen, total
nitrogen, fluorine ion and sulfate ion and chloride ion. Contents of Nitrate nitrogen,
total nitrogen, sulfate and chloride ion in 2015 (the mixture of water from Hebei
province and Danjiangkou reservoir) in Daning regulation and storage reservoir were lower
than those in 2012-2014 (water from Hebei province), and the water from Danjiangkou
reservoir played a key role in dilution and adjustment of the water from Hebei province
in Daning regulation and storage reservoir. The water quality differences test results
between 2012-2014 and 2015 showed that there were significant differences (P<0.05) in
the nitrate nitrogen, total nitrogen, fluorine ion, sulfate and chloride ion both in
flood season and non-flood season, and the water quality of 2015 was better than that of
2012~2014 in non-flood season, but the differences of pH, dissolved oxygen, permanganate
index, total phosphorus, ammonia nitrogen were not obvious (P<0.05). The difference
test results between Daning regulation and storage reservoir and Daning surge tank showed
that Permanganate index, total nitrogen, fluorine ion, sulfate and chloride ion had
significant differences (P<0.05) both in flood season and non-flood season, and the
contents of permanganate index, fluorine ion, sulfate and chloride ions in Daning
regulation and storage reservoir were higher than those in Daning surge tank. The factor
analysis results indicated that water quality potential risk factors both in Daning
regulation and storage reservoir and Daning surge tank were mainly nitrogen, including
ammonia nitrogen, nitrate nitrogen and total nitrogen, and potential risk factors also
included total phosphorus in Daning regulation and storage reservoir. © 2017,
Science Press. All right reserved.
Number of references:25
Main heading:Reservoirs (water)
Controlled terms:Ammonia - Biochemical oxygen demand - Chlorine compounds - Digital
storage - Dissolution - Dissolved oxygen - Factor analysis - Flood control - Floods -
Fluorine - Ions - Multivariant analysis - Nitrates - Nitrogen - Oxygen - Phosphorus -
Quality control - Risk assessment - Sulfur compounds - Surge tanks - Tanks (containers)
- Water management - Water quality
Uncontrolled terms:Danjiangkou reservoir - Factor analysis method - South to North water
diversion - Storage reservoirs - Water quality analysis - Water quality data - Water
quality indexes - Water temperatures
Classification code:441.2 Reservoirs - 445.2 Water Analysis - 619.2 Tanks - 722.1
Data Storage, Equipment and Techniques - 802.3 Chemical Operations - 804 Chemical
Products Generally - 804.2 Inorganic Compounds - 913.3 Quality Assurance and Control -
914.1 Accidents and Accident Prevention - 922 Statistical Methods - 922.2 Mathematical
Statistics
DOI:10.13227/j.hjkx.201607068
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 23>
Accession number:20172603860959
Title:Dry and Bulk Nitrogen Deposition in Suburbs of Xining City
Authors:Xu, Wen (1, 2); Jin, Xin (3); Luo, Shao-Hui (3); Feng, Zhao-Zhong (2); Zhang, Lin
(4); Pan, Yue-Peng (5); Liu, Xue-Jun (1)
Author affiliation:(1) College of Resources and Environmental Sciences, China
Agricultural University, Beijing; 100193, China; (2) State Key Laboratory of Urban and
Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of
Sciences, Beijing; 100085, China; (3) Bureau of Qinghai Meteorology, Xining; 810001,
China; (4) Department of Atmospheric and Oceanic Sciences, School of Physics, Peking
University, Beijing; 100871, China; (5) State Key Laboratory of Atmospheric Boundary
Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese
Academy of Sciences, Beijing; 100029, China
Corresponding author:Liu, Xue-Jun(liu310@cau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1279-1288
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study conducted a full two-year (2014 and 2015) measurements of dry and
bulk deposition of atmospheric inorganic nitrogen (N) at the suburb of Xining city,
Qinghai province. Dry N deposition fluxes were calculated by multiplying the atmospheric
concentrations of NH<inf>3</inf>and NO<inf>2</inf>measured using passive samplers with
the modeled dry deposition velocities provided by the GEOS-Chem global chemical transport
model, while bulk N deposition fluxes were measured using precipitation gauge. Annual
mean concentrations of gaseous NH<inf>3</inf>and NO<inf>2</inf>averaged 8.8 and 19.6
μg·m<sup>-3</sup>, respectively, with significantly higher values in 2015 than
in 2014. Seasonal mean NH<inf>3</inf>concentrations were higher in spring and summer than
in autumn and winter, but the concentrations of NO<inf>2</inf>changed little from season
to season, with a small peak in autumn. Annual mean concentrations of
NH<inf>4</inf><sup>+</sup>-N and NO<inf>3</inf><sup>-</sup>-N in precipitation averaged
2.2 and 1.8 mg·L<sup>-1</sup>, respectively. Concentrations of
NH<inf>4</inf><sup>+</sup>-N in autumn were~55% lower than those in other seasons,
whereas those of NO<inf>3</inf><sup>-</sup>-N in autumn or winter were~26% higher than
those in spring and summer. Dry deposition of NH<inf>3</inf>and NO<inf>2</inf>was 9.0 and
2.8 kg·(hm<sup>2</sup>·a)<sup>-1</sup>, respectively. Bulk deposition of
NH<inf>4</inf><sup>+</sup>-N and NO<inf>3</inf><sup>-</sup>-N in precipitation was 7.6
and 6.2 kg·(hm<sup>2</sup>·a)<sup>-1</sup>, respectively. Reduced N
(gaseous NH<inf>3</inf>and NH<inf>4</inf><sup>+</sup>-N in precipitation) was the
dominant form of N deposition. The total dry and wet N deposition was 25.6 kg·
(hm<sup>2</sup>·a)<sup>-1</sup>, which represented significant nutrient input from
the environment to the suburban farmland, but this amount of deposited N exceeded the
critical loads [10-20 kg·(hm<sup>2</sup>·a)<sup>-1</sup>] of terrestrial
ecosystems, suggesting a risk of “N saturation” in the local natural
environment. © 2017, Science Press. All right reserved.
Number of references:41
Main heading:Nitrogen oxides
Controlled terms:Atmospheric chemistry - Atmospheric movements - Meteorological
instruments - Nitrogen - Nitrogen compounds
Uncontrolled terms:Atmospheric concentration - Chemical transport models - Dry deposition
- Dry deposition velocities - Suburban areas - Terrestrial ecosystems - Tibetan Plateau -
Wet deposition
Classification code:443.1 Atmospheric Properties - 443.2 Meteorological Instrumentation
- 804 Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 1.80e-03kg/m3, Mass_Density 2.20e-03kg/m3
DOI:10.13227/j.hjkx.201609237
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 24>
Accession number:20172603860988
Title:Short-cut Nitrification Recovery and Its Transformation into CANON Process in a
Biofilm Reactor
Authors:Fu, Kun-Ming (1); Zhou, Hou-Tian (1); Su, Xue-Ying (1); Wang, Hui-Fang (1)
Author affiliation:(1) Key Laboratory of Urban Storm Water System and Water Environment,
School of Environment and Energy Engineering, Beijing University of Civil Engineering and
Architecture, Beijing; 100044, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1536-1543
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A short-cut nitrification process with modified polyethylene as carrier was
operated to investigate the biofilm short-cut nitrification recovery using synthetic
inorganic ammonia-rich wastewater as influent at 30℃ ±1℃. The short-
cut nitrification was destroyed first by excessive aeration, and it was not built in 83
days under the condition of continuous aeration with DO less than 0.5 mg·L<sup>-
1</sup>and free ammonia (FA) more than 1.5 mg·L<sup>-1</sup>, which are very
beneficial to short-cut nitrification. However, short-cut nitrification was realized by
changing continuous aeration to intermittent aeration on 84<sup>th</sup>day, and it was
proved again on 142nd day. After that, biofilm system provided a living environment for
ANAMMOX bacteria, anaerobic ammonia oxidation occurred, and the biofilm short-cut
nitrification process was gradually transformed into CANON process. As the load of
influent and aeration increased, the total nitrogen removal efficiency and removal load
increased, and the total nitrogen removal load could reach up to 2.52 kg·
(m<sup>3</sup>·d)<sup>-1</sup>. Finally, in the 3rd stage,
ΔNO<inf>3</inf><sup>-</sup>-N/ΔTN was 0.10 on average, which means stabe
short-cut nitrification in the CANON process. Therefore, once NOB was adapted to FA, it
would be not very easy to recover short-cut nitrification, while intermittent aeration
was an effective way, and the nitriation process would be finally transformed into CANON
process, which would further improve the short-cut nitrification stability. © 2017,
Science Press. All right reserved.
Number of references:31
Main heading:Nitrification
Controlled terms:Ammonia - Biofilms - Nitration - Nitrogen - Nitrogen removal - Recovery
- Wastewater treatment
Uncontrolled terms:Anaerobic ammonium oxidation - Excessive aeration - Free ammonia -
Intermittent aeration - Living environment - Nitrification process - Nitrite accumulation
- Total nitrogen removal
Classification code:452.4 Industrial Wastes Treatment and Disposal - 462.5 Biomaterials
(including synthetics) - 802.2 Chemical Reactions - 804 Chemical Products Generally -
804.2 Inorganic Compounds
Numerical data indexing:Age 2.27e-01yr, Mass_Density 1.50e-03kg/m3, Mass_Density 5.00e-
04kg/m3
DOI:10.13227/j.hjkx.201609233
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 25>
Accession number:20172603860979
Title:Efficiency and Kinetics of Triclosan Degradation in Aqueous Solution by UV/Sodium
Persulfate
Authors:Li, Qing-Song (1); Li, Xue-Yan (2); Yao, Ning-Bo (1, 2); Luo, Jing-Yu (1, 2); Li,
Guo-Xin (1); Chen, Guo-Yuan (1); Gao, Nai-Yun (3)
Author affiliation:(1) Water Resources and Environmental Institute, Xiamen University of
Technology, Xiamen; 361024, China; (2) School of Environmental Science and Engineering,
Suzhou University of Science and Technology, Suzhou; 215009, China; (3) National Key
Laboratory of Pollution Control and Reuse, Tongji University, Shanghai; 200092, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1467-1476
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:UV activated sodium persulfate was employed to remove triclosan (TCS) in aqueous
solution. The effects of several factors such as UV wavelength,
UV<inf>254</inf>intensity, sodium persulfate dosage, pH value, and HA on TCS degradation
were investigated. The second-order rate constants of free radicals (·OH,
SO<inf>4</inf><sup>·-</sup>) reacting with TCS and their contributions to TCS
removal were determined, respectively. The dominant free radical was also identified.
Furthermore, the TCS degradation efficiency in natural water by UV<inf>254</inf>/SPS and
UV<inf>254</inf>/H<inf>2</inf>O<inf>2</inf>was compared. Finally, the possible pathway
and intermediate products of TCS degradation were analyzed with GC/MS. The results
indicated that UV<inf>254</inf>activated sodium persulfate could effectively remove TCS.
The removal rate of TCS could reach 98.15% within 100s under the conditions of UV
wavelength of 254 nm,UV intensity of 11.5μW·cm<sup>-2</sup>,sodium persulfate
dosage of 1mmol·L<sup>-1</sup>,and TCS initial concentration of 275
μg·L<sup>-1</sup>. TCS degradation followed the pseudo-first-order kinetic
model and the pseudo-first-order rate constant was determined to be 0.039 2 s<sup>-
1</sup>. Pseudo-first-order rate constant for TCS degradation increased with the increase
of UV<inf>254</inf>intensity(I)and sodium persulfate dosage within experiment ranges. The
effect of UV wavelength on TCS removal was not notable. Neutral condition was detrimental
to TCS degradation. TCS removal was inhibited in the presence of HA. The reaction rate
constants for ·OH and SO<inf>4</inf><sup>·-</sup>reacting with TCS were
7.62×10<sup>9</sup>L·mol<sup>-1</sup>·s<sup>-1</sup>and
9.86×10<sup>9</sup>L·mol<sup>-1</sup>·s<sup>-1</sup>,respectively.
SO<inf>4</inf><sup>·-</sup>was the dominant free radical and its contribution rate
to TCS removal was 97.63% in UV<inf>254</inf>/SPS system. The K value of
UV<inf>254</inf>/SPS was 4.13 times higher than that of
UV<inf>254</inf>/H<inf>2</inf>O<inf>2</inf>process,which demonstrated that
UV<inf>254</inf>/SPS process could remove TCS more effectively than
UV<inf>254</inf>/H<inf>2</inf>O<inf>2</inf>. The main intermediate products found were
2,4-DCP and phenol in the degradation process of TCS in Milli-Q water by
UV<inf>254</inf>/SPS. © 2017, Science Press. All right reserved.
Number of references:36
Main heading:Rate constants
Controlled terms:Biodegradation - Chemical analysis - Chromatographic analysis -
Degradation - Efficiency - Enzyme kinetics - Free radicals - Kinetics - Sodium -
Solutions
Uncontrolled terms:Degradation efficiency - Initial concentration - Intermediates -
Pseudo first order rate constants - Pseudo-first order kinetic model - Second-order rate
constants - Sodium persulfate - Triclosan
Classification code:461.8 Biotechnology - 549.1 Alkali Metals - 802.2 Chemical
Reactions - 913.1 Production Engineering - 931 Classical Physics; Quantum Theory;
Relativity
Numerical data indexing:Mass_Density 2.75e-04kg/m3, Molar_Concentration 1.00e+00mol/m3,
Percentage 9.76e+01%, Percentage 9.82e+01%, Size 2.54e-07m, Surface_Power_Density 1.15e-
01W/m2, Time 1.00e+02s
DOI:10.13227/j.hjkx.201609211
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 26>
Accession number:20172603860984
Title:Removal of Estrogenic Effect by Typical Domestic Wastewater Treatment Processes
Authors:Zhang, Qiu-Ya (1); Ma, Xiao-Yan (1); Wang, Xiao-Chang (1); You, Meng (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Corresponding author:Wang, Xiao-Chang(xcwang@xauat.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1506-1512
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Targeting at the characteristics of low concentration but high risk of endocrine
disrupting compounds in the aquatic environment, the current study investigated the
distribution of estrogenicity and E2 level using recombinant yeast estrogen screen (YES)
and enzyme linked immunosorbent assay (ELSIA) during domestic wastewater treatment
processes. The results showed that the levels of estrogenicity and E2 in influents of
wastewater treatment plants were 4.35-7.58 ng·L<sup>-1</sup>and 36.95-83.43
ng·L<sup>-1</sup>, respectively. It was found that biological treatment processes
played a crucial role in the removal of estrogenicity and E2, such as oxidation ditch,
A<sup>2</sup>/O and A<sup>2</sup>/O followed by MBR, where the removal of estrogenicity
and E2 was 71.10%-75.54% and 75.88%-80.72%, respectively. The activated sludge, with an
estrogencity level of 1.84-2.43 ng·g<sup>-1</sup>and an E2 level of 8.45-12.84
ng·g<sup>-1</sup>, had the function of eliminating estrogenic effect to a certain
extent by adsorption. The estrogenic activity in the effluent of domestic wastewater was
1.06-2.19 ng·L<sup>-1</sup>, which will pose potential risk to the aquatic life in
the environment. Last but not least, ELISA had a good correlation with YES assay, which
provides a new method for rapid screening and assessment of water environmental estrogen.
© 2017, Science Press. All right reserved.
Number of references:28
Main heading:Wastewater treatment
Controlled terms:Activated sludge process - Effluents - Endocrinology - Enzymes -
Reclamation - Removal - Sewage lagoons - Sewage treatment plants - Wastewater - Yeast
Uncontrolled terms:Biological treatment process - Domestic waste water treatment -
Endocrine disrupting compound - Environmental estrogens - Enzyme linked immunosorbent
assay - Estrogenicity - Wastewater treatment plants - Yeast estrogen screen
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal -
461.6 Medicine and Pharmacology - 822.3 Food Products
Numerical data indexing:Mass_Density 1.06e-09kg/m3 to 2.19e-09kg/m3, Mass_Density 3.70e-
08kg/m3 to 8.34e-08kg/m3, Mass_Density 4.35e-09kg/m3 to 7.58e-09kg/m3, Percentage 7.11e
+01% to 7.55e+01%, Percentage 7.59e+01% to 8.07e+01%
DOI:10.13227/j.hjkx.201607232
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 27>
Accession number:20172603861004
Title:Alleviation Effects of Exogenous Melatonin on Ni Toxicity in Rice Seedings
Authors:Liu, Shi-Xiang (1, 2); Huang, Yi-Zong (1); Luo, Ze-Jiao (2); Huang, Yong-Chun
(1); Jiang, Hang (1)
Author affiliation:(1) Agro-Environmental Protection Institute, Ministry of Agriculture,
Tianjin; 300191, China; (2) School of Environmental Studies, China University of
Geosciences, Wuhan; 430074, China
Corresponding author:Huang, Yi-Zong(yizonghuang@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1675-1682
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The alleviation effect of exogenous melatonin (MT) on Ni toxicity in rice
seedings was investigated. The results showed that low concentration of Ni stress (10, 50
μmol·L<sup>-1</sup>) had little effect on the growth of root of rice seedings,
while higher concentration of Ni stress (100-1 000 μmol·L<sup>-1</sup>)
significantly inhibited the growth of rice root. Compared with the control treatment, the
addition of 100 and 1 000 μmol·L<sup>-1</sup>Ni would decrease the total length
and surface area of root by 63.3%-98.0% and 56.9%-96.3%, respectively. The results showed
that addition of exogenous melatonin had a positive effect on the growth of rice seedings
under Ni stress. This kind of positive effect was even more obvious in the root of rice
seedings. The total length of rice root decreased by 58.4%-83.8% at Ni concentration of
100 μmol·L<sup>-1</sup>, whereas it decreased by only 8.7%-29.1% when 100
μmol·L<sup>-1</sup>Ni and 10 μmol·L<sup>-1</sup>MT were added,
compared with the control treatment. The addition of exogenous melatonin had significant
alleviation effects on oxidative stress in rice seedings caused by Ni. Compared with the
100 μmol·L<sup>-1</sup>Ni treatment, addition of 10 μmol·L<sup>-
1</sup>exogenous MT could significantly decrease the production rate of
O<inf>2</inf><sup>-·</sup>by 43.2%-50.2% and the relative electrolytic leakage by
25.7%-31.6%, whereas increase the activities of CAT by 21.9%-33.7% and the soluble
protein content by 82.6%-84.6%. The results suggested that application of exogenous
melatonin could effectively alleviate the toxic effects of Ni on rice seedings. ©
2017, Science Press. All right reserved.
Number of references:24
Main heading:Nickel
Controlled terms:Hormones - Toxicity
Uncontrolled terms:Alleviation effect - Antioxidant systems - Control treatments - Low
concentrations - Melatonin(MT) - Production rates - Rice - Soluble proteins
Classification code:461.2 Biological Materials and Tissue Engineering - 461.7 Health
Care - 548.1 Nickel
Numerical data indexing:Molar_Concentration 1.00e-01mol/m3 to 1.00e+00mol/m3,
Molar_Concentration 1.00e-01mol/m3, Molar_Concentration 1.00e-02mol/m3,
Molar_Concentration 5.00e-02mol/m3, Percentage 2.19e+01% to 3.37e+01%, Percentage 2.57e
+01% to 3.16e+01%, Percentage 4.32e+01% to 5.02e+01%, Percentage 5.69e+01% to 9.63e+01%,
Percentage 5.84e+01% to 8.38e+01%, Percentage 6.33e+01% to 9.80e+01%, Percentage 8.26e
+01% to 8.46e+01%, Percentage 8.70e+00% to 2.91e+01%
DOI:10.13227/j.hjkx.201609139
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 28>
Accession number:20171003416415
Title:Mechanism for effects of high free ammonia loadings on biological nitrification
Authors:Ji, Min (1); Liu, Ling-Jie (1); Zhai, Hong-Yan (1); Liu, Jing (1); Su, Xiao (1)
Author affiliation:(1) School of Environmental Science and Engineering, Tianjin
University, Tianjin; 300350, China
Corresponding author:Zhai, Hong-Yan(zhaihy@tju.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:260-268
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Wastewater treatment plants treating industrial wastewater and municipal
wastewater may suffer from unexpected shock loads of high ammonia concentrations, which
can lead to inhibition of biological nitrification and failure to meet the wastewater
discharge standards. In order to solve the problem of failure to meet the standards, the
effects of high loadings of free ammonia (FA) on the nitrification process were
investigated in this work using a sequencing batch reactor (SBR). For such purpose,
maximum specific degradation rates of ammonia, maximum specific formation rates of
nitrate, specific oxygen uptake rates and abundances of nitrifying bacteria were
monitored. The results showed that FA promoted nitrification activities at low
concentrations and inhibited the activities when the FA concentration exceeded a certain
value. In addition, high loading concentrations of FA resulted in long recovery times.
When the FA concentration increased from 3.6 mg·L<sup>-1</sup>to 8.1
mg·L<sup>-1</sup>, the abundances of ammonia-oxidizing bacteria (AOB) and
nitrite-oxidizing bacteria (NOB) increased slightly, as shown by the fluorescence in situ
hybridization tests. However, there were apparent decreases in the abundances of AOB and
NOB when the concentration of FA was higher than 8.1 mg·L<sup>-1</sup>. The
critical FA inhibitory concentrations for AOB and NOB were 8.1 mg·L<sup>-
1</sup>and 6.6 mg·L<sup>-1</sup>. It was found that the NOB flora were more
sensitive than AOB to FA inhibition. © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Bacteria
Controlled terms:Ammonia - Batch reactors - Biodegradation - Biological water treatment -
Degradation - Enzyme inhibition - Fluorescence microscopy - Industrial plants -
Industrial water treatment - Lead removal (water treatment) - Nitrification - Wastewater
treatment
Uncontrolled terms:Ammonia nitrogen wastewaters - Ammonia oxidizing bacteria -
Fluorescence in situ hybridization - Free ammonia - Nitrifying bacteria - Nitrite-
oxidizing bacteria - Specific oxygen uptake rate - Wastewater treatment plants
Classification code:445.1 Water Treatment Techniques - 445.1.2 Water Treatment
Techniques for Industrial Use - 452.4 Industrial Wastes Treatment and Disposal - 461.8
Biotechnology - 802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions - 804.2
Inorganic Compounds - 931.4 Quantum Theory; Quantum Mechanics
Numerical data indexing:Mass_Density 3.60e-03kg/m3 to 8.10e-03kg/m3, Mass_Density 6.60e-
03kg/m3, Mass_Density 8.10e-03kg/m3
DOI:10.13227/j.hjkx.201607116
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 29>
Accession number:20171003409560
Title:Remediation of decabromodiphenyl ether contaminated sediment through plant roots
enhanced by exogenous microbes
Authors:Yang, Lei-Feng (1); Yin, Hua (1); Peng, Hui (2); Li, Yue-Peng (3)
Author affiliation:(1) Key Laboratory of Pollution Control and Ecosystem Restoration in
Industry Clusters, College of Environment and Energy, South China University of
Technology, Guangzhou; 510006, China; (2) Department of Chemistry, Jinan University,
Guangzhou; 510632, China; (3) Guangzhou Hailin Electronic Technology Co., Ltd.,
Guangzhou; 510407, China
Corresponding author:Yin, Hua(huayin@scut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:721-727
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Decabromodiphenyl ether (BDE-209), a main ingredient of brominated flame
retardants, has drawn more and more attention because of the pollution it caused in
sediment. A pot experiment was conducted in a greenhouse to investigate the impact of
Brevibacillus brevis and Enterococcus casselifavus on the enhancement of phytoremediation
by Thalia dealbata, which is common in the river bank and was found to be an effective
plant for BDE-209 removal. The concentration of organic acids, the amount of
microorganisms and the ability of carbon utilization of soil microorganisms in different
experimental groups were analyzed. The results showed that the removal rate of BDE-209 in
the exogenous microbes containing groups were higher than that of the control. And B.
brevis presented the highest enhancement of phytoremediation with the removal rate rising
highest to 66% compared with the control (non-rhizosphere group 37.93% and no plant group
39.27%) after 60 days. The removal of BDE-209 in sediment, quantity of microorganism,
concentration of organic acids and the ability of carbon utilization of soil
microorganisms in rhizosphere sediment were higher than those in non-rhizosphere
sediment. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Microorganisms
Controlled terms:Bacteria - Bioremediation - Ethers - Flame retardants - Organic acids -
Pollution - River pollution - Sediments - Soil pollution control - Soils
Uncontrolled terms:Brevibacillus brevis - Brominated flame retardants - Contaminated
sediment - Decabromodiphenyl ethers - Decabromodiphenyl ethers (BDE209) - Experimental
groups - Plant - Soil micro-organisms
Classification code:453 Water Pollution - 454.2 Environmental Impact and Protection -
461.9 Biology - 483 Soil Mechanics and Foundations - 483.1 Soils and Soil Mechanics -
803 Chemical Agents and Basic Industrial Chemicals - 804.1 Organic Compounds
Numerical data indexing:Age 1.64e-01yr, Percentage 3.79e+01%, Percentage 3.93e+01%,
Percentage 6.60e+01%
DOI:10.13227/j.hjkx.201606180
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 30>
Accession number:20171003409526
Title:Correlation of speciated mercury with carbonaceous components in atmospheric
PM<inf>2.5</inf>in Shengsi Region
Authors:Cheng, Na (1); Qian, Guan-Lei (2); Duan, Lian (1); Zhao, Meng-Fei (1); Xiu,
Guang-Li (1)
Author affiliation:(1) State Environmental Protection Key Laboratory of Environmental
Risk Assessment and Control on Chemical Processes, School of Resources &
Environmental Engineering, East China University of Science and Technology, Shanghai;
200237, China; (2) Environmental Monitoring Station of Shengsi, Zhoushan; 202450, China
Corresponding author:Xiu, Guang-Li(xiugl@ecust.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:438-444
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:PM<inf>2.5</inf>samples of four seasons were collected from Nov. 2014 to Aug.
2015 at the site of Shengsi island in Zhoushan islands. Mercury (Hg) and speciated
mercury concentrations in PM<inf>2.5</inf>samples were measured by Atomic Fluorescence
Spectrometry (AFS-9130, China) after digestion with CEM Mars Xpress (PyNN Corporation,
USA). The concentrations of organic carbon (OC) and elemental carbon (EC) in
PM<inf>2.5</inf>samples were determined by thermal/optical carbon analyzer (DRI, USA).
The results showed that the daily concentrations of PM<inf>2.5</inf>-bounded mercury
(PBM) ranged from 0.02 to 1.25 ng·m<sup>-3</sup>. Moreover, the mass content of
PBM was (12.46±18.79) μg·g<sup>-1</sup>, which was higher than those in
continental cities. ANOVA analysis result suggested that the highest average mass
concentrations of PBM occurred in fall, sequentially followed by spring, winter and
summer. Higher concentrations of PBM were in fall and spring, which might be related to
biomass burning. In addition, RPM took the highest fraction of 53.1% in PBM, followed by
HPM (27.3%) and EPM (19.7%), which might be resulted from the complicated composition of
marine aerosols. The strong correlations among OC, EC and PBM indicated that carbonaceous
composition may affect the transport of Hg in the atmosphere. The ratio of OC/EC
represents atmospheric photo-oxidation capacity, so the positive correlation between
OC/EC ratio and HPM indicated that HPM was resulted from atmospheric gas-particle
transformation. The negative correlation between Char-EC/soot-EC and mercury species
indicated that the atmospheric particle-bounded mercury might come mainly from the input
of external mercury sources. © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Mercury (metal)
Controlled terms:Fluorescence spectroscopy - Organic carbon
Uncontrolled terms:Atmospheric particles - Atomic fluorescence spectrometry -
Carbonaceous components - Island - Mass concentration - Mercury species - Negative
correlation - Positive correlations
Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline
Earth Metals - 741.3 Optical Devices and Systems - 804.1 Organic Compounds
Numerical data indexing:Percentage 1.97e+01%, Percentage 2.73e+01%, Percentage 5.31e+01%
DOI:10.13227/j.hjkx.201607203
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 31>
Accession number:20171003409533
Title:Characteristics of mercury emissions from coal-fired power plants in Chongqing
Authors:Zhang, Cheng (1, 2); Zhang, Ya-Hui (1); Wang, Yong-Min (1); Wang, Ding-Yong (1,
2); Xu, Feng (3); Yang, Xi (3); He, Xiu-Qing (3)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400715, China; (3) Chongqing Solid Wastes Management Center,
Chongqing; 401117, China
Corresponding author:Wang, Ding-Yong(dywang@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:495-501
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Four typical coal-fired power plants in Chongqing, representing two different
boiler types (circulating fluidized bed boiler and pulverized coal boiler), were chosen
to investigate mercury emission characteristics through a mercury mass balance method by
analyzing mercury contents in all input and output raw materials in order to accurately
estimate mercury emissions. The results showed coal with mercury concentrations ranging
(80.77±6.39)-(266.83±4.71) μg·kg<sup>-1</sup>could be a
significant contributor of input mercury in these four studied power plants. Most mercury
output from these power plants entered into solid waste with high proportion of mercury
entering the fly ash in CFB plants and entering the fly ash and desulfurization gypsum in
PC plants. Mercury removal efficiencies of studied plants were in the range of 72.89%-
96.05%, and these efficiencies in CFB plants were higher than those in PC plants. The
mercury emission factors for EF<inf>electricity</inf>and EF<inf>coal</inf>of these four
plants were 4.66-29.47 μg·(kW·h)<sup>-1</sup>and 8.55-71.77
mg·t<sup>-1</sup>, respectively. The mercury emission was also calculated to be
6.13-429.17 g·d<sup>-1</sup>. Mercury emissions from coal-fired power plants were
associated with the content of mercury in coal, boiler type, generation load, pollution
control equipment, and so on. To control the mercury emissions, more attention should be
paid to improving the generation load, increasing the mercury removal efficiency of flue
gas cleaning equipment, and strengthening the supervision of solid waste re-utilization.
© 2017, Science Press. All right reserved.
Number of references:26
Main heading:Fossil fuel power plants
Controlled terms:Boilers - Cleaning - Coal - Coal ash - Coal fueled furnaces - Control
equipment - Efficiency - Fire tube boilers - Fluidized bed process - Fluidized beds -
Fly ash - Gas emissions - Gypsum plants - Mercury (metal) - Mining - Pollution control -
Pollution control equipment - Pulverized fuel - Pulverized fuel fired boilers - Removal
- Solid wastes - Surface morphology - Temperature measurement
Uncontrolled terms:Circulating fluidized bed boiler - Coal-fired power plant - Emission
factors - Mercury emissions - Pulverized coal boilers
Classification code:502.1 Mine and Quarry Operations - 524 Solid Fuels - 549.3
Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 614 Steam
Power Plants - 614.2 Steam Power Plant Equipment and Operation - 732.1 Control
Equipment - 802.3 Chemical Operations - 913.1 Production Engineering - 944.6
Temperature Measurements
Numerical data indexing:Percentage 7.29e+01% to 9.60e+01%
DOI:10.13227/j.hjkx.201608055
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 32>
Accession number:20171003409540
Title:Effect of coupling process of wetting-drying cycles and seasonal temperature
increasing on sediment nitrogen minerization in the water level fluctuating zone
Authors:Lin, Jun-Jie (1, 4); Liu, Dan (2); Zhang, Shuai (1); Yu, Zhi-Guo (3); He, Li-Ping
(1); Yu, Shun-Hui (1)
Author affiliation:(1) Key Laboratory of Water Environment Evolution and Pollution
Control in Three Gorges Reservoir, Chongqing Three Georges University, Chongqing; 404100,
China; (2) Department of Agricultural and Forestry Science and Technology, Chongqing
Three Gorges Vocation College, Chongqing; 404100, China; (3) College of Hydrometeorology,
Nanjing University of Information Science and Technology, Nanjing; 210044, China; (4) Key
Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent
Technology, Chinese Academy of Sciences, Chongqing; 400714, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:555-562
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To reveal the effect of coupling process of wetting-drying and seasonal
temperature on sediment nitrogen (N) minerization, surface sediment samples were
collected from the water level fluctuating zone(WLFZ) of Pengxi River crossing two
hydrological sections. The sediment samples were incubated under drying and submerging
conditions at the controlled temperature. The result showed that NO<inf>3</inf><sup>-
</sup>-N and sand% in the sediment of higher altitude of water level (170 m) were higher
than those in low altitudes (150 and 160 m), whereas contents of TN, NH<inf>4</inf><sup>
+</sup>-N and clay% and silt% in low altitudes were much higher. Generally, Net N
mineralization rate and cumulation were lower in higher altitude of water level during
the drying period and submerging period. The ammonification rate decreased rapidly at the
initial stage of incubation (0-7 d), and then had no obvious change, and no significant
differences among altitudes was observed. The nitrification rate at low altitude
decreased with incubation time, while it had only a little change at higher altitude; The
nitrification contributed a higher fraction of net N mineralization than ammonification.
Net N mineralization rate and its cumulation were significantly higher in the drying
period than in the submerging period, while net N mineralization rate decreased with
incubation time at all altitudes. Net N mineralization cumulation tended to rise first
and then declined at all altitudes of the drying period, whereas it was continuously
decreasing at the low water level altitude during the submerging period. Net N nitrogen
mineralization rate of the drying period was positively correlate to both the sediment
organic matter content and its C∶N ratio, while it showed a negative correlation in
the submerging period(P<0.001). Net N mineralization was sensitive to temperature
increase (Q<inf>10</inf>>1) in the drying period, while it was insensitive during the
submerging period of low altitude (Q<inf>10</inf><1). Thus, the impact of temperature
on Net N mineralization was relatively low in submerging period of winter and N was
accumulated with low releasing rate. In contrast to winter, summer exhibited warmer and
drying period, this two factors would lead to higher N mineralization rate and further
induce the potential risk of eutrophication as N releasing into water body. © 2017,
Science Press. All right reserved.
Number of references:32
Main heading:Drying
Controlled terms:Eutrophication - Mineralogy - Nitrification - Nitrogen - River pollution
- Sediments - Temperature - Water levels - Wetting
Uncontrolled terms:Controlled temperature - Impact of temperatures - N mineralization
rate - Nitrogen mineralization - Sediment organic matters - The drying period - The
submerging period - Three Gorges
Classification code:453 Water Pollution - 482 Mineralogy - 483 Soil Mechanics and
Foundations - 641.1 Thermodynamics - 802.2 Chemical Reactions - 804 Chemical Products
Generally
Numerical data indexing:Size 1.50e+02m, Size 1.60e+02m, Size 1.70e+02m
DOI:10.13227/j.hjkx.201607236
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 33>
Accession number:20171003416385
Title:Source apportionment of volatile organic compounds and health assessment of benzene
series in northern suburb of nanjing in winter
Authors:Zhang, Yu-Xin (1); An, Jun-Lin (1); Lin, Xu (2); Wang, Jun-Xiu (1); Shi, Yuan-Zhe
(1); Liu, Jing-Da (1)
Author affiliation:(1) Joint International Research Laboratory of Climate and Environment
Change, Collaborative Innovation Center on Forecast and Evaluation of Meteorological
Disasters, Nanjing University of Information Science and Technology, Nanjing; 210044,
China; (2) Hangzhou Environmental Monitoring Center, Hangzhou; 310007, China
Corresponding author:An, Jun-Lin(junlinan@nuist.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:1-12
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Volatile organic compounds (VOCs) in the atmosphere of the north suburb of
Nanjing in December 2015 were determined by GC5000 online gas chromatography, and the
main composition and characteristics of VOCs were analyzed by using the PMF receptor
model sources of VOCs parsing. The United States Environmental Protection Agency (EPA)
human exposure analysis and evaluation method in the United States were used to evaluate
Human health risk of benzene series. The results showed that there were 6 sources in the
PMF mode. Natural gas leakage accounted for 32.05%, automobile exhaust accounted for
18.99%, solvent use 13.67%, industrial emissions 2 13.20%, gasoline volatile 11.72%, and
industrial emissions 1 (chemical type) 10.36%. The high value areas of the emission
source were in accordance with the location of pollution sources surrounding the
observation point. The B/T ratio was 0.74, which was at a relatively high level.The
noncarcinogenic risk hazard quotient value HQ at 06:00 reached the highest value. HQ risk
values were within the safe range specified by EPA. HQ of each source was as follows:
automobile exhaust emissions 20.67×10<sup>-2</sup>, solvent use
6.97×10<sup>-2</sup>, natural gas leakage 6.34×10<sup>-2</sup>. In the
carcinogenic risk of benzene, automobile exhaust emissions was 4.11×10<sup>-
6</sup>, and natural gas leakage was 1.09×10<sup>-6</sup>, both were higher than
the EPA specified safety threshold. © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Gas chromatography
Controlled terms:Automobiles - Benzene - Chromatography - Environmental Protection Agency
- Fiber optic sensors - Gas emissions - Hazards - Health risks - Industrial emissions -
Natural gas - Organic compounds - Risk assessment - Volatile organic compounds
Uncontrolled terms:Automobile exhaust emissions - Carcinogenic risk - Hazard quotients -
Natural gas leakage - Noncarcinogenic risk - Online gas chromatography - Source
apportionment - United states environmental protection agencies
Classification code:451.1 Air Pollution Sources - 454.2 Environmental Impact and
Protection - 461.7 Health Care - 522 Gas Fuels - 662.1 Automobiles - 741.1.2 Fiber
Optics - 802.3 Chemical Operations - 804.1 Organic Compounds - 914.1 Accidents and
Accident Prevention
Numerical data indexing:Percentage 1.04e+01%, Percentage 1.17e+01%, Percentage 1.32e+01%,
Percentage 1.37e+01%, Percentage 1.90e+01%, Percentage 3.20e+01%
DOI:10.13227/j.hjkx.201605170
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 34>
Accession number:20171003416404
Title:Distribution, sources and risk assessment of the PAHs in the surface sediments and
water from the daye lake
Authors:Zhang, Jia-Quan (1); Hu, Tian-Peng (1, 2); Xing, Xin-Li (2); Zheng, Huang (2);
Zhang, Li (1); Zhan, Chang-Lin (1); Liu, Hong-Xia (1); Xiao, Wen-Sheng (1); Qi, Shi-Hua
(2)
Author affiliation:(1) School of Environmental Science and Engineering, Hubei Polytechnic
University, Huangshi; 435003, China; (2) School of Environmental Studies, China
University of Geosciences, Wuhan; 430074, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:170-179
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:8 surface sediments and 8 water samples were collected from the Daye Lake in
August 2015. The 16 kinds of EPA control polycyclic aromatic hydrocarbons (PAHs) were
analyzed by GC-MS. The results showed that the PAHs concentrations of surface sediments
and water ranged from 35.94 ng·g<sup>-1</sup>to 2 032.73 ng·g<sup>-
1</sup>and from 27.94 ng·L<sup>-1</sup>to 242.95 ng·L<sup>-1</sup>, with
average contents of 940.61 ng·g<sup>-1</sup>and 107.77ng·L<sup>-1</sup>,
respectively. The distribution of PAHs in surface sediments indicated that the contents
in the center samples were higher than those in the bank samples, but the water showed
nearly the opposite tendency. The 4-5 rings high molecular weight PAHs were the main
components in the surface sediments, and the 2, 4 and 5 rings PAHs were given priority in
water. Compared with the other domestic and oversea lakes, the PAHs pollution of the Daye
Lake was at a moderate level. Source apportionment showed that the PAHs in surface
sediments and water from the Daye Lake came from the combustion source, HWM-PAHs were the
dominant part of the PAHs in the sediment, reflecting the sediment PAHs pollution under
the effects of mining and smelting over a long period; All monomer PAHs and total PAHs
content in sediment did not exceed the ERM and FEL limiting values, showing that there
was no particularly serious ecological risk caused by PAHs in the surface sediments from
the Daye Lake; the incremental lifetime cancer risks assessment showed that the uptake
risk of PAHs in Daye Lake water through the ingestion and dermal absorption were both in
the acceptable range recommended by the USEPA, but all sites had higher risk than the
acceptable risk level recommended by the Sweden environmental protection agency and Royal
society. The pollution of seven carcinogenic PAHs needs prevention and control. ©
2017, Science Press. All right reserved.
Number of references:37
Main heading:Lake pollution
Controlled terms:Aromatic hydrocarbons - Environmental Protection Agency - Health risks -
Lakes - Pollution - Pollution control - Polycyclic aromatic hydrocarbons - Risk
assessment - Sediments - Surficial sediments - Water - Water absorption - Water
pollution
Uncontrolled terms:Acceptable risk levels - Carcinogenic PAHs - Combustion sources - High
molecular weight - Polycyclic aromatic hydrocarbons (PAHS) - Prevention and controls -
Source apportionment - Surface sediments
Classification code:453 Water Pollution - 454.2 Environmental Impact and Protection -
461.7 Health Care - 483 Soil Mechanics and Foundations - 802.3 Chemical Operations -
804.1 Organic Compounds - 914.1 Accidents and Accident Prevention
Numerical data indexing:Mass_Density 1.08e-07kg/m3, Mass_Density 2.79e-08kg/m3 to 2.43e-
07kg/m3
DOI:10.13227/j.hjkx.201606058
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 35>
Accession number:20171003416386
Title:Size distribution and mixing state of black carbon aerosol in nanjing during a
heavy winter pollution event
Authors:Jiang, Lei (1); Tang, Li-Li (1, 2); Pan, Liang-Bao (1, 2); Liu, Dan-Tong (3);
Hua, Yan (1); Zhang, Yun-Jiang (1); Zhou, Hong-Cang (1); Cui, Yu-Hang (1)
Author affiliation:(1) Jiangsu Collaborative Innovation Center of Atmospheric Environment
and Equipment Technology (CICAEET), School of Environmental Science and Engineering,
University of Information Science & Technology, Nanjing; 210044, China; (2) Jiangsu
Environmental Monitoring Center, Nanjing; 210036, China; (3) Centre for Atmospheric
Science, Atmospheric and Environmental Sciences, University of Manchester, Manchester;
M139PL, United Kingdom
Corresponding author:Tang, Li-Li(lily3258@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:13-21
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In December 2013, a lasting haze pollution event occurred in the Central and
East regions of China. Here in this paper, using a single-particle soot photometer (SP2),
we studied mass concentrations, mixing states, and size distributions of black carbon
(BC) in this event. The results showed that BC mass concentration in Nanjing during the
observation period was in the range of 1.01-14.05 μg·m<sup>-3</sup>with an
average of 4.39 μg·m<sup>-3</sup>, showing the characteristics of double peaks
for lighter pollution, andhigh in the nighttime and low in the daytime during heavier
pollution. Using the relative coating thickness(D<inf>p</inf>/D<inf>c</inf>)to define
mixing state of black carbon, diurnal variations were higher in early morning and noon
when slightly polluted, and lower during rush hour, indicating the degree of BC ageing
was deeper in the morning and afternoon, with fresher particles near the ground source
emissions during rush hour. The relative coating thickness did not vary greatly
throughout the day when heavily polluted, which was expected to be linked to regional
pollutants and it also showed Gas-solid transformation under high relative humidity. The
average mass and number size distribution had single peaking with the same BC volume-
equivalent diameter in different degrees of pollution, with the peak diameter at 100 nm
for the number distribution when heavily polluted, at 91 nm when slightly polluted, and
at 210 nm for the mass distribution regardless of the degree of pollution. We could find
regional differences of BC sources by comparing the observed research worldwide. This
study has very important reference value for the in-depth understanding of BC pollution
in Yangtze River Delta. © 2017, Science Press. All right reserved.
Number of references:38
Main heading:River pollution
Controlled terms:Coatings - Fog - Mixing - Photometers - Photometry - Pollution - Size
distribution - Soot - Thickness measurement
Uncontrolled terms:Black carbon - High relative humidities - In-depth understanding -
Mixing state - Nanjing - Number size distribution - Regional differences - Single
particle
Classification code:443.1 Atmospheric Properties - 453 Water Pollution - 802.3
Chemical Operations - 804 Chemical Products Generally - 813.2 Coating Materials - 922.2
Mathematical Statistics - 941.3 Optical Instruments - 941.4 Optical Variables
Measurements - 943.2 Mechanical Variables Measurements
Numerical data indexing:Size 1.00e-07m, Size 2.10e-07m, Size 9.10e-08m
DOI:10.13227/j.hjkx.201605167
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 36>
Accession number:20172603860995
Title:Distribution Characteristics and Influencing Factors of Organophosphorus Pesticides
in Typical Soil Environment of Jianghan Plain
Authors:Wang, Jian-Wei (1); Zhang, Cai-Xiang (1); Pan, Zhen-Zhen (2); Liao, Xiao-Ping
(1); Liu, Yuan (1); Lü, You (1); Tang, Mi (1)
Author affiliation:(1) State Key Laboratory of Biogeology and Environmental Geology,
China University of Geosciences, Wuhan; 430074, China; (2) Geography and Tourism College,
Chongqing Normal University, Chongqing; 400047, China
Corresponding author:Zhang, Cai-Xiang(caixiangzhang@yahoo.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1597-1605
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to study the distribution characteristics of organophosphorus
pesticides (OPPs)in the soil of Jianghan plain,78 profile-soil samples from various depth
and 7 surface-soil samples were collected in September,2015 in established groundwater
monitoring field site, Jianghan plain. The OPPs concentrations were determined by gas
chromatography with nitrogen-phosphorus detector(GC-NPD). The results showed that OPPs
were widespread in our studied area. The OPPs concentrations of suface-soil samples
ranged from 89.80 ng·g<sup>-1</sup>to 193.85 ng·g<sup>-1</sup>,with an
average of 140.05 ng·g<sup>-1</sup>, whereas the OPPs concentrations of profile-
soil samples ranged from 19.81 ng·g<sup>-1</sup>to 138.28 ng·g<sup>-
1</sup>,with an average of 40.99 ng·g<sup>-1</sup>. The main ingredients of OPPs
in surface and profile soil samples were methamidophos, omethoate, diazinon and
quinalphos,and the residual amount of 10 kinds of OPPs had posed a threat to agricultural
products according to the America soil pesticide residue limits standards. The horizontal
distribution of OPPs concentration in profile soil followed the order of nearby river
farm area>nearby river area>farm area, namely GS1-1>GS4>GS2>GS3. while the
vertical distribution mostly decreased at first and then increased with increasing depth.
The distribution characteristics of OPPs were also influenced by many factors, such as
application amount of OPPs, the adsorption and desorption actions of soil, vertical
movement of groundwater, the terrain environment in the study area, and the concentration
of soil organic matters. © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Soil surveys
Controlled terms:Agricultural products - Gas chromatography - Groundwater - Nitrogen -
Pesticides - Soil pollution - Soils
Uncontrolled terms:Distribution characteristics - Influencing factors - Jianghan plains -
Organophos-phorus pesticides - Typical soils
Classification code:444.2 Groundwater - 483.1 Soils and Soil Mechanics - 802.3
Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical
Products Generally - 821.4 Agricultural Products
DOI:10.13227/j.hjkx.201609206
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 37>
Accession number:20172603860987
Title:Function of Polyphosphate Kinase Gene in Biological Phosphate Removal During the
Wastewater Treatment Process
Authors:Nan, Ya-Ping (1); Zhou, Guo-Biao (1); Yuan, Lin-Jiang (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture & Technology, Xi'an; 710055, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1529-1535
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study aimed to identify the function of polyphosphate kinase gene (ppk) in
phosphorus removal. With the Red system, the target DNA with the homologous short arms
was amplified in the plasmid pKD4. Then the target DNA was transformed into E. coli
ATCC25922 which already had the suicide plasmid pKD46 by electroporation. The plasmid
pCP20 was transformed into the recombinant strains to delete the kanamycin resistance
gene. With the screening by negative resistance, together with verification using
positive and negative primers, the construction of ppk gene deletion strain E.
coli/ppk<sup>-</sup>Kan<sup>-</sup>was confirmed. The growth characteristics of both the
wild-type strain and the mutant strain were determined, and the phosphate accumulating
characteristics were compared when cultured in the phosphate luxuriant medium after
induced in the phosphate lacking medium. Also the phosphate accumulating characteristics
of the two strains were compared after cultured in the anaerobic and aerobic alternating
conditions for 5 times. The results showed that the ppk deletion strain E.
coli/ppk<sup>-</sup>Kan<sup>-</sup>was successfully constructed. There was no growth
difference between the mutant strain and the wild-type strain. But in the first 4 hours
of log phase, the mutant strain grew faster than the wild-type strain. And 8h later, when
both strains were in stationary phase, the mutant strain grew slower than the wild type,
indicating that ppk affected the growth of the bacteria. Cultured in the phosphate
lacking medium and the phosphate luxuriant medium, the mutant strain's ability of
phosphate accumulating didn't decrease in spite of having no ppk gene. After 5 times
induction, the amounts of phosphorus in both strains were about 1%-2%. The phosphate
amounts in the cells did not increase with increasing inducing times. Polyphosphate or
PHB was detected neither at anaerobic phase nor at the aerobic phase. It indicated that
the deletion of ppk did not affect the phosphorus removal in wastewater treatment
process, and the ppk gene did not show the function of phosphorus removal. © 2017,
Science Press. All right reserved.
Number of references:35
Main heading:Wastewater treatment
Controlled terms:Biological water treatment - DNA - Enzymes - Escherichia coli - Genes -
Phosphorus
Uncontrolled terms:Gene deletion - Growth characteristic - Phosphate removal - Phosphorus
removal - Polyphosphates - Recombinant strains - Wastewater treatment process - Wild-type
strain
Classification code:445.1 Water Treatment Techniques - 452.4 Industrial Wastes
Treatment and Disposal - 461.2 Biological Materials and Tissue Engineering - 804
Chemical Products Generally
Numerical data indexing:Percentage 1.00e+00% to 2.00e+00%, Time 1.44e+04s, Time 2.88e+04s
DOI:10.13227/j.hjkx.201606164
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 38>
Accession number:20172603860980
Title:Influencing Factors on the Degradation of PFOS Through VUV-SO<inf>3</inf><sup>2-
</sup>
Authors:Han, Hui-Li (1); Wang, Hong-Jie (1); Dong, Wen-Yi (1)
Author affiliation:(1) Shenzhen Key Laboratory of Water Resource Application and
Environmental Pollution Control, School of Civil and Environmental Engineering, Harbin
Institute of Technology Shenzhen Graduate School, Shenzhen; 518055, China
Corresponding author:Wang, Hong-Jie(whj1533@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1477-1482
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The objective of this experiment was to investigate the influence of
SO<inf>3</inf><sup>2-</sup>dosage, pH value, initial perfluorooctane sulfonate(PFOS)
concentration as well as coexisting substances on the degradation and defluorination of
PFOS by VUV-SO<inf>3</inf><sup>2-</sup>process. The results indicated that the increase
of SO<inf>3</inf><sup>2-</sup>dosage could lead to rise in the concentration of active
species hydrated electron(e<inf>aq</inf><sup>-</sup>) and thus enhance the degradation
and defluorination of PFOS. As the concentration of SO<inf>3</inf><sup>2-</sup>increased
from 1 mmol·L<sup>-1</sup>to 20 mmol·L<sup>-1</sup>, the degradation and
defluorination rates of PFOS increased from 45% and 40% to 97% and 63%, respectively. The
degradation and defluorination of PFOS were also enhanced with the increment of the
solution pH values, and the defluorination was more sensitive to the pH values. In
addition, more PFOS was degraded with the increase of initial PFOS mass concentration,
although the degradation and defluorination rates of PFOS were reduced. When the initial
PFOS mass concentration changed from 1 mg·L<sup>-1</sup>to 50 mg·L<sup>-
1</sup>, the degradation amount of PFOS after four hrs increased by about 50 times,
probably due to the higher utilization proportion of e<inf>aq</inf><sup>-</sup>at high
pollutants concentration. Last but not least, the influence of co-existing substances,
Cl<sup>-</sup>and HCO<inf>3</inf><sup>-</sup>, on PFOS degradation could be neglected,
whereas their effects on defluorination were observed. Defluorination of PFOS was
enhanced with the increased Cl<sup>-</sup>concentration, however, increased first and
then decreased with the increment of HCO<inf>3</inf><sup>-</sup>concentration. It was
also found that the presence of humic acid(HA) lowered degradation as well as
defluorination of PFOS owing to the blockage of effective UV light and trapping of active
species for photochemical reaction. © 2017, Science Press. All right reserved.
Number of references:22
Main heading:pH
Controlled terms:Hydration - Photochemical reactions
Uncontrolled terms:Hydrated electron - Influencing factors - Perfluorooctane sulfonates -
Photochemical reduction - VUV-SO<inf>3</inf><sup>2-</sup>
Classification code:741.1 Light/Optics - 801.1 Chemistry, General
Numerical data indexing:Mass_Density 1.00e-03kg/m3 to 5.00e-02kg/m3, Molar_Concentration
1.00e+00mol/m3 to 2.00e+01mol/m3, Percentage 4.00e+01% to 9.70e+01%, Percentage 4.50e
+01%, Percentage 6.30e+01%
DOI:10.13227/j.hjkx.201609204
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 39>
Accession number:20172603860992
Title:Assessment of Heavy Metal Pollution and Tracing Sources by Pb & Sr Isotope in
the Soil Profile of Woodland in Quanzhou
Authors:Sun, Jing-Wei (1, 2); Yu, Rui-Lian (1); Hu, Gong-Ren (1); Su, Guang-Ming (1);
Wang, Xiao-Ming (3)
Author affiliation:(1) Department of Environmental Science and Engineering, Huaqiao
University, Xiamen; 361021, China; (2) School of Resources and Environmental Science,
Quanzhou Normal University, Quanzhou; 362000, China; (3) Center of Analysis, Beijing
Research Institute of Uranium Geology, Beijing; 100029, China
Corresponding author:Hu, Gong-Ren(grhu@hqu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1566-1575
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The contents of 8 heavy metal elements (Sr, Ni, Fe, Cr, Cu, Mn, Pb, Zn) and the
lead & strontium isotope composition of soil profile of woodland in Quanzhou city
were analyzed by AAS and ICP-MS, respectively. A modified BCR four-step sequential
extraction procedure was carried out to obtain the speciation fractionation of heavy
metals in the soil profile from 4 stations. The results of the heavy metal elements and
the speciation fractionation of heavy metals in the soil profile showed that the heavy
metal pollution in the woodland in Quanzhou was relatively light, and the main pollution
factor was Sr. The non-residue state of Pb was the highest, leading to the highest
activity. The result of Nemero comprehensive pollution index showed that Sr in the depth
of 0-60 cm was at heavy pollution level. The results of the RSP showed that the activity
of Pb was the highest. The results of EF showed that Pb, Sr, Mn and Zn had exogenous
sources. Factor analysis showed that the main sources of heavy metals were the compound
pollution of agricultural activities, natural resources, and the vehicle exhaust.
Composition of Pb isotopic ratios showed that, Pb in soil profile of woodland in Quanzhou
was from vehicle exhaust and parent material. The contribution rates of the two sources
in the soil profile were calculated by using the two-mixed model. The contribution rates
of parent material and vehicle exhaust were 85.14%(62.53%-98.36%) and 14.86%(1.640%-
37.47%) on average, respectively. Strontium isotope tracing results showed that the main
sources of strontium were also vehicle exhaust and parent material. Coupling both Pb and
Sr isotope ratios agreed with the above mentioned results. © 2017, Science Press.
All right reserved.
Number of references:37
Main heading:Copper
Controlled terms:Factor analysis - Heavy metals - Isotopes - Lead - Manganese -
Multivariant analysis - Pollution - Soils - Strontium - Vehicles - Zinc
Uncontrolled terms:Enrichment factors - Source apportionment - Sr isotopes - Vertical
profile - Woodland
Classification code:483.1 Soils and Soil Mechanics - 531 Metallurgy and Metallography -
543.2 Manganese and Alloys - 544.1 Copper - 546.1 Lead and Alloys - 546.3 Zinc and
Alloys - 549.2 Alkaline Earth Metals - 922 Statistical Methods - 922.2 Mathematical
Statistics
Numerical data indexing:Percentage 1.64e+00% to 3.75e+01%, Percentage 6.25e+01% to 9.84e
+01%, Size 0.00e+00m to 6.00e-01m
DOI:10.13227/j.hjkx.201609131
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 40>
Accession number:20172603861001
Title:Effect of Application of Sewage Sludge Composts on Greenhouse Gas Emissions in Soil
Authors:Yang, Yu-Han (1); Yi, Jian-Ting (1); Zhang, Cheng (1, 2); Chen, Hong (1, 2); Mu,
Zhi-Jian (1, 2)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400715, China
Corresponding author:Zhang, Cheng(zhcheng@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1647-1653
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Effect of application of sewage sludge compost on the emission of greenhouse gas
from soil was investigated by analyzing the dynamic characteristics and emission factor
of CO<inf>2</inf>, CH<inf>4</inf>and N<inf>2</inf>O in soil after spiking two different
composts (A: compost with biochar, B: compost without biochar) with varying fertilizing
amount into soil. The results indicated that emissions of CO<inf>2</inf>and
CH<inf>4</inf>mainly occurred in the plant growth period with low fertilizer amount of
biomass charcoal compost reducing CO<inf>2</inf>emissions, and high application content
increasing CO<inf>2</inf>emissions. CH<inf>4</inf>emission fluxes showed negative values,
indicating that soil could adsorb CH<inf>4</inf>, and the adsorbing amount for control
was significantly higher than those for other treatments (P<0.01). The absorbing
amount in treatment A increased with the fertilizing amount (P<0.05). N<inf>2</inf>O
emissions mainly occurred at the germination and seedling stages, and emission fluxes
increased with the fertilizing amount (P<0.01). N<inf>2</inf>O was considered as the
main generated greenhouse gas during agricultural process with sludge compost, and its
emission factor from sludge compost soil was 1.02%-1.90% (A compost) and 1.28%-2.93% (B
compost), respectively. Biochar could significantly reduce the carbon emission, as the
total greenhouse gas released from soil with biochar compost was 19.49% to 35.56% less
than that in soil without biochar, which was more obvious for N<inf>2</inf>O emission
reduction (compared with CH<inf>4</inf>mitigation). © 2017, Science Press. All right
reserved.
Number of references:29
Main heading:Composting
Controlled terms:Carbon - Carbon dioxide - Charcoal - Emission control - Gas emissions -
Gases - Greenhouse effect - Greenhouse gases - Sewage sludge - Soils
Uncontrolled terms:Agricultural process - Bio chars - Carbon emissions - Compost products
- Dynamic characteristics - Emission characteristics - Emission reduction - Sewage sludge
compost
Classification code:451 Air Pollution - 452.2 Sewage Treatment - 483.1 Soils and Soil
Mechanics - 524 Solid Fuels - 804 Chemical Products Generally - 804.2 Inorganic
Compounds
Numerical data indexing:Percentage 1.95e+01% to 3.56e+01%
DOI:10.13227/j.hjkx.201606060
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 41>
Accession number:20172603860998
Title:Effects of Biochar on Surface Albedo and Soil Respiration in Suburban Agricultural
Soil
Authors:Zhang, Yang-Yang (1); Hu, Xue-Yu (1); Zou, Juan (1); Zhang, Di (1); Chen, Wei
(1); Wang, Xiang-Qian (1); Chen, Yao-Jun (1); Liu, Yang (1)
Author affiliation:(1) School of Environmental Studies, China University of Geosciences,
Wuhan; 430074, China
Corresponding author:Hu, Xue-Yu(huxueyu@cug.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1622-1632
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Biochar application to soils is currently considered as a means of mitigating
climate change by sequestering C, which withdraws CO<inf>2</inf>from the atmosphere and
consequently influences the trend of global climate change. However, only a few studies
have been done on surface albedo variations on farmland, it might be true that the
application of biochar to soil could induce a radiative forcing by changing the surface
albedo. Based on this background, this study aiming at the characterization of seasonal
changes in albedo on the farmland both with plants and without plants, and its effect on
soil temperature, soil moisture, soil respiration and soil organic carbon fractions.
There were 3 major treatments in the experiment with 3 repetition of each major
treatment, namely, CK (the control treatment), BC0.5 (biochar applied at 0.5 kg·
(m<sup>2</sup>·a)<sup>-1</sup>) and BC4.5 (biochar applied at 4.5 kg·
(m<sup>2</sup>·a)<sup>-1</sup>). Each major treatment contained 2 sub-treatments,
which were crop cultivation (+) and non-cultivation (-). The experiment results showed
that in the early stage of crop growth (maize seedling stage to jointing stage, wheat
seedling stage to winter period), the surface albedo of BC4.5+ and BC0.5+ significantly
decreased compared with CK+(P<0.05). The biggest surface albedo decline rates of
BC4.5+ and BC0.5+ in winter wheat season were 23.7%, 17.9% and 44.5%, 44.9% in summer
maize season. The leaf area index of each treatment was remarkably correlated with the
surface albedo. The shadow produced by the development of crop canopy structure would
cover the change of surface color induced by the input of biochar. Under the condition of
bare land, the surface albedo of biochar treatment was significantly decreased compared
with the control treatment(P<0.05). Compared with the control treatments, the soil
CO<inf>2</inf>flux of the biochar treatments was significantly increased(P<0.05). With
the extension of time, the growth rate of soil CO<inf>2</inf>flux of biochar treatment
was decreased gradually. The increase from BC4.5+ to CK+ was gradually reduced from
276.7% to 36.1%, and the increase of BC4.5- from to CK- was significantly reduced from
163.5% to 39.8%. The increase of soil CO<inf>2</inf>flux could be derived from the
mineralization of the readily decomposed carbon fractions in the biochar-soil system. The
decrease of surface albedo caused by the input of biochar had no direct effect on soil
respiration, and the input of biochar could reduce the temperature sensitivity of soil
respiration. This result could provide a foundation for the verification of the chemical
and biological stability of biochar. © 2017, Science Press. All right reserved.
Number of references:31
Main heading:Soils
Controlled terms:Atmospheric radiation - Carbon dioxide - Chemical stability - Climate
change - Crops - Cultivation - Farms - Organic carbon - Plants (botany) - Soil moisture
- Solar radiation
Uncontrolled terms:Agricultural soils - Bio chars - Chemical and biologicals - Global
climate changes - Soil organic carbon - Soil respiration - Surface albedo - Temperature
sensitivity
Classification code:443.1 Atmospheric Properties - 483.1 Soils and Soil Mechanics -
657.1 Solar Energy and Phenomena - 801 Chemistry - 804.1 Organic Compounds - 804.2
Inorganic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest
Control
Numerical data indexing:Percentage 1.64e+02% to 3.98e+01%, Percentage 1.79e+01%,
Percentage 2.37e+01%, Percentage 2.77e+02% to 3.61e+01%, Percentage 4.45e+01%, Percentage
4.49e+01%
DOI:10.13227/j.hjkx.201609149
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 42>
Accession number:20172703864526
Title:Distributions, Sources and Pollution Assessment of Hg in Sediment of Douhe
Reservoir in Tangshan City
Authors:Wu, Ting-Ting (1); Wang, Ming-Meng (2); Chen, Xu-Feng (3); Liu, Wen-Li (3); Li,
Tai-Shan (3); Yan, Hai-Yu (4); He, Tian-Rong (1); Li, Zhong-Gen (4)
Author affiliation:(1) Key Laboratory of Karst Environment and Geohazard Prevention,
Guizhou University, Guiyang; 550003, China; (2) College of Environmental Science and
Engineering, Taiyuan University of Technology, Taiyuan; 030024, China; (3) Tangshan
Municipal Environmental Monitoring Center, Tangshan; 063000, China; (4) State Key
Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of
Sciences, Guiyang; 550081, China
Corresponding author:Li, Zhong-Gen(lizhonggen@vip.skleg.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:979-986
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Sediment cores from Douhe reservoir in Tangshan City were sampled in August
2013, in order to evaluate the mercury (Hg) pollution degree and its possible sources.
Agriculture soils surrounding the Douhe reservoir and sediments from an upstream
reservoir (Daheiting) were also collected. Total mercury (THg), methylmercury (MeHg),
dissolved mercury in pore water (DHg) and organic matter (OM) in sediment of Douhe
reservoir were analyzed, while, only THg in the agriculture soils and upstream reservoir
sediments was determined. Finally, the geoaccumulation index method was applied to
evaluate the Hg pollution status in soils and reservoir sediments. The results showed
that THg content in sediment of Douhe reservoir ranged from 19 to 97 ng·g<sup>-
1</sup>. dw, MeHg (dw) from 0.02 to 1.27 ng·g<sup>-1</sup>, and the contents of
both THg and MeHg were higher in the upper layers than the deeper layers, indicating that
Hg in sediments was increasing in recent years by the exogenetic loadings. THg (dw) in
soils offshore the Douhe reservoir, which is close to a large coal-fired power plant,
averaged at 22 ng·g<sup>-1</sup>. Among the three sediment cores of Douhe
reservoir, the central point had the highest THg, followed by the western site, and the
eastern site had the lowest THg. While, THg content (dw) in sediments of Daheiting
reservoir was much higher, with a mean of 176 ng·g<sup>-1</sup>. Combining all the
above information, we concluded that Hg in Douhe reservoir was mainly derived from the
Daheiting reservoir and the mercury atmospheric deposition from the nearby coal-fired
power plant contributed a less content. THg and MeHg in the sediments of Douhe reservoir
were positively correlated with OM, indicating that OM in sediments had good ability of
adsorbing THg and MeHg, and also played an important role in Hg methylation. The
geoaccumulation index (I<inf>geo</inf>) showed that the Hg pollution status deceased in
this order: central of Daheting, Daba of Daheting, central of Douhe, western of Douhe,
eastern of Douhe, soils surrounding Douhe. Central and western sites in Douhe belonged to
moderate pollution and the eastern site belonged to slight pollution. While, sediments of
Daheiting reservoir, affected by the iron ore mining activities, were in the moderate and
strong pollution status. © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Sediments
Controlled terms:Agriculture - Alkylation - Coal - Coal fueled furnaces - Fossil fuel
power plants - Mercury (metal) - Meteorological problems - Petroleum reservoir evaluation
- Pollution - Reservoirs (water) - Sedimentation - Soils
Uncontrolled terms:Agriculture soils - Atmospheric depositions - Coal-fired power plant -
Geo-accumulation index - Methyl mercury - Pollution assessment - Reservoir sediments -
Total mercuries
Classification code:441.2 Reservoirs - 443.1 Atmospheric Properties - 483 Soil
Mechanics and Foundations - 483.1 Soils and Soil Mechanics - 512.1.2 Petroleum Deposits
: Development Operations - 524 Solid Fuels - 549.3 Nonferrous Metals and Alloys
excluding Alkali and Alkaline Earth Metals - 802.2 Chemical Reactions - 802.3 Chemical
Operations - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
DOI:10.13227/j.hjkx.201609088
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 43>
Accession number:20172703864557
Title:Input and Distribution of Photosynthesized Carbon in Soil-Rice System Affected by
Water Management and Nitrogen Fertilization
Authors:Wang, Ting-Ting (1, 2); Zhu, Zhen-Ke (1); Zhu, Han-Hua (1); Tang, Zhen-Zhu (1,
3); Pang, Jing (3); Li, Bao-Zhen (1); Su, Yi-Rong (1); Ge, Ti-Da (1); Wu, Jin-Shui (1)
Author affiliation:(1) Key Laboratory of Subtropical Agriculture Ecology, Institute of
Subtropical Agriculture, Chinese Academy of Sciences, Changsha; 410125, China; (2)
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing;
100049, China; (3) Faculty of Resources and Environmental Science, Hubei University,
Wuhan; 430062, China
Corresponding author:Zhu, Zhen-Ke(zhuzhenke@isa.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1227-1234
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Fertilizer and water management are two key factors for rice growth. A better
understanding of the carbon (C) cycling in paddy soil requires investigation into the
input characteristics and distribution dynamics of photosynthesized carbon in rice-soil
system. We grew rice (Zhongzao 39) in PVC pots and used the<sup>13</sup>C-
CO<inf>2</inf>continuous labeling method to quantify the allocation of photosynthesized
carbon in rice-soil system under two regimes (Drying-rewetting vs. continuous watering)
and N fertilization (250 mg·kg<sup>-1</sup>vs. no addition). The results showed
that nitrogen fertilizer application increased rice shoot biomass and the amount of C and
N, but had no significant influence on rice root biomass. Thus, nitrogen fertilizer
application decreased rice biomass root/shoot ratio significantly. Drying-rewetting with
N fertilizer treatment resulted in higher total C and N amount by 22% and 33%,
respectively, in the shoot, and by 36% and 44%, respectively in the root than continuous
watering with nitrogen fertilizer treatment. These results indicated that nitrogen
fertilizer application promoted the growth of rice shoot. Nitrogen fertilizer application
significantly increased the<sup>13</sup>C content in rice shoot by 32%-83% over the
control without N addition. Nitrogen fertilizer application also increased
the<sup>13</sup>C recovery in rice shoot by 6%-32%, but decreased that in the root by
18%-59%. Pertaining to water effect, drying-rewetting with N application increased the
amount of<sup>13</sup>C in rice shoot and root. However, without N addition, the amount
and the recovery of<sup>13</sup>C in shoot dropped by 10.3 mg·pot<sup>-1</sup>and
12%, respectively, compared with the continuous watering treatment. The root, on the
other hand, recorded increases in both the amount and the recovery of<sup>13</sup>C by
1.9 mg·pot<sup>-1</sup>and 57%, respectively. Furthermore, the deposition of
assimilated C into rhizosphere-soil increased by both the individual and the interactive
effects of N fertilizer application and drying-rewetting treatment. Thus, combining N
fertilizer and drying-rewetting water management led to more increased allocation and
deposition of photosynthesized carbon in soil-rice system compared with combined
continuous flooding and N application. This study was able to quantify the partitioning
and allocation of rice photosynthesized carbon into different plant and soil pools under
different water and N fertilizer treatments, and can serve as a useful guide for better
water and nutrient management practices in paddy-rice production that can achieve both
sustainable high yield and sequestration of more C within the paddy soil system. ©
2017, Science Press. All right reserved.
Number of references:42
Main heading:Nitrogen fertilizers
Controlled terms:Biomass - Carbon dioxide - Deposition - Drying - Ecology - Fertilizers -
Nitrogen - Recovery - Soils - Water management
Uncontrolled terms:Drying-rewetting - Fertilizer applications - Interactive effect -
Nitrogen fertilization - Nutrient management - Rhizodeposition - Rhizosphere soils - Rice
Classification code:454.3 Ecology and Ecosystems - 483.1 Soils and Soil Mechanics -
802.3 Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic
Compounds
Numerical data indexing:Percentage 1.20e+01%, Percentage 1.80e+01% to 5.90e+01%,
Percentage 2.20e+01%, Percentage 3.20e+01% to 8.30e+01%, Percentage 3.30e+01%, Percentage
3.60e+01%, Percentage 4.40e+01%, Percentage 5.70e+01%, Percentage 6.00e+00% to 3.20e+01%
DOI:10.13227/j.hjkx.201608068
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 44>
Accession number:20172703864519
Title:Characteristics of Spatial Distribution of Bacterial Aerosols Produced by Fountain
Authors:Zhang, Chong-Miao (1); Yuan, Lin (1); Xu, Peng-Cheng (1); Liu, Ke-Xin (1)
Author affiliation:(1) International Science and Technology Cooperation Center for Urban
Alternative Water Resources Development, School of Environmental and Municipal
Engineering, Xi'an University of Architecture and Technology, Xi'an; 710055, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:911-917
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To illuminate the spatial distribution of bacterial aerosols produced by
fountain, sprinkler test was conducted in this study. Escherichia coli NK5449 was used as
the test strain, and bacterial aerosols were sampled by Anderson six-stage air sampler at
different sites around the sprinkler. The concentration and particle size distribution of
bacterial aerosols and the correlation between droplet diameter and bacterial aerosols
concentration were analyzed. The results showed that the concentration of bacterial
aerosols ranged from (38±15) CFU·m<sup>-3</sup>to (676±92)
CFU·m<sup>-3</sup>in the space of 0.75 m to 1.75 m from the ground and 0.5 m to 3
m away from the sprinkler. The bacterial aerosol concentration decreased along with the
increase of the height and the distance between the sampling site and the sprinkler, and
had significant negative correlation with droplet diameter (P<0.05). With the increase
of the distance to sprinkler, the proportion of bacterial aerosol particles with size of
larger than 4.7 μm decreased at first and increased subsequently; while the proportion
of bacterial aerosol particles with size between 2.1 and 4.7 μm increased firstly and
then decreased. The bacterial aerosol particles mainly existed in the part with size
between 1.1 and 4.7 μm at sampling sites more than 0.5 m away from the sprinkler. It
indicated that bacterial aerosols with small size may be inhaled by people far away from
the fountain, and the risk should not be ignored. © 2017, Science Press. All right
reserved.
Number of references:32
Main heading:Spatial distribution
Controlled terms:Aerosols - Drops - Escherichia coli - Fountains - Particle size -
Particle size analysis - Size distribution
Uncontrolled terms:Air samplers - Andersons - Bacterial aerosols - Droplet diameters -
Negative correlation - Sampling site - Six stages
Classification code:921 Mathematics - 922.2 Mathematical Statistics - 951 Materials
Science
Numerical data indexing:Size 1.10e-06m to 4.70e-06m, Size 2.10e-06m to 4.70e-06m, Size
4.70e-06m, Size 5.00e-01m3 to 3.00e+00m3, Size 5.00e-01m, Size 7.50e-01m to 1.75e+00m
DOI:10.13227/j.hjkx.201608102
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 45>
Accession number:20172703864539
Title:Biological Toxicity Evaluation of Domestic Wastewater Based on A<sup>2</sup>/O
Treatment Processes Using a Battery of Bioassays
Authors:Zhang, Qiu-Ya (1); Ma, Xiao-Yan (1); Wang, Xiao-Chang (1); You, Meng (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Corresponding author:Wang, Xiao-Chang(xcwang@xauat.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1084-1092
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to accurately evaluate the comprehensive ecotoxicity of domestic
wastewater and the toxicity reduction efficiency of different treatment processes,
standardized assays focusing on Vibrio fischeri, SOS/umu test and yeast estrogen screen
were applied. Simultaneously, male zebrafish was used to address the mode of action of
endocrine disrupting effects of wastewater and reclaim water on aquatic life. Results of
this study indicated that the influent was severely polluted: highly acute toxicity,
genotoxicity and estrogenicity were observed. After the secondary biological treatment,
the above toxicities were significantly reduced, making the water quality improved.
However, the estrogencity of secondary effluent was detected at 1.89 ng·L<sup>-
1</sup>, which still posed potential risk on the aquatic life in receiving water. In
addition, the up-regulation of estrogen receptor (esr1) and vitellogenin (vtg1) in the
livers of zebrafish was observed after exposure to 2.5 times concentrated wastewaters,
which demonstrated that wastewater modulates hormonal activities of aquatic life by
disturbing target genes expression. Moreover, the slight down-regulation of esr1 was
observed in the gonads. These observations reflect that the evaluation of biological
toxic effect should be analyzed in different tissues or organs, so that more
comprehensive information about the adverse effects of wastewaters on aquatic life can be
obtained. © 2017, Science Press. All right reserved.
Number of references:37
Main heading:Biological water treatment
Controlled terms:Biological organs - Effluents - Electric batteries - Gene expression -
Gene expression regulation - Toxicity - Wastewater treatment - Water pollution - Water
quality
Uncontrolled terms:Domestic wastewater - Estrogenicity - Genotoxicities - Luminescent
bacteria - Security level - Zebrafish
Classification code:445.1 Water Treatment Techniques - 445.2 Water Analysis - 452.3
Industrial Wastes - 452.4 Industrial Wastes Treatment and Disposal - 453 Water
Pollution - 461 Bioengineering and Biology - 702.1 Electric Batteries
Numerical data indexing:Mass_Density 1.89e-09kg/m3
DOI:10.13227/j.hjkx.201607186
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 46>
Accession number:20172703864547
Title:Effects of Organic Loading Rate on Startup Performance of Anaerobic Digestion with
Vinegar Residues
Authors:Dai, Xiao-Hu (1); Yu, Chun-Xiao (1); Li, Ning (1); Dong, Bin (1); Dai, Ling-Ling
(1)
Author affiliation:(1) State Key Laboratory of Pollution Control and Resource Reuse,
College of Environmental Science and Engineering, Tongji University, Shanghai; 200092,
China
Corresponding author:Li, Ning(lining@tongji.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1144-1150
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Biochemical methane potential experiments were conducted to investigate the
effects of organic loading rate on the performance of anaerobic digesters with vinegar
residues. According to the comparisons of methane production and liquid phase
compositions, as well as thermogravimetry, X-ray Diffraction and infrared spectroscopy
analyses, the conclusions could be drawn that: (1) Lower organic loading rate was better
to mitigate the accumulation of VFAs and pH decrease during the hydrolysis and
acidification of organic matters, which consequently improved methane production. When
the inoculum to substrate ratio was 1:1[organic loading rate of 1.78 g·
(L·d)<sup>-1</sup>, pH=7.60], the cumulative methane production was the highest,
reaching 2249.7 mL, and the performance of the digesters was stable. The VFAs content
increased with the increase of the organic loading rate, leading to the suppression and
further the stop of methane production. And when the inoculum to substrate ratio was 1:4
[organic loading rate of 7.12 g·(L·d)<sup>-1</sup>, pH=5.52], the
simultaneous generation of acetate and lactic acids could be achieved at 8000
mg·L<sup>-1</sup>and 2650 mg·L<sup>-1</sup>, respectively. (2) As vinegar
residues were short-range ordered with microcrystalline structure or mainly contained
amorphous substances, they were more biodegradable than feedstocks such as corn stalk.
During the anaerobic digestion processes, the degradation rates of lignin, cellulose and
hemicellulose increased with the decrease of organic loading rate. © 2017, Science
Press. All right reserved.
Number of references:25
Main heading:Loading
Controlled terms:Acetic acid - Anaerobic digestion - Cellulose - Degradation - Infrared
spectroscopy - Methane - Substrates - Thermogravimetric analysis - Volatile fatty acids -
X ray diffraction
Uncontrolled terms:Anaerobic digestion process - Biochemical methane potential -
Cellulose and hemicellulose - Hydrolysis and acidifications - Inoculum to substrate
ratios - Microcrystalline structures - Organic loading rates - Vinegar residues
Classification code:691.2 Materials Handling Methods - 801 Chemistry - 802.2 Chemical
Reactions - 804.1 Organic Compounds - 811.3 Cellulose, Lignin and Derivatives
Numerical data indexing:Mass_Density 2.65e+00kg/m3, Mass_Density 8.00e+00kg/m3, Volume
2.25e-03m3
DOI:10.13227/j.hjkx.201607238
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 47>
Accession number:20172703864513
Title:Characteristics of Reactive VOCs Species During High Haze-Pollution Events in
Suburban Area of Shanghai in Winter
Authors:Gao, Shuang (1); Zhang, Kun (1); Gao, Song (2); Xiu, Guang-Li (1); Cheng, Na (1);
Pan, Yan (3)
Author affiliation:(1) State Environmental Protection Key Laboratory of Environmental
Risk Assessment and Control on Chemical Processes, School of Resources &
Environmental Engineering, East China University of Science and Technology, Shanghai;
200237, China; (2) Shanghai Environmental Monitoring Center, Shanghai; 200235, China; (3)
Shanghai High School, Shanghai; 200231, China
Corresponding author:Xiu, Guang-Li(xiugl@ecust.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:855-866
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on the online measurements of VOCs of high pollution process at the
university site in winter, VOCs' characteristics and species at different levels of haze
pollution were analyzed. Fifty-five VOCs were detected during sampling.
∑<inf>55</inf>VOCs concentrations ranged between 25.5×10<sup>-9</sup>-
1320.3×10<sup>-9</sup>(avg±SD, 240×10<sup>-
9</sup>±181×10<sup>-9</sup>). Toluene and xylene were the major pollutants
during high pollution process, the concentrations of which were higher than those of
industrial area. The university site shared a similar VOC composition with that of
industrial area, which suggested that it might be influenced by the surrounding
industries. VOCs species exhibited high concentrations in nighttime while low
concentrations in daytime. The ozone concentrations were on the contrary. Aromatic
hydrocarbons were predominant with a high percentage of contribution (70.0%) to OFP
(ozone formation potential). Alkenes and alkynes were the second highest group (16.7%).
The OFP of VOCs was 2078.2×10<sup>-9</sup>under the west-south wind direction,
about 4 times higher than the value under other wind directions (505.8×10<sup>-
9</sup>). Aromatic hydrocarbons exhibited a predominant contribution to OFP at different
levels of haze pollution in this area, among which, Toluene and xylene contributed more
than 50% to OFP. The newest version of EPA PMF model was used to identify the major
source of VOCs and evaluate their contributions. Gasoline sources and vehicle exhaust,
refinery and petroleum products, solvent use and organic synthetic materials were the
identified VOC sources in the study area, contributing 33.1%, 31.5%, 30.5%, and 4.9%,
respectively to the ∑<inf>55</inf>VOCs concentrations. © 2017, Science Press.
All right reserved.
Number of references:34
Main heading:Air pollution
Controlled terms:Air pollution control - Aromatic compounds - Aromatic hydrocarbons -
Hydrocarbons - Organic solvents - Ozone - Pollution - Toluene - Volatile organic
compounds - Xylene
Uncontrolled terms:Haze pollutions - Low concentrations - On-line measurement - Ozone
concentration - Ozone formation potentials - Photochemical ozone - Synthetic materials -
Typical species
Classification code:451 Air Pollution - 451.2 Air Pollution Control - 804 Chemical
Products Generally - 804.1 Organic Compounds
Numerical data indexing:Percentage 1.67e+01%, Percentage 3.05e+01%, Percentage 3.15e+01%,
Percentage 3.31e+01%, Percentage 4.90e+00%, Percentage 7.00e+01%
DOI:10.13227/j.hjkx.201609084
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 48>
Accession number:20171003416416
Title:Impact of biodegradable organic matter on the functional microbe activities in
partial nitrification granules
Authors:Wang, Shu-Yong (1); Qian, Fei-Yue (1, 2, 3); Wang, Jian-Fang (1, 2, 3); Shen,
Yao-Liang (1, 2, 3)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Jiangsu Key Laboratory of
Environmental Science and Engineering, Suzhou; 215009, China; (3) Jiangsu High Education
Collaborative Innovation Center of Water Treatment Technology and Material, Suzhou;
215009, China
Corresponding author:Wang, Jian-Fang(wjf302@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:269-275
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To explore the short-term impact of biodegradable organic matter on the
activities of different functional microbes in autotrophic partial nitrification granular
sludge (PNG), the variations of both nitrogen transformation performance and dissolved
oxygen (DO) uptake of PNG were investigated in this study, by carrying out successive
batch tests with and without the organics stressing. The results showed that the higher
the C/N ratio, the lower the specific nitrite accumulation rate of q
(NO<inf>2</inf><sup>-</sup>-N). Meanwhile, the increase of heterotrophic bacteria (HeB)
activities caused the fast DO uptake by PNG, which could effectively suppress nitrite
oxidizing bacteria (NOB) with the low oxygen affinity. When inorganic substrate culture
was employed in the following phase, both HeB and NOB showed low activities, with
significant increase in q(NO<inf>2</inf><sup>-</sup>-N). In short, the adverse effects of
biodegradable organic matter on the performance of PNG system were partially reversible,
which could benefit to enhance the advantage of ammonium oxidizing bacteria (AOB) and
improve the stability of partial nitrification reaction. © 2017, Science Press. All
right reserved.
Number of references:28
Main heading:Bacteria
Controlled terms:Biogeochemistry - Biological materials - Dissolved oxygen - Electronic
guidance systems - Granulation - Microorganisms - Nitration - Nitrification - Nitrogen
oxides - Organic compounds
Uncontrolled terms:Ammonium oxidizing bacteria - Biodegradable organic matter -
Functional microbe activities - Heterotrophic bacterias - Nitrite-oxidizing bacteria -
Partial nitrification
Classification code:461.2 Biological Materials and Tissue Engineering - 461.9 Biology -
481.2 Geochemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804.1
Organic Compounds - 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201607076
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 49>
Accession number:20171003416405
Title:Effects of ph and complexing agents on Sb(V) adsorption onto birnessite and
ferrihydrite surface
Authors:Wang, Hua-Wei (1); Li, Xiao-Yue (1); Li, Wei-Hua (1); Sun, Ying-Jie (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Qingdao
University of Technology, Qingdao; 266033, China
Corresponding author:Sun, Ying-Jie(yjsun1971@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:180-187
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Effects of pH and complexing agents on Sb(V) adsorption onto birnessite and
ferrihydrite surface were investigated. The results indicated that birnessite and
ferrihydrite had strong ability to adsorb Sb(V). The removal efficiencies of Sb(V) by
birnessite and ferrihydrite were dependent on the initial pH in solution. The removal
efficiency of Sb(V) increased with the decrease of solution pH. At pH 5.0, the removal
efficiencies, adsorption rate and adsorption capacity were better than those at pH 7.0 or
9.0. The adsorption process of Sb(V) on birnessite and ferrihydrite could be well
described by the pseudo-second-order model. The Langmuir model best described the
adsorption behavior of Sb(V) by birnessite and ferrihydrite at pH 5.0. The presence of
citric acid or EDTA had significant effect on Sb(V) adsorption onto birnessite and
ferrihydrite. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Adsorption
Controlled terms:Efficiency - pH - Removal
Uncontrolled terms:Adsorption behavior - Adsorption behaviour - Adsorption capacities -
Birnessite - Complexing agents - Ferrihydrites - Pseudo-second order model - Removal
efficiencies
Classification code:801.1 Chemistry, General - 802.3 Chemical Operations - 913.1
Production Engineering
DOI:10.13227/j.hjkx.201606165
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 50>
Accession number:20171003416403
Title:Pollution level, distribution characteristics and risk assessment of 32 PPCPs in
surface water of luomahu lake
Authors:Zhang, Qin (1); Zhang, Sheng-Hu (1); Wang, Zhen (1); Guo, Min (1); Liu, Ji-Ning
(1); Shi, Li-Li (1); Gu, Wen (1)
Author affiliation:(1) Key Laboratory of Pesticide Environmental Assessment and Pollution
Control of National Environmental Protection, Nanjing Institute of Environmental
Sciences, Ministry of Environmental Protection, Nanjing; 210042, China
Corresponding author:Liu, Ji-Ning(ljn@nies.org)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:162-169
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A total of 22 water samples collected from Luomahu Lake were determined using
high performance liquid chromatography tandem mass spectrometry(HPLC-MS/MS) to evaluate
the pollution level, spatial distribution and ecological risk of 32 PPCPs. 23 PPCPs were
detected in surface water of Luomahu Lake and the total concentrations of 22 samples were
892-1 536 ng·L<sup>-1</sup>. The concentration of norfloxacin (256-707
ng·L<sup>-1</sup>) was the highest among the detected PPCPs, followed by
ketoprofen (85-438 ng·L<sup>-1</sup>), acesulfame (101-290 ng·L<sup>-
1</sup>) and naproxen (1.9-112 ng·L<sup>-1</sup>). Spatial differences were found
in concentrations of PPCPs in various sampling sites. Concentrations of PPCPs in
northeast of Luomahu Lake were higher than those of southwest. Concentration of PPCPs in
Fangtinghe River was high and that of Zhangshanzha River was relatively low. The risk
assessment of 13 pharmaceutical PPCPs showed that risk quotients(RQs) of norfloxacin were
0.26-0.72, posing medial risk to aquatic ecosystem. Gemifibrozil posed low ecological
risks with RQs>0.01 in most sampling sites. RQs of other 11 PPCPs were less than 0.01,
posing no ecological risks. The combined risk quotients of 12 PPCPs in water of Luomahu
Lake were 0.29-0.75, indicating that those compounds posed an medial risk to aquatic
ecosystem. Human health risk assessment showed that the RQs were less than one for 6
selected PPCPs, indicating that these compounds did not appear to pose an appreciable
risk to human health by potential environmental exposure from drinking water. ©
2017, Science Press. All right reserved.
Number of references:48
Main heading:Risk assessment
Controlled terms:Aquatic ecosystems - Drug products - Ecology - Ecosystems - Health -
Health risks - High performance liquid chromatography - Lake pollution - Lakes - Liquid
chromatography - Mass spectrometry - Pollution - Potable water - River pollution -
Surface waters - Water - Water pollution
Uncontrolled terms:Distribution characteristics - Ecological risk assessment -
Environmental exposure - High-performance liquid chromatography tandem mass
spectrometries - Human health risk assessment - Pharmaceuticals and personal care
products - Risk to human health - Spatial differences
Classification code:444 Water Resources - 444.1 Surface Water - 453 Water Pollution -
454.3 Ecology and Ecosystems - 461.6 Medicine and Pharmacology - 461.7 Health Care -
801 Chemistry - 914.1 Accidents and Accident Prevention
Numerical data indexing:Mass_Density 1.01e-07kg/m3 to 2.90e-07kg/m3, Mass_Density 1.90e-
09kg/m3 to 1.12e-07kg/m3, Mass_Density 2.56e-07kg/m3 to 7.07e-07kg/m3, Mass_Density
8.50e-08kg/m3 to 4.38e-07kg/m3, Mass_Density 8.92e-07kg/m3 to 1.54e-06kg/m3
DOI:10.13227/j.hjkx.201606184
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 51>
Accession number:20171003416407
Title:Effect of dissolved humic acid on thyroid receptor antagonistic activity of zinc in
aquatic environment
Authors:Ai, Yang (1); Kong, Dong-Dong (1); Yu, Chang (1); Shen, Yang (1); Li, Jian (1)
Author affiliation:(1) Engineering Research Center of Ground Water Pollution Control and
Remediation, College of Water Science, Beijing Normal University, Beijing; 100875, China
Corresponding author:Li, Jian(lijian@bnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:195-200
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A rapid recombinant human thyroid (hTR) gene yeast bioassay was used to evaluate
the effect of dissolved humic acid on thyroid receptor antagonistic activity of
ZnCl<inf>2</inf>. The concentration of bio-available zinc after its reaction with
dissolved humic acids was measured by anodic stripping voltammetry(ASV). Furthermore, the
reaction mechanism of humic acid and zinc was investigated by three-dimensional
excitation-emission matrix fluorescence spectroscopy (3DEEM). The results revealed that
ZnCl<inf>2</inf>demonstrated strong thyroid receptor antagonistic activity, and the
concentration inhibiting 20% of the maximum effect of ZnCl<inf>2</inf>was
1.70×10<sup>-5</sup>mol·L<sup>-1</sup>. The thyroid receptor antagonistic
activity of ZnCl<inf>2</inf>was reduced by 30%-50% after the reaction of dissolved humic
acids. The results of ASV showed that the concentration of bio-available zinc was
decreased after the reaction of dissolved humic acids, the result was similar to that of
bioassay test. The thyroid receptor antagonistic activity of the mixed solution of humic
acid and ZnCl<inf>2</inf>was increased after UV radiation treatment, however it was still
lower than the antagonistic activity induced by ZnCl<inf>2</inf>. The results of 3DEEM
showed that ZnCl<inf>2</inf>could reduce the fluorescence peak intensity of humic acid,
which could intuitively characterize the interaction between humic acid and
ZnCl<inf>2</inf>. The above results can provide basic data and theoretical support for
zinc toxicity study in aquatic environment and the establishment of water quality
criteria for znic. © 2017, Science Press. All right reserved.
Number of references:32
Main heading:Enzyme immobilization
Controlled terms:Bioassay - Biological materials - Dissolution - Fluorescence -
Fluorescence spectroscopy - Organic acids - Voltammetry - Water analysis - Water quality
- Zinc
Uncontrolled terms:3DEEM - Anodic stripping voltammetry - Antagonistic activity -
Excitation-emission matrix fluorescence spectroscopies - Humic acid - Radiation
treatments - Thyroid disrupting effects - Water quality criteria
Classification code:445.2 Water Analysis - 461.2 Biological Materials and Tissue
Engineering - 461.6 Medicine and Pharmacology - 546.3 Zinc and Alloys - 741.1
Light/Optics - 741.3 Optical Devices and Systems - 801.4.1 Electrochemistry - 802.3
Chemical Operations - 804.1 Organic Compounds
Numerical data indexing:Percentage 2.00e+01%, Percentage 3.00e+01% to 5.00e+01%
DOI:10.13227/j.hjkx.201605211
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 52>
Accession number:20171003416419
Title:Effect of cadmium on biodegradation of nonylphenol by pseudomonas aeruginosa
Authors:Shi, Guang-Yu (1); Cheng, Yuan-Yuan (1); Shi, Wei-Lin (1)
Author affiliation:(1) College of Environmental Science and Engineering, Suzhou
University of Science and Technology, Suzhou; 215009, China
Corresponding author:Shi, Wei-Lin(weilin-shi@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:294-300
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The influence of Cd on the degradation of nonylphenol (NP) by P.aeruginosa SH1
was investigated in this study. The investigation revealed that biomass of the strain was
significantly declined with the increase of Cd<sup>2+</sup>concentration. The biomass was
declined by 27.1% in the presence of 10 mg·L<sup>-1</sup>Cd<sup>2+</sup>after 24
h. The addition of Cd<sup>2+</sup>had a great influence on adsorption of NP by the
strain. As for the effect of living stain, adsorption by P.aeruginosa SH1 cells was
stimulated at low concentrations of Cd<sup>2+</sup>(0.5 mg·L<sup>-1</sup>), while
inhibited at higher levels(≥5 mg·L<sup>-1</sup>). As for inactivation of
microbes, adsorption by cells was stimulated at higher concentrations, but was only
slightly influenced at low levels. The results showed that the intracellular enzymes had
much greater degradation rate than the living cells. Different concentrations of
Cd<sup>2+</sup>had different effects on bacteria and intracellular enzyme degradation of
NP separately. The degradation efficiency when using intracellular enzymes and bacteria
was inhibited at higher levels of Cd<sup>2+</sup>and the intracellular enzyme inhibition
was more significant. Degradation by cells was stimulated at low concentrations of
Cd<sup>2+</sup>, but no significant impact was found on that by intracellular enzymes.
The degradation process of NP by intracellular enzymes of the strain conformed to the
first-order kinetic model. The highest reaction rate was achieved when the concentrations
of Cd<sup>2+</sup>was 0.5 mg·L<sup>-1</sup>and the half-life of this substrate was
5.5 h. However, the degradation process of NP by the strain did not conform to the
first-order kinetic model. © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Enzyme inhibition
Controlled terms:Adsorption - Bacteria - Biodegradation - Cells - Cytology - Degradation
- Enzyme kinetics - Enzymes - Kinetic parameters - Kinetic theory - Kinetics - Phenols -
Pollution
Uncontrolled terms:Degradation efficiency - Degradation process - Different effects -
First-order kinetic models - Intracellular enzyme - Low concentrations - Nonylphenols -
Pseudomonas aeruginosa
Classification code:461.2 Biological Materials and Tissue Engineering - 461.8
Biotechnology - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804.1 Organic
Compounds - 931 Classical Physics; Quantum Theory; Relativity
Numerical data indexing:Mass_Density 5.00e-04kg/m3, Percentage 2.71e+01%, Time 1.98e+04s,
Time 8.64e+04s
DOI:10.13227/j.hjkx.201607107
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 53>
Accession number:20171003409567
Title:Straw composts with composite inoculants and their effects on soil carbon and
nitrogen contents and enzyme activity
Authors:Nie, Wen-Han (1, 2); Qi, Zhi-Ping (2, 4); Feng, Hai-Wei (2); Sun, Yu-Jing (3);
Zhi, Yue-E (2); Zhang, Jin-Zhong (1); Zhang, Dan (2)
Author affiliation:(1) Key Laboratory of Eco-environments in Three Gorges Reservoir
Region, College of Resources and Environment, Southwest University, Chongqing; 400715,
China; (2) Key Laboratory of Urban Agriculture (South), School of Agriculture and
Biology, Shanghai Jiao Tong University, Shanghai; 200240, China; (3) Agro-technical
Extension and Service Center of Shanyang Town, Jinshan District, Shanghai; 201518, China;
(4) Sino-Singapore Thaisheng Agricultural Demonstration Farm, Shanghai; 202161, China
Corresponding author:Zhang, Jin-Zhong(jzhzhang@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:783-791
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The utilization of straw resources is of great significance to agricultural
environmental protection and sustainable agricultural development. Based on the isolated
15 high-efficient cellulose degrading bacteria in the laboratory, the composite
inoculants (JFB-1) which can effectively degrade crop straw were screened, and the
effects of straw composts with the composite inoculants on soil carbon and nitrogen
contents and enzyme activity were studied. The results showed that the composite
inoculants could accelerate straw decomposition for 1-2 d during single fermentation
period, and the organic matter contents in straw composts reached 403.5-515.1
g·kg<sup>-1</sup>, while the ratio of carbon and nitrogen decreased from 10.53 to
15.30. The pot experiments found that the application effects of rice straw composts were
generally better than those of corresponding asparagus straw composts. Compared with the
control compost of rice straw, when the application amount of rice straw compost using
the composite inoculants was 150 g·kg<sup>-1</sup>, the contents of soil organic
matter and total nitrogen increased by 33.5% and 7.3%, and soil urease and cellulase
activities increased by 16.7% and 30.8%, respectively. Compared with no fertilization
treatment, the application of straw composts could improve soil microbial community
structure, and increase microbial diversity indices. When the application amount of rice
straw compost using the composite inoculants was 100 g·kg<sup>-1</sup>, the
biomass of common Chinese cabbage cultivated for 30 d increased by 46.4% compared to the
control compost of rice straw. These results indicated that the composite inoculants have
great application potential in straw composts. © 2017, Science Press. All right
reserved.
Number of references:29
Main heading:Composting
Controlled terms:Agriculture - Biodegradation - Biogeochemistry - Biological materials -
Enzyme activity - Enzymes - Microorganisms - Nitrogen - Organic compounds - Soils
Uncontrolled terms:Cellulose degrading bacteria - Organic matter content - Soil enzyme
activity - Soil microbial community - Soil microbial community structure - Soil nutrients
- Straw composts - Sustainable agricultural development
Classification code:461 Bioengineering and Biology - 481.2 Geochemistry - 483.1 Soils
and Soil Mechanics - 804 Chemical Products Generally - 804.1 Organic Compounds - 821
Agricultural Equipment and Methods; Vegetation and Pest Control
Numerical data indexing:Percentage 1.67e+01%, Percentage 3.08e+01%, Percentage 3.35e+01%,
Percentage 4.64e+01%, Percentage 7.30e+00%
DOI:10.13227/j.hjkx.201607140
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 54>
Accession number:20171003416402
Title:Comparison of nitrogen and phosphorus uptake and water purification ability of five
submerged macrophytes
Authors:Jin, Shu-Quan (1); Zhou, Jin-Bo (1); Bao, Wei-Hong (2); Chen, Jun (3); Li, Dan-
Dan (3); Li, Yang (1)
Author affiliation:(1) Ecology and Environment Institute, Ningbo Academy of Agricultural
Science, Ningbo; 315040, China; (2) Environmental Protection Research and Design
Institute of Ningbo, Ningbo; 315012, China; (3) Ningbo Yima Environmental Biotechnology
Co., Ltd., Ningbo; 315000, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:156-161
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Uptake of nitrogen(N) and phosphorus(P) and their purification capacity for five
native submerged macrophytes were investigated in laboratory simulated hydrostatic
conditions, including Hydrilla verticillata, Vallisneria natans, Ceratophyllum demersum,
Myriophyllum spicatum, Potamogeton maackianus. The results indicated that the moisture
contents of different submerged macrophytes were almost the same before and after the
test,with the range of 89.8%-92.0%. The net accumulated biomass changed from 1.52
g·m<sup>-2</sup>to 12.92 g·m<sup>-2</sup>among different submerged
macrophytes, and the highest net accumulated biomass of Hydrilla verticillata was 8.5
times higher than the lowest plant of Potamogeton maackianus. The N and P contents of
five submerged macrophytes ranged from 26.54 to 34.44g·kg<sup>-1</sup>and from
2.54 to 4.01g·kg<sup>-1</sup>, respectively, and the N and P contents of
Ceratophyllum demersum were relatively high. Total N and P removal efficiency of
different submerged macrophyte treatments had ranges of 63.8%-83.1% and 49.2%-70.8%,
significantly higher than those of the CK treatment (39.9% and 36.9%), respectively, and
the removal efficiency decreased in the order of Hydrilla verticillata>Ceratophyllum
demersum>Vallisneria natans>Myriophyllum spicatum>Potamogeton maackianus. Total
N and P removal efficiencies of different submerged macrophyte treatments were
significantly correlated with net accumulated biomass, with correlation coefficients of
0.994 (P<0.01) and 0.996 (P<0.01). The contribution of direct N and P uptake to
different submerged macrophytes had the ranges of 1.5%-13.3% and 2.2%-13.2%, and the
synergism contribution (deducting self-purification capacity of water) of different
submerged macrophytes ranged 22.5%-29.9% and 10.1%-20.6%, indicating that the synergistic
effect of submerged macrophytes purification was much more significant than the direct
uptake effect in the process of water purification. © 2017, Science Press. All right
reserved.
Number of references:29
Main heading:Purification
Controlled terms:Biomass - Efficiency - Nitrogen - Phosphorus - Removal - Water treatment
plants
Uncontrolled terms:Ceratophyllum demersum - Correlation coefficient - Hydrostatic
conditions - Myriophyllum spicatum - Nitrogen and phosphorus - Submerged macrophytes -
Submerged plants - Water purification
Classification code:445.1 Water Treatment Techniques - 804 Chemical Products Generally
- 913.1 Production Engineering
Numerical data indexing:Percentage 1.01e+01% to 2.06e+01%, Percentage 1.50e+00% to 1.33e
+01%, Percentage 2.20e+00% to 1.32e+01%, Percentage 2.25e+01% to 2.99e+01%, Percentage
3.69e+01%, Percentage 3.99e+01%, Percentage 4.92e+01% to 7.08e+01%, Percentage 6.38e+01%
to 8.31e+01%, Percentage 8.98e+01% to 9.20e+01%
DOI:10.13227/j.hjkx.201606135
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 55>
Accession number:20172603860969
Title:Modeling of Water Quality Response to Land-use Patterns in Taizi River Basin Based
on Partial Least Squares
Authors:Li, Lin-Lin (1, 2); Zhang, Yi-Zhang (2); Tang, Chang-Yuan (3); Zheng, Lei (1, 2);
Meng, Wei (2); Lu, Shao-Yong (2); Dun, Yu (4)
Author affiliation:(1) College of Water Sciences, Beijing Normal University, Beijing;
100875, China; (2) State Key Laboratory of Environmental Criteria and Risk Assessment,
Chinese Research Academy of Environmental Sciences, Beijing; 100012, China; (3) College
of Environmental Sciences and Engineering, Sun Yat-sen University, Guangzhou; 510275,
China; (4) Institute of Hydrogeology and Environmental Geology, Chinese Academy of
Geological Science, Shijiazhuang; 050061, China
Corresponding author:Zhang, Yi-Zhang(zhangyz@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1376-1383
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Land use change in river basin is one of the most significant factors that
influence river water quality. Based on remote sensing images and river water quality
data of Taizi River Basin, partial least squares (PLS) model was applied to explore the
relationship between water quality and land use patterns at sub-watershed scale. In this
study, PLS model was established by using the percentage of area of land use patterns
from seven different sub-watersheds as the variables and the concentrations of four water
quality parameters as the observations. The established model was further tested with the
data from other sub-watersheds in Taizi River Basin. The results indicated that total
nitrogen (TN) and nitrate (NO<inf>3</inf><sup>-</sup>) were significantly associated with
land use types in Taizi River Basin with determination coefficient (R<sup>2</sup>)
greater than 0.62. As for chloride (Cl<sup>-</sup>) and sulfate (SO<inf>4</inf><sup>2-
</sup>), measured values and fitted values had a relatively low fitting precision
(R<sup>2</sup><0.5), which meant land use pattern was not the main factor affecting
the concentrations of Cl<sup>-</sup>and SO<inf>4</inf><sup>2-</sup>in river water.
Meanwhile, river water quality had a strong correlation with the percentage of area of
unused land at the sub-basin scale (influence coefficient >0.24), although unused land
area in the Taizi river basin was small. © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Water resources
Controlled terms:Image reconstruction - Land use - Least squares approximations -
Nitrates - Rivers - Water quality - Watersheds
Uncontrolled terms:Determination coefficients - Influence coefficient - Land use pattern
- Model of water quality - Partial least square (PLS) - Partial least squares models -
Taizi rivers - Water quality parameters
Classification code:403 Urban and Regional Planning and Development - 444 Water
Resources - 444.1 Surface Water - 445.2 Water Analysis - 804.2 Inorganic Compounds -
921.6 Numerical Methods
DOI:10.13227/j.hjkx.201605109
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 56>
Accession number:20172603861007
Title:Bioaccumulation and Correlation of Heavy Metals in Human Hairs From Urban and Rural
Areas of Chongqing
Authors:He, Ming-Jing (1, 2); Li, Qi (1); Wang, Deng-Xiang (1); Zhao, Jia-Yuan (1); Yang,
Ting (1)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400716, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1697-1703
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In the present study, human hair samples were collected in Chongqing to detect
the concentrations of heavy metals including Cd, Cu, Ni, Pb and Zn by flame atomic
absorption spectrophotometry. Meanwhile, the relationship between the content of heavy
metals and age, gender and smoking habits was also analyzed, and the potential sources of
the heavy metals in human hair were understood through correlation analysis and principal
component analysis. The results showed that the mean concentrations of Cd, Cu, Ni, Pb and
Zn were 3.1, 24.3, 9.7, 42.8 and 209.6 μg·g<sup>-1</sup>, respectively in urban
areas, while the mean contents were 0.9, 15.8, 5.6, 15.2 and 173.4 μg·g<sup>-
1</sup>, respectively in rural area. The residents living in urban areas exhibited
significantly higher concentrations than those in rural area, revealing the same heavy
metal pattern with that in soils (t-test, P<0.01). No obvious trend was observed
between the contents of heavy metals and age, except that the contents of Cu and Zn were
increasing with the growth of age. Significantly higher concentrations of Cd and Pb were
both observed in male hair and smokers than those in female and non-smokers, respectively
in urban and rural areas (P<0.01). Similar correlation patterns among Cd, Cu, Ni and
Pb were found both in urban and rural areas. According to principal component analysis,
Cu, Ni and Pb contaminations had similar sources in urban areas, whereas Cd, Ni and Pb
had similar sources in rural area. © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Copper
Controlled terms:Biochemistry - Cadmium - Correlation methods - Heavy metals - Lead -
Metal analysis - Nickel - Pollution - Principal component analysis - Rural areas - Zinc
Uncontrolled terms:Chongqing - Correlation analysis - Correlation patterns - Flame atomic
absorption spectrophotometry - Gender - Hair - Mean concentrations - Urban and rural
areas
Classification code:531 Metallurgy and Metallography - 544.1 Copper - 546.1 Lead and
Alloys - 546.3 Zinc and Alloys - 548.1 Nickel - 549.3 Nonferrous Metals and Alloys
excluding Alkali and Alkaline Earth Metals - 801.2 Biochemistry - 922.2 Mathematical
Statistics
DOI:10.13227/j.hjkx.201610030
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 57>
Accession number:20172603860985
Title:Effect of SRT on Stability of Yeast-SBR in Treating Oil-containing Wastewater
Authors:Lü, Wen-Zhou (1); Zhang, Shu-Lin (1); Qiao, Yu-Xiang (1); Liu, Ying (1)
Author affiliation:(1) College of Architectural, Civil Engineering and Environment,
Ningbo University, Ningbo; 315211, China
Corresponding author:Liu, Ying(liuying1@nbu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1513-1519
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Sludge retention time(SRT) is a crucial parameter to influence the stability of
biological wastewater treatment systems. Especially, the effects of SRT on yeast-
wastewater treatment remain unclear. In this study, mixtures of yeast strains were
applied to treat oil-containing wastewater in sequencing batch reactors(SBR) and the
effects of sludge retention time(SRT as 5, 10, 20, 40 d) on the removal efficiency of
pollutants, contents and composition of extracellular polymeric substances(EPS), yeast
cells settleability and yeast communities were investigated. The results showed that the
recommended SRT was 5-10 d for the yeast-SBR system; Higher SRT led to decrease of COD
removal rate and content of EPS; the tightly-bounded EPS was the major one which
consisted of polysaccharides. SRT of 5-40 d had no significant effects on the SVI of
yeast cells, however, longer SRT (>20 d) resulted in the increase of mycelial cells
and a tendency to produce the filamentous bulking. In the continuous operation of SBR,
three extraneous yeast strains capable of utilizing or degrading oil were identified in
the systems under the short and long SRT. To conclude, shorter SRT was favorable for the
system stability in treating oil-containing wastewater by yeasts. © 2017, Science
Press. All right reserved.
Number of references:28
Main heading:Wastewater treatment
Controlled terms:Activated sludge process - Batch reactors - Biological water treatment -
Cells - Cytology - Polymers - System stability - Yeast
Uncontrolled terms:Biological waste water treatment - Continuous operation -
Extracellular polymeric substances - Filamentous bulking - Mycelial cells - Removal
efficiencies - Sequencing batch reactors - Sludge retention time
Classification code:445.1 Water Treatment Techniques - 452.2 Sewage Treatment - 452.4
Industrial Wastes Treatment and Disposal - 461.2 Biological Materials and Tissue
Engineering - 802.1 Chemical Plants and Equipment - 815.1 Polymeric Materials - 822.3
Food Products - 961 Systems Science
DOI:10.13227/j.hjkx.201607175
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 58>
Accession number:20172603860990
Title:Effect of Environment Adjustment Layers on Nitrogen Transformation in Anaerobic
Bioreactor Landfills
Authors:He, Zheng-Kun (1); Song, Bo-Yu (2, 3); Zhu, Nan-Wen (1); Dong, Jun (3)
Author affiliation:(1) School of Environmental Science and Engineering, Shanghai Jiao
Tong University, Shanghai; 200240, China; (2) Environmental Protection Research Institute
of Light Industry, Beijing; 100089, China; (3) Key Laboratory of Groundwater Resources
and Environment, College of Environment and Resources, Jilin University, Changchun;
130021, China
Corresponding author:Dong, Jun(dongjun@jlu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1551-1557
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To investigate the perennial effect of environment adjustment layers on the
interior environment and nitrogen transformation in anaerobic bioreactor landfills, three
sets of simulated anaerobic bioreactor landfills and two kinds of environment adjustment
layers of mineralized refuse with heavy calcium carbonate (R2) and mineralized refuse
with natural zeolites (R3) were designed and established. The degradation and
transformation of nitrogen in waste and leachate had been monitored for 390 days. The
results showed that, the value orders of pH, alkalinity, oxidation reduction potential
and moisture content (MS) were pH(R2)>pH(R3)>pH(R1), alkalinity (R2)>alkalinity
(R3)>alkalinity (R1), Eh(R2)<Eh(R3)<Eh(R1) and MS(R3)>MS(R2)>MS(R1). In
R1, R2 and R3, the degradation rates of total nitrogen, ammonia nitrogen, nitrate
nitrogen in waste were 79.2%, 82.3% and 88.5%, 48.3%, 60.1% and 67.7%, 38.5%, 44.2% and
53.4%, respectively. Concentration comparison results of total nitrogen, ammonia nitrogen
and nitrate nitrogen in leachate were TN(R3)<TN(R2)<TN(R1), NH<inf>4</inf><sup>
+</sup>-N(R3)<NH<inf>4</inf><sup>+</sup>-N(R1)<NH<inf>4</inf><sup>+</sup>-N(R2)
(Chinese Character)NO<inf>3</inf><sup>-</sup>-N(R3)<NO<inf>3</inf><sup>-</sup>-N(R2)
<NO<inf>3</inf><sup>-</sup>-N(R1). Additionally, both of mineralized refuse with heavy
calcium carbonate and mineralized refuse with natural zeolites could long-term adjust and
optimize the interior environment of anaerobic bioreactor landfills for the degradation
and conversion of nitrogen. Mineralized waste with natural zeolite could not only promote
the degradation and transformation of nitrogen components in waste and leachate, but also
control the accumulation of ammonia nitrogen through leachate recirculation. © 2017,
Science Press. All right reserved.
Number of references:38
Main heading:Nitrogen
Controlled terms:Alkalinity - Ammonia - Bioconversion - Bioreactors - Calcium - Calcium
carbonate - Degradation - Land fill - Leachate treatment - Nitrates - pH - pH effects -
Zeolites
Uncontrolled terms:Anaerobic bioreactors - Effect of environments - Environment
adjustment layers - Heavy Calcium Carbonate - Interior environments - Nitrogen
transformations - Oxidation reduction potential - Transformation
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal -
549.2 Alkaline Earth Metals - 801.1 Chemistry, General - 802.1 Chemical Plants and
Equipment - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.2
Inorganic Compounds
Numerical data indexing:Age 1.07e+00yr, Percentage 3.85e+01%, Percentage 4.42e+01%,
Percentage 4.83e+01%, Percentage 5.34e+01%, Percentage 6.01e+01%, Percentage 6.77e+01%,
Percentage 7.92e+01%, Percentage 8.23e+01%, Percentage 8.85e+01%
DOI:10.13227/j.hjkx.201606046
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 59>
Accession number:20172603860966
Title:Catalytic Combustion of Soot Particulates over Rare Earth Pyrochlore Oxides Doped
with Transition Metals
Authors:Li, Xi-Feng (1, 2); Sun, Yu-Qi (2); Wang, Zhong-Peng (2); Mu, Zong-Gang (2); Cui,
Zhao-Jie (1)
Author affiliation:(1) School of Environmental Science and Engineering, Shandong
University, Ji'nan; 250100, China; (2) College of Chemistry and Chemical Engineering,
University of Ji'nan, Ji'nan; 250022, China
Corresponding author:Wang, Zhong-Peng(chm_wangzp@ujn.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1348-1356
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Catalytic combustion is an efficient way to remove soot particulates from
automobile exhausts. A series of rare earth pyrochlore oxides
La<inf>2</inf>Sn<inf>1.8</inf>TM<inf>0.2</inf>O<inf>7</inf>(TM=Sn, Mn, Fe, Co, Cu) were
prepared with CTAB-assisted sol-gel method. The products were characterized by
XRD,N<inf>2</inf>Adsorption-Desorption, SEM, FT-IR, H<inf>2</inf>-TPR and PL techniques.
Their catalytic activity for soot oxidation was investigated by TPO under tight
conditions in both O<inf>2</inf>and NO+O<inf>2</inf>atmospheres. After calcination at
900℃, the as-synthesized oxides with pure pyrochlore phase displayed nanospheres
with diameter of 30-60 nm and relatively large surface areas. The partial substitution of
Sn with transition metals largely influenced the reduction behavior of pyrochlores
especially on the low temperature range in H<inf>2</inf>-TPR profiles, which was due to
the interactions between Sn and transition metals. The improved oxygen mobility might be
derived from the structure defects induced by transition metals doping, which could be
helpful in oxidation reactions. In comparison with uncatalyzed reactions, the
La<inf>2</inf>Sn<inf>2</inf>O<inf>7</inf>catalyst exhibited modest catalytic activity for
soot combustion, while transition metals incorporation further enhanced the activity and
selectivity. The improved activity of transition metals doped samples was likely to be
associated with the improved reducibility and increased surface oxygen vacancies on the
pyrochlore oxides. The presence of NO in the gas phase significantly enhanced the soot
oxidation activity, which was due to the promotion effect of NO<inf>2</inf>. Especially,
the densities of active oxygen sites and turnover frequency (TOF) values of the
catalysts, quantified by isothermal anaerobic titration with soot as a probe molecule,
were used to explain the different soot combustion behaviors. Among the pyrochlore
oxides, the Co-doped pyrochlore sample displayed the highest ignition activity and the
largest intrinsic activity with TOF of 3.20×10<sup>-3</sup>s<sup>-1</sup>. ©
2017, Science Press. All right reserved.
Number of references:37
Main heading:Catalyst activity
Controlled terms:Binary alloys - Catalysis - Catalyst selectivity - Catalysts - Catalytic
oxidation - Combustion - Dust - Ionization of gases - Lanthanum alloys - Metals -
Nitrogen compounds - Oxidation - Oxygen - Oxygen vacancies - Rare earths - Sol-gel
process - Sol-gels - Soot - Tin - Tin alloys - Transition metal compounds - Transition
metals - Vacancies
Uncontrolled terms:Catalytic combustion - Intrinsic activities - Oxidation reactions -
Partial substitution - Pyrochlores - Soot particulates - Surface oxygen vacancies -
Uncatalyzed reactions
Classification code:451.1 Air Pollution Sources - 531 Metallurgy and Metallography -
546.2 Tin and Alloys - 547.2 Rare Earth Metals - 802.2 Chemical Reactions - 803
Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.2
Inorganic Compounds - 812.3 Glass - 933.1 Crystalline Solids
Numerical data indexing:Size 3.00e-08m to 6.00e-08m
DOI:10.13227/j.hjkx.201609228
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 60>
Accession number:20172603860962
Title:Pollution Characteristics of NH<inf>4</inf><sup>+</sup>,NO<inf>3</inf><sup>-
</sup>,SO<inf>4</inf><sup>2-</sup>in PM<inf>2.5</inf>and Their Precursor Gases During
2015 in an Urban Area of Beijing
Authors:Ding, Meng-Meng (1); Zhou, Jian-Nan (1); Liu, Bao-Xian (1); Wang, Yan (1); Zhang,
Bo-Tao (1); Shi, Ai-Jun (1); Yang, Dong-Yan (1); Chang, Miao (1)
Author affiliation:(1) Beijing Key Laboratory of Airborne Particulate Matter Monitoring
Technology, Beijing Municipal Environmental Monitoring Center, Beijing; 100048, China
Corresponding author:Liu, Bao-Xian(liubaoxian28@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1307-1316
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Simultaneous measurements of precursor gases
NH<inf>3</inf>,NO,NO<inf>2</inf>,SO<inf>2</inf>and the main water-soluble ions in
PM<inf>2.5</inf>such as sulphate (SO<inf>4</inf><sup>2-</sup>),nitrate
(NO<inf>3</inf><sup>-</sup>) and ammonium (NH<inf>4</inf><sup>+</sup>) (collectively
called SNA)were carried out in the urban area of Beijing during 2015-01 to 2015-12,which
obtained 325 groups of samples. PTFE membrane filters were used to collect particulate
NH<inf>4</inf><sup>+</sup>, NO<inf>3</inf><sup>-</sup>and SO<inf>4</inf><sup>2-</sup>,
followed by the online instruments to collect precursor gases. The pollution
characteristics of the precursor gases and SNA were analyzed and their correlation was
studied. The mean concentrations of NH<inf>3</inf>, NO, NO<inf>2</inf>, SO<inf>2</inf>,
NH<inf>4</inf><sup>+</sup>,NO<inf>3</inf><sup>-</sup>and SO<inf>4</inf><sup>2-</sup>were
21.5, 17.7, 54.3, 14.2, 8.1, 13.5 and 12.7 μg·m<sup>-3</sup>respectively during
the period of monitoring, and SNA accounted for 43.4% of PM<inf>2.5</inf>. The
concentrations of SO<inf>2</inf>,NO<inf>x</inf>and SNA declined compared to 2014. The
concentrations of NO,NO<inf>2</inf>and SO<inf>2</inf>were highest in winter and lowest in
summer. The concentration of NH<inf>3</inf>was higher in summer and lower in autumn; The
concentration and the percentage of NH<inf>4</inf><sup>+</sup>were stable during the four
seasons,both the concentrations and the percentage of NO<inf>3</inf><sup>-</sup>were
lowest in summer. The concentrations of SO<inf>4</inf><sup>2-</sup>was highest in winter
and the percentage was lowest in summer. The ratio of ([NO<inf>3</inf><sup>-</sup>]+2
[SO<inf>4</inf><sup>2-</sup>]) and NH<inf>4</inf><sup>+</sup>was 0.97 during the whole
year, showing that anions mainly existed in the form of NO<inf>3</inf><sup>-</sup>and
SO<inf>4</inf><sup>2-</sup>. In summer, the ratio of [NO<inf>3</inf><sup>-</sup>]+2
[SO<inf>4</inf><sup>2-</sup>] and [NH<inf>4</inf><sup>+</sup>] was slightly higher than
1.0, which was the reason why NO<inf>3</inf><sup>-</sup>was bound to Ca<sup>2+</sup>,
Mg<sup>2+</sup>and Na<sup>+</sup>besides NH<inf>4</inf><sup>+</sup>. With the increase of
pollution, the mass concentration of precursor gases and SNA increased dramatically,
among which NO<inf>x</inf>increased most rapidly, and SO<inf>2</inf>decreased from severe
pollution to serious pollution. The contribution rate of NH<inf>4</inf><sup>+</sup>was
maintained at a relatively stable level. SO<inf>4</inf><sup>2-</sup>had a higher
contribution when the pollution level was lower, whereas the concentration of
NO<inf>3</inf><sup>-</sup>was higher than others and contributed most to
PM<inf>2.5</inf>in heavy pollution. Heterogeneous transformation on the surface of
particulate matter played a more important role in the formation of SO<inf>4</inf><sup>2
-</sup>and NO<inf>3</inf><sup>-</sup>. The correlations between NO<inf>3</inf><sup>-
</sup>, NO<inf>2</inf>and NO,NH<inf>4</inf><sup>+</sup>and
NH<inf>3</inf>,SO<inf>4</inf><sup>2-</sup>and SO<inf>2</inf>were significant at the
confidence level of 0.01. SO<inf>4</inf><sup>2-</sup>had negative correlation with
SO<inf>2</inf>, and NO<inf>3</inf><sup>-</sup>had positive correlation with
NO<inf>2</inf>. Compared with NH<inf>3</inf>, the NH<inf>4</inf><sup>+</sup>concentration
was more obviously affected by acid gases NO<inf>2</inf>, SO<inf>2</inf>. © 2017,
Science Press. All right reserved.
Number of references:37
Main heading:Gases
Controlled terms:Correlation methods - Nitrogen compounds - Nitrogen oxides - Pollution
Uncontrolled terms:Mass concentration - Mean concentrations - Negative correlation - On-
line instruments - Particulate Matter - Positive correlations - Simultaneous measurement
- Urban areas
Classification code:804.2 Inorganic Compounds - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 4.34e+01%
DOI:10.13227/j.hjkx.201607005
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 61>
Accession number:20172603860963
Title:Pollution Characteristics of PCDD/Fs in Ambient Air and Exposure Risk Assessment
Around a Municipal Solid Waste Incinerator in Beijing
Authors:Qi, Li (1); Ren, Yue (1); Liu, Ai-Min (1); Huang, Ye-Ru (1); Zhao, Zhen (2);
Wang, Jiang (2); Li, Hong (2)
Author affiliation:(1) State Environmental Protection Key Laboratory of Dioxin Pollution
Control, National Research Center for Environmental Analysis and Measurement, Beijing;
100029, China; (2) Beijing Chaoyang District Environmental Protection Monitoring Station,
Beijing; 100125, China
Corresponding author:Huang, Ye-Ru(yrhuang@cneac.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1317-1326
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Ambient air was sampled and analyzed around a municipal solid waste incinerator
(MSWI) in Beijing from April 2014 to January 2015 to investigate the concentrations,
profiles and seasonal variations of PCDD/Fs in the region using HRGC-HRMS technique. The
mass concentrations and TEQ of 2,3,7,8-substituted PCDD/Fs in the air samples ranged from
8.9 to 140 pg·m<sup>-3</sup>and from 0.11 to 1.8 pg·m<sup>-3</sup>,
respectively. The concentration values at 4 sampling sites in haze day in autumn and all
7 sampling sites in winter were higher than the ambient air standard of 0.6
pg·m<sup>-3</sup>for dioxins regulated in Japan. 1,2,3,4,6,7,8-HpCDF and OCDD
dominated PCDD/Fs in all the samples for all four seasons with average contribution
fractions of 20.5% and 14.0%, respectively, while 2,3,4,7,8-PeCDF was the dominant
congener contributing to TEQ (43.3%). The spatial distribution basically exhibited a
trend that the concentrations at all sites were comparable and not related to the
distances from the source. Seasonal variation showed obviously higher concentration in
winter than the other three seasons, which may attribute to the high concentration of
ambient particulate matter due to domestic heating and worse atmospheric dispersion that
occurred in winter. The homologue and congener profiles of PCDD/Fs in the air samples
differed from those of the flue gas emission from the MSWI, consistent with the principle
component analysis results. Dioxin inhalation exposure dose estimation showed that the
dioxin inhalation exposure risk of residents living in the studied area was at a
relatively safe level [0.060-0.224 pg·(kg·d)<sup>-1</sup>]. However, the
dioxin inhalation exposure risk in heavily polluted seasons still needs great concerns.
© 2017, Science Press. All right reserved.
Number of references:40
Main heading:Municipal solid waste
Controlled terms:Atmospheric movements - Organic pollutants - Principal component
analysis - Refuse incinerators - Risk assessment - Risk perception - Solid wastes - Waste
incineration
Uncontrolled terms:Ambient air - Inhalation exposure - Municipal solid waste incinerator
- PCDD/Fs - Principle component analysis - Seasonal variation
Classification code:443.1 Atmospheric Properties - 452 Municipal and Industrial Wastes;
Waste Treatment and Disposal - 452.4 Industrial Wastes Treatment and Disposal - 804.1
Organic Compounds - 914.1 Accidents and Accident Prevention - 922.2 Mathematical
Statistics
Numerical data indexing:Percentage 1.40e+01%, Percentage 2.05e+01%, Percentage 4.33e+01%
DOI:10.13227/j.hjkx.201608147
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 62>
Accession number:20172703864522
Title:Pollution Characteristics and Nitrification and Denitrification Potential of
Superficial Sediments from Streams in an Urban-Rural Fringe
Authors:Qin, Ru-Bin (1); Li, Ru-Zhong (1); Gao, Su-Di (2); Zhang, Rui-Gang (3)
Author affiliation:(1) School of Resources and Environmental Engineering, Hefei
University of Technology, Hefei; 230009, China; (2) Collage of Civil and Environmental
Engineering, Anhui Xinhua University, Hefei; 230088, China; (3) School of Civil
Engineering, Hefei University of Technology, Hefei; 230009, China
Corresponding author:Li, Ru-Zhong(Lrz1970@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:936-945
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:From May 2015 to June 2016, seasonal sediment samples were collected from three
headwater streams in the urban-rural fringe of Hefei, Chaohu Lake basin, China. The
nitrogen pollution characteristics of sediments were preliminarily investigated for the
three streams. Three metrics, that is, potential nitrification rate (PNR), areal
nitrification rate (ANR) and rate of denitrification were quantitatively determined, and
their spatial and temporal variations were discussed subsequently. Moreover, the
relationship between PNR, ANR or denitrification rate and a list of environmental factors
was discriminated by using partial least-squares regression analysis. Results showed
that: (1) Guanzhenhe Distributary was the most polluted stream with a mean content of
4516.39 mg·kg<sup>-1</sup>for TN, which was 2.56 and 1.36 times higher than those
of Modian Stream and Taochong Stream, respectively. Similarly, the highest values for
NH<inf>4</inf><sup>+</sup>-N and NO<inf>3</inf><sup>-</sup>-N emerged in Guanzhenhe
Distributary while the lowest existed in Modian Stream. (2) There were distinct seasonal
variations in PNR and ANR, namely, the maximum values emerged in summer, minimum in
winter, and almost equivalent in spring and autumn. And the arrangement in order for PNR
and ANR was Taochong Stream>Modian Stream>Guanzhenhe Distributary. (3) The mean
rate of denitrification in Guanzhenhe Distributary was 10.59 mg·(kg·h)
<sup>-1</sup>, which was 3.16 and 1.75 times higher than those in Modian Stream and
Taochong Stream, respectively. In addition, both denitrification rate and denitrification
activity in summer were higher than those in spring for the three streams. (4) According
to the variable importance plot (F<inf>VIP</inf>), ANR, PNR and rate of denitrification
were almost all significantly correlated with such physical and chemical factors as pH,
OM, NH<inf>4</inf><sup>+</sup>-N, NO<inf>3</inf><sup>-</sup>-N, TN and TP in sediments
for the three streams. © 2017, Science Press. All right reserved.
Number of references:32
Main heading:River pollution
Controlled terms:Denitrification - Nitrification - Nitrogen - Pollution - Regression
analysis - Rural areas - Sediments
Uncontrolled terms:Nitrification and denitrification - Nitrification rates - Nitrogen
pollution - Partial least squares regression analysis - Potential nitrification - Spatial
and temporal variation - Superficial sediments - Urban-rural fringes
Classification code:453 Water Pollution - 483 Soil Mechanics and Foundations - 802.2
Chemical Reactions - 804 Chemical Products Generally - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201609096
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 63>
Accession number:20172703864559
Title:Response of Soil Nitrifier and Denitrifier Community and Activity to Elevated
Atmospheric CO<inf>2</inf>Concentration and Temperature
Authors:Liu, Yuan (1); Wang, Guang-Li (1); Li, Lian-Qing (2); Pan, Gen-Xing (2)
Author affiliation:(1) College of Life Science, Huaibei Normal University, Huaibei;
235000, China; (2) College of Resources and Environmental Sciences, Nanjing Agricultural
University, Nanjing; 210095, China
Corresponding author:Wang, Guang-Li(wanf-3344@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1245-1252
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Elevated atmospheric CO<inf>2</inf>concentration and temperature may affect
nitrifiers and denitrifiers which are related to soil N turnover. A climate change
experiment was conducted in the rice-wheat rotation ecosystem. This study was used to
investigate effects of elevated CO<inf>2</inf>and temperature on soil microbial community
structure, as well as abundance and activity of nitrifiers and denitrifiers. The results
showed that no change in the abundance of ammonia-oxidizing bacteria (AOB) and
denitrifier was observed at the tillering stage, however at the later stages, elevated
CO<inf>2</inf>alone significantly increased the abundance of ammonia-oxidizing archaea
(AOA) and denitrifier but there were no changes under CW treatment. The analysis of T-
RFLP profiles showed that elevated CO<inf>2</inf>and temperature had no obvious effect on
community structure of AOA, AOB or denitrifier, but altered diversity index (H') of AOA
and denitrifier. Moreover, elevated CO<inf>2</inf>alone significantly increased
nitrifying rate at the ripening stage. Elevated CO<inf>2</inf>and temperature did not
result in significant change in denitrifying rate at each single stage. These results
suggested that effects of elevated CO<inf>2</inf>and temperature on microbial community
were different among the tillering, heading and ripening stages, and functional
microorganism responded differently to multiple climate change treatments. © 2017,
Science Press. All right reserved.
Number of references:28
Main heading:Atmospheric temperature
Controlled terms:Ammonia - Bacteria - Carbon dioxide - Climate change - Denitrification -
Microorganisms - Nitrification - Social sciences - Soils
Uncontrolled terms:Ammonia oxidizing bacteria - Ammonia-oxidizing archaea - Atmospheric
CO - Elevated temperature - Winter wheat
Classification code:443.1 Atmospheric Properties - 461.9 Biology - 483.1 Soils and
Soil Mechanics - 802.2 Chemical Reactions - 804.2 Inorganic Compounds - 971 Social
Sciences
DOI:10.13227/j.hjkx.201608139
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 64>
Accession number:20172703864552
Title:Pollution Characteristics of Chlorobenzenes in Organs of Fish from Typical Epidemic
Areas of Schistosomiasis Prevalence
Authors:Li, Kun (1); Zhao, Gao-Feng (1); Zhou, Huai-Dong (1); Zhang, Pan-Wei (1); Liu,
Qiao-Na (1); Zhao, Xiao-Hui (1); Li, Dong-Jiao (1); Ren, Min (1); Zhao, Dan-Dan (1)
Author affiliation:(1) China Institute of Water Resources and Hydro-power Research,
Beijing; 100038, China
Corresponding author:Zhao, Gao-Feng(zhaogf@iwhr.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1182-1188
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Sixty-eight fish samples were collected from typical epidemic areas of
schistosomiasis prevalence. The contents of 12 CB congeners in fish samples were measured
using GC/MS technique. The results indicated that 1,3-DIC, 1,4-DIC, 1,2-DIC and HCB were
the most predominant CB congeners in the samples from the studying area. The source of
HCB was PCP (pentachlorophenol), which was used to control the schistosomiasis
prevalence, used in study area. And DIC came from the degradation of HCB and the articles
of daily use. The geometric average of CBs in muscle ranged from 2731.50 to 7811.23
ng·g<sup>-1</sup>lipid weight, while the summarized concentration of CBs in fish
gonads, brains, kidneys, livers ranged from 2557.89 to 4640.05 ng·g<sup>-
1</sup>lipid weight, 2423.18 to 3329.61 ng·g<sup>-1</sup>lipid weight, 1628.05 to
4667.76 ng·g<sup>-1</sup>lipid weight and 704.92 to 1086.96 ng·g<sup>-
1</sup>lipid weight, respectively. When compared to other studies in China and other
countries, the concentrations of CBs in these fish samples were at a relatively high
level. © 2017, Science Press. All right reserved.
Number of references:22
Main heading:Fish
Controlled terms:Electric circuit breakers - Epidemiology - Pollution
Uncontrolled terms:Daily use - Epidemic areas of schistosomiasis prevalence - Fish
samples - Source - Study areas
Classification code:461.7 Health Care
DOI:10.13227/j.hjkx.201609094
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 65>
Accession number:20172703864514
Title:Assessment of PM<inf>2.5</inf>Pollution Mitigation due to Emission Reduction from
Main Emission Sources in the Bejing-Tianjin-Hebei Region
Authors:Wu, Wen-Jing (1); Chang, Xing (1); Xing, Jia (1); Wang, Shu-Xiao (1, 2); Hao,
Ji-Ming (1, 2)
Author affiliation:(1) State Key Joint Laboratory of Environment Simulation and Pollution
Control, School of Environment, Tsinghua University, Beijing; 100084, China; (2) State
Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex,
Beijing; 100084, China
Corresponding author:Wang, Shu-Xiao(shxwang@tsinghua.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:867-875
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study chose two months (January and July) in 2012 which represent winter
and summer respectively, to assess the effects of fine particle (PM<inf>2.5</inf>)
pollution elimination due to emission control from different sectors in the Bejing-
Tianjin-Hebei region by using CMAQ/2D-VBS modeling system. The results showed that,
industrial emissions contributed most to PM<inf>2.5</inf>pollution in the Beijing-
Tianjin-Hebei region, followed by domestic emissions, while the contribution of per ton
emission reduced for industrial sectors subject to domestic sectors. The total
contribution and contribution of per ton emission reduced for transportation and power
plant were both at low level. Among industrial sectors, the iron, steel and metallurgical
industry was the greatest contributor, followed by cement industry, industrial boiler,
coking industry, lime and bricks industry and chemical industry. It was found that the
contribution of each emission source had significant association with its primary
PM<inf>2.5</inf>emission level. The control of NO<inf>x</inf>emissions would promote the
formation of PM<inf>2.5</inf>, and atmospheric vertical diffusion effect was weak during
wintertime in the Beijing-Tianjin-Hebei region. As a result, emission control of various
sectors was universally more effective for PM<inf>2.5</inf>pollution mitigation in summer
than in winter. Emission control in summer was significantly more effective for
transportation, powerplant, cement industry, industrial boiler and lime and bricks
industry. Due to considerable emissions in heating season, domestic emissions showed more
contribution in winter. Agricultural sources showed greater contribution per emission
reduction in winter by the reason of substantial emissions from straw open burning during
this time. With respect to a certain reduction ratio of emission, future control
strategies should pay more attention to industrial emissions, especially to the primary
PM<inf>2.5</inf>emissions. In details, priorities should be given to NO<inf>x</inf>and
SO<inf>2</inf>emission control for iron, steel and metallurgical industry,
NO<inf>x</inf>emission control for cement industry and SO<inf>2</inf>and NMVOC emission
control for coking industry. Besides, domestic emission control should also be taken into
consideration, and it will be more effective in winter. © 2017, Science Press. All
right reserved.
Number of references:38
Main heading:Industrial emissions
Controlled terms:Boiler control - Boilers - Brick - Cement industry - Cements - Chemical
industry - Emission control - Gas emissions - Iron and steel industry - Lime -
Metallurgy - Nitrogen oxides - Pollution - Pollution control
Uncontrolled terms:Agricultural sources - Beijing-tianjin-hebei regions - CMAQ/2D-VBS -
Control strategies - Emission reduction - Emissions reduction - Industrial boilers -
Metallurgical industry
Classification code:412.1 Cement - 414.2 Brick Materials - 451.1 Air Pollution Sources
- 451.2 Air Pollution Control - 531.1 Metallurgy - 545 Iron and Steel - 614 Steam
Power Plants - 614.1 Steam Power Plant Design and Construction - 804.2 Inorganic
Compounds - 805 Chemical Engineering, General
DOI:10.13227/j.hjkx.201607191
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 66>
Accession number:20172703864536
Title:Oxidation Destruction of Cu(CN)<inf>3</inf><sup>2-</sup>by Persulfate
Authors:Wang, Yun-Fei (1, 2); Li, Yi-Bing (1); Wang, Yan-Bin (2); Qi, Fan-Jing (1); Zhao,
Kai (1); Tian, Shi-Chao (1); Guo, Tao (2); Guan, Wei (2); Zhao, Xu (2)
Author affiliation:(1) School of Civil and Transportation, Hebei University of
Technology, Tianjin; 300401, China; (2) State Key Laboratory of Environmental Aquatic
Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences,
Beijing; 100085, China
Corresponding author:Zhao, Xu(zhaoxu@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1061-1066
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In recent years, cyanide contamination problem is becoming more and more
serious. Cyanides widely occur in the wastewater from metallurgical industry and
electroplating industry. The efficiency for cyanides removal of conventional physical and
chemical methods is not very satisfactory. Therefore, it is urgent to develop highly
efficient and environmental friendly methods for the removal of cyanides. As an
environmental-friendly oxidant, potassium persulfate is widely used in the treatment of
organic pollutants. The destruction of Cu(CN)<inf>3</inf><sup>2-</sup>was investigated by
homogeneous K<inf>2</inf>S<inf>2</inf>O<inf>8</inf>under alkaline conditions, and the
reaction mechanism was analyzed. The effects of the amount of
K<inf>2</inf>S<inf>2</inf>O<inf>8</inf>and the ratio of Cu<sup>+</sup>/CN<sup>-</sup>on
the degradation of CN<sup>-</sup>were studied. With the increase of
K<inf>2</inf>S<inf>2</inf>O<inf>8</inf>dose, the rate of CN<sup>-</sup>oxidation was
accelerated. The removal efficiency of CN<sup>-</sup>reached 89.6% after 60 min of
reaction in the presence of 2 mmol·L<sup>-
1</sup>K<inf>2</inf>S<inf>2</inf>O<inf>8</inf>. Oxidation of CN<sup>-</sup>was
accelerated with Cu<sup>+</sup>/CN<sup>-</sup>increasing from 2.0 to 5.0. Cu<sup>
+</sup>was oxidized to Cu<sup>2+</sup>and copper oxide was formed during the reaction.
The reactive radicals were analyzed using electron spin resonance and radical quenching
experiments, and the results indicated that both radicals oxidation pathway and non-
radical oxidation pathway were responsible for the removal of Cu(CN)<inf>3</inf><sup>2-
</sup>by K<inf>2</inf>S<inf>2</inf>O<inf>8</inf>. © 2017, Science Press. All right
reserved.
Number of references:27
Main heading:Copper compounds
Controlled terms:Alkalinity - Copper - Cyanides - Efficiency - Electroplating shops -
Magnetic moments - Metallurgy - Organic pollutants - Oxidation - Potassium
Uncontrolled terms:Copper complexes - Electroplating industry - Environmental friendly
methods - Environmental-friendly - Metallurgical industry - Potassium persulfate -
Radical oxidation - Sulfate radicals
Classification code:402.1 Industrial and Agricultural Buildings - 531.1 Metallurgy -
544.1 Copper - 549.1 Alkali Metals - 701.2 Magnetism: Basic Concepts and Phenomena -
801.1 Chemistry, General - 802.2 Chemical Reactions - 804.1 Organic Compounds - 804.2
Inorganic Compounds - 913.1 Production Engineering
Numerical data indexing:Percentage 8.96e+01%, Time 3.60e+03s
DOI:10.13227/j.hjkx.201608014
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 67>
Accession number:20172703864553
Title:Effect of Nano Zeolite on Growth, Activity of Antioxidant Enzyme, and Chemical
Fractions and Concentration of Cd in Chinese Cabbage
Authors:Qin, Yu-Li (1); Xiong, Shi-Juan (1); Xu, Wei-Hong (1); Zhao, Wan-Yi (1); Wang,
Wei-Zhong (1); Chen, Yong-Qin (1); Chi, Sun-Lin (1); Chen, Xu-Gen (1); Zhang, Jin-Zhong
(1); Xiong, Zhi-Ting (2); Wang, Zheng-Yin (1); Xie, De-Ti (1)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) College of Resources and Environmental Sciences, Wuhan
University, Wuhan; 430079, China
Corresponding author:Xu, Wei-Hong(xuwei_hong@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1189-1200
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Pot experiment was carried out to investigate the influence of nano zeolite (NZ)
and ordinary zeolite (OZ) on the growth, activities of antioxidant enzyme, Cd fraction
and Cd concentration in two varieties of Chinese cabbage. The results showed that the
activities of SOD, CAT and POD in the shoot and root of two varieties increased, and the
dry weight of shoot and the total dry weight of Chinese cabbage increased by 4.5%-96.5%
and 3.4%-88.4%, respectively. The application of zeolite effectively reduced the Cd
concentration of shoot and root in the two varieties of Chinese cabbage, and the
reduction range increased with the increase of the application amount of zeolite. Under
the low Cd condition (1 mg·kg<sup>-1</sup>Cd), the Cd concentration of edible
parts (shoots) in SD4 variety and XJC3 variety decreased by 1.0%-75.0% and 19.5%-68.9%
(except the Cd<inf>1</inf>+OZ<inf>5</inf>/OZ<inf>10</inf>processing), respectively. Under
the high Cd condition (5 mg·kg<sup>-1</sup>Cd), the Cd concentration of the edible
parts (shoots) in SD4 variety and XJC3 variety decreased by 7.2%-53.2% (except
Cd<inf>5</inf>+OZ<inf>10</inf>processing) and 0.7%-63.0%, respectively. The Cd
concentrations of the edible parts (shoots) in tow varieties of Chinese cabbage in the
nano zeolite treatments decreased by 10.5%-65.7% compared with the ordinary zeolite
treatments. In Cd contaminated soils (1 mg·kg<sup>-1</sup>and 5
mg·kg<sup>-1</sup>Cd),) the total extraction amount of Cd in the edible parts
(shoots) of SD4 variety reduced by 12.4%-68.8% and 13.2%-55.6% (except of Cd<inf>5</inf>
+OZ<inf>5</inf>processing), and the total extraction amount of Cd in the edible parts
(shoots) of XJC3 variety reduced by 9.4%-71.5% and 3.1%-38.7% (except of Cd<inf>1</inf>
+OZ<inf>5</inf>processing), respectively. The application amount of nano zeolite (NZ) and
ordinary zeolite (OZ) was more, the reduction range of the total extraction amount of Cd
in the edible parts (shoots) of two varieties of Chinese cabbage was greater. ©
2017, Science Press. All right reserved.
Number of references:27
Main heading:Pollution
Controlled terms:Antioxidants - Cadmium - Enzyme activity - Enzymes - Extraction - Soil
pollution - Zeolites
Uncontrolled terms:Antioxidant enzyme - Cd concentrations - Cd-contaminated soils -
Chemical fractions - Chinese cabbage - Dry weight - Pot experiment
Classification code:461.9 Biology - 483.1 Soils and Soil Mechanics - 549.3 Nonferrous
Metals and Alloys excluding Alkali and Alkaline Earth Metals - 802.3 Chemical Operations
- 804.2 Inorganic Compounds
Numerical data indexing:Percentage 1.00e+00% to 7.50e+01%, Percentage 1.05e+01% to 6.57e
+01%, Percentage 1.24e+01% to 6.88e+01%, Percentage 1.32e+01% to 5.56e+01%, Percentage
1.95e+01% to 6.89e+01%, Percentage 3.10e+00% to 3.87e+01%, Percentage 3.40e+00% to 8.84e
+01%, Percentage 4.50e+00% to 9.65e+01%, Percentage 7.00e-01% to 6.30e+01%, Percentage
7.20e+00% to 5.32e+01%, Percentage 9.40e+00% to 7.15e+01%
DOI:10.13227/j.hjkx.201608110
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 68>
Accession number:20172703864520
Title:Removal of Volatile Sulfur Odor by the Biotrickling Filter
Authors:Ye, Jie-Xu (1); Miao, Xiao-Ping (2); Zhuge, Lei (1); Zhao, Xiang-Yu (1); Jiang,
Ning-Xin (1); Zhang, Jing-Xiao (3); Chen, Dong-Zhi (1); Chen, Jian-Meng (1)
Author affiliation:(1) College of Environment, Zhejiang University of Technology,
Hangzhou; 310014, China; (2) Environmental Science Research & Design Institute of
Zhejiang Province, Hangzhou; 310007, China; (3) Environmental Protection Bureau of Yuhuan
County in Taizhou City, Yuhuan; 317600, China
Corresponding author:Chen, Dong-Zhi(cdz@zjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:918-923
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The biodegradation of gas-phase mixtrue of dimethyl sulfide (DMS) and 1-
propanethiol (PT) was examined in a biotrickling filter (BTF), inoculated with a
microbial consortium composed of activated sewage sludge, and pure strains of Alcaligenes
sp. SY1 and Pseudomonas putida. S-1. BTF could be successfully started up within only 11
days when the inlet concentrations of DMS and PT were both 50 mg·m<sup>-3</sup>and
EBRT was 30 s, with 90% removal efficiency (RE) of DMS and 100% RE of PT. In the steady
state, the maximum elimination capacities of DMS and PT were 8.7 g·
(m<sup>3</sup>·h)<sup>-1</sup>and 12.4 g·(m<sup>3</sup>·h)<sup>-
1</sup>, respectively. The presence of PT with a concentration up to 51
mg·m<sup>-3</sup>showed an antagonistic removal pattern for DMS, but the opposite
did not occur. Meanwhile, the BTF showed high efficiency in the biodegradation of
H<inf>2</inf>S. When the concentration of H<inf>2</inf>S was as high as 230
mg·m<sup>-3</sup>, the RE of H<inf>2</inf>S could reach 98%. However,
H<inf>2</inf>S showed a declining effect on the removal of DMS when the concentration
exceeded 115 mg·m<sup>-3</sup>. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Biofilters
Controlled terms:Bacteria - Bandpass filters - Biodegradation - Efficiency - Filtration -
Odor removal - Sewage sludge
Uncontrolled terms:1-propanethiol - Biotrickling filters - Dimethyl sulfide -
H<inf>2</inf>S - Mixed wastes
Classification code:452.2 Sewage Treatment - 461.8 Biotechnology - 703.2 Electric
Filters - 802.3 Chemical Operations - 913.1 Production Engineering
Numerical data indexing:Age 3.01e-02yr, Percentage 9.00e+01%, Percentage 9.80e+01%
DOI:10.13227/j.hjkx.201603055
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 69>
Accession number:20171003416426
Title:Mechanism of soil eco-functional stability under pyrene/cadmium simplex and
combined pollution stress
Authors:Chen, Xin-Yao (1); Yang, Hui-Zi (1); Li, Min (2); Niu, Xiao-Cong (1); Su, Yu-Xuan
(1); Zhang, Yuan (1)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Nanjing Institute of Geography
& Limnology, Chinese Acadamy of Sciences, Nanjing; 210008, China
Corresponding author:Zhang, Yuan(yuanzhang_1001@mail.usts.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:352-360
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In current scenario, the soil pollution has become very severe and its effects
on agricultural and ecological security issues cannot be ignored as various contaminants
are discharged into soil. Thus, the soil pollution is exigent and has to be solved. This
research took soil resistance(Rt), resilience (Rl) and stability (Sb) as evaluation
indexes for judging soil quality by exerting different concentration (concentration
ratio) gradient of pyrene (PYR), cadmium (Cd) and pyrene/cadmium (PYR/Cd) combined
pollutants. A sympathetic description was showed from the aspects of microbial activity,
diversity and abundance of soil ecosystem,and the models were constructed to describe the
dose-response relationship between PYR-Sb and Cd-Rt. The research showed that different
types of pollutants had certain inhibition on soil DOC content. In Cd and PYR simplex
pollution, soil microbial mean biomass and colony number decreased with increasing
concentration of pollutants. In PYR/Cd combined pollution, the ratio of PYR and Cd had a
negative correlation with the decreasing rate of DOC and resistance, meanwhile Cd had a
prominent influence on the above-mentioned correlations, in other words, the soil with
higher concentration of Cd had lower DOC decrease rate and resistance, and Cd would have
dominant inhibition effect on microorganisms under PYR/Cd combined pollution. In
addition, this study found the significant correlation of c<inf>PYR</inf>-Sb and
c<inf>Cd</inf>-Rt, and built the binomial forecasting model to describe the dose-response
relationship of c<inf>PYR</inf>-Sb and c<inf>Cd</inf>-Rt. © 2017, Science Press. All
right reserved.
Number of references:25
Main heading:Soil pollution
Controlled terms:Antimony - Cadmium - Ecology - Microorganisms - Pollution - Pyrene -
Soils
Uncontrolled terms:Dose response - Dose response relationships - Ecological security -
Forecasting modeling - Microbial activities - Negative correlation - Soil microbes - Soil
stability
Classification code:454.3 Ecology and Ecosystems - 461.9 Biology - 483.1 Soils and
Soil Mechanics - 546.4 Antimony and Alloys - 549.3 Nonferrous Metals and Alloys
excluding Alkali and Alkaline Earth Metals - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201604157
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 70>
Accession number:20171003409528
Title:Variation characteristics and health risk assessment of BTEX in the atmosphere of
northern suburb of Nanjing
Authors:Zhang, Yu-Xin (1); An, Jun-Lin (1); Wang, Jian-Yu (1); Wang, Jun-Xiu (1); Shi,
Yuan-Zhe (1); Liu, Jing-Da (1); Liang, Jing-Shu (1)
Author affiliation:(1) Key Laboratory for Aerosol-Cloud-Precipitation of China
Meteorological Administration, Collaborative Innovation Center on Forecast and Evaluation
of Meteorological Disasters, Nanjing University of Information Science & Technology,
Nanjing; 210044, China
Corresponding author:An, Jun-Lin(junlinan@nuist.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:453-460
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:BTEX concentrations were determined by GC5000 online gas chromatography in the
atmosphere of the north suburb of Nanjing in March 2013 to February 2014, using the EPA
human exposure analysis evaluation method for benzene series compounds of volatile
organic compounds (VOCs) in health risk assessment. The results showed that the total
amount of BTEX showed the variation characteristics of
spring>winter>autumn>summer. BTEX concentration was higher in the periods of
07:00-10:00 and 17:00-20:00, and the lowest was detected between 13:00-15:00; At the
weekend, the concentration of BTEX was higher than on the working day. The sources of
BTEX included traffic sources, industrial sources and solvent evaporation. The HQ of BTEX
in all four seasons showed the order of benzene>xylene>ethylbenzene>toluene, and
the HQ risk values were within the safety range in all analysis periods. The distribution
of R value was winter>autumn>spring>summer, and R was higher than the safety
threshold for all the analyses, indicating the existence of carcinogenic risk. ©
2017, Science Press. All right reserved.
Number of references:30
Main heading:Risk assessment
Controlled terms:Benzene - Gas chromatography - Health - Health risks - Safety
engineering - Volatile organic compounds
Uncontrolled terms:BTEX - Carcinogenic risk - Hazard quotients - Industrial sources -
Nanjing - Online gas chromatography - Solvent evaporation - Variation characteristics
Classification code:461.6 Medicine and Pharmacology - 461.7 Health Care - 802.3
Chemical Operations - 804.1 Organic Compounds - 914 Safety Engineering - 914.1
Accidents and Accident Prevention
DOI:10.13227/j.hjkx.201607108
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 71>
Accession number:20171003416398
Title:Seasonal succession characteristics of the Morphologically-based Functional Groups
(MBFG) in deep-water reservoir
Authors:Yang, Yu (1, 2); Lu, Jin-Suo (1, 2); Zhang, Ying (1, 2)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture & Technology, Xi'an; 710055, China; (2) State Key
Laboratory Breeding Base of West Building Technology, Xi'an; 710055, China
Corresponding author:Lu, Jin-Suo(lujinsuo@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:121-128
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Morphologically-based functional groups (MBFG) is the basis for a simple way of
distinguishing the phytoplankon to cluster species according to their similar
morphological traits observed by optical microscope. In order to understand the
application of morphologically-based functional groups (MBFG) in the research on
phytoplankton community structure and variation of deep-water reservoir, as well as the
succession characteristics of algae, the Jinpen Reservoir was studied from August 2011 to
July 2013. Using morphologically-based functional groups (MBFG), the phytoplankton
communities found in the reservoir were classified to functional groups, and the
relations between the morphologically-based functional groups succession and environment
cases were explored with redundancy analysis (RDA) method. The results suggested that
five morphologically-based functional groups were found in the reservoir, namely
II,IV,V,VI,VII; The succession of reservoir algal functional groups had seasonal
characteristics, a variety of Morphologically-based functional groups coexisted in spring
and summer,while reservoir algal functional groups were relatively simple in autumn and
winter; meanwhile, the density of each morphologically-based functional group decreased
with the increase of water depth among the environmental factors, morphologically-based
functional groups IV and VI were respectively affected by temperature; the other water
layers of the reservoir morphologically-based functional groups VI was significantly
affected by TN content. © 2017, Science Press. All right reserved.
Number of references:24
Main heading:Reservoirs (water)
Controlled terms:Phytoplankton
Uncontrolled terms:Deep water reservoirs - Environmental factors - Morphological traits -
Morphologically-based functional groups (MBFG) - Phytoplankton community - Redundancy
analysis (RDA) - Related relationship - Seasonal characteristics
Classification code:441.2 Reservoirs - 471 Marine Science and Oceanography
DOI:10.13227/j.hjkx.201603096
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 72>
Accession number:20171003408643
Title:Sorption of p-nitrophenol by biochars of corncob prepared at different pyrolysis
temperatures
Authors:Ma, Feng-Feng (1); Zhao, Bao-Wei (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Lanzhou
Jiaotong University, Lanzhou; 730070, China
Corresponding author:Zhao, Bao-Wei(zhbw2001@sina.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:837-844
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Sorption of p-nitrophenol (PNP) on biochars prepared from pyrolysis of corncob
in the temperature range of 200-600℃ (CC200-CC600) was investigated. Sorption
mechanisms were discussed. Pyrolysis temperature showed a pronounced effect on properties
of biochars. Decreases in molar H/C, O/C and (O+N)/C ratios were resulted from removal of
H- and O-containing functional groups with increasing pyrolysis temperature, and produced
biochars with low polarity and high aromaticity. The isotherms data were well described
by the Freundlich model. Batch sorption experiments showed that the PNP sorption was
strongly dependent on the properties of biochars. A linear relationship was observed
between sorption parameters (n and K<inf>F</inf>) and properties of biochars such as
molar elemental ratios [H/C, O/C, and (O+N)/C]. The sorption and partition fractions were
quantified by isotherm separation method. PNP sorption on biochar produced at 200℃
was linear due to partition on uncarbonized organic matter in biochar, while PNP sorption
on biochars produced at 300-600℃ was nonlinear and adsorption-dominant for all the
biochars via π-π electron donor-acceptor interaction and pore-filling. © 2017,
Science Press. All right reserved.
Number of references:24
Main heading:Sorption
Controlled terms:Isotherms - Phenols - Pyrolysis
Uncontrolled terms:Bio chars - Corncob - Electron donor acceptors - Linear relationships
- p-Nitrophenol - Pyrolysis temperature - Separation methods - Sorption mechanism
Classification code:802.2 Chemical Reactions - 802.3 Chemical Operations - 804.1
Organic Compounds
DOI:10.13227/j.hjkx.201608101
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 73>
Accession number:20171003409527
Title:Compositions and sources of summertime dicarboxylic acids and related SOA in
PM<inf>2.5</inf>from Mt. Taishan
Authors:Meng, Jing-Jing (1, 2); Hou, Zhan-Fang (1, 2); Liu, Xiao-Di (1); Xing, Ji-Zhao
(1)
Author affiliation:(1) School of Environment and Planning, Liaocheng University,
Liaocheng; 252000, China; (2) State Key Laboratory of Loess and Quaternary Geology,
Institute of Earth Environment, Chinese Academy of Sciences, Xi'an; 710061, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:445-452
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To identify the compositions and sources of dicarboxylic acids and related SOA
in Mt. Taishan, PM<inf>2.5</inf>samples were collected from July to August, 2004, and
analyzed for dicarboxylic acids and related compounds, the tracers of biogenic secondary
organic aerosol (SOA) (Isopene, α-/β-Pinene and β-caryophyllene SOA
tracers), water-soluble organic carbon (WSOC) and inorganic ions. The results showed that
total dicarboxylic acids were (376±189) ng·m<sup>-3</sup>, and
C<inf>2</inf>was the most abundant dicarboxylic acid, followed by C<inf>3</inf>,
C<inf>4</inf>and C<inf>9</inf>. The concentrations of diacids were more abundant than
those in marine regions, but lower than those in urban and other mountainous areas,
indicating that the atmosphere in Mt. Taishan was less influenced by anthropogenic
pollution. C<inf>2</inf>/C<inf>4</inf>, C<inf>3</inf>/C<inf>4</inf>and F/M ratios
indicated that diacids were mostly produced by more intensive photochemical oxidation.
The relative abundance of C<inf>9</inf>to the total diacids,
C<inf>9</inf>/C<inf>6</inf>and C<inf>9</inf>/Ph ratios were higher than those in urban,
marine and mountainous regions, further suggesting that SOA in Mt. Taishan atmosphere
were mostly derived from biogenic sources rather than anthropogenic sources. Compared to
the budgets of model and correlation analysis, it suggested that diacids and related SOA
in Mt. Taishan were mostly derived from photochemical oxidation of local biogenic
sources. © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Organic carbon
Controlled terms:Aerosols - Budget control - Carbon - Carbon inorganic compounds -
Elementary particle sources - Marine pollution
Uncontrolled terms:Anthropogenic pollution - Anthropogenic sources - Correlation analysis
- Dicarboxylic acid - Mt. Taishan - Photochemical oxidation - Secondary organic aerosols
- Water-soluble organic carbon
Classification code:453 Water Pollution - 804 Chemical Products Generally
DOI:10.13227/j.hjkx.201607199
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 74>
Accession number:20171003409562
Title:Effects of Rhodopseudomonas palustris PSB06 on pepper rhizosphere microbial
community structure
Authors:Luo, Lu-Yun (1, 2); Jin, De-Cai (3); Zuo, Hui (4); Zhang, Zhuo (2); Tan, Xin-Qiu
(2); Zhang, De-Yong (2); Lu, Xiang-Yang (1); Liu, Yong (2)
Author affiliation:(1) College of Bioscience & Biotechnology, Hunan Agricultural
University, Changsha; 410128, China; (2) Key Laboratory of Pest Management of
Horticultural Crop of Hunan Province, Institute of Hunan Plant Protection, Hunan Academy
of Agricultural Science, Changsha; 410125, China; (3) Chinese Academy of Sciences Key
Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental
Sciences, Chinese Academy of Sciences, Beijing; 100085, China; (4) Hunan Biological and
Electromechanical Polytechnic, Changsha; 410127, China
Corresponding author:Liu, Yong(haoasliu@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:735-742
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The use of biological pesticide can greatly reduce the soil pollution in the
environment. Exploring the effect of biological pesticide on community diversity and
distribution of pathogenic bacteria will provide theoretic basis for subsequent
researches on biological pesticide micro-ecological control. In order to explore the
microbial ecological mechanism of pepper phytophthora blight, this research compared the
difference of microbial diversity between rhizosphere soil of infected and healthy
plants, and the effects of Rhodopseudomonas palustris PSB06 on microbial diversities of
plant rhizosphere soil were investigated using Illumina MiSeq sequencing technology. The
results showed that there was less difference in the microbial diversity from the same
soil between the seventh day and the fourteenth day. The microbial diversity of
rhizosphere soil of healthy plants was higher than that of rhizosphere soil of infected
plants. The soil sprayed with Rhodopseudomonas palustris PSB06 exhibited the highest
diversity. Moreover, the abundance of Actinomycetes in the rhizosphere soil of healthy
plants was higher than that of infected plants, and the highest abundance of
Actinomycetes was observed in the soil sprayed with Rhodopseudomonas palustris PSB06. The
microbial diversity between rhizosphere soil of infected and healthy plants was
significantly different. Spraying Rhodopseudomonas palustris PSB06 could significantly
alter the microbial community structure of the soil. It could also increase the diversity
of microorganism and the abundance of Actinomycetes in the soil. © 2017, Science
Press. All right reserved.
Number of references:41
Main heading:Soils
Controlled terms:Bacteria - Ecology - Microorganisms - Pesticides - Social sciences -
Soil pollution
Uncontrolled terms:Ecological mechanisms - Microbial community structures - Microbial
diversity - Phytophthora blights - Rhodopseudomonas palustris
Classification code:454.3 Ecology and Ecosystems - 461.9 Biology - 483.1 Soils and
Soil Mechanics - 803 Chemical Agents and Basic Industrial Chemicals - 971 Social
Sciences
DOI:10.13227/j.hjkx.201606059
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 75>
Accession number:20171003409532
Title:Variation analysis of daily PM<inf>2.5</inf>concentrations based on boosted
regression tree: A case study in Changzhou
Authors:Ge, Yue (1); Wang, Ming-Xin (1); Sun, Xiang-Wu (1); Qi, Jin-Di (1)
Author affiliation:(1) College of Environmental & Safety Engineering, Changzhou
University, Changzhou; 213164, China
Corresponding author:Wang, Ming-Xin(wmxcau@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:485-494
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on hourly concentration data from six state-controlled air quality
monitoring stations in urban area of Changzhou from December 2014 to November 2015, the
seasonal variation of PM<inf>2.5</inf>pollution was analyzed, and the contributions of
PM<inf>10</inf>, four kinds of gaseous pollutants and seven meteorological factors to
daily changes of ρ(PM<inf>2.5</inf>) were quantified by boosted regression tree
(BRT). The results showed that: the seasonal differences of PM<inf>2.5</inf>pollution
were significant, the pollution was serious in winter and the pollution duration was
long, while the pollution was light in summer. The spatial distribution of ρ
(PM<inf>2.5</inf>) in four seasons was different, but the six monitoring stations showed
similar trends in each season. Daily average ρ(PM<inf>2.5</inf>) was simulated and
verified by BRT. The correlation coefficient of the training data was 0.981, and the
cross-validation correlation coefficient was 0.957. In addition, the mean deviation
between the simulated values and the measured values was 1.80%, and the standardized mean
error was 10.41%, which showed that the model fitted well. The contribution percentages
of four kinds of impact types (PM<inf>10</inf>, gaseous pollutants, meteorological
factors and regional transport and diffusion) to daily average ρ(PM<inf>2.5</inf>)
changes of four seasons were 23.4%, 28%, 36.2% and 12.6%, respectively. So, the most
significant affecting factor was meteorological condition, followed by secondary
formation, primary emission, and regional transport and diffusion. In the factors with
contribution percentages of more than 5%, the daily average ρ(PM<inf>2.5</inf>) was
positively associated with PM<inf>10</inf>, relative humidity, CO and O<inf>3</inf>, and
was negatively correlated with temperature, SO<inf>2</inf>and mixed layer high. In
addition, the daily average ρ(PM<inf>2.5</inf>) had complex relationships with
atmospheric pressure and NO<inf>2</inf>. For regional transport and diffusion, the
polluted air flow from southeast, west and north had a relatively great negative impact
on PM<inf>2.5</inf>pollution of urban area in Changzhou. © 2017, Science Press. All
right reserved.
Number of references:38
Main heading:Urban transportation
Controlled terms:Air quality - Atmospheric humidity - Atmospheric movements - Atmospheric
pressure - Diffusion - Fog - Forestry - Pollution - Quality control - Regression analysis
- Sulfur dioxide - Trees (mathematics) - Verification
Uncontrolled terms:Boosted regression trees - Changzhou - Contribution percentage -
Seasonal changes - Simulation
Classification code:432 Highway Transportation - 433 Railroad Transportation - 443.1
Atmospheric Properties - 451.2 Air Pollution Control - 721.1 Computer Theory, Includes
Formal Logic, Automata Theory, Switching Theory, Programming Theory - 804.2 Inorganic
Compounds - 913.3 Quality Assurance and Control - 921.4 Combinatorial Mathematics,
Includes Graph Theory, Set Theory - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 1.04e+01%, Percentage 1.26e+01%, Percentage 1.80e+00%,
Percentage 2.34e+01%, Percentage 2.80e+01%, Percentage 3.62e+01%, Percentage 5.00e+00%
DOI:10.13227/j.hjkx.201607067
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 76>
Accession number:20171003409553
Title:Operational performance and microbial community structure in a completely mixed
aeration system
Authors:Wang, Shuo (1, 2, 3); Xu, Qiao (1, 4); Zhang, Guang-Sheng (1, 2, 3); Li, Ji (1,
2, 3)
Author affiliation:(1) School of Environment and Civil Engineering, Jiangnan University,
Wuxi; 214122, China; (2) Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan
University, Wuxi; 214122, China; (3) Jiangsu College of Water Treatment Technology and
Material Collaborative Innovation Center, Suzhou; 215009, China; (4) Ningbo Municipal
Drainage Co., Ltd., Ningbo; 315000, China
Corresponding author:Li, Ji(liji@jiangnan.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:665-671
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A completely mixed aeration system was introduced in domestic sewage treatment,
and the simultaneous nitrification and denitrification process and microbial community
structure were further investigated. The pilot-scale experimental results showed that the
operation of the system was stable and the average chemical oxygen demand (COD),
NH<inf>4</inf><sup>+</sup>-N and total nitrogen (TN) removal were 93.2%, 96.9% and 75.2%,
respectively. The effluent COD, NH<inf>4</inf><sup>+</sup>-N and TN were better than the
standard of level A stipulated by Discharge Standard of Pollutants for Municipal
Wastewater Treatment Plant (GB 18918-2002) in the absence of external carbon source. The
sludge derived from the system showed a significant denitrification capacity and the
denitrification rate was 2.86 times higher than that in the wastewater treatment plant.
In addition, the existence of aerobic denitrifying bacteria in the system was confirmed
by the PCR amplification of genes encoding perplasmic nitrate reductases. The high-
throughput sequencing results revealed that Zoogloea, Thauera and Dechloromonas were
dominant in the completely mixed aeration system. © 2017, Science Press. All right
reserved.
Number of references:23
Main heading:Sewage aeration
Controlled terms:Aerobic bacteria - Bacteria - Carbon - Chemical oxygen demand -
Denitrification - Effluent treatment - Effluents - Microorganisms - Nitrates -
Nitrification - Nitrogen removal - Polymerase chain reaction - Sewage - Sewage pumping
plants - Sewage treatment - Social sciences - Throughput - Wastewater treatment - Water
treatment plants
Uncontrolled terms:Aeration system - Aerobic denitrification - High-throughput sequencing
- Microbial community structures - Municipal wastewater treatment plants - Nitrate
reductase - Simultaneous nitrification and denitrification - Wastewater treatment plants
Classification code:445.1 Water Treatment Techniques - 452 Municipal and Industrial
Wastes; Waste Treatment and Disposal - 461 Bioengineering and Biology - 461.9 Biology -
801.2 Biochemistry - 802.2 Chemical Reactions - 804 Chemical Products Generally -
804.2 Inorganic Compounds - 971 Social Sciences
Numerical data indexing:Percentage 7.52e+01%, Percentage 9.32e+01%, Percentage 9.69e+01%
DOI:10.13227/j.hjkx.201607094
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 77>
Accession number:20171003416390
Title:Diurnal variations of concentration of porewater dissolved CH<inf>4</inf>and
CO<inf>2</inf>in a brackish marsh dominated by cyperus malaccensis and phragmites
australis during neap and spring tidal days in the minjiang river estuary
Authors:Tan, Li-Shan (1); Yang, Ping (1, 2); He, Lu-Lu (1); Huang, Jia-Fang (1, 2, 3);
Hu, Zhi-Qiang (1); Tong, Chuan (1, 2, 3)
Author affiliation:(1) School of Geographical Sciences, Fujian Normal University, Fuzhou;
350007, China; (2) Key Laboratory of Humid Sub-tropical Eco-geographical Process of
Ministry of Education, Fuzhou; 350007, China; (3) Research Centre of Wetlands in
Subtropical Region, Fujian Normal University, Fuzhou; 350007, China
Corresponding author:Tong, Chuan(tongch@fjnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:52-59
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Understanding of diurnal variation of soil porewater dissolved CO<inf>2</inf>and
CH<inf>4</inf>concentration plays an important role in revealing carbon cycling in
estuarine wetlands. During neap and spring tidal days in April and September 2010, the
diurnal variations of soil porewater dissolved CO<inf>2</inf>and
CH<inf>4</inf>concentrations and main impacting factors in a brackish marsh ecosystem
dominated by two species of Cyperus malaccensis (brevifolius) and Phragmites australis
(common reed) were determined in the ShanYutan in the Min River estuary, southeast China.
The results showed that: ① the soil porewater dissolved CH<inf>4</inf>concentration
during the spring and neap tidal days in April and September ranged from 88.20 to 190.74,
53.42 to 141.24, 16.27 to 81.89 and 44.90 to 88.53 μmol·L<sup>-1</sup>,
respectively. The mean of dissolved CH<inf>4</inf>concentration was higher at nighttime
than at daytime during the spring and neap tidal days in April, but the mean of dissolved
CH<inf>4</inf>concentration was higher at daytime than at nighttime during the spring and
neap tidal tidal days in September. ② the soil porewater dissolved
CO<inf>2</inf>concentration during the spring and neap tidal days in September ranged
from 19.33 to 40.1 μmol·L<sup>-1</sup>and 9.69 to 29.96 μmol·L<sup>-
1</sup>, respectively, and the dissolved CO<inf>2</inf>concentration during daytime was
lower than that at night; ③ the mean of dissolved CO<inf>2</inf>concentration was
lower during the inundation period than in the exposed soil surface period, but the mean
of dissolved CH<inf>4</inf>concentration was higher during the inundation period than in
the exposed soil surface period. © 2017, Science Press. All right reserved.
Number of references:31
Main heading:Atmospheric composition
Controlled terms:Carbon dioxide - Dissolution - Estuaries - Floods - Soils - Wetlands
Uncontrolled terms:Dissolved carbon dioxide - Dissolved methane - Diurnal variation -
Estuarine wetlands - Neap and spring tide day - Pore waters
Classification code:407.2 Waterways - 483.1 Soils and Soil Mechanics - 801 Chemistry -
802.3 Chemical Operations - 804.2 Inorganic Compounds
Numerical data indexing:Molar_Concentration 1.93e-02mol/m3 to 4.01e-02mol/m3,
Molar_Concentration 4.49e-02mol/m3 to 8.85e-02mol/m3, Molar_Concentration 9.69e-03mol/m3
to 3.00e-02mol/m3
DOI:10.13227/j.hjkx.201606056
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 78>
Accession number:20172603860972
Title:Community Structure Characteristics of Eukaryotic Planktonic Algae in Liaohe River
Through High-throughput Sequencing
Authors:Wang, Jing-Qi (1, 2, 3); Wang, Shu-Ping (2, 3); Zhang, Yuan (2, 3); Lin, Jia-Ning
(2, 3); Gao, Xin (2, 3); Zang, Xiao-Miao (1, 2, 3); Zhao, Qian (2, 3)
Author affiliation:(1) College of the Environment, Liaoning University, Shenyang; 110036,
China; (2) State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese
Research Academy of Environmental Sciences, Beijing; 100012, China; (3) Laboratory of
Riverine Ecological Conservation & Technology, Chinese Research Academy of
Environmental Sciences, Beijing; 100012, China
Corresponding author:Zhang, Yuan(zhangyuan@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1403-1413
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Eukaryotic phytoplankton plays an important ecological function in river
ecosystem. The 18S rRNA gene V4 variable region of the environmental samples in Liaohe
river was sequenced by using 454 pyrosequencing technology. The reprehensive sequences of
OTUs were annotated, and then the OTUs list was compared to the species list obtained by
microscope observation. The phylogenetic tree was constructed based on the reprehensive
sequences of OTUs and 18S rRNA genes of eukaryotic phytoplankton algae obtained from
GenBank. The community structure characteristics of eukaryotic phytoplankton and its
environmental impact indicators were further studied. In this study, we got 167 901
high-quality sequences of 18S rRNA gene V4 region. These sequences were annotated to 424
OTUs, including 134 eukaryotic algae. The results of the high-throughput sequencing
showed that bacillariophyta and chlorophyta were the dominant groups of the total phyla.
The high-throughput sequencing also revealed the presence of Charophyta, Cryptophyta,
Haptophyta and Chrysophyceae which were not observed by optical microscope. The phylogeny
analysis clustered the Cryptophyta and Pyrroptata at phylum level. The different genera
of Cryptophyta and part of families or genera of Pyrroptata were clustered and
distinguished by phylogeny analysis. The results of RDA showed that NH<inf>4</inf><sup>
+</sup>-N, PO<inf>4</inf><sup>3</sup>-P and NO<inf>3</inf><sup>-</sup>were the most
important environmental factors that affected the community structure. This study
provided a new perspective to understand the diversity, community structure and influence
factors of eukaryotic phytoplankton in Liaohe river. The study also indicated that high-
throughput sequencing has great application potential in investigation of phytoplankton
and the water environment quality assessment in Liaohe river. © 2017, Science Press.
All right reserved.
Number of references:32
Main heading:Algae
Controlled terms:Biology - Ecology - Ecosystems - Environmental impact - Environmental
technology - Genes - Phytoplankton - Rivers - RNA - Social sciences - Throughput
Uncontrolled terms:18s rRNA - Community structures - Diversity - Ecological functions -
Environmental factors - Environmental sample - High-quality sequences - High-throughput
sequencing
Classification code:454 Environmental Engineering - 461.2 Biological Materials and
Tissue Engineering - 461.9 Biology - 971 Social Sciences
DOI:10.13227/j.hjkx.201609133
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 79>
Accession number:20172603860991
Title:Characteristics of Anaerobic Methane Removal Coupled to Fe(III) Reduction in Aged
Refuse
Authors:Wang, Li-Li (1, 2); He, Ting (1, 2); Long, Yan (1, 2); Liu, Chang-Bao (1, 2)
Author affiliation:(1) School of Environment, Jinan University, Guangzhou; 510632, China;
(2) Key Laboratory of Water/Soil Toxic Pollutants Control and Bioremediation of Guangdong
Higher Education Institutes, Jinan University, Guangzhou; 510632, China
Corresponding author:Long, Yan(Tlongyan@jnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1558-1565
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Landfills are the third largest iron reservoir and one of the largest sources of
methane release. Iron, as a kind of transition metal, plays a particularly important role
in environmental biogeochemistry and is closely linked to the biogeochemical cycle of C,
S and N. The aged refuse could be utilized as bio-cover material to improve the removal
of contaminants. Therefore, this work investigated the effect of iron reduction on
anaerobic removal of methane, and the interactions of ferric iron with nitrate and
sulfate in the aged refuse. The columns were operated as landfill bio-covers and
recirculated leachate with addition of FeCl<inf>3</inf>solution. In the experiment, three
columns were used, two of them were used as controls (named as B1 and B3), B1 was fed
with leachate and CH<inf>4</inf>, whereas B3 was only recirculated with leachate adding
FeCl<inf>3</inf>. The treatment B2 was fed with the above two substrates. During the
operation of columns, the contents of CH<inf>4</inf>, CO<inf>2</inf>and N<inf>2</inf>in
the gas, and the concentrations of NO<inf>3</inf><sup>-</sup>, NO<inf>2</inf><sup>-
</sup>, NH<inf>4</inf><sup>+</sup>, SO<inf>4</inf><sup>2-</sup>, Fe(III) and Fe(II) in
the leachate and refuse were respectively determined. The results showed that adding
ferric iron obviously enhanced the removal of methane in anaerobic aged refuse, the
decrease of methane content with time obeyed zero-order kinetic, and the rate of methane
removal(denoted as CH<inf>4</inf>/aged refuse)reached 1.28 mmol·(kg·d)
<sup>-1</sup>. In the anaerobic condition, methane could improve the reduction of Fe(III)
to dissolved, active and bioavailable Fe(II). The active Fe(II) probably coupled to the
transformation of NO<inf>3</inf><sup>-</sup>and SO<inf>4</inf><sup>2-</sup>, and thus
accelerated the removal of NO<inf>3</inf><sup>-</sup>and SO<inf>4</inf><sup>2-</sup>.
© 2017, Science Press. All right reserved.
Number of references:26
Main heading:Methane
Controlled terms:Biogeochemistry - Couplings - Iron - Land fill - Leachate treatment -
Nitrogen compounds
Uncontrolled terms:Aged refuse - Anaerobic conditions - Anaerobic methane -
Biogeochemical cycle - Cover materials - Environmental biogeochemistries - Fe reductions
- Zero order kinetics
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal -
481.2 Geochemistry - 545.1 Iron - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201606032
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 80>
Accession number:20172603860975
Title:Residues of Organochlorine Pesticides (OCPs) in Water and Sediments from Nansha
Mangrove Wetland
Authors:Ding, Yang (1); Huang, Huan-Fang (1); Li, Hui (1); Luo, Jie (1, 2); Zheng, Huang
(1); Sun, Yan (1); Yang, Dan (3); Zhang, Yuan (1); Qi, Shi-Hua (1)
Author affiliation:(1) State Key Laboratory of Biogeology and Environmental Geology,
School of Environmental Studies, China University of Geosciences, Wuhan; 430074, China;
(2) Guangdong Hydrogeology Battalion, Guangzhou; 510510, China; (3) Faculty of
Engineering, China University of Geosciences, Wuhan; 430074, China
Corresponding author:Qi, Shi-Hua(shihuaqi@cug.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1431-1441
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Mangrove wetland plays an important role in coastal environment. A total of 10
surface water samples and 7 surface sediments samples were collected in March, 2015 from
Nansha mangrove wetland, and 8 compounds of organochlorine pesticides (OCPs) were
determined by GC-ECD to investigate residues level, source, and ecological risk of these
compounds in the study region. The result showed concentrations of OCPs in water ranged
from 1.89 to 90.19 ng·L<sup>-1</sup>(mean 30.16 ng·L<sup>-1</sup>), and
concentrations of OCPs in sediments varied from 3.10 to 16.02 ng·g<sup>-1</sup>
(average 8.58 ng·g<sup>-1</sup>). Compared with other estuaries and harbors around
the world, concentrations of OCPs in this study stayed at a median pollution level. The
mean values of distribution coefficient of HCHs and DDTs between water and sediments were
857 and 368, respectively. Sediments in some parts of the area, whose distribution
coefficient was relatively high, may bring water the secondary pollution. Source analysis
indicated that HCHs mainly originated from the application of Lindane, and DDTs
originated from mixed sources of dicofol and technical DDT. Compared with OCPs in water,
OCPs in sediments might contain more historical residual components. OCPs in water had
light ecological risk, but OCPs in sediments posed a potential high risk to mangrove
ecosystem. © 2017, Science Press. All right reserved.
Number of references:50
Main heading:Water pollution
Controlled terms:Ecology - Ecosystems - Pesticides - Pollution - River pollution -
Sediments - Water - Wetlands
Uncontrolled terms:Coastal environments - Distribution coefficient - Mangrove - Mangrove
ecosystems - Nansha - Organochlorine pesticides - Residual components - Secondary
pollution
Classification code:453 Water Pollution - 454.3 Ecology and Ecosystems - 483 Soil
Mechanics and Foundations - 803 Chemical Agents and Basic Industrial Chemicals
Numerical data indexing:Mass_Density 1.89e-09kg/m3 to 9.02e-08kg/m3, Mass_Density 3.02e-
08kg/m3
DOI:10.13227/j.hjkx.201609019
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 81>
Accession number:20172603861002
Title:Effect of Nano Zeolites on pH, CEC in Soil and Cd Fractions in Plant and Soil at
Different Cadmium Levels
Authors:Chi, Sun-Lin (1); Xu, Wei-Hong (1); Xiong, Shi-Juan (1); Wang, Wei-Zhong (1);
Qin, Yu-Li (1); Zhao, Wan-Yi (1); Zhang, Chun-Lai (1); Li, Yan-Hua (1); Li, Tao (1);
Zhang, Jin-Zhong (1); Xiong, Zhi-Ting (2); Wang, Zheng-Yin (1); Xie, De-Ti (1)
Author affiliation:(1) College of Resources and Environmental Sciences, Southwest
University, Chongqing; 400715, China; (2) College of Resources and Environmental
Sciences, Wuhan University, Wuhan; 430079, China
Corresponding author:Xu, Wei-Hong(xuwei_hong@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1654-1666
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Soil incubation experiment and pot experiment were carried out to investigate
the influence of nano zeolite (NZ) and ordinary zeolite (OZ) on the soil pH, cation
exchange capacity, concentration of soil Cd, soil Cd fraction and Cd uptake by Chinese
cabbage when exposed to different Cd pollution levels(1, 5, 10 and 15 mg·kg<sup>-
1</sup>). The results of soil incubation experiment showed that the nano zeolite and
ordinary zeolite dose(5, 10 and 20 g·kg<sup>-1</sup>) increased the soil pH and
cation exchange capacity, and decreased the concentration of soil exchangeable Cd, while
increased the concentration of Cd in carbonate, Fe-Mn oxide, organic matter and residual
fraction. The lowest EX-Cd was observed in the high nano zeolite (20 g·kg<sup>-
1</sup>) treatment. The soil pH and cation exchange capacity was extremely negatively
correlated with the concentration of soil exchangeable Cd(P<0.01), and extremely
positively correlated with the concentration of soil Fe-Mn oxide Cd(P<0.01). The
results of pot experiment showed that the FDC of exchangeable Cd in soil decreased by
6.4%-63.2%, and the FDC of water-extractable and ethnol-extractable Cd in Chinese cabbage
decreased by 2.1%-56% and 11.8%-100% with zeolite application, respectively. Moreover,
the reduction effect of nano zeolite on Cd concentration in soil and plant was better
than that of ordinary zeolite. The FDC of Cd fraction in shoot of Chinese cabbage showed
correlation with the FDC of carbonate Cd and organic matter Cd in soil(P<0.05) when
exposed to 1 mg·kg<sup>-1</sup>Cd pollution. Moreover, correlation was also found
in the FDC of organic matter Cd and residual Cd in soil(P<0.05) under 5
mg·kg<sup>-1</sup>Cd pollution. © 2017, Science Press. All right reserved.
Number of references:38
Main heading:Soil pollution
Controlled terms:Binary alloys - Biogeochemistry - Biological materials - Cadmium -
Cadmium alloys - Cadmium compounds - Electric network topology - Iron alloys - Manganese
- Manganese alloys - Organic compounds - Pollution - Positive ions - Soils - Zeolites
Uncontrolled terms:Cation exchange capacities - Cd concentrations - Chinese cabbage -
Pollution level - Reduction effects - Residual fraction - Soil incubation - Soil pH
Classification code:461.2 Biological Materials and Tissue Engineering - 481.2
Geochemistry - 483.1 Soils and Soil Mechanics - 543.2 Manganese and Alloys - 545.2
Iron Alloys - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth
Metals - 703.1 Electric Networks - 804.1 Organic Compounds - 804.2 Inorganic Compounds
Numerical data indexing:Percentage 1.18e+01% to 1.00e+02%, Percentage 2.10e+00% to 5.60e
+01%, Percentage 6.40e+00% to 6.32e+01%
DOI:10.13227/j.hjkx.201610095
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 82>
Accession number:20172603860974
Title:Nitrate Source Identification and Nitrification-denitrification at the Sediment-
water Interface
Authors:Jin, Zan-Fang (1); Gong, Jia-Lin (1); Shi, Yi-Li (1); Jin, Man-Tong (1); Li,
Fei-Li (1)
Author affiliation:(1) College of Environment, Zhejiang University of Technology,
Hangzhou; 310032, China
Corresponding author:Li, Fei-Li(lifeili@zjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1423-1430
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Identifying nitrate sources and its transformation mechanisms are important for
nitrate pollution control in surface water. The columnar core sediment samples in West
Lake were taken in different seasons. The transformation of nitrogen at the sediment-
water interface was studied using nitrogen and oxygen isotopes, stable isotope analysis
in R (SIAR) and acetylene inhibition method in the West Lake, Hangzhou. The results
showed that the concentration gradient of both NO<inf>3</inf><sup>-</sup>and
NH<inf>4</inf><sup>+</sup>existed at the sediment-water interface. NO<inf>3</inf><sup>-
</sup>concentrations decreased from bottom water to pore water and NO<inf>3</inf><sup>-
</sup>was accumulated in sediments. NH<inf>4</inf><sup>+</sup>concentrations increased
from bottom water to pore water and NH<inf>4</inf><sup>+</sup>was released from
sediments. Nitrate sources in bottom water where nitrification exited were sewage
(manure), soil nitrogen, chemical fertilizer and precipitation. Sewage (manure) was the
major nitrogen contributor (60.8%) in summer. Particularly high δ<sup>15</sup>N
values in pore water indicated that there was strong denitrification at the sediment-
water interface in West Lake. The average nitrification rate and denitrification rate at
the sediment-water interface were 2.85 mmol·(m<sup>2</sup>·d)<sup>-
1</sup>and 23.51 μmol·(m<sup>2</sup>·d)<sup>-1</sup>, respectively. The
sediment-water interface played a role in nitrogen removal process in aquatic
environment. Seasonal and spatial variations of nitrification rates and denitrification
rates were found in this study. Temperature and dissolved oxygen were the main
influential factors for the transformation of nitrogen at the sediment-water interface in
West Lake. © 2017, Science Press. All right reserved.
Number of references:40
Main heading:Water pollution control
Controlled terms:Biochemical oxygen demand - Denitrification - Dissolved oxygen -
Fertilizers - Isotopes - Lakes - Manures - Nitrates - Nitrification - Nitrogen -
Nitrogen fertilizers - Nitrogen removal - Oxygen - Pollution control - Precipitation
(chemical) - River pollution - Sediments - Sewage - Water - Water pollution
Uncontrolled terms:Concentration gradients - Denitrification rate - Nitrification-
denitrification - Nitrogen and oxygen isotopes - Nitrogen removal process - Sediment
water interface - Stable-isotope analysis - Transformation mechanisms
Classification code:452.1 Sewage - 453 Water Pollution - 453.2 Water Pollution Control
- 483 Soil Mechanics and Foundations - 802.2 Chemical Reactions - 802.3 Chemical
Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 821.5
Agricultural Wastes
Numerical data indexing:Percentage 6.08e+01%
DOI:10.13227/j.hjkx.201606116
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 83>
Accession number:20172603860970
Title:Distribution Characteristics of Water Temperature and Water Quality of Fuxian Lake
During Thermal Stratification Period in Summer
Authors:Wang, Lin-Jie (1); Yu, Hui (1); Niu, Yong (1); Niu, Yuan (1); Zhang, You-Lin (2);
Liu, Qian (1); Ji, Zheng-Yuan (3)
Author affiliation:(1) Research Center of Lake Eco-Environment, Chinese Research Academy
of Environmental Sciences, Beijing; 100012, China; (2) Fuxian Lake Administration of Yuxi
Municipality, Yuxi; 653199, China; (3) Environmental Monitoring Station of Yuxi, Yuxi;
653100, China
Corresponding author:Yu, Hui(yuhui@creas.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1384-1392
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to explore the distribution characteristics and change rule in daytime
of the water temperature and water quality of the deep plateau lake Fuxian Lake during
the thermal stratification period in summer, a typical point location was selected
respectively in the south, middle and north of Fuxian Lake in July 2014 to carry out
investigation and observation after stratified sampling at each point location and
continuous stratified sampling of the point location in the north during daytime. The
result showed that ①The distribution of water temperature of Fuxian Lake in summer
had the temperature distribution characteristics of deep lake during stratification
period. The segment from the surface to a depth of 15 meters was epilimnion with a range
of 25.51-22.81℃. The segment from the depth of 15m to 40m was thermocline with a
range of 22.81-14.72℃. The segment below 40m was hypolimnion with a range of 14.72
-13.70℃. The max temperature difference between the surface and the lakebed was
11.8℃, which was smaller than that of lakes in temperate zone during the same
period. The temperature of the lakebed was about 14℃ which was higher than that of
the lakes in temperate zone,which reflected the characteristics of water temperature
stratification of the deep plateau lake Fuxian Lake; ② The water temperature
stratification determined the characteristics of chemical stratification and the
ecological stratification: the pH, DO and conductivity presented the same layered
structure as the distribution of water temperature. What is noteworthy was that the DO
concentration of the lakebed was as low as 2-3mg·L<sup>-1</sup>. As an
oligotrophic lake, the DO became lower and lower at the lakebed of Fuxian Lake, which
indicated that it possibly faced ecological risks. Due to the separation of thermocline,
the nutritive salt accumulative effect appeared in the hypolimnion. Chlorophyll a and
permanganate index had a corresponding response relation with the water temperature
stratification and showed the max value at the upper layer of the lake. ③ During
the thermal stratification period, the water temperature stratification of Fuxian Lake
had a change during daytime. The increased thermal radiation in the noon caused the
thermocline to dive, the strength to increase and the depth to narrow, which
significantly influenced the dynamic distribution of pH, DO, conductivity and chlorophyll
a of the epilimnion and the thermocline. The change rule of TP, TN and permanganate index
during the daytime was not significant. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Lakes
Controlled terms:Chlorophyll - Ecology - Location - Stream flow - Temperature -
Temperature distribution - Thermal stratification - Water quality
Uncontrolled terms:Distribution characteristics - Distribution of water - Dynamic
distribution - Layered Structures - Stratified sampling - Temperature differences -
Vertical distributions - Water temperatures
Classification code:407.2 Waterways - 445.2 Water Analysis - 454.3 Ecology and
Ecosystems - 641.1 Thermodynamics - 804.1 Organic Compounds
Numerical data indexing:Mass_Density 2.00e-03kg/m3 to 3.00e-03kg/m3, Size 1.50e+01m, Size
1.50e+01m to 4.00e+01m, Size 4.00e+01m
DOI:10.13227/j.hjkx.201607165
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 84>
Accession number:20172603860981
Title:Simultaneous Photocatalytic Reduction of Cr(VI) and Oxidation of SSA by Carbon
Nitride
Authors:Li, Li-Li (1, 2); Chen, Cui-Bai (1); Lan, Hua-Chun (2); Liu, Fei (1); An, Xiao-
Qiang (2)
Author affiliation:(1) School of Water Resources and Environment, China University of
Geosciences, Beijing; 100083, China; (2) Key Laboratory of Drinking Water Science and
Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences,
Beijing; 100085, China
Corresponding author:An, Xiao-Qiang(xqan@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1483-1489
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Carbon nitride is a novel nonmetal semiconductor photocatalyst, which has
developed into an ideal environmental treatment material in recent years. Graphite carbon
nitride(g-C<inf>3</inf>N<inf>4</inf>) was prepared through pyrolysis melamine, and the
structure, morphology and optical properties of samples were characterized by X-ray
diffraction(XRD), transmission electron microscopy(TEM) and UV-Vis diffuse reflectance
spectra(UV-Vis DRS). The potential application of g-C<inf>3</inf>N<inf>4</inf>in the
simultaneous photocatalysis reduction of Cr(VI) and oxidation of sulfosalicylic acid(SSA)
was further explored. And the effects of different conditions such as catalyst dosage, pH
and initial concentration ratio of Cr(VI) with SSA on the simultaneous photocatalysis
were also investigated. The results showed that when the catalyst dosage was 0.5
g·L<sup>-1</sup>, pH=2, the initial concentration ratio of Cr (VI) and SSA was
1∶4(10 mg·L<sup>-1</sup>∶40 mg·L<sup>-1</sup>), optimal
simultaneous photocatalysis efficiency was achieved, which was more than 3 times higher
than that of the separated photoreduction or photooxidation reactions. Within 3 hours,
the reduction ratio of Cr(VI) and oxidation ratio of SSA could reach 98.9% and 93.4%,
respectively. The mechanism of simultaneous photocatalysis was discussed. Cr(VI) was
reduced by electrons and SSA was oxidized by the combined function of hole,
O<inf>2</inf><sup>·-</sup>and ·OH under visible light. © 2017, Science
Press. All right reserved.
Number of references:27
Main heading:Carbon nitride
Controlled terms:Catalysis - Catalysts - Chromium compounds - High resolution
transmission electron microscopy - Nitrides - Optical properties - Oxidation -
Photocatalysis - Photooxidation - Transmission electron microscopy - X ray diffraction
Uncontrolled terms:Environmental treatment - G-C<inf>3</inf>N<inf>4</inf> - Initial
concentration - Photocatalysis reduction - Reaction mechanism - Semiconductor
photocatalyst - Sulfosalicylic acid - UV-vis diffuse reflectance spectra
Classification code:741.1 Light/Optics - 741.3 Optical Devices and Systems - 802.2
Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical
Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 5.00e-01kg/m3, Percentage 9.34e+01%, Percentage
9.89e+01%, Time 1.08e+04s
DOI:10.13227/j.hjkx.201609180
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 85>
Accession number:20172603860989
Title:Nitrogen Removal Characteristics and Diversity of Microbial Community in ANAMMOX
Reactor
Authors:Cao, Yan (1); Wang, Tong-Yu (1); Qin, Yu-Jie (1, 2, 3); Han, Bin (1); Ren, Jun-Yi
(1)
Author affiliation:(1) College of Environment and Energy, South China University of
Technology, Guangzhou; 510006, China; (2) The Key Laboratory of Pollution Control and
Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University
of Technology, Guangzhou; 510006, China; (3) Guangdong Provincial Key Laboratory of
Atmospheric Environment and Pollution Control, South China University of Technology,
Guangzhou; 510006, China
Corresponding author:Qin, Yu-Jie(qinyujie@scut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1544-1550
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The volume loading of upflow blanket filter increased from 0.52 kg·
(m<sup>3</sup>·d)<sup>-1</sup>to 2.75 kg·(m<sup>3</sup>·d)<sup>-
1</sup>by improving the influent NH<inf>4</inf><sup>+</sup>-N and NO<inf>2</inf><sup>-
</sup>-N concentrations. The removal efficiency of NH<inf>4</inf><sup>+</sup>-N,
NO<inf>2</inf><sup>-</sup>-N and TN increased from 76.18%, 53.47%, 55.66% to 94.04%,
86.97%, 82.96% respectively. Meanwhile, the microbial community of UBF ANAMMOX reactor
was analyzed by Illumina high-throughput sequencing during the initial and later
operational process. The results indicated that the denitrifying bacteria coexisted in
the reactor. The percentages of Planctomycetes, Proteobacteria and Nitrospirae in the
sludge were 27.9%-39.9%, 1.1%-26.4% and 0.035%-0.188%, respectively. The proportions of
Planctomycetes and Proteobacteria increased from 1.1%, 27.9% in the enrichment stage to
26.4%, 39.9% in the stable operation stage respectively. In addition, Planctomycetes
increased significantly. The proportion of Brocadiacea reached 24.57%. Therefore,
Brocadiacea became the dominant bacteria in the phylum Planctomycete, which contained
Candidatus brocadia. The alpha diversity index and relative abundance of clustering
figure indicated that the diversity of microbial community decreased gradually and the
structure of microbial community changed obviously. © 2017, Science Press. All right
reserved.
Number of references:24
Main heading:Nitrogen removal
Controlled terms:Bacteria - Denitrification - Microorganisms - Nitrogen compounds -
Nitrogen oxides - Wastewater treatment
Uncontrolled terms:ANAMMOX - Anammox bacteria - High-throughput sequencing - Microbial
communities - Upflow blanket filter
Classification code:452.4 Industrial Wastes Treatment and Disposal - 461.9 Biology -
802.2 Chemical Reactions - 804.2 Inorganic Compounds
Numerical data indexing:Percentage 1.10e+00%, Percentage 2.46e+01%, Percentage 2.64e+01%,
Percentage 2.79e+01%, Percentage 2.79e+01% to 3.99e+01%, Percentage 3.50e-02% to 1.88e-
01%, Percentage 3.99e+01%, Percentage 5.35e+01% to 9.40e+01%, Percentage 7.62e+01%,
Percentage 8.30e+01%, Percentage 8.70e+01%
DOI:10.13227/j.hjkx.201610081
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 86>
Accession number:20172603861008
Title:Microbial Community Structure and Diversity in Cellar Water by 16S rRNA High-
throughput Sequencing
Authors:Yang, Hao (1, 2); Zhang, Guo-Zhen (1, 2); Yang, Xiao-Ni (3); Wu, Fu-Ping (1, 2);
Zhao, Wei (1, 2); Zhang, Hong-Wei (1); Zhang, Xiang (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Lanzhou
Jiaotong University, Lanzhou; 730070, China; (2) Engineering Research Center for Cold and
Arid Regions Water Resource Comprehensive Utilization, Ministry of Education, Lanzhou;
730070, China; (3) College of Natural Resources and Environment, Gansu Agricultural
University, Lanzhou; 730070, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1704-1716
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study was aimed to explore the bacterial diversity of cellar water as well
as to study the relationship between the bacterial diversity and environmental factors.
The MiSeq high-throughput sequencing was used to analyze and compare the bacterial
diversity and community composition of samples from different cellar water samples.
Overall 1 605 optimized reads were obtained from four samples based on high-throughput
sequencing of the V4 region of the 16S rRNA gene. Bacterial species detected in these
samples covered 22 phyla, 42 classes, 71 orders, 115 families, 146 genera. Analysis
showed that the bacterial diversity was very high in these samples, and there were
differences among different samples. The distribution characteristics of the dominant
bacteria showed patterns of a large number of rare species and a few common types.
Taxonomic assignment analysis indicated that Bacteroidetes, Proteobacteria,
Actinobacteria, Verrucomicrobia, OD1 dominated in the Cellar water, and accounted for
87.1% to 94.8% at phylum level. The predominant groups were Actinobacteria,
Acidimicrobiia, Cytophagia, Flavobacteriia, Sphingobacteriia, α-Proteobacteria,
β-Proteobacteria, γ-Proteobacteria, Opitutae, Verrucomicrobiae, Pedosphaerae
and ZB2 at class level. At genus level Rhodobacter, Dechloromonas, Flavobacterium,
Acinetobacter, Comamonas, Pseudomonas, Hydrogenophaga, et al were the abundant taxa,
which were mainly denitrifying bacteria and heterotrophic nitrification-aerobic
denitrification bacteria. The result of RDA suggested that the influences of different
environmental factors on different microbes were different. Bacterial community II had
significant positive correlation with UV<inf>254</inf>, permanganate index,
BOD<inf>5</inf>, and Bacterial community III had significant positive correlation with
TN, NO<inf>2</inf><sup>-</sup>-N, NO<inf>3</inf><sup>-</sup>-N, TP, NH<inf>4</inf><sup>
+</sup>-N. This research should deepen the understanding on microbial community in Cellar
water, and provide references for the association of bacterial composition and diversity
with environmental factors. © 2017, Science Press. All right reserved.
Number of references:45
Main heading:Bacteria
Controlled terms:Aerobic bacteria - Denitrification - Microorganisms - Nitrogen compounds
- RNA - Throughput
Uncontrolled terms:Bacterial diversity - Community composition - Denitrifying bacteria -
Distribution characteristics - Heterotrophic nitrification-aerobic denitrifications -
High-throughput sequencing - Microbial community structures - Rain water harvesting
Classification code:461 Bioengineering and Biology - 802.2 Chemical Reactions
Numerical data indexing:Percentage 8.71e+01% to 9.48e+01%
DOI:10.13227/j.hjkx.201608097
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 87>
Accession number:20172703864531
Title:Source Analysis, Spatial Distribution and Pollution Assessment of Heavy Metals in
Sewage Irrigation Area Farmland Soils of Longkou City
Authors:Li, Chun-Fang (1); Wang, Fei (1); Cao, Wen-Tao (1); Pan, Jian (1); Lü,
Jian-Shu (1); Wu, Quan-Yuan (1)
Author affiliation:(1) College of Geography and Environment, Shandong Normal University,
Ji'nan; 250014, China
Corresponding author:Lü, Jian-Shu(lvjianshu@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1018-1027
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Farmland soils in sewage irrigation area at Longkou City were collected, soil pH
together with the heavy metal content were tested. Taking 70 soil points as the study
object, this paper investigated the source of heavy metals in this area based on the
correlation analysis and PCA of multivariate statistical analysis theory. We studied the
spatial variation and distribution characteristics about heavy metals using both the
theory of geostatistics and GIS spatial interpolation method. At last, the heavy metal
pollution was evaluated in the way of Nemerow Index and improved fuzzy evaluation method.
It turned out that, 9 kinds of heavy metal elements in the soil of research area had a
certain degree of enrichment, among them the average of Cd was 3.06 times as high as the
background value, and its enrichment was most severe. The result of Nemerow Index showed
that, the values of comprehensive pollution index of Cu, Cd and Pb respectively were
7.06, 6.10 and 5.54, and they all belonged to high levels of pollution. According to the
results of correlation analysis and principal component analysis, Cu, Zn together with
Pb, Cd were mainly affected by human factors, sewage irrigation was their common
pollution factor, the pollution sources for the first two heavy metals included excessive
use of chemical fertilizers and pesticides in agricultural production and the
accumulation of long time, whereas pollution from northern coal mining and coal gangue
piled up as well as plating, machinery manufacturing and other industrial pollution were
the pollution sources of the latter two elements. Other elements (Co, Cr, Mn, Ni and As)
were mainly influenced by natural factors such as parent material. Comprehensive
evaluation results showed that, among the 70 points, 13 points had moderate pollution, 23
points belonged to light pollution, 28 points were at alert level, 6 points were in the
safe range. From the perspective of spatial distribution, high value areas of heavy metal
contents were mainly concentrated in towns of Zhuyouguan and Xufu. This showed that,
sewage irrigation caused a certain degree of heavy metal pollution to local soil. ©
2017, Science Press. All right reserved.
Number of references:34
Main heading:Copper
Controlled terms:Agriculture - Cadmium - Chemical analysis - Correlation methods -
Electron emission - Farms - Fertilizers - Heavy metals - Irrigation - Lead - Machinery -
Metal analysis - Multivariant analysis - Pollution - Principal component analysis -
Sewage - Soils - Spatial distribution - Statistical methods
Uncontrolled terms:Fuzzy comprehensive evaluation - Geo-statistics - Multivariate
statistical analysis - Pollution sources - Sewage irrigation
Classification code:452.1 Sewage - 483.1 Soils and Soil Mechanics - 531 Metallurgy and
Metallography - 544.1 Copper - 546.1 Lead and Alloys - 549.3 Nonferrous Metals and
Alloys excluding Alkali and Alkaline Earth Metals - 804 Chemical Products Generally -
821 Agricultural Equipment and Methods; Vegetation and Pest Control - 821.3
Agricultural Methods - 921 Mathematics - 922 Statistical Methods - 922.2 Mathematical
Statistics
DOI:10.13227/j.hjkx.201607201
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 88>
Accession number:20172703864550
Title:Effect of PFOA on Oxidative Stress and Membrane Damage of Escherichia coli
Authors:Yang, Meng (1, 2, 3, 4); Li, Yi (1, 2, 3, 4); Ye, Jin-Shao (1, 2, 3, 4); Long,
Yan (1, 2, 3, 4); Qin, Hua-Ming (1, 2, 3, 4)
Author affiliation:(1) School of Environment, Jinan University, Guangzhou; 510632, China;
(2) Key Laboratory of Environmental Pollution and Health of Guangdong Province,
Guangzhou; 510632, China; (3) Guangdong Provincial Research Center for Environment
Pollution Control and Remediation Materials, Guangzhou; 510632, China; (4) Key Laboratory
of Environmental Exposure and Health of Guangzhou, Guangzhou; 510632, China
Corresponding author:Qin, Hua-Ming(huamingqin@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1167-1172
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Perfluorooctanoic acid (PFOA) is widely used in industrial production because of
its strong chemical stabilities and good hydrophobic and oleophobic properties. It was
considered to be a widespread persistent organic pollutant in environment in recent
years. The oxidative stress and membrane damage of Escherichia coli exposed to PFOA were
measured by flow cytometry (FCM) and the toxic mechanism of PFOA was also preliminarily
explored. The results showed that, under the stress of PFOA, the intracellular reactive
oxygen species (ROS) content of E. coli increased, the unsaturation degree of fatty acid
decreased, the malondialdehyde (MDA) content increased, the membrane permeability
increased, the membrane potential decreased, and the activities of Na<sup>+</sup>K<sup>
+</sup>-ATPase and Ca<sup>2+</sup>Mg<sup>2+</sup>-ATPase showed a compensatory increase
first and then decreased. Therefore, owing to the stress of PFOA, the higher
intracellular ROS in E. coli reacted with membrane unsaturated fatty acids by
peroxidation, and then reduced cell membrane fatty acid saturation, accumulated MDA in
cells, and further caused damage to cell membrane, reduced the ATPase activity, and
eventually resulted in inactivation or apoptosis of E. coli. This study provided more
evidence for the further study on environmental ecological toxicology of PFOA. ©
2017, Science Press. All right reserved.
Number of references:29
Main heading:Fatty acids
Controlled terms:Aldehydes - Cell death - Cytology - Escherichia coli - Flow cytometry -
Membranes - Organic pollutants - Unsaturated fatty acids
Uncontrolled terms:ATPase - Cell membrane fatty acid - Industrial production -
Malondialdehyde - Membrane permeability - Perfluorooctanoic acid - Persistent organic
pollutant (POP) - Reactive oxygen species
Classification code:461.9 Biology - 741.3 Optical Devices and Systems - 804.1 Organic
Compounds - 951 Materials Science
DOI:10.13227/j.hjkx.201609001
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 89>
Accession number:20172703864542
Title:Impact of Starvation Conditions on Biological Community Structure in Sulfur
Autotrophic Denitrification Reactor
Authors:Li, Fang-Fang (1, 2); Shi, Chun-Hong (1, 2); Li, Hai-Bo (1); Yuan, Rong-Fang (1);
Ma, Fang-Shu (1)
Author affiliation:(1) College of Energy and Environmental Engineering, Beijing
University of Science and Technology, Beijing; 100083, China; (2) Beijing Key Laboratory
of Resource-Oriented Treatment of Industrial Pollutants, Beijing; 100083, China
Corresponding author:Shi, Chun-Hong(sch.22@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1109-1115
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Sulfur/dolomite and pyrite/dolomite autotrophic denitrification reactors were
applied to treat the secondary effluent of wastewater treatment plant to explore the
removal effect, the changes of microbial community, and recovery time of reactors after
starvation period. It was shown in the results that after 30 d non-water starvation
endurance, the effluent concentrations of NO<inf>3</inf><sup>-</sup>-N in sulfur/dolomite
and pyrite/dolomite reactors increased from 1.78 mg·L<sup>-1</sup>, 11.32
mg·L<sup>-1</sup>to 27.87 mg·L<sup>-1</sup>, 26.56 mg·L<sup>-
1</sup>respectively at the low temperature of 12-14℃. In addition, sulfur/dolomite
and pyrite/dolomite reactors recovered within 5 d and 11 d since restarted and could
maintain a good effect of nitrogen removal at low temperature. MiSeq high throughput
sequencing results showed that the abundance and diversity of the bacterial communities
in starvation period in both reactors were lower than those in recovery period. The
dominating phylum was Proteobacteria in both reactors while the dominating class was
β-Proteobacteria. Thiobacillus was identified as the main genus for denitrification
in sulfur/dolomite reactor. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Effluents
Controlled terms:Denitrification - Effluent treatment - Nitrogen removal - Recovery -
Secondary recovery - Social sciences - Sulfur - Temperature - Throughput - Wastewater
treatment
Uncontrolled terms:Autotrophic denitrification - Community structures - High-throughput
sequencing - Low temperatures - Microbial diversity - Starvation period
Classification code:452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and
Disposal - 511.1 Oil Field Production Operations - 641.1 Thermodynamics - 802.2
Chemical Reactions - 804 Chemical Products Generally - 971 Social Sciences
Numerical data indexing:Mass_Density 1.78e-03kg/m3 to 2.79e-02kg/m3, Mass_Density 2.66e-
02kg/m3
DOI:10.13227/j.hjkx.201609008
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 90>
Accession number:20172703864554
Title:Effect of Different Iron Minerals on Bioaccessibility of Soil Arsenic Using in
vitro Methods
Authors:Zhong, Song-Xiong (1, 2); Yin, Guang-Cai (1); Huang, Run-Lin (1); He, Hong-Fei
(1); Chen, Zhi-Liang (2); Lin, Qin-Tie (1); Wang, Wen-Ke (1)
Author affiliation:(1) School of Environmental Science and Engineering, Guangdong
University of Technology, Guangzhou; 510006, China; (2) South China Institute of
Environmental Science, Ministry of Environmental Protection, Guangzhou; 510665, China
Corresponding author:Chen, Zhi-Liang(chenzhiliang@scies.org)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1201-1208
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To explore the effects of different iron minerals on soil arsenic
bioaccessibility, ferrihydrite, goethite and hematite were used in PBET, SBRC and IVG
in-vitro experiments in this study. The relationship between arsenic bioavailability in
gastric, small intestinal phases and arsenic speciation was also studied. The results
showed that when 1% ferrihydrite was added, arsenic bioavailability in gastric phase was
2.22%, 5.11% and 7.43% by PBET, SBRC and IVG methods, respectively, while in the small
intestinal phase it was 3.39%, 2.33% and 6.18%. At an elevated ferrihydrite dosage of 2%,
significant difference in arsenic bioavailability was observed in both phases
(P<0.05). According to in vitro experiments, the addition of the same amount of
different iron minerals had contributed to the decrease in arsenic bioavailability to
varying extents in contrast with the blank group, in the descending order of ferrihydrite
(F1)>goethite (G1)>hematite (H1) (F2>G2>H2). Total arsenic in exchangeable
(F1) and specifically sorbed (F2) state was found positively correlated with arsenic
bioavailability in gastric phase by PBET, SBRC and IVG methods, the correlation
coefficient of which being r=0.93, P=0.002, r=0.90, P=0.004 and r=0.89, P=0.006,
respectively. It was also found that arsenic bioavailability in gastric phase was
positively correlated with total arsenic in F1 and F2 states by PBET (r=0.94, P=0.001)
and IVG (r=0.87, P=0.009) methods, but no significant correlation was observed by SBRC
method. Additionally, three in vitro experiments showed that amorphous iron bound arsenic
had significant negative correlation with arsenic bioavailability in gastric phase and
small intestinal phase, except that no correlation was found in small intestinal phase by
SBRC method. © 2017, Science Press. All right reserved.
Number of references:42
Main heading:Arsenic
Controlled terms:Biochemistry - Hematite - Iron - Minerals - Stabilization
Uncontrolled terms:Arsenic bioavailability - Arsenic speciation - Bioaccessibility -
Correlation coefficient - In-vitro - Iron minerals - Negative correlation - Total
arsenics
Classification code:482.2 Minerals - 545.1 Iron - 801.2 Biochemistry - 804 Chemical
Products Generally
Numerical data indexing:Percentage 1.00e+00%, Percentage 2.00e+00%, Percentage 2.22e+00%,
Percentage 2.33e+00%, Percentage 3.39e+00%, Percentage 5.11e+00%, Percentage 6.18e+00%,
Percentage 7.43e+00%
DOI:10.13227/j.hjkx.201608107
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 91>
Accession number:20172703864533
Title:Peroxidation of High Algae-laden Water by Ozone: Algae Organic Matter
Transformation and Disinfection By-products Formation
Authors:Zhang, Sai (1); Hu, Xue-Bin (1); Gu, Li (1); Li, Li (1); Guo, Xian-Qiang (2)
Author affiliation:(1) Key Laboratory of Eco-environments in Three Gorges Reservoir
Region, Faculty of Urban Construction and Environmental Engineering, Chongqing
University, Chongqing; 400045, China; (2) China Southwest Architectural Design and
Research Institute Co., Ltd., Shandong Branch, Qingdao; 266073, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1038-1045
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Formation characteristics and transferring feature of nitrogenous/carbonaceous
disinfection by-products have been observed under different ozone dosages and pH
conditions, and essential nature conversion of Algae organic matters has been also
studied concurrently, based on high algae-laden water. The results showed as follows:
reduction of Microcystis aeruginosa could reach 36% at the ozonation concentration of
28.92 mg·L<sup>-1</sup>. Humic acid-like compounds first increased and then
decreased with continuing addition of ozone dosage, whereas soluble microbial products,
fulvic acids and aromatic protein substance all diminished. Low dosage of ozone had
certain effect on control of dichloroacetonitrile (DCAN) and trichloroacetonitrile (TCAN)
formation potential, yet augmented the yield of trichloronitromethane (TCNM) and 1,1,1-
trichloroacetone (1,1,1-TCP) precursors, and N-DBPs formation potential was promoted with
the increase of ozone dosage. Algae removal efficiency was relatively the best under the
acidic condition, meanwhile, UV<inf>254</inf>and DOC increased with the rise of pH,
though the change was not outstanding. Humic acid-like compounds decreased with the rise
of pH; ozonation could degrade the soluble microbial products and the consequence was
affected little by the change of pH. DCAN and TCAN formation potential decreased with the
rise of pH; TCNM formation potential appeared to be the highest when the pH was 10,
whereas the highest 1,1,1-TCP formation potential was found at pH 7. © 2017, Science
Press. All right reserved.
Number of references:38
Main heading:Ozone water treatment
Controlled terms:Algae - Biogeochemistry - Biological materials - Disinfection - Organic
acids - Organic compounds - Ozone - Ozonization - pH - Transmission control protocol
Uncontrolled terms:Disinfection by-product - Disinfection by-products formations -
Fluorescence excitation emission matrix - Formation characteristics - Microcystis
aeruginosa - Nitrogenous disinfection by-products - Soluble microbial products -
Trichloronitromethane
Classification code:461.2 Biological Materials and Tissue Engineering - 723 Computer
Software, Data Handling and Applications - 801.1 Chemistry, General - 801.2
Biochemistry - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.1
Organic Compounds
Numerical data indexing:Mass_Density 2.89e-02kg/m3, Percentage 3.60e+01%
DOI:10.13227/j.hjkx.201608080
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 92>
Accession number:20172703864535
Title:Fenton-like Catalytic Removal of Organic Pollutants in Water by Framework Cu in
Cu-Al<inf>2</inf>O<inf>3</inf>
Authors:Xu, Dan (1); Zhang, Li-Li (2); Liu, Li-Fen (1)
Author affiliation:(1) School of Food and Environment, Dalian University of Technology,
Panjin; 124221, China; (2) Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing; 100085, China
Corresponding author:Zhang, Li-Li(llzhang@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1054-1060
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To address the problem of low activity for Fe-based Fenton-like catalysts at
neutral pH, Cu-Al<inf>2</inf>O<inf>3</inf>Fenton-like catalyst was prepared by a simple
co-precipitation method. The samples were characterized by means of X-ray diffraction
(XRD), X-ray photoelectron spectroscopy (XPS) and diffuse reflectance UV-vis spectra
(UV-vis DRS). The results showed that both Cu<sup>2+</sup>and Cu<sup>+</sup>mainly
existed in the bulk framework of Al<inf>2</inf>O<inf>3</inf>for Cu-
Al<inf>2</inf>O<inf>3</inf>with appropriate Cu doping (lower than 4.77% Cu), forming the
bond of Al-O-Cu, while excessive Cu doping in Al<inf>2</inf>O<inf>3</inf>(e.g. 7.58% Cu)
could result in the occurrence of extraframework Cu species. The Fenton-like catalytic
performance of the prepared samples was evaluated by the degradation of 2-chlorophenol
(2-CP) and Rhodamine B (RhB). The results showed that the catalyst with framework Cu
species had high catalytic activity and stability for the degradation of 2-CP and RhB.
After reaction for 2 h, the degradation rate of 2-CP reached up to 54% over Cu-
Al<inf>2</inf>O<inf>3</inf>(4.77% Cu) in the presence of H<inf>2</inf>O<inf>2</inf>, the
corresponding TOC removal reached 49%, and the Cu release concentration was only 0.0255
mg·L<sup>-1</sup>. However, the existence of extraframework Cu in
Al<inf>2</inf>O<inf>3</inf>would lead to the reduction of the catalytic performance. ESR
analysis showed that ·OH and HO<inf>2</inf><sup>-</sup>/O<inf>2</inf><sup>-
·</sup>were the primary active species. © 2017, Science Press. All right
reserved.
Number of references:26
Main heading:Copper alloys
Controlled terms:Aluminum - Aluminum alloys - Binary alloys - Catalyst activity -
Catalysts - Degradation - Organic pollutants - Photoelectron spectroscopy - Pollution -
Precipitation (chemical) - Water pollution - Water treatment - X ray diffraction - X ray
photoelectron spectroscopy
Uncontrolled terms:2-chlorophenols - Active species - Catalytic performance - Catalytic
removal - Coprecipitation method - Degradation rate - Diffuse reflectance-UV-vis - Fenton
likes
Classification code:445.1 Water Treatment Techniques - 453 Water Pollution - 541.1
Aluminum - 541.2 Aluminum Alloys - 544.2 Copper Alloys - 802.2 Chemical Reactions -
802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804
Chemical Products Generally - 804.1 Organic Compounds
Numerical data indexing:Mass_Density 2.55e-05kg/m3, Percentage 4.90e+01%, Percentage
5.40e+01%, Time 7.20e+03s
DOI:10.13227/j.hjkx.201608058
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 93>
Accession number:20172703864551
Title:Physicochemical Properties and Antibacterial Effect of Silver Nanoparticles: A
Comparison of Environmental and Laboratorial Conditions
Authors:Yi, Jun (1, 2); Cheng, Jin-Ping (1, 2, 3)
Author affiliation:(1) State Key Laboratory of Estuarine and Coastal Research, East China
Normal University, Shanghai; 200062, China; (2) Shenzhen Key Laboratory for the
Sustainable Use of Marine Biodiversity, Research Centre for the Oceans and Human Health,
City University of Hong Kong Shenzhen Research Institute, Shenzhen; 518057, China; (3)
Environmental Science Programs, The Hong Kong University of Science and Technology, Hong
Kong
Corresponding author:Cheng, Jin-Ping(jinpingcheng@gmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1173-1181
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study aimed to understand how the physicochemical properties of silver
nanoparticles (AgNPs) affected its toxicity in the aquatic environment. The morphologies
of oleylamine-coated AgNPs (4 nm) under environmental and laboratory water conditions
were studied under transmission electron microscopy, and the results showed oleylamine-
coated AgNPs formed big aggregates in the environmental water samples after 12 h
equilibration. Dynamic light scattering results also showed that oleylamine-coated AgNPs
had larger hydrodynamic size in all water samples as compared to its primary size (4 nm).
Exposure to oleylamine-coated AgNPs inhibited the growth of Bacillus subtilis (B.
subtilis) and reduced its cell viability in Luria-Bertani (LB) broth and 0.85% NaCl,
respectively. A dose-dependent toxicity of AgNPs in B. subtilis was observed in
laboratorial medium conditions but not in environmental water condition. Low
concentration of AgNPs exhibited lower toxicity in environmental water samples as
compared to that in laboratorial medium conditions. Separating AgNPs from bacterial
suspension through a dialysis membrane enhanced the cell viability of B. subtilis
significantly. In the environmental water samples, the AgNPs-bacteria interaction would
be reduced with the formation of big aggregates by AgNPs, which consequently decreased
its toxicity in aquatic environment. © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Silver
Controlled terms:Aggregates - Bacteriology - Dialysis membranes - High resolution
transmission electron microscopy - Metal nanoparticles - Nanoparticles - Toxicity -
Transmission electron microscopy
Uncontrolled terms:Aquatic toxicity - Bacillus Subtilis - Environmental water samples -
Laboratorial medium conditions - Silver nanoparticles
Classification code:406 Highway Engineering - 461.7 Health Care - 547.1 Precious
Metals - 741.3 Optical Devices and Systems - 761 Nanotechnology
Numerical data indexing:Percentage 8.50e-01%, Size 4.00e-09m, Time 4.32e+04s
DOI:10.13227/j.hjkx.201608182
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 94>
Accession number:20171003409535
Title:Sources and pollution characteristics of antibiotic resistance genes and
conditional pathogenic bacteria in concentrated poultry feeding operations
Authors:Gao, Min (1); Qiu, Tian-Lei (1); Qin, Yu-Cheng (2); Wang, Xu-Ming (1, 3)
Author affiliation:(1) Beijing Key Laboratory of Agricultural Genetic Resources and
Biotechnology, Beijing Agro-Biotechnology Research Center, Beijing Academy of Agriculture
and Forestry Sciences, Beijing; 100097, China; (2) Pinggu Animal Health Inspection of
Beijing, Beijing; 101200, China; (3) Key Laboratory of Urban Agriculture (North),
Ministry of Agriculture, Beijing; 100097, China
Corresponding author:Wang, Xu-Ming(wangxuming@baafs.net.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:510-516
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Concentrated animal feeding operations (CAFOs) is considered a source of
airborne human pathogens and antibiotic resistance genes. This study collected fecal
samples and corresponding air samples from inside and outside atmospheric environments of
layer and broiler feeding operations. We detected the types of 61 genes including five
classes of antibiotics antibiotic resistance genes (23 genes of ampicillin, 23 genes of
tetracycline, 5 genes of quinolones, 5 genes of sulfonamides and 2 genes of
erythromycin), five conditional pathogenic bacteria (Enterococcus, Escherichia coli,
Staphylococcus, Campylobacter and Clostridium perfringens) and class1 integron.
Quantitative real time PCR was used to analyze concentrations of typical genes with
relatively high detection rates. The results indicated that the detection rates of
antibiotic resistance genes were 8, 7, 2, 3 and 2. At the same time, two kinds of
pathogenic bacteria were detected. The detection rates of the target genes in the air
were lower than those of the fecal sample. The total bacterial gene (16S rDNA)
concentration in the air of layer and broiler was 10<sup>6</sup>copies·m<sup>-
3</sup>, and that of the other typical genes was about
10<sup>4</sup>copies·m<sup>-3</sup>. And the outdoor concentration was much lower
than the indoor concentration. The proportions of antibiotic resistance genes and
conditional pathogenic bacteria in the air were higher than those in the fecal samples
and the outdoor proportions were lower than the indoor proportions. Preliminary results
of this study indicated that feces was an important source of antibiotic resistance
genes, conditional pathogenic bacteria and class1 integron. Aerosolization degrees of
genes in feces were different. This study will provide the basic data for both source
tracking of antibiotic resistance genes and pathogens from CAFOs and risk assessment of
pollution of CAFOs in the surrounding air environment. © 2017, Science Press. All
right reserved.
Number of references:34
Main heading:Genes
Controlled terms:Air quality - Antibiotics - Bacteria - Escherichia coli - Feeding -
Pollution - Polymerase chain reaction - Risk assessment - Sulfur compounds
Uncontrolled terms:Antibiotic resistance genes - Atmospheric environment - Bioaerosols -
Clostridium perfringens - Concentrated animal feeding operations - Feeding operations -
Outdoor concentrations - Quantitative real time PCR
Classification code:451.2 Air Pollution Control - 461.2 Biological Materials and Tissue
Engineering - 461.6 Medicine and Pharmacology - 691.2 Materials Handling Methods -
801.2 Biochemistry - 914.1 Accidents and Accident Prevention
DOI:10.13227/j.hjkx.201606162
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 95>
Accession number:20171003409544
Title:Repression of nitrogen and phosphorus release from lakeshore sediment by five
littoral-zone plants
Authors:Yao, Cheng (1); Hu, Xiao-Zhen (1); Lu, Shao-Yong (1); Geng, Rong-Mei (1)
Author affiliation:(1) State Key Laboratory of Environmental Criteria and Risk
Assessment, Research Center of Lake Eco-Environment, Chinese Academy of Environmental
Sciences, Beijing; 100012, China
Corresponding author:Hu, Xiao-Zhen(huxz@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:589-599
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The article researched the effect of Iris pseudacorus L., Paspalum distichum L.,
Leersia hexandra Swartz, Ludwigia peploides and Hydrocotyle vulgaris on the nitrogen and
phosphorus repression in sandy soil from lower reaches of Yangtze River and clay from
stored littoral zone. The result indicated that plants had a significant inhibitory
effect on total phosphorus release from sediment, with concentration in overlaying water
below 0.02 mg·L<sup>-1</sup>in Paspalum distichum L., Hydrocotyle vulgaris, Iris
pseudacorus group, below 0.03 mg·L<sup>-1</sup>in Leersia hexandra Swartz,
Ludwigia peploides group; with release rate below 0.1 d<sup>-1</sup>in Leersia hexandra
Swartz and Ludwigia peploides group, below 0.05 d<sup>-1</sup>in Paspalum distichum L.,
Hydrocotyle vulgaris, Iris pseudacorus group. While the plants were proved to aggravate
total nitrogen release by accumulating in sediment, with concentration in overlaying
water below 0.4 mg·L<sup>-1</sup>in Paspalum distichum and Iris pseudacorus L.
group; with release rate below 0.02 mg·L<sup>-1</sup>. Root weight density, root
length density, root surface area density were major factors, which increased the
proportion of particles in sediment with diameter of below 50 μm, therefore decreased
sediment resuspension against hydraulic disturbance; the root system also enriched total
nitrogen in sediment and absorbed phosphorus from sediment. These five kinds of plants in
terrestrial-aquatic transverse actually repressed nitrogen and phosphorus release from
sediment in two ways mentioned above, Paspalum distichum L. and Iris pseudacorus L.
possessed the best effect due to their developed root system, followed by Leersia
hexandra Swartz and Hydrocotyle vulgaris, and Ludwigia peploides had the least effect.
© 2017, Science Press. All right reserved.
Number of references:22
Main heading:Sediments
Controlled terms:Nitrogen - Phosphorus - Plants (botany)
Uncontrolled terms:Inhibitory effect - Littoral zone - Nitrogen and phosphorus - Root
length density - Root surface area - Root system - Sediment re suspensions - Total
phosphorus
Classification code:483 Soil Mechanics and Foundations - 804 Chemical Products
Generally
Numerical data indexing:Mass_Density 2.00e-05kg/m3, Mass_Density 3.00e-05kg/m3,
Mass_Density 4.00e-04kg/m3, Size 5.00e-05m
DOI:10.13227/j.hjkx.201604237
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 96>
Accession number:20171003416414
Title:Fast start-up of SBAF System Assisted CANON process and the microbial analysis
Authors:Liu, Zhu-Han (1); Yue, Xiu (2); Yu, Guang-Ping (2); Jin, La-Hua (1); Tang, Jia-Li
(2); Ji, Shi-Ming (2)
Author affiliation:(1) School of Environment, Jinan University, Guangzhou; 510632, China;
(2) Shenyang Institute of Automation in Guangzhou, Chinese Academy of Sciences,
Guangzhou; 511458, China
Corresponding author:Jin, La-Hua(profjin@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:253-259
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Long period start-up is one of the main restraining factors of the single-stage
completely autotrophic nitrogen removal over nitrite (CANON) process. This study
investigated the fast start-up of the CANON process initiated by a submerged biological
aerated filter (SBAF) method. With conventional activated sludge from the secondary
sedimentation tank of municipal waste water treatment plants as the seed sludge, the
CANON process was successfully started up after the acclimation of sludge microorganisms
for 48 days under the experimental conditions of (30±2)℃,organic carbon free
and controlled dissolved oxygen(stage I: 0.3-0.5mg·L<sup>-1</sup>; stage II-IV:
0.1-0.2mg·L<sup>-1</sup>), with the maximum removal rates of ammonia nitrogen and
total nitrogen achieved at 99.9% and 86.5%, respectively. The population structure
characteristics of microorganisms in the system were studied using high-throughput
sequencing of 16S rDNA amplicon. The results demonstrated that the two dominant microbial
strains in the system were Proteobacteria and Planctomycetes, accounting for 26.6% and
17.8%, respectively. The major contributors of nitrogen removal were Nitrosomonas in
β-Proteobacteria and Candidatus brocadia in Brocadiae. Through the above
experiments, it was revealed that the investigated SBAF based CANON possesses had the
advantages of fast start-up, efficient biological nitrogen removal and stable operation
process. © 2017, Science Press. All right reserved.
Number of references:24
Main heading:Activated sludge process
Controlled terms:Ammonia - Carbon - Dissolved oxygen - Microorganisms - Nitrogen -
Nitrogen removal - Organic carbon - Seed - Waste treatment - Wastewater treatment -
Water treatment
Uncontrolled terms:16s rDNA sequencing - Ammonia nitrogen - CANON - Microbial populations
- SBAF
Classification code:445.1 Water Treatment Techniques - 452.2 Sewage Treatment - 452.4
Industrial Wastes Treatment and Disposal - 461.9 Biology - 804 Chemical Products
Generally - 821.4 Agricultural Products
Numerical data indexing:Age 1.32e-01yr, Mass_Density 1.00e-04kg/m3 to 2.00e-04kg/m3,
Percentage 1.78e+01%, Percentage 2.66e+01%, Percentage 8.65e+01%, Percentage 9.99e+01%
DOI:10.13227/j.hjkx.201607085
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 97>
Accession number:20171003416392
Title:Fluorescence Spectral Characteristics of Fluorescent Dissolved Organic Matter
(FDOM) in the Surface Sediments from Lihu Lake
Authors:Chen, Jun-Yi (1); Wang, Shu-Hang (1); Jiang, Xia (1); Huang, Xiao-Feng (2); Zhao,
Li (1)
Author affiliation:(1) State Key Laboratory of Environmental Criteria and Risk
Assessment, Chinese Research Academy of Environmental Sciences, Beijing; 100012, China;
(2) Wuxi Taihu Lake Restoration CO., Ltd., Wuxi; 214023, China
Corresponding author:Jiang, Xia(jiangxia@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:70-77
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study investigated the spectral characteristics of fluorescent dissolved
organic matter (FDOM) in sediments of Lihu Lake using three-dimensional excitation-
emission matrix fluorescence spectroscopy (EEMS), and discussed the correlation between
source of FDOM and organic or inorganic nitrogen. The results indicated that the surface
sediments in Lihu Lake consisted of three fluorescence fractions (II), humic-like C1
(240,310/420 nm), C2(260,360/460 nm), and tryptophan-like C3(225,275/340 nm). The total
fluorescence intensity ranged from 49.97 to 159.19 R.U.·g<sup>-1</sup>, and
decreased from east to west with higher values in coast district than in lake center. The
relative proportions of C1, C2, and C3 were 33.63%, 26.87% and 39.49%, respectively. The
fluorescence index (FI), biological origin index (BIX), and humification index (HIX)
ranged from 1.96 to 2.22, 0.69 to 0.94, and 2.62 to 4.39. It indicated that the main
source of FDOM in Lihu Lake was from endogenesis, and mainly derived from microbes, algae
and other newly autochthonous sources. The results illustrated, the fluorescence
intensity had significant correlation with organic and inorganic nitrogen(P<0.01), and
had higher correlation with inorganic nitrogen. © 2017, Science Press. All right
reserved.
Number of references:30
Main heading:Fluorescence
Controlled terms:Amino acids - Biogeochemistry - Biological materials - Dissolution -
Fluorescence spectroscopy - Lakes - Nitrogen - Organic compounds - Sediments - Surficial
sediments
Uncontrolled terms:Correlation analysis - Dissolved organic matters - Excitation-emission
matrix fluorescence spectroscopies - Fluorescence intensities - Fluorescence spectra -
Humification index (HIX) - Spectral characteristics - Surface sediments
Classification code:461.2 Biological Materials and Tissue Engineering - 481.2
Geochemistry - 483 Soil Mechanics and Foundations - 741.1 Light/Optics - 741.3 Optical
Devices and Systems - 802.3 Chemical Operations - 804 Chemical Products Generally -
804.1 Organic Compounds
Numerical data indexing:Percentage 2.69e+01%, Percentage 3.36e+01%, Percentage 3.95e+01%
DOI:10.13227/j.hjkx.201605148
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 98>
Accession number:20171003409552
Title:Nitrogen removal performance of ANAMMOX with different organic carbon sources
Authors:Guan, Yong-Jie (1); Yu, De-Shuang (1); Li, Jin (1); Qi, Pan-Qing (1); Wei, Si-Jia
(1)
Author affiliation:(1) School of Environmental Science and Engineering, Qingdao
University, Qingdao; 266071, China
Corresponding author:Li, Jin(ljin0532@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:654-664
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Anaerobic ammonium oxidation (ANAMMOX) has been regarded as an efficient process
to treat high-strength wastewater without organic carbon source. To investigate the
nitrogen removal performance of ANAMMOX in the presence of organic carbon source can
broaden its application in organic wastewater treatment. In this work, an anaerobic
sequencing batch reactor (ASBR) was used to study the effect of organic carbon source on
ANAMMOX process. The experimental results indicated that the activity of anaerobic
ammonia oxidizing bacteria (AAOB) decreased by 84.2% when 200 mg·L<sup>-1</sup>COD
of glucose was added. When sodium acetate was added, the activity of AAOB was affected
little. Besides, it even promoted the activity with COD less than 120 mg·L<sup>-
1</sup>. The effect of sucrose on ANAMMOX process was similar to that of sodium acetate
and the maximum specific ANAMMOX activity (SAA) increased by 25.0% with 80
mg·L<sup>-1</sup>COD. When citric acid was added, the maximum SAA peaked with 80
mg·L<sup>-1</sup>COD. The order of ANAMMOX promotion resulted from organic carbon
source was sucrose, sodium acetate, citric acid and glucose. With addition of organic
carbon source, nitrate could also be removed through the synergy of ANAMMOX and
denitrification, and the total nitrogen removal efficiency increased. © 2017,
Science Press. All right reserved.
Number of references:27
Main heading:Nitrogen removal
Controlled terms:Ammonia - Bacteria - Batch reactors - Chemical oxygen demand - Citric
acid - Glucose - Nitrogen - Organic carbon - Sodium - Sugar (sucrose) - Wastewater
treatment
Uncontrolled terms:Ammonia oxidizing bacteria - Anaerobic ammonium oxidation - Anaerobic
sequencing batch reactors - ANAMMOX - Organic wastewater treatment - Removal performance
- Specific Anammox activity - Stoichiometric ratio
Classification code:452.4 Industrial Wastes Treatment and Disposal - 549.1 Alkali
Metals - 802.1 Chemical Plants and Equipment - 804 Chemical Products Generally - 822.3
Food Products
Numerical data indexing:Mass_Density 1.20e-01kg/m3, Mass_Density 2.00e-01kg/m3,
Mass_Density 8.00e-02kg/m3, Percentage 2.50e+01%, Percentage 8.42e+01%
DOI:10.13227/j.hjkx.201603179
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 99>
Accession number:20171003409536
Title:Distribution and burial characteristics of nitrogen forms in sediment of Dianchi
Lake during last century
Authors:Wu, Ya-Lin (1); Li, Shuai-Dong (1); Jiang, Jun-Wu (1); Shen, Yin-Yin (1); Huang,
Chang-Chun (1, 2, 3); Huang, Tao (1); Yang, Hao (1); Yu, Yan-Hong (4); Luo, Yu (4)
Author affiliation:(1) College of Geography Science, Nanjing Normal University, Nanjing;
210023, China; (2) Jiangsu Center for Collaborative Innovation in Geographical
Information Resource Development and Application, Nanjing; 210023, China; (3) Jiangsu
Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing; 210023,
China; (4) Kunming China International Research Center for Plateau Lake, Yunnan Institute
of Environmental Science, Kunming; 650000, China
Corresponding author:Huang, Chang-Chun(huangchangchun@njnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:517-526
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to analyze the composition, distribution and burial characteristics of
nitrogen in sediments of Dianchi Lake in the last hundred years, 6 sediment cores were
sampled in July 2014 to determine the contents of different nitrogen species and
sedimentary age sequence. The integrated results demonstrated a high content of total
nitrogen in sediments ranging from 1 263.68-7 155.17 mg·kg<sup>-1</sup>. The
contents of nitrate nitrogen and ammonium nitrogen were low, which were 10.00-144.00
mg·kg<sup>-1</sup>and 9.20-146.50 mg·kg<sup>-1</sup>, respectively. Organic
nitrogen was the main component in the sediments, ranging from 255.80 to 5 644.25
mg·kg<sup>-1</sup>, composing a large average percentage of 91.26%. In addition,
the nitrogen pollution of sediment in Dianchi Lake has reached a high level and is
becoming serious since 1970s, which surged in the late 1990s. The spatial difference of
total nitrogen was obvious, with comparably the most in the south, less in the north and
least in the center. The average deposition rate was changing from 0.092 g·
(cm<sup>2</sup>·a)<sup>-1</sup>to 0.187 g·(cm<sup>2</sup>·a)<sup>-
1</sup>in the last 100 years and increased first, then declined, finally showed a slight
upward trend over time. The burial rate of total nitrogen in sediment increased over time
and almost grew up straightly after 1990, which decreased from the south to the north of
Dianchi Lake in space. It was estimated that the reserves of total nitrogen, organic
nitrogen, nitrate nitrogen, ammonium nitrogen in the sediment were 92 139.15 t, 86 745.62
t, 2 464.16 t, 2 929.37 t, respectively, from 1900 to 2014. © 2017, Science Press.
All right reserved.
Number of references:33
Main heading:Nitrogen
Controlled terms:Deposition rates - Lakes - Nitrates - Pollution - Sediments
Uncontrolled terms:Ammonium nitrogen - Dianchi lakes - Nitrate nitrogen - Nitrogen
pollution - Nitrogen species - Organic nitrogen - Spatial differences - Total nitrogen
Classification code:483 Soil Mechanics and Foundations - 804 Chemical Products
Generally - 804.2 Inorganic Compounds
Numerical data indexing:Age 1.00e+02yr, Percentage 9.13e+01%
DOI:10.13227/j.hjkx.201605232
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 100>
Accession number:20172603861000
Title:Non-CO<inf>2</inf>Greenhouse Gas Release from Different Biological Wastewater
Treatment Processes
Authors:Li, Hui-Juan (1); Peng, Dang-Cong (1); Liu, Wen-Bo (1); Yao, Qian (1); Zhuo, Yang
(1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1640-1646
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Methane (CH<inf>4</inf>) and nitrous oxide (N<inf>2</inf>O) are two of the most
important non-CO<inf>2</inf>greenhouse gases. And municipal sewage treatment plant is an
important anthropogenic source of CH<inf>4</inf>and N<inf>2</inf>O. Therefore, it is
essential to measure the production and emission of CH<inf>4</inf>and N<inf>2</inf>O
during biological wastewater treatment process. The surface emission flux isolation
chamber was employed to collect the gas sample from the Xi'an No.3 WWTP (the Orbal
oxidation ditch process) and Xi'an NO.4 WWTP (A/A/O process) to determine the contents of
methane and nitrous oxide. And the effects of temperature and dissolved oxygen
concentration on non-CO<inf>2</inf>greenhouse gases emission from Xi'an NO.4 WWTP were
discussed. The results showed that methane and nitrous oxide emission factors from No.3
WWTP were 1 181 mg CH<inf>4</inf>per m<sup>3</sup>influent and 36.20 mg N<inf>2</inf>O
per m<sup>3</sup>influent, respectively while those from the No.4 WWTP were 209 mg
CH<inf>4</inf>per m<sup>3</sup>influent and 54.64 mg N<inf>2</inf>O per
m<sup>3</sup>influent. In addition, the important influencing factors which affected
methane and nitrous oxide emission were temperature, aeration strategy, DO, nitrite
oxidation rate and specific methanogenic activity. © 2017, Science Press. All right
reserved.
Number of references:39
Main heading:Biological water treatment
Controlled terms:Bioremediation - Carbon dioxide - Dissolved oxygen - Greenhouse gases -
Methane - Nitrogen oxides - Oxidation - Sewage lagoons - Sewage treatment plants -
Temperature - Wastewater treatment
Uncontrolled terms:A/A/O - Biological treatment - Biological wastewater treatment process
- Dissolved oxygen concentrations - Municipal sewage treatment plant - Nitrous oxide -
Oxidation ditch - Specific methanogenic activity
Classification code:445.1 Water Treatment Techniques - 451.1 Air Pollution Sources -
452.2 Sewage Treatment - 452.4 Industrial Wastes Treatment and Disposal - 454.2
Environmental Impact and Protection - 641.1 Thermodynamics - 802.2 Chemical Reactions -
804.1 Organic Compounds - 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201610122
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 101>
Accession number:20172603860977
Title:Efficacy of PhoslockⓇ on the Reduction of Sediment Phosphorus Release in West
Lake, Hangzhou, China
Authors:Zhu, Guang-Wei (1); Li, Jing (1, 2); Zhu, Meng-Yuan (1); Gong, Zhi-Jun (1); Xu,
Hai (1); Yang, Gui-Jun (2); Zhang, Yun-Lin (1); Qin, Bo-Qiang (1)
Author affiliation:(1) State Key Laboratory of Lake Environment and Science, Nanjing
Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing; 210008,
China; (2) College of Environmental and Civil Engineering, Jiangnan University, Wuxi;
214122, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1451-1459
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Famous as the world cultural heritage, West Lake in Hangzhou city has plenty of
soft sediments with high organic matter content. To search the countermeasures for
internal phosphorus release reduction from the sediment, the sediment core incubation was
conducted to understand the efficacy of PhoslockⓇ on internal phosphorus release in
spring, summer and winter, respectively. The results showed that the internal phosphorus
release fluxes in winter and spring were relatively low, with averaged values in the
entire lake of 0.13 mg·(m<sup>2</sup>·d)<sup>-1</sup>and 0.29 mg·
(m<sup>2</sup>·d)<sup>-1</sup>, respectively, while the release flux was 3.29
mg·(m<sup>2</sup>·d)<sup>-1</sup>in summer, more than ten times higher than
those in spring and winter. It was estimated that 23.7 kg of phosphorus could be released
from sediment in the entire lake every day in summer. Spatially, the phosphorus release
flux was related to organic matter contents in sediments, but not the phosphorus or
bioavailable phosphorus contents in sediments in West Lake. With PhoslockⓇ added at
the rate of 630 g·m<sup>-2</sup>, sediment phosphorus release was successfully
controlled, which reduced the phosphorus concentration in the lake water to less than
0.010 mg·L<sup>-1</sup>. Especially during summer time, the sediment phosphorus
release was reduced by 98% after PhoslockⓇ application. The research suggested that
PhoslockⓇ is powerful for phosphorus control even for sediments with high organic
matter content, which could be considered in ecological restoration of WEst Lake. ©
2017, Science Press. All right reserved.
Number of references:31
Main heading:Phosphorus
Controlled terms:Biogeochemistry - Biological materials - Lakes - Organic compounds -
Sediments
Uncontrolled terms:Bioavailable phosphorus - Ecological restoration - Internal loading -
Organic matter content - Phosphorus concentration - Phosphorus release - Soft sediments -
World cultural heritages
Classification code:461.2 Biological Materials and Tissue Engineering - 481.2
Geochemistry - 483 Soil Mechanics and Foundations - 804 Chemical Products Generally -
804.1 Organic Compounds
Numerical data indexing:Mass 2.37e+01kg, Mass_Density 1.00e-05kg/m3, Percentage 9.80e+01%
DOI:10.13227/j.hjkx.201609123
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 102>
Accession number:20172603861003
Title:Dynamic Differences of Uptake and Translocation of Exogenous Selenium by Different
Crops and Its Mechanism
Authors:Peng, Qin (1); Li, Zhe (1); Liang, Dong-Li (1, 2); Wang, Meng-Ke (1); Guo, Lu (1)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) Key Laboratory of Plant Nutrition and the Agri-
environment in Northwest China, Ministry of Agriculture, Yangling; 712100, China
Corresponding author:Liang, Dong-Li(dlliang@nwsuaf.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1667-1674
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The study aimed to find out the dynamic changes of selenium (Se) uptake with
crops growing and to provide better understanding on the translocation of Se in soil-
plant system. Pot experiments and laboratory analysis were carried out, in which 6 crops
were planted for eight weeks in the soils treated with selenite and selenate. The results
showed that there was a significant difference in the plant dynamic uptake pattern for
selenite and selenate. Se concentration in shoots and roots of all tested plants
continuously declined with growth since the third week after planting for selenate
treatment; while Se concentration in roots of plants gradually increased with the growth,
and that for shoots firstly increased and then leveled off or decreased for selenite
treatment. Crops could accumulate Se throughout the whole growing period, while 80% of
the Se in plants was uptaken in the first 6 weeks. Among the 6 tested plants, the Se
concentration in the shoots and roots of mustard was the highest, followed by the shoots
of wheat for selenate treatment. The Se concentration in shoots of carrot was the
highest, while that in roots was the lowest for selenite treatment. For the same Se
treatment, the Se concentrations in both roots and shoots of broccoli, purple cabbage and
flowering Chinese cabbage were similar. Broccoli, purple cabbage, flowering Chinese
cabbage, mustard and wheat had higher translocation ability to transport selenate than
selenite from roots to shoots, whereas carrot had the same ability for translocating
selenite and selenate. Biological dilution affected the dynamic changes of the Se content
in crops, especially for selenate treatment, and a significant negative correlation
between Se concentration of plants and their biomass further verified this. However, the
changes of biomass of plants with growing period couldn't explain the total inverse
dynamic uptake pattern for selenite and selenate. A significant positive correlation was
observed between Se accumulations amount in six crops with available Se changes in soil
during the corresponding growing period for selenate treatment, while no such correlation
was found for selenite treatment. Se accumulation in crops grown on selenite-treated soil
accounted for 0.5%-18.1% of soil available Se, whereas that in selenate treatment was
1.1-4.5 times of soil available Se except for carrot. In conclusion, the dynamic changes
of Se uptake with crop growth were the comprehensive results of the absorption and
transport capacity of crops, Se availability in soil and biological dilution. It should
be considered as a whole in the selenium biofortification. © 2017, Science Press.
All right reserved.
Number of references:39
Main heading:Soils
Controlled terms:Crops - Ecology - Selenium - Selenium compounds
Uncontrolled terms:Flowering chinese cabbages - Laboratory analysis - Negative
correlation - Positive correlations - Selenate - Selenite - Translocation - Transport
capacity
Classification code:454.3 Ecology and Ecosystems - 483.1 Soils and Soil Mechanics -
549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 821.4
Agricultural Products
Numerical data indexing:Age 1.15e-01yr, Percentage 5.00e-01% to 1.81e+01%, Percentage
8.00e+01%
DOI:10.13227/j.hjkx.201607205
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 103>
Accession number:20172703864538
Title:Adsorption Characteristics of Copper in Water by the Porous Biomorph-Genetic
Composite of HAP/C with Eucalyptus Wood Template
Authors:Li, Chao (1, 2); Zhu, Zong-Qiang (1, 2); Cao, Shuang (3); Zhu, Yi-Nian (1, 2);
Tan, Xiao (1, 2); Ding, Hui (1, 2)
Author affiliation:(1) Collaborative Innovation Center for Water Pollution Control and
Water Safety in Karst Area, Guilin University of Technology, Guilin; 541004, China; (2)
Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin
University of Technology, Guilin; 541004, China; (3) Henan Electric Power Survey &
Design Institute, Zhengzhou; 450007, China
Corresponding author:Zhu, Zong-Qiang(zhuzongqiang@glut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1074-1083
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The specific characteristics and mechanism of adsorption of Cu(II) were studied
by using HAP/C composite (PBGC-HAP/C) as adsorbent, and using pH value of the solution
system, initial concentration of Cu(II) and particle size of the material as influential
factors. The results showed that when the solution was weak acid (pH=5), the adsorption
effect was the best; the increase of the initial concentration of the reaction system was
not conducive to the enhancement of the adsorption effect; and the decrease of the
particle size of the adsorbent facilitated the adsorption process. The pseudo-second-
order kinetic model could accurately describe the adsorption process, and the calculated
adsorption capacity (0.99, 1.93, 4.03 mg·g<sup>-1</sup>) was close to the
experimental measured values (0.99, 1.93, 4.05mg·g<sup>-1</sup>); Langmuir model
could fit the adsorption process very well, which indicated that adsorption was monolayer
adsorption and the increase of temperature was conducive to adsorption. The
thermodynamics test results of ΔG<sup>θ</sup><0,
ΔS<sup>θ</sup>>0 and ΔH<sup>θ</sup>>0 showed that the
adsorption process was endothermic and spontaneous. Through comparative analysis of the
SEM, EDS, XRD and FTIR of materials before and after adsorption, the results indicated
that the chemical complexation reaction of Cu(II) with the oxygen functional groups on
the surface of PBGC-HAP/C was the main purification mechanism, which was accompanied with
physical adsorption, electrostatic adsorption and ion exchange. © 2017, Science
Press. All right reserved.
Number of references:44
Main heading:Adsorption
Controlled terms:Chemical analysis - Complexation - Dynamics - Hydroxyapatite - Ion
exchange - Particle size - Thermodynamics
Uncontrolled terms:Adsorption characteristic - Adsorption mechanism - Characteristics and
mechanisms - Complexation reaction - Electrostatic adsorption - Oxygen functional groups
- Pseudo-second-order kinetic models - Purification mechanisms
Classification code:641.1 Thermodynamics - 802.2 Chemical Reactions - 802.3 Chemical
Operations - 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201608093
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 104>
Accession number:20172703864558
Title:Effects of Simulated Acid Rain on Soil Respiration and Heterotrophic Respiration in
a Secondary Forest
Authors:Chen, Shu-Tao (1, 2); Sun, Lu (2); Sang, Lin (2); Hu, Zheng-Hua (2)
Author affiliation:(1) Jiangsu Collaborative Innovation Center of Atmospheric Environment
and Equipment Technology (CICAEET), Nanjing University of Information Science and
Technology, Nanjing; 210044, China; (2) School of Applied Meteorology, Nanjing University
of Information Science and Technology, Nanjing; 210044, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1235-1244
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to investigate the effects of simulated acid rain on soil respiration
and heterotrophic respiration in a secondary forest, a field experiment was carried out.
A split-plot experiment was arranged in field. There were 4 blocks; each block had two
main plots which were trenched and un-trenched plots. In each main plot, 4 simulated acid
rain treatments of control (CK), pH 4.0 (A1), pH 3.0 (A2), and pH 2.0 (A3) were randomly
assigned. Soil respiration in the un-trenched plots and heterotrophic respiration in the
trenched plots were measured weekly. Soil temperature and moisture at a depth of 5 cm
were measured during the respiration measurements. The results indicated that different
simulated acid rain treatments exhibited similar seasonal patterns of soil respiration
and heterotrophic respiration. Heterotrophic respiration in the trenched plots was
significantly lower than soil respiration in the un-trenched plots. The annual mean soil
respiration rates for the CK, A1, A2, and A3 treatments in the un-trenched plots were
(2.47±0.31), (2.52±0.22), (2.38±0.17), and (2.43±0.22)
μmol·(m<sup>2</sup>·s)<sup>-1</sup>, respectively, while the annual mean
heterotrophic respiration rates for the 4 treatments in the trenched plots were
(1.55±0.10), (1.65±0.22), (1.77±0.08), and (1.78±0.27)
μmol·(m<sup>2</sup>·s)<sup>-1</sup>, respectively. ANOVA showed that
simulated acid rain had no significant effects on soil respiration in the un-trenched
plots and heterotrophic respiration in the trenched plots. Regression analysis suggested
that there was a significant linear regression relationship between soil respiration and
heterotrophic respiration. Simulated acid rain significantly (P<0.001) decreased the
ratio of soil respiration to heterotrophic respiration. Soil temperature was the main
controlling factor regulating the seasonal patterns of soil respiration and heterotrophic
respiration for each of the SAR treatment, while soil moisture had no significant effects
on the seasonal variability in soil respiration and heterotrophic respiration. ©
2017, Science Press. All right reserved.
Number of references:40
Main heading:Soil surveys
Controlled terms:Acid rain - Forestry - Moisture - Rain - Regression analysis - Soil
moisture - Soils - Temperature
Uncontrolled terms:Heterotrophic respiration - Secondary forests - Simulated acid rains -
Soil respiration - Soil temperature
Classification code:443.3 Precipitation - 451.1 Air Pollution Sources - 483.1 Soils
and Soil Mechanics - 641.1 Thermodynamics - 922.2 Mathematical Statistics
Numerical data indexing:Size 5.00e-02m
DOI:10.13227/j.hjkx.201608206
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 105>
Accession number:20172703864534
Title:Effects of Pretreatment on Hydraulic Irreversible Membrane Fouling During
Ultrafiltration Short Process: A Pilot Study
Authors:Yang, Hai-Yan (1, 2); Xing, Jia-Jian (2); Wang, Can (3); Sun, Guo-Sheng (1);
Zhao, Yan (1); Liang, Heng (2); Xu, Ye-Qin (1); Li, Gui-Bai (2)
Author affiliation:(1) Guangdong GDH Water Co., Ltd., Shenzhen; 518021, China; (2) School
of Environmental and Municipal Engineering, Harbin Institute of Technology, Harbin;
150090, China; (3) School of Environmental and Municipal Engineering, Qingdao University
of Technology, Qingdao; 266033, China
Corresponding author:Li, Gui-Bai(liguibai@vip.163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1046-1053
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Pilot-scale performances for ultrafiltration of Dongjiang river water without
and with micro-coagulation and coagulation-adsorption-sedimentation pretreatments were
conducted to investigate the effects of pretreatments on hydraulic irreversible fouling
of ultrafiltration short processes. Scanning electron microscope (SEM) imaging, high
performance size exclusion chromatography (HPSEC) and fluorescence excitation-emission
matrix (EEM) were employed to identify foulants responsible for irreversible fouling
during ultrafiltration with and without pretreatments. The results showed that the
hydraulic irreversible fouling rate was 0.16 kPa·d<sup>-1</sup>with micro-
coagulation pretreatment at 10 L·(m<sup>2</sup>·h)<sup>-1</sup>, while the
rate without pretreatment was 0.32 kPa·d<sup>-1</sup>at the same flux. Meanwhile,
the fouling rate with coagulation-adsorption-sedimentation pretreatment was almost zero
at the same flux. Furthermore, when the flux increased to 17 L·
(m<sup>2</sup>·h)<sup>-1</sup>, the irreversible fouling was not observable with
coagulation-adsorption-sedimentation pretreatment (backwashing every 24 hours).
Properties of foulants from external membrane and internal membrane after backwashing
showed that the protein-like and fulvic-like substances were responsible for irreversible
fouling in Dongjiang river water. Furthermore, structural alteration of cake layer
resulted in less cake resistance and higher backwash efficiency after micro-coagulation
pretreatment, leading to less irreversible fouling. Coagulation-adsorption-sedimentation
pretreatment decreased irreversible fouling with higher removal efficiency of protein-
like and fulvic substances, which were the foulants responsible for irreversible fouling
during ultrafiltration. Both micro-coagulation and coagulation-adsorption-sedimentation
pretreatments decreased irreversible fouling during ultrafiltration short process. ©
2017, Science Press. All right reserved.
Number of references:24
Main heading:Fouling
Controlled terms:Adsorption - Coagulation - Efficiency - Membrane fouling - Proteins -
Scanning electron microscopy - Sedimentation - Size exclusion chromatography -
Ultrafiltration - Water resources
Uncontrolled terms:Fluorescence excitation emission matrix - High performance size
exclusion chromatography - Irreversible fouling - Low flux - Membrane foulants - Pre-
Treatment - Removal efficiencies - Structural alterations
Classification code:444 Water Resources - 801 Chemistry - 802.3 Chemical Operations -
804.1 Organic Compounds - 913.1 Production Engineering - 951 Materials Science
Numerical data indexing:Time 8.64e+04s
DOI:10.13227/j.hjkx.201608028
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 106>
Accession number:20171003409557
Title:Effect of zero valent iron on the decline of tetracycline resistance genes and
class 1 integrons during thermophilic anaerobic digestion of sludge
Authors:Wei, Xin (1); Xue, Shun-Li (1); Yang, Fan (1); Li, Xiang (1); Liu, Zhen-Hong (1);
Xue, Gang (1); Gao, Pin (1)
Author affiliation:(1) State Environmental Protection Engineering Center for Pollution
Treatment and Control in Textile Industry, College of Environmental Science and
Engineering, Donghua University, Shanghai; 201620, China
Corresponding author:Gao, Pin(pingao@dhu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:697-702
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To investigate the effects of zero valent iron (Fe<sup>0</sup>) on the decline
of antibiotic resistance genes during thermophilic anaerobic digestion of sludge, the
abundances of seven tetracycline resistance genes (TC-ARGs, including tetA, tetC, tetG,
tetM, tetO, tetW, and tetX) and class 1 integron gene (intI1) were quantified by
quantitative PCR (qPCR). Also, the concentrations of volatile fatty acids (VFAs) were
determined. The correlations between the abundances of TC-ARGs and intI1 gene and the
concentrations of VFAs were discussed. The results showed that appropriate dose of
Fe<sup>0</sup>such as 0.10 g·g<sup>-1</sup>VSS could enhance the anaerobic
digestion process of sludge, and the production of total VFAs and acetic acid increased
significantly. The decrease in the abundances of TC-ARGs and intI1 gene was also
enhanced. However, excessive Fe<sup>0</sup>such as 1.17 g·g<sup>-1</sup>VSS could
not further improve the reduction in the abundances of TC-ARGs and intI1 gene, probably
resulted from the occurrence of horizontal gene transfer. The abundances of TC-ARGs
except tetO gene, as well as intI1 gene exhibited significant negative correlation with
the concentration of acetic acid, indicating that acetic acid probably had an enhanced
effect on the decline of TC-ARGs and intI1 gene during thermophilic anaerobic digestion
of sludge. © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Anaerobic digestion
Controlled terms:Acetic acid - Fatty acids - Gene transfer - Genes - Iron - Organic acids
- pH - Polymerase chain reaction - Sludge digestion - Volatile fatty acids
Uncontrolled terms:Anaerobic digestion process - Antibiotic resistance genes - Class 1
integrons - Concentration of acetic acid - Resistance genes - Thermophilic anaerobic
digestion - Volatile fatty acids (VFAs) - Zero-valent iron
Classification code:452.2 Sewage Treatment - 461.2 Biological Materials and Tissue
Engineering - 461.8.1 Genetic Engineering - 545.1 Iron - 801.1 Chemistry, General -
801.2 Biochemistry - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201607235
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 107>
Accession number:20171003416391
Title:Comparisons between seasonal and diurnal patterns of cave air CO<inf>2</inf>and
Control Factors in Jiguan Cave, Henan Province, China
Authors:Zhang, Ping (1, 2, 3); Yang, Yan (1, 2, 3); Sun, Zhe (1, 2, 3); Liang, Sha (1, 2,
3); Zhang, Na (1, 2, 3); Tian, Ning (1, 2, 3); Li, Jian-Cang (4); Ling, Xin-You (4);
Zhang, Zhi-Qin (4)
Author affiliation:(1) Key Laboratory of Eco-Environment in Three Gorges Reservoir
Region, School of Geographical Sciences, Southwest University, Chongqing; 400715, China;
(2) Field Scientific Observation & Research Base of Karst Eco-environments at
Nanchuan in Chongqing, Ministry of Land and Resources of China, Chongqing; 408435, China;
(3) Opening Laboratory of Karst Environment, Southwest University, Chongqing; 400715,
China; (4) Administrative Office of Luoyang Jiguan, Luanchuan; 471500, China
Corresponding author:Yang, Yan(yy2954@gmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:60-69
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Cave air CO<inf>2</inf>makes notable impacts on the deposition and dissolution
of speleothem, affecting the stability of carbonate landscape and comfort of tourist in
show caves. Cave air CO<inf>2</inf>is a key factor of karstification occurrence. Studying
the mechanism of cave air CO<inf>2</inf>variation is important for understanding the
pattern of karstification and cave protection. In order to understand the temporal and
spatial variation characteristics and its possible controlling factors, inside and
outside cave air CO<inf>2</inf>, hydrogeochemical index, temperature, relative humidity
as well as precipitation and tourist amount were observed in the Jiguan Cave, which lies
in the west Henan Province of south-north geographical boundary of China. Nearly five
years monitoring of air CO<inf>2</inf>of Jiguan Cave was carried out from December, 2011
to May, 2016. A diurnal monitoring was performed from 19 May, 2016 to 20 May, 2016. The
results indicated that the cave air CO<inf>2</inf>showed notable spatial and seasonal
variations. ①From the spatial variation, the sites closer to cave entrances,
affected by strong cave ventilation, had lower pCO<inf>2</inf>. In addition, the special
structure of Jiguan Cave and soil air pCO<inf>2</inf>variation, vegetation respiration
and soil microbial activity, which in turn were associated with changes in climate and
environment also contributed to the variation of cave air pCO<inf>2</inf>. ② On a
seasonal scale, cave air CO<inf>2</inf>was higher in summer and lower in winter. This
variation of cave air CO<inf>2</inf>was mainly influenced by tourism activity as well as
karstification. ③Tourist amount was the mainly factor that influenced the variation
of cave air CO<inf>2</inf>on a daily scale. Because of tourism activity, cave air
CO<inf>2</inf>was increased, and also cave environment was disturbed. All of these
intimidate the better conservation of cave environment. © 2017, Science Press. All
right reserved.
Number of references:41
Main heading:Carbon dioxide
Controlled terms:Caves - Humidity control
Uncontrolled terms:Control factors - Controlling factors - Diurnal variation - Seasonal
variation - Soil microbial activities - Spatial variations - Temporal and spatial
variation - Tourism activities
Classification code:481.1 Geology - 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201606211
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 108>
Accession number:20171003409550
Title:Characteristics and mechanism of hybrid ozonation-coagulation process in wastewater
reclamation
Authors:Hou, Rui (1); Jin, Xin (1); Jin, Peng-Kang (1); Wang, Xiao-Chang (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Corresponding author:Jin, Peng-Kang(pkjin@hotmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:640-646
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Because of the limited dissolved organic matter removal efficiency in
conventional pre-ozonation-coagulation process, the hybrid ozonation-coagulation (HOC)
process was developed for wastewater reclamation in this study. In this process,
coagulation and ozonation could synchronize within a single unit. Compared with the pre-
ozonation-coagulation process and traditional coagulation process at the same coagulants
dosage, the HOC process exhibited higher treatment efficiency, especially better organic
matter removal performance at each pH value, which were 37.96% and 39.66%, respectively.
In order to obtain the removal mechanism of dissolved organic matters by HOC process,
ozone decomposition at two pH values either with or without
AlCl<inf>3</inf>·6H<inf>2</inf>O was monitored in this study. The results showed
that higher pH and the addition of coagulant could accelerate ozone decay. In addition,
para-chlorobenzoic acid (p-CBA) was chosen as the hydroxyl radical (·OH) probe
compound to indirectly calculate the ·OH exposure. The results revealed that the
HOC process was involved in ·OH reaction and coagulant could promote ozone
decomposition due to its enhancing effect on ·OH production during the ozonation
process. Furthermore, the ozone depletion occurred more quickly at high pH due to its
reaction with hydroxide ions (OH<sup>-</sup>), leading to the formation of ·OH
through a series of chain reactions. Moreover, the effects of tert-butanol, a well-known
·OH inhibitor on ozone decay and p-CBA decomposition were also investigated. The
results indicated that ozone depletion and p-CBA decomposition were significantly
inhibited by tert-butanol, which further proved that ozone was decomposed into ·OH
radicals through chain reactions. In the HOC process, Al-based coagulants and hydrolyzed
products could act as catalysts to enhance ozone decomposition into ·OH which is a
powerful oxidant to improve the organics removal efficiency. © 2017, Science Press.
All right reserved.
Number of references:51
Main heading:Wastewater reclamation
Controlled terms:Biogeochemistry - Biological materials - Chains - Chemicals removal
(water treatment) - Coagulation - Efficiency - Free radicals - Organic compounds - Ozone
- Ozone layer - Ozone water treatment - Ozonization - pH - Wastewater treatment
Uncontrolled terms:Characteristics and mechanisms - Coagulation process - Dissolved
organic matters - Hydrolyzed products - Hydroxyl radicals - Organic matter removal -
Ozone decomposition - Treatment efficiency
Classification code:452.4 Industrial Wastes Treatment and Disposal - 461.2 Biological
Materials and Tissue Engineering - 602.1 Mechanical Drives - 801.1 Chemistry, General -
801.2 Biochemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804
Chemical Products Generally - 804.1 Organic Compounds - 913.1 Production Engineering
Numerical data indexing:Percentage 3.80e+01%, Percentage 3.97e+01%
DOI:10.13227/j.hjkx.201607195
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 109>
Accession number:20171003409524
Title:Atmospheric dry deposition fluxes and seasonal variations of particulate matter and
lead in urban Beijing
Authors:Yao, Li (1); Liu, Jin (1, 2); Pan, Yue-Peng (1); Tian, Shi-Li (1); Wang, Zhen-Bo
(3); Wei, Xia (4); Zhang, Guo-Zhong (1); Zhou, Bao-Hua (2); Wang, Yue-Si (1)
Author affiliation:(1) State Key Laboratory of Atmospheric Boundary Layer Physics and
Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences,
Beijing; 100029, China; (2) School of Resources and Environment, University of Ji'nan,
Ji'nan; 250022, China; (3) Institute of Geographic Sciences and Natural Resources
Research, Chinese Academy of Sciences, Beijing; 100101, China; (4) Yunnan Meteorological
Bureau, Kunming; 650000, China
Corresponding author:Pan, Yue-Peng(panyuepeng@mail.iap.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:423-428
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To investigate the dry deposition pattern of particulate matter and lead in
urban Beijing, dry deposited particles were collected based on a surrogate surface
between December 2013 and November 2014 and subjected to elemental analysis by using
microwave digestion and inductively coupled plasma mass spectrometry. The results showed
that dry deposition fluxes of particle mass and total lead were 0.84 t·
(hm<sup>2</sup>·a)<sup>-1</sup>and 7.56 mg·(m<sup>2</sup>·a)<sup>-
1</sup>, respectively, with a seasonal trend of spring>winter>autumn~summer,
exhibiting a similar temporal pattern to that of coarse particles. In addition, dry
deposition flux of water-soluble lead was 3.14 mg·(m<sup>2</sup>·a)<sup>-
1</sup>. It was found that the ratio of soluble fraction to total lead in dry deposited
particles reached up to 43%, coinciding with a seasonal variation of ambient sulfur
dioxide. The findings highlighted the anthropogenic imprints on the dry deposition flux
of particles and heavy metals as well as the solubility of lead. This study also provides
a first-hand dataset that can be used to assess ecological and environmental impacts of
dry deposited lead, and an up-to-date scientific basis for the crafting abatement
strategies to further reduce emission of heavy metals in China. © 2017, Science
Press. All right reserved.
Number of references:26
Main heading:Particles (particulate matter)
Controlled terms:Air pollution - Deposition - Environmental impact - Heavy metals - Lead
- Mass spectrometry - Solubility - Sulfur dioxide
Uncontrolled terms:Atmospheric dry deposition - Dry deposition - Dry deposition fluxes -
Microwave digestion - Particulate Matter - Seasonal variation - Similar temporal patterns
- Surrogate surfaces
Classification code:451 Air Pollution - 454.2 Environmental Impact and Protection - 531
Metallurgy and Metallography - 546.1 Lead and Alloys - 801 Chemistry - 801.4 Physical
Chemistry - 802.3 Chemical Operations - 804.2 Inorganic Compounds - 951 Materials
Science
Numerical data indexing:Percentage 4.30e+01%
DOI:10.13227/j.hjkx.201601132
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 110>
Accession number:20171003409525
Title:Pollution characteristics of heavy metals in PM<inf>2.5</inf>and their human health
risks among the coastal city group along western Taiwan Straits Region, China
Authors:Chen, Yan-Ting (1, 2); Du, Wen-Jiao (1, 2, 3); Chen, Jin-Sheng (1, 2); Xu, Ling-
Ling (1, 2)
Author affiliation:(1) Center for Excellence in Urban Atmospheric Environment, Institute
of Urban Environment, Chinese Academy of Sciences, Xiamen; 361021, China; (2) Key
Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese
Academy of Sciences, Xiamen; 361021, China; (3) University of Chinese Academy of
Sciences, Beijing; 100049, China
Corresponding author:Chen, Jin-Sheng(jschen@iue.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:429-437
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:PM<inf>2.5</inf>samples were collected from 11 sampling sites in the coastal
city group along western Taiwan Straits region, China, and these heavy metal elements
(Zn, Cu, Pb, Ni, Cr, As) were detected using particle-induced X-ray emission (PIXE)
method. The pollution characteristics, enrichment factors and source apportionment of
heavy metals in PM<inf>2.5</inf>were analyzed, and furthermore, their human health risks
were determined. The result showed concentration distribution was obviously different
between PM<inf>2.5</inf>and heavy metals in the city group, for the main sources (e.g.
construction dust and ground dust) for PM<inf>2.5</inf>were not the main contribution to
these heavy metals. The enrichment factors of Zn, Cu, Pb, Mn, Ni, Cr, As exceeded 10,
which suggested these metals were enriched and significantly impacted by anthropogenic
pollution. Three main groups of heavy metals in PM<inf>2.5</inf>were identified by
principal component analysis (PCA-MLR), such as coal combustion and traffic emissions
(70.59%), multiple sources (coal and oil combustion, pyrometallurgical process, 17.55%)
and other industry (11.86%). The risk levels for carcinogenic heavy metals (Ni, Cr, As)
and non-carcinogenic heavy metals (Zn, Cu, Pb, Mn) were lower than the average level of
risk acceptance (10<sup>-6</sup>), which suggested these heavy metals did not cause harm
to human health in these cities. © 2017, Science Press. All right reserved.
Number of references:31
Main heading:Copper
Controlled terms:Air pollution - Coal combustion - Coal industry - Dust - Health - Health
risks - Heavy metals - Ion beams - Lead - Manganese - Nickel - Pollution - Principal
component analysis - Pyrometallurgy - Risk assessment - Trace elements - Zinc
Uncontrolled terms:Anthropogenic pollution - Concentration distributions - Enrichment
factors - Human health - Particle induced X-ray emission - Pyro-metallurgical process -
Taiwan Straits - Trace heavy metals
Classification code:451 Air Pollution - 451.1 Air Pollution Sources - 461.6 Medicine
and Pharmacology - 461.7 Health Care - 503 Mines and Mining, Coal - 521 Fuel
Combustion and Flame Research - 524 Solid Fuels - 531 Metallurgy and Metallography -
531.1 Metallurgy - 543.2 Manganese and Alloys - 544.1 Copper - 546.1 Lead and Alloys
- 546.3 Zinc and Alloys - 548.1 Nickel - 914.1 Accidents and Accident Prevention -
922.2 Mathematical Statistics - 932.1 High Energy Physics
Numerical data indexing:Percentage 1.19e+01%, Percentage 1.76e+01%, Percentage 7.06e+01%
DOI:10.13227/j.hjkx.201606077
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 111>
Accession number:20171003416406
Title:Effects of UV radiation on the coagulation process of kaolin and involved
mechanisms
Authors:Wang, Wen-Dong (1, 2); Wang, Chang-Xin (1); Liu, Hui (1); Han, Yu (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China; (2) Department of
Environmental Technology and Ecology, Yangtze Delta Region Institute of Tsinghua
University, Jiaxing; 314006, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:188-194
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Kaolin commonly exists in water, and it has an important impact on the water
treatment processes and contaminants'migration and transformation. In this study, PAC was
used as flocculating agent to systematically investigate the effects of UV radiation on
the coagulation process of kaolin by jar test. The results showed that under neutral and
acidic conditions, UV radiation could promote the coagulation process of kaolin
suspension. When the solution pH, coagulant dosage and irradiation time were 7.0, 30
mg·L<sup>-1</sup>and 2.0 h, respectively, the kaolin remove rate of effluent after
coagulation increased from 81.05% to 93.90% by using UV radiation. This might be related
to the decrease of -OH stretching vibration absorption peak and the enhancement of Si-O
stretching vibration absorption peak and Si-O bending vibration absorption peak after UV
radiation, so that the number of the active spot(-OH)on kaolin surface declined. These
changes might lead to decrease of the negative charge on kaolin surface, which promoted
kaolin suspension to precipitate in coagulation process. However, under alkaline
conditions, its settlement performance was slightly lower than the water samples without
ultraviolet radiation treatment. © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Chemical water treatment
Controlled terms:Alkalinity - Coagulation - Effluents - Kaolin - Radiation - Radiation
effects - Stretching - Ultraviolet radiation - Water treatment - Zeta potential
Uncontrolled terms:Alkaline conditions - Coagulation process - Flocculating agents -
Fourier transform infra reds - Kaolin suspensions - OH stretching vibrations - Stretching
vibrations - Water treatment process
Classification code:445.1 Water Treatment Techniques - 452.3 Industrial Wastes - 482.2
Minerals - 535.2 Metal Forming - 741.1 Light/Optics - 801.1 Chemistry, General - 801.3
Colloid Chemistry - 802.3 Chemical Operations
Numerical data indexing:Mass_Density 3.00e-02kg/m3, Percentage 8.10e+01% to 9.39e+01%,
Time 7.20e+03s
DOI:10.13227/j.hjkx.201606114
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 112>
Accession number:20171003409572
Title:Effects of nitrogen application on selenium uptake, translocation and distribution
in winter wheat
Authors:Chen, Yu-Peng (1, 3); Peng, Qin (1); Liang, Dong-Li (1, 2); Song, Wei-Wei (1);
Lei, Ling-Ming (1); Yu, Da-Song (1)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) Key Laboratory of Plant Nutrition and the Agri-
environment in Northwest China, Ministry of Agriculture, Yangling; 712100, China; (3)
College of Urban and Rural Construction, Shanxi Agricultural University, Taigu; 030801,
China
Corresponding author:Liang, Dong-Li(dongliliang2005@yahoo.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:825-831
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to better understand the effects of nitrogen application on
accumulation, translocation and distribution of selenium in winter wheat and to provide
theoretical reference for reasonable nitrogen application and increasing selenium content
of grains. A pot experiment was carried out under greenhouse conditions with Se1 (0.74
mg·kg<sup>-1</sup>) or Se2 (2.60 mg·kg<sup>-1</sup>) levels of selenium,
and each Se treatment was supplied with N1 (100 mg·kg<sup>-1</sup>) or N2 (200
mg·kg<sup>-1</sup>) levels of nitrogen, respectively. Selenium concentrations and
biomass amounts of different parts of wheat were determined at jointing and maturity
stage. The results showed that grain yield increased with increasing nitrogen levels by
13.2% and 24.0% in Se1 and Se2 treatment, respectively. Regardless of N rate, Se
concentration of wheat increased with raising Se amended rate (P<0.01). Increasing
nitrogen application could promote Se uptake of root and thus increase the selenium
concentration of wheat grains and leaves, which was greater in Se1 treatment than in Se2
treatments. Se concentrations in wheat grain increased by 22.6% and 12.1% with the
increasing N application rate in low and high Se treatment, respectively. The
distribution ratios of Se in each organ ranked the same as BCFs, following the order of
leaf>grain>glume>root. Increasing N fertilization increased the distribution
ratio of Se in grains by 11.1% and 25.9% in low and high selenate treatments,
respectively. High nitrogen fertilization could promote uptake and translocation of Se in
wheat under low Se conditions, and improve Se use efficiency as well in the agricultural
production. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Grain (agricultural product)
Controlled terms:Agriculture - Crops - Nitrogen - Nitrogen fertilizers - Selenium -
Selenium compounds - Transportation
Uncontrolled terms:Accumulation - Agricultural productions - Application rates -
Distribution - Distribution ratio - Greenhouse conditions - Selenium concentrations -
Wheat
Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline
Earth Metals - 804 Chemical Products Generally - 821 Agricultural Equipment and
Methods; Vegetation and Pest Control - 821.4 Agricultural Products
Numerical data indexing:Percentage 1.11e+01%, Percentage 1.21e+01%, Percentage 1.32e+01%,
Percentage 2.26e+01%, Percentage 2.40e+01%, Percentage 2.59e+01%
DOI:10.13227/j.hjkx.201607194
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 113>
Accession number:20171003416428
Title:Screening of the reduction/stabilization reagent for Cr(VI) contaminated soil in a
planting site and reaction process monitoring
Authors:Li, Pei-Zhong (1); Lü, Xiao-Jian (2); Wang, Hai-Jian (1); Yang, Su-Cai (1);
Wei, Wen-Xia (1); Song, Yun (1)
Author affiliation:(1) Beijing Key Laboratory of Industrial Land Contamination and
Remediation, Environmental Protection Research Institute of Light Industry, Beijing;
100089, China; (2) College of Exploration Technology and Engineering, Hebei Dizhi
University, Shijiazhuang; 050031, China
Corresponding author:Song, Yun(liepi_song@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:368-373
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:There are lots of problems in the domestic remediation of Cr(VI) contaminated
soil field, such as lack of the key processing parameters, poor long-term effect and so
on. The Cr(VI) heavy polluted surface soil was sampled from an electroplating site in
North-China, and then treated with five different reducing reagents. At the same time,
the on-line ORP probes and interval sampling test were chosen to monitor the reaction
process, and to explore the reaction rate and effect. The results showed that No.4
reagent had the highest Cr(VI) reduction effect, reaching up to 99.5%, and the minimum
soil Cr(VI) concentration could reach 2.4 mg·kg<sup>-1</sup>. The No.1 and No.4
reagents had relatively faster reducing rates. There were obvious difference in ORP and
pH monitoring values between different reductants, for example, the No.1 reagent kept the
ORP value stable at around -400 mV. The No.4 reagent gradually increased the value from
-200 mV to 100 mV since 30h, and then kept stable. According to the pH difference among
different reductants, the No.4 reagent was the best and kept the pH value at around 7.
Taking together the final effect and process key parameters, the No.4 reagent was the
best. The scale-up experiment was operated with process monitoring, and the ORP and
conductivity values showed that the reduction reaction took about 160 h. This work would
provide theoretical basis for controlling the maintenance condition and reaction process
in soil Cr(VI) remediation. © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Soil pollution
Controlled terms:Chemical reactions - Chromium compounds - Heavy metals - Pollution -
Process control - Process monitoring - Reduction - Remediation - Soil conservation -
Soils - Stabilization
Uncontrolled terms:Contaminated soils - Electroplating sites - Hexavalent chromium -
Processing parameters - Reducing reagents - Reduction reaction - Scale-up experiment -
Soil remediation
Classification code:454.2 Environmental Impact and Protection - 483.1 Soils and Soil
Mechanics - 531 Metallurgy and Metallography - 802.2 Chemical Reactions - 913.1
Production Engineering
Numerical data indexing:Percentage 9.95e+01%, Time 1.08e+05s, Time 5.76e+05s, Voltage -
2.00e-01V to 1.00e-01V, Voltage -4.00e-01V
DOI:10.13227/j.hjkx.201604098
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 114>
Accession number:20171003416400
Title:Characteristics of nitrogen and phosphorus emissions in the gufu river small
watershed of the three georges reservoir area
Authors:Hua, Ling-Ling (1); Li, Wen-Chao (1); Zhai, Li-Mei (1); Cui, Chao (1); Liu,
Hong-Bin (1); Ren, Tian-Zhi (2); Zhang, Fu-Lin (3); Lei, Qiu-Liang (1)
Author affiliation:(1) Institute of Agricultural Resources and Regional Planning, Chinese
Academy of Agricultural Sciences, Beijing; 100081, China; (2) Agro-Environmental
Protection Institute, Ministry of Agriculture, Tianjin; 300191, China; (3) Institute of
Plant Protection, Soil and Fertilizer Sciences, Hubei Academy of Agricultural Sciences,
Wuhan; 430064, China
Corresponding author:Zhai, Li-Mei(zhailimei@caas.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:138-146
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To study the seasonal change characteristics and form composition of nitrogen
and phosphorus output concentration and pollutant discharge load with rainfall
characteristics at the outlet of Gufu river small watershed, the quality and quantity of
water combined with natural rainfall events were monitored from January to December 2014.
The results showed that the annual runoff volume of the Gufu river small watershed was
0.6×10<sup>8</sup>m<sup>3</sup>. The runoff was concentrated in raining season
(from July to September), accounting for 63.9%. There was significant(P<0.01) positive
correlation between the runoff flow and the annual rainfall. The annual emission of total
nitrogen (TN) was 1 432 t·a<sup>-1</sup>, and the emission was 853
t·a<sup>-1</sup>during the raining season, accounting for 59.6% of annual TN
emission content. The dissolved nitrogen was the main form of nitrogen emission, and the
emission load of each month accounted for 55.4%-91.3% of TN. The positive correlation
between the nitrate nitrogen concentration and rainfall was significant (P<0.05). The
annual emission of total phosphorus (TP) was 563.1 t·a<sup>-1</sup>, and the
content during the raining season accounted for 78.6% of TP annual emission content. The
particle phosphorus (PP) was the main form of phosphorus emission, and the emission load
of each month accounted for 41.9%-79.5% of TP. There was significant(P<0.01) positive
correlation between the annual rainfall, sediment and TP, PP. The correlation between the
total dissolved phosphorus concentration and rainfall was significant (P<0.05). ©
2017, Science Press. All right reserved.
Number of references:34
Main heading:River pollution
Controlled terms:Nitrogen - Phosphorus - Pollution - Rain - Reservoirs (water) - Rivers -
Runoff - Water pollution - Watersheds
Uncontrolled terms:Nitrogen and phosphorus - Nonpoint pollutions - Output concentrations
- Positive correlations - Rainfall characteristics - Small watersheds - Three Georges
reservoir - Total dissolved phosphorus
Classification code:441.2 Reservoirs - 443.3 Precipitation - 444.1 Surface Water - 453
Water Pollution - 804 Chemical Products Generally
Numerical data indexing:Percentage 4.19e+01% to 7.95e+01%, Percentage 5.54e+01% to 9.13e
+01%, Percentage 5.96e+01%, Percentage 6.39e+01%, Percentage 7.86e+01%
DOI:10.13227/j.hjkx.201606210
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 115>
Accession number:20172603860964
Title:Community Characteristics of Cultivable Bacteria in Fine Particles
(PM<inf>2.5</inf>) of Beijing and Baoding
Authors:Hu, Ya-Dong (1, 2); Ma, An-Zhou (1); Lü, Peng-Yi (1, 3); Zhang, Yang (1);
Zhuang, Guo-Qiang (1)
Author affiliation:(1) Key Laboratory of Environmental Biotechnology, Research Center for
Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085, China; (2)
College of Resource and Environment, University of Chinese Academy of Sciences, Beijing;
100049, China; (3) School of Chemical & Environmental Engineering, China University
of Mining and Technology(Beijing), Beijing; 100083, China
Corresponding author:Zhuang, Guo-Qiang(gqzhuang@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1327-1339
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Fine particles(PM<inf>2.5</inf>) collected by two middle volume air samplers in
the suburbs of Baoding and the urban area of Beijing during Jan 10<sup>th</sup>to
17<sup>th</sup>, 2015, were used to compare the community characteristics of cultivable
bacteria in the two sites. In this study, we observed the particle morphology of
PM<inf>2.5</inf>using a field emission scanning electron microscope (FESEM), analyzed the
air mass transportation source of the two sampling sites by the NOAA/ARL HYSPLIT-4
backward trajectory model, and measured the concentrations of the major water-soluble
ions and heavy metal elements in the PM<inf>2.5</inf>samples using ion chromatography,
continuous flow analyzer and ICP-MS. The results indicated that, the cultivable bacteria
of PM<inf>2.5</inf>contained three phyla, which were Firmicutes, Actinobacteria and
α-Proteobacteria. Nine genera and 17 species of cultivable airborne bacteria were
isolated and identified. The most abundant phylum was Firmicutes. The Gram-positive
bacteria accounted for more than 90%. The spore-forming Bacillus which was the dominant
species contributed 68.15% and 75% to the total bacteria in urban Beijing and the suburbs
of Baoding, respectively. The difference in the community structure of PM<inf>2.5</inf>'s
cultivable bacteria in the two sampling areas may be affected by PM<inf>2.5</inf>'s
physical and chemical properties and air mass transportation. © 2017, Science Press.
All right reserved.
Number of references:53
Main heading:Bacteria
Controlled terms:Bacteriology - Chromatography - Correlation methods - Heavy metals - Ion
chromatography - Mass transportation - Scanning electron microscopy - Urban growth
Uncontrolled terms:Air mass - Community structures - Cultivable bacteria - Field emission
scanning electron microscopes - Gram-positive bacterium - Particle morphologies -
Physical and chemical properties - Spore
Classification code:403.1 Urban Planning and Development - 531 Metallurgy and
Metallography - 801 Chemistry - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 6.82e+01%, Percentage 9.00e+01%
DOI:10.13227/j.hjkx.201603224
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 116>
Accession number:20172603861006
Title:Effect of Sediments on Bioaccumulation of Mercury in Fish Body in the Water-Level-
Fluctuating Zone of the Three Gorges Reservoir Area
Authors:Sun, Song (1); Li, Chu-Xian (1); Zhang, Cheng (1, 2, 3); Wang, Yong-Min (1);
Wang, Ding-Yong (1, 2, 3)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Engineering Research Center for Agricultural
Non-point Source Pollution Control in the Three Gorges Reservoir Area, Chongqing; 400716,
China; (3) Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing;
400716, China
Corresponding author:Wang, Ding-Yong(dywang@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1689-1696
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Mercury (Hg) in the aquatic environment is easy to accumulate in fish. In order
to study the effect of the sediments on Hg accumulation in fish in the water-level-
fluctuation zone of the Three Gorges Reservoir, we conducted a 90-days simulated flooding
experiment by using the sediments with different concentrations of Hg. Our study showed
that the concentrations of the total mercury (THg) and methyl mercury (MeHg) in the
overlying water increased after flooding, and the concentrations in the muscle of fish
kept increasing in the period of experiment, the concentrations in the viscera and head
increased in the earlier period but seemingly decreased in the later period. The
bioaccumulated Hg content in the fresh was higher than that in the viscera and head,
between which there was no significant difference. Compared with the control group (no
sediment), the presence of sediments obviously increased the content of Hg bioaccumulated
in fish, and the bioaccumulated Hg level increased with the Hg concentrations in
sediment. The THg and MeHg in different fish parts presented a similar variation trend
with the BCF ranging 1.93×10<sup>5</sup>-8.89×10<sup>5</sup>for MeHg and
1.3×10<sup>3</sup>-12.8×10<sup>3</sup>for inorganic mercury, indicating that
MeHg was more prone to accumulate in fish. The MeHg in fish was significantly related
with THg, and accumulated MeHg occupied about 80.1% (muscle), 79.3% (visceral) and 66.7%
(head) of increased THg. After the reflooding of the sediment in the water-level-
fluctuating zone, net methylation could occur with MeHg as the product, and then MeHg
would diffuse to overlay water, further increasing the Hg bioaccumulation in fish.
Therefore, the potential pollution risk of Hg in the water-level-fluctuationg zone with
large area of the Three Gorges Reservoir cannot be ignored. © 2017, Science Press.
All right reserved.
Number of references:31
Main heading:Reservoirs (water)
Controlled terms:Alkylation - Bioaccumulation - Biochemistry - Fish - Floods - Mercury
(metal) - Muscle - Sediments - Water pollution
Uncontrolled terms:Aquatic environments - Inorganic mercury - Mercury in fishes - Methyl
mercury - Potential pollutions - Three gorges reservoir - Three gorges reservoir area -
Water-level-fluctuation zones
Classification code:441.2 Reservoirs - 453 Water Pollution - 461.2 Biological
Materials and Tissue Engineering - 461.9 Biology - 483 Soil Mechanics and Foundations -
549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 801.2
Biochemistry - 802.2 Chemical Reactions
Numerical data indexing:Age 2.47e-01yr, Percentage 6.67e+01%, Percentage 7.93e+01%,
Percentage 8.01e+01%
DOI:10.13227/j.hjkx.201609006
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 117>
Accession number:20172603860993
Title:Accumulation and Migration Characteristics in Soil Profiles and Bioavailability of
Heavy Metals from Livestock Manure
Authors:He, Meng-Yuan (1); Dong, Tong-Xi (1); Ru, Shu-Hua (2); Su, De-Chun (1)
Author affiliation:(1) College of Resources and Environment Science, China Agricultural
University, Beijing; 100193, China; (2) Institute of Agro-resource and Environment, Hebei
Academy of Agricultural and Forestry Sciences, Shijiazhuang; 050051, China
Corresponding author:Su, De-Chun(dcsu@cau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1576-1586
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The long term and high dosage application of livestock manure may result in
heavy metal accumulation and migration in the soil, which may endanger food security and
affect the top soil heavy metal environmental capacity. Thus, one of the most important
tasks for prevention of soil heavy metal pollution is scientific determination of the
safe use load of heavy metals in livestock manure. A 4-year field plot experiment was
carried out to quantitatively study the accumulation and migration characteristics of
heavy metals from pig and chicken manure in soil profiles and the differences of
bioavailability. The results showed that the contents of Cu and Cd increased
significantly by 43.8%-118.6% and 28.2%-44.9% in topsoil(0-15 cm) after 4-consecutive
year application of pig manure, and the contents of Cu, Zn, Cd, Cr, As, Pb also increased
by 29.7%-48.5%, 239%-456%, 19.9%-80.8%, 40.4%-163%,11.8%-22.0% and 80.3%~95.0% obviously
after application of chicken manure. The accumulation rates of Cu and Zn in topsoil were
76.4%-119% and 14.2%-20.4% with pig manure, 72.1%-88.7% and 63.9%-78.9% with chicken
manure. Under a high dosage of pig and chicken manure, Cu and Zn migrated to a deeper
soil evidently. Applying 60 t·hm<sup>-2</sup>of pig manure after 4-consecutive
year, Cu could migrate to 15-30 cm soil layer, Zn migrated to 30-60 cm soil layer with
chicken manure. Except topsoil, the contents of Cr, Cd, As, Pb did not significantly
increase in other soil layers. 4-year continuous application of chicken manure
significantly decreased the contents of Cu and Cd, but increased the contents of Zn and
Cr in wheat grain and the content of Zn in wheat straw. Pig manure significantly
decreased the content of Zn in wheat grain, but increased As content with 60
t·hm<sup>-2</sup>, the contents of Cu and As in wheat straw also increased
significantly. Besides, the cumulative rate of heavy metals in wheat was no more than 6%,
wheat grain carried out more Cu, Zn than straw, but the Cd, Cr, As, Pb were opposite. The
cumulative rate of heavy metals in wheat decreased with the increasing application of
manure. This research has an important significance in scientific determination of the
heavy metal loads of plow layer, ensuring the quality and safety of agricultural
production, and providing a scientific basis for the source control of soil heavy metal
pollution and the safety production of agricultural goods. © 2017, Science Press.
All right reserved.
Number of references:38
Main heading:Copper
Controlled terms:Agriculture - Animals - Bioaccumulation - Biochemistry - Cadmium -
Chemical contamination - Fertilizers - Food supply - Grain (agricultural product) - Heavy
metals - Lead - Manures - Pollution - Pollution control - Soil pollution - Soil
pollution control - Soil surveys - Soils - Straw - Zinc
Uncontrolled terms:Agricultural productions - Environmental capacity - Heavy metal
accumulation - Migration - Poultry manure - Quality and safeties - Soil profiles - Wheat
Classification code:461.9 Biology - 483.1 Soils and Soil Mechanics - 531 Metallurgy
and Metallography - 544.1 Copper - 546.1 Lead and Alloys - 546.3 Zinc and Alloys -
549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 801.2
Biochemistry - 804 Chemical Products Generally - 821 Agricultural Equipment and
Methods; Vegetation and Pest Control - 822.3 Food Products
Numerical data indexing:Age 4.00e+00yr, Percentage 1.42e+01% to 2.04e+01%, Percentage
2.82e+01% to 4.49e+01%, Percentage 2.97e+01% to 4.85e+01%, Percentage 4.38e+01% to 1.19e
+02%, Percentage 6.00e+00%, Percentage 6.39e+01% to 7.89e+01%, Percentage 7.21e+01% to
8.87e+01%, Percentage 7.64e+01% to 1.19e+02%, Size 0.00e+00m to 1.50e-01m, Size 1.50e-01m
to 3.00e-01m, Size 3.00e-01m to 6.00e-01m
DOI:10.13227/j.hjkx.201609227
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 118>
Accession number:20171003416432
Title:Variation characteristics of vegetables cadmium uptake factors and its relations to
environmental factors
Authors:Yang, Yang (1, 2); Li, Yan-Ling (1, 2); Chen, Wei-Ping (1); Wang, Mei-E (1);
Peng, Chi (1)
Author affiliation:(1) State Key Laboratory of Urban and Regional Ecology, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085,
China; (2) College of Resources and Environment, University of Chinese Academy of
Sciences, Beijing; 100049, China
Corresponding author:Chen, Wei-Ping(wpchen@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:399-404
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The consumption of vegetables is a probable cause of Cd exposure in several
world areas including China. In this study, we selected the prefecture of Youxian,
southern China, as a case to analyze the influences of various environmental factors on
Cd accumulation in vegetables based on a large scale agricultural and climatologically
survey and collection of 585 irrigation water and 625 paired soil-vegetables samples. The
results showed the concentration of Cd differed greatly in the irrigation water, soil and
vegetables. The average daily dose for the adult populations consumed vegetables cropping
in affected areas was slightly above the tolerable daily intake level, suggesting a
potential health risk. The vegetables Cd uptake factor followed the natural lognormal
distribution, and had a 10 percentile probability of higher than 1. The PUF values
exhibited comparable results and appeared to define a reasonable and consistent Cd risk
assessment. Many environmental variables (soil pH, soil organic matter, cation-exchange
capacity, rainfall, water pH, and nitrogenous fertilizer usage) exhibited significant
correlations with the concentrations of Cd in the soil-vegetable system. The canonical
corresponding analysis and path model analysis found that soil pH and soil organic matter
(SOM) had major direct effects on PUF. The close correlations between rainfall, water pH,
nitrogen fertilizer usage and PUF were mainly resuled from the direct effect of soil pH
and SOM. The high field-moisture capacity in the study area generated a rapid
acidification causing the migration of Cd to weaker bounding sites thus promoting the
vegetables uptake. The excessive application of nitrogen fertilizers led to a substantial
loss of SOM and worsening of soil acidification ultimately causing increasing Cd
accumulation in vegetables. Considering that the soil pH and SOM in the study area were
maintained at a low level, the accumulation risk of Cd in soil-vegetable system needs to
be addressed. The influence of environmental factors on vegetables accumulating Cd needs
to be fully considered for better and safer vegetables production. © 2017, Science
Press. All right reserved.
Number of references:26
Main heading:Soil pollution
Controlled terms:Acidification - Biogeochemistry - Biological materials - Cadmium
compounds - Distribution functions - Fertilizers - Gaussian distribution - Health risks -
Irrigation - Nitrogen - Nitrogen fertilizers - Organic compounds - pH effects -
Probability distributions - Rain - Regression analysis - Risk assessment - Soils -
Vegetables - Water
Uncontrolled terms:Canonical correlation analysis - Cation exchange capacities -
Environmental factors - Environmental variables - Log-normal distribution - Path analysis
- Tolerable daily intake - Variation characteristics
Classification code:443.3 Precipitation - 461.2 Biological Materials and Tissue
Engineering - 461.7 Health Care - 483.1 Soils and Soil Mechanics - 801.1 Chemistry,
General - 801.2 Biochemistry - 804 Chemical Products Generally - 804.1 Organic
Compounds - 821.3 Agricultural Methods - 821.4 Agricultural Products - 822.2 Food
Processing Operations - 914.1 Accidents and Accident Prevention - 922.1 Probability
Theory - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201606075
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 119>
Accession number:20171003416433
Title:Effect of sewage sludge compost products application on total mercury and
methylmercury in soil and plants
Authors:Yu, Ya-Wei (1); Yang, Yu-Han (1); Zhang, Cheng (1, 2); Yi, Jian-Ting (1); An,
Si-Wei (1); Wang, Ding-Yong (1, 2)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400715, China
Corresponding author:Zhang, Cheng(zhcheng@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:405-411
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Two different sludge composting products (with and without biochar) were applied
in field to study the variations of total mercury (THg) and methylmercury (MeHg) in soil
and plants, as well as their migration in the soil-plant system and accumulation ability
in plants during the sludge compost land use process. The results indicated that the
concentrations THg and MeHg in soil increased after applying sewage sludge compost
products, while the THg level was still lower than the secondary standard of national
soil environmental quality. Biochar was speculated to probably promote the soil mercury
methylation with lower MeHg/THg ratios in different soil treatments. THg concentrations
in mature plants were significantly lower than those in seedling stage, but MeHg levels
were higher than those in seedling stage. An obvious influence of composting on MeHg
enrichment in plants was observed, and this similar effect was not found for THg
enrichment. MeHg concentration in the soils applied with biochar compost was
significantly higher than that without applying biochar compost soil, while MeHg in plant
presented a contrary trend with higher level observed in no-biochar compost soil,
suggesting that the addition of biochar could be in favour of soil MeHg formation and
inhibit the MeHg accumulation in plants by influencing its migration. Since a strong MeHg
accumulation ability with BCF of 1.24-14.63 was present in plant, the mercury ecological
risk in soil environment caused by long-term fertilizing should be noticed. © 2017,
Science Press. All right reserved.
Number of references:33
Main heading:Soil pollution
Controlled terms:Alkylation - Composting - Land use - Mercury (metal) - Plants (botany) -
Sewage sludge - Soils
Uncontrolled terms:Accumulation - Bio chars - Compost products - Methyl mercury - Plant -
Total mercuries
Classification code:403 Urban and Regional Planning and Development - 452.2 Sewage
Treatment - 483.1 Soils and Soil Mechanics - 549.3 Nonferrous Metals and Alloys
excluding Alkali and Alkaline Earth Metals - 802.2 Chemical Reactions
DOI:10.13227/j.hjkx.201606045
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 120>
Accession number:20171003409573
Title:Accumulation and biotransformation in typical freshwater algae species influenced
by titanium dioxide nanoparticles under long-term exposure
Authors:Li, Jin-Li (1, 3); Wang, Zhen-Hong (2, 3); Yan, Ya-Meng (3); Huang, Bing (1);
Luo, Zhuan-Xi (3)
Author affiliation:(1) Faculty of Environmental Science and Engineering, Kunming
University of Science and Technology, Kunming; 650500, China; (2) Fujian Province Key
Laboratory of Modern Analytical Science and Separation Technology, College of Chemistry
and Environment, Minnan Normal University, Zhangzhou; 363000, China; (3) Key Laboratory
of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of
Sciences, Xiamen; 361021, China
Corresponding author:Luo, Zhuan-Xi(zxluoire@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:832-836
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In the present study, the accumulation and biotransformation of arsenate in
typical freshwater algae species were examined under long-term influence of titanium
dioxide nanoparticles (nano-TiO<inf>2</inf>). Results showed that different algae species
had largely varied capacities of accumulation and biotransformation of arsenate. The
arsenic accumulation reached (819.66±11.25) μg·g<sup>-1</sup>DW in
Scenedesmus obliquus, which was higher than that in Microcystis aeruginosa of
(355.95±8.31) μg·g<sup>-1</sup>DW. Nano-TiO<inf>2</inf>increased arsenic
accumulation in these exposed algae species, and then reduced arsenic levels in the
relative culture media. Furthermore, nano-TiO<inf>2</inf>improved arsenic
biotransformation in the exposed algae, and the organic arsenic was dimethylarsinous acid
(DMA) and monomethylarsonous acid (MMA) in Microcystis aeruginosa and Scenedesmus
obliquus, respectively. Additionally, the release of organic arsenic was lower from the
exposed algae in nano-TiO<inf>2</inf>treatments than in the control, indicating that
nano-TiO<inf>2</inf>couldn't stimulate the release of organic arsenic from algae under
long-term exposure. These results could improve insights on the ecological risk of nano-
TiO<inf>2</inf>associated with arsenic in the environment. © 2017, Science Press.
All right reserved.
Number of references:26
Main heading:Algae
Controlled terms:Arsenic - Bacteria - Bioconversion - Nanoparticles - Oxides - Titanium -
Titanium dioxide - Water
Uncontrolled terms:Arsenate - Dimethylarsinous acid - Long term exposure - Microcystis
aeruginosa - Monomethylarsonous acids - Scenedesmus obliquus - Speciation - Titanium
dioxide nanoparticles
Classification code:542.3 Titanium and Alloys - 761 Nanotechnology - 801.2
Biochemistry - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 933 Solid
State Physics
DOI:10.13227/j.hjkx.201608134
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 121>
Accession number:20171003409554
Title:Start-up of combined floc-granule CANON process and the effects of SRT on reactor
performance
Authors:Sun, Yan-Fang (1); Han, Xiao-Yu (2, 3, 4); Zhang, Shun-Jun (3, 4); Li, Xing (1);
Cao, Xiang-Sheng (1)
Author affiliation:(1) Key Laboratory of Beijing for Water Quality Science and Water
Environmental Recovery Engineering, College of Architecture and Civil Engineering,
Beijing University of Technology, Beijing; 100124, China; (2) College of Resources and
Environmental Engineering, Harbin Institute of Technology, Harbin; 150090, China; (3)
Research and Development Center of Beijing Drainage Group Technology, Beijing; 100022,
China; (4) Beijing Engineering Research Center for Wastewater Reuse, Beijing; 100124,
China
Corresponding author:Cao, Xiang-Sheng(caxish@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:672-678
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To shorten the start-up time of CANON process and guide the sludge dischargement
in the practical project, the start-up of CANNON process and influence of different flocs
SRT were studied by inoculation ANAMMOX granules of different proportions in two same
specifications of SBR reactor. During the experiment, the temperature was controlled at
30℃±1℃ and pH was 7-8. The results showed that it was not good for
CANON process rapid start-up when the two reactors were inoculated with 5% and 10%
ANAMMOX granules respectively and the initial FA concentration exceeded 44
mg·L<sup>-1</sup>. When the two reactors were inoculated with 5% and 10% ANAMMOX
granular sludge, the reactors were started-up successfully on Day 46 and Day 35,
respectively. When the flocs SRT was maintained at 30 d, 90 d and un-initiative discharge
respectively, the average total nitrogen removal rate could reach 0.35 kg·
(m<sup>3</sup>·d)<sup>-1</sup>stably. The quantitative PCR results of the three
different flocs SRT showed that with increasing flocs SRT, the abundance of AOB was
relatively stable, the abundance of ANAMMOX increased slightly, while the abundance of
NOB significant increased. Therefore, it is necessary to elutriate flocs from reactor for
decreasing the quantity of NOB and long-term stable operation of the CANON process.
© 2017, Science Press. All right reserved.
Number of references:23
Main heading:Nitrogen removal
Controlled terms:Granular materials - Granulation - Nitrogen - Polymerase chain reaction
- Reactor startup - Wastewater treatment
Uncontrolled terms:Autotrophic nitrogen removal - Different proportions - Granular sludge
- Practical projects - Quantitative PCR - Reactor performance - Sludge retention time -
Total nitrogen removal
Classification code:452.4 Industrial Wastes Treatment and Disposal - 621 Nuclear
Reactors - 801.2 Biochemistry - 802.3 Chemical Operations - 804 Chemical Products
Generally - 951 Materials Science
Numerical data indexing:Mass_Density 4.40e-02kg/m3, Percentage 1.00e+01%, Percentage
5.00e+00%
DOI:10.13227/j.hjkx.201608108
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 122>
Accession number:20171003409547
Title:Impact of ammonia and H<inf>2</inf>O<inf>2</inf>on bromate and disinfection by-
products control
Authors:Wang, Yong-Jing (1, 2); Du, Xu (1); Jin, Meng (1); Feng, Si-Jie (1); Yang, Kai
(2, 3); Zhang, Ming-Lu (1); Yu, Jian-Wei (2, 3)
Author affiliation:(1) Department of Environmental Science and Engineering, School of
Food and Chemical Engineering, Beijing Technology and Business University, Beijing;
100048, China; (2) Key Laboratory of Drinking Water Science and Technology, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085,
China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Yu, Jian-Wei(jwyu@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:616-621
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A pilot-scale study with conventional water treatment and ozone-biological
activated carbon (O<inf>3</inf>-BAC) treatment was conducted to evaluate the impact of
ammonia and hydrogen peroxide (H<inf>2</inf>O<inf>2</inf>) addition on the bromate and
disinfection by-products formation potential (DBPFP) control, with bromide containing
water as raw water. It was found that bromate concentration would exceed 10.00
μg·L<sup>-1</sup>as ozone doses were higher than 1.0 mg·L<sup>-
1</sup>under different water qualities. Ammonia and H<inf>2</inf>O<inf>2</inf>could
effectively control bromate formation and bromate concentration decreased as ammonia and
H<inf>2</inf>O<inf>2</inf>doses increased. Bromate concentration could be controlled
below 10.00 μg·L<sup>-1</sup>as ammonia dose was 0.10-0.30 mg·L<sup>-
1</sup>or the m(H<inf>2</inf>O<inf>2</inf>)/m(O<inf>3</inf>) was 0.2-1.0. However, as
ammonia-H<inf>2</inf>O<inf>2</inf>was combined for the same purpose, bromate increased
firstly and then decreased. Ammonia addition would not significantly affect the THMFP
control but H<inf>2</inf>O<inf>2</inf>application would depress the efficiency of THMFP
removal. © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Ozone water treatment
Controlled terms:Activated carbon - Activated carbon treatment - Ammonia - Disinfection -
Hydrogen peroxide - Oxidation - Ozone - Peroxides - Water quality - Water treatment
Uncontrolled terms:Biological activated carbon - Bromate - Bromate formation -
Conventional water treatment - Disinfection by-product - Disinfection by-products
formation potential - Pilot-scale study - Trihalomethanes
Classification code:445.1 Water Treatment Techniques - 445.2 Water Analysis - 802.2
Chemical Reactions - 804 Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 1.00e-03kg/m3, Mass_Density 1.00e-04kg/m3 to 3.00e-
04kg/m3, Mass_Density 1.00e-05kg/m3
DOI:10.13227/j.hjkx.201605091
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 123>
Accession number:20171003409549
Title:Adsorptive remediation of Cr(VI) contaminated groundwater with chemically
synthesized schwertmannite
Authors:Zhu, Li-Chao (1); Liu, Yuan-Yuan (1); Li, Wei-Min (1); Mou, Hai-Yan (1, 2); Wang,
Wan-Yu (1); Shi, De-Zhi (1); Wang, Tao (1)
Author affiliation:(1) Key Laboratory of the Three Gorges Reservoir Region's Eco-
Environment, Ministry of Education, Chongqing University, Chongqing; 400044, China; (2)
College of Architecture and Environment, Sichuan University, Chengdou; 610065, China
Corresponding author:Liu, Yuan-Yuan(liuyuanyuan@cqu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:629-639
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Schwertmannite is usually naturally found in acidic mining wastewater and
frequently used in the adsorption of heavy metal anions from water and wastewater.
Schwertmannite was synthesized through a facile chemical method and utilized to remove
Cr(VI) from contaminated groundwater. The kinetics, thermodynamics and isotherms, as well
as the effects of environmental factors on the Schwertmannite adsorption processes were
investigated. The experimental results showed that the synthesized Schwertmannite had a
strong adsorption capability of Cr(VI) from aqueous solution. At the pre-set initial
concentrations of Cr(VI), the Schwertmannite adsorption of Cr(VI) achieved equilibrium
within 24 h, and the Lagergren's second-order model fitted the adsorption process better
compared to Lagergren's first-order model and intraparticle diffusion model. Langmiur
equation fitted the adsorption isotherms better than Freundlich equation. The Cr(VI)
adsorption on Schwertmannite mainly involved ion exchange reaction between Cr(VI) and
anions such as OH<sup>-</sup>and SO<inf>4</inf><sup>2-</sup>and surface complexation
reactions. The ΔH<sup>θ</sup>and ΔG<sup>θ</sup>were 6.368
kJ·mol<sup>-1</sup>and -1.215 kJ·mol<sup>-1</sup>, respectively, therefore
the adsorption of Cr(VI) was a spontaneous and endothermic process. The removal of Cr(VI)
from aqueous solution increased with increasing Schwertmannite dosage at pH =4.5. Acidic
pH in the range of 4.5-6 favored Cr(VI) removal with Schwertmannite compared to that
under basic conditions. Under the conditions of 5 mg·L<sup>-1</sup>of initial Cr
(VI) concentration, 0.5 g·L<sup>-1</sup>of Schwertmannite dosage, pH=6, maximum
Cr(VI) removal of 93.1% was achieved and the adsorption capacity of Cr(VI) with
Schwertmannite reached up to 40.4 mg·g<sup>-1</sup>. Batch tests showed that the
presence of HCO<inf>3</inf><sup>-</sup>and SO<inf>4</inf><sup>2-</sup>inhibited the
adsorption of Cr(VI) while Cl<sup>-</sup>had no significant impact. Cations and natural
organic matter had a pH-dependent impact on Cr(VI) removal: at pH=8 natural organic
matter and cations would significantly inhibit the Cr(VI) sorption, while the impact
could be neglected at weak acidic conditions (pH=6). © 2017, Science Press. All
right reserved.
Number of references:28
Main heading:Chromium
Controlled terms:Adsorption - Biogeochemistry - Biological materials - Chromium compounds
- Complexation - Groundwater - Groundwater pollution - Heavy metals - Hydrochemistry -
Ion exchange - Ions - Organic compounds - pH - Positive ions - Remediation - Solutions -
Surface reactions - Synthesis (chemical) - Thermodynamics
Uncontrolled terms:Adsorption capability - Contaminated groundwater - Environmental
factors - Intraparticle diffusion models - Ion exchange reactions - Natural organic
matters - Schwertmannite - Surface complexation reactions
Classification code:444.2 Groundwater - 454.2 Environmental Impact and Protection -
461.2 Biological Materials and Tissue Engineering - 481.2 Geochemistry - 531
Metallurgy and Metallography - 543.1 Chromium and Alloys - 641.1 Thermodynamics - 801.1
Chemistry, General - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804.1
Organic Compounds
Numerical data indexing:Mass_Density 5.00e-01kg/m3, Percentage 9.31e+01%, Time 8.64e+04s
DOI:10.13227/j.hjkx.201608044
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 124>
Accession number:20171003416388
Title:Particle size distribution and diffusion for simulated cooking fume
Authors:Li, Shuang-De (1); Xu, Jun-Bo (1); Mo, Sheng-Peng (1, 2); Li, Wen-Hui (1, 2);
Gao, Jia-Jia (3); Cao, Ya-Qun (3); Chen, Yun-Fa (1)
Author affiliation:(1) State Key Laboratory of Multi-phase Complex Systems, Institute of
Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China; (2) University
of Chinese Academy of Sciences, Beijing; 100190, China; (3) Key Laboratory of Healthy
& Intelligent Kitchen System Integration, Ningbo; 315336, China
Corresponding author:Chen, Yun-Fa(yfchen@ipe.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:33-40
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Studying particle size distribution and dispersion characteristics of cooking
oil fume can help to analyze the influence of the particles on indoor air quality and the
health of the residents. Electrical low pressure impactor (ELPI) was employed to measure
the number and mass concentration of the particles size range of 0.03-10 μm at two
different locations in the kitchen space with smoke exhaust on and off, respectively. The
cooking particles were mostly located at below 655 nm. The smoke exhaust with open
condition could remarkably decrease the kitchen's cooking fume. The number concentration
of particles decreased from 2.8×10<sup>6</sup>cm<sup>-3</sup>to
2.3×10<sup>5</sup>cm<sup>-3</sup>, and PM<inf>2.5</inf>(aerodynamics diameter
≤2.5 μm particulate matter) mass concentrations decreased from 85.9
mg·m<sup>-3</sup>to 6.2 mg·m<sup>-3</sup>. The sucking efficiency of smoke
exhaust for PM<inf>10</inf>was higher than PM<inf>2.5</inf>. The number concentration of
particles could be declined by 65%, and the cooking fume of PM<inf>2.5</inf>could be
declined by 75% during the diffusion process detected at the area of 3 m far away from
the area where cooking took place. The distribution of PM<inf>2.5</inf>mass concentration
field of oil fume was simulated by computational fluid dynamics. The temperature field
distribution of oil fume was monitored by infrared camera, presenting sector diffusion
with the temperature decreasing from 70℃ to room temperature. © 2017, Science
Press. All right reserved.
Number of references:24
Main heading:Particle size analysis
Controlled terms:Air quality - Computational fluid dynamics - Diffusion - Indoor air
pollution - Light transmission - Oils and fats - Particle size - Particles (particulate
matter) - Size distribution - Smoke - Temperature - Temperature distribution
Uncontrolled terms:Dispersion characteristics - Electrical low-pressure impactor - Fume
particles - Indoor air quality - Mass concentration - Number concentration - Particulate
Matter - Temperature field distribution
Classification code:451 Air Pollution - 451.2 Air Pollution Control - 641.1
Thermodynamics - 723.5 Computer Applications - 741.1 Light/Optics - 804.1 Organic
Compounds - 922.2 Mathematical Statistics - 951 Materials Science
Numerical data indexing:Percentage 6.50e+01%, Percentage 7.50e+01%, Size 3.00e+00m, Size
3.00e-08m to 1.00e-05m, Size 6.55e-07m
DOI:10.13227/j.hjkx.201605110
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 125>
Accession number:20171003409571
Title:Effects of continuous application of sewage sludge compost on heavy metals
accumulation and mobility characteristics in soil profile and on heavy metals uptake of
wheat
Authors:Sun, Na (1); Shang, He-Ping (1); Ru, Shu-Hua (2); Su, De-Chun (1)
Author affiliation:(1) College of Resource and Environment Sciences, China Agricultural
University, Beijing; 100193, China; (2) Institute of Agro-resource and Environment, Hebei
Academy of Agriculture and Forestry Sciences, Shijiazhuang; 050051, China
Corresponding author:Su, De-Chun(dcsu@cau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:815-824
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The use of sewage sludge compost(SSC)as fertilizer may cause increased leaching
due to its high content of heavy metals and thus pose a threat to groundwater quality.
The effect of SSC application on heavy metals leaching in calcareous soils has been
studied in field trials, which provides basis for determining heavy metals environmental
capacity and preventing metal pollution in farmland soil scientifically. The results
indicated that the contents of Cu, Zn elevated obviously with the increase of the age and
the dosage of SSC utilization in the topsoil(0-15 cm) under 4-year continuous application
of SSC. Under higher levels of the compost treatment, the heavy metals Cu and Zn were
found to migrate into the 15-30 cm soil and 60-90 cm soil under the experimental
condition. Nevertheless, the majority of Cu and Zn from SSC accumulated in topsoil and
the highest accumulation rates could reach 75.3% for Cu and 85.9% for Zn. The contents of
Cd, Pb increased significantly in topsoil after 4-year continuous application of SSC, and
their increases could reach 57.2%-165.2% for Cd and 13%-34% for Pb compared with CK. At
60-90 cm soil, the contents of Cr, As and Pb were also significantly higher than those in
CK treatment. Application of SSC not only caused accumulation of some heavy metals in
topsoil but also leached heavy metals located in the subsurface soil down in this
experiment. Continuous utilization of SSC increased Zn concentration of wheat grain, and
the increase could reach 13.3%-47.9%. For the concentrations of Cr and Pb in wheat grain,
the values exceeded the national food and healthy standards value (GB 2762-2012) in part
of compost treatments. The cumulative ratio of heavy metals carried out by wheat were all
below 10% after 4-year experiment, wheat grain carried much more Cu, Zn out than wheat
straw, but it was opposite for Cr, As, Cd, Pb. The cumulative ratio of heavy metals
carried by wheat decreased with the increasing level of SSC utilization. The amounts of
heavy metals migrated to deeper soil should be considered when determining the
environmental capacity of heavy metals in farmland soil. © 2017, Science Press. All
right reserved.
Number of references:41
Main heading:Soil pollution
Controlled terms:Cadmium - Carrier mobility - Composting - Copper - Farms - Grain
(agricultural product) - Groundwater - Heavy metals - Leaching - Lead - Sewage sludge -
Soils - Water quality - Zinc
Uncontrolled terms:Accumulation rates - Cumulative ratios - Environmental capacity -
Experimental conditions - Mobility characteristics - Sewage sludge compost - Soil
profiles - Wheat
Classification code:444.2 Groundwater - 445.2 Water Analysis - 452.2 Sewage Treatment
- 483.1 Soils and Soil Mechanics - 531 Metallurgy and Metallography - 544.1 Copper -
546.1 Lead and Alloys - 546.3 Zinc and Alloys - 549.3 Nonferrous Metals and Alloys
excluding Alkali and Alkaline Earth Metals - 712.1 Semiconducting Materials - 802.3
Chemical Operations - 821 Agricultural Equipment and Methods; Vegetation and Pest
Control - 821.4 Agricultural Products
Numerical data indexing:Age 4.00e+00yr, Percentage 1.00e+01%, Percentage 1.30e+01% to
3.40e+01%, Percentage 1.33e+01% to 4.79e+01%, Percentage 5.72e+01% to 1.65e+02%,
Percentage 7.53e+01%, Percentage 8.59e+01%, Size 0.00e+00m to 1.50e-01m, Size 1.50e-01m
to 3.00e-01m, Size 6.00e-01m to 9.00e-01m
DOI:10.13227/j.hjkx.201608031
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 126>
Accession number:20171003409543
Title:Efficiency and mechanism of nitrogen and phosphorus removal in modified zeolite
wetland
Authors:Wu, Peng (1); Lu, Shuang-Jun (2); Xu, Le-Zhong (1); Liang, Qi-Qi (1); Shen, Yao-
Liang (1, 3, 4)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Suzhou Environmental Science
Research Institute, Suzhou; 215004, China; (3) Jiangsu Collaborative Innovation Center of
Technology and Material of Water Treatment, Suzhou; 215009, China; (4) Jiangsu Provincial
Key Laboratory of Environmental Science and Engineering, Suzhou; 215009, China
Corresponding author:Shen, Yao-Liang(ylshen@mail.usts.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:580-588
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To study the efficiency and mechanism of nitrogen and phosphorus removal for
decentralized rural sewage in modified zeolite wetland, the modified zeolite was applied
as substrate into a combined process composed of anaerobic baffled reactor (ABR) and
baffled flow constructed wetland (BFCW), providing a new way for rural sewage treatment
in Suzhou City. The study was contrasted with zeolite wetland. The results showed that
the modified zeolite wetland had high efficiency and stability of nitrogen and phosphorus
removal, and the nitrogen and phosphorus removal quantities of modified zeolite wetland
were 1.8% and 1 times higher than those of zeolite wetland during the trial. The modified
zeolite wetland mainly removed nitrogen and phosphorus by substrate adsorption, and the
main fractions of modified zeolite were Ca-P and Al-P. The oxygen-secretion and
absorption of plants stabilized the water quality of the effluent. The substrate
adsorption was the main nitrification removal pathway in front of the wetland, and
nitrification and denitrification were the main nitrification removal pathways at the end
of the wetland. The nitrogen and phosphorus adsorption capacities during the pilot test
were much higher than those of the static test. The optimization of phosphorus adsorption
capacity for modified zeolite was achieved under the synergy of multiple pathways. The
effect of configuration and plant root was the main reason for the difference of nitrogen
and phosphorus adsorption quantities. Nitrification intensity led to the seasonal
fluctuation of nitrogen removal effect and stability in modified zeolite wetland, and the
low nitrification intensity in the front of wetland was related to the strong adsorption
of NH<inf>4</inf><sup>+</sup>-N by the modified zeolite. © 2017, Science Press. All
right reserved.
Number of references:14
Main heading:Nitrogen removal
Controlled terms:Adsorption - Efficiency - Effluents - Mechanisms - Nitrification -
Nitrogen - Phosphorus - Rural areas - Sewage treatment - Water absorption - Water
quality - Wetlands - Zeolites
Uncontrolled terms:Anaerobic baffled reactor - Constructed wetlands - Modified zeolite -
Nitrification and denitrification - Nitrogen and phosphorus - Nitrogen and phosphorus
removal - Phosphorus adsorption - Rural sewages
Classification code:445.2 Water Analysis - 452.2 Sewage Treatment - 452.3 Industrial
Wastes - 601.3 Mechanisms - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804
Chemical Products Generally - 804.2 Inorganic Compounds - 913.1 Production Engineering
Numerical data indexing:Percentage 1.80e+00%
DOI:10.13227/j.hjkx.201607190
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 127>
Accession number:20171003416411
Title:Enhanced treatment of petrochemical secondary effluent by biological aerated filter
(Fe<sup>2+</sup>)-ozonation process
Authors:Xu, Min (1, 2); Wu, Chang-Yong (2); Zhou, Yue-Xi (2); Guo, Ming-Kun (3); Wang, Yi
(4)
Author affiliation:(1) College of Water Science, Beijing Normal University, Beijing;
100875, China; (2) Research Center of Water Pollution Control Technology, Chinese
Research Academy of Environmental Sciences, Beijing; 100012, China; (3) College of Earth
Science and Environment Engineering, Southwest Jiaotong University, Chengdu; 611756,
China; (4) School of Environmental and Municipal Engineering, Lanzhou Jiaotong
University, Lanzhou; 730070, China
Corresponding author:Zhou, Yue-Xi(zhouyuexi@263.net)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:229-237
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Two parallel biological aerated filters (BAF)-ozonation, named as number 1
(feeding with FeSO<inf>4</inf>·7H<inf>2</inf>O) and number 2, were used to treat
petrochemical secondary effluent. The effect of FeSO<inf>4</inf>·7H<inf>2</inf>O
on COD and phosphorus removal by BAF-ozonation was studied. Molecular weight
distribution, three-dimensional fluorescence scan and gas chromatography-mass
spectrometry (GC-MS) were used to analyze water quality before and after BAF-ozonation.
The results showed the average COD and TP concentrations were 82.91 mg·L<sup>-
1</sup>and 1.37 mg·L<sup>-1</sup>, respectively. When the dosage of
FeSO<inf>4</inf>·7H<inf>2</inf>O was 9 mg·L<sup>-1</sup>, the average
removal rates of COD and TP were 52.20% and 71.50%, respectively. The average COD removal
rate in number 1 combined process was 17.15%, which was higher than that in number 2
combined process. The TP removal rate in number 1 combined process was increased by
51.81%. The percentage of dissolved organic matters with relative molecular weight less
than 1×10<sup>3</sup>was 52% in the raw wastewater. However, the percentage
increased to 75% when treated by number 1 combined process and the removal rate of
various molecular weight organics was increased. Three-dimensional fluorescence analysis
showed that the dosage of FeSO<inf>4</inf>·7H<inf>2</inf>O could improve the
removal of fluorescent substances. GC-MS results showed that the number and concentration
of organics were reduced after number 1 combined process in comparison with number 2
combined process. BAF-ozone could be enhanced by FeSO<inf>4</inf>·7H<inf>2</inf>O
when treating petrochemical secondary effluent. © 2017, Science Press. All right
reserved.
Number of references:38
Main heading:Effluents
Controlled terms:Bandpass filters - Barium compounds - Biofilters - Biogeochemistry -
Biological materials - Effluent treatment - Fluorescence - Gas chromatography - Mass
spectrometry - Molecular weight - Molecular weight distribution - Organic compounds -
Ozone - Ozone water treatment - Ozonization - Passive filters - Petrochemicals - Water
quality
Uncontrolled terms:Advanced treatment - Biological aerated filter - Biological aerated
filters (BAF) - Dissolved organic matters - Gas chromatography-mass spectrometries (GC-
MS) - Phosphorus removal - Secondary effluent - Three-dimensional fluorescences
Classification code:445.2 Water Analysis - 452.3 Industrial Wastes - 452.4 Industrial
Wastes Treatment and Disposal - 461.2 Biological Materials and Tissue Engineering -
703.2 Electric Filters - 741.1 Light/Optics - 801 Chemistry - 801.2 Biochemistry -
802.2 Chemical Reactions - 802.3 Chemical Operations - 804 Chemical Products Generally
- 804.1 Organic Compounds - 931.3 Atomic and Molecular Physics
Numerical data indexing:Mass_Density 1.37e-03kg/m3, Mass_Density 8.29e-02kg/m3,
Mass_Density 9.00e-03kg/m3, Percentage 1.71e+01%, Percentage 5.18e+01%, Percentage 5.20e
+01%, Percentage 5.22e+01%, Percentage 7.15e+01%, Percentage 7.50e+01%
DOI:10.13227/j.hjkx.201606197
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 128>
Accession number:20172603860983
Title:Reducing Effect of Three Disinfection Technologies for Sulfonamides Resistance
Genes
Authors:Zheng, Ji (1); Zhou, Zhen-Chao (1); Chen, Fang (2); Chen, Tao (1); Wei, Yuan-Yuan
(1); Han, Yue (1); Chen, Hong (1)
Author affiliation:(1) Institute of Environmental Engineering, College of Environmental
and Resource Sciences, Zhejiang University, Hangzhou; 310058, China; (2) Hangzhou
Environmental Monitoring Center, Hangzhou; 310007, China
Corresponding author:Chen, Hong(chen_hong@zju.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1497-1505
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Antibiotic resistance genes (ARGs) in the environment have gradually engendered
extensive concern recently due to the harm caused to environment and human beings. In
this study, two sulfonamides resistant bacteria isolated from secondary effluents of a
municipal wastewater treatment plant were used to compare the efficacy of three different
disinfection processes (chlorination, ultraviolet and ozone) in reducing sulfonamides
resistance pollution using serial dilution plate counting method and qPCR. The behavior
characteristics of sulfonamides resistance genes during the disinfection process were
elucidated using disinfection+DNase I treatment. The results showed that all three
disinfection techniques could reduce the concentration of target bacteria, but the
abundance of sulfonamides resistance genes was still at a high level. Furthermore,
chlorination disinfection might reduce sulfonamides resistance genes by reducing
microbial biomass. Ultraviolet disinfection could damage genes directly. However, during
ozone disinfection, sulfonamides resistance genes would escape to environment, and its
potential environmental risks could not be ignored. © 2017, Science Press. All right
reserved.
Number of references:28
Main heading:Wastewater treatment
Controlled terms:Amides - Antibiotics - Bacteria - Chlorination - Disinfection -
Effluents - Genes - Ozone - Ozone resistance - Polymerase chain reaction - Sulfur
compounds
Uncontrolled terms:Antibiotic resistance genes - Behavior characteristic - Disinfection
process - Dnase i - Municipal wastewater treatment plants - Real-time quantitative PCR -
Sulfonamides - Ultraviolet disinfections
Classification code:452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and
Disposal - 461.2 Biological Materials and Tissue Engineering - 461.6 Medicine and
Pharmacology - 801.2 Biochemistry - 802.2 Chemical Reactions - 804 Chemical Products
Generally - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201610059
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 129>
Accession number:20172603860961
Title:Characteristics of the Size Distribution of Water Soluble Inorganic Ions in Sanya,
Hainan
Authors:Wang, Lu (1, 2); Liu, Zi-Rui (1); Wen, Tian-Xue (1); Miao, Hong-Yan (1); Wang,
Yue-Si (1)
Author affiliation:(1) State Key Laboratory of Atmospheric Boundary Layer Physics and
Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of
Sciences, Beijing; 100029, China; (2) University of Chinese Academy of Sciences, Beijing;
100049, China
Corresponding author:Liu, Zi-Rui(lzr@dq.cern.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1298-1306
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Size-resolved filter samples were collected in Sanya every other week from June
2012 to May 2014. The mass concentrations of water-soluble inorganic ions, including
anions (Cl<sup>-</sup>, NO<inf>3</inf><sup>-</sup>, SO<inf>4</inf><sup>2-</sup>) and
cations (Na<sup>+</sup>, NH<inf>4</inf><sup>+</sup>, K<sup>+</sup>, Mg<sup>2+</sup>,
Ca<sup>2+</sup>) were measured by ion chromatography. The results showed that the total
concentrations of measured water-soluble inorganic ions were (8.91±7.27) and
(11.34±9.37) μg·m<sup>-3</sup>in PM<inf>2.1</inf>and PM<inf>2.1-9</inf>,
respectively. In PM<inf>2.1</inf>, SO<inf>4</inf><sup>2-</sup>and NH<inf>4</inf><sup>
+</sup>comprised 72.2% of all water-soluble inorganic ions, while in PM<inf>2.1~9</inf>,
Cl<sup>-</sup>, Ca<sup>2+</sup>and Na<sup>+</sup>comprised 67.6% of all water-soluble
inorganic ions. In PM<inf>2.1</inf>, the total concentrations of water-soluble inorganic
ions had highest concentrations in winter and lowest concentrations in summer. In
PM<inf>2.1~9</inf>, the total concentrations of water-soluble inorganic ions presented
the highest concentrations in summer. SO<inf>4</inf><sup>2-</sup>and NH<inf>4</inf><sup>
+</sup>showed bimodal size distributions and the peaks in the fine mode shifted from
0.43-0.65 μm in spring, summer and autumn to 0.65-1.1 μm in winter.
NO<inf>3</inf><sup>-</sup>, Na<sup>+</sup>, Cl<sup>-</sup>, Ca<sup>2+</sup>and
Mg<sup>2+</sup>were unimodal with the peaks in the coarse mode of 4.7-9.0 μm. K<sup>
+</sup>showed bimodal size distribution with the fine mode at 0.43-0.65 μm and the
coarse mode at 4.7-5.8 μm. PCA analysis showed that water-soluble inorganic ions were
mainly affected by the secondary formation, sea salt and soil particles or falling dust.
© 2017, Science Press. All right reserved.
Number of references:39
Main heading:Ions
Controlled terms:Calcium - Ion chromatography - Size distribution
Uncontrolled terms:Bimodal size distribution - Filter sample - Mass concentration - PCA
analysis - Sanya - Seasonal variation - Soil particles - Water soluble inorganic ions
Classification code:549.2 Alkaline Earth Metals - 801 Chemistry - 922.2 Mathematical
Statistics
Numerical data indexing:Percentage 6.76e+01%, Percentage 7.22e+01%, Size 4.30e-07m to
6.50e-07m, Size 4.70e-06m to 5.80e-06m, Size 4.70e-06m to 9.00e-06m, Size 6.50e-07m to
1.10e-06m
DOI:10.13227/j.hjkx.201608081
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 130>
Accession number:20172603860976
Title:Pollution Characteristics and Risk Assessment of Heavy Metals from River Network
Sediment in Western Area of Taihu Lake
Authors:Bian, Bo (1, 2); Zhou, Yan (1, 3); Zhang, Qin (1, 3)
Author affiliation:(1) Jiangsu Academy of Environmental Science, Nanjing; 210036, China;
(2) Jiangsu Province Key Laboratory of Environmental Engineering, Nanjing; 210036, China;
(3) College of Environment, Hohai University, Nanjing; 210098, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1442-1450
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:River sediments is a valuable environmental medium for characterizing
contamination of heavy metals in the western areas of Taihu Basin and the associated
risks to human health. We collected samples of typical inflow river sediments from
nineteen sites during different water periods. The results showed that the concentrations
of heavy metals in the river sediments followed the order of
Zn>Cr>Cu>Pb>Ni>As>Cd>Hg. Compared to the background concentrations,
the mean concentrations of Zn, Cd, Cu, Ni and Pb seriously exceeded the standard values.
Except for As, the highest concentrations of heavy metals (Zn, Cr, Cu, Pb, Ni, Cd, Hg)
were found in the samples from normal water period. The metal (Cd) presented moderate
pollution degree and ecological risks,and the RI value of Cd accounted for about 47% of
the total RI value. The mPEC-Q values of the sediments were in the range of 0.12-0.76,
and the mean value was 0.3, indicating that the sediments in all of the sampling sites
had a 15%-29% probability of toxicity. In terms of the highest value of the heavy metals,
higher concentrations, I<inf>geo</inf>, mPEC-Q and PCA values were found at the S2
sampling sites. The results showed that effects of synergism of heavy metals pollutants
on the point were found in the paper, which will provide scientific basis for control of
heavy metal pollution in the Taihu Basin. © 2017, Science Press. All right reserved.
Number of references:31
Main heading:River pollution
Controlled terms:Cadmium - Copper - Health risks - Heavy metals - Lake pollution - Lead -
Nickel - Pollution - Pollution control - Risk assessment - Rivers - Sediments - Water
pollution - Water resources - Zinc
Uncontrolled terms:Background concentration - Different water periods - Ecological risks
- Environmental medium - Heavy metal pollution - Mean concentrations - Pollution degree -
River sediments
Classification code:444 Water Resources - 453 Water Pollution - 461.7 Health Care -
483 Soil Mechanics and Foundations - 531 Metallurgy and Metallography - 544.1 Copper -
546.1 Lead and Alloys - 546.3 Zinc and Alloys - 548.1 Nickel - 549.3 Nonferrous
Metals and Alloys excluding Alkali and Alkaline Earth Metals - 914.1 Accidents and
Accident Prevention
Numerical data indexing:Percentage 1.50e+01% to 2.90e+01%, Percentage 4.70e+01%
DOI:10.13227/j.hjkx.201608078
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 131>
Accession number:20171003409538
Title:Succession pattern of phytoplankton of Daning River in the Three Gorges Reservoir
and its driving factors
Authors:Zhang, Jia-Lei (1); Zheng, Bing-Hui (2); Liu, De-Fu (1); Wang, Li-Jing (2); Tan,
Qian-Ru (1)
Author affiliation:(1) Key Laboratory of Ecological Remediation of Lakes and Rivers and
Algal Utilization of Hubei Province, College of Civil and Environmental, Hubei University
of Technology, Wuhan; 430068, China; (2) State Key Laboratory of Environmental Criteria
and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water
Source Protection, Chinese Research Academy of Environmental Sciences, Beijing; 100012,
China
Corresponding author:Zheng, Bing-Hui(zhengbh@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:535-546
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To elucidate succession pattern of phytoplankton in the Daning River and its
driving factors, multivariate statistical analysis was conducted. By using the monitoring
data in different seasons of Daning river during April 2012 to January 2013, this paper
analyzed the succession pattern of phytoplankton in the Daning River and its driving
factors in typical tributaries of river-style reservoirs. According to the
characteristics of water level, the operational period of the TGR was classified into
following four stages: stage I (pre-November-April), stage II (May-July), stage III
(July-September) and stage IV (September-November). (1)The results indicated that the
values of Chlorophyll-a concentrations and algal density showed similar seasonal
variations, with the highest values occurring in stage III, followed by stages IV, II and
I. Succession of C-R-S growth strategies was the same generally: CR-R type dominated in
stage I, CS, CR/CS and R-CR dominated in stage II, III and IV, respectively. (2)The mean
values of Margalef index and Pielou index in stage IV and III were significantly greater
than those in stage II and I; the value of Shannon-waver index showed that the highest
value in stage III, followed in a descending order by stage I, II and IV; the
successional rate had the highest value in stage IV, followed in descending order by
stage III, I and II. (3) The results of Correlation analysis suggested that no
significant relationships were observed between the environmental parameters and
phytoplankton abundance in stage I. The results indicated that relative water column
stability(RWCS), index of feasible energy for phytoplankton (E<inf>t</inf>) and index of
feasible energy (Ef<sup>*</sup>) were key regulatory factors for phytoplankton community
in stage I. The results indicated that E<inf>t</inf>, Ef<sup>*</sup>and total phosphorus
(TP) were key regulatory factors for phytoplankton abundance in stage II. The results of
the redundancy analysis (RDA) suggested that RWCS, TP and the ratio of euphotic depth
[D<inf>eu</inf>(λ<inf>PAR</inf>)] to mixing depth (D<inf>mix</inf>)
[D<inf>eu</inf>(λ<inf>PAR</inf>)/D<inf>mix</inf>] were key regulatory factors for
phytoplankton community composition in stage II. The results indicated that
Ef<sup>*</sup>and TP were key regulatory factors for phytoplankton abundance in stage
III. The results of the RDA suggested that [D<inf>eu</inf>
(λ<inf>PAR</inf>)/D<inf>mix</inf>], E<inf>t</inf>, Ef<sup>*</sup>and TP were key
regulatory factors for phytoplankton community composition in stage III. The results
indicated that TP was key regulatory factor for phytoplankton abundance in stage IV. The
results of the RDA suggested that [D<inf>eu</inf>
(λ<inf>PAR</inf>)/D<inf>mix</inf>] was key regulatory factor for phytoplankton
community composition in stage IV. © 2017, Science Press. All right reserved.
Number of references:50
Main heading:Factor analysis
Controlled terms:Multivariant analysis - Phytoplankton - Reservoirs (water) - Rivers -
Water levels
Uncontrolled terms:Chlorophyll-a concentration - Driving factors - Multivariate
statistical analysis - Phytoplankton abundances - Phytoplankton community - Redundancy
analysis (RDA) - Succession pattern - Three gorges reservoir
Classification code:441.2 Reservoirs - 471 Marine Science and Oceanography - 922
Statistical Methods - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201606137
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 132>
Accession number:20171003409561
Title:Impacts of bioremediation on microbial communities and different forms of nitrogen
in petroleum contaminated soil
Authors:Ye, Xi-Qiong (1); Wu, Man-Li (1); Chen, Kai-Li (1); Li, Wei (1); Yuan, Jing (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Corresponding author:Wu, Man-Li(wumanli@xauat.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:728-734
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A laboratory study was conducted to investigate the impacts of bioremediation on
microbial communities and various nitrogen shifts in petroleum contaminated soil by using
GC-MS and Illumia MiSeq technique. Results showed the concentrations of alkane reduced
from 25 987.8 mg·kg<sup>-1</sup>to 12 788.6 mg·kg<sup>-1</sup>, and the
concentrations of polycyclic aromatic hydrocarbons (PAHs) decreased from 5 322.9
mg·kg<sup>-1</sup>to 2 917.2 mg·kg<sup>-1</sup>. Illumia MiSeq results
showed that soil microbial communities shifted significantly after remediation, and the
relative abundance of some phylum of hydrocarbon degraders (Firmicutes, Bacterodetes),
and some genus of degraders (Dietzia, Acinetobacter) increased. Besides, the contents of
total nitrogen and ammonia nitrogen increased firstly and then decreased during
remediation. However, the contents of nitrate nitrogen decreased at the early stage, and
then kept stable in the later stage of remediation. It can be concluded that
bioremediation effectively promoted petroleum hydrocarbon degradation, and the different
fractional hydrocarbon degradation was related to the relative abundance of hydrocarbon
degraders and available nitrogen contents. © 2017, Science Press. All right
reserved.
Number of references:22
Main heading:Polycyclic aromatic hydrocarbons
Controlled terms:Aromatic hydrocarbons - Bioremediation - Biotechnology - Hydrocarbons -
Microorganisms - Nitrogen - Petroleum chemistry - Pollution - Remediation - Soil
pollution - Soils
Uncontrolled terms:GC-MS - Hydrocarbon degradation - Illumia MiSeq - Microbial
communities - Petroleum hydrocarbons - Petroleum-contaminated soil - Polycyclic aromatic
hydrocarbons (PAHS) - Soil microbial community
Classification code:454.2 Environmental Impact and Protection - 461.8 Biotechnology -
461.9 Biology - 483.1 Soils and Soil Mechanics - 513.1 Petroleum Refining, General -
804 Chemical Products Generally - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201608008
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 133>
Accession number:20171003416421
Title:Seasonal variations of soil microbial plfas and soil enzyme activity under the
citrus plantation in mt.Jinyun, Chongqing
Authors:Li, Nan-Jie (1, 2); Zeng, Qing-Ping (1, 3); He, Bing-Hui (1); Zhou, Fei (4)
Author affiliation:(1) Key Laboratory of Eco-environments in Three Gorges Reservoir
Region, College of Resources and Environment, Southwest University, Chongqing; 400715,
China; (2) Chongqing Engineering Technology Research Center for Information Management in
Development, Chongqing Technology and Business University, Chongqing; 400067, China; (3)
Sichuan Allvery Environmental Technology Co., Ltd., Chengdu; 610000, China; (4) Chongqing
Key Laboratory of Forest Ecology, Chongqing; 400036, China
Corresponding author:He, Bing-Hui(hebinghui@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:309-317
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The soil microbial community and soil enzyme activity are important parts of
soil ecosystem, and they are sensitive to the ecological environment. In this study,
citrus plantation in Mt. Jinyun was chosen as the research object. The phospholipid fatty
acid (PLFAs) combined with principal component analysis method was used to study the
effect of season changes on soil microbial quantity, community structure characteristics
and soil enzyme activity at 0-20 cm soil layer under citrus forest. The results obtained
from this study were as follows: ① The season changes had a significant impact on
soil microbes (P<0.05). Moreover, 16:0, i17:0, 16:1 2OH, 18:0, cy19:0ω8c,
i17:1ω9c or 16:0 10-methyl were found to be common in all four seasons, and the
proportion of each phospholipid fatty acid was 49.57%, 41.63%, 35.41% and 38.05%,
respectively. In various microbial species, the PLFAs content of bacteria was the
highest, followed by fungi, and that of actinomycetes was the lowest. Our results
revealed that all kinds of micro-organisms showed obvious seasonal variation
characteristics. The total PLFAs quantity of citrus forest ranged from 6.868 to 24.085
nmol·g<sup>-1</sup>, which had a content order of
spring>autumn>winter>summer. The PLFAs content of bacteria, G<sup>-</sup>,
G<sup>+</sup>and actinomycetes also showed the same variation trend. However, the PLFAs
content of fungi showed a different variation trend, i.e., autumn was the highest,
followed by winter and summer, and spring was the lowest. The results suggested that
season change also had a significant impact on microbial community functional diversity
index. The variation trend of richness index (R) followed the order of
spring>winter>autumn>summer. Moreover, the variation trend of diversity index
(H') was winter>autumn>spring>summer. Furthermore, the variation trend of
evenness index (J) was summer>autumn>winter>spring. The dominance index (D)
increased with the change of season. ② Urease showed a change with the seasons
following summer>spring>autumn>winter; Soil invertase, soil catalase and acid
phosphatase activity changed obviously in autumn, followed by spring, summer, and winter.
③ The principal component analysis demonstrated that the PLFAs content of bacteria,
G<sup>-</sup>, G<sup>+</sup>, actinomycetes and total PLFAs made the greatest
contribution to soil fertility followed by that of invertase, catalase, acid phosphatase
and fungi. Moreover, our studies showed that the PLFAs content of urease made a minimum
contribution to the soil fertility. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Soils
Controlled terms:Bacteria - Ecology - Ecosystems - Enzyme activity - Enzymes - Fatty
acids - Forestry - Fungi - Microorganisms - Phosphatases - Phospholipids - Principal
component analysis
Uncontrolled terms:Acid phosphatase activities - Citrus forest - Ecological environments
- Phospholipid fatty acids - Principal component analysis method - Season changes - Soil
enzyme activity - Soil microbial community
Classification code:454.3 Ecology and Ecosystems - 461.9 Biology - 483.1 Soils and
Soil Mechanics - 804 Chemical Products Generally - 804.1 Organic Compounds - 922.2
Mathematical Statistics
Numerical data indexing:Molality 6.87e-06mol/kg to 2.41e-05mol/kg, Percentage 3.54e+01%,
Percentage 3.80e+01%, Percentage 4.16e+01%, Percentage 4.96e+01%, Size 0.00e+00m to
2.00e-01m
DOI:10.13227/j.hjkx.201605017
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 134>
Accession number:20171003416429
Title:Cd(II) ion adsorption and sealing onto SBA-15 mesoporous particles and the related
potential on Cd(II) polluted soil remediation
Authors:Huang, Hui (1); Ning, Xi-Cui (2); Guo, Zhan-Yu (1); Guo, Di (1); Zhang, Zeng-
Qiang (1, 3); Li, Rong-Hua (1, 3); Wang, Li (1); Ali, Amjad (1)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) Environmental Monitoring Station of Yangling
Agricultural High-tech Industries Demonstration Zone, Yangling; 712100, China; (3) Key
Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of
Agriculture, Yangling; 712100, China
Corresponding author:Li, Rong-Hua(rh.lee@nwsuaf.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:374-381
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Aiming to expand the utilization of porous silicate minerals in the remediation
of heavy metal contaminated soil, the mesoporous material SBA-15 was successfully
synthesized by using sodium silicate as silica source in this study. And the obtained
SBA-15 samples were characterized by TEM, X-ray diffraction, N<inf>2</inf>adsorption-
desorption and FTIR. Furthermore, characterization of Cd(II) adsorption and sealing
performance onto SBA-15 were evaluated through batch experiment, and the remediation
potential of Cd(II) contaminated soil was investigated by brassica planting in a pot
experiment. The results showed that SBA-15 had the mesoporous structure with surface area
of 507.3 m<sup>2</sup>·g<sup>-1</sup>and pore size of 7.38 nm. The maximum Cd(II)
adsorption capacity was 76.43 mg·g<sup>-1</sup>at pH above 7.0 with the adsorption
isotherm fitting the Langmuir model in the solution of 100 mg·L<sup>-1</sup>Cd
(II). The increase in ionic strength reduced the Cd(II) adsorption capacity. The Cd(II)
loaded SBA-15 could be regenerated with 0.1 mol·L<sup>-1</sup>HNO<inf>3</inf>,
while Cd(II) could be strongly sealed in the pore structure after introduction of sodium
silicate into the system. The pot experiment proved that the addition of SBA-15 (4.5
g·kg<sup>-1</sup>) into Cd-contaminated soil could reduce Cd(II) availability,
enhance the transformation of soluble and exchangeable Cd(II) fractions into carbonate
and Fe-Mn oxides bounded forms, inhibit the Cd(II) accumulation in the plant tissue and
improve the brassica growth. Based on these results, it can be concluded that combination
of the SBA-15 particle with sodium silicate has great potential to remediate Cd(II)
contaminated soil through adsorption and sealing properties. © 2017, Science Press.
All right reserved.
Number of references:33
Main heading:Soil pollution
Controlled terms:Adsorption - Cadmium compounds - Contamination - Heavy metals - Ionic
strength - Manganese - Mesoporous materials - Pollution - Pore size - Remediation -
Silicate minerals - Silicates - Silicon compounds - Soil conservation - Soils - X ray
diffraction
Uncontrolled terms:Adsorption desorption - Cd(II) - Cd-contaminated soils - Contaminated
soils - Heavy metal contaminated soils - Mesoporous material sba-15 - Mesoporous
structures - SBA-15
Classification code:454.2 Environmental Impact and Protection - 482.2 Minerals - 483.1
Soils and Soil Mechanics - 531 Metallurgy and Metallography - 543.2 Manganese and
Alloys - 801.4 Physical Chemistry - 802.3 Chemical Operations - 951 Materials Science
Numerical data indexing:Molar_Concentration 1.00e+02mol/m3, Size 7.38e-09m,
Specific_Surface_Area 5.07e+05m2/kg
DOI:10.13227/j.hjkx.201607123
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 135>
Accession number:20171003409541
Title:Photo-induced phosphate release from organic phosphorus decomposition driven by Fe
(III)-oxalate complex in lake water
Authors:Jiang, Yong-Can (1); Peng, Yun-Xiao (1); Liu, Guang-Long (1, 2); Zhou, Yi-Yong
(2); Zhu, Duan-Wei (1)
Author affiliation:(1) College of Resources & Environment, Huazhong Agriculture
University, Wuhan; 430070, China; (2) State Key Laboratory of Freshwater Ecology and
Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan; 430072,
China
Corresponding author:Liu, Guang-Long(liugl@mail.hzau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:563-571
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The phosphate released from organic phosphorus photo-decomposition has a
significantly influence on the phosphorus levels in the water column in lakes. In order
to reveal the effect of organic phosphorus photo-decomposition on phosphate level in lake
water, the phosphate released from organic phosphorus photo-decomposition driven by Fe
(III)-oxalate complex under UV-Vis and sunlight irradiation was investigated in natural
lake water using glyphosate as the model organic phosphorus. The effects of pH and
initial concentration of Fe(III), oxalate and glyphosate on the phosphate released from
glyphosate photolysis were studied. The results showed that phosphate could be released
from glyphosate degradation by Fe(III)-oxalate complex under UV-Vis and sunlight
irradiation. The concentration of phosphate reached 0.25 mg·L<sup>-1</sup>and 0.18
mg·L<sup>-1</sup>under UV-Vis and sunlight irradiation for 60 and 720 min,
respectively. The amount of phosphate released increased with the increase of the initial
concentration of Fe(III), as well as the increasing oxalate and glyphosate concentration
in lake water. However, the increase of pH could significantly inhibit this process in
the reaction system. The concentration of phosphorus decreased with the addition of
isopropanol, which indicated that the hydroxyl radical (·OH) was one of the main
active oxygen species of Fe(III)-oxalate complex. The rates of ·OH production for
Fe(III)-oxalate/UV-Vis and Fe(III)-oxalate/sunlight systems were 0.52×10<sup>-
2</sup>μmol·(L·min)<sup>-1</sup>and 0.03×10<sup>-
2</sup>μmol·(L·min)<sup>-1</sup>, respectively. The steady-state
concentrations of hydroxyl radical (·OH) for the Fe(III)-oxalate/UV-Vis conditions
were 4.74×10<sup>-16</sup>mol·L<sup>-1</sup>and 0.27×10<sup>-
16</sup>mol·L<sup>-1</sup>for the Fe(III)-oxalate/sunlight system. © 2017,
Science Press. All right reserved.
Number of references:41
Main heading:Iron compounds
Controlled terms:Decay (organic) - Herbicides - Ionization of gases - Irradiation - Lakes
- Oxalic acid - Phosphorus - Photolysis
Uncontrolled terms:Active oxygen species - Glyphosate degradation - Glyphosates -
Hydroxyl radicals - Initial concentration - Organic phosphorus - Oxalate complexes -
Steady state concentration
Classification code:802.2 Chemical Reactions - 804 Chemical Products Generally - 804.1
Organic Compounds
Numerical data indexing:Mass_Density 1.80e-04kg/m3, Mass_Density 2.50e-04kg/m3, Time
3.60e+03s, Time 4.32e+04s
DOI:10.13227/j.hjkx.201607035
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 136>
Accession number:20171003416408
Title:Optimization and validation of the analytical method to detect common illicit drugs
in wastewater
Authors:Gao, Ting-Ting (1); Du, Peng (1); Xu, Ze-Qiong (1); Yang, Jun (2); Zhang, Hua-
Fang (2); Li, Xi-Qing (1)
Author affiliation:(1) Laboratory of Earth Surface Processes, College of Urban and
Environmental Sciences, Peking University, Beijing; 100871, China; (2) Beijing Urban
Drainage Monitoring Center Co., Ltd., Beijing; 100012, China
Corresponding author:Li, Xi-Qing(xli@urban.pku.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:201-211
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Illicit drugs have been recognized as a group of emerging pollutants. Based on
previous research, procedures to pre-treat wastewater including SPE column, pH of water
samples, and processes of washing, acidifying and re-dissolving were compared. It was
found that the best recovery was achieved when wastewater was adjusted to pH=2 and Oasis
MCX column was used. It was not necessary to flush the loaded column or to acidify the
eluate prior to evaporation using nitrogen steam. After evaporation, it is recommended to
redissolve the evaporated samples using 200 μL acetonitrile and 100 μL
acetonitrile+100 μL 5 mmol·L<sup>-1</sup>ammonium acetate in Milli-Q water for
HILIC-UPLC-MS/MS and C18-UPLC-MS/MS, respectively. After comparing retention times, limit
of detection, limit of quantification, recoveries, and matrix effects of HILIC and C18
methods, C18-UPLC-MS/MS was chosen. Influent and effluent samples from 12 wastewater
treatment plants in Beijing were analyzed using the optimized method for validation. The
validated methods set a firm foundation to apply the sewage-based epidemiology to monitor
illicit drug abuse in China. © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Effluents
Controlled terms:Acetonitrile - Effluent treatment - Evaporation - Recovery - Sewage -
Wastewater - Wastewater treatment
Uncontrolled terms:Analytical method - Emerging pollutants - Illicit drug - Limit of
detection - Limit of quantifications - UPLC-MS/MS - Validated methods - Wastewater
treatment plants
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal -
802.3 Chemical Operations - 804.1 Organic Compounds
Numerical data indexing:Molar_Concentration 5.00e+00mol/m3, Volume 1.00e-07m3, Volume
2.00e-07m3
DOI:10.13227/j.hjkx.201606170
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 137>
Accession number:20171003416417
Title:Process of enrichment and culture of PAOs on a novel biofilm process of
dephosphorization
Authors:Zheng, Ying (1, 2); Pan, Yang (1, 2, 3); Zhou, Xiao-Hua (1); Liao, Xuan-Hong (1,
2); Meng, Xuan (1, 2); Xia, Jian-Wei (4)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Environment Biotechnology Research
Institute, Suzhou University of Science and Technology, Suzhou; 215009, China; (3)
Jiangsu Key Laboratory of Environment Science and Engineering, Suzhou; 215009, China; (4)
The Environment Emergency and Accident Investigation Center of Suzhou, Suzhou; 215002,
China
Corresponding author:Pan, Yang(panyang@mail.usts.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:276-282
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Using the hanging nylon as a biological carrier, a novel biofilm reactor was
adopted to treat synthetic wastewater, and the feasibility of cultivating and enriching a
high concentration of PAOs on this conventional biofilm within a short time was
investigated, which was proved from the aspects of reactor's operational efficiency, the
rate of phosphorus removal and the condition of PAOs enrichment. After 10d of operation,
the rate of orthophosphate removal was higher than 95% in aerobic phase and the
concentration of effluent COD was 50 mg·L<sup>-1</sup>or less in the reactor,which
was operated steadily for 50 d at this treatment level; after 48 d of operation, the
reactor's phosphorus uptake rate and release rate were increased from 3.4 mg·
(L·h)<sup>-1</sup>and 3.4 mg·(L·h)<sup>-1</sup>to 8 mg·
(L·h)<sup>-1</sup>and 6 mg·(L·h)<sup>-1</sup>,respectively, and the
aerobic and anaerobic cycles were shortened from equally 6 h to 2 h and 3 h,
respectively. The fluorescence in situ hybridization (FISH) test found that the PAOs'
abundance was increased from the original 48.96% to 70% on the 50th day, meanwhile the
PAOs showed reunite chunk state in hybrid figure, the thickness of biofilm measured by
direct microscopic process was about 28.9 μm, which all proved that the PAOs in
biofilm were at the end of the growth kinetics and the biofilm was mature. By hardening
culture for 50d, a high concentration of 70% in full organisms of PAOs could be enriched
in the conventional nylon filler, enabling the reactor to show a high efficiency in
removal of phosphorus and organic matter from sewage. © 2017, Science Press. All
right reserved.
Number of references:25
Main heading:Chemicals removal (water treatment)
Controlled terms:Biofilms - Biological water treatment - Blast enrichment - Carrier
concentration - Efficiency - Effluent treatment - Effluents - Fillers - Fish -
Fluorescence microscopy - Growth kinetics - Phosphorus - Polyamides - Rayon - Sewage -
Wastewater treatment
Uncontrolled terms:Biological carriers - Fluorescence in situ hybridization - Microscopic
process - Operational efficiencies - Orthophosphate removals - PAOs - Phosphorus removal
- Synthetic waste water
Classification code:445.1 Water Treatment Techniques - 452 Municipal and Industrial
Wastes; Waste Treatment and Disposal - 462.5 Biomaterials (including synthetics) - 701.1
Electricity: Basic Concepts and Phenomena - 804 Chemical Products Generally - 815.1.1
Organic Polymers - 819.2 Synthetic Fibers - 913.1 Production Engineering - 931.4
Quantum Theory; Quantum Mechanics
Numerical data indexing:Mass_Density 5.00e-02kg/m3, Percentage 4.90e+01% to 7.00e+01%,
Percentage 7.00e+01%, Percentage 9.50e+01%, Size 2.89e-05m, Time 1.08e+04s, Time 2.16e
+04s to 7.20e+03s
DOI:10.13227/j.hjkx.201607082
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 138>
Accession number:20171003416389
Title:Greenhouse gas fluxes at water-air interface in small pond using flux-gradient
method based on spectrum analyzer
Authors:Zhao, Jia-Yu (1, 2); Zhang, Mi (2); Xiao, Wei (2); Wang, Wei (2); Wu, Hong-Yan
(1); Zhang, Zhen (2); Xiao, Qi-Tao (2); Hu, Cheng (2); Yu, Zhou (2); Cao, Zheng-Da (2);
Xu, Jing-Zheng (2); Liu, Shou-Dong (2); Li, Xu-Hui (2)
Author affiliation:(1) School of Physics and Optoelectronic Engineering, Nanjing
University of Information Science and Technology, Nanjing; 210044, China; (2) Joint
International Research Laboratory of Climate and Environment Change, Collaborative
Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing
University of Information Science and Technology, Nanjing; 210044, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:41-51
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:As an important part of inland waters, small pond is a neglected source of
greenhouse gas. The main objective of the study was to quantify greenhouse gas fluxes
(CO<inf>2</inf>and CH<inf>4</inf>) from small pond in the Yangtze Delta using flux-
gradient method. The results showed that: ① zero-gradient test indicated that the
flux measurement precision for water vapor, CO<inf>2</inf>, and CH<inf>4</inf>was 7.525
W·m<sup>-2</sup>, 0.022 mg·(m<sup>2</sup>·s)<sup>-1</sup>, and 0.054
μg·(m<sup>2</sup>·s)<sup>-1</sup>, respectively. During the test period,
84%, 80%, and 94% of half-hourly flux data for H<inf>2</inf>O, CO<inf>2</inf>, and
CH<inf>4</inf>were higher than the zero-gradient measurement precision. ②Based on
the measurement, the small pond was the source of CO<inf>2</inf>and CH<inf>4</inf>for the
atmosphere in summer, the mean emission flux of CO<inf>2</inf>and CH<inf>4</inf>was 0.038
mg·(m<sup>2</sup>·s)<sup>-1</sup>and 0.889 μg·
(m<sup>2</sup>·s)<sup>-1</sup>, respectively. The CH<inf>4</inf>emission fluxes
from the small pond were more higher than the median value of emission for global lakes.
The results indicated that greenhouse gas emission from small pond was an important part
for estimating inland water greenhouse gas emissions, especially for
CH<inf>4</inf>emission. These results can provide scientific reference for making
emission inventory of regional greenhouse gas. © 2017, Science Press. All right
reserved.
Number of references:31
Main heading:Phase interfaces
Controlled terms:Carbon dioxide - Gas emissions - Gases - Gradient methods - Greenhouse
gases - Lakes - Spectrum analyzers
Uncontrolled terms:Eddy covariance method - Emission fluxes - Emission inventories - Flux
measurements - Flux-gradient methods - Greenhouse gas fluxes - Scientific references -
Water-air interface
Classification code:451.1 Air Pollution Sources - 801.4 Physical Chemistry - 804.2
Inorganic Compounds - 921.6 Numerical Methods
Numerical data indexing:Percentage 8.00e+01%, Percentage 8.40e+01%, Percentage 9.40e+01%,
Surface_Power_Density 7.53e+00W/m2
DOI:10.13227/j.hjkx.201605142
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 139>
Accession number:20171003416427
Title:Fractions transformation of heavy metals in compound contaminated soil treated with
biochar, montmorillonite and mixed addition
Authors:Gao, Rui-Li (1); Tang, Mao (1); Fu, Qing-Ling (1); Guo, Guang-Guang (1); Li, Xiao
(1); Hu, Hong-Qing (1)
Author affiliation:(1) College of Resources and Environment, Huazhong Agricultural
University, Wuhan; 430070, China
Corresponding author:Hu, Hong-Qing(hqhu@mail.hzau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:361-367
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A compound contaminated soil sampled from Lingxiang City, Hunan Province, was
used to investigate the effects of biochar (BC) and montmorillonite (MM) addition on
heavy metals fractions. The addition amounts of BC and MM were 1%, 2%, 5%, respectively,
and the mixture treatment was 1% BC+1% MM. BCR(European Community Bureau of Reference)
sequential extraction method was used to assess the fractions of heavy metals in soil
after incubation. The results indicated that adding BC alone significantly reduced the
available contents of Pb, Cu and Cd. Among montmorillonite treatments, MM5% treatment
decreased the weak acid extractable content of Cu, Pb, Zn, Cd by 27.6%, 19.2%, 25.6%,
19.2%, respectively. BC+MM treatment worked well, decreased the weak acid extractable
content of Cu,Pb, Zn, Cd by 15.8%, 15.9%, 13.1%, 12.0%, and increased the residual
content by 39.0%, 110.1%, 9.6%, 62.5%, significantly reducing the mobility of the four
elements. For the stabilization effect, MM treatment worked better than BC treatment, and
a combination of two amendments worked the best. © 2017, Science Press. All right
reserved.
Number of references:27
Main heading:Soil pollution
Controlled terms:Aluminum corrosion - Biochemistry - Clay minerals - Extraction - Heavy
metals - Lead - Soils - Stabilization - Zinc
Uncontrolled terms:Bioavailability - Contaminated soils - Continuous extraction -
European community bureau of references - Heavy metals in soil - Mixture treatments -
Sequential extraction method - Stabilization effects
Classification code:482.2 Minerals - 483.1 Soils and Soil Mechanics - 531 Metallurgy
and Metallography - 539.1 Metals Corrosion - 546.1 Lead and Alloys - 546.3 Zinc and
Alloys - 801.2 Biochemistry - 802.3 Chemical Operations
Numerical data indexing:Percentage 1.00e+00%, Percentage 1.10e+02%, Percentage 1.20e+01%,
Percentage 1.31e+01%, Percentage 1.58e+01%, Percentage 1.59e+01%, Percentage 1.92e+01%,
Percentage 2.00e+00%, Percentage 2.56e+01%, Percentage 2.76e+01%, Percentage 3.90e+01%,
Percentage 5.00e+00%, Percentage 6.25e+01%, Percentage 9.60e+00%
DOI:10.13227/j.hjkx.201606018
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 140>
Accession number:20171003409556
Title:Highly efficient bioflocculation of microalgae using Mucor circinelloides
Authors:Gu, Qiong (1); Jin, Wen-Biao (1); Chen, Yuan-Qing (1); Guo, Shi-Da (1); Wan,
Chao-Fan (1)
Author affiliation:(1) School of Civil and Environmental Engineering, Harbin Institute of
Technology Shenzhen Graduate School, Shenzhen; 518055, China
Corresponding author:Jin, Wen-Biao(13828830095@139.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:688-696
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Harvesting of microalgae is the major challenge in cost-efficient large-scale
microalgal biomass production due to their low concentration and small cell size in the
culture medium. The present paper aimed to study the efficiency of the filamentous fungus
Mucor circinelloides spores suspensions to harvest the green unicellular microalga
Chlorella pyrenoidosa grown in synthetic medium. Results showed that the optimal co-
culture conditions were pH=6.0, 1.25 g·L<sup>-1</sup>glucose and 1∶250 fungi
to microalgae ratio with harvest efficiency of 91.08%. In addition, the mentioned optimal
conditions could be applied for actual sewage with harvest efficiency of 92.33%.
Polysaccharide concentrations measured before and after 48 h of cultivation showed that
the polysaccharide of C. pyrenoidosa cultured alone was increased by 0.047
g·L<sup>-1</sup>, while co-cultured mixture showed increase in polysaccharides by
0.019 g·L<sup>-1</sup>. The recorded decrease in polysaccharides concentration in
the co-culture might be attributed to using of excreted polysaccharides by M.
circinelloides to grow, confirming the symbiotic association of both organisms.
Furthermore, with decreasing the pH, C. pyrenoidosa Zeta potential was stable, while it
was increased from -37.7 mV to -9.87 mV in M. circinelloides, which indicated that charge
neutralization was the mechanism of flocculation between algae and fungi. © 2017,
Science Press. All right reserved.
Number of references:16
Main heading:Algae
Controlled terms:Efficiency - Fungi - Harvesting - Mechanisms - Microorganisms -
Polysaccharides - Sewage
Uncontrolled terms:Charge neutralization - Chlorella pyrenoidosa - Filamentous fungi -
Mechanism of flocculation - Micro-algae - Mucor circinelloides - Symbiotic association -
Unicellular microalga
Classification code:452.1 Sewage - 461.9 Biology - 601.3 Mechanisms - 804.1 Organic
Compounds - 821.3 Agricultural Methods - 913.1 Production Engineering
Numerical data indexing:Mass_Density 1.25e+00kg/m3, Mass_Density 1.90e-02kg/m3,
Mass_Density 4.70e-02kg/m3, Percentage 9.11e+01%, Percentage 9.23e+01%, Time 1.73e+05s,
Voltage -9.87e-03V
DOI:10.13227/j.hjkx.201607217
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 141>
Accession number:20171003409566
Title:Effects of biochar pyrolyzed at varying temperatures on soil organic carbon and its
components: influence on the composition and properties of humic substances
Authors:Zhao, Shi-Xiang (1); Yu, Xiao-Ling (1); Li, Zhong-Hui (1); Yang, Yan (1); Zhang,
Xia (1); Wang, Xu-Dong (1, 2); Zhang, A-Feng (1)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) Key Laboratory Plant Nutrition and the Agri-
environment in Northwest China, Ministry of Agriculture, Yangling; 712100, China
Corresponding author:Wang, Xu-Dong(wangxudong01@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:769-782
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Application of biochar (BC) is an important way to increase soil organic carbon
sequestration. At the same time, the effect of BC on fractions and properties of soil
humic substances is concerned. A laboratory experiment was conducted to study the
influences of BC pyrolyzed at different temperatures on the composition and properties of
humic substances. The modified method for the extraction and fractionation of humic
substances was adopted in this work. The carbon (C) contents of Humin (Hu), Humic acids
(HA), Fulvic acids (FA) were analyzed by the thermal oxidation of
K<inf>2</inf>Cr<inf>2</inf>O<inf>7</inf>and TOC analyzer, and the optical properties of
HA and FA were measured by using spectrophotometer. The results showed that the
increasing temperature (from 300 to 600℃) decreased like-humic substances (LHS)
from 10.93 g·kg<sup>-1</sup>to 0.26 g·kg<sup>-1</sup>, while the structure
of theLHS tended to be complicated. Compared with control treatment (CK), the addition of
BC produced under 400℃ increased the contents of HA and FA (after 240 d incubation
a lower FA content was found in treatments) and increased as BC application rate
increased, after 360 d of incubation, BC300 and BC400 significantly increased by 69.93%
and 48.75% for HA (P<0.05), while decreased by 1.35% and 5.19% for FA. Higher contents
of HA and FA were found in soil samples amended with BC prepared at above 400℃ only
during the initial period of 3-10 d of incubation and increased as BC application rate
increased, at the end of the incubation, the contents of HA and FA significantly
decreased by 34.38%, 44.48% in BC500 treatments and 42.84%, 49.27% in the BC600
treatments (P<0.05). During the incubation, the addition of BC significantly increased
the contents of Hu (P<0.05), and the treatments amended with BC500 were the highest.
The addition of BC decreased the relative contents of HA and FA, while increased the
relative content of Hu, indicating that the proportion of relatively stable organic
carbon in the soil was increased. The ratio of HA/FA (H/F) varied between 0.88 and 2.52
and increased with decreasing pyrolysis temperature and increasing BC application. A
significantly lower color tonal coefficient (ΔlgK) and
E<inf>4</inf>/E<inf>6</inf>values in treatments amended with BC produced at temperatures
above 400℃, indicating that higher temperatures derived BC complicated the
structure of soil humic substance, while an opposite rend was observed in treatments
amended with BC produced at temperatures under 400℃. Considering the improvement of
the stability of organic carbon, when the BC products were applied to the Loutu soil,
500℃ was the optimal temperature for preparing apple-derived BC not only because it
could significantly increase the content of inert soil organic carbon, but also improve
the quality of the soil as a result of enhancing the degree of soil humification. ©
2017, Science Press. All right reserved.
Number of references:42
Main heading:Organic carbon
Controlled terms:Biological materials - Optical properties - Organic acids -
Photodegradation - Pyrolysis - Soils - Thermooxidation
Uncontrolled terms:Bio chars - Fulvic acids - Humic acid - Humic substances - Humin
Classification code:461.2 Biological Materials and Tissue Engineering - 483.1 Soils and
Soil Mechanics - 741.1 Light/Optics - 802.2 Chemical Reactions - 804.1 Organic
Compounds
Numerical data indexing:Percentage 1.35e+00%, Percentage 3.44e+01%, Percentage 4.28e+01%,
Percentage 4.45e+01%, Percentage 4.88e+01%, Percentage 4.93e+01%, Percentage 5.19e+00%,
Percentage 6.99e+01%
DOI:10.13227/j.hjkx.201604059
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 142>
Accession number:20171003416413
Title:Characteristics of perchlorate reduction and analysis of consortium structure in a
sulfur-based reactor at a high perchlorate concentration
Authors:Zhang, Chao (1); Tao, Hua-Qiang (2); Song, Yuan-Yuan (2); Lu, Cai-Cai (2); Guo,
Yan-Kai (1); Lian, Jing (1); Guo, Jian-Bo (2)
Author affiliation:(1) Pollution Prevention Biotechnology Laboratory of Hebei Province,
School of Environment Science and Engineering, Hebei University of Science and
Technology, Shijiazhuang; 050018, China; (2) Tianjin Key Laboratory of Aquatic Science
and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian
University, Tianjin; 300384, China
Corresponding author:Guo, Jian-Bo(jianbguo@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:247-252
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The effects of perchlorate concentration and hydraulic retention time (HRT) on
perchlorate reduction characteristics were investigated in a sulfur-based perchlorate
reduction reactor. The results showed that the perchlorate was completely removed at HRT
of 12 h and the influent perchlorate concentration ranged from 50 mg·L<sup>-
1</sup>to 194 mg·L<sup>-1</sup>; The perchlorate removal efficiency was 74% at HRT
of 4 h and the influent perchlorate concentration was 194 mg·L<sup>-1</sup>; The
yield of sulfate was increased by increasing the influent perchlorate concentration and
HRT; The influent pH and alkalinity was approximately 8.0 and 500 mg·L<sup>-
1</sup>CaCO<inf>3</inf>, and the effluent pH and alkalinity was approximately 6.7 and 100
mg·L<sup>-1</sup>CaCO<inf>3</inf>, respectively; The oxidation reduction potential
(ORP) ranged from -380 mV to -330 mV at the bottom of the reactor, however, ORP ranged
from -300 mV to -250 mV at the top of the reactor; The molecular biological analysis
showed that the microbial consortium structure was different along the flow path in the
reactor, Sulfurovum which is known to oxidize sulfur was decreased from 57.78% to 32.19%
and Hydrogenophilaceae which is known to oxidize hydrogen sulfide was increased from
4.35% to 22.24%. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Inorganic compounds
Controlled terms:Alkalinity - Calcium carbonate - Desulfurization - Hydrodesulfurization
- Oxidation - pH - pH effects - Redox reactions - Sulfur
Uncontrolled terms:Biological analysis - Hydraulic retention time - Microbial consortia -
Oxidation reduction potential - Perchlorate - Perchlorate concentration - Perchlorate
removal - Structure analysis
Classification code:801.1 Chemistry, General - 802.2 Chemical Reactions - 802.3
Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 1.00e-01kg/m3, Mass_Density 5.00e-01kg/m3,
Mass_Density 6.70e-03kg/m3, Mass_Density 8.00e-03kg/m3, Percentage 4.35e+00% to 2.22e
+01%, Percentage 5.78e+01% to 3.22e+01%, Percentage 7.40e+01%, Time 1.44e+04s, Time
4.32e+04s, Voltage -2.50e-01V, Voltage -3.30e-01V
DOI:10.13227/j.hjkx.201607010
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 143>
Accession number:20171003409563
Title:Effect of reclaimed water on bacterial community composition and function in urban
river sediment
Authors:Di, Yan-Ming (1, 2); Wang, Guang-Xuan (1, 2); Huang, Xing-Ru (1, 2); Guo, Xiao-Yu
(1, 2)
Author affiliation:(1) College of Resources Environment and Tourism, Capital Normal
University, Beijing; 100048, China; (2) Urban Environmental Processes and Digital
Modeling Laboratory, Beijing; 100048, China
Corresponding author:Guo, Xiao-Yu(xiaoyucnu@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:743-751
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to study the effect of reclaimed water on bacterial community
composition and function in urban river sediment, the changes of bacteria community
diversity, composition and function in Mayu wetland upon the supply of reclaimed water
were investigated by a range of sophisticated procedures, including Terminal Restriction
Fragment Length Polymorphism(T-RFLP), 16S rRNA clone library technology, and Real-time
Quantitative PCR Detecting System(qPCR).The results showed that carbon, nitrogen and
phosphorus were major factors driving the variation of bacterial diversity and community
structure in river sediment, and the bacteria were gradually recovered after purification
in downstream under the effect of artificial wetland. In addition, the bacterial
community in reclaimed water outfall was mainly constituted by β-Proteobacteria,
δ-Proteobacteria, Bacteroidales and Cyanobacteriain, and Ε-Proteobacteria,
Chloroflexi and Spirochaetes were unique groups. Besides, the major biological
geochemical cycle was nitrogen, carbon and phosphorus cycle in river sediment, which was
closely related to functional genes. There were about 45.9% of the clones related to
nitrogen cycle in reclaimed water outfall, such as Comamonas sp., higher than those of
upstream and downstream (27.7% and 23.4%), 17.9% of the clones were closely related to
the carbon cycle, such as Lysobacter sp., higher than those of upstream and downstream
(14.4% and 12.9%). Furthermore, the trace of pathogenic bacteria and antibiotics in
reclaimed water also changed the transformation pattern participating in carbon and
nitrogen cycle, for example, Rhodocyclus sp. conducted nitrogen fixation by
photosynthesis in reclaimed water outfall, whereas Burkholderia sp. fixes nitrogen by
ways of plants symbiotic nitrogen fixation in upstream and downstream. This research
provides theoretical reference for studies on remediation of reclaimed water supplying
river by artificial wetland. © 2017, Science Press. All right reserved.
Number of references:42
Main heading:Rivers
Controlled terms:Bacteria - Cloning - Forestry - Genes - Nitrogen - Nitrogen fixation -
Outfalls - Phosphorus - Polymerase chain reaction - Reclamation - RNA - Sediments -
Water resources - Wetlands
Uncontrolled terms:16S rRNA - Bacterial community - Functional genes - Re-claimed water -
T-RFLP - Urban river
Classification code:444 Water Resources - 452.1 Sewage - 461.2 Biological Materials
and Tissue Engineering - 461.8.1 Genetic Engineering - 483 Soil Mechanics and
Foundations - 801.2 Biochemistry - 802.2 Chemical Reactions - 804 Chemical Products
Generally
Numerical data indexing:Percentage 1.29e+01%, Percentage 1.44e+01%, Percentage 1.79e+01%,
Percentage 2.34e+01%, Percentage 2.77e+01%, Percentage 4.59e+01%
DOI:10.13227/j.hjkx.201606089
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 144>
Accession number:20171003416394
Title:Seasonal variation of colloid particles in the shallow well water of a small
watershed of purple soil
Authors:Zhang, Wei (1, 2); Tang, Xiang-Yu (2); Xian, Qing-Song (2, 3)
Author affiliation:(1) School of Tourism and Land Resource, Chongqing Technology and
Business University, Chongqing; 400067, China; (2) Key Laboratory of Mountain Surface
Processes and Ecological Regulation, Institute of Mountain Hazards and Environment,
Chinese Academy of Sciences, Chengdu; 610041, China; (3) University of Chinese Academy of
Sciences, Beijing; 100049, China
Corresponding author:Tang, Xiang-Yu(xytang@imde.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:87-94
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Colloids are the major carriers of various contaminants during the downward
transport into groundwater. To explore the long-term dynamics of colloid in the
groundwater and its influencing factors, a one-year monitoring of colloid concentration
and water physicochemical parameters was carried out in the shallow wells in a purple
soil dominated watershed in the hilly region of central Sichuan. The results indicated
that colloid concentrations within a year had a strong seasonal variation with the
coefficient of variation being larger than 0.5. The maximum of colloid mass concentration
could reach as high as 14.68 mg·L<sup>-1</sup>(the corresponding number
concentration being 1.34×10<sup>9</sup>L<sup>-1</sup>), which occurred in the non-
rainy season and was caused by the physical perturbations from water taken. Physical
perturbations of rainfall led to the distinct peaks of colloid concentrations in the well
water at the early stages of rainy season while it did not occur at the end of the rainy
season even upon heavy storm. Water chemistries (EC, Ca<sup>2+</sup>, Mg<sup>2+</sup>,
DOC) showed the dominant role in determining colloid concentrations and status in the
well. The facilitated transport of contaminants (i.e. pesticides and heavy metals) due to
the increased colloids in the shallow well water at the early stages of rainy season
would potentially pose a great threat to the drinking water safety in the study area.
Therefore, it is strongly suggested to increase the monitoring frequencies in terms of
colloid concentrations and well water physicochemical parameters following the large
rainfall events during this period. © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Colloids
Controlled terms:Groundwater - Groundwater pollution - Heavy metals - Particle size -
Particle size analysis - Potable water - Rain - Soils - Surface waters - Water -
Watersheds
Uncontrolled terms:Coefficient of variation - Colloid concentration - Facilitated
transport - Mass concentration - Number concentration - Physicochemical parameters -
Purple soils - Seasonal dynamics
Classification code:443.3 Precipitation - 444 Water Resources - 483.1 Soils and Soil
Mechanics - 531 Metallurgy and Metallography - 801.3 Colloid Chemistry - 951 Materials
Science
Numerical data indexing:Mass_Density 1.47e-02kg/m3
DOI:10.13227/j.hjkx.201607070
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 145>
Accession number:20171003416410
Title:Effect of PVDF hollow fiber ultrafiltration membranes modification with
carbonnanotube on membrane fouling control during ultrafiltration of sewage effluent
Authors:Wang, Li-Ying (1); Shi, Jie (1); Wang, Kai-Lun (1); Guan, Yu-Qi (1); Guo, Jin (1)
Author affiliation:(1) School of Environmental and Energy Engineering, Beijing University
of Technology, Beijing; 100124, China
Corresponding author:Guo, Jin(guojin@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:220-228
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The modification of hollow fiber ultrafiltration membranes with carbon nanotube
(CNTs) on fouling control was investigated. Considering the antifouling ability of the
CNT-modified membranes and the stability of CNTs layer, several factors were analyzed and
evaluated, including the concentration of ethanol-dispersion, the diameter of CNTs, and
the loading mass of CNTs. Besides, DOC, UV<inf>254</inf>, and fluorescence
characteristics of the permeate from the CNT-modified membrane were analyzed. The results
revealed that the optimal modification method included a 50%(volume fraction) ethanol-
dispersion,a 30-50 nm diameter-CNTs, and 3 g·m<sup>-2</sup>CNTs' loading. Compared
with the virgin membrane, the removal rates of DOC and UV<inf>254</inf>by the CNT-
modified membrane were increased by 37% and 56%, respectively. Meanwhile, it was proved
that the humic-like and protein-like materials were more easily removed by the CNT-
modified membrane. © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Carbon nanotubes
Controlled terms:Ethanol - Membrane fouling - Membranes - Nanotubes - Sewage -
Ultrafiltration - Yarn
Uncontrolled terms:Anti-fouling ability - Fluorescence characteristics - Fouling control
- Membrane modification - Modification methods - Modified membranes - Sewage effluents -
Ultra-filtration membranes
Classification code:452.1 Sewage - 761 Nanotechnology - 802.3 Chemical Operations -
804.1 Organic Compounds - 819.4 Fiber Products - 951 Materials Science
Numerical data indexing:Percentage 3.70e+01%, Percentage 5.60e+01%, Size 3.00e-08m to
5.00e-08m
DOI:10.13227/j.hjkx.201603008
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 146>
Accession number:20171003409539
Title:Response of the water quality of a stratified reservoir to an extreme El
Niño event during summer
Authors:Qiu, Xiao-Peng (1); Huang, Ting-Lin (1); Zeng, Ming-Zheng (1); Shi, Jian-Chao
(1); Cao, Zhan-Hui (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Corresponding author:Huang, Ting-Lin(huangtinglin@xauat.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:547-554
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Global warming can intensify the El Niño phenomenon that recurs every 2-7
years, which will lead to a great interannual variability of climate and may induce the
deterioration of the water quality of reservoirs. To study the influence of the extreme
El Niño events on the water quality of stratified reservoirs during summer, field
surveys were conducted in Zhoucun Reservoir and its inflow rivers from May to August in a
normal year (2012) and a strong El Niño year (2015). Temporal variations of
physical and chemical index were investigated during monitoring. The results showed that
the Zhoucun Reservoir was stratified during the study period. The precipitation in the
summer of the normal year was significantly higher than that in the El Niño year
at the same period. In the summer of the normal year, the water level increased from
124.26 m to 127.14 m and the hypolimnion thickness increased by 3.1 m. However, in 2015,
the rapid decrease of the water level from May to August (from 121.65 m to 119.46 m) led
to the decrease of the hypolimnion thickness (by 3.2 m). The inflow rivers belonged to
surface current and its nutrients concentrations were obviously higher than those in the
epilimnion. The inflow nutrients loads increased significantly in the summer of the
normal year, as a result, total nitrogen increased from 1.00 mg·L<sup>-1</sup>to
2.06 mg·L<sup>-1</sup>, nitrate increased from 0.19 mg·L<sup>-1</sup>to
1.28 mg·L<sup>-1</sup>, and total phosphorus increased from 0.023
mg·L<sup>-1</sup>to 0.088 mg·L<sup>-1</sup>in the lacustrine zone of the
reservoir. In contrast, the nutrients concentrations changed little in the summer of the
El Niño year due to the decrease in runoff. Nonetheless, the reducing pollutants
concentrations of the hypolimnion in the El Niño year were significantly higher
than those in the normal year, which may be due to the temporal variations of hypolimnion
thicknesses. The maximum concentrations of iron, manganese, ammonium and sulfide in the
summer of the El Niño year were 0.38, 1.36, 2.36 and 1.67 mg·L<sup>-
1</sup>, respectively. All these index exceeded the standards for surface water Class
III. We conclude that the extreme El Niño event has an apparent influence on the
nutrients concentrations in the epilimnion and the pollutants concentrations in the
hypolimnion in Zhoucun Reservoir. © 2017, Science Press. All right reserved.
Number of references:34
Main heading:River pollution
Controlled terms:Global warming - Nickel - Nutrients - Pollution - Reservoirs (water) -
Surface waters - Temperature distribution - Thermal stratification - Water levels - Water
quality
Uncontrolled terms:Chemical indices - Hypolimnion - Interannual variability - Maximum
concentrations - Nutrients concentrations - Stratified reservoirs - Temporal variation -
Total phosphorus
Classification code:441.2 Reservoirs - 443.1 Atmospheric Properties - 444.1 Surface
Water - 445.2 Water Analysis - 453 Water Pollution - 548.1 Nickel - 641.1
Thermodynamics
Numerical data indexing:Age 2.00e+00yr to 7.00e+00yr, Mass_Density 1.00e-03kg/m3 to
2.06e-03kg/m3, Mass_Density 1.67e-03kg/m3, Mass_Density 1.90e-04kg/m3 to 1.28e-03kg/m3,
Mass_Density 2.30e-05kg/m3 to 8.80e-05kg/m3, Mass_Density 2.36e-03kg/m3, Size 1.22e+02m
to 1.19e+02m, Size 1.24e+02m to 1.27e+02m, Size 3.10e+00m, Size 3.20e+00m
DOI:10.13227/j.hjkx.201608001
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 147>
Accession number:20171003416395
Title:Deposition characteristics of suspended solids and the response of dissolved
nutrients in spring in the western lakeside of Taihu Lake
Authors:Qi, Chuang (1); Wang, Guo-Xiang (2, 3); Wu, Xin-Ting (2); Xu, Xiao-Guang (2, 3);
Han, Rui-Ming (2, 3); Wu, Song-Jun (2)
Author affiliation:(1) School of Geography Science, Nanjing Normal University, Nanjing;
210097, China; (2) School of Environment, Nanjing Normal University, Nanjing; 210097,
China; (3) Jiangsu Center for Collaborative Innovation in Geographical Information
Resource Development and Application, Jiangsu Key Laboratory of Environmental Change and
Ecological Construction, Institute of Water Environmental Eco-remediation, Nanjing;
210023, China
Corresponding author:Wang, Guo-Xiang(wangguoxiang@njnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:95-103
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To reveal the spatiotemporal characteristics of nutrients in the deposition
process of suspended solids in lakeside zone, in situ deposition tests were performed in
the western lakeside of Taihu Lake, and the contents of TP, TN, NH<inf>4</inf><sup>
+</sup>-N and NO<inf>3</inf><sup>-</sup>-N were measured and analyzed. The results showed
that the deposition fluxes in the western lakeside of Taihu Lake ranked as follows:
artificial reed areas>non-vegetation nearshore areas>natural reed areas>non-
vegetation offshore areas, with their average values of (1 383.40±925.60), (1
208.67±743.50), (278.72±142.53), (245.58±154.25) g·
(m<sup>2</sup>·d)<sup>-1</sup>, respectively. From the 6th day, the deposition
volume steadily increased, with the deposition rate larger than the decomposition rate.
Through the 15-day continuous in situ observation, the content of TP in nearshore zone
was 2-3 folds larger than that of offshore zone, and the content of NH<inf>4</inf><sup>
+</sup>-N was significantly different from that of NO<inf>3</inf><sup>-</sup>-N in the
settlement bottle (P<0.01). The deposition volume was significantly and positively
correlated to both TN and NH<inf>4</inf><sup>+</sup>-N contents in the water column
(P<0.01, n=42), suggesting that the TN and NH<inf>4</inf><sup>+</sup>-N contents in
the overlying water increased with the deposition fluxes. The correlation coefficient
between TN and NH<inf>4</inf><sup>+</sup>-N was 0.84, implicating that the increase of
deposition flux may accelerate the mutual transformation between different forms of
nitrogen. These findings should be taken into account in the current control of black
blooms and nutrient management in Taihu Lake. © 2017, Science Press. All right
reserved.
Number of references:49
Main heading:Deposition
Controlled terms:Bottles - Deposition rates - Lakes - Nutrients - Vegetation
Uncontrolled terms:Correlation coefficient - Deposition characteristics - Deposition
fluxes - In-situ observations - Lakeside - Mutual transformations - Spatiotemporal
characteristics - Taihu lakes
Classification code:694.2 Packaging Materials - 802.3 Chemical Operations
Numerical data indexing:Age 4.11e-02yr
DOI:10.13227/j.hjkx.201607102
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 148>
Accession number:20171003409568
Title:Comparative analysis on effect of wheat straw and its biochar amendment on net
global warming potential under wheat-maize rotation ecosystem in the Guanzhong Plain
Authors:Cheng, Gong (1, 3); Chen, Jing (1, 3); Liu, Jing-Jing (2); Zhang, A-Feng (1, 3);
Wang, Xu-Dong (1, 3); Feng, Hao (2); Zhao, Ying (1)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) College of Water Resources and Architectural
Engineering, Northwest A&F University, Yangling; 712100, China; (3) Key Laboratory of
Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture,
Yangling; 712100, China
Corresponding author:Zhang, A-Feng(zhangafeng@nwsuaf.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:792-801
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to compare the differences in carbon sequestration and greenhouse gas
mitigation between straw and straw-derived biochar amendment, a field experiment was
conducted with simultaneous measurement of carbon dioxide (CO<inf>2</inf>), methane
(CH<inf>4</inf>) and nitrous oxide (N<inf>2</inf>O) emissions, crop yield, soil organic
carbon (SOC) content and net global warming potential (NGWP) in a wheat-maize rotation
cropping system from the loess plateau of China. Five treatments were included: control
(no straw incorporation, no straw-derived biochar amendment and no fertilization, CK),
fertilization (no straw incorporation and no straw-derived biochar amendment, F), straw
with fertilization (wheat straw incorporated at 8 t·hm<sup>-2</sup>, FS), low
straw-derived biochar (8 t·hm<sup>-2</sup>) with fertilization (FBlow) and high
straw-derived biochar (16 t·hm<sup>-2</sup>) with fertilization (FBhigh). Wheat
yield increased by 30.9%, 66.3% and 36.6% under FS, FBlow and FBhigh treatment, as
compared to the F treatment, respectively. However, maize yield decreased by 14.1%, 18.0%
and 24.6% under FS, CK and FBhigh treatment as compared to the F treatment, respectively.
There was no significant difference between FBlow and F treatment. Annual
CO<inf>2</inf>emission increased by 60.2% under FS treatment, but decreased by 14.4%
under FBhigh treatment as compared to the F treatment, respectively. Annual
N<inf>2</inf>O emission decreased by 27.6% and 38.7% under FBlow and FBhigh treatment as
compared to the F treatment, respectively. However, no significant difference was
observed under straw application. Overall, the NGWP decreased by 24.13 and 58.44
t·hm<sup>-2</sup>under FBlow and FBhigh treatment as compared to the F treatment,
respectively. And the NGHGI decreased by 1.78 and 5.06 t·t<sup>-1</sup>under FBlow
and FBhigh treatment as compared to the F treatment, respectively. In summary, we
conclude that the fertilization with 16 t·hm<sup>-2</sup>biochar amendment can be
used as an effective management to improve the crop yield and reduce the net global
warming potential under the wheat-maize rotation system. © 2017, Science Press. All
right reserved.
Number of references:44
Main heading:Organic carbon
Controlled terms:Agriculture - Carbon dioxide - Crops - Gas emissions - Global warming -
Greenhouse gases - Nitrogen oxides - Rotation - Soil surveys - Straw
Uncontrolled terms:Bio chars - Global warming potential - Soil organic carbon - Wheat
straws - Wheat-maize rotation system
Classification code:443.1 Atmospheric Properties - 451.1 Air Pollution Sources - 483.1
Soils and Soil Mechanics - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 821
Agricultural Equipment and Methods; Vegetation and Pest Control - 931.1 Mechanics
Numerical data indexing:Percentage 1.41e+01%, Percentage 1.44e+01%, Percentage 1.80e+01%,
Percentage 2.46e+01%, Percentage 2.76e+01%, Percentage 3.09e+01%, Percentage 3.66e+01%,
Percentage 3.87e+01%, Percentage 6.02e+01%, Percentage 6.63e+01%
DOI:10.13227/j.hjkx.201607071
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 149>
Accession number:20172603860996
Title:Characteristics and Influencing Factors of Biologically-based Phosphorus Fractions
in the Farmland Soil
Authors:Cai, Guan (1, 2); Hu, Ya-Jun (3); Wang, Ting-Ting (3); Yuan, Hong-Zhao (2, 3);
Wang, Jiu-Rong (2, 3); Li, Qiao-Yun (1); Ge, Ti-Da (3); Wu, Jin-Shui (3)
Author affiliation:(1) College of Bioscience and Biotechnology, Hunan Agricultural
University, Changsha; 410128, China; (2) Public Service Technology Center, Institute of
Subtropical Agriculture, Chinese Academy of Sciences, Changsha; 410125, China; (3) Key
Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical
Agriculture, Chinese Academy of Sciences, Changsha; 410125, China
Corresponding author:Li, Qiao-Yun(1753994368@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1606-1612
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A suitable fractionation method of phosphorus (P) is a key to effective
assessment of soil P componential features. Here a new biologically-based P (BBP) method
was used to evaluate the P fractions in the upland and paddy soils across large-scale
area in China. The soil P was divided into four components: (1) soluble or rhizosphere-
intercepted (CaCl<inf>2</inf>-P), (2)organic acid activated and inorganic weakly bound
(Citrate-P), (3) enzyme mineralization of organic P (Enzyme-P), (4)potential activation
of inorganic P (HCl-P). Then, the relationships between biologically-based P fractions
and standard Olsen-P were investigated, and driving factors of P fractions were
identified. The results showed that P content was in order of HCl-P>Citrate-
P>Enzyme-P>CaCl<inf>2</inf>-P. All P components of upland soil displayed higher
levels than those of paddy soil. Moreover, the P components were highly positively
correlated with the Olsen-P, suggesting that each P component contributed to soil P
availability. However, it was found that Olsen-P was most highly correlated with
CaCl<inf>2</inf>-P and Enzyme-P (R<sup>2</sup>=0.359; R<sup>2</sup>=0.386) in upland
soil, while Olsen-P was most highly with Citrate-P (R<sup>2</sup>=0.788) in paddy soil.
This result indicated that available P of upland soil was mainly from organic P
mineralization and soluble P, and available P in paddy soil was mainly from inorganic P
activation. Redundancy analysis (RDA) showed that the P components were mainly affected
by soil pH and silt content, which suggested that it could enhance the P availability via
regulating soil pH in the agricultural activities. © 2017, Science Press. All right
reserved.
Number of references:27
Main heading:Soils
Controlled terms:Chemical activation - Enzymes - Landforms - Mineralogy - Phosphorus
Uncontrolled terms:Bio-availability - Environmental factors - Paddy soils - Phosphorus
fractionation - Upland soil
Classification code:481.1 Geology - 482 Mineralogy - 483.1 Soils and Soil Mechanics -
804 Chemical Products Generally
DOI:10.13227/j.hjkx.201608178
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 150>
Accession number:20172603860786
Title:Brief Introduction of Pollution Sites Remediation and Risk Assessment and Its
Policy Making in United States
Authors:Rong, Yue (1)
Author affiliation:(1) California Regional Water Quality Control Board, Los Angeles
Region, Los Angeles; CA; 90013, United States
Corresponding author:Rong, Yue(Yrong20373@aol.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1726-1732
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Site remediation has become an imperative part of environmental protection in
China due to recent economic development, urban spreading, new industries replacing old
ones, relocation of old industrial sites, and increased environmental conscience. This
paper mainly introduced the concept, method, calculation, risk assessment and management
for polluted sites remediation based on experience from California, USA. Further, the
paper presented the concept of vapor intrusion and how to use vapor intrusion methodology
to determine site remediation standard. Mathematical modeling approaches were also
discussed in terms of how to determine the residual pollutant concentrations in soil and
how to calculate indoor vapor concentrations. Based on risk assessment, California
Environmental Protection Agency, Water Resources Control Board issued a 'Low Threat
Underground Storage Tank Case Closure Policy'for impacted underground storage tank sites.
The numerical criteria in the Policy were based on calculations of human health risk
assessment. Finally, a real case study in California, USA, was presented to demonstrate
how the risk assessment calculations were applied in polluted site remediation, which
helps to answer the question of 'how clean is clean'. © 2017, Science Press. All
right reserved.
Number of references:8
Main heading:Land reclamation
Controlled terms:Environmental protection - Environmental Protection Agency - Groundwater
resources - Health risks - Indoor air pollution - Mercury (metal) - Pollution - Risk
assessment - Risks - Soil pollution - Tanks (containers) - Urban growth - Water
resources
Uncontrolled terms:Polluted sites - Site cleanup - Site remediation - Soil gas samplings
- Vapor intrusion
Classification code:403.1 Urban Planning and Development - 442.2 Land Reclamation - 444
Water Resources - 444.2 Groundwater - 451 Air Pollution - 454.2 Environmental Impact
and Protection - 461.7 Health Care - 483.1 Soils and Soil Mechanics - 549.3 Nonferrous
Metals and Alloys excluding Alkali and Alkaline Earth Metals - 619.2 Tanks - 914.1
Accidents and Accident Prevention
DOI:10.13227/j.hjkx.201612068
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 151>
Accession number:20172603860997
Title:Effect of Straw Application on the Dynamics of Exogenous Nitrogen and Microbial
Activity in Paddy Soil
Authors:Chen, Shan (1, 2); Ding, Xian-Qing (1, 2); Zhu, Zhen-Ke (2); Wang, Juan (2);
Peng, Pei-Qin (1); Ge, Ti-Da (2); Wu, Jin-Shui (2)
Author affiliation:(1) College of Environmental Science and Engineering, Central South
University of Forestry and Technology, Changsha; 410004, China; (2) Key Laboratory of
Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture,
Chinese Academy of Sciences, Changsha; 410125, China
Corresponding author:Peng, Pei-Qin(pqpeng123@sina.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1613-1621
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Returning straw to the field provides an important source of fertilizer that can
increase soil fertility. However, the rate of straw carbon utilization is low and large
amounts of greenhouse gases are emitted due to the high carbon to nitrogen ratio of the
straw mass. In this regard, the application of inorganic nitrogen and phosphate
fertilizers can control the ratio of elements in the soil, increase the activity of
microorganisms and their utilization of elements, and promote the improvement of soil
fertility. In this study, straw application conditions were simulated, and inorganic
nitrogen fertilizer labeled with<sup>15</sup>N was added to examine the effects of
different nutrient fertilizer additions on the transformation and distribution of
exogenous nitrogen in the soil, and also the characteristics of the microbial response.
The results showed that application of straw increased the contents of ammonia nitrogen
and total nitrogen in the soil and soil solution. When both straw and inorganic nitrogen
fertilizer were applied, the<sup>15</sup>N-TN in the soil remained at 28 to 33 μg
during the 100-day culture phase. In contrast,<sup>15</sup>N-NH<inf>4</inf><sup>
+</sup>increased gradually during the initial 30 days of the culture phase, but
subsequently decreased gradually. Application of phosphate increased the contents
of<sup>15</sup>N-TN and<sup>15</sup>N-NH<inf>4</inf><sup>+</sup>in the soil, but
decreased the content of<sup>15</sup>N in the soil solution by 28%. The distribution of
inorganic nitrogen in the soil showed that the proportion of<sup>15</sup>N in the soil
remained at 52%-61%. Addition of phosphate fertilizer increased the distribution ratio
of<sup>15</sup>N in the soil by up to 16.5%, whereas the proportion of<sup>15</sup>N in
the soil solution decreased from 36% on the fifth day to 30% on the 100<sup>th</sup>day,
thereby the loss amount of<sup>15</sup>N reduced by 1.2-fold. Addition of straw promoted
microbial activity and significantly increased the microbial biomass nitrogen (MBN)
content of the soil. Addition of inorganic fertilizer further promoted the microbial
activity of the soil. After the 100-day culture experiment, the addition of straw,
inorganic nitrogen, and phosphate fertilizer increased MBN to between 2.0-fold and 2.2-
fold that of the control treatments. Addition of phosphate fertilizer increased the
utilization of<sup>15</sup>N by microorganisms, so that the amount of<sup>15</sup>N-MBN
was 1.5-fold higher than that of treatments where only straw and nitrogen fertilizer were
added. Examination of soil enzyme activity showed that nitrogen fertilizer reduced soil
enzyme activity and substrate affinity. When both nitrogen and phosphate fertilizers were
added, the enzyme activity was 48.1% higher than that when only straw was added. The
findings of this study thus provide a theoretical basis for furthering our understanding
on the nitrogen cycle of the paddy soil ecosystem, the improvement of soil fertility, and
the reduction of greenhouse gas emissions. © 2017, Science Press. All right
reserved.
Number of references:50
Main heading:Nitrogen
Controlled terms:Enzyme activity - Enzymes - Fertilizers - Gas emissions - Greenhouse
gases - Mathematical transformations - Microorganisms - Nitrogen fertilizers - Phosphate
fertilizers - Soil moisture - Soils
Uncontrolled terms:<sup>15</sup>N tracing - Control treatments - Inorganic fertilizers -
Inorganic nitrogen - Microbe - Microbial activities - Microbial response - Soil enzyme
activity
Classification code:451.1 Air Pollution Sources - 461.9 Biology - 483.1 Soils and Soil
Mechanics - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 921.3
Mathematical Transformations
Numerical data indexing:Age 2.74e-01yr, Age 8.22e-02yr, Mass 2.80e-08kg to 3.30e-08kg,
Percentage 1.65e+01%, Percentage 2.80e+01%, Percentage 3.00e+01%, Percentage 3.60e+01%,
Percentage 4.81e+01%, Percentage 5.20e+01% to 6.10e+01%
DOI:10.13227/j.hjkx.201609219
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 152>
Accession number:20172703864530
Title:Fractionation and Contamination Assessment of Metal Elements in the Surface
Sediments of Yundang Lagoon in Xiamen
Authors:Yang, Qiu-Li (1, 2); Yu, Rui-Lian (1); Hu, Gong-Ren (1, 2); Lin, Cheng-Qi (1);
Han, Lu (1)
Author affiliation:(1) College of Chemical Engineering, Huaqiao University, Xiamen;
361021, China; (2) State Key Laboratory of Environmental Geochemistry, Institute of
Geochemistry, Chinese Academy of Sciences, Guiyang; 550081, China
Corresponding author:Yu, Rui-Lian(ruiliany@hqu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1010-1017
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Total concentrations of 15 metal elements in the surface sediments of Yundang
Lagoon in Xiamen were determined using ICP-MS. The fractions were extracted by a modified
BCR method. The results indicated that in different areas of Yundang Lagoon, the order of
the concentrations of Cd, Cu, Sr, Pb, Zn and U was: outer lagoon>ditch>inner
lagoon, the order for Cr, Co, Ni, V, Fe, Li, Rb and Mn was: inner lake>outer
lake>ditch. Cu, Zn and Pb were mainly in the reducible phase; Cd was mainly in the
acid soluble-extractable and reducible phases; Co, Ni, U, Fe and Mn were mainly in the
reducible and residual phases; Li, V, Cr, Rb and Ba were dominated by residual phase. The
potential ecological risk of metal elements suggested that V, Cr, Co, Ni, Zn, Cu, Cd and
Pb were at a low potential ecological risk level. The results of ratio of secondary phase
to primary phase (RSP) assessment indicated that Cu, Cd and Zn showed high pollution
level; Pb showed moderate pollution level; Co, Mn, Sr and U were in a low polluted
condition; Ni, Fe, Cr, V, Li, Ba and Rb showed no pollution. In general, Yundang Lagoon
was in a low potential ecological risk. © 2017, Science Press. All right reserved.
Number of references:22
Main heading:Copper
Controlled terms:Cadmium - Ecology - Lake pollution - Lakes - Lead - Lithium - Manganese
- Metals - Nickel - Pollution - Rubidium - Sediments - Surficial sediments - Zinc
Uncontrolled terms:Assessment - Contamination assessment - Fractions - Metal elements -
Potential ecological risk - Reducible phasis - Surface sediments - Yundang lagoons
Classification code:453 Water Pollution - 454.3 Ecology and Ecosystems - 483 Soil
Mechanics and Foundations - 543.2 Manganese and Alloys - 544.1 Copper - 546.1 Lead and
Alloys - 546.3 Zinc and Alloys - 548.1 Nickel - 549.1 Alkali Metals - 549.3
Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals
DOI:10.13227/j.hjkx.201607125
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 153>
Accession number:20172703864560
Title:Effects of Lithology on the Abundance and Composition of Soil Nitrogen-fixing
Bacteria and Arbuscular Mycorrhizal Fungal Communities in Karst Shrub Ecosystem
Authors:Liang, Yue-Ming (1, 2); Su, Yi-Rong (1); He, Xun-Yang (1); Chen, Xiang-Bi (1)
Author affiliation:(1) Key Laboratory of Agro-ecological Processes in Subtropical Region,
Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha; 410125,
China; (2) Key Laboratory of Karst Dynamics, Institute of Karst Geology, Chinese Academy
of Geological Sciences, Guilin; 541004, China
Corresponding author:Su, Yi-Rong(yrsu@isa.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1253-1261
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Lithology is a key factor when used to restore vegetation in karst degraded
ecosystems, and arbuscular mycorrhizal (AM) fungi and nitrogen-fixing bacteria play an
important role in improving plant growth. However, little information is available
regarding the effects of lithology on these two groups of microorganisms. To test whether
these microbial communities are impacted by lithology, the abundance and composition of
soil AM fungal and nitrogen-fixing bacteria communities were determined through terminal
restriction fragment length polymorphism (T-RFLP) and real-time fluorescence-based
quantitative PCR (real-time PCR). Three types of lithology (dolomite, limestone and
dolomite-limestone) were selected in this study. The diversity, richness, and evenness of
plant species were evaluated through field surveys and soil properties were measured. The
results showed that the abundances of soil nitrogen-fixing bacteria and arbuscular
mycorrhizal fungal communities were significantly influenced by lithology. The abundances
of these two groups of microorganisms were the lowest in dolomite soil, inferior to
dolomite-limestone soil, while highest in limestone soil. Similarly, the composition of
soil nitrogen-fixing bacteria and AM fungi communities varied among lithology. A
significant linear correlation was observed among soil organic carbon, available
phosphorus, clay content and nitrogen-fixing bacterial abundance (P<0.05), and a
significant linear correlation among total nitrogen, clay content and AM fungal abundance
(P<0.05). Redundancy analysis showed that the composition of nitrogen-fixing bacterial
community was closely linked to plant evenness, and the AM fungal community composition
was closely linked to plant diversity (plant evenness, Shannon-wiener and richness).
These results indicated that lithology influenced the abundances and compositions of soil
nitrogen-fixing bacteria and arbuscular mycorrhizal (AM) fungal communities mainly
through plant and soil properties. © 2017, Science Press. All right reserved.
Number of references:53
Main heading:Bacteria
Controlled terms:Carbon - Ecology - Ecosystems - Forestry - Fungi - Landforms - Limestone
- Lithology - Microorganisms - Nitrogen - Nitrogen fixation - Organic carbon -
Polymerase chain reaction - Soil testing - Soils
Uncontrolled terms:Arbuscular mycorrhizal - Arbuscular mycorrhizal fungi - Community
structures - Fungal community compositions - Karst - Microbial communities - Nitrogen
fixing bacteria - Terminal restriction fragment length polymorphisms
Classification code:454.3 Ecology and Ecosystems - 461.9 Biology - 481.1 Geology -
483.1 Soils and Soil Mechanics - 801.2 Biochemistry - 802.2 Chemical Reactions - 804
Chemical Products Generally - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201606215
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 154>
Accession number:20172703864521
Title:Magnetic Characteristics and Environmental Pollution Analysis of Street Dust in
Different Functional Zones of Xi'an City
Authors:Fang, Ni (1); Zhang, Jun-Hui (1); Wang, Jin (1); Jiang, Shan (1); Xia, Dun-Sheng
(2)
Author affiliation:(1) Shaanxi Key Laboratory of Disasters Monitoring & Mechanism
simulation, Baoji University of Arts and Sciences, Baoji; 721016, China; (2) Key
Laboratory of Western China's Environmental Systems, Ministry of Education, Lanzhou
University, Lanzhou; 730000, China
Corresponding author:Zhang, Jun-Hui(bwlzjh@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:924-935
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Urban environmental pollution can be revealed by the magnetic characteristics of
street dust. Environmental magnetic measurements were carried out for the 151 samples of
street dust collected in different functional zones of Xi'an city. Magnetic
susceptibility varied within the range between 169.5×10<sup>-
8</sup>m<sup>3</sup>·kg<sup>-1</sup>and 977.48×10<sup>-
8</sup>m<sup>3</sup>·kg<sup>-1</sup>, and the χ<inf>lf</inf>average value was
415.66×10<sup>-8</sup>m<sup>3</sup>·kg<sup>-1</sup>, which was 10 times
higher than that of the background value. Isothermal remanent magnetization varied within
the range between 2005.31×10<sup>-5</sup>A·m<sup>2</sup>·kg<sup>-
1</sup>and 10897.64×10<sup>-5</sup>A·m<sup>2</sup>·kg<sup>-1</sup>,
and the SIRM average value was 5105.99×10<sup>-
5</sup>A·m<sup>2</sup>·kg<sup>-1</sup>. The average value of frequency-
dependent magnetic susceptibility was 1.30, which was extremely low. The SIRM curve was
consistent with χ<inf>lf</inf>curve. The results indicated a high concentration of
magnetic minerals in street dust. The magnetic minerals were mainly low-coercivity
ferrimagnetic (magnetite and maghemite) and anti-ferromagnetic minerals (hematite), which
contributed to the magnetic susceptibility. The main domains of magnetic minerals were
composed of multiple domain (MD) and pseudo-single domain (PSD) ferrimagnetic minerals
demonstrating the pollution of environment. According to the spatial distribution of
magnetic properties of street dust and the different functional zones of Xi'an city,
seven districts (A, B, C, D, E, F and G areas) were divided, which were summarized as
three pollution types: heavily polluted, moderately polluted and lightly polluted. In the
ecological district of Baqiao (F area) which was heavily polluted, χ<inf>lf</inf>,
SIRM and soft values were all the highest in the seven areas, and the main pollution
sources were industry and vehicle emission. χ<inf>lf</inf>, SIRM and soft values were
slightly higher in the high-tech industrial district (A area) and the central business
and commerce district (B area), which was moderately polluted by industry and vehicle
emission. However, the magnetic parameters were relatively low in the functional zones of
education, tourism and culture (C, D, E and G area), demonstrating that these areas were
only slightly polluted by vehicle emission. © 2017, Science Press. All right
reserved.
Number of references:45
Main heading:Magnetic levitation vehicles
Controlled terms:Air pollution - Dust - Ferrimagnetism - Industrial emissions - Magnetic
domains - Magnetic properties - Magnetic susceptibility - Magnetism - Minerals -
Pollution - Vehicles
Uncontrolled terms:Environmental pollutions - Ferrimagnetic minerals - Functional zones -
Isothermal remanent magnetization - Magnetic characteristic - Pseudo single domains -
Street dust - Xi'an cities
Classification code:451 Air Pollution - 451.1 Air Pollution Sources - 482.2 Minerals -
701.2 Magnetism: Basic Concepts and Phenomena
DOI:10.13227/j.hjkx.201604074
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 155>
Accession number:20172703864544
Title:A New Model for the Treatment of Low Ammonia Nitrogen Wastewater by CANON Process
Authors:Wanyan, De-Qing (1, 2); Yuan, Yi (1, 2); Li, Xiang (1, 2); Bi, Zhen (1, 2)
Author affiliation:(1) School of Environment Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Institute of Environmental
Biotechnology, Suzhou University of Science and Technology, Suzhou; 215009, China
Corresponding author:Yuan, Yi(yiyuansuzhou@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1122-1129
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Automatic aeration and recirculation of effluent were used to start CANON
process with up flow sludge bed reactor, and the start-up and operation characteristics
of the process were studied. The results showed that the CANON process could be started
quickly and stably by the method of reoxygenation reflux under the conditions of sludge
volume fraction 25%, NH<inf>4</inf><sup>+</sup>-N 157 mg·L<sup>-1</sup>, HRT 2 h.
After 50 days of operation, the total nitrogen removal rate increased from 1.31
kg·(m<sup>3</sup>·d)<sup>-1</sup>to 1.47 kg·
(m<sup>3</sup>·d)<sup>-1</sup>; the reoxygenation reflux manner could effectively
control the amount of dissolved oxygen in the reactor, resulting in DO<0.01
mg·L<sup>-1</sup>, which had a good inhibitory effect on the NOB in the system,
and meanwhile provided a good growth environment for AnAOB; By controlling the reflux
flow, the production rate of NO<inf>2</inf><sup>-</sup>could be precisely controlled,
reaching a good balance with NO<inf>2</inf><sup>-</sup>consumption rates, and thus
avoiding the accumulation of NO<inf>2</inf><sup>-</sup>and occurrence of nitration
reactions. Therefore, reoxygenation reflux CANON process showed a great advantage in the
operation stability, which provided a new model for the start-up and stable operation of
CANON process. © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Nitration
Controlled terms:Dissolved oxygen - Effluents - Nitrogen - Nitrogen compounds - Nitrogen
oxides - Nitrogen removal - Wastewater treatment
Uncontrolled terms:Ammonia nitrogen wastewaters - ANAMMOX - Autotrophic nitrogen removal
- Operation characteristic - Operation stability - Reoxygenation - Sludge volume
fractions - Total nitrogen removal
Classification code:452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and
Disposal - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.2
Inorganic Compounds
Numerical data indexing:Age 1.37e-01yr, Mass_Density 1.57e-01kg/m3, Percentage 2.50e+01%,
Time 7.20e+03s
DOI:10.13227/j.hjkx.201609203
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 156>
Accession number:20172603849676
Title:Effects of Acidic Materials on the N Transformations During the Composting of Pig
Manure and Wheat Straw
Authors:Jiang, Ji-Shao (1); Yao, Qian (1)
Author affiliation:(1) Henan Key Laboratory for Environmental Pollution Control, School
of Environment, Henan Normal University, Xinxiang; 453007, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1272-1277
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Understanding the effects of acidic materials on the N transformations becomes
of critical importance to choose the additives with preserving nitrogen during the manure
composting. A 40 d static composting experiment was conducted in the laboratory to
explore the effects of acidic materials on changes of temperature, pH, EC (electrical
conductivity), GI (germination index), N compounds and TOC (total organic carbon) during
the composting of pig manure and wheat straw. Three acidic materials were selected as the
additives, including phosphate fertilizer (P), rotten apples (A) and vinegar (V). The
results showed that the duration with temperature higher than 50℃ in four
treatments all exceeded ten days and reached the health standard of high temperature
composting. The addition of phosphate fertilizer delayed the time of the pile entering
into the high temperature stage, decreased the pH, and increased the EC during the whole
composting. On a mass basis, 53.1%, 36.2%, 46.5% and 41.5% of original amount of N in CK,
P, A and V were lost during the first 16 d, but there was still 20% N loss during 16-24 d
in P and V treatments. The NH<inf>3</inf>-N loss accounted for 26.0%, 11.8%, 21.5% and
20.2% of the N loss. The addition of acidic materials effectively reduced the N loss and
the emissions of NH<inf>3</inf>, and the phosphate fertilizer showed the best effect. In
the end of composting, the GI all exceeded 80%, and met maturity requirements. ©
2017, Science Press. All right reserved.
Number of references:32
Main heading:Fertilizers
Controlled terms:Acetic acid - Carbon - Composting - Fruits - Manures - Organic carbon -
Phosphate fertilizers - Piles - Straw
Uncontrolled terms:Electrical conductivity - Germination index - High temperature -
Manure composting - N transformation - Rotten apples - Total Organic Carbon - Vinegar
Classification code:408.2 Structural Members and Shapes - 804 Chemical Products
Generally - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
Numerical data indexing:Percentage 1.18e+01%, Percentage 2.02e+01%, Percentage 2.15e+01%,
Percentage 2.60e+01%, Percentage 3.62e+01%, Percentage 4.15e+01%, Percentage 4.65e+01%,
Percentage 5.31e+01%, Percentage 8.00e+01%
DOI:10.13227/j.hjkx.201609161
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 157>
Accession number:20172703864545
Title:Effects of Side-stream Phosphorus Recovery on the Performance of EBPR System Under
Low Dissolved Oxygen Condition
Authors:Ma, Juan (1); Song, Lu (1); Yu, Xiao-Jun (1); Sun, Lei-Jun (1); Sun, Hong-Wei (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Lanzhou
Jiaotong University, Lanzhou; 730070, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1130-1136
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A sequencing batch reactor (SBR) was operated with alternating anaerobic/oxic
(An/O) condition to investigate the nitrogen and phosphorus removal performance of EBPR
with DO=1 mg·L<sup>-1</sup>and the phosphorus recovery effect at extracting side
stream ratio of 0, 1/4, 1/3, 1/2 anaerobic phosphorus supernatant. The removal efficiency
of NH<inf>4</inf><sup>+</sup>-N was found to be relatively stable during all experimental
stages but effluent COD of the system during later period remained as high as 81.3
mg·L<sup>-1</sup>. In the absence of side stream, the average phosphorus removal
efficiency was 89.4% and increased to 98.5% and 99.0% when the side stream ratio was 1/4
and 1/3, respectively. However, the phosphorus removal performance began to fluctuate
with side stream ratio of 1/2 and the lowest phosphorus removal rate was 65.4%. During
each experimental stage, only one day effluent TP failed to meet the national wastewater
discharge standard A with side stream ratio of 1/3 in the initial period. Besides, 93.3%
of effluent TP which could meet the national standard with side stream ratio of 1/3 was
far better than 45.5% of that with side stream ratio of 1/2. Nevertheless, the phosphorus
recovery rate improved with the increase of side stream ratio. It was also observed that
the TN removal rate dramatically decreased to 50.9% when the side stream ratio increased
to 1/2. Consequently, a side stream ratio of 1/3 was found to be the optimal condition in
the whole experimental stage, and EBPR system under low dissolved oxygen condition
combined with phosphorus recovery through extracting side stream could greatly improve
the economic and environmental benefits. © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Dissolved oxygen
Controlled terms:Batch reactors - Dissolution - Efficiency - Effluents - Nitrogen removal
- Oxygen - Phosphorus - Recovery - Water aeration
Uncontrolled terms:Anaerobic - Economic and environmental benefits - Low dissolved oxygen
- Nitrogen and phosphorus removal - Phosphate recovery - Removal efficiencies -
Sequencing batch reactors - Side streams
Classification code:445.1 Water Treatment Techniques - 452.3 Industrial Wastes - 802.1
Chemical Plants and Equipment - 802.3 Chemical Operations - 804 Chemical Products
Generally - 913.1 Production Engineering
Numerical data indexing:Mass_Density 8.13e-02kg/m3, Percentage 4.55e+01%, Percentage
5.09e+01%, Percentage 6.54e+01%, Percentage 8.94e+01%, Percentage 9.33e+01%, Percentage
9.85e+01%, Percentage 9.90e+01%
DOI:10.13227/j.hjkx.201609183
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 158>
Accession number:20172703864556
Title:Influence of the Application of Non-Hazardous Sewage Sludge on the Evolution of
Soil Carbon Pool and Carbon Pool Management Index
Authors:Liu, Xiao (1); Huang, Lin (2); Guo, Kang-Li (1); Zhang, Xue-Ling (3); Yang, Jun-
Cheng (1); Jiang, Hui-Min (1); Zhang, Jian-Feng (1)
Author affiliation:(1) National Engineering Laboratory for Improving Quality of Arable
Land, Institute of Agricultural Resources and Regional Planning, Chinese Academy of
Agriculture Science, Beijing; 100081, China; (2) Sewage Purification Co., Ltd. of
Zhengzhou City, Zhengzhou; 450000, China; (3) College of Environment, Sichuan
Agricultural University, Chengdu; 611130, China
Corresponding author:Jiang, Hui-Min(jianghuimin@caas.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1218-1226
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The products of non-hazardous commercial sewage sludge were utilized in the
accordance of the national standard in the experiment with sandy fluvo-aquic soil under
wheat-maize rotation system during 2013 to 2015. The experiment focused on the effects of
the use of non-hazardous sewage sludge on soil carbon pool and carbon pool management
index to provide theoretical and technical basis for the resource utilization of non-
hazardous sewage sludge. The results showed that compared with CK, soil amended sludge
significantly improved soil total organic carbon (TOC), soil microbial biomass carbon
(SMBC), labile organic carbon (LOC), and dissolved organic carbon (DOC) to 8.40-14.74
g·kg<sup>-1</sup>, 164.45-257.45 mg·kg<sup>-1</sup>, 3.58-4.88
g·kg<sup>-1</sup>and 81.16-101.58 mg·kg<sup>-1</sup>, soil amended sludge
significantly enhanced SMBC, LOC and DOC by 84.00%-188.07%, 26.26%-58.03%, and 109.58%-
185.39% (P<0.05) respectively, and 45 t·hm<sup>-2</sup>sewage sludge (W3) had
the most significant impact on soil carbon pool. The soil microbial entropy (SMBC/TOC),
and utilization of labile organic carbon (LOC/TOC) increased by 8.02%-2.77% and 13.75%-
46.48% respectively, and the utilization of dissolved organic carbon (DOC/TOC)
significantly decreased by 153.45%-195.40% (P<0.05). SMBC/TOC, LOC/TOC, and DOC/TOC
declined in treatments of soil amended sludge due to increased application of sewage
sludge, which indicated that soil amended with 45 t·hm<sup>-2</sup>of the sewage
sludge improved the content of stable carbon resulting in the decease of the ratio. L and
LI decreased with the increasing amount of sewage sludge indicating that soil amended
with 45 t·hm<sup>-2</sup>of the sewage sludge improved the content of stable
carbon and was conducive to the accumulation of organic carbon. Soil amended with sludge
significantly increased carbon pool management index (CMPI) by 153.45%-195.40%
(P<0.05), and W3 had the most significant effect on CMPI. Compared with TOC, CMPI
could be more sensitive and direct to reflect the dynamic changes of soil nutrients and
carbon pools through the correlation analysis and redundancy analysis. In summary, the
application of 15-45 t·hm<sup>-2</sup>sewage sludge could significantly enhance
the soil carbon pool and carbon pool management index, especially 45 t·hm<sup>-
2</sup>sewage sludge (W3). © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Organic carbon
Controlled terms:Carbon - Hazards - Lakes - Sewage sludge - Soils - Stream flow
Uncontrolled terms:Carbon pool - Dissolved organic carbon - Fluvo-aquic soils - Resource
utilizations - Soil carbon pool - Soil microbial biomass carbons - Total Organic Carbon -
Utilization ratio of carbon
Classification code:407.2 Waterways - 452.2 Sewage Treatment - 483.1 Soils and Soil
Mechanics - 804 Chemical Products Generally - 804.1 Organic Compounds - 914.1
Accidents and Accident Prevention
Numerical data indexing:Percentage 1.38e+01% to 4.65e+01%, Percentage 8.02e+00% to 2.77e
+00%, Percentage 8.40e+01% to 1.88e+02%
DOI:10.13227/j.hjkx.201607139
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 159>
Accession number:20172703864512
Title:Reactivity-based Anthropogenic VOCs Emission Inventory in China
Authors:Liang, Xiao-Ming (1); Zhang, Jia-Ni (1); Chen, Xiao-Fang (1); Shi, Tian-Li (1);
Sun, Xi-Bo (1); Fan, Li-Ya (1, 2, 3); Ye, Dai-Qi (1, 2, 3)
Author affiliation:(1) School of Environment and Energy, South China University of
Technology, Guangzhou; 510006, China; (2) Guangdong Provincial Key Laboratory of
Atmospheric Environment and Pollution Control (SCUT), Guangzhou; 510006, China; (3) Air
Pollution Control of Guangdong University Engineering Technology Research Center (SCUT),
Guangzhou; 510006, China
Corresponding author:Ye, Dai-Qi(cedqye@scut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:845-854
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A reactivity-based anthropogenic volatile organic compounds (VOCs) emission
inventory in China in 2010 was developed on the basis of ozone formation potential (OFP),
using the latest VOCs emission inventory, source profiles and maximum incremental
reactivity (MIR) values. The results showed that the total anthropogenic OFP was 84187.61
kt in China in 2010, of which 6 882.53 kt was from alkanes, 41496.92 kt from
alkenes/alkynes, 32945.32 kt from aromatic hydrocarbons, 161.45 kt from halocarbons, and
2701.40 kt from oxygenated organics. The top 10 species in terms of OFP consisted of
propene, ethene, m/p-xylene, toluene, 1-butene, o-xylene, 1,2,4-trimethyl benzene, 1,3-
butadiene, m-ethyl toluene and ethyl benzene, contributing 63.95% to the total OFP but
only 31.84% to the mass-based emission. Industrial sources accounted for the largest
(49.29%) of the total OFP, followed by transportation sources (28.31%) and agricultural
sources (22.40%). The key industrial sources with high reactivity were architectural
decoration industry, oil refinery industry, storage and transport, machinery equipment
industry, transport equipment industry and printing. Passenger cars, motorcycles and
heavy duty vehicles were the major OFP sources of transportation. The two biomass burning
sources were both the key OFP sources of agriculture. Shandong, Jiangsu, Guangdong,
Zhejiang and Henan were the top five provinces with contributions of 39.65% of the total
OFP in China. The reactivity-based emission inventory in this study would be of great
significance for the formulation of reactivity-based ozone (O<inf>3</inf>) control
strategies in China. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Ozone
Controlled terms:Agriculture - Architectural design - Architecture - Aromatic
hydrocarbons - Benzene - Butenes - Ethylene - Machinery - Organic compounds - Toluene -
Volatile organic compounds - Xylene
Uncontrolled terms:Agricultural sources - Anthropogenic sources - China - Emission
inventories - Heavy duty vehicles - Machinery equipments - Maximum incremental
reactivities - Ozone formation potentials
Classification code:402 Buildings and Towers - 804 Chemical Products Generally - 804.1
Organic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
Numerical data indexing:Percentage 2.24e+01%, Percentage 2.83e+01%, Percentage 3.96e+01%,
Percentage 4.93e+01%
DOI:10.13227/j.hjkx.201609162
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 160>
Accession number:20171003416430
Title:Bioaccumulation of halogenated flame retardants in fish of dongjiang river
Authors:He, Ming-Jing (1, 2); Yang, Ting (1); Li, Qi (1); Wang, Deng-Xiang (1); Zhao,
Jia-Yuan (1)
Author affiliation:(1) College of Resources and Environment Science, Southwest
University, Chongqing; 400716, China; (2) Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400716, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:382-388
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Bioaccumulation factor (BAF)plays a key role in identification of
bioaccumulative substance and in assessment of chemical risks. In order to reveal the
bioaccumulation behavior of fish in Dongjiang River, sediment, water and fish samples
were collected from Dongjiang River and PBDEs, DBDPE, DP, TBBPA and HBCDs were measured.
The ranges of lgBAF were 5.0-7.4, 6.1-7.1, 4.6-7.9, 2.6-4.6 and 4.8-7.7, respectively. In
the present study, most HFRs had a lgBAF of higher than 3.7, which suggested that they
might be bioaccumulative. The BAF values of HFRs increased with increasing
lgK<inf>ow</inf>, when lgK<inf>ow</inf>>7, the bioaccumulation extent decreased with
the increase of lgK<inf>ow</inf>. Biotransformation of γ-HBCD toward α-HBCD
and the metabolism of BDE66 and BDE99 of these isomers might attribute to the deviation
from the general trend predicted by K<inf>ow</inf>. More attention should be paid to
DBDPE, since its BAF value was higher than that of BDE209. The BSAF values of most PBDEs,
DBDPE, DP, TBBPA and HBCDs congeners in three fish species were less than 1, indicating
that these compounds were unlikely to become a source of pollution to the aquatic
organisms due to the poor bioavailability. © 2017, Science Press. All right
reserved.
Number of references:35
Main heading:Flame retardants
Controlled terms:Aquatic organisms - Barium compounds - Bioaccumulation - Biochemistry -
Fish - Halogenation - Isomers - Metabolism - Organic pollutants - Risk assessment -
River pollution - Rivers
Uncontrolled terms:Bioaccumulation factor - Biota-sediment accumulation factors -
Chemical risks - Dongjiang rivers - Fish samples - Fish species - General trends -
Halogenated flame retardant
Classification code:453 Water Pollution - 461.9 Biology - 471 Marine Science and
Oceanography - 801.2 Biochemistry - 802.2 Chemical Reactions - 803 Chemical Agents and
Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds
- 914.1 Accidents and Accident Prevention
DOI:10.13227/j.hjkx.201607155
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 161>
Accession number:20171003416409
Title:Cathode electric field enhanced removal of nitrobenzene from aqueous solution based
on activated carbon fibers (ACF)-Ozone technique
Authors:Zhao, Chun (1, 2, 4); Zhang, Shuai (1); Zhou, Yu (3); Li, Kun (1); Zhou, Wei (1);
Li, Peng-Yu (1); Yang, Guang (4); Sun, Zhi-Hua (4); Zheng, Huai-Li (1, 2)
Author affiliation:(1) Key Laboratory of the Three Gorges Reservoir Region's Eco-
Environment, Ministry of Education, Chongqing University, Chongqing; 400045, China; (2)
National Centre for International Research of Low-carbon and Green Buildings, Chongqing
University, Chongqing; 400045, China; (3) West Branch, China Academy of Urban Planning
& Design, Chongqing; 400021, China; (4) College of Water Conservancy and
Architectural Engineering, Shihezi University, Shihezi; 832003, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:212-219
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Through the environmental factors impact experiments, such as current intensity,
initial pH value of the reaction solution, and the type and concentration of the
electrolyte, effect and mechanism of electrochemically enhanced removal of nitrobenzene
from aqueous solution on activated carbon fibers (ACF)-ozone technique were studied. The
result showed that compared with the ACF-O<inf>3</inf>system, the removal efficiency of
NB in electrochemically enhanced ACF-O<inf>3</inf>system was significantly improved. The
effect of current intensity on the NB removal efficiency in the electrochemically
enhanced ACF-O<inf>3</inf>system was not significant. O<inf>3</inf>concentration had some
effect on the NB removal efficiency. The pH value of the initial reaction solution had a
great influence on the catalytic activity of ACF in ACF-O<inf>3</inf>system. The presence
of inorganic salts such as sodium sulfate, sodium nitrate and sodium chloride inhibited
the catalytic ability of ACF in O<inf>3</inf>system. In addition, ACF was destroyed by
ozone and the promoting effect of ACF was reduced. When the cathode electric field was
applied on the surface of ACF, the removal effect of the organic compounds by ACF-
O<inf>3</inf>was improved significantly and the structure of ACF was not destroyed by
ozone. © 2017, Science Press. All right reserved.
Number of references:31
Main heading:Ozone
Controlled terms:Activated carbon - Carbon fibers - Catalyst activity - Cathodes -
Efficiency - Electric fields - Electrochemistry - Electrodes - Electrolytes -
Nitrobenzene - pH - Sodium sulfate - Solutions
Uncontrolled terms:Advanced oxidation - Catalytic ability - Current intensity -
Environmental factors - Impact experiment - Initial pH value - Reaction solutions -
Removal efficiencies
Classification code:701.1 Electricity: Basic Concepts and Phenomena - 801.1 Chemistry,
General - 801.4.1 Electrochemistry - 804 Chemical Products Generally - 913.1
Production Engineering
DOI:10.13227/j.hjkx.201607054
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 162>
Accession number:20171003409534
Title:Possible sources of PCDD/Fs in atmosphere of a certain district in Guangdong
Authors:Fu, Jian-Ping (1); Han, Jing-Lei (1); Yu, Xiao-Wei (1); Yang, Yan-Yan (1); Yin,
Wen-Hua (1); Feng, Gui-Xian (1); Zhang, Su-Kun (1); Huang, Jin-Qiong (1); Ren, Ming-Zhong
(1)
Author affiliation:(1) South China Institute of Environmental Sciences, Ministry of
Environmental Protection, Guangzhou; 510655, China
Corresponding author:Han, Jing-Lei(hanjinglei@scies.org)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:502-509
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This paper analyzed 17 polychlorinated dibenzo-p-dioxins and dibenzofurans
(PCDD/Fs) by HRGC/HRMS in the flue gas of a certain municipal solid waste incinerator
(MSWI) and its surrounding air and other possible sources in Guangdong. It discussed the
feature of homologs and main toxic monomers in all samples. It also investigated the
relationship among surrounding area, MSWI and possible sources using principle component
analysis (PCA) and cluster analysis. The results showed that the concentration of PCDD/Fs
was higher in the flue gas than the ambient air, moreover non-effect suffered by
prevailing wind direction. The possible sources might be tyre factory and open burning
based on spot survey. The concentration of PCDD/Fs was lower in tyre factory than upwind
station, but higher at open burning spot than outdrop monitoring station. The analysis of
homologs showed that OCDD, 1, 2, 3, 4, 6, 7, 8-HpCDD and 1, 2, 3, 4, 6, 7, 8-HpCDF were
the main materials in the flue gas and air, meanwhile OCDF was also found in atmosphere.
There was similar feature of 17 PCDD/Fs between surrounding monitoring station and tyre
factory, and the same between flue gas and open burning. The further analysis showed that
the linearly dependent coefficients of 1, 2, 3, 7, 8-PeCDD and 2, 3, 4, 6, 7, 8-HxCDF
were 0.95 and 0.75, respectively. It showed the strong correlation of two monomers in all
ambient air samples. The PCA and cluster analysis showed that MSWI influenced the
surrounding air, tyre factory had an impact on upwind station, and open burning had a
lower effect on outdrop monitoring station. © 2017, Science Press. All right
reserved.
Number of references:28
Main heading:Waste incineration
Controlled terms:Cluster analysis - Flue gases - Flues - Gases - Incineration - Monomers
- Municipal solid waste - Organic pollutants - Principal component analysis - Solid
wastes - Tires
Uncontrolled terms:Ambient air - Monitoring stations - Municipal solid waste incinerator
- Open burning - Polychlorinated dibenzo-p-dioxins and dibenzofurans - Prevailing wind
directions - Principle component analysis - Strong correlation
Classification code:451.1 Air Pollution Sources - 452 Municipal and Industrial Wastes;
Waste Treatment and Disposal - 452.4 Industrial Wastes Treatment and Disposal - 723
Computer Software, Data Handling and Applications - 804 Chemical Products Generally -
804.1 Organic Compounds - 818.5 Rubber Products - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201606178
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 163>
Accession number:20171003416393
Title:Sedimentary characteristics and sources of organic matter in sediments of Dianchi
Lake
Authors:Han, Xiu-Xiu (1, 2, 3); Huang, Xiao-Hu (3); Yu, Li-Yan (3); Yang, Hao (3); Huang,
Chang-Chun (1, 2, 3); Huang, Tao (1, 2, 3); Yu, Yan-Hong (4); Luo, Yu (4)
Author affiliation:(1) Jiangsu Center for Collaborative Innovation in Geographical
Information Resource Development and Application, Nanjing; 210023, China; (2) Jiangsu
Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing; 210023,
China; (3) College of Geography Science, Nanjing Normal University, Nanjing; 210023,
China; (4) Yunnan Institute of Environmental Science, Kunming China International
Research Center for Plateau Lake, Kunming; 650000, China
Corresponding author:Huang, Chang-Chun(huangchangchun@njnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:78-86
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Sediment columns in the southeast and east of Dianchi Lake were taken as the
object of the study to determine ages by<sup>210</sup>Pb dating method. The contents and
sediment fluxes of total organic carbon (TOC) and n-alkanes of the sediments were
investigated, and organic sources were tracked according to the relevant indexes of n-
alkanes. The results indicated that TOC contents and sediment fluxes of two sampling
sediments both presented an increasing trend on the whole; Sediment fluxes of n-alkanes
varied as three stages: increasing period, decreasing period and re-increasing period.
When the sediment fluxes of n-alkanes and TOC both went up, it showed that they had the
same sources: sediments in the lake and carried by the rivers; From 1980s to the end of
20<sup>th</sup>century, sediment fluxes of n-alkanes were going down while those of TOC
were going up. This result means there was a big difference in the sources of n-alkanes
and TOC. The bacteria and algae in the lake made a great contribution to n-alkanes while
TOC was mainly influenced by sediments in the lake and carried by the rivers. n-alkanes
of the two sampling sites both ranged from C<inf>12</inf>to C<inf>35</inf>. Based on the
basic features and relevant indexes of n-alkanes, we proposed that emergent plants made
big contributions to the sources of organic matter in the sediments of Dianchi Lake,
simultaneously, bacteria and algae had significant contributions to the sources of
organic matter in shallow depth of Dianchi Lake. © 2017, Science Press. All right
reserved.
Number of references:42
Main heading:Paraffins
Controlled terms:Algae - Bacteria - Biogeochemistry - Biological materials - Carbon -
Lakes - Organic carbon - Organic compounds - Sediments
Uncontrolled terms:Emergent plants - n-Alkanes - Organic sources - Sediment column -
Sediment flux - Sedimentary characteristics - Source apportion - Total Organic Carbon
Classification code:461.2 Biological Materials and Tissue Engineering - 481.2
Geochemistry - 483 Soil Mechanics and Foundations - 804 Chemical Products Generally -
804.1 Organic Compounds
DOI:10.13227/j.hjkx.201606051
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 164>
Accession number:20171003416418
Title:Identification of efficient strain applied to mining rehabilitation and its rock
corrosion mechanism: based on boosted regression tree analysis
Authors:Wu, Yan-Wen (1); Zhang, Jin-Chi (1); Guo, Xiao-Ping (1); Liu, Xin (1)
Author affiliation:(1) Jiangsu Province Key Laboratory of Soil and Water Conservation and
Ecological Restoration, Co-Innovation Center for Sustainable Forestry in Southern China,
Nanjing Forestry University, Nanjing; 210037, China
Corresponding author:Zhang, Jin-Chi(zhangjc8811@sohu.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:283-293
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The soil and water loss problem in rock mining areas is an extremely serious
problem, and microbes play significant roles in ecological restoration of those areas. In
this study, directive screening was used to explore the efficiency of microbe-mediated
habitat restoration and the underlying mechanisms. A bacterial strain NLX-4, which was
then identified as Pseudomonas protegens according to its 16S rRNA gene sequence, was
screened out as an efficient silicate dissolution bacterium with the ability to secrete
siderophore and indole-3-acetic acid (IAA). Moreover, pH value, element (K, Al, Si)
release, organic acid content, amino acid concentration, polysaccharide content, and rock
particle diameter variation in culture medium were analyzed to explore the ability of P.
protegens NLX-4 to promote dolomite dissolution under controlled experimental conditions.
These results showed that P. protegens NLX-4 could play a positive role in dolomite
dissolution by producing tartaric acid (>777 mg·L<sup>-1</sup>) and
polysaccharides (>8.21g·L<sup>-1</sup>). Therefore, P. protegens NLX-4 is an
efficient microbial resource that can be used in rehabilitation of abandoned mines and
has great application potential. © 2017, Science Press. All right reserved.
Number of references:51
Main heading:Weathering
Controlled terms:Abandoned mines - Bacteria - Dissolution - Ecology - Microorganisms -
Organic acids - pH - Restoration - RNA - Rocks - Silicate minerals - Silicates
Uncontrolled terms:Biological weathering - Ecological restoration - Pseudomonas sp - Rock
mining - Silicate rocks
Classification code:454.3 Ecology and Ecosystems - 461.2 Biological Materials and
Tissue Engineering - 461.9 Biology - 482.2 Minerals - 502.1 Mine and Quarry Operations
- 801.1 Chemistry, General - 802.3 Chemical Operations - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201607075
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 165>
Accession number:20171003409542
Title:Preparation and phosphorus removal mechanism of highly efficient phosphorus
adsorbent Mg/Al-LDO
Authors:Wang, Wei-Dong (1); Hao, Rui-Xia (1); Zhang, Xiao-Xian (1); Wan, Jing-Jing (1);
Zhong, Li-Yan (1)
Author affiliation:(1) Key Laboratory of Beijing for Water Quality Science and Water
Environment Recovery Engineering, College of Architectural Engineering, Beijing
University of Technology, Beijing; 100124, China
Corresponding author:Hao, Rui-Xia(haoruixia@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:572-579
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Aiming at the problem of phosphorus removal in water, Mg/Al-layered double
hydroxides (Mg/Al-LDHs) were synthesized via optimized constant pH co-precipitation
method, and highly efficient phosphorus adsorbent Mg/Al-layered double oxide(Mg/Al-LDO)
was obtained when it was calcined at high temperature. Based on the adsorption
characteristics of phosphorus removal, the study combined Zeta potential, X-ray
diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) to analyze the
changes of isoelectric point, crystal structure and functional group before and after
adsorption. In addition, Mg/Al-LDO of phosphorus adsorption mechanism was discussed. The
results indicated that using the optimized co-precipitation method in the conditions of
Mg/Al=2∶1, calcination temperature 450℃, and calcination time 2 h, the
Mg/Al-LDO adsorption capacity of phosphate was the best, and the maximum adsorption
capacity could reach 176.94 mg·g<sup>-1</sup>, which was basically consistent with
the theoretical adsorption capacity of 191.57 mg·g<sup>-1</sup>, far higher than
those of Mg/Al-LDHs and other phosphorus adsorbents. The results showed that the
experimental data has the best fitting result with pseudo-second-order kinetics model.
The adsorption process was consistent with Langmuir adsorption isotherm model. The
results of Zeta potential, XRD and FTIR showed that phosphorus adsorption of Mg/Al-LDO
was accomplished co-operatively by electrostatic attraction, anion in layer, ions
exchange, and surface co-ordination. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Phosphorus
Controlled terms:Adsorbents - Adsorption - Calcination - Coprecipitation - Crystal
structure - Fourier transform infrared spectroscopy - Precipitation (chemical) - X ray
diffraction - Zeta potential
Uncontrolled terms:Adsorption characteristic - Adsorption mechanism - Calcination
temperature - Coprecipitation method - Electrostatic attractions - Langmuir adsorption
isotherms - Pseudo second order kinetics - Synthesis conditions
Classification code:801 Chemistry - 801.3 Colloid Chemistry - 802.3 Chemical
Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products
Generally - 933.1.1 Crystal Lattice
Numerical data indexing:Time 7.20e+03s
DOI:10.13227/j.hjkx.201606187
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 166>
Accession number:20171003409545
Title:Simulated desorption kinetics of lead by the dominant plant roots released low
molecular weight organic acids from the water-level-fluctuating zone in the Three Gorges
Reservoir
Authors:He, Yuan-Jie (1); Liu, Jiang (1); Jiang, Tao (1, 2, 3); Huang, Jing-Jing (1);
Cheng, Qing (1); Chen, Hong (1, 2)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400715, China; (3) Department of Forest Ecology and Management,
Swedish University of Agricultural Sciences, Umeả; SE-90183, Sweden
Corresponding author:Chen, Hong(chenhong@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:600-607
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Vegetations grow vigorously in the water-level-fluctuating zone (WLFZ) of Three
Gorges Reservoir (TGR) during the non-flooded period. Low molecular weight organic acids
(LMWOAs) excreted from the roots of these plants may active the heavy metals in soil. In
order to investigate the desorption kinetics of Pb in the vegetation covered soil of TGR,
the LMWOAs released from Cynodon dactylon and Echinochloa crusgalli roots, which are the
dominant species in WLFZ, were analyzed both qualitatively and quantitatively.
Furthermore, single and mixed species of LMWOAs were also used in the simulation. The
results showed that the variety and content of LMWOAs secreted from Cynodon dactylon
roots were larger and higher than those of Echinochloa crusgalli. Citric acid, malonic
acid, acetic acid and malic acid were the same LMWOAs released from the two types of
plants. The contents of acetic acid were the highest among all LMWOAs, which were 0.765
and 0.261 mmol·kg<sup>-1</sup>in Cynodon dactylon and Echinochloa crusgalli roots,
respectively.Citric acid, malonic acid and acetic acid were the same LMWOAs detected from
their rhizosphere soils. In the citric acid, malonic acid and acetic acid desorption
test, the desorption captivities of Pb were inhibited when the concentration of LMWOAs
was lower than 1 mmol·L<sup>-1</sup>. The desorption ability displayed a
decreasing order of malonic acid>citric acid>acetic acid. However, the three LMWOAs
promoted the desorption of Pb in soil when their concentrations were higher than 1
mmol·L<sup>-1</sup>, respectively. The desorption ability displayed a decreasing
order of citric acid>malonic acid>acetic acid. During the entire process of
desorption, 0-240 min was the fast reaction stage, and the remaining time was the slow
reaction stage. The pseudo-second order kinetics equation could fit best for the kinetic
process. © 2017, Science Press. All right reserved.
Number of references:39
Main heading:Soil pollution
Controlled terms:Acetic acid - Carboxylic acids - Citric acid - Desorption - Enzyme
kinetics - Heavy metals - Kinetics - Lead - Molecular weight - Organic acids - pH -
Reservoirs (water) - Soils - Vegetation - Water levels
Uncontrolled terms:Desorption kinetics - Dominant plants - Echinochloa crusgalli - Heavy
metals in soil - Low molecular weight organic acid - Pseudo second order kinetics -
Simulated desorption - Three gorges reservoir
Classification code:441.2 Reservoirs - 483.1 Soils and Soil Mechanics - 531 Metallurgy
and Metallography - 546.1 Lead and Alloys - 801.1 Chemistry, General - 802.3 Chemical
Operations - 804.1 Organic Compounds - 931 Classical Physics; Quantum Theory;
Relativity - 931.3 Atomic and Molecular Physics
Numerical data indexing:Molar_Concentration 1.00e+00mol/m3, Time 0.00e+00s to 1.44e+04s
DOI:10.13227/j.hjkx.201607167
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 167>
Accession number:20171003409546
Title:Experimental research of Hg<sup>2+</sup>removal by TiO<inf>2</inf>/bentonite
composite
Authors:Tang, Xing-Ping (1); Zhou, Xiong (1); Zhang, Jin-Yang (2); Zhang, Cheng (1, 3);
Wang, Ding-Yong (1, 3)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) College of Chemistry and Chemical Engineering, Neijiang
Normal University, Neijiang; 641112, China; (3) Chongqing Key Laboratory of Agricultural
Resources and Environment, Chongqing; 400716, China
Corresponding author:Wang, Ding-Yong(dywang@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:608-615
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The TiO<inf>2</inf>/bentonite composite was synthesized by modifying calcium-
based bentonite with Nano-TiO<inf>2</inf>. The products before and after modification
were characterized via the approach of X-ray power diffraction(XRD) and scanning electron
microscope(SEM).The effect of TiO<inf>2</inf>/bentonite composite on mercury removal from
aqueous solutions of HgCl<inf>2</inf>was studied at different dosage, pH, adsorption time
and the initial concentration of Hg<sup>2+</sup>was investigated and compared with the
bentonite by indoor simulation experiment, as well as the orthogonal experiments to
determine the optimal condition of Hg<sup>2+</sup>adsorption. The experimental results
showed: after modified by TiO<inf>2</inf>, TiO<inf>2</inf>/bentonite composite particles
were apparently smaller, the basal spacing was increased and with a loose and porous
structure. The adsorption rates of TiO<inf>2</inf>/bentonite composite on
Hg<sup>2+</sup>were increased compared with bentonite. The Hg<sup>2+</sup>adsorption
rates were increased with the increasing dosages, pH and adsorption time. The adsorption
rates were higher than 98.0% when the dosage was 1.5 g·L<sup>-1</sup>, pH 7.0, and
the adsorption time was 120 min. The adsorption rates became smaller with increasing
initial concentration of Hg<sup>2+</sup>. False secondary dynamic equation could describe
the adsorption of TiO<inf>2</inf>/bentonite composite on Hg<sup>2+</sup>, and the
chemical adsorption was dominant. The adsorption isotherm of Hg<sup>2+</sup>conformed to
Langmuir equation, indicating that the adsorption of Hg<sup>2+</sup>was typical monolayer
adsorption. The optimal experimental condition was: dosage of 2.0 g·L<sup>-
1</sup>, pH 8.0, adsorption time of 16 h and the initial Hg<sup>2+</sup>concentration of
45 mg·L<sup>-1</sup>. Under this condition, the adsorption rate was 99.9%, and the
equilibrium concentration of Hg<sup>2+</sup>was 0.034 mg·L<sup>-1</sup>. ©
2017, Science Press. All right reserved.
Number of references:27
Main heading:Adsorption
Controlled terms:Bentonite - Mercury (metal) - Scanning electron microscopy - Solutions -
Titanium dioxide
Uncontrolled terms:Adsorption characteristic - Equilibrium concentration - Experimental
research - Initial concentration - Modification - Optimal conditions - Optimal
experimental conditions - Orthogonal experiment
Classification code:482.2 Minerals - 549.3 Nonferrous Metals and Alloys excluding
Alkali and Alkaline Earth Metals - 802.3 Chemical Operations - 804.2 Inorganic
Compounds
Numerical data indexing:Mass_Density 1.50e+00kg/m3, Mass_Density 2.00e+00kg/m3,
Mass_Density 3.40e-05kg/m3, Mass_Density 4.50e-02kg/m3, Percentage 9.80e+01%, Percentage
9.99e+01%, Time 5.76e+04s, Time 7.20e+03s
DOI:10.13227/j.hjkx.201607164
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 168>
Accession number:20171003409565
Title:Characteristic of abundances and diversity of carbon dioxide fixation microbes in
paddy soils
Authors:Liu, Qiong (1, 2); Wei, Xiao-Meng (1); Wu, Xiao-Hong (1, 3); Yuan, Hong-Zhao (1,
4); Wang, Jiu-Rong (1, 4); Li, Yu-Yuan (1); Ge, Ti-Da (1); Wu, Jin-Shui (1)
Author affiliation:(1) Key Laboratory of Agro-Ecological Processes in Subtropical Region,
Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha; 410125,
China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Faculty
of Life Science and Technology, Central-South University of Forestry and Technology,
Changsha; 410004, China; (4) The Public Service Technology Center, Institute of
Subtropical Agriculture, Chinese Academy of Sciences, Changsha; 410125, China
Corresponding author:Yuan, Hong-Zhao(yuanhongzhao@isa.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:760-768
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To get a better understanding of the microbial autotrophic carbon sequestration
potential of paddy fields and its mechanisms, soil incubation experiment was conducted
for four representative paddy soils. The molecular biological methods [quantitative PCR
(qPCR), clone library and terminal-restriction fragment length polymorphism (T-RFLP)
technique] based on cbbL and cbbM genes encoding the key enzymes [ribulose-1, 5-
bisphosphate carboxylase/oxygenase (RubisCO)] of Calvin cycle were used to determine the
abundance and diversity of autotrophic microbes. The results showed that, after 45 days
of incubation, carbon dioxide fixation autotrophic microbial abundances were generally
increased compared with those before incubation, and cbbL gene abundances were
approximately three magnitudes higher than those of cbbM. Dominant microbial populations
varied among the four paddy soils, and most of these OTUs were distantly related to known
sequences, only part of them could be grouped into Proteobacteria and Actinobacteria. RDA
analysis results showed that soil organic carbon (SOC), cation exchange capacity (CEC),
pH, clay, silk and sand content had significant effects on the CO<inf>2</inf>fixation
microbial community. Consequently, the results of this study provide significant
reference to understand the role of microorganisms in carbon cycle process. The results
are helpful for providing a scientific basis for scientific management of paddy soil
fertility and low carbon agriculture construction. © 2017, Science Press. All right
reserved.
Number of references:28
Main heading:Organic carbon
Controlled terms:Bacteria - Carbon dioxide - Genes - Microorganisms - Plants (botany) -
Polymerase chain reaction - Soils
Uncontrolled terms:Carbon dioxide fixation - CbbL - CbbM - Community structures - Paddy
soils
Classification code:461.2 Biological Materials and Tissue Engineering - 461.9 Biology -
483.1 Soils and Soil Mechanics - 801.2 Biochemistry - 804.1 Organic Compounds - 804.2
Inorganic Compounds
Numerical data indexing:Age 1.23e-01yr
DOI:10.13227/j.hjkx.201607143
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 169>
Accession number:20171003416397
Title:Response characteristics of algal chlorophyll-a to nitrogen, phosphorus and water
temperature in lake erhai based on quantile regression
Authors:Chen, Xiao-Hua (1); Li, Xiao-Ping (2); Qian, Xiao-Yong (1); Hu, Shuang-Qing (1)
Author affiliation:(1) Shanghai Academy of Environmental Science, Shanghai; 200233,
China; (2) State Key Laboratory of Estuarine and Coastal Research, East China Normal
University, Shanghai; 200062, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:113-120
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on water quality monitoring data of Lake Erhai from 1990 to 2013, the
yearly and seasonally response characteristics of algal chlorophyll-a to total nitrogen
(TN), total phosphorus (TP) and water temperature was investigated using quantile
regression method. It indicated that water temperature was always the primary limiting
factor of algal biomass indicated by chlorophyll a (Chl-a) across recent 24 years, but
its limiting effect on algal Chl-a content was kept descending sharply and replaced much
by nutrients (e.g. P, N) with the increasing eutrophic level. Especially the slope values
of TP on Chl-a were kept ascending from -0.3 to 0.8. Since 2002, the positive effect of
TN on Chl-a presented slow descending tendency, and P became the most important limiting
nutrient factor of algal growth. According to the seasonal variation analysis, water
temperature and N had dominant effects on algal Chl-a in spring and autumn, but they were
replaced by P in the case of Chl-a>8 mg·m<sup>-3</sup>in spring. In summer, N
and P had strong interactive impacts on the algal growth, and the positive effect of P
was stronger than that of N in the case of Chl-a>3 mg·m<sup>-3</sup>. In
winter, algal biomass was co-limited by temperature and P. It suggested that P reduction
is the prior choice of eutrophication control of Lake Erhai, and simultaneously reducing
N load is necessary in the background of global warming. In addition,so far a emergency
controlling measure should be taken to monitor algal blooming due to sharp ascending of
water temperature within a few days in spring and autumn. © 2017, Science Press. All
right reserved.
Number of references:32
Main heading:Temperature
Controlled terms:Chlorophyll - Ecology - Eutrophication - Global warming - Lakes -
Nitrogen - Nutrients - Phosphorus - Regression analysis - Water quality
Uncontrolled terms:Chlorophyll a - Eutrophication control - Limiting effects - Quantile
regression - Response characteristic - Seasonal variation - Water quality monitoring -
Water temperatures
Classification code:443.1 Atmospheric Properties - 445.2 Water Analysis - 454.3
Ecology and Ecosystems - 641.1 Thermodynamics - 804 Chemical Products Generally - 804.1
Organic Compounds - 922.2 Mathematical Statistics
Numerical data indexing:Age 2.40e+01yr
DOI:10.13227/j.hjkx.201607041
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 170>
Accession number:20171003409551
Title:Nitrogen removal effect and conversion characteristics of nitrous oxide in single-
stage and multi-stage A/O processes
Authors:Guo, Chang-Zi (1); Zhang, Feng-Yan (1); Liu, Fu-Yu (1); Zhu, Chao (1); Pei, Li-
Ying (1)
Author affiliation:(1) School of Environmental Science and Engineering, Shaanxi
University of Science and Technology, Xi'an; 710021, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:647-653
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The single-stage A/O and multi-stage A/O processes were simulated by sequencing
batch reactors (SBRs) with alternate stirring and aeration. The removal efficiency of
nitrogen and the release mechanism of N<inf>2</inf>O were studied under the identical
conditions of influent quality, hydraulic retention time (HRT), sludge retention time
(SRT), temperature and anoxic/oxic (A/O) retention time ratio. Experimental results
showed that COD or ammonia-nitrogen removal had no significant difference between the
single-stage and the multi-stage A/O processes for the influent quality equivalent to
municipal wastewater. However, TN removal efficiency of the former was better than the
later with 72.1% and 52.2%, respectively. In the conversion of total nitrogen, during the
typical cycle in the single-stage A/O and multi-stage A/O processes, the yields of
N<inf>2</inf>O were 16.95 mg and 3.95 mg, respectively. The conversion rate, which is the
ratio of N<inf>2</inf>O yield and TN removal, was respectively 11.47% and 4.11%.
N<inf>2</inf>O production and emission occurred mainly in aerobic (nitrification) phase
while there was little N<inf>2</inf>O emission in anoxic (denitrification) phase.
Although the dominant species of AOB was both Nitrosomonas in the single-stage A/O and
the multi-stage A/O processes under the same operating conditions, it was more conducive
to the growth of nitrifying bacteria (AOB, NOB) in the single-stage A/O process with the
greater abundance of Nitrosomonas. Meanwhile, the type and abundance of NOB in the
single-stage A/O process were significantly more than in the multi-stage A/O process too.
Therefore, it is more competitive to deal with the high-strengthening ammonia-nitrogen
wastewater in the single-stage A/O process. In the actual operation of wastewater
treatment, using appropriate partitions of A/O or oxygen-supplying modes can not only
result in better nitrogen removal but also decrease the secondary pollution caused by
N<inf>2</inf>O to the atmosphere. © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Nitrogen removal
Controlled terms:Activated sludge process - Ammonia - Bacteria - Batch reactors -
Efficiency - Nitrification - Nitrogen - Nitrogen oxides - Wastewater treatment
Uncontrolled terms:Ammonia nitrogen wastewaters - Conversion characteristics - Hydraulic
retention time - Multi stage - Nitrosomonas - Nitrous oxide - Sequencing batch reactors -
Single stage
Classification code:452.2 Sewage Treatment - 452.4 Industrial Wastes Treatment and
Disposal - 802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions - 804
Chemical Products Generally - 804.2 Inorganic Compounds - 913.1 Production Engineering
Numerical data indexing:Mass 1.69e-05kg, Mass 3.95e-06kg, Percentage 1.15e+01%,
Percentage 4.11e+00%, Percentage 5.22e+01%, Percentage 7.21e+01%
DOI:10.13227/j.hjkx.201603152
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 171>
Accession number:20171003409529
Title:Inventory and environmental impact of VOCs emission from anthropogenic source in
Chang-Zhu-Tan region
Authors:You, Xiang-Yu (1); Luo, Da-Tong (1); Liu, Zhan (1); Su, Yan-Rong (1)
Author affiliation:(1) Hunan Research Academy of Environmental Protection, Changsha;
410004, China
Corresponding author:Su, Yan-Rong(89426781@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:461-468
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on environmental statistical data and emission factor, an anthropogenic
volatile organic compounds (VOCs) emission inventory was established for the Chang-Zhu-
Tan region, and a grid with spatial resolution of 3 km×3 km was built according to
the spatial feature data. Ozone formation potential (OFP) and secondary organic aerosol
(SOA) formation potential of anthropogenic sources were also estimated. The results
showed that the total anthropogenic VOCs emission was about 113.49 kt in Chang-Zhu-Tan
region and the main sources were industrial processes, solvent utilization and vehicles
with the VOCs emission of 35.88 kt, 28.72 kt and 22.13 kt, respectively. Paving pitch and
architecture wall painting accounted for the majority of the solvent utilization and the
building materials industry accounted for 75.34% of VOCs emission from the industrial
processes. Liling was the largest contributor compared to the other cities in Chang-Zhu-
Tan region, where the VOCs emission from these anthropogenic sources in 2014 was 16.58
kt. The total OFP of these sources was 375.33 kt, in which solvent utilization
contributed 27.28% and the O<inf>3</inf>generative capacity of biomass burning was the
largest. Solvent utilization contributed 35.35% to the total SOA formation potentials and
its SOA generative capacity was also the largest. The spatial distribution
characteristics revealed that the VOCs emission mostly originated from urban area. ©
2017, Science Press. All right reserved.
Number of references:27
Main heading:Industrial emissions
Controlled terms:Aerosols - Construction industry - Environmental impact - Organic
compounds - Ozone - Solvents - Volatile organic compounds
Uncontrolled terms:Anthropogenic sources - Building materials industry - Chang-Zhu-Tan
region - Distribution characteristics - Emission inventories - Formation potential -
Ozone formation potentials - Secondary organic aerosols
Classification code:405 Construction Equipment and Methods; Surveying - 451.1 Air
Pollution Sources - 454.2 Environmental Impact and Protection - 803 Chemical Agents and
Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds
Numerical data indexing:Percentage 2.73e+01%, Percentage 7.53e+01%
DOI:10.13227/j.hjkx.201607185
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 172>
Accession number:20172603860785
Title:Performance Improvement of Microbial Fuel Cell with Polyaniline Dopped Graphene
Anode
Authors:Huang, Li-Hua (1, 2); Li, Xiu-Fen (1); Ren, Yue-Ping (1); Wang, Xin-Hua (1)
Author affiliation:(1) Laboratory of Environmental Biotechnology, School of Environmental
and Civil Engineering, Jiangnan University, Wuxi; 214122, China; (2) School of Life
Science, Linyi University, Linyi; 276005, China
Corresponding author:Li, Xiu-Fen(xfli@jiangnan.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1717-1725
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Microbial fuel cell (MFC) technology has potential in recovering bioelectricity
from different types of waste, which attracts more and more attention in the field of
environment and energy. However, low power density, high cost and low substrate
degradation rate, closely associated with anode performance, limit its practical
application. In this study, proportional polyaniline (PANI) together with graphene was
chosen to obtain the PANI dopped graphene composite. The as-received composite was
modified onto the surface of glassy carbon electrode. The results of electrochemical
analysis showed that the optimal mass ratio of graphene was 20% for cyclic voltammetry
(CV) and linear sweep voltammetry (LSV) analysis. The anodes with 5% graphene produced a
peak power density of (831±45) mW·m<sup>-2</sup>, which was 1.2, 1.3, 1.3,
1.5, 1.8 times of those with 20% graphene, 1% graphene, graphene, PANI and carbon cloth,
respectively. Moreover, 5% graphene reactors showed the maximum values in output voltage,
open-circuit voltage (OCV), chemical oxygen demand (COD) removal rate, coulombic
efficiency (CE), and biomass density. The polarization resistance was only (24±2)
Ω in 5% graphene reactors, which was 19.8% of that of carbon cloth. The results of
electrochemical analysis were not consistent with those of bioelectrochemical analysis,
demonstrating that the biocompatibility of electrode was one of the important factors
affecting MFC performance. 5% graphene anode showed full advantages of graphene and PANI,
which improved the performance of MFC. © 2017, Science Press. All right reserved.
Number of references:41
Main heading:Microbial fuel cells
Controlled terms:Anodes - Biocompatibility - Chemical analysis - Chemical oxygen demand -
Cyclic voltammetry - Degradation - Electrochemical electrodes - Electrochemistry -
Electrodes - Electrophysiology - Fuel cells - Glass membrane electrodes - Graphene -
Open circuit voltage - Polyaniline
Uncontrolled terms:Anode modification - Chemical oxygen demand removals - Electrogenesis
- Environment and energies - Glassy carbon electrodes - Linear sweep voltammetry -
Polarization resistances - Polyanilines (PAni)
Classification code:461.1 Biomedical Engineering - 461.9.1 Immunology - 702.2 Fuel
Cells - 704.1 Electric Components - 708.2 Conducting Materials - 714.1 Electron Tubes
- 761 Nanotechnology - 801.4.1 Electrochemistry - 802.2 Chemical Reactions - 804
Chemical Products Generally
Numerical data indexing:Percentage 1.00e+00%, Percentage 1.98e+01%, Percentage 2.00e+01%,
Percentage 5.00e+00%
DOI:10.13227/j.hjkx.201609062
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 173>
Accession number:20172603860982
Title:Modification of Diatomite by Zirconium and Its Performance in Phosphate Removal
from Water
Authors:Fan, Yi (1); Wang, Zhe (1); Zhao, Lian-Qin (1); Wu, De-Yi (1)
Author affiliation:(1) School of Environmental Science & Engineering, Shanghai Jiao
Tong University, Shanghai; 200240, China
Corresponding author:Wu, De-Yi(dywu@sjtu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1490-1496
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Zirconium modified diatomite was obtained by modifying raw diatomite with
zirconium and the mass fraction of zirconia was 12.39% in the obtained material, which
was proved to be amorphous via XRD. SEM images showed that porous floccules covered the
surface of diatomite after modification and the specific surface area of the zirconium
modified diatomite was 75.22 m<sup>2</sup>·g<sup>-1</sup>, larger than that of raw
diatomite (14.00 m<sup>2</sup>·g<sup>-1</sup>). XPS spectra indicated that
zirconia and diatomite were bonded together through chemical linkage, rather than
physical deposition. The adsorption isotherm of phosphate by zirconium modified diatomite
was fitted better to the Langmuir model with a calculated maximum adsorption capacity
reaching 10.56 mg·g<sup>-1</sup>. The adsorption amount of zirconium oxide
component in the material was estimated to be 81.67 mg·g<sup>-
1</sup>ZrO<inf>2</inf>, which was higher than that of pure zirconium oxides reported in
previous studies. The adsorption amount of phosphate by zirconium modified diatomite
decreased with the increase of pH. The adsorption was proved to be a ligand exchange
process, supported by the XPS spectra of Zr3d region before and after adsorption.
Chloride ion, sulfate ion and nitrate ion did not inhibit the adsorption of phosphate on
the material, whereas coexistence of bicarbonate ions competed with phosphate ions to a
certain extent. When treating eutrophic lake water with a phosphate concentration of 2
mg·L<sup>-1</sup>, the phosphate concentration level could meet the Ⅲ rank
of Surface Water Environment Quality Standard of China by adopting the dosage of
zirconium modified diatomite ≥ 1.25 g·L<sup>-1</sup>. © 2017, Science
Press. All right reserved.
Number of references:32
Main heading:Adsorption
Controlled terms:Ions - Oxides - Phosphates - Water treatment - X ray photoelectron
spectroscopy - Zirconia - Zirconium
Uncontrolled terms:Adsorption amounts - Adsorption capacities - Chemical linkage -
Diatomite - Ligand exchanges - Phosphate concentration - Phosphate removal - Water
environments
Classification code:445.1 Water Treatment Techniques - 549.3 Nonferrous Metals and
Alloys excluding Alkali and Alkaline Earth Metals - 802.3 Chemical Operations - 804
Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 1.25e+00kg/m3, Mass_Density 2.00e-03kg/m3,
Percentage 1.24e+01%, Specific_Surface_Area 1.40e+04m2/kg, Specific_Surface_Area 7.52e
+04m2/kg
DOI:10.13227/j.hjkx.201609132
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 174>
Accession number:20172603860965
Title:Emission Characteristics of Vehicle Exhaust in Artery and Collector Roads in
Nanjing Based on Real-time Traffic Data
Authors:Li, Xiao-Yu (1); Wu, Lin (1); Zou, Chao (1); Zhang, Yi (1); Mao, Hong-Jun (1);
Jing, Bo-Yu (2)
Author affiliation:(1) College of Environmental Science and Engineering, Nankai
University, Tianjin; 300071, China; (2) State Environmental Protection Key Laboratory of
Odor Pollution Control, Tianjin; 300191, China
Corresponding author:Mao, Hong-Jun(hongjunm@nankai.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:4
Issue date:April 15, 2017
Publication year:2017
Pages:1340-1347
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The vehicle emissions were estimated by the Urban High Temporal-Spatial
Resolution Vehicle Emission Inventory Model and Decision Support System (hereinafter
referred to as the HTSVE system) with the real-time data including traffic flow, average
speed and fleet compositions obtained from Radio Frequency Identification (RFID) and
emission factors based on COPERT. The study focused on the characteristics of vehicle
emissions by means of non-parametric test and cluster analysis with ArcGIS in artery
roads and collector roads in Nanjing, 2014. The result showed that the proportion of
passenger cars reached up to 80%, and China 3 and China 4 accounted for over 90% while
China 3 contributed most. The daily average emissions in special periods including
morning, noon and evening were affected by both road types and weekend effect. The artery
and collector roads were classified as 5 clusters. Each type had similar emission rates
distribution and was affected by spatial position to support traffic management. ©
2017, Science Press. All right reserved.
Number of references:24
Main heading:Advanced traffic management systems
Controlled terms:Artificial intelligence - Cluster analysis - Decision support systems -
Fleet operations - Radio frequency identification (RFID) - Traffic control -
Transportation - Vehicles
Uncontrolled terms:Artery and collector roads - Emission characteristics - Fleet
composition - HTSVE system - Non-parametric test - Real-time traffic datum - Spatial
resolution - Traffic management
Classification code:406.1 Highway Systems - 716.3 Radio Systems and Equipment - 723
Computer Software, Data Handling and Applications - 723.4 Artificial Intelligence
Numerical data indexing:Percentage 8.00e+01%, Percentage 9.00e+01%
DOI:10.13227/j.hjkx.201608065
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 175>
Accession number:20172703864527
Title:Release Characteristics of Mercury from Submersed Typical Herbaceous Plants in the
Water-Level Fluctuation Zone of the Three Gorges Reservoir Area
Authors:Deng, Han (1); Zhang, Xiang (1); Zhang, Cheng (1, 2, 3); Wang, Yong-Min (1);
Wang, Ding-Yong (1, 2, 3)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Engineering Research Center for Agricultural
Non-point Source Pollution Control in the Three Gorges Reservoir Area, Chongqing; 400716,
China; (3) Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing;
400716, China
Corresponding author:Wang, Ding-Yong(dywang@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:987-992
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In suit inundation experiments of three typical herbaceous plants were conducted
in field to investigate the mercury release characteristics of plants grown in the
water-level fluctuation zone of the Three Gorges Reservoir after flooding by regulating
the water level. To realize this objective, this study mainly focused on the dynamic
change of total mercury (THg) concentrations in plants after inundation, the release rate
and flux of THg from plants and its release load in this region. The results showed that
the release process of THg in plants fitted exponential curve, suggesting that mercury
release rate was quick in the initial inundation period and then flat afterwards as the
decomposing plants. The THg release amounts (followed the order of Alternanthera
philoxeroides>Polygonum lapathifolium>Cynodon dactylon) were probably influenced by
initial C/N ratio and THg concentrations of plants. The decrement of THg concentrations
in per unit mass of plants residue was found to be generally proportional to their
initial C/N ratio, while the THg release amounts were generally proportional to the
initial THg concentrations of plants. The total release loads of three plants
(Alternanthera philoxeroides, Polygonum lapathifolium, Cynodon dactylon) were estimated
to be 167.31, 78.13 and 88.33 mg·hm<sup>-2</sup>, respectively, according to their
weight distribution and biomass in the water-level fluctuation zone of the Three Gorges
Reservoir Area. © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Plants (botany)
Controlled terms:Floods - Mercury (metal) - Reservoirs (water) - Water levels
Uncontrolled terms:Alternanthera philoxeroides - Herbaceous plants - Inundation - Release
characteristics - Three gorges reservoir - Three gorges reservoir area - Water-level-
fluctuation zones - Weight distributions
Classification code:441.2 Reservoirs - 549.3 Nonferrous Metals and Alloys excluding
Alkali and Alkaline Earth Metals
DOI:10.13227/j.hjkx.201608187
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 176>
Accession number:20172703864517
Title:Analysis of Chemical Composition and Pollution Source of the Fine Particulate
Matter by the SPAMS in the Four Seasons in Nanning
Authors:Liu, Hui-Lin (1); Chen, Zhi-Ming (1); Mao, Jing-Ying (1); Liang, Gui-Yun (1);
Huang, Jiong-Li (1); Li, Hong-Jiao (1); Yang, Jun-Chao (1); Mo, Zhao-Yu (1, 2)
Author affiliation:(1) Scientific Research Academy of Guangxi Environmental Protection,
Nanning; 530022, China; (2) Deparment of Environmental Science and Engineering, Fudan
University, Shanghai; 200433, China
Corresponding author:Mo, Zhao-Yu(65678503@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:894-902
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To study the chemical composition and pollution sources of the fine particulate
matter during the four seasons in Nanning, single particle aerosol mass spectrometry was
performed to characterize the fine particulate matter in Nanning during the four seasons.
The correlation (R<sup>2</sup>) between the fine particulate matter number concentration
and the mass concentration of the fine particulate matter obtained using SPAMS was all
above 0.75 in the observation period. The particle number concentration could reflect the
atmospheric pollution situation to some degree. The average mass spectrogram of the fine
particulate matter reflected that secondary pollutants were more in winter and spring in
Nanning. The Art-2a classification method was used to classify the chemical composition
of the fine particulate matter. The results showed that the number concentration of the
chemical composition and sources of pollution had differences in the four seasons.
Chemical composition could reflect pollution sources. The elevated elemental carbon was
positively with increasing coal combustion in winter. The elevated organic carbon was
positively correlated with motor vehicle source in autumn. Rich potassium particles,
levoglucosan and substance were positively correlated with biomass burning source and
dust in summer. The rich sodium particles and heavy metals were higher in spring. During
the process of increasing pollution, the contributions of biomass and coal combustion
sources were large. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Air pollution
Controlled terms:Aerosols - Chemical analysis - Coal combustion - Heavy metals - Mass
spectrometry - Organic carbon - Particles (particulate matter) - Pollution
Uncontrolled terms:Aerosol mass spectrometers - Chemical component - Fine particulate
matter - Pollution sources - The four seasons
Classification code:451 Air Pollution - 521 Fuel Combustion and Flame Research - 524
Solid Fuels - 531 Metallurgy and Metallography - 801 Chemistry - 804.1 Organic
Compounds - 951 Materials Science
DOI:10.13227/j.hjkx.201602009
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 177>
Accession number:20172703864532
Title:Efficiency and Mechanism of Purifying High Iron-Manganese from Ground Water in the
Cold Villages and Towns Based on The Coupling of Rice Husk and Iron-Manganese Oxidizing
Bacteria
Authors:Sun, Nan (1); Chen, Yan-Li (1); Zhang, Ying (2); Lu, Yan (2); Song, Qiu-Xia (2);
Li, Chun-Yan (2); Jiang, Zhao (2)
Author affiliation:(1) College of Water Conservancy & Civil Engineering, Northeast
Agricultural University, Harbin; 150030, China; (2) College of Resources and Environment,
Northeast Agricultural University, Harbin; 150030, China
Corresponding author:Zhang, Ying(zhangyinghr@hotmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1028-1037
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Aiming at the special geo-climatic conditions and typical problems constraining
the development of villages and towns, making villages and towns have the following
characteristics: green and low-carbon, energy saving and environmental friendly, the
coupling process of adsorption by carbonized rice husk particles and biological oxidation
using Bacillus megaterium bacteria was developed for purifying high iron-manganese from
groundwater in the cold villages and towns. The quick start-up method of biological
filter at low temperature was studied. Based on the contact oxidation and biological
method, iron removal efficiency and reaction rate in different filtration layers under
different filtration conditions were comparatively analyzed, and iron removal mechanism
of biological filter was determined. Filter materials and the solid samples in backwash
water at different stages were characterized and the manganese removal mechanism of
biological filter was analyzed through SEM, FTIR, XPS, Raman spectra and EPR. The results
showed that the active biological membrane reached mature and stable only after 15 d with
the operation mode of bacteria liquid cycle and low filtration rate in the filter column.
The effluent concentration met the requirements of drinking water quality (GB 5749-2006)
in the stable operation process. Fe, Mn and bacteria were lower than 0.3
mg·L<sup>-1</sup>, 0.1 mg·L<sup>-1</sup>, 100 CFU·mL<sup>-1</sup>,
respectively. Iron removal mechanism relied mainly on the physical and chemical effects,
supplemented by biological function. During the biofilm culturing stage and initial
stable operation stage of filter column, manganese removal relied mainly on the
biological effect. The physical chemistry was preferred at later stable operation stage.
The study provides technical support for the applications of treating collectively
Fe<sup>2+</sup>and Mn<sup>2+</sup>in groundwater. © 2017, Science Press. All right
reserved.
Number of references:21
Main heading:Chemicals removal (water treatment)
Controlled terms:Bacteria - Bacteriology - Biological materials - Biological membranes -
Carbon - Cytology - Effluents - Electron spin resonance spectroscopy - Filters (for
fluids) - Filtration - Fourier transform infrared spectroscopy - Groundwater - Iron -
Manganese - Mechanisms - Microfiltration - Passive filters - Physical chemistry - Potable
water - Rural areas - Temperature - Water - Water quality
Uncontrolled terms:Bacillus megaterium - Biological oxidations - Carbonized rice husks -
Effluent concentrations - Environmental-friendly - Low temperatures - Manganese oxidizing
bacteria - Rice husk
Classification code:444 Water Resources - 444.2 Groundwater - 445.2 Water Analysis -
452.3 Industrial Wastes - 461.2 Biological Materials and Tissue Engineering - 543.2
Manganese and Alloys - 545.1 Iron - 601.3 Mechanisms - 641.1 Thermodynamics - 703.2
Electric Filters - 801 Chemistry - 801.4 Physical Chemistry - 802.3 Chemical
Operations - 804 Chemical Products Generally
Numerical data indexing:Mass_Density 1.00e-04kg/m3, Mass_Density 3.00e-04kg/m3
DOI:10.13227/j.hjkx.201608154
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 178>
Accession number:20172703864561
Title:Characterization of Phosphorus Forms in Organic Composts and Their Effects on Leaf
Phosphorus Content of Castanea mollissima in Chinese Chestnut Producing Area
Authors:Song, Ying (1); Guo, Su-Juan (1); Zhang, Li (1); Sun, Hui-Jun (1); Xie, Ming-Ming
(1); Wu, Yan-Qi (1); Wang, Jing (1)
Author affiliation:(1) Key Laboratory for Silviculture and Conservation, College of
Forestry, Beijing Forestry University, Beijing; 100083, China
Corresponding author:Guo, Su-Juan(gwangzs@263.net)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1262-1271
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Characterization of the forms of phosphorus (P) in four organic composts
including compost of hulls and leaves of Castanea mollissima, edible fungi residues, corn
stalks and chicken manure (BYZ), compost of edible fungi residues and chicken manure
(ZF), composts of hulls and leaves of C. mollissima, edible fungi residues and chicken
manure (BZ1 and BZ2) in Chinese chestnut producing area was conducted by sequential P
fractionation developed by Dou et al. Field trial was conducted to study the effects of
compost application on leaf phosphorus content of Castanea mollissima. The results showed
that total phosphorus content (TP) of organic composts ranked as follows: BZ1 (10.61
g·kg<sup>-1</sup>)>ZF (9.03 g·kg<sup>-1</sup>)>BYZ (8.56
g·kg<sup>-1</sup>)>BZ2 (7.68 g·kg<sup>-1</sup>), and the inorganic
phosphorus (P<inf>i</inf>) accounted for 62.88%-73.62% of the total phosphorus in the
organic composts. The content and proportion of HCl-P in the total fractionated
phosphorus (P<inf>rt</inf>) was the highest among P forms in ZF, while that of
H<inf>2</inf>O-P was the highest in BYZ, BZ1 and BZ2.The content of NaOH-P was very low
in all the composts. Active H<inf>2</inf>O-Por NaHCO<inf>3</inf>-P had the highest
inorganic phosphorus proportion (89.17%-96.00%) of all the P forms. The major
P<inf>i</inf>forms in BZ2 were H<inf>2</inf>O-and HCl-extractable P fractions, while
H<inf>2</inf>O-P<inf>i</inf>, HCl-P<inf>i</inf>and NaHCO<inf>3</inf>-P<inf>i</inf>were
major P<inf>i</inf>forms in BYZ, BZ1 and ZF. Residual-P was the predominant organic
phosphorus form, and BZ2 showed the highest Residual-P proportion of the total
fractionated phosphorus (P<inf>rt</inf>) among all the composts. Leaf phosphorus contents
per unit area of Castanea mollissima by field trial on the added phosphorus-equivalent
basis were expressed as: BZ2>BZ1>BYZ>ZF>CK. Increment of leaf phosphorus
content per unit area in Julyand per month on average showed positive relationship with
the content and proportion of H<inf>2</inf>O-P<inf>i</inf>in the total fractionated
phosphorus of composts, which presumably played a key role in leaf phosphorus absorption
of C. mollissima measured in the year of deep concentrated fertilization. The results
suggested that composts of hulls and leaves of C. mollissima, edible fungi residues and
chicken manure (BZ2) was a good choice in given area for aerobic composting raw material
system in which organic wastes from Chinese chestnut industry accounted for 80% (hulls
and leaves of Castanea mollissima and edible fungi residues accounted for 60% and 20%
respectively), which had a high proportion of H<inf>2</inf>O-P<inf>i</inf>and organic
Residual-P pool and led to the highest leaf phosphorus content of C. mollissima. ©
2017, Science Press. All right reserved.
Number of references:38
Main heading:Phosphorus
Controlled terms:Animals - Composting - Fertilizers - Fruits - Fungi - Manures
Uncontrolled terms:Castanea mollissima - Compost applications - Edible fungi residues -
Inorganic phosphorus - Leaf phosphorus - Organic phosphorus - Phosphorus form - Producing
areas
Classification code:804 Chemical Products Generally - 821.4 Agricultural Products -
821.5 Agricultural Wastes
Numerical data indexing:Percentage 2.00e+01%, Percentage 6.00e+01%, Percentage 6.29e+01%
to 7.36e+01%, Percentage 8.00e+01%, Percentage 8.92e+01% to 9.60e+01%
DOI:10.13227/j.hjkx.201608088
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 179>
Accession number:20172703864518
Title:Physico-chemical Characteristics of Individual Aerosol Particles in Marine
Atmosphere on South Hemisphere
Authors:Chi, Jian-Wei (1); Li, Chuan-Jin (2); Sun, Jun-Ying (3); Zhang, Jian (1); Wang,
Hui (1); Wang, Han-Tao (1); Li, Wei-Jun (1)
Author affiliation:(1) Environment Research Institute, Shandong University, Ji'nan;
250100, China; (2) Gold and Arid Regions Environmental and Engineering Research
Institute, Chinese Academy of Sciences, Lanzhou; 730000, China; (3) Key Laboratory of
Atmospheric Chemistry, Institute of Atmospheric Composition, Chinese Academy of
Meteorological Sciences, Beijing; 100081, China
Corresponding author:Li, Wei-Jun(liweijun@sdu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:903-910
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:During the 29th Chinese National Antarctic Research Expedition (CHIANRE),
individual particle samples were collected from South China to Antarctic during November
2012 to April 2013. A transmission electron microscopy with energy-dispersive X-ray
spectrometry (TEM-EDS) was employed to analyze the morphology, mixing state, composition,
and relative abundances of individual aerosol particles. Atmospheric particles were
classified into four types: sea salt, mineral, S-rich and C-rich. Sea salt aerosols (SSA)
were dominant in the marine particles from South China to Antarctic, and they were
further divided into three sub-types: fresh SSA, partially aged SSA, and fully aged SSA.
Partially and fully aged SSA accounted for 86% of total SSA number. Interestingly,
surface of partially aged SSA and fully aged SSA contained abundant rod-like
Na<inf>2</inf>SO<inf>4</inf>. Mineral dust particles increased in the coastal areas which
were influenced by continental air. In addition, we found that S-rich particles were
abundant at two sampling sites (the middle eastern of Indian Ocean and Antarctic inland).
The back trajectories of air masses indicated that these S-rich particles were mainly
formed via the oxidation of dimethyl sulfide (DMS) emitted from the marine
phytoplanktons. Our study suggests that the SSA aging process in the South Hemisphere
atmosphere was controlled by the DMS which is different from the SSA aging under the
influence of anthropogenic pollutants in the North Hemisphere. © 2017, Science
Press. All right reserved.
Number of references:27
Main heading:Aerosols
Controlled terms:Electron microscopy - High resolution transmission electron microscopy -
Mixing - Phytoplankton - Transmission electron microscopy
Uncontrolled terms:Antarctic - Anthropogenic pollutants - Energy dispersive X-ray
spectrometry - Individual particle analysis - Mineral dust particles - Mixing state -
Physicochemical characteristics - Sea salt aerosol
Classification code:471 Marine Science and Oceanography - 741.3 Optical Devices and
Systems - 802.3 Chemical Operations
Numerical data indexing:Percentage 8.60e+01%
DOI:10.13227/j.hjkx.201607091
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 180>
Accession number:20172703864541
Title:Recovery Performance of ANAMMOX Process after Inhibition Resulting from Seawater
Authors:Qi, Pan-Qing (1); Yu, De-Shuang (1); Li, Jin (1); Guan, Yong-Jie (1); Wei, Si-Jia
(1)
Author affiliation:(1) School of Environmental Science and Engineering, Qingdao
University, Qingdao; 266071, China
Corresponding author:Li, Jin(ljin0532@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1102-1108
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:An anaerobic sequencing batch reactor (ASBR) was operated to investigate the
recovery performance of ANAMMOX reactor after the inhibition of 100% seawater
concentration. The results showed that the nitrogen removal performance of ANAMMOX
reactor suffered inhibition of high salinity concentration. However, it could enter a
period of stable nitrogen removal efficiency again after an interim stable period and a
recovery period. The nitrogen removal rate (NRR) could reach 0.52 kg·
(m<sup>3</sup>·d)<sup>-1</sup>, which was similar to the control group, containing
10% seawater and having a NRR of 0.462 kg·(m<sup>3</sup>·d)<sup>-1</sup>.
The modified Logistic model and modified Gompertz model were revised and their
application field was broadened. The re-modified Logistic model was suggested to be used
to simulate the NRR recovery process of ANAMMOX reactor that suffered inhibition of 100%
seawater concentration. The doubling time of NRR was calculated to be 11.359 d using the
prediction formula established for the recovery time of NRR. © 2017, Science Press.
All right reserved.
Number of references:25
Main heading:Nitrogen removal
Controlled terms:Batch reactors - Nitrogen - Recovery - Seawater - Sewage - Wastewater
treatment
Uncontrolled terms:Anaerobic sequencing batch reactors - ANAMMOX - Modified Logistic
model - Modified-Gompertz model - Nitrogen removal efficiency - Nitrogen removal rates -
Recovery kinetics - Recovery performance
Classification code:452.1 Sewage - 452.4 Industrial Wastes Treatment and Disposal -
471.4 Seawater, Tides and Waves - 802.1 Chemical Plants and Equipment - 804 Chemical
Products Generally
Numerical data indexing:Percentage 1.00e+01%, Percentage 1.00e+02%
DOI:10.13227/j.hjkx.201606169
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 181>
Accession number:20172703864555
Title:Enhanced Electrokinetic Remediation of Heavy Metals Contaminated Soils by Stainless
Steel Electrodes as well as the Phenomenon and Mechanism of Electrode Corrosion and
Crystallization
Authors:Wen, Dong-Dong (1); Fu, Rong-Bing (2); Zhang, Wei (1); Gu, Ying-Ying (3)
Author affiliation:(1) School of Resource and Environmental Engineering, East China
University of Science and Technology, Shanghai; 200237, China; (2) College of
Environmental Science and Engineering, Tongji University, Shanghai; 200092, China; (3)
College of Chemical Engineering, China University of Petroleum (East China), Qingdao;
266580, China
Corresponding author:Fu, Rong-Bing(rongermmfu@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1209-1217
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Electrode corrosion and salt crystallization are important challenges that
restrict the engineering application of electrokinetic technology. In the present study,
using stainless steel as an electrode, and deionized water (DW), citric acid (CA) and
polyaspartic acid (PASP) as electrolytes, Pb/Cu-contaminated soil was remediated by
electrokinetic. All of the EK experiments were conducted in a 2 L soil cell reactor with
a moisture level of about 35% blended with 1000 mg·g<sup>-1</sup>of Pb and 778
mg·g<sup>-1</sup>of Cu under a constant voltage gradient (1 V·cm<sup>-
1</sup>, 2 V·cm<sup>-1</sup>) for 150 h. The removal efficiency of heavy metals
and influencing factors, as well as the phenomenon and mechanism of electrode corrosion
and salt crystallization were explored. The experimental results showed under the action
of electric field, the Ca in the test soil would move to the cathode, and the crystal was
formed in the alkaline condition. Additionally, the conductivity of the electrode was
reduced. During the EK process, water at the anode was primarily oxidized, undergoing a
reduction reaction at the cathode. Because H<sup>+</sup>and OH<sup>-</sup>were
transported through the soil by electromigration and electro-osmotic flow (EOF), changes
in soil pH could occur. The concentrations distribution of Pb-Cu appeared to be related
to the distribution of soil pH in the cell, which might be associated with the desorption
and hydroxide precipitation of Pb-Cu. PASP resulted in obvious inhibitory effect on the
corrosion of stainless steel electrode, CA and PASP could clearly destroy the formation
of CaCO<inf>3</inf>crystal, while barely effectively disrupted the formation of Ca(OH)
<inf>2</inf>crystal. Both CA and PASP could promote the removal of Pb, but the influence
of PASP on the removal of Cu was not obvious, and the effect of CA was very significant.
Combined with different corrosion inhibitor and reinforcing agent, stainless steel can be
chosen as the engineering application electrode in electrokinetic remediation. ©
2017, Science Press. All right reserved.
Number of references:27
Main heading:Soil pollution
Controlled terms:Alkalinity - Binary alloys - Calcium - Cathodes - Citric acid - Copper -
Copper alloys - Corrosion - Corrosion inhibitors - Crystallization - Deionized water -
Electric fields - Electrodes - Electrodynamics - Electroosmosis - Heavy metals - Lead -
Lead alloys - Pollution - Remediation - Salt removal - Soil pollution control - Soils -
Stainless steel - Welding rods
Uncontrolled terms:Electrokinetic remediation - Electrokinetic technology - Engineering
applications - Heavy metal contaminated soils - Hydroxide precipitation - Phenomenon and
mechanisms - Polyaspartic acid - Stainless steel electrode
Classification code:445.1 Water Treatment Techniques - 454.2 Environmental Impact and
Protection - 483.1 Soils and Soil Mechanics - 531 Metallurgy and Metallography -
538.2.2 Welding Equipment - 544.1 Copper - 544.2 Copper Alloys - 545.3 Steel - 546.1
Lead and Alloys - 549.2 Alkaline Earth Metals - 701 Electricity and Magnetism - 701.1
Electricity: Basic Concepts and Phenomena - 801.1 Chemistry, General - 802.3 Chemical
Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804.1 Organic
Compounds
Numerical data indexing:Electric_Field_Strength 1.00e+02V/m, Electric_Field_Strength
2.00e+02V/m, Percentage 3.50e+01%, Time 5.40e+05s, Volume 2.00e-03m3
DOI:10.13227/j.hjkx.201608195
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 182>
Accession number:20171003409548
Title:Influencing factors of bacterial activity in water distribution networks
Authors:Wang, Xiao-Dan (1, 2); Zhao, Xin-Hua (1)
Author affiliation:(1) School of Environmental Science and Engineering, Tianjin
University, Tianjin; 300072, China; (2) CECEP Consulting Co., Ltd., Beijing; 100082,
China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:622-628
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to study the variation patterns of bacterial activity in water
distributed networks, this paper studied a simulated water distribution network in a
northern China city. Microscopic examination and bacterial counts were conducted on
acridine orange-stained bacteria using fluorenscence microscopy to ensure precise
quantitative analysis. The ratio of viable bacterial count to total bacterial count was
used to characterize the overall bacterial activity in the drinking water distribution
network, as well as to study the impacts imposed by various factors. As indicated, this
method was proved to be rapid, reliable and repeatable in bacterial counts. Populations
of viable bacteria and total bacteria in water samples were 10<sup>3</sup>-
10<sup>4</sup>cells·mL<sup>-1</sup>and 10<sup>4</sup>-
10<sup>5</sup>cells·mL<sup>-1</sup>, respectively. There was a positive
correlation between the bacterial activity and water temperature, turbidity, and flow
velocity. There was also a negative correlation between bacterial activity and residual
chlorine after the operation stabilized. The capacity of different forms of bacteria in
the simulated water distribution networks with tolerance of sodium hypochlorite was in
the following order: long-rod-shaped, spherical-shaped, short-rod-shaped, and curved-
shaped. The reactivation and reproduction capability of rod-shaped bacteria was stronger.
There were more short-rod-shaped bacteria in summer water samples than in winter. ©
2017, Science Press. All right reserved.
Number of references:25
Main heading:Water distribution systems
Controlled terms:Air purification - Bacteria - Citrus fruits - Electric power
distribution - Flow velocity - Fluorescence microscopy - Potable water - Water - Water
supply systems
Uncontrolled terms:Acridine orange - Bacterial activity - Bacterial count - Distributed
networks - Drinking water distribution networks - Positive correlations - Total bacterial
count - Water distribution networks
Classification code:444 Water Resources - 446.1 Water Supply Systems - 631 Fluid Flow
- 643 Space Heating, Ventilation and Air Conditioning - 706.1.2 Electric Power
Distribution - 821.4 Agricultural Products - 931.4 Quantum Theory; Quantum Mechanics
DOI:10.13227/j.hjkx.201604029
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 183>
Accession number:20171003416412
Title:Specificity of intact ladderane lipids in anaerobic ammonium oxidizing bacteria
from four reactors
Authors:Wang, Han (1); Fang, Fang (1); Li, Kai (1); Xing, Hui (1); Guo, Jin-Song (1, 2);
Chen, You-Peng (2); Zeng, Qian-Song (1)
Author affiliation:(1) College of Urban Construction and Environmental Engineering,
Chongqing University, Chongqing; 400045, China; (2) Chongqing Institute of Green and
Intelligent Technology, Chinese Academy of Sciences, Chongqing; 400714, China
Corresponding author:Fang, Fang(fang_cqu@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:238-246
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Intact ladderane lipids are a special kind of phospholipids in the anammoxosome
membrane of AnAOB. Phospholipid organic mixture was extracted respectively from four
sludge samples in anaerobic EGSB reactor,aerobic SBR reactor, autotrophic nitrogen
removal SBBR reactor and anaerobic ammonium oxidation EGSB reactor. Phospholipid extracts
of sludge were detected by the HPLC-ESI-MS/MS method to determine the types of intact
ladderane lipids, and the specificity of intact ladderane lipids was also analyzed, at
the same time, the bacterial community structure of autotrophic nitrogen removal SBBR
reactor and anaerobic ammonium oxidation EGSB reactor was determined by high-throughput
sequencing technology. Analytical results of intact ladderane lipids showed that intact
ladderane lipids were not detected from anaerobic EGSB reactor and aerobic SBR reactor,
and were detected from autotrophic nitrogen removal SBBR reactor and anaerobic ammonium
oxidation EGSB reactor. Five kinds of intact ladderane lipids were detected in the
phospholipid extract of sludge from autotrophic nitrogen removal SBBR reactor, and seven
kinds of intact ladderane lipids were detected in the phospholipid extract of sludge from
anaerobic ammonium oxidation EGSB reactor. The results of high-throughput sequencing
confirmed that the autotrophic nitrogen SBBR reactor contained AnAOB of the genera
Candidatus Brocadia and Candidatus Jettenia, and the anaerobic ammonium oxidation EGSB
reactor contained AnAOB of the genera Candidatus Kuenenia and Candidatus Jettenia. These
results illustrated that intact ladderane lipids were the peculiar phospholipids in
AnAOB. © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Nitrogen removal
Controlled terms:Bacteria - Lipids - Nitrogen - Oxidation - Phospholipids - Throughput -
Wastewater treatment
Uncontrolled terms:Ammonium oxidizing bacteria - Anaerobic ammonium oxidation -
Analytical results - AnAOB - Autotrophic nitrogen removal - Bacterial community structure
- High-throughput sequencing - Reactor
Classification code:452.4 Industrial Wastes Treatment and Disposal - 802.2 Chemical
Reactions - 804 Chemical Products Generally - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201607221
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 184>
Accession number:20171003416422
Title:Composition and environmental adaptation of microbial community in shibahe copper
tailing in zhongtiao mountain in Shanxi
Authors:Liu, Jin-Xian (1); Li, Cui (2); Jing, Ju-Hui (3); Jia, Tong (1); Liu, Xing-Gang
(4); Wang, Xiao-Yun (1); Chai, Bao-Feng (1)
Author affiliation:(1) Institute of Loess Plateau, Shanxi University, Taiyuan; 030006,
China; (2) Faculty of Environment Economics, Shanxi University of Finance and Economic,
Taiyuan; 030006, China; (3) Institute of Biotechnology, Shanxi University, Taiyuan;
030006, China; (4) Department of Environmental Protection and Work Safety, Zhongtiaoshan
Non-ferrous Metal Group Co., Ltd., Yuanqu; 043700, China
Corresponding author:Chai, Bao-Feng(bfchai@sxu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:318-326
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to reveal the effects of heavy metal pollution on microbial community
compositions and microbial community diversity in tailing area, we conducted an
experiment by examining the microbial community in tailing water, sediments and tailing
sand in Shibahe copper tailing in Zhongtiao Mountain. Differences in microbial community
compositions in different habitats and their relationships with environmental parameters
were analyzed. The results showed that the richness and diversity of microbial community
were the largest in tailing sand, but the lowest in tailing water. Microbial community
compositions were similar between tailing water and sediments. There were significant
positive correlations between the relative abundance of the dominant family
(Sphingomonadaceae) and contents of heavy metals (Cd, Cu, Mn, Ni, Pb, Zn), while there
were significant negative correlations between relative abundances of Caulobacteraceae,
Methylobacteriaceae, Nocardioidaceae, Microbacteriaceae, Micrococcaceae, Streptococcaceae
and Paenibacillaceae and heavy metal contents. It showed that most of the bacteria were
inhibited by heavy metals, but Sphingomonadaceae had a higher tolerance to heavy metals
which may indicate that it has a potential for remediation of heavy metal contamination.
© 2017, Science Press. All right reserved.
Number of references:44
Main heading:Copper
Controlled terms:Cadmium - Heavy metals - Lead - Manganese - Microorganisms - Sediments -
Water pollution
Uncontrolled terms:Environmental adaptation - Environmental parameter - Heavy metal
contamination - Heavy metal pollution - Microbial communities - Microbial community
composition - Negative correlation - Positive correlations
Classification code:453 Water Pollution - 461.9 Biology - 483 Soil Mechanics and
Foundations - 531 Metallurgy and Metallography - 543.2 Manganese and Alloys - 544.1
Copper - 546.1 Lead and Alloys - 549.3 Nonferrous Metals and Alloys excluding Alkali
and Alkaline Earth Metals
DOI:10.13227/j.hjkx.201606201
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 185>
Accession number:20171003416396
Title:Correlation between ldi-based land use types and water quality in sanshan island of
Taihu Lake National Wetland Park, Suzhou
Authors:Yang, Zhao-Hui (1); Su, Qun (1); Chen, Zhi-Hui (1); Bai, Jun-Wu (1); Qian, Xin-
Qiang (1); Zhang, Zhi-Min (1)
Author affiliation:(1) School of Environmental Science & Engineering, Suzhou
University of Science and Technology, Suzhou; 215009, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:104-112
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Sanshan island of Taihu Lake National Wetland Park in Suzhou was taken as a case
study to explore the relationship between land use types and water quality under
different spatial and temporal conditions. Firstly, principal component analysis was used
to calculate the comprehensive index of water quality for a given sampling site.
Secondly, landscape development intensity index (LDI), which can represent combined
effects of land use types, was calculated based on GIS spatial analysis technology.
Finally, overall correlation between water quality and land use types was obtained by
using Pearson correlation analysis. The results showed that the water quality varied with
the spatial distribution of the wetland park. Totally, water quality of west region was
good and water quality of east region was poor; Built-up land and water quality
integrated index exhibited obvious positive correlation. And natural water and water
quality index was significantly negatively correlated; By building relationship of water
quality index and LDI index within 100, 150, 200, 250, 300, 350, 400, 450 and 500 m
radius buffer, Pearson's r values between them were 0.641, 0.678, 0.691, 0.685, 0.691,
0.695, 0.680, 0.653 and 0.649 respectively (P<0.01). These statistics indicated
obvious and stable overall correlation between land use types and water quality. This can
reflect a variety of land use types'comprehensive effects on wetland water quality, and
partly overcome the weakness of incomplete and difficult explanation for water quality
changes with single type of land use. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Quality control
Controlled terms:Correlation methods - Geographic information systems - Lakes - Land use
- Landforms - Principal component analysis - Water quality - Wetlands
Uncontrolled terms:Comprehensive indices - Land use type - Landscape development
intensities - Pearson correlation analysis - Positive correlations - Principle component
analysis - Water quality indexes - Wetland parks
Classification code:403 Urban and Regional Planning and Development - 445.2 Water
Analysis - 481.1 Geology - 903.3 Information Retrieval and Use - 913.3 Quality
Assurance and Control - 922.2 Mathematical Statistics
Numerical data indexing:Size 4.50e+02m, Size 5.00e+02m
DOI:10.13227/j.hjkx.201606122
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 186>
Accession number:20171003416399
Title:Change and influencing factors of dissolved carbon and dissolved nitrogen in water
of the three gorges reservoir
Authors:Fan, Zhi-Wei (1, 2); Hao, Qing-Ju (1, 2); Huang, Zhe (1, 2); Chai, Xue-Si (1, 2);
Jiang, Chang-Sheng (1, 2)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400716, China; (2) Key Laboratory of Eco-environments in Three Gorges
Reservoir Region, Ministry of Education, Chongqing; 400716, China
Corresponding author:Jiang, Chang-Sheng(jiangcs@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:129-137
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to understand the changes of dissolved carbon and dissolved nitrogen in
the water of Three Gorges Reservoir, this research was carried out once a week by the
bank of Yangtze River in Fuling beach from March 2011 to August 2012, and the variation
characteristics of dissolved C, N composition and their source were analyzed. The results
showed that the concentration of DOC ranged from 0.64 mg·L<sup>-1</sup>to 9.07
mg·L<sup>-1</sup>, and had obvious seasonal change: summer>spring and
autumn>winter. Annual total input of DOC was 1.78 × 10<sup>9</sup>kg, the
seasonal change trend of the total input of DOC was similar to that of the concentration
of DOC; The concentration of DTN ranged from 2.59 mg·L<sup>-1</sup>to 4.35
mg·L<sup>-1</sup>: spring>winter>summer>autumn, annual total input was
1.32 × 10<sup>9</sup>kg,the seasonal input changed in the order of
summer>autumn>spring>winter, among them DON, NO<inf>3</inf><sup>-</sup>-N
accounted for 30.35%-63.45% and 35.87%-67.72%, respectively. DOC was affected by
precipitation and air temperature, and mainly came from the exogenous input, in the
spring and summer its exogenous input increased with the increase of rainfall runoff, but
in the autumn and winter the endogenous contribution increased; DTN was relatively
affected by human emissions and water dilution. Correlation analysis showed that there
was a significant negative correlation between DOC and DON (P<0.05), DOC/DON ratio
usually reflects the source of the DOM, the DOC/DON in the water of three gorges
reservoir ranged from 0.35 to 7.28, the source of DOM had obvious seasonal
characteristics. DOC/DON was the highest in summer, and the DOM mainly came from
watershed erosion; DOC/DON was the lowest in winter, and the DOM mainly came from living
sewage and endogenous field; the DOC/DON ratios in spring and autumn were higher than
those in winter and lower than those in summer, and the DOM sources included watershed
erosion, living sewage and endogenous field. © 2017, Science Press. All right
reserved.
Number of references:35
Main heading:Reservoirs (water)
Controlled terms:Dissolution - Erosion - Nitrogen - Precipitation (meteorology) - Sewage
- Watersheds
Uncontrolled terms:Correlation analysis - Dissolved nitrogen - Influencing factors -
Negative correlation - Seasonal characteristics - Seasonal variation - Three gorges
reservoir - Variation characteristics
Classification code:441.2 Reservoirs - 443.3 Precipitation - 444.1 Surface Water -
452.1 Sewage - 802.3 Chemical Operations - 804 Chemical Products Generally
Numerical data indexing:Mass_Density 6.40e-04kg/m3 to 9.07e-03kg/m3, Percentage 3.04e+01%
to 6.35e+01%, Percentage 3.59e+01% to 6.77e+01%
DOI:10.13227/j.hjkx.201606031
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 187>
Accession number:20171003416423
Title:Spatial distribution and source of perfluorinated compounds in urban soil from part
of cities in Anhui Province, China
Authors:Li, Fa-Song (1, 2, 3); Ni, Hui (1); Huang, Han-Yu (1); Xu, Zhi-Bing (1); Zhang,
Qian (1); Li, Chang-Xia (1); Huang, Wen-Xiu (1); Jin, Tao-Sheng (2)
Author affiliation:(1) College of Environmental Resources, Anqing Normal University,
Anqing; 246011, China; (2) Key Laboratory of Pollution Processes and Environmental
Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin;
300071, China; (3) State Key Laboratory of Environmental Chemistry and Ecotoxicology,
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing;
100085, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:327-332
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to explore the spatial distribution and source of perfluorinated
compounds (PFCs), eleven mixed urban soil samples were collected from 7 cities in Anhui
Province in 2013. Fifteen individual PFCs were detected by ultra-performance liquid
chromatography-tandem mass spectrometry (UPLC-MS/MS), and principal components analysis
was used to trace the different sources of PFCs in urban soil. The results showed that
the total concentration of PFCs (∑PFCs) ranged from 1.15 to 5.98 ng·g<sup>-
1</sup>dry weight (dw), with an average concentration of 2.69 ng·g<sup>-1</sup>.
perfluorooctane sulfonate (PFOS) with a concentration range of n.d. -3.56
ng·g<sup>-1</sup>and an average concentration of 0.96 ng·g<sup>-1</sup>was
the dominant PFC contaminant, followed by perfluorooctane acid (PFOA) with a
concentration range of n.d. -2.89 ng·g<sup>-1</sup>and an average concentration of
0.64 ng·g<sup>-1</sup>. The highest ∑PFCs concentration in all selected mixed
urban soil samples was from Chuzhou City with the value of 5.89 ng·g<sup>-1</sup>,
followed by Jingxian County of Xuancheng City (4.04 ng·g<sup>-1</sup>).
Interestingly, the PFOS concentration was as high as 3.56 ng·g<sup>-1</sup>in
Jingxian County, accounting for 88.1% of the total PFCs concentration, which might be
influenced by paper industry in this area. Comparing to other soil samples in China,
∑PFCs concentration of urban soil from Anhui Province was at middle level. Over 60%
of ∑PFCs in urban soil of Anhui province could be attributed to the four principal
components, represented by PFOA, perfluorobutane sulfonate, perfluorododecanoic acid,
perfluorobutane acid and PFOS. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Soil surveys
Controlled terms:Drug products - Liquid chromatography - Mass spectrometry - Paper and
pulp industry - Principal component analysis - Soils - Spatial distribution
Uncontrolled terms:Anhui province - Perfluorinated compound (PFCs) - Perfluorinated
compounds - Perfluorooctane sulfonates - Principal components analysis - Source - Ultra
performance liquid chromatography tandem mass spectrometry (UPLC MS/MS) - Urban soils
Classification code:483.1 Soils and Soil Mechanics - 801 Chemistry - 811.1 Pulp and
Paper - 921 Mathematics - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 6.00e+01%, Percentage 8.81e+01%
DOI:10.13227/j.hjkx.201605019
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 188>
Accession number:20171003409564
Title:Effects of different vegetation types and reclamation years on soil bacterial
community structure in reclaimed mine areas
Authors:He, Long (1); Li, Yan-Qin (1); Li, Bin-Chun (1); Li, Jun-Jian (2)
Author affiliation:(1) Key Laboratory of Chemical Biology and Molecular Engineering of
Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan; 030006,
China; (2) Institute of Loess Plateau, Shanxi University, Taiyuan; 030006, China
Corresponding author:Li, Yan-Qin(yanqin@sxu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:752-759
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Effects of different vegetation types (Ulmus pumila, Larix gmelinii, Armeniaca
vulgaris, Picea asperata and Robinia pseudoacacia) and reclamation years (15 and 20
years) on soil bacterial community structure in reclaimed Antaibao opencast mine areas
were investigated using polymerase chain reaction-denaturing gradient gel electrophoresis
(PCR-DGGE) and clone sequencing. For 20-year reclaimed soils, the significantly highest
and lowest bacterial diversity were found in U. pumila and A. vulgaris stand,
respectively, whereas no significant differences were found between the other three
vegetation types. Under 15-year plantations, soil bacterial diversity index of P.
asperata was significantly higher than that of R. pseudoacacia. Soil bacterial diversity
index significantly increased in R. pseudoacacia planted soils but decreased in P.
asperata treatment with the increase of reclaimed years. No significant change of soil
bacterial community structure was observed in the same reclamation years based on the
similarity coefficient analysis, cluster analysis and principal component analysis (PCA).
Pearson correlation analysis demonstrated that bacterial diversity index was
significantly positively correlated with soil pH. Nitrospira, Sphingomonas, Arthrobacter,
Brachybacterium, Rhizobium as well as Mesorhizobium, which play important roles in the
nitrogen cycle, degradation of polycyclic aromatic hydrocarbons and other organic matter,
were identified by clone sequencing of the DGGE bands. Our results indicated that U.
pumila and P. asperata were conducive to the recovery of soil bacterial diversity. The
most dominant bacterial community from reclaimed mine soil would be beneficial for
restoring wasteland contaminated soil and improving soil fertility. © 2017, Science
Press. All right reserved.
Number of references:26
Main heading:Reclamation
Controlled terms:Aromatic hydrocarbons - Bacteria - Cloning - Cluster analysis -
Correlation methods - Electrophoresis - Polycyclic aromatic hydrocarbons - Polymerase
chain reaction - Principal component analysis - Social sciences - Soil pollution - Soils
- Vegetation
Uncontrolled terms:Bacterial community structure - Functional bacteria - Mine areas -
PCR-DGGE - Pearson correlation analysis - Polymerase chain reaction-denaturing gradient
gel electrophoreses (PCR-DGGE) - Similarity coefficients - Soil bacterial community
Classification code:461.8.1 Genetic Engineering - 483.1 Soils and Soil Mechanics - 723
Computer Software, Data Handling and Applications - 801 Chemistry - 804.1 Organic
Compounds - 922.2 Mathematical Statistics - 971 Social Sciences
Numerical data indexing:Age 1.50e+01yr, Age 2.00e+01yr
DOI:10.13227/j.hjkx.201607200
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 189>
Accession number:20171003409559
Title:Compositions, sources and health risks of polycyclic aromatic hydrocarbons (PAHs)
in surface dusts from driving-schools in a city of Henan Province, China
Authors:Chen, Yi-Nan (1); Ma, Jian-Hua (1, 2); Duan, Hai-Jing (1); Wei, Lin-Heng (1)
Author affiliation:(1) Institute of Natural Resources and Environment, Henan University,
Kaifeng; 475004, China; (2) Collaborative Innovation Center on Yellow River Civilization
of Henan Province, Kaifeng; 475004, China
Corresponding author:Ma, Jian-Hua(mjh@henu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:711-720
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The contamination of polycyclic aromatic hydrocarbons (PAHs) in surface dusts
attracts great attentions due to their properties of threatening human health. Twenty-
nine surface dust samples were collected from driving-schools in a city of Henan.
Concentrations of 16 priority PAHs were analyzed by gas chromatography-mass spectrometry
(GC-MS). The health risks exposed to dust PAHs for three different scenarios (working for
5 a, 10 a and 20 a in driving-school) were estimated by the health risk assessment model
(ILCRs). Source identification was analyzed by diagnostic ratio, composition analysis,
and principal component analysis. The results showed that concentrations of the ∑PAHs
in dusts ranged from 198.21 to 3 400.89 μg·kg<sup>-1</sup>, with a mean of
908.72 μg·kg<sup>-1</sup>. Among individual PAHs, the contents of naphthalene
(Nap), phenanthrene (Phe), anthracene (Ant) and fluoranthene (Flu) were higher, and the
content of dibenzo[a, h]anthracene (DBA) was the lowest. The dominant compounds were 2-3
ring PAHs, which accounted for 55.79%, while the 4-6 ring PAHs accounted for 44.21%. The
health risks exposed to PAHs in dust in three different scenarios were
9.27×10<sup>-8</sup>, 1.85×10<sup>-7</sup>, and 3.71×10<sup>-
7</sup>respectively; only sample J11 was with potential health risk in scenario 3, and
the other samples were all without risks. Average daily doses by dermal contact of dust
particles for the PAHs was the main exposure way. PAHs in dusts of driving-school were
mainly originated from the combustion of fossil fuels and mixture combustion. The major
sources of dust PAHs in farmland area driving-schools were natural gas and diesel
combustion (56.44%), coal combustion (26.55%), gasoline combustion and the leakage
(17.01%); dust PAHs in industrial area driving-schools were from mixture combustion
(76.26%), gasoline combustion and the leakage (22.85%), coking and coal combustion
(0.89%); and dust PAHs in mixed area driving-schools were from coal combustion (45.57%),
natural gas and diesel combustion (45.41%), gasoline combustion and the leakage (9.02%).
The concentrations and health risks of heavy metals in dusts were closely related to the
surroundings around driving-schools and the previous land use status. © 2017,
Science Press. All right reserved.
Number of references:36
Main heading:Coal combustion
Controlled terms:Anthracene - Aromatic compounds - Aromatic hydrocarbons - Aromatization
- Chemical analysis - Chromatography - Coal - Coal dust - Coking - Dust - Elementary
particle sources - Fossil fuels - Gas chromatography - Gasoline - Health - Health risks -
Heavy metals - Hydrocarbons - Land use - Mass spectrometry - Mixtures - Naphthalene -
Natural gas - Polycyclic aromatic hydrocarbons - Principal component analysis - Risk
assessment - Risk perception - Societies and institutions
Uncontrolled terms:Composition analysis - Diagnostic ratios - Diesel combustion -
Driving-school - Gas chromatography-mass spectrometries (GC-MS) - Polycyclic aromatic
hydrocarbons (PAHS) - Potential health risks - Source identification
Classification code:403 Urban and Regional Planning and Development - 451.1 Air
Pollution Sources - 461.6 Medicine and Pharmacology - 461.7 Health Care - 522 Gas
Fuels - 523 Liquid Fuels - 524 Solid Fuels - 531 Metallurgy and Metallography - 801
Chemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804.1 Organic
Compounds - 901.1.1 Societies and Institutions - 914.1 Accidents and Accident
Prevention - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 1.70e+01%, Percentage 2.29e+01%, Percentage 2.66e+01%,
Percentage 4.42e+01%, Percentage 4.54e+01%, Percentage 4.56e+01%, Percentage 5.58e+01%,
Percentage 5.64e+01%, Percentage 7.63e+01%, Percentage 8.90e-01%, Percentage 9.02e+00%
DOI:10.13227/j.hjkx.201607119
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 190>
Accession number:20171003416425
Title:Effects of different water managements and soil Eh on migration and accumulation of
Cd in rice
Authors:Tian, Tao (1); Zeng, Min (1); Zhou, Hang (1); Xu, Jun (1); Yang, Wen-Tao (1); Gu,
Jiao-Feng (1); Zou, Jia-Ling (1); Zhang, Ping (1); Peng, Pei-Qin (1); Liao, Bo-Han (1)
Author affiliation:(1) College of Environmental Science and Engineering, Central South
University of Forestry and Technology, Changsha; 410004, China
Corresponding author:Liao, Bo-Han(liaobh1020@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:343-351
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A pot experiment was conducted to study the effects of four modes of water
managements on soil Eh values, bioavailability of soil Cd, migration and accumulation of
Cd in rice. These four modes of water managements were moistening throughout the entire
period of rice growth (M), moistening before filling stage and flooding after filling
stage (M-F), flooding before filling stage and moistening after filling stage (F-M), and
flooding throughout the entire period of rice growth (F). The results indicated that the
exchangeable contents of Cd increased firstly and then declined with the soil Eh values
changing from negative to positive. Compared with M, the other three modes (M-F, F-M, and
F) significantly reduced the contents of Cd in all rice tissues, including roots, stems,
husks and brown rice. Meanwhile, Cd contents in brown rice due to the treatments of M-F
and F were 0.19 mg·kg<sup>-1</sup>and 0.10 mg·kg<sup>-1</sup>,
respectively. These Cd contents were lower than the limits of 0.2 mg·kg<sup>-
1</sup>in national food safety standard (GB 2762-2012). Compared with M, the other three
modes significantly decreased Cd accumulation amounts in the aboveground parts of rice
and also decreased Cd translocation factors in rice. There were significant positive
exponential relations between soil Eh values and Cd accumulation amounts in the
aboveground parts of rice, Cd translocation factors in rice, or Cd contents in brown
rice. The rice biomass due to M-F treatment reached the maximum among the four modes. It
was worthy to be mentioned that although Weiyou 46 was considered a variety rice with
high Cd accumulation, Cd content in rice brown of Weiyou 46 could be lower than 0.2
mg·kg<sup>-1</sup>in the 5 mg·kg<sup>-1</sup>of Cd contaminated soil
through proper water managements. In summary, M-F treatment ensured high rice yield with
low Cd contents in brown rice and could be recommended as the irrigation mode in rice
production. Simultaneously, maintaining soil Eh value between -160-130 mV was also
important after the filling stage. © 2017, Science Press. All right reserved.
Number of references:40
Main heading:Soil pollution
Controlled terms:Bioaccumulation - Biochemistry - Filling - Floods - Food safety - Soils
- Water management
Uncontrolled terms:Cd accumulation - Cd-contaminated soils - Exponential relation -
Irrigation modes - Migration and accumulation - Rice - Rice production - Translocation
factor
Classification code:461.6 Medicine and Pharmacology - 461.9 Biology - 483.1 Soils and
Soil Mechanics - 691.2 Materials Handling Methods - 801.2 Biochemistry
Numerical data indexing:Voltage -1.60e-01V
DOI:10.13227/j.hjkx.201605234
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 191>
Accession number:20171003416401
Title:Characteristics of nitrogen transport and its source trace in loess plateau's dam
watershed in alternating wet and dry seasons: a case study of yangjuangou watershed
Authors:Jia, Jun-Jie (1, 2); Gao, Yang (1, 2); Chen, Wei-Liang (1); Hao, Zhuo (1); Wang,
Ya-Feng (3); Chen, Li-Ding (3)
Author affiliation:(1) Key Laboratory of Ecosystem Network Observation and Modeling,
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of
Sciences, Beijing; 100101, China; (2) University of Chinese Academy of Sciences, Beijing;
100049, China; (3) State Key Laboratory of Urban and Regional Ecology, Research Center
for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085, China
Corresponding author:Gao, Yang(gaoyang@igsnrr.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:147-155
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this study, we wanted to explore the impacts of N wet deposition on N export
and trace the N source by isotopic method through monitoring N wet deposition in Loess
Plateau's Dam Watershed in alternating wet and dry seasons, through measuring N wet
deposition, rainfall-runoff and base flow process and analyzing concentration change of
different forms of N. The results showed that there were 11 rainfall events in the 2015
wet season, in which N wet deposition load reached 814.18 kg and N deposition flux was
about 4.26 kg·hm<sup>-2</sup>, while there were three rainfall events in the 2015
dry season, in which N wet deposition load reached 155.58 kg and N deposition flux was
0.83 kg·hm<sup>-2</sup>, so it presented a great seasonal variability. By
collecting the dynamic process of four rainfall events, we found that, different rainfall
intensity had different influence on N export process. The contribution of N wet
deposition of four rainfall events to N export in watershed was 16.94 kg. The ratio that
N output load of rainfall and river in watershed N output load was 14.45%-64.84%, which
showed that the contribution of rainfall to watershed N transport was big. The variation
range of δ<sup>15</sup>N in Loess Plateau's Dam Watershed was big, which was -
0.844‰-12.791‰, and the δ<sup>18</sup>O was within the range of 8.166
‰-15.115 ‰ in the dam watershed. © 2017, Science Press. All right
reserved.
Number of references:30
Main heading:Watersheds
Controlled terms:Dams - Deposition - Drought - Isotopes - Landforms - Nitrogen - Rain -
Runoff - Sediments
Uncontrolled terms:Alternating wet and dries - Concentration change - Loess Plateau -
Nitrogen transport - Output load - Rainfall intensity - Seasonal variability - Wet
deposition
Classification code:441.1 Dams - 443.3 Precipitation - 444.1 Surface Water - 481.1
Geology - 483 Soil Mechanics and Foundations - 802.3 Chemical Operations - 804
Chemical Products Generally
Numerical data indexing:Mass 1.56e+02kg, Mass 1.69e+01kg, Mass 8.14e+02kg, Percentage
1.44e+01% to 6.48e+01%
DOI:10.13227/j.hjkx.201604091
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 192>
Accession number:20171003416424
Title:Effects of biochar pyrolyzed at varying temperatures on soil organic carbon and its
components: influence on the soil active organic carbon
Authors:Zhao, Shi-Xiang (1); Yu, Xiao-Ling (1); Li, Zhong-Hui (1); Yang, Yan (1); Liu,
Dan (1); Wang, Xu-Dong (1, 2); Zhang, A-Feng (1)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) Key Laboratory Plant Nutrition and the Agri-
environment in Northwest China, Ministry of Agriculture, Yangling; 712100, China
Corresponding author:Zhang, A-Feng(zhangafeng@nwsuaf.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:333-342
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Soil active organic carbon is the most important carbon pool and a good
indicator in ecosystem management due to its great significance in soil carbon cycling
and soil quality. In order to investigate the effect of biochar(BC)addition on soil
organic matter fractions, apple tree twigs were used to produce BC at 300, 400, 500 and
600℃, respectively. Elemental analysis and Fourier transform infrared (FTIR)
spectroscopy were used to determine the characteristics of BC. Four kinds of BC were
added into soils at five application rates(0, 0.5%, 1%, 2% and 3%) and incubated at
25℃ in lab for over 360 days. Soil organic carbon (SOC), microbial biomass carbon
(MBC), water soluble organic carbon (WSOC) and readily oxidized organic carbon (ROC) were
measured during the incubation. The mass fraction of carbon (C) in the generated BC
ranged from 62.20%-80.01%, while hydrogen (H) ranged from 2.72%-5.18% and Oxygen (O)
ranged from 15.98%-30.92%. The increasing temperature increased the mass fraction of C,
while decreased the O and H mass content, as well as the ratio of H/C and O/C. The
addition of BC significantly increased SOC, and the treatments amended with BC500 had the
highest increments. Compared with the control treatment (CK), the addition of BC produced
at temperatures below 400℃ increased the contents of MBC, WSOC and ROC during the
incubation, at the end of the incubation, BC300 treatments significantly increased the
contents by 38.25%, 82.09% and 63.53% (P<0.05), respectively; BC400 treatments
significantly increased the contents by 26.07%, 65.61% and 48.09% (P<0.05),
respectively; while lower contents of MBC, WSOC and ROC were found in the treatments
amended with BC produced at temperatures above 400℃ after 40-60 d incubation. After
360 d of incubation, the contents of MBC, WSOC and ROC were significantly decreased by
0.27%,13.48% and 14.67% in BC500 treatments and 7.80%,14.66% and 15.79% in BC600
treatments (except for the MBC in BC500 treatment) (P<0.05). The relative contents of
ROC ranged from 3.39% to 15.65%, BC application decreased the relative content of ROC,
suggesting that the increase was in proportion to the stability of organic carbon in the
soil. Considering the content and quality of SOC, when the BC products were applied to
the Loutu soil, 500℃ was the optimal temperature for preparing apple-derived BC due
to its significant increase of the soil organic carbon and a slight decrease of the
relative content of soil active organic carbon. © 2017, Science Press. All right
reserved.
Number of references:50
Main heading:Organic carbon
Controlled terms:Fourier transform infrared spectroscopy - Fruits - Soils
Uncontrolled terms:Bio chars - Ecosystem management - Increasing temperatures - Microbial
biomass carbon - Soil organic carbon - Soil organic matters - Varying temperature -
Water-soluble organic carbon
Classification code:483.1 Soils and Soil Mechanics - 801 Chemistry - 804.1 Organic
Compounds - 821.4 Agricultural Products
Numerical data indexing:Age 9.86e-01yr, Percentage 1.00e+00%, Percentage 1.47e+01%,
Percentage 1.58e+01%, Percentage 1.60e+01% to 3.09e+01%, Percentage 2.00e+00%, Percentage
2.61e+01%, Percentage 2.70e-01%, Percentage 2.72e+00% to 5.18e+00%, Percentage 3.00e+00%,
Percentage 3.39e+00% to 1.57e+01%, Percentage 3.82e+01%, Percentage 5.00e-01%, Percentage
6.22e+01% to 8.00e+01%, Percentage 6.56e+01%, Percentage 7.80e+00%, Percentage 8.21e+01%
DOI:10.13227/j.hjkx.201604058
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 193>
Accession number:20171003409531
Title:Variations in aerosol optical depth over three northeastern provinces of China, in
2003-2014
Authors:Zhang, Chen-He (1, 3); Zhao, Tian-Liang (1); Wang, Fu (2); Xu, Xiang-De (3); Su,
Hang (4); Cheng, Xing-Hong (3); Tan, Cheng-Hao (1)
Author affiliation:(1) Key Laboratory for Aerosol-Cloud-Precipitation of China
Meteorological Administration, Collaborative Innovation Center on Forecast and Evaluation
of Meteorological Disasters, Nanjing University of Information Science & Technology,
Nanjing; 210044, China; (2) National Satellite Meteorological Center, China
Meteorological Administration, Beijing; 100081, China; (3) State Key Laboratory of Severe
Weather, Chinese Academy of Meteorological Sciences, Beijing; 100081, China; (4)
Meteorological Observatory of Liaoning Province, Shenyang; 110166, China
Corresponding author:Zhao, Tian-Liang(josef_zhao@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:2
Issue date:February 15, 2017
Publication year:2017
Pages:476-484
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on the MODIS-Aqua aerosol optical depth (AOD) products from 2003 to 2014,
Nighttime Lights Time data from DMSP satellites and basic meteorological data, the AOD
spatial distributions of interannual and seasonal variations over three northeastern
provinces of China(Liaoning, Jilin, Heilongjiang) were analyzed. It was found that there
was a northeast-southwest area of high annual average AOD composed of Dalian, Shenyang,
Changchun, Harbin and other cities, the 12-year average AOD value was 0.4-0.8. The low
AOD occurred in the eastern and northern areas of the three northeastern provinces of
China, where the forest-covering rate was high, and the 12-year average AOD value was
less than 0.3. The seasonal variations of annual average AOD showed an increasing trend
from spring to summer, then decreased in autumn and increased again in winter. The
interannual variations of AOD over three northeastern provinces of China showed a
decreasing trend in most areas, but the increasing trend occurred in the northeast-
southwest region with the axis formed by Shenyang, Changchun and Harbin, revealing the
polarization in recent 10 years over three northeastern provinces of China. In addition,
spatial distribution of annual average AOD over three northeastern provinces of China in
the years of strong and weak Western North Pacific Summer Monsoon was studied. Affected
by the surface wind field, annual average AOD in weak monsoon years was higher than that
in strong monsoon years. © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Atmospheric thermodynamics
Controlled terms:Aerosols - Atmospheric aerosols - Meteorology - Optical properties -
Radiometers - Spatial distribution
Uncontrolled terms:Aerosol optical depths - Interannual variation - MODIS - Three
northeastern provinces of China - Western north pacific summer monsoons
Classification code:443.1 Atmospheric Properties - 741.1 Light/Optics - 921
Mathematics - 944.7 Radiation Measuring Instruments
Numerical data indexing:Age 1.00e+01yr, Age 1.20e+01yr
DOI:10.13227/j.hjkx.201608043
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 194>
Accession number:20171003416420
Title:Effects of different agricultural practices on soil carbon pool in North China
Plain
Authors:Shi, Xiao-Xia (1); Zhao, Yi (1); Zhang, Lin (1); Wu, Wen-Liang (1); Meng, Fan-
Qiao (1)
Author affiliation:(1) College of Resources and Environmental Sciences, China
Agricultural University, Beijing; 100193, China
Corresponding author:Meng, Fan-Qiao(mengfq@cau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:1
Issue date:January 15, 2017
Publication year:2017
Pages:301-308
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:North China Plain is an important region of grain production. Soil fertility and
grain production in this region are significantly influenced by the levels of soil carbon
and nitrogen. In order to explore the effects of agricultural practices on the levels of
soil carbon and nitrogen, a long-term field experiment was started in 1999 in Quzhou
County, Hebei Province. Four treatments, including following nature (F), tillage without
straw (N), no tillage with crushed straw incorporation (S), and tillage with crushed
straw incorporation (TS), were chosen to collect soil samples at the layers of 0-20 cm
and 20-40 cm in 2013. Soil organic carbon (SOC), soil inorganic carbon (SIC), total
carbon (TC), total nitrogen (TN), δ<sup>13</sup>C<inf>SOC</inf>,
δ<sup>13</sup>C<inf>SIC</inf>and δ<sup>15</sup>N were analyzed. The results
indicated that compared with F, SOC stocks of N, S and TS decreased by 21.6%, 12.3% and
3.4% in the 0-20 cm soil layer, but the changes of SIC stocks were not significant. In
the 20-40 cm soil layer, the changes of the SOC stocks were not significant, but the SIC
stocks increased by 4.1% (N), 7.3% (S) and 5.0% (TS) compared to F, respectively. Major
contribution of SIC increase was the pedogenic inorganic carbonate (PIC), which increased
by 97%-261% in the farmland soil. In the soil layer of 0-20 cm, the values of
δ<sup>15</sup>N, δ<sup>13</sup>C<inf>SIC</inf>and
δ<sup>13</sup>C<inf>SOC</inf>in the farmland treatments were higher than those of
F, meanwhile, the values of δ<sup>13</sup>C<inf>SOC</inf>were significantly higher
than that of F. In the soil layer of 20-40 cm, the values of δ<sup>15</sup>N and
δ<sup>13</sup>C<inf>SIC</inf>were lower than those of F, but the value of
δ<sup>13</sup>C<inf>SOC</inf>showed the opposite trend. In North China Plain,
lithogenic inorganic carbonate (LIC) of farmland soil decomposed and PIC increased by the
soil-crop system, which provided CO<inf>2</inf>for the formation of PIC, and straw
returning was an effective agricultural practice to restore the soil carbon decreased by
tillage. There should be more long-term monitoring and studies for the impacts of crop
straw incorporation and tillage on SOC and SIC, especially for soil in deeper layers.
© 2017, Science Press. All right reserved.
Number of references:40
Main heading:Soils
Controlled terms:Agricultural machinery - Agriculture - Carbon - Carbon dioxide - Crops -
Farms - Grain (agricultural product) - Nitrogen - Organic carbon - Soil surveys
Uncontrolled terms:Crop straws - Natural isotopes - North China Plain - Soil inorganic
carbons - Soil organic carbon
Classification code:483.1 Soils and Soil Mechanics - 804 Chemical Products Generally -
821 Agricultural Equipment and Methods; Vegetation and Pest Control
Numerical data indexing:Percentage 1.23e+01%, Percentage 2.16e+01%, Percentage 3.40e+00%,
Percentage 9.70e+01% to 2.61e+02%, Size 0.00e+00m to 2.00e-01m, Size 2.00e-01m to 4.00e-
01m
DOI:10.13227/j.hjkx.201605212
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 195>
Accession number:20172703864515
Title:Concentration Characteristics and Sources of Trace Metals in PM<inf>2.5</inf>During
Wintertime in Beijing
Authors:Qiao, Bao-Wen (1, 2); Liu, Zi-Rui (2); Hu, Bo (2); Liu, Jing-Yun (1, 2); Pang,
Ni-Ni (1, 2); Wu, Fang-Kun (2); Xu, Zhong-Jun (1); Wang, Yue-Si (2)
Author affiliation:(1) Department of Environmental Science and Engineering, Beijing
University of Chemical Technology, Beijing; 100029, China; (2) State Key Laboratory of
Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric
Physics, Chinese Academy of Sciences, Beijing; 100029, China
Corresponding author:Xu, Zhong-Jun(xuzj@mail.buct.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:876-883
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To study the characteristics and sources of trace metals in
PM<inf>2.5</inf>during wintertime in Beijing, PM<inf>2.5</inf>samples were collected from
December 2014 to January 2015 by a middle volume sampler in the urban area of Beijing for
30 consecutive days. The mass concentration of PM<inf>2.5</inf>was measured by filter
membrane weighting method, and 16 kinds of trace metals were determined by inductively
couple plasma-mass spectrometry (ICP-MS). In addition, the pollution characteristics and
sources of trace metals were analyzed by enrichment factor (EF) method and factor
analysis, respectively. The results showed that the concentrations of five elements (i.e.
K, Ca, Fe, Al and Mg) accounted for 90.7% of the total metal elements. The concentrations
of the metal elements changed obviously between day and night. Compared with daytime,
crustal elements like Mg and Al decreased by more than 30% while anthropogenic elements
like Cu and Pb increased by more than 40% in nighttime. Although the concentrations of
metal elements increased by nearly one time in heavy pollution days compared with clean
days, the mass percent of which in PM<inf>2.5</inf>decreased from 10.9% in clean days to
4.6% in heavy pollution days. This result suggested the accumulation of metal elements in
heavy pollution days had a minor contribution to the increased mass concentration of
PM<inf>2.5</inf>. As the pollution episode progressed, anthropogenic elements (Cu, Zn,
As, Se, Ag and Cd) increased faster than crustal elements (Al, Mg, Ca, Mn and Fe), which
showed ratios ranging from 2.9 to 5.3 for anthropogenic elements and ratios ranging from
1.2 to 1.8 for crustal elements, when compared between heavy pollution days and clean
days. In addition, the EF value of anthropogenic elements was also increased in the
pollution days, indicating the concentrations of these elements was further influenced by
the anthropogenic sources. Factor analysis showed that metal elements of
PM<inf>2.5</inf>during wintertime of Beijing were mainly from coal combustion and biomass
burning, motor vehicle and industry emissions, and re-suspension of road dust, with the
contributions of 34.2%, 25.5% and 17.1%, respectively. © 2017, Science Press. All
right reserved.
Number of references:42
Main heading:Trace elements
Controlled terms:Aluminum - Calcium - Coal combustion - Coal dust - Coal industry -
Factor analysis - Lead - Magnesium - Magnetic levitation vehicles - Mass spectrometry -
Metal analysis - Metals - Multivariant analysis - Pollution
Uncontrolled terms:Anthropogenic elements - Anthropogenic sources - Beijing - Enrichment
factors - Industry emissions - Mass concentration - Metal elements - Plasma mass
spectrometry
Classification code:503 Mines and Mining, Coal - 521 Fuel Combustion and Flame Research
- 524 Solid Fuels - 541.1 Aluminum - 546.1 Lead and Alloys - 549.2 Alkaline Earth
Metals - 801 Chemistry - 922 Statistical Methods - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 1.09e+01%, Percentage 1.71e+01%, Percentage 2.55e+01%,
Percentage 3.00e+01%, Percentage 3.42e+01%, Percentage 4.00e+01%, Percentage 4.60e+00%,
Percentage 9.07e+01%
DOI:10.13227/j.hjkx.201607144
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 196>
Accession number:20172703864537
Title:Enhanced Removal of Herbicide 2,4-dichlorophenoxyacetic Acid and Simultaneous Power
Generation in Microbial Fuel Cells
Authors:Quan, Xiang-Chun (1); Quan, Yan-Ping (1); Xiao, Zhu-Tian (1)
Author affiliation:(1) State Key Laboratory of Water Environment Simulation, School of
Environment, Beijing Normal University, Beijing; 100875, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1067-1073
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study investigated the effects of a widely used herbicide 2,4-
dichlorophenoxyacetic acid on power generation, pollutants removal from microbial fuel
cells (MFCs) and microbial community changes, and also explored anode pre-aeration for
enhanced 2,4-D removal and power generation. The results showed that when 2,4-D was
inputted to the anode chamber of MFCs which was previously enriched with acetate sodium
as the fuel, the voltage output and power density declined and the internal resistance
increased apparently. The maximum power density declined to 0.057 W·m<sup>-
2</sup>in the presence of 300 mg·L<sup>-1</sup>2,4-D comparing to 0.151
W·m<sup>-2</sup>obtained with acetate alone (850 mg·L<sup>-1</sup>), and
the internal resistance increased from 524 Ω to 1 230 Ω correspondingly. To
accelerate 2,4-D removal rate and reduce its inhibition to anode exoelectrogens, 6h pre-
aeration was applied to the anode chamber. Fast removal of 2,4-D was achieved during
aeration period and simultaneous high maximum voltage output (0.42-0.47 V) was obtained.
Anode microbial community changed after 2,4-D addition and several 2,4-D degrading
bacteria and 2,4-D tolerant exoelectrogen were enriched. MFCs could be used for 2,4-D
removal and simultaneous power generation through anode pre-aeration. © 2017,
Science Press. All right reserved.
Number of references:27
Main heading:Microbial fuel cells
Controlled terms:Anodes - Biodegradation - Electrodes - Fuel cells - Herbicides -
Microorganisms - Weed control
Uncontrolled terms:2 ,4-dichlorophenoxyacetic acid - Anode aerations - Internal
resistance - Maximum power density - Microbial communities - Microbial fuel cells (MFCs)
- Pollutants removal - Recalcitrant organics
Classification code:461.8 Biotechnology - 461.9 Biology - 702.2 Fuel Cells - 714.1
Electron Tubes - 804.1 Organic Compounds
Numerical data indexing:Electrical_Resistance 5.24e+02Ohms to 1.23e+03Ohms, Mass_Density
8.50e-01kg/m3, Surface_Power_Density 1.51e-01W/m2, Surface_Power_Density 5.70e-02W/m2,
Time 2.16e+04s, Voltage 4.20e-01V to 4.70e-01V
DOI:10.13227/j.hjkx.201608126
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 197>
Accession number:20172703864548
Title:Influencing Mechanism of Calcium Peroxide Pre-treatment on Dewatering Performance
of Waste Activated Sludge
Authors:Bai, Run-Ying (1); Chen, Zhan (1, 2); Zhang, Wei-Jun (3); Wang, Dong-Sheng (2, 3)
Author affiliation:(1) School of Civil Engineering, Inner Mongolia University of
Technology, Hohhot; 010051, China; (2) State Key Laboratory of Environmental Aquatic
Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences,
Beijing; 100085, China; (3) School of Environmental Studies, China University of
Geosciences, Wuhan; 430074, China
Corresponding author:Zhang, Wei-Jun(zhwj_1986@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1151-1158
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The evolution of sludge filteration dewaterability, floc structure and
hydrolytic kinetics with calcium peroxide oxidation pre-treatment was investigated in
this study. The effect of sludge characteristics with combined process of ferrous ion and
calcium peroxide was deeply analyzed and the result suggested that the sludge dewatering
performance was improved first and then worsened after CaO<inf>2</inf>addition. When the
dosage was 20 mg·g<sup>-1</sup>, sludge reached its optimal dewaterability. At the
same time, sludge was effectively dissolved and the floc structure became loose and
broken with the increase of organic matters in the supernatant. Moreover, sludge
solubilization process followed the pseudo-zero-order kinetic equation well and the
reaction rate of sludge with CaO<inf>2</inf>treatment was 15.2 mg·L<sup>-
1</sup>·h<sup>-1</sup>. In addition, sludge floc lysis was enhanced by the
treatment of ferrous ion and calcium peroxide oxidation, whilst sludge dewaterability was
improved due to the reconstruction of sludge floc structure by the iron ions produced.
This study provided theoretical basis for application of calcium peroxide pre-treatment
and its combining technique in sludge treatment. © 2017, Science Press. All right
reserved.
Number of references:28
Main heading:Waste treatment
Controlled terms:Calcium - Dewatering - Integral equations - Ions - Iron - Metal ions -
Oxidation - Peroxides
Uncontrolled terms:Activated sludge - Calcium peroxides - Dewaterability - Ferrous ion -
Influencing mechanisms - Oxidation pre-treatment - Pseudo-zero-order kinetics - Waste
activated sludges
Classification code:452.4 Industrial Wastes Treatment and Disposal - 531.1 Metallurgy -
545.1 Iron - 549.2 Alkaline Earth Metals - 802.2 Chemical Reactions - 802.3 Chemical
Operations - 921.2 Calculus
DOI:10.13227/j.hjkx.201607056
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 198>
Accession number:20172703864525
Title:Seasonal Pollution Characteristics and Source Identification of Polycyclic Aromatic
Hydrocarbons and Organochlorine Pesticides in Surface Water of Baiyangdian Lake
Authors:Wang, Yi-Zhen (1, 2); Zhang, Jun (1); Zhou, Xu-Shen (1); Kong, Fan-Qing (1); Xu,
Ming-Xia (1)
Author affiliation:(1) Haihe River Water Environmental Monitoring Center, Tianjin;
300170, China; (2) Key Laboratory of Pollution Processes and Environmental Criteria,
Ministry of Education, Nankai University, Tianjin; 300071, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:964-978
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Seasonal variations of 17 polycyclic aromatic hydrocarbons (PAHs) and 15
persistent organochlorine pesticides (OCPs) were analyzed during spring and summer in
surface water from 12 sampling sites of Baiyangdian lake to elucidate their seasonal
pollution characteristics and sources. The results showed that total concentrations of
PAHs in surface water of Baiyangdian lake ranged from 35.38 to 88.06 ng·L<sup>-
1</sup>(46.57 ng·L<sup>-1</sup>in average) in spring and 25.64 to 301.41
ng·L<sup>-1</sup>(76.23 ng·L<sup>-1</sup>in average) in summer,
respectively, and total concentrations of OCPs ranged from 0.69 to 4.50
ng·L<sup>-1</sup>(1.77 ng·L<sup>-1</sup>in average) in spring and 0.11 to
3.20 ng·L<sup>-1</sup>(0.90 ng·L<sup>-1</sup>in average) in summer,
respectively. Seasonal pollution characteristics of PAHs in surface water during two
different seasons showed that the total concentration of PAHs was much higher in summer
than in spring at three sampling sites of Baiyangdian lake including Qiantang, Guancheng
and Anxin bridge, and the level of PAHs in spring was much higher than that in summer at
the other nine sites. While seasonal pollution characteristics of OCPs showed that the
total concentration of OCPs was much higher in summer than in spring in samples of
Guancheng sites, and the level of OCPs in spring was slightly higher than that in summer
in the rest of samples. From the perspective of spatial and temporal variations in the
composition patterns of PAHs and OCPs in surface water of Baiyangdian lake, PAHs were
predominated by 3-ring PAHs with 45.92% and 61.36% (52.60% in average) of total PAHs in
spring, while in summer Nap was the chief component of 2-ring PAHs in three sampling
sites including Qiantang, Guancheng and Anxin bridge with 84.91%, 91.04% and 78.10% of
the total, respectively, and 3-ring PAHs were primary pollutants in the other nine sites
with 37.14% to 53.90% (48.94% in average) of the total. Residues of HCHs and DDTs were
detected in different degrees and β-HCH was the main pollutant at all sampling sites
with 29.94% and 100% (59.87% in average) of total HCHs in spring, while β-HCH was
the predominant compounds at five sampling sites with 57.55% and 80.23% (61.98% in
average) in summer and α-HCHs and δ-HCH were abundant at other sampling
sites. Source analysis based on isomer ratios indicated that the main source of PAHs in
Baiyangdian lake originated from combustion sources, and additional sources for several
sampling sites could be petroleum processes. Ratios of HCH isomers and DDT congeners
confirmed that environmental historical residues and long range atmospheric transport
were the major sources of OCPs contamination in the study area. Compared with the water
quality standard of China and other countries or organizations, concentrations of PAHs
and OCPs in surface water of Baiyangdian lake did not exceed the target values of the
standard. However, the concentrations of α-HCH and p,p'-DDD in Anxin bridge and
Quantou sites exceeded the limit of human health ambient water quality criteria developed
by EPA, which reflected that α-HCH and p,p'-DDD would have a potential hazards risk
to the residents from Baiyangdian district. © 2017, Science Press. All right
reserved.
Number of references:85
Main heading:Lake pollution
Controlled terms:Aromatic compounds - Aromatic hydrocarbons - Aromatization - Atmospheric
movements - Environmental Protection Agency - Health hazards - Health risks -
Hydrocarbons - Isomers - Lakes - Organic pollutants - Pesticides - Pollution -
Polycyclic aromatic hydrocarbons - River pollution - Surface waters - Water pollution -
Water quality
Uncontrolled terms:Baiyangdian lakes - Long-range atmospheric transports - Organochlorine
pesticides - Persistent organochlorine pesticides - Polycyclic aromatic hydrocarbons
(PAHS) - Source apportionment - Spatial and temporal variation - Water quality standard
Classification code:443.1 Atmospheric Properties - 444.1 Surface Water - 445.2 Water
Analysis - 453 Water Pollution - 454.2 Environmental Impact and Protection - 461.7
Health Care - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial
Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds
Numerical data indexing:Mass_Density 1.77e-09kg/m3, Mass_Density 4.66e-08kg/m3,
Mass_Density 7.62e-08kg/m3, Mass_Density 9.00e-10kg/m3, Percentage 2.99e+01%, Percentage
4.59e+01%, Percentage 4.89e+01%, Percentage 5.26e+01%, Percentage 5.75e+01%, Percentage
5.99e+01%, Percentage 6.20e+01%, Percentage 7.81e+01%, Percentage 8.49e+01%, Percentage
9.10e+01%
DOI:10.13227/j.hjkx.201608150
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 199>
Accession number:20172703864540
Title:Effect of Wastewater Nitrogen Concentrations on Nitrogen Removal Ability of
Myriophyllum aquaticum
Authors:Ma, Yong-Fei (1); Yang, Xiao-Zhen (1); Zhao, Xiao-Hu (1); Hu, Cheng-Xiao (1, 3);
Tan, Qi-Ling (1); Sun, Xue-Cheng (1); Wu, Jin-Shui (2)
Author affiliation:(1) College of Resource and Environmental Science, Huazhong
Agricultural University, Wuhan; 430070, China; (2) Institute of Subtropical Agriculture,
Chinese Academy of Sciences, Changsha; 410000, China; (3) Hubei Provincial Engineering
Laboratory for New-type Fertilizer, Wuhan; 430070, China
Corresponding author:Hu, Cheng-Xiao(hucx@mail.hzau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1093-1101
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Myriophyllum aquaticum, which is an important plant for constructed wetlands,
has powerful purification ability for wastewater, however, the relationship between
nitrogen removal ability of Myriophyllum aquaticum and wastewater nitrogen concentrations
is still unclear. In this study, pot culture experiment was conducted to investigate the
effect of wastewater nitrogen levels on nitrogen removal ability of Myriophyllum
aquaticum. 7 nitrogen levels were set up as following: 2, 5, 10, 20, 100, 200, 400
mg·L<sup>-1</sup>. The results showed that when the wastewater nitrogen
concentration was not higher than 20 mg·L<sup>-1</sup>, Myriophyllum aquaticum
with 20 mg·L<sup>-1</sup>of nitrogen concentration grew best in the first 3 weeks;
the removal rates of total and ammonia nitrogen were nearly 100% after one week, while
the nitrate nitrogen concentrations were very low and varied little; the nitrogen
contents of Myriophyllum aquaticum had no significant change, the upper part nitrogen
content was higher than the underneath, Myriophyllum aquaticum could also remove nitrogen
from the sediment. When wastewater nitrogen concentrations were 100-400
mg·L<sup>-1</sup>, Myriophyllum aquaticum with 200 mg·L<sup>-1</sup>of
nitrogen concentration grew best from 4th to 5th week; the removal rates of total
nitrogen were 76.5%, 71.5% and 48.1% in the three treatments, and the removal rates of
ammonia nitrogen were 99.6%, 99.3% and 60.2% respectively, while the removal rates of
nitrate nitrogen were all about 50% and there was no significant difference among
treatments; the nitrogen contents of Myriophyllum aquaticum increased with nitrogen
levels, but the difference between upper part and underneath was not remarkable, showing
uniform distribution; nitrogen accumulations by Myriophyllum aquaticum and sediment
accounted for 27.9%-48.4% and 12.2%-24.4% of total nitrogen loss in wastewater.
Therefore, the nitrogen removal ability of Myriophyllum aquaticum should be inhibited by
higher wastewater nitrogen level, the ammonia nitrogen removal rate was significantly
higher than nitrate, the mechanism of Myriophyllum aquaticum nitrogen accumulation and
distribution should also be affected by wastewater nitrogen level, and further research
is needed. © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Nitrogen removal
Controlled terms:Ammonia - Grain (agricultural product) - Nitrates - Nitrogen -
Wastewater - Wastewater treatment - Wetlands
Uncontrolled terms:Ammonia nitrogen - Ammonia nitrogen removal - Myriophyllum aquaticum -
Nitrate nitrogen - Nitrogen accumulation - Nitrogen concentrations - Nitrogen removal
rates - Uniform distribution
Classification code:452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and
Disposal - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 821.4
Agricultural Products
Numerical data indexing:Mass_Density 1.00e-01kg/m3 to 4.00e-01kg/m3, Mass_Density 2.00e-
01kg/m3, Mass_Density 2.00e-02kg/m3, Mass_Density 4.00e-01kg/m3, Percentage 1.00e+02%,
Percentage 1.22e+01% to 2.44e+01%, Percentage 2.79e+01% to 4.84e+01%, Percentage 4.81e
+01%, Percentage 5.00e+01%, Percentage 6.02e+01%, Percentage 7.15e+01%, Percentage 7.65e
+01%, Percentage 9.93e+01%, Percentage 9.96e+01%
DOI:10.13227/j.hjkx.201606098
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 200>
Accession number:20172703864523
Title:Nitrification and Denitrification Rates in a Small Tributary, Nanhe River, of Three
Gorge Dam Reservoir During Water Collection and Release Events
Authors:Wang, Jing (1, 2); Liu, Hong-Jie (2); Lei, Yu (2); Xu, Jing (2); Song, Li-Yan (2,
3); Li, Yong (1)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Environmental Microbiology and Ecology Research Center,
Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences,
Chongqing; 400714, China; (3) Key Laboratory of Reservoir Aquatic Environment, Chongqing
Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing;
400714, China
Corresponding author:Song, Li-Yan(songliyan@cigit.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:946-953
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Three Gorge Dam Reservoir (TGDR) is a new forming ecosystem and its sediments
dynamics remains unknown. Investigation on the nitrification and denitrification dynamics
of sediments of TGDR during water collection and release events-anti-seasonal actions-is
critical for nitrogen management in TGDR. In this study, we sampled sediments in three
locations (upstream, center, and downstream along water flow) of South River, located in
a typical small tributary, Nanhe, in TGDR during 2015 water collection and release events
to characterize its physiochemical property and determine its nitrification and
denitrification rates using acetylene inhabitation method. The results showed that the
concentrations of physiochemical parameters of sediments (total carbon, total nitrogen,
nitrate, and ammonia) were significantly higher (P<0.05) in water collection event
than those in water release event, suggesting there were external materials (e.g., soil)
entering into TGDR. Furthermore, the nitrification rate of sediments in water collection
event [194.06 μmol·(m<sup>2</sup>·h)<sup>-1</sup>] was significantly
higher than that in water release event [16.52 μmol·(m<sup>2</sup>·h)
<sup>-1</sup>]. Sediments nitrification rate was positively correlated to the
physiochemical parameters. In contract, the denitrification rate of sediments was higher
in water release event [647.20 μmol·(m<sup>2</sup>·h)<sup>-1</sup>] than
that in water collection event [24.04 μmol·(m<sup>2</sup>·h)<sup>-
1</sup>). Accordingly, the denitrification rate of sediments was negatively correlated to
the physiochemical parameters. © 2017, Science Press. All right reserved.
Number of references:47
Main heading:Rivers
Controlled terms:Carbon - Denitrification - Nitrification - Nitrogen - Reservoirs (water)
- Sediments - Water resources
Uncontrolled terms:Dam reservoirs - Denitrification rate - Nitrification rates - Small
tributaries - Water collection - Water release
Classification code:441.2 Reservoirs - 444 Water Resources - 483 Soil Mechanics and
Foundations - 802.2 Chemical Reactions - 804 Chemical Products Generally
DOI:10.13227/j.hjkx.201606202
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 201>
Accession number:20172703864528
Title:Distribution Characteristics and Health Risk Assessment of Heavy Metals in Surface
Water Around Electroplating Factories
Authors:Yu, Cong-Cong (1); Zhao, Wei-Tuo (2); Gao, Xiao-Feng (3); Cheng, Sheng-Gao (1);
Huang, Ting (1); Yin, Yi-Meng (1); Zhao, Zhen-Li (1)
Author affiliation:(1) School of Environmental Studies, China University of Geosciences,
Wuhan; 430074, China; (2) The Center of Environmental Engineering and Assessment, No.203
Research Institute of Nuclear Industry, Xianyang; 712000, China; (3) Graduate School of
Engineering, University of Tokyo, Tokyo; 113-8656, Japan
Corresponding author:Zhao, Wei-Tuo(weituo2006@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:993-1001
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To investigate the distribution characteristics and the human health risks of
heavy metals in surface water samples, 30 samples were collected around electroplating
factories of Machong, Shatian, Humen, Changan and Dalingshan towns in Dongguan city, 8
heavy metals (As, Cd, Cr, Cu, Hg, Ni, Pb and Zn) contents were measured and analyzed by
using multivariate statistical analysis method and human health risk assessment model.
The results showed that the maximum concentrations of Cr, Pb and the average
concentration of Hg exceeded Environmental Quality Standards for Surface Water (GB 3838-
2002, Grade III), the concentrations of Cr, Cu, Hg, Ni, Zn and Pb during rainy season
were all higher than that those during dry season. Multivariate statistical analysis
indicated that Cd, Cr, Cu, Ni and Zn mainly originated from the contaminated
electroplating factories, Pb and Hg were mainly affected by the traffic sources, and As
was significantly correlated with natural sources. Health risk assessment result of
surface water indicated that heavy metal pollution would lead to high health risks
especially for children, and the health risks of heavy metals through drinking pathway
were 2-3 orders of magnitude higher than the values caused by dermal contact pathway.
Moreover, carcinogenic risks caused by Cr and As were higher than the maximum allowance
levels (5×10<sup>-5</sup>a<sup>-1</sup>), and non-carcinogenic risks of the heavy
metals (10<sup>-10</sup>-10<sup>-7</sup>a<sup>-1</sup>) decreased in the order of
Pb>Ni>Cu>Hg>Zn, which were 4-5 orders of magnitude lower than the maximum
allowance levels. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Risk assessment
Controlled terms:Cadmium - Copper - Electron emission - Electroplating - Health - Health
risks - Heavy metals - Lead - Metal analysis - Multivariant analysis - Nickel - Potable
water - River pollution - Statistical methods - Surface waters - Water pollution - Zinc
Uncontrolled terms:Average concentration - Distribution characteristics - Environmental
quality standards - Heavy metal pollution - Human health risk assessment - Maximum
concentrations - Multivariate statistical analysis - Orders of magnitude
Classification code:444 Water Resources - 444.1 Surface Water - 453 Water Pollution -
461.6 Medicine and Pharmacology - 461.7 Health Care - 531 Metallurgy and Metallography
- 539.3.1 Electroplating - 544.1 Copper - 546.1 Lead and Alloys - 546.3 Zinc and
Alloys - 548.1 Nickel - 549.3 Nonferrous Metals and Alloys excluding Alkali and
Alkaline Earth Metals - 914.1 Accidents and Accident Prevention - 922 Statistical
Methods - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201607159
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 202>
Accession number:20172703864549
Title:Treatment Effects of Earthworm Constructed Wetlands in Different Working Conditions
Authors:Dong, Meng-Ke (1); Li, Huai-Zheng (1); Xu, Yi-Xiao (1)
Author affiliation:(1) College of Environmental Science and Engineering, Tongji
University, Shanghai; 200092, China
Corresponding author:Li, Huai-Zheng(lihz@tongji.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1159-1166
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The feasibility of a new sludge treatment technology of earthworm constructed
wetlands was tested by adding earthworm into the traditional sludge dying reed beds. The
dewatering and stabilization effects of the upper layer sludge were tested under
different sludge loading rates of 48, 65, 80 kg·(m<sup>2</sup>·a)<sup>-
1</sup>, different earthworm stocking densities of 0, 0.43, 0.54, 0.65 kg·m<sup>-
2</sup>and different sludge loading frequencies. The results indicated that it was
feasible to provide a shelter for earthworm during the loading period by setting a damper
with a buried depth of 10 mm. The addition of earthworm could effectively improve the
dewatering and stabilization effects of earthworm constructed wetlands, by lowering the
DHA and decreasing the moisture content and VS of sludge by 15% and 10% respectively. The
stabilization effects of earthworm constructed wetlands reached the best under the
stocking density of 0.65 kg·m<sup>-2</sup>. With the increase of sludge loading
rate and decrease of loading frequency, the running efficiency of earthworm constructed
wetlands would be worse. © 2017, Science Press. All right reserved.
Number of references:23
Main heading:Wetlands
Controlled terms:Dewatering - Stabilization
Uncontrolled terms:Constructed wetlands - Earthworm - Reed bed - Sludge dewatering -
Sludge stabilization
Classification code:802.3 Chemical Operations
Numerical data indexing:Percentage 1.00e+01%, Percentage 1.50e+01%, Size 1.00e-02m
DOI:10.13227/j.hjkx.201609212
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 203>
Accession number:20172703864546
Title:Identification and Influence of Quorum Sensing on Anaerobic Ammonium Oxidation
Process
Authors:Chen, Shu-Han (1); Li, An-Jie (1); Wang, Yue-Xing (2); Wu, Ling-Juan (1)
Author affiliation:(1) Key Laboratory of Water and Sediment Sciences, School of
Environment, Beijing Normal University, Beijing; 100875, China; (2) Shenzhen Water Group
Co., Ltd., Shenzhen; 518001, China
Corresponding author:Li, An-Jie(liaj@bnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1137-1143
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Anaerobic ammonium oxidation (ANAMMOX), an innovative nitrogen removal
technology, has good prospects for applications. However, ANAMMOX bacteria grow slowly
and are hardly accumulated in bioreactors. In this study, a UASB reactor inoculated with
sludge from landfill leachate treatment plant was used for the start-up of ANAMMOX
process. Besides, exogenous quorum sensing signals (DSF and AHL) were added to improve
the adhesion of ANAMMOX sludge. The results showed that the UASB successfully started the
ANAMMOX process within 150 days of operation. The total nitrogen removal rate reached 80%
and the proportion of ANAMMOX bacteria rose to 20%. There was a low concentration of AHLs
signal molecules in the ANAMMOX sludge. If the β-position substituent group of AHL
added was a carbonyl group (including 3-oxo-C<inf>6</inf>-HSL, 3-oxo-C<inf>8</inf>-HSL,
3-oxo-C<inf>10</inf>-HSL and 3-oxo-C<inf>12</inf>-HSL), the adhesion growth ability of
the ANAMMOX sludge could be improved. In the case of dosing with AHL molecules without
β-position substituent groups, only C<inf>6</inf>-HSL and C<inf>12</inf>-HSL could
promote the adhesion of ANAMMOX sludge. The additions of C<inf>8</inf>-HSL,
C<inf>10</inf>-HSL and DSF all had negative effects on the adhesion of ANAMMOX sludge.
© 2017, Science Press. All right reserved.
Number of references:25
Main heading:Nitrogen removal
Controlled terms:Adhesion - Bacteria - Leachate treatment - Molecules - Nitrogen -
Oxidation - Wastewater treatment
Uncontrolled terms:Anaerobic ammonium oxidation - Anammox bacteria - Landfill leachate
treatment - Low concentrations - Microbial community structures - N-Acyl Homoserine
lactones - Quorum-sensing - Total nitrogen removal
Classification code:452.4 Industrial Wastes Treatment and Disposal - 802.2 Chemical
Reactions - 804 Chemical Products Generally - 931.3 Atomic and Molecular Physics - 951
Materials Science
Numerical data indexing:Age 4.11e-01yr, Percentage 2.00e+01%, Percentage 8.00e+01%
DOI:10.13227/j.hjkx.201607027
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 204>
Accession number:20172703864543
Title:Quick Start-up of Anaerobic Ammonium Oxidation Process
Authors:Lü, Gang (1); Xu, Le-Zhong (1, 2, 3); Shen, Yao-Liang (1, 2, 3); Wu, Peng
(1, 2, 3); Zhang, Ting (1); Cheng, Chao-Yang (1)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Jiangsu Collaborative Innovation
Center of Technology and Material of Water Treatment, Suzhou; 215009, China; (3) Jiangsu
Key Laboratory of Environmental Science and Engineering, Suzhou; 215009, China
Corresponding author:Xu, Le-Zhong(kgre505@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:3
Issue date:March 15, 2017
Publication year:2017
Pages:1116-1121
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to study the quick start-up process of anaerobic ammonium oxidation
(ANAMMOX), two types of reactors with different hydraclic flow state inoculated with
aerobic nitrifying sludge were investigated, the membrane bioreactor (MBR) and anaerobic
baffled reactor (ABR), respectively. The result showed that both reactors successfully
started up ANAMMOX process. The start-up period of the MBR (90 d) was 20% shorter than
the ABR (111 d). During the stable operation, the average nitrogen (NH<inf>4</inf><sup>
+</sup>-N+NO<inf>2</inf><sup>-</sup>-N) removal capacity of 0.098 kg·
(m<sup>3</sup>·d)<sup>-1</sup>in the MBR was also higher than that of 0.089
kg·(m<sup>3</sup>·d)<sup>-1</sup>in the ABR. In addition, the differences
of sludge morphology were obvious in the two reactors; flocculent sludge was developed in
the MBR while ANAMMOX granular sludge was mainly formed in the first compartment of the
ABR. Moreover, the quantitative relationship analysis between NH<inf>4</inf><sup>
+</sup>-N, NO<inf>2</inf><sup>-</sup>-N and NO<inf>3</inf><sup>-</sup>-N showed that the
MBR system contained more kinds of bacteria with nitrogen removal function, compared to
the ABR, and it was therefore more conducive to the removal of nitrogen. MBR exhibited a
more excellent performance for ANAMMOX start-up. © 2017, Science Press. All right
reserved.
Number of references:28
Main heading:Nitrogen removal
Controlled terms:Bioreactors - Nitrogen - Nitrogen compounds - Nitrogen oxides -
Oxidation - Wastewater treatment
Uncontrolled terms:Anaerobic ammonium oxidation - Anaerobic baffled reactor - Flocculent
sludge - Membrane bio reactor (MBR) - Quick start-up - Relationship analysis - Removal
capacity - Sludge morphology
Classification code:452.4 Industrial Wastes Treatment and Disposal - 802.1 Chemical
Plants and Equipment - 802.2 Chemical Reactions - 804 Chemical Products Generally -
804.2 Inorganic Compounds
Numerical data indexing:Percentage 2.00e+01%
DOI:10.13227/j.hjkx.201609051
<RECORD 205>
Accession number:20173704160703
Title:Characteristics and Mechanism of Copper Adsorption from Aqueous Solutions on
Biochar Produced from Sawdust and Apple Branch
Authors:Wang, Tong-Tong (1); Ma, Jiang-Bo (1); Qu, Dong (1); Zhang, Xiao-Yuan (1); Zheng,
Ji-Yong (1, 2); Zhang, Xing-Chang (1, 2)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) State Key Laboratory of Soil Erosion and Dryland
Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy
of Sciences and Ministry of Water Resource, Yangling; 712100, China
Corresponding author:Zheng, Ji-Yong(zhjy@ms.iswc.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2161-2171
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to utilize the waste biomass resources efficiently, two raw materials
of sawdust and apple branch were selected to produce biochars at 450℃ by oxygen-
limited pyrolysis, and the adsorptions of Cu<sup>2+</sup>in aqueous solutions were
evaluated. The effects of initial Cu<sup>2+</sup>concentration and contact time in batch
sorption experiments were investigated by the four kinds of isothermal adsorption models
(Langmuir, Freundlich, Temkim, D-R model) and the four kinds of adsorption kinetics
models (Pseudo first-order, Pseudo second-order, Elovich model, Intraparticle diffusion
model). The influencing factors of adsorption characteristics about sawdust biochar (JB)
and apple branch biochar (PB) were discussed by characterizing their elemental
composition, functional groups, surface area, surface morphology and scanning electron
microscope. The results showed that: (1)The adsorption equilibrium of PB and JB was
reached in three hours and six hours, respectively, and the maximum adsorption capacity
of PB and JB reached 15.85 mg·g<sup>-1</sup>and 17.44 mg·g<sup>-1</sup>,
respectively. Compared with other studies, these biochars showed higher
Cu<sup>2+</sup>adsorption performance. (2)The adsorption kinetics was best fitted by the
pseudo-second order model, while the isothermal adsorption was best described by Langmuir
isotherms. This indicated that the beneficial adsorption process via monolayer was
affected by intraparticle diffusion, surface adsorption and liquid film diffusion. (3)The
adsorption mechanism for Cu<sup>2+</sup>is a complex interaction of physical and chemical
factors. Electrostatic interaction of physical adsorption is mainly adsorption mechanism,
Chemical adsorption mechanism includes generally ligand exchange (phenolic hydroxyl)/ion
exchange (H<sup>+</sup>) and cationic-π. It was demonstrated that JB and PB could be
considered as promising materials to immobilize heavy metals in contaminated water or
soil. © 2017, Science Press. All right reserved.
Number of references:45
Main heading:Adsorption
Controlled terms:Adsorption isotherms - Copper - Diffusion - Dyes - Fruits - Heavy metals
- Isotherms - Liquid films - Mechanisms - Sawdust - Scanning electron microscopy - Soil
pollution - Solutions - Water pollution
Uncontrolled terms:Adsorption characteristic - Adsorption performance - Apple branch -
Bio chars - Characteristics and mechanisms - Intra-particle diffusion - Intraparticle
diffusion models - Pseudo-second order model
Classification code:453 Water Pollution - 483.1 Soils and Soil Mechanics - 531
Metallurgy and Metallography - 544.1 Copper - 601.3 Mechanisms - 802.3 Chemical
Operations - 803 Chemical Agents and Basic Industrial Chemicals - 811.2 Wood and Wood
Products - 821.4 Agricultural Products
DOI:10.13227/j.hjkx.201610124
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 206>
Accession number:20173704160938
Title:Emission Characteristics and Ozone Formation Potential of VOCs from a Municipal
Solid Waste Composting Plant
Authors:Shao, Zhu-Ze (1, 2); Zheng, Guo-Di (1, 2); Wang, Yuan-Gang (3); Gao, Ding (1);
Zhu, Yan-Li (1, 2); Chen, Tong-Bin (1, 2); Nie, Er-Qi (1, 2)
Author affiliation:(1) Center for Environmental Remediation, Institute of Geographic
Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing; 100101,
China; (2) College of Resources and Environment, University of Chinese Academy of
Sciences, Beijing; 100049, China; (3) State Environmental Protection Key Laboratory of
Odor Control, Tianjin; 300191, China
Corresponding author:Zheng, Guo-Di(zhenggd@igsnrr.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1783-1791
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In Beijing, the chemical composition and component concentrations of volatile
organic compounds (VOCs) were investigated during the municipal solid waste composting
process using a portable gas chromatograph coupled with a mass spectrometer. The
contributions of VOCs to the ozone formation potential were computed using the maximum
incremental reactivity (MIR) scale and the propylene-equivalent concentration scale. The
results showed that the concentrations of waste discharge in the sorting room, the first
fermentation workshop, the second fermentation workshop, the compost product workshop,
and the plant boundary were 10 302.1, 15 484.1, 929.9, 4 693.6 and 370.4
μg·m<sup>-3</sup>, respectively. The main VOCs of the municipal solid waste
composting plant were ethanol, limonene, and acetone. The propylene-equivalent
concentrations of waste discharge in the sorting room, the first fermentation workshop,
the second fermentation workshop, the compost product workshop, and the plant boundary
were 25 875.7, 4 087.9, 378.0, 747.7 and 296.8 μg·m<sup>-3</sup>, whereas the
O<inf>3</inf>formation potentials computed using the MIR scale were 26 979.3, 21 168.3, 1
469.3, 6 439.6 and 455.8 μg·m<sup>-3</sup>. Reducing pollution by controlling
the VOCs emission of waste discharge in the sorting room and the first fermentation
workshop is important and can decrease the ozone formation potential. Given the accuracy
and accessibility of the method, the MIR scale is more suitable for calculating the ozone
formation potential of VOCs emitted from the municipal solid waste composting plant.
© 2017, Science Press. All right reserved.
Number of references:30
Main heading:Municipal solid waste
Controlled terms:Acetone - Chemical compounds - Composting - Fermentation - Organic
compounds - Ozone - Propylene - Solid wastes - Volatile organic compounds - Waste
treatment
Uncontrolled terms:Chemical compositions - Component concentration - Emission
characteristics - Equivalent concentrations - Formation potential - Maximum incremental
reactivities - Ozone formation potentials - Portable gas chromatographs
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal -
452.4 Industrial Wastes Treatment and Disposal - 804 Chemical Products Generally -
804.1 Organic Compounds
DOI:10.13227/j.hjkx.201609210
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 207>
Accession number:20173704160956
Title:Adsorption of Phosphate from Aqueous Solution on Hydrous Zirconium Oxides
Precipitated at Different pH Values
Authors:Wang, Xing-Xing (1); Lin, Jian-Wei (1); Zhan, Yan-Hui (1); Zhang, Zhi-Bin (2);
Xing, Yun-Qing (1); Jiang, Bo-Hui (1); Chu, Ming (1)
Author affiliation:(1) College of Marine Science, Shanghai Ocean University, Shanghai;
201306, China; (2) College of Municipal and Environmental Engineering, Shandong Jianzhu
University, Ji'nan; 250101, China
Corresponding author:Lin, Jian-Wei(jwlin@shou.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1936-1946
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this study, hydrous zirconium oxide (HZO) samples precipitated at different
pH values were prepared, characterized and used as adsorbents to remove phosphate from
aqueous solution. The adsorption characteristics and mechanisms of phosphate on these HZO
samples were investigated. The results showed that the presence of Na<sup>+</sup>slightly
enhanced the adsorption of phosphate on HZO samples prepared at precipitation pH of 4.8
and 8.0, but it greatly enhanced the adsorption of phosphate on HZO prepared at
precipitation pH of 10.6. The presence of Ca<sup>2+</sup>slightly enhanced the adsorption
of phosphate on HZO prepared at precipitation pH of 4.8, but it significantly enhanced
the adsorption of phosphate on HZO samples prepared at precipitation pH of 8.0 and 10.6.
The presence of HCO<inf>3</inf><sup>-</sup>or SO<inf>4</inf><sup>2-</sup>inhibited
phosphate adsorption onto HZO, and the inhibitory effect of these anions on phosphate
adsorption onto HZO precipitated at pH 4.8 was much higher than that on phosphate
adsorption onto HZO samples precipitated at pH 8.0 and 10.6. The phosphate adsorption was
dependent upon solution pH, and it decreased with increasing solution pH. The Langmuir,
Freundlich and Dubinin-Redushckevich (D-R) isotherm models fitted well to the adsorption
equilibrium data of phosphate on HZO samples precipitated at pH 4.8, 8.0 and 10.6. In the
presence of Na<sup>+</sup>but in the absence of Ca<sup>2+</sup>, there was no significant
difference of the maximum phosphate monolayer adsorption capacity derived from the
Langmuir isotherm model among HZO samples prepared at precipitation pH of 4.8, 8.0 and
10.6. In the presence of Ca<sup>2+</sup>, the maximum phosphate monolayer adsorption
capacity derived from the Langmuir isotherm model for HZO precipitated at pH 8.0 or 10.6
was much higher than that for HZO precipitated at pH 4.8. The mechanism for phosphate
adsorption onto HZO mainly obeyed the inner-sphere complexing mechanism. The surface
chloride and hydroxyl groups played the key role in the adsorption of phosphate on HZO
precipitated at pH 4.8 or 8.0, while only the surface hydroxyl groups played the key role
in the adsorption of phosphate on HZO precipitated at pH 10.6. Results of this work
demonstrated that the HZO precipitated at pH 8.0 or 10.6 was a more promising adsorbent
for removing phosphate from wastewater than the HZO precipitated at pH 4.8. © 2017,
Science Press. All right reserved.
Number of references:38
Main heading:Adsorption
Controlled terms:Adsorbents - Adsorption isotherms - Calcium - Isotherms - Monolayers -
Oxides - pH - Phosphates - Sodium - Solutions - Zirconia
Uncontrolled terms:Adsorption characteristic - Adsorption equilibria - Langmuir isotherm
models - Ligand exchanges - Monolayer adsorption - pH value - Phosphate adsorption -
Surface hydroxyl groups
Classification code:549.1 Alkali Metals - 549.2 Alkaline Earth Metals - 801.1
Chemistry, General - 802.3 Chemical Operations - 803 Chemical Agents and Basic
Industrial Chemicals - 804 Chemical Products Generally - 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201611072
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 208>
Accession number:20173704160932
Title:Estimating the Secondary Organic Aerosol Concentration and Source Apportionment
During the Summer and Winter in the Nanjing Industrial District
Authors:Liu, Jing-Da (1); An, Jun-Lin (1); Zhang, Yu-Xin (1); Shi, Yuan-Zhe (1); Lin, Xu
(2)
Author affiliation:(1) Collaborative Innovation Center on Forecast and Evaluation of
Meterological Disasters, Key Laboratory for Aerosol-Cloud-Precipitation of China
Meteorological Administration, Nanjing University of Information Science and Technology,
Nanjing; 210044, China; (2) Hangzhou Environmental Monitoring Center, Hangzhou; 310007,
China
Corresponding author:An, Jun-Lin(junlinan@nuist.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1733-1742
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Volatile organic compounds (VOCs) were determined by GC5000, an automatic on-
line Gas Chromatography-Flame Ionization Detector. Elemental carbon (EC) and organic
carbon (OC) were determined by the thermal/optical method using DRI-2001A during the
periods of June 15th-July 15th 2015 and December 16th 2015 - January 15th 2016. The
concentration of secondary organic aerosol(SOA) was estimated by fractional aerosol
coefficients (FAC) and EC tracer method. The source apportionment relied on the positive
matrix factorization model (PMF). There were several conclusions: First, aromatic
hydrocarbon was the main substance causing the SOA pollution in the Nanjing Industrial
district, the contributions of aromatic hydrocarbon to SOA during summer and winter were
80.39% and 94.63%, respectively. The main contributers were benzene, toluene,
ethylbenzene, m,p-xylene and o-xylene (BTEX). In the summer, SOA concentration ranged
from 5.84-20.88 μg·m<sup>-3</sup>with an average of 12.15 μg·m<sup>-
3</sup>and in the winter ranged from 2.17-17.73 μg·m<sup>-3</sup>in which the
average concentration was 6.91 μg·m<sup>-3</sup>. Secondly, SOA concentration
decreased when wind and precipitation increased. By using the PMF model, a total of
7sources of SOA were determined in summer and 6 were determined in winter. There were 3
main sources in summer, including painting, petroleum processing and petrochemical
industry, and the contributions to SOA were 0.65 μg·m<sup>-3</sup>, 0.21
μg·m<sup>-3</sup>, 0.18 μg·m<sup>-3</sup>, respectively. In winter,
the most important SOA pollution was from painting, in which the contribution was 0.94
μg·m<sup>-3</sup>. © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Organic carbon
Controlled terms:Aerosols - Aromatic compounds - Aromatic hydrocarbons - Factorization -
Gas chromatography - Hydrocarbon refining - Hydrocarbons - Ionization of gases - Matrix
algebra - Organic compounds - Petroleum industry - Pollution - Radioactive tracers -
Volatile organic compounds - Xylene
Uncontrolled terms:Average concentration - Ec tracer methods - Fractional aerosol
coefficients(FAC) - Gas chromatography-flame ionization detectors - Petrochemical
industry - Positive matrix factorization models - Secondary organic aerosols - Source
apportionment
Classification code:802.2 Chemical Reactions - 802.3 Chemical Operations - 803
Chemical Agents and Basic Industrial Chemicals - 804.1 Organic Compounds - 921
Mathematics - 921.1 Algebra
Numerical data indexing:Percentage 8.04e+01%, Percentage 9.46e+01%
DOI:10.13227/j.hjkx.201610167
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 209>
Accession number:20173704160934
Title:Concentration Characteristics and Influencing Factors of Atmospheric Particulate
Matters in Spring on Weizhou Island, Beihai, Guangxi Province
Authors:Gao, Yuan-Guan (1, 2); Zhang, Kai (2); Wang, Ti-Jian (3); Chen, Zhi-Ming (4);
Geng, Hong (1); Meng, Fan (2)
Author affiliation:(1) Institute of Environmental Sciences, Shanxi University, Taiyuan;
030006, China; (2) State Key Laboratory of Environmental Criteria and Risk Assessment,
Chinese Research Academy of Environmental Sciences, Beijing; 100012, China; (3) School of
Atmospheric Sciences, Nanjing University, Nanjing; 210093, China; (4) Scientific Research
Academy of Guangxi Environmental Protection, Nanning; 530022, China
Corresponding author:Zhang, Kai(zhangkai@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1753-1759
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To investigate the characteristics of atmospheric environment and possible
cross- boundary transports in the north of South China Sea, field experiments were
carried out on Weizhou Island from March to April, 2015. The concentration and particle
size distributions of atmospheric particulate matters were measured, and the
concentration characteristics and the source of particulate matters were analyzed in
combination with meteorological factors and back trajectory analysis. The results showed
that: the PM<inf>1</inf>, PM<inf>2.5</inf>and PM<inf>10</inf>concentrations were
(21±12) μg·m<sup>-3</sup>, (35±19) μg·m<sup>-3</sup>,
(43±20) μg·m<sup>-3</sup>, respectively. The mass concentrations of
PM<inf>1</inf>, PM<inf>1-2.5</inf>and PM<inf>2.5-10</inf>accounted for 50%, 32%,18% of
PM<inf>10</inf>mass concentrations, respectively. Besides, the number concentrations of
particulate matters with particle sizes of 0.5-1 μm, 1-2.5 μm and 2.5-20 μm
accounted for 93.5%, 6.1% and 0.4% of the total number concentration, respectively. The
particle number concentration was negatively correlated with visibility and air pressure.
Backward trajectory analysis showed that air masses from southwest direction accounted
for the highest frequency effect (45.9%), in this case, particulate matters with particle
sizes of 0.5-1 μm, 1-2.5 μm and 2.5 μm had the minimum number concentration and
NO had the highest concentration. Air masses from the east direction accounted for 34.1%
of the frequency effect with the minimum SO<inf>2</inf>concentration and the highest
O<inf>3</inf>concentration. The concentrations of NO<inf>2</inf>, NO<inf>x</inf>,
O<inf>3</inf>and CO were the minimum when air masses came from the south direction which
accounted for 12.5% of the frequency effect. Air masses from the northeast had the lowest
frequency effect (7.4%), but had the maximum particle number concentration, mass
concentration and the concentration of gaseous pollutants except O<inf>3</inf>and NO.
Atmospheric fine particles and gaseous pollutants on Weizhou island were affected by
transport from Chinese mainland and Southeast Asia. Pollutants from Chinese mainland were
mainly from industrial sources, while pollutants from Southeast Asia were mainly from the
shipping business inside and outside ports. © 2017, Science Press. All right
reserved.
Number of references:35
Main heading:Particles (particulate matter)
Controlled terms:Atmospheric movements - Cluster analysis - Fog - Nitrogen compounds -
Nitrogen oxides - Particle size - Particle size analysis - Pollution - Size distribution
- Trajectories
Uncontrolled terms:Atmospheric fine particles - Atmospheric particulate matter - Backward
trajectory - Backward trajectory analysis - Number concentration - Particle number
concentration - Total number concentrations - Weizhou island
Classification code:443.1 Atmospheric Properties - 723 Computer Software, Data Handling
and Applications - 804.2 Inorganic Compounds - 922.2 Mathematical Statistics - 951
Materials Science
Numerical data indexing:Percentage 1.25e+01%, Percentage 3.20e+01%, Percentage 3.41e+01%,
Percentage 4.00e-01%, Percentage 4.59e+01%, Percentage 5.00e+01%, Percentage 6.10e+00%,
Percentage 7.40e+00%, Percentage 9.35e+01%, Size 1.00e-06m to 2.50e-06m, Size 2.50e-06m
to 2.00e-05m, Size 2.50e-06m, Size 5.00e-07m to 1.00e-06m
DOI:10.13227/j.hjkx.201609104
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 210>
Accession number:20173704160705
Title:Performance and Mechanism Study of Visible Light-driven
C<inf>3</inf>N<inf>4</inf>/BiOBr Composite Photocatalyst
Authors:Bao, Yue (1); Zhou, Min-Yun (2); Zou, Jun-Hua (1); Shi, Yu-Bin (1); Wan, Xian-Kai
(1); Shi, Hui-Xiang (1)
Author affiliation:(1) Department of Environmental Engineering, Zhejiang University,
Hangzhou; 310058, China; (2) Zhejiang Huanke Environment Consultancy Company, Hangzhou;
310000, China
Corresponding author:Shi, Hui-Xiang(huixiang_shi@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2182-2190
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Efficient visible light-driven C<inf>3</inf>N<inf>4</inf>/BiOBr composite
photocatalysts were prepared via a facile hydrothermal method and characterized by X-ray
diffraction, Fourier transform infrared, scanning electron microscopy, UV-Vis diffuse
reflectance spectra and photoluminescence spectra for the phase composition and optical
property. Taking rhodamine B (RhB) as the target pollutant, the photocatalytic activity
and stability of photocatalysts were studied under visible light irradiation.
Furthermore, the mechanism in the process of photocatalytic degradation was discussed by
electron spin resonance spectroscopy analysis and the trapping experiment of generated
radicals. The results indicated that C<inf>3</inf>N<inf>4</inf>/BiOBr composite
photocatalysts had excellent crystallization performance. Composited by
C<inf>3</inf>N<inf>4</inf>, BiOBr exhibited considerably higher photocatalytic activity
by reducing the rate of electron-hole recombination. Among prepared composites with
various C<inf>3</inf>N<inf>4</inf>contents, 15% C<inf>3</inf>N<inf>4</inf>/BiOBr
exhibited the best efficiency for the degradation of RhB. After irradiation for 18
minutes, the degradation rate of RhB was 100%, which was 1.5 times higher than that using
pure BiOBr. The results also suggested that holes and ·O<inf>2</inf><sup>-
</sup>were the main reactive species in the photocatalytic process for the RhB
degradation, and holes played the leading role. © 2017, Science Press. All right
reserved.
Number of references:35
Main heading:Electron spin resonance spectroscopy
Controlled terms:Complexation - Degradation - Irradiation - Light - Magnetic moments -
Mechanisms - Optical properties - Photocatalysis - Photocatalysts - Photodegradation -
Photoluminescence - Scanning electron microscopy - X ray diffraction
Uncontrolled terms:BiOBr - C3N4 - Electron-hole recombination - Fourier transform infra
reds - Photo catalytic degradation - Rhodamine B - UV-vis diffuse reflectance spectra -
Visible light driven photocatalysts
Classification code:601.3 Mechanisms - 701.2 Magnetism: Basic Concepts and Phenomena -
741.1 Light/Optics - 801 Chemistry - 802.2 Chemical Reactions - 803 Chemical Agents
and Basic Industrial Chemicals
Numerical data indexing:Percentage 1.00e+02%, Time 1.08e+03s
DOI:10.13227/j.hjkx.201606158
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 211>
Accession number:20173704160966
Title:Analysis on Performance and Microbial Community Dynamics of a Strengthen
Circulation Anaerobic Reactor Treating Municipal Wastewater
Authors:Yang, Bo (1, 2); Xu, Hui (1, 2); Feng, Xiu-Ping (1, 2); Li, Fang (1, 2); Tian,
Qing (1, 2); Ma, Chun-Yan (1, 2)
Author affiliation:(1) State Environmental Protection Engineering Center for Pollution
Treatment and Control in Textile Industry, Shanghai; 201620, China; (2) College of
Environmental Science and Engineering, Donghua University, Shanghai; 201620, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2021-2029
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A strengthen circulation anaerobic reactor (SCAR) treating artificial municipal
wastewater was investigated under different volumetric loading rate(VLR) and the reactor
performance, characteristics of granular sludge and microbial community structure were
also tested in this experiment. The results of the experiment demonstrated that the
hydraulic retention time (HRT) of 6h could be regarded as the key parameter dominating
the efficient operation of SCAR reactor, in which condition the COD removal efficiency
was above 75%. The coenzyme F<inf>420</inf>and the maximum specific methanogenic activity
(SMA) of granular sludge increased with increasing VLR, and the EPS contents, especially
TB-EPS in the granule sludge also increased obviously. Consistently, the characteristics
of anaerobic granular sludge and the removal efficiency of the reactor were influenced by
both sludge loading and HRT. The microbial community structure and its spatial
distribution in the reactor were also affected by sludge loading, while the relative
abundance of the microbial community with different metabolic characteristics in
different spatial positions changed with the adjustment of the sludge loading. ©
2017, Science Press. All right reserved.
Number of references:34
Main heading:Wastewater treatment
Controlled terms:Efficiency - Granular materials - Microorganisms - Particle size -
Particle size analysis - Size distribution - Social sciences
Uncontrolled terms:Anaerobic granular sludge - Anaerobic reactor - Metabolic
characteristics - Microbial communities - Microbial community dynamics - Microbial
community structures - Municipal wastewaters - Specific methanogenic activity
Classification code:452.4 Industrial Wastes Treatment and Disposal - 461.9 Biology -
913.1 Production Engineering - 922.2 Mathematical Statistics - 951 Materials Science -
971 Social Sciences
Numerical data indexing:Percentage 7.50e+01%, Time 2.16e+04s
DOI:10.13227/j.hjkx.201609024
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 212>
Accession number:20173704160980
Title:Enrichment Characteristics of Heavy Metals in Particulate Organic Matter of Purple
Paddy Soil
Authors:Li, Qiu-Yan (1, 2); Zhao, Xiu-Lan (1, 2)
Author affiliation:(1) Key Laboratory of Eco-environments in Three Gorges Reservoir
Region, Ministry of Education, College of Resources and Environment, Southwest
University, Chongqing; 400715, China; (2) Chongqing Key Laboratory of Agricultural
Resources and Environment, Chongqing; 400716, China
Corresponding author:Zhao, Xiu-Lan(zxl@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2146-2153
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Twenty purple paddy soil samples were collected from the Prefectures of Hechuan
and Tongliang, Chongqing, and sieved into particulate organic matter (0.053-2 mm, POM),
sand fraction (0.053-2 mm) and fine soil fraction (<0.053 mm). By comparing the
concentration and distribution of soil organic carbon (SOC) and heavy metals among
different components, the enrichment characteristics of POM for heavy metals (Cu, Zn, Pb
and Zn) and its relationship with soil properties such as pH, CEC, clay content
(<0.002 mm) and SOC were investigated. The result showed that the contents of POM
fraction in purple paddy soils ranged from 7.31 to 44.76 g·kg<sup>-1</sup>, with
an average level of 19.20 g·kg<sup>-1</sup>, while the carbon contents ranged from
96.61 to 263.17 g·kg<sup>-1</sup>, which were significantly higher than those of
their original soils and other two fractions. The contribution rates of organic carbon by
POM to the total organic carbon of soils ranged from 8.63% to 48.62%, which accounted for
a large pool of organic carbon. The average enrichment factors of POM fraction to Cu, Zn,
Pb and Cd were 3.35, 1.14, 2.88 and 2.14, respectively. Compared with sand fraction and
fine soil fraction, POM fraction showed a significantly higher contribution rate to heavy
metals, which were 6.02%, 2.22%, 5.24% and 3.21%. In addition, the enrichment ability and
contribution rate of POM to Cu and Pb were obviously greater than those of Zn and Cd.
There was a significant positive correlation between content of POM fraction and soil
properties such as SOC, pH, CEC and clay content, in which SOC was the key factor. The
POM-C content and total amount were significantly correlated with SOC and clay content.
The pH value, SOC and POM-C amount had a significant or extremely significant correlation
with the amount of heavy metals in POM, in which SOC was the most critical one. Comparing
with other heavy metals, the amount of zinc in POM had the highest regression coefficient
and the closest relationship with soil properties. © 2017, Science Press. All right
reserved.
Number of references:37
Main heading:Copper
Controlled terms:Biogeochemistry - Biological materials - Carbon - Heavy metals - Lead -
Organic carbon - Organic compounds - Soils - Supply chains - Zinc
Uncontrolled terms:Enrichment characteristics - Heavy metals in particulates -
Particulate organic matters - Positive correlations - Purple paddy soils - Regression
coefficient - Soil property - Total Organic Carbon
Classification code:461.2 Biological Materials and Tissue Engineering - 481.2
Geochemistry - 483.1 Soils and Soil Mechanics - 531 Metallurgy and Metallography -
544.1 Copper - 546.1 Lead and Alloys - 546.3 Zinc and Alloys - 804 Chemical Products
Generally - 804.1 Organic Compounds - 912 Industrial Engineering and Management - 913
Production Planning and Control; Manufacturing
Numerical data indexing:Percentage 2.22e+00%, Percentage 3.21e+00%, Percentage 5.24e+00%,
Percentage 6.02e+00%, Percentage 8.63e+00% to 4.86e+01%, Size 5.30e-05m to 2.00e-03m
DOI:10.13227/j.hjkx.201609143
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 213>
Accession number:20173704160951
Title:Effects of NO<inf>3</inf><sup>-</sup>-N Loading on the Early-Period Efficiency of
Denitrification and Carbon Releasing in Constructed Wetland Filled with Bark
Authors:Jiang, Ying-He (1); Li, Yao (1); Zhang, Ying (1, 2); Zhang, Xiang-Ling (1)
Author affiliation:(1) School of Civil Engineering and Architecture, Wuhan University of
Technology, Wuhan; 430070, China; (2) Wuhan Branch, Northwest Design and Research
Institute Co., Ltd., China Municipal Engineering, Wuhan; 430056, China
Corresponding author:Li, Yao(1170121644@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1898-1903
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The reuse of tailwater as recycled water requires an advanced nitrogen removal
treatment, during which carbon source is added based on the tailwater quality. This study
conducted an advanced nitrogen removal model test in constructed wetland to evaluate the
effects of influent NO<inf>3</inf><sup>-</sup>-N loading on denitrification and carbon
releasing. In the constructed wetland, bark was used as filler and carbon source for
nitrogen removal. The results showed that nitrogen removal was steady in the constructed
wetland filled with bark. Denitrification velocity followed the Monod equation, and it
increased as the influent NO<inf>3</inf><sup>-</sup>-N loading increased. The saturation
constant K<inf>S</inf>was 19.10 mg·L<sup>-1</sup>. NO<inf>3</inf><sup>-</sup>-N
removal rate decreased as the influent NO<inf>3</inf><sup>-</sup>-N loading increased.
During the early periods of operating the constructed wetland filled with bark, the
carbon releasing amount and velocity increased as the influent NO<inf>3</inf><sup>-
</sup>-N loading increased. Both factors were positively linearly correlated with the
influent NO<inf>3</inf><sup>-</sup>-N loading. The static carbon releasing velocity was
0.2 mg·(g·d)<sup>-1</sup>. Compared with the hollow and loose plant
carbons, such as rotten wood, bark had a better performance and a longer cycle of carbon
releasing, which made bark a good slow - release carbon source. © 2017, Science
Press. All right reserved.
Number of references:30
Main heading:Wetlands
Controlled terms:Denitrification - Nitrogen - Nitrogen removal - Water conservation
Uncontrolled terms:Bark - Carbon source - Constructed wetlands - Monod equation -
Recycled water - Releasing velocity - Removal treatments - Saturation constant
Classification code:444 Water Resources - 802.2 Chemical Reactions - 804 Chemical
Products Generally
Numerical data indexing:Mass_Density 1.91e-02kg/m3
DOI:10.13227/j.hjkx.201609220
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 214>
Accession number:20173704160958
Title:Effect of Different Adding Means of Ignited Water Purification Sludge on Phosphorus
Adsorption and Forms
Authors:Zhu, Pei-Ying (1); Li, Da-Peng (1); Yu, Sheng-Nan (1)
Author affiliation:(1) School of Environmental Science and Engineering, University of
Science and Technology of Suzhou, Suzhou; 215009, China
Corresponding author:Li, Da-Peng(ustsldp@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1957-1964
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The adsorption of external phosphorus (P) and the distribution of dissolved
inorganic P (DIP) in the sediment interstitial water and sedimentary P forms were
researched under the ignited water purification sludge (IWPS) addition (mixing and
capping). The results showed that the adsorption ability of the IWPS increased obviously,
compared with the water purification sludge (WPS). It indicated that the
S<inf>max</inf>increased by 43.7%, the EPC<inf>0</inf>decreased by 69.1% and the DPS
decreased by 54.4%. The contribution of P disappearance in the overlying water had almost
no difference between the mixing and capping with IWPS, but it was obviously higher than
the control in both cases. Under the mixing condition, the adsorption of external P by
unit IWPS was 2.3 times of that under the capping condition, if the contacting
probability between the IWPS and the overlying water was considered. Under the capping
condition, the DIP in the sediment interstitial water (1- 2 cm) was 33.17 times (average)
of that under the mixing condition. It was attributed to the decrease of the dissolved
oxygen penetration due to capping. Under the mixing condition, the external P tended to
form Ca-P, while the percentages of NH<inf>4</inf>Cl-P and Fe/Al-P to Tot-P were bigger
under the capping condition. It was suggested that the improvement of the sedimentary
microenvironment by mixing with the IWPS was favorable for the adsorption of the external
P and the immobilization of the internal P. © 2017, Science Press. All right
reserved.
Number of references:35
Main heading:Biochemical oxygen demand
Controlled terms:Adsorption - Dissolved oxygen - Ignition - Mixing - Phosphorus -
Purification - Sedimentology - Sediments - Water treatment plants
Uncontrolled terms:Adsorption ability - Capping - Interstitial water - Microenvironments
- Oxygen penetration - Phosphorus adsorption - Phosphorus form - Water purification
Classification code:445.1 Water Treatment Techniques - 481.1 Geology - 483 Soil
Mechanics and Foundations - 521.1 Fuel Combustion - 802.3 Chemical Operations - 804
Chemical Products Generally
Numerical data indexing:Percentage 4.37e+01%, Percentage 5.44e+01%, Percentage 6.91e+01%,
Size 1.00e-02m to 2.00e-02m
DOI:10.13227/j.hjkx.201610120
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 215>
Accession number:20173704160977
Title:Prediction of Distribution of Soil Cd Concentrations in Guangdong Province, China
Authors:Sun, Hui (1, 2); Guo, Zhi-Xing (2); Guo, Ying (1, 2); Yuan, Yu-Zhi (2); Chai, Min
(2); Bi, Ru-Tian (1); Yang, Jing (1)
Author affiliation:(1) College of Resources and Environment, Shanxi Agriculture
University, Jinzhong; 030800, China; (2) Guangdong Key Laboratory of Agro-Environment
Integrated Control, Guangdong Institute of Eco-Environmental Science & Technology,
Guangzhou; 510650, China
Corresponding author:Bi, Ru-Tian(birutian@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2111-2124
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Heavy metals are one of the principal soil pollution sources. Contaminated soils
affect the quality of agricultural products, and then threaten human health. Prediction
of the contaminants distribution in the soil is the foundation of pollution evaluation
and risk control. A total of 1 000 soil profiles were collected to investigate the
spatial variation of soil cadmium (Cd) concentration in Guangdong province. These
datasets were divided into two groups, about 900 samples for model training and the other
100 for model validation. Six frequently used GIS spatial interpolation methods including
Spline, Natural Neighbor, Ordinary Kriging, Inverse Distance Weighted, Local Polynomial
Interpolation and Radial Basis Function, and Cubist which is a type of rule-based model
were compared to determine their suitability parameters for estimating soil Cd
concentration. Nine different resolutions including 2 000, 1 500, 1 000, 800, 500, 300,
200, 150, and 90 m were selected to calculate, evaluate and compare their accuracy. The
results showed that, ① Quantitative assessment of the continuous surfaces showed
that there was a large difference in the accuracy of the seven methods. Cubist was
superior to GIS-based spatial interpolation methods at all resolutions. Cubist was the
best tool for mapping the spatial distribution of Cd in soils with thirty-seven specific
predictors relevant to the source and behavior of Cd (parent material, land use, soil
type, soil properties, population density, gross domestic product per capita, and the
lengths and classes of the roads surrounding the sampling sites, climatic factors, etc.)
at 300 m×300 m resolution. The second was Spline, its accuracy was optimal at the 1
500 m×1 500 m resolution. ② Results of Cubist suggested that the soil Cd
spatial distribution was primarily dependent on the properties of soil regional parent
materials. And soil samples with higher Cd concentration mainly located in Carboniferous
and Quaternary areas. ③ Spatially, Cd concentrations were higher in the Pearl River
Delta region and north of Guangdong Province. Many hotspots existed throughout the Pearl
River Delta region due to transportation and pollution of the river. The major
anthropogenic inputs of heavy metals to soils and the environment were metalliferous
mining and smelting in the north of Guangdong Province. The soil Cd geometric mean
concentration of 0.147 mg·kg<sup>-1</sup>was lower than that of China, however it
varied from zero to 6.056 mg·kg<sup>-1</sup>. The areas with soil Cd
concentrations greater than 1.0 and 3.0 mg·kg<sup>-1</sup>were 160
km<sup>2</sup>and 2 140 km<sup>2</sup>respectively, accounting for 0.09% and 1.18% of the
total area of Guangdong Province. © 2017, Science Press. All right reserved.
Number of references:62
Main heading:Soil pollution
Controlled terms:Agricultural products - Cadmium - Geographic information systems - Heavy
metals - Interpolation - Inverse problems - Land use - Pollution - Pollution control -
Population statistics - Radial basis function networks - River pollution - Rivers -
Smelting - Soil pollution control - Soil surveys - Soils - Spatial distribution - Water
analysis
Uncontrolled terms:Cd concentrations - Cubist - Driving factors - Guangdong - Inverse
distance weighted - Pearl River Delta region - Quantitative assessments - Spatial
interpolation method
Classification code:403 Urban and Regional Planning and Development - 453 Water
Pollution - 483.1 Soils and Soil Mechanics - 531 Metallurgy and Metallography - 533.2
Metal Refining - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth
Metals - 801 Chemistry - 821.4 Agricultural Products - 903.3 Information Retrieval and
Use - 921 Mathematics - 921.6 Numerical Methods
Numerical data indexing:Percentage 9.00e-02%, Size 9.00e+01m, Area 1.60e+08m2, Area
2.14e+09m2, Percentage 1.18e+00%
DOI:10.13227/j.hjkx.201611006
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 216>
Accession number:20173704160948
Title:Complexation Between Copper(II) and Colored Dissolved Organic Matter from Municipal
Solid Waste Landfill
Authors:Xiao, Xiao (1, 2); He, Xiao-Song (1, 2); Gao, Ru-Tai (1, 2); Xi, Bei-Dou (1, 2);
Zhang, Hui (1, 2); Huang, Cai-Hong (1, 2); Li, Dan (1, 2); Yuan, Zhi-Ye (3)
Author affiliation:(1) State Key Laboratory of Environmental Criteria and Risk
Assessment, Chinese Research Academy of Environmental Sciences, Beijing; 100012, China;
(2) State Environmental Protection Key Laboratory of Simulation and Control of
Groundwater Pollution, Chinese Research Academy of Environmental Science, Beijing;
100012, China; (3) Beijing Zhengshi Environmental Engineering Co., Ltd., Beijing; 100076,
China
Corresponding author:He, Xiao-Song(hexs82@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1873-1880
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to elucidate the evolution mechanism of heavy metal species in landfill
cells, three-dimensional excitation emission matrix fluorescence spectroscopy (3DEEM),
fluorescence quenching titration and parallel factor analysis (PARAFAC) were employed to
study the complexation process between Cu(II) and colored dissolved organic matter (CDOM)
from landfill with different ages. The experimental results indicated that the landfilled
CDOM comprised protein-like, humic-like and fuvic-like matter. The relative content of
protein-like matter decreased during the landfill process, whereas the humic-like and
fuvic-like matter increased during the process. The range of the conditional stability
constants and the percentage of fluorophores participated the complextion between Cu(II)
and protein-like matter with different ages were 4.00-5.75 and 22.78%-95.30%,
respectively. Those parameters changed slightly for humic-like matter with different
ages, which ranged from 4.71 to 5.54 and from 42.35% to 61.46%, respectively. As regard
to fulvic-like matter, those parameters were 4.44-5.25 and 46.14%-57.22%, respectively.
The complexation ability of humic-like substances with Cu(II) decreased during the
landfill process, though the percentage of fluorophores participated the complexation
increased. The complexation ability of humic-like substances with Cu(II) was stronger
than that of fulvic-like matter, though the percentage of fluorophores participated the
complexation in humic-like matter was low compared with fulvic-like matter. © 2017,
Science Press. All right reserved.
Number of references:43
Main heading:Municipal solid waste
Controlled terms:Biogeochemistry - Biological materials - Complexation - Copper -
Dissolution - Factor analysis - Fluorescence - Fluorescence spectroscopy - Fluorophores -
Heavy metals - Land fill - Organic compounds - Proteins - Quenching - Solid wastes
Uncontrolled terms:Colored dissolved organic matter - Conditional stability constants -
Excitation-emission matrix fluorescence spectroscopies - Fluorescence quenching - Humic-
like substances - Municipal solid waste landfills - PARAFAC - Parallel factor analysis
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal -
461.2 Biological Materials and Tissue Engineering - 481.2 Geochemistry - 531
Metallurgy and Metallography - 537.1 Heat Treatment Processes - 544.1 Copper - 741.1
Light/Optics - 741.3 Optical Devices and Systems - 802.2 Chemical Reactions - 802.3
Chemical Operations - 804.1 Organic Compounds - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 2.28e+01% to 9.53e+01%, Percentage 4.24e+01% to 6.15e
+01%, Percentage 4.61e+01% to 5.72e+01%
DOI:10.13227/j.hjkx.201610166
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 217>
Accession number:20173704160949
Title:Effects of Three Bioretention Configurations on Dissolved Nitrogen Removal from
Urban Stormwater
Authors:Li, Li-Qing (1); Hu, Nan (1); Liu, Yu-Qing (1); Tu, Sheng-Liang (1); Chen, Hua-
Chao (2)
Author affiliation:(1) School of Environmental Studies, China University of Geosciences,
Wuhan; 430074, China; (2) Hubei Academy of Forestry, Wuhan; 430075, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1881-1888
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Multiple chemical forms of nitrogen in urban storm water make its management
challenging. Three types of bioretention systems were constructed in 2015 with loamy sand
as filter media, including a conventional freely drained bioretention (CB), a modified
bioretetion incorporated a submerged zone (MB1), and a modified bioretention
incorporating a submerged zone with woodchips addition (MB2). This study investigated the
role of vegetation, the use of submerged zone and carbon addition in achieving co-
optimized dissolved nitrogen removal in bioretention systems. Twelve bioretention columns
were monitored over a 12-month period of dosing with synthetic storm water under varying
hydrology and nitrogen loading rates. All the studied bioretention systems could achieve
very good ammonia removal (more than 95%) at an average inflow ammonia concentration of
(5.45±2.21) mg·L<sup>-1</sup>. The filter media sorption, nitrification and
plants uptake were the main removal pathways for incoming ammonia. The effluent nitrate
concentrations of the CB, MB1 and MB2 were (4.04±2.64)mg·L<sup>-1</sup>
(31.3%), (0.84±1.18) mg·L<sup>-1</sup>(85.7%), and (0.26±0.48)
mg·L<sup>-1</sup>(95.6%), respectively, at the average inflow nitrate
concentration of (5.88±2.32) mg·L<sup>-1</sup>. The use of the native
species P.alopecuroides, a submerged zone and woodchips addition could effectively
decrease the effluent nitrate concentration, reduce the washout and achieve high nitrate
removal. Both plants uptake and denitrification were the two major pathways for removal
of inflow nitrate. Inflow magnitude, antecedent dry days and inflow nitrate concentration
were the main factors influencing the effluent nitrate concentrations for the three
bioretention systems. The results highlighted that the bioretention design of the native
species P.alopecuroides incorporated a submerged zone with 10% woodchips addition could
consistently and effectively remove storm water nitrate under hydrological regime and
nitrogen loading rates. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Nitrogen removal
Controlled terms:Ammonia - Carbon - Dissolution - Effluents - Filters (for fluids) -
Nitrates - Nitrogen - Passive filters - Storms
Uncontrolled terms:Bioretention - Dissolved nitrogen - Pennisetum alopecuroides -
Submerged zones - Surface runoffs
Classification code:443.3 Precipitation - 452.3 Industrial Wastes - 703.2 Electric
Filters - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.2
Inorganic Compounds
Numerical data indexing:Age 1.00e+00yr, Percentage 1.00e+01%, Percentage 3.13e+01%,
Percentage 8.57e+01%, Percentage 9.50e+01%, Percentage 9.56e+01%
DOI:10.13227/j.hjkx.201612215
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 218>
Accession number:20173704160704
Title:Adsorption of Pb<sup>2+</sup>and Cd<sup>2+</sup>from Aqueous Solution Using
Vermicompost Derived from Cow Manure and Its Biochar
Authors:Du, Wen-Hui (1); Zhu, Wei-Qin (1); Pan, Xiao-Hui (1); Shen, Xu-Yang (1); Chen,
Si-Yuan (1); Chen, Ke-Le (1); Kanjihan, Mushala (1); Zhang, Hang-Jun (1); Ding, Ying (1)
Author affiliation:(1) Key Laboratory of Hangzhou City for Ecosystem Protection and
Restoration, College of Life and Environmental Sciences, Hangzhou Normal University,
Hangzhou; 310036, China
Corresponding author:Zhu, Wei-Qin(zhwq@hznu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2172-2181
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Using vermicompost (CV) as raw material, its biochar (CVC350) was prepared at
350℃ and then their physio-biochemical properties were characterized. Furthermore,
adsorption studies were performed in a batch system for removing Pb<sup>2+</sup>and
Cd<sup>2+</sup>ions from solution. The characterization results revealed much higher
surface area, smaller pore size, greater aromaticity and nonpolarity of CVC350 as
compared to CV. Batch adsorption experiments revealed that both the adsorption of
Pb<sup>2+</sup>and Cd<sup>2+</sup>onto CV or CVC350 fitted Langmuir isotherm model very
well, and the maximum adsorption capacity of Pb<sup>2+</sup>was in the order of
CVC350>CV, but no difference was observed for the adsorption capacity of
Cd<sup>2+</sup>between CV and CVC350. The desorption studies showed that both CV and
CVC350 had much higher adsorption rate for Pb<sup>2+</sup>than that for Cd<sup>2+</sup>,
and the Cd<sup>2+</sup>adsorbed could be more easily desorbed from CV and CVC350 compared
with that for the Pb<sup>2+</sup>adsorbed. Both the dynamic adsorption process of
Pb<sup>2+</sup>onto CV and CVC350 was a rapid process, however, the adsorption process of
Cd<sup>2+</sup>onto CV and CVC350 could be separated into the first rapid step and the
second slower step. The adsorption capacity of Pb<sup>2+</sup>or Cd<sup>2+</sup>onto CV
and CVC350 was only affected by the much lower initial pH of the solution, besides, the
adsorption capacity of Cd<sup>2+</sup>onto CV and CVC350 was relatively more influenced
by the initial pH compared with that of Pb<sup>2+</sup>. Moreover, FTIR analysis showed
that the adsorption of Pb<sup>2+</sup>and Cd<sup>2+</sup>on CV depended on the active
sites such as aliphatic alcohol, aliphatic acid, carbonates as well as phosphate while
that on CVC350 mainly relied on aromatic alcohol, aromatic acid and carbonates. ©
2017, Science Press. All right reserved.
Number of references:35
Main heading:Adsorption
Controlled terms:Aromatic compounds - Aromatization - Cadmium compounds - Carbonates -
Desorption - Fertilizers - Isotherms - Lead - Pore size - Solutions
Uncontrolled terms:Adsorption capacities - Adsorption process - Batch adsorption
experiments - Bio chars - Biochemical properties - Cd^2+ - Langmuir isotherm models -
Vermicomposts
Classification code:546.1 Lead and Alloys - 802.2 Chemical Reactions - 802.3 Chemical
Operations - 804 Chemical Products Generally - 951 Materials Science
DOI:10.13227/j.hjkx.201608087
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 219>
Accession number:20173704160947
Title:Assessment of the Spatial-temporal Distribution Characteristics and Main Affecting
Factors of Chromophoric Dissolved Organic Matter in Spring and Summer at the Changjiang
Estuary and Adjacent Areas
Authors:Sun, Yu-Yan (1); Bai, Ying (1); Su, Rong-Guo (1); Shi, Xiao-Yong (1)
Author affiliation:(1) Key Laboratory of Marine Chemistry Theory and Technology, Ministry
of Education, Ocean University of China, Qingdao; 266100, China
Corresponding author:Su, Rong-Guo(surongguo@ouc.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1863-1872
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The composition and distribution characteristics of chromophoric dissolved
organic matter(CDOM) of Changjiang Estuary and its adjacent waters in spring (March 2015)
and summer (July 2015) were evaluated by excitation-emission matrix spectroscopy (EEMs)
in combination with parallel factor(PARAFAC) analysis. Three humic-like components [C1
(370/495 nm),C2(330/405 nm),C3(365/440 nm)] and one protein-like component [C4(295/345
nm)] were identified. The distribution patterns of the four components in spring and
summer were almost the same, showing a decreasing trend from Changjiang Estuary to
adjacent waters. In spring, the high value areas of three humic-like components were
located inside of Changjiang Estuary, and the high value areas of the protein-like
component were located in the South Passage of Changjiang Estuary. In the surface layer,
the CDOM was mainly from terrestrial input and human activities; the influence of
terrestrial weakened in the middle layer because of the lower fluorescence intensity
values; and in the bottom layer the fluorescence values were higher than those in the
middle layer, which was caused by sediment resuspension. There were high value areas in
the Daishan Island, which were related to human activities. In summer, the high value
areas of CDOM were almost the same as those in spring, and all layers had similar
fluorescence intensity values, which indicated that they were mixed evenly. CDOM in
spring and summer had high humification index (HIX) values in the Changjiang Estuary,
whereas for biological index (BIX), its high values appeared in the adjacent waters. Four
components (C1-C4), a<inf>355</inf>and DOC, TN, TP, DO, Chl-a, Salinity were evaluated by
redundancy analysis (RDA), which indicated that C1-C4 and TN, TP were mainly affected by
terrestrial input and human activities, and DOC was affected by terrestrial and marine
source together. The use of EEMs-PARAFAC in combination with multivariate analysis to
parse the composition of CDOM revealed the source of CDOM and main influencing factors in
Changjiang Estuary and adjacent waters, and plays an important role in the biogeochemical
research of biogenic elements in estuarine waters. © 2017, Science Press. All right
reserved.
Number of references:35
Main heading:Springs (components)
Controlled terms:Biogeochemistry - Biological materials - Dissolution - Estuaries -
Factor analysis - Fluorescence - Multivariant analysis - Organic compounds - Proteins -
Redundancy
Uncontrolled terms:Changjiang Estuary - Chromophoric dissolved organic matter -
Excitation emission matrices - Parallel factor analysis - Redundancy analysis
Classification code:407.2 Waterways - 461.2 Biological Materials and Tissue Engineering
- 481.2 Geochemistry - 601.2 Machine Components - 741.1 Light/Optics - 802.3 Chemical
Operations - 804.1 Organic Compounds - 922 Statistical Methods - 922.2 Mathematical
Statistics
DOI:10.13227/j.hjkx.201611173
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 220>
Accession number:20173704160946
Title:Potential Risk and Distribution Characteristics of PPCPs in Surface Water and
Sediment from Rivers and Lakes in Beijing, China
Authors:Zhang, Pan-Wei (1); Zhou, Huai-Dong (1); Zhao, Gao-Feng (1); Li, Kun (1); Zhao,
Xiao-Hui (1); Liu, Qiao-Na (1); Ren, Min (1); Zhao, Dan-Dan (1); Li, Dong-Jiao (1)
Author affiliation:(1) China Institute of Water Resources and Hydropower Research,
Beijing; 100038, China
Corresponding author:Zhao, Gao-Feng(zhaogf@iwhr.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1852-1862
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Thirty-four water samples and twenty-three sediment samples from the urban
rivers, ten water samples and five sediment samples from urban lakes were collected in
Beijing. Ten PPCPs (acetaminophen, lincomycin, caffeine, trimethoprim, azithromycin,
sulfamethoxazole, diltiazem, tylosin, carbamazepine, fluoxetine) were extracted from
water samples by solid-phase extraction (SPE) and from sediment samples by ultrasonic
extraction, and then analyzed by high-performance liquid chromatography coupled with
tandem mass spectrometry (HPLC-MS/MS). The ranges of geometric mean values were 0-655
ng·L<sup>-1</sup>and 0-252 ng·L<sup>-1</sup>in water samples from urban
rivers and lakes,respectively. The range of detection ratio was 0-100% for 10 PPCPs in
river water samples, caffeine was the dominant pollutant in water samples and the
detection ratio was 100%, whereas sulfamethoxazole, diltiazem and tylosin were not
detected in river samples. The range of detection ratio was 0-100% for 10 PPCPs in lake
water samples. The detection ratios of acetaminophen, lincomycin, caffeine and
azithromycin were 100%, whereas sulfamethoxazole, diltiazem, tylosin, carbamazepine were
not detected in lake water samples. The ranges of geometric mean values were N.D.-1 709
ng·g<sup>-1</sup>and N.D.-35.9 ng·g<sup>-1</sup>in sediment samples from
urban rivers and lakes, respectively. The ranges of detection ratio were 4%-96% and 0-
100% for 10 PPCPs in river and lake sediment samples, respectively. The detection ratio
of trimethoprim was 96% and that of tylosin was 4% in river sediment, the detection ratio
of diltiazem was 100% and caffeine, tylosin,carbamazepine were not detected. The
concentrations of PPCPs in water and sediment samples from Yongyin River, Liangshui
River, Tonghui River, Bahe River were higher than those in other rivers. The
concentrations of PPCPs in water and sediment samples from Yongding River,Kunyu River
were lower than those in other rivers. Further risk assessment results showed that the
overall risk was not high in water of rivers and lakes and the RQ values were below 0.1,
which showed low risk to microorganisms. But the condition was not the same in sediment
from rivers and lakes. The RQ values of acetaminophen were between 0.1 and 1 in sediments
from Yongyin River, Tonghui River, Bahe River. The RQ values of lincomycin were between
0.1 and 1 in sediments from Yongyin River, Wenyu River,Tonghui River, Hucheng River, Bahe
River, Liangshui River, Houhai Lake. The RQ values of trimethoprim were between 0.1 and 1
in sediments from Yongyin River, Qinghe River, Wenyu River, Tonghui River Hucheng River,
Bahe River, Liangma River, Liangshui River and Houhai Lake. The RQ values of azithromycin
were between 0.1 and 1 in sediments from Liangma River, Liangshui River, which all showed
medium risk to microorganisms in sediments. The RQ values of azithromycin exceeded 1 from
Yongyin River, Qinghe River, Wenyu River, Tonghui River, Bahe River and Houhai Lake,
which showed high risk to microorganisms in sediments. © 2017, Science Press. All
right reserved.
Number of references:33
Main heading:River pollution
Controlled terms:Amides - Caffeine - Extraction - High performance liquid chromatography
- Lakes - Liquid chromatography - Mass spectrometry - Microorganisms - Phase separation -
Risk assessment - Rivers - Sediments - Surface waters - Ultrasonic applications - Water
pollution - Water resources
Uncontrolled terms:Beijing - Distribution characteristics - Geometric mean value -
Potential risks - PPCPs - River water samples - Solid-phase extraction - Ultrasonic
extraction
Classification code:444 Water Resources - 444.1 Surface Water - 453 Water Pollution -
461.9 Biology - 483 Soil Mechanics and Foundations - 753.3 Ultrasonic Applications -
801 Chemistry - 802.3 Chemical Operations - 804.1 Organic Compounds - 914.1 Accidents
and Accident Prevention
Numerical data indexing:Mass_Density 0.00e+00kg/m3 to 2.52e-07kg/m3, Mass_Density 0.00e
+00kg/m3 to 6.55e-07kg/m3, Percentage 0.00e+00% to 1.00e+02%, Percentage 1.00e+02%,
Percentage 4.00e+00%, Percentage 4.00e+00% to 9.60e+01%, Percentage 9.60e+01%
DOI:10.13227/j.hjkx.201610073
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 221>
Accession number:20173704160954
Title:Effects of Joint-reaction Combined by Ozonation and Coagulation on Aquatic Organic
Matters
Authors:Liu, Hai-Long (1); Fu, Jing-Miao (1); Guo, Xue-Feng (1); Chai, Jian-Tian (1);
Zhang, Zhong-Min (2)
Author affiliation:(1) School of Environmental and Resource Sciences, Shanxi University,
Taiyuan; 030006, China; (2) Taiyuan Environment Detection Central Station, Taiyuan;
030002, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1918-1927
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Variations of residual ozone concentration in pure water and Al<inf>2</inf>
(SO<inf>4</inf>)<inf>3</inf>solution were studied. The spectral characteristics, contents
of organic compounds and disinfection by products (DBPs) yields in preozonated,
preozonated coagulated (POC) and ozonated combined coagulated (OC) waters were detected
by differential absorbance(DA), three dimensional fluorescence excitation-emission matrix
spectroscopy (3D-EEM), GC and TOC. The purpose of the work was to investigate the effects
of ozonation combined with coagulation on their oxidation extents of organic matter and
the production of DBPs. Studies showed that there were remarkable differences between the
two processes, POC and OC, which proved the existence of joint interaction of ozone and
coagulant. The joint interaction involved the following aspects. ① Decomposition
rate of ozone was improved; and the free radical production was increased during OC
compared with POC. Comparing to ozone alone, 15.2% and 23.9% more radical capture with
ozone 2mg·L<sup>-1</sup>, Al<sup>3+</sup>1 mg·L<sup>-1</sup>, 3
mg·L<sup>-1</sup>were detected. ② The difference of OC and POC was found in
that organic matter removal of OC was lower than that of POC. The pathways of OC and POC
showed difference, which resulted in differences of reaction between organic matter and
disinfectant, as well as yields of DBPs. OC removed UV<inf>254</inf>and DOC more
efficiently than single ozonation or single coagulation; but less efficiently than POC.
DCAAFP (Dichloroacetic acid formation potential) and TCAAFP (Trichloroacetic acid
formation potential) were 47 μg·L<sup>-1</sup>and 20.5 μg·L<sup>-
1</sup>respectively after treatment by POC with O<inf>3</inf>1mg·L<sup>-1</sup>and
Al<sup>3+</sup>1mg·L<sup>-1</sup>, and chloroform formation potential (CFFP) was
97.8 μg·L<sup>-1</sup>, which were 51%, 64.6% and 41.5% respectively lower than
those in the raw water. Under the same dose conditions, DCAAFP, TCAAFP and CFFP after OC
were 48.4 μg·L<sup>-1</sup>, 21.4 μg·L<sup>-1</sup>and 117.3
μg·L<sup>-1</sup>, respectively, which were 49.6%, 63% and 29.5% lower than
those in raw water. The difference between the efficiencies of POC and OC would be
enlarged with increase of coagulant dose under the same ozone dose. Considering its
safety and efficiency, the ozone dosage, adding spot and coagulant species must be taken
into account when combined treatment of preozonation and coagulation is used; further
investigations are also needed. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Ozone
Controlled terms:Aluminum - Biogeochemistry - Biological materials - Chemical water
treatment - Coagulation - Decomposition - Dichloroacetic acid - Disinfection - Efficiency
- Fluorescence - Free radicals - Organic compounds - Ozone water treatment - Ozonization
- Trichloroacetic acid
Uncontrolled terms:Differential absorbance - Disinfection byproducts - Free radical
productions - Pre-ozonation - Residual ozone concentrations - Safety and efficiencies -
Spectral characteristics - Three-dimensional fluorescences
Classification code:461.2 Biological Materials and Tissue Engineering - 481.2
Geochemistry - 541.1 Aluminum - 741.1 Light/Optics - 802.2 Chemical Reactions - 802.3
Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical
Products Generally - 804.1 Organic Compounds - 913.1 Production Engineering
Numerical data indexing:Mass_Density 1.00e-03kg/m3, Mass_Density 1.17e-04kg/m3,
Mass_Density 2.00e-03kg/m3, Mass_Density 2.05e-05kg/m3, Mass_Density 2.14e-05kg/m3,
Mass_Density 3.00e-03kg/m3, Mass_Density 4.70e-05kg/m3, Mass_Density 4.84e-05kg/m3,
Mass_Density 9.78e-05kg/m3, Percentage 1.52e+01%, Percentage 2.39e+01%, Percentage 2.95e
+01%, Percentage 4.15e+01%, Percentage 4.96e+01%, Percentage 5.10e+01%, Percentage 6.30e
+01%, Percentage 6.46e+01%
DOI:10.13227/j.hjkx.201607233
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 222>
Accession number:20173704160935
Title:Polycyclic Aromatic Hydrocarbons in the Atmosphere of Dajiuhu, Shennongjia, China
Authors:Jin, Meng-Yun (1); Xing, Xin-Li (1); Ke, Yan-Ping (1); Zheng, Huang (1); Hu,
Tian-Peng (1); Sun, Yan (1); Ding, Yang (1); Li, Hui (1); Zhang, Ze-Zhou (1); Qi, Shi-Hua
(1)
Author affiliation:(1) State Key Laboratory of Biogeology and Environmental Geology,
School of Environmental Studies, China University of Geosciences, Wuhan; 430074, China
Corresponding author:Xing, Xin-Li(xingxinli5300225@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1760-1768
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The concentration, potential source and health risks of 16 polycyclic aromatic
hydrocarbons (PAHs) in the atmosphere of Dajiuhu, Shennongjia, China, were studied.
Polyurethane foam (PUF) Passive air samplers (PAS) were settled. The results indicated
that the total concentrations of 16 PAHs in different samples ranged from 6.94 to 184.23
ng·m<sup>-3</sup>, with the mean of 30.36 ng·m<sup>-3</sup>. The dominant
compounds were low rings PAHs, such as Phe, Nap, Pyr, Fla, Flu and Ant. Compared with
other regions, the PAHs pollution of Dajiuhu atmosphere was at a low level. Higher PAHs
concentrations were detected in nearby Deer farm, Dajiuhu peat area and Dajiuhu Wetland
Authority. Higher PAHs concentrations were detected in autumn and winter, whereas lower
concentrations were detected in spring and summer. Potential pollution sources of PAHs
were investigated by diagnostic ratios and backward trajectory analysis, which indicated
that coal and biofuel combustion, vehicle emissions and petroleum were the main sources.
PAHs of Dajiuhu in air not only came from local emission, but also originated from Hubei,
Henan and Hunan's atmosphere transport for most part and long range transport from
northwest direction for small part. Health risks assessment results showed that the
annual average concentration of total Benzo(a)pyrene-equivalent carcinogenic potency
(∑BaP<inf>eq</inf>) was 0.208 ng·m<sup>-3</sup>, lower than the value
recommended by Ambient Air Quality Standard of China(GB 3095-2012, 1 ng·m<sup>-
3</sup>), indicating a low carcinogenic risk for the local residents. © 2017,
Science Press. All right reserved.
Number of references:35
Main heading:Polycyclic aromatic hydrocarbons
Controlled terms:Air quality - Air quality standards - Aromatic compounds - Aromatic
hydrocarbons - Aromatization - Coal combustion - Earth atmosphere - Health - Health risks
- Hydrocarbons - Pollution - Polyurethanes - Rigid foamed plastics - Risk assessment
Uncontrolled terms:Backward trajectory analysis - Dajiuhu - Long range transport -
Polyurethane Foam - Risks assessments
Classification code:443.1 Atmospheric Properties - 451.2 Air Pollution Control - 461.6
Medicine and Pharmacology - 461.7 Health Care - 521 Fuel Combustion and Flame Research
- 524 Solid Fuels - 802.2 Chemical Reactions - 804.1 Organic Compounds - 815.1.1
Organic Polymers - 817.1 Polymer Products - 902.2 Codes and Standards - 914.1
Accidents and Accident Prevention
DOI:10.13227/j.hjkx.201609235
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 223>
Accession number:20173704160937
Title:Emission Characteristics of Residential Coal Combustion Flue Gas in Beijing
Authors:Liang, Yun-Ping (1); Zhang, Da-Wei (1); Lin, An-Guo (1); Ma, Zhao-Hui (1); Wu,
Xiao-Dong (1)
Author affiliation:(1) Beijing Key Laboratory of Airborne Particulate Matter Monitoring
Technology, Beijing Municipal Environmental Protection Monitoring Center, Beijing;
100048, China
Corresponding author:Zhang, Da-Wei(zhangdawei@bjmemc.com.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1775-1782
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Honeycomb briquet,biomass briquettes and bituminous coal from suburb of Beijing
were chosen as testing samples to carry out combustion experiments. The characteristics
of inorganic pollutant emission factors and VOCs emission factors released from the flue
gas were studied. The results showed that under the condition of sufficient combustion,
the average emission factors of SO<inf>2</inf>from these three types of coal respectively
were 1.50,1.91,1.62 kg·t<sup>-1</sup>; NO<inf>x</inf>0.420,0.901,2.20
kg·t<sup>-1</sup>; CO 22.4,37.3,87.3 kg·t<sup>-1</sup>. Combustion emission
factors of gaseous pollutants for NO<inf>x</inf>and CO were in the order of bituminous
coal>biomass briquettes>honeycomb briquet. SO<inf>2</inf>emission factors were in
the order of biomass briquettes>bituminous coal>honeycomb briquet. The 2014
emissions inventory of the three civil coal combustion pollutants in Beijing was
obtained. Bituminous coal emissions of SO<inf>2</inf>was more than
5.5×10<sup>3</sup>tons,NO<inf>x</inf>was more than 7.5×10<sup>3</sup>tons,CO
was more than 290×10<sup>3</sup>tons. All these coal types released more kinds and
higher concentrations of volatile organic compounds in ignition phase and damp down
stage. VOCs emission factor was the highest during ignition phase, followed by damp down
phase. © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Coal combustion
Controlled terms:Biomass - Bituminous coal - Briquets - Coal - Flue gases - Flues - Fog -
Honeycomb structures - Housing - Nitrogen oxides - Pollution - Volatile organic
compounds
Uncontrolled terms:Combustion emission factors - Combustion experiments - Combustion
pollutant - Emission characteristics - Emission factors - Emission inventories -
Inorganic pollutants - Residential coal combustions
Classification code:403.1 Urban Planning and Development - 408.2 Structural Members and
Shapes - 443.1 Atmospheric Properties - 451.1 Air Pollution Sources - 524 Solid Fuels
- 804.1 Organic Compounds - 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201608142
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 224>
Accession number:20173704160955
Title:Disinfection Action of Ultraviolet Radiation and Chlorination on Escherichia coli
and Poliovirus
Authors:Xu, Li-Mei (1); Zhang, Chong-Miao (1); Wang, Xiao-Chang (1); Ji, Zheng (1); Zhou,
Jin-Hong (1)
Author affiliation:(1) Key Laboratory of Northwest Water Resource, Environment and
Ecology, School of Environmental and Municipal Engineering, Xi'an University of
Architecture and Technology, Xi'an; 710055, China
Corresponding author:Zhang, Chong-Miao(zhangchongmiao@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1928-1935
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:We chose Escherichia coli (E. coli) and poliovirus as a typical pathogenic
bacterium and virus, respectively. The effects of two typical disinfectants (chlorine and
ultraviolet) on each of them were investigated based on microbial culture and
quantitative PCR methods. The results showed that Poliovirus was appreciably more
resistant to chlorine (required disinfection dose for 1-log microbial reduction: 10.14
mg·L<sup>-1</sup>·min for E. coli; 19.2 mg·L<sup>-1</sup>·min
for poliovirus) and ultraviolet (UV) light (required UV dose for 1-log microbial
reduction: 1.81 mJ·cm<sup>-2</sup>for E. coli; 6.37 mJ·cm<sup>-2</sup>for
poliovirus) than E. coli for the microbial culture. For PCR, this study revealed that 1-
log gene reduction required UV doses and ct values of at least one to two orders of
magnitude higher than that for the microbial culture. The damage of RNA in Poliovirus was
more seriously than that of DNA in E. coli. Single-stranded RNA was more sensitive to UV
irradiation than DNA. The result evaluated with the quantitative PCR method showed
opposite result to that of the traditional culture method in which the Poliovirus was
more tolerant. The required UV doses for 1-log nucleic acid reduction were 135
mJ·cm<sup>-2</sup>and 270.3 mJ·cm<sup>-2</sup>for E. coli and poliovirus,
respectively. Nucleic acid damage required a higher dose of disinfectants than microbial
inactivation, which was probably attributed to the phenomenon of viable but non-
culturable (VBNC) cells, other molecular targets of inactivation and the persistence of
nucleic acid after cell death. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Polymerase chain reaction
Controlled terms:Bacteria - Biomolecules - Cell death - Chlorination - Chlorine -
Disinfectants - Disinfection - Escherichia coli - Irradiation - Nucleic acids - RNA -
Viruses
Uncontrolled terms:E.coli - Escherichia coli (E. coli) - Inactivation - Microbial
inactivation - Pathogenic bacterium - Poliovirus - Quantitative PCR - Viable but non-
culturable
Classification code:461.2 Biological Materials and Tissue Engineering - 461.9 Biology -
801.2 Biochemistry - 802.2 Chemical Reactions - 803 Chemical Agents and Basic
Industrial Chemicals - 804 Chemical Products Generally
DOI:10.13227/j.hjkx.201611021
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 225>
Accession number:20173704160971
Title:Microbial Structure of an Enhanced Two-phase High-solid Anaerobic Digestion System
Treating Sludge
Authors:Cao, Zhi-Ping (1); Wu, Jing (1); Zuo, Jian-E (1); Wang, Xiao-Lu (1); Wang, Chong
(1); Wang, Guang-Qi (1, 2); Wang, Kai-Jun (1); Qian, Yi (1)
Author affiliation:(1) State Key Joint Laboratory of Environment Simulation and Pollution
Control, School of Environment, Tsinghua University, Beijing; 100084, China; (2) China
Northwest Architecture Design and Research Institute Co., Ltd., Xi'an; 710018, China
Corresponding author:Wu, Jing(wu_jing@tsinghua.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2059-2064
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:High-solid anaerobic digestion (HSAD) of sludge has several advantages like
smaller reactor, lower energy consumption and less digestate. However, the understanding
about the mechanism especially the microbial mechanism is still limited. In this study,
microbial communities of a pilot-scale sludge HSAD system at steady state were
investigated with 16S rRNA clone library technology. The system employed an enhanced
two-phase anaerobic digestion process, i. e. 'hyperthermophilic acidogenesis (70℃,
3 d) - thermophilic methanogenesis (55℃, 12.5 d)' to treat waste activated sludge
with a solid content of about 9%. The volatile solid (VS) removal rate was 35.7% and
methane yield (CH<inf>4</inf>/VS<inf>removed</inf>) was 0.648
m<sup>3</sup>·kg<sup>-1</sup>. The bacterial compositions of the two phases were
significantly different: there were plenty of proteolytic bacteria in hyperthermophilic
acidogenesis phase; and the bacteria degrading polysaccharides like cellulose and the
bacteria utilizing long-chain fatty acids were found in thermophilic methanogenesis
phase; some bacteria degrading simple saccharides existed in both phases. In both phases,
the dominant archaea were Methanothermobacter. Especially, 100% of the retrieved archaea
in the thermophilic methanogenesis phase belonged to genus Methanothermobacter. This
indicated that hydrogenotrophic methanogenesis was the predominant methanogenesis pathway
in this system since methane was only detected in the methanogenesis phase. © 2017,
Science Press. All right reserved.
Number of references:29
Main heading:Anaerobic digestion
Controlled terms:Activated sludge process - Bacteria - Biodegradation - Energy
utilization - Fatty acids - Methane - Microorganisms - RNA - Sludge digestion
Uncontrolled terms:High-solids - Hydrogenotrophic methanogenesis - Microbial communities
- Two phase anaerobic digestion - Waste activated sludges
Classification code:452.2 Sewage Treatment - 461 Bioengineering and Biology - 525.3
Energy Utilization - 804.1 Organic Compounds
Numerical data indexing:Percentage 1.00e+02%, Percentage 3.57e+01%, Percentage 9.00e+00%,
Specific_Volume 6.48e-01m3/kg
DOI:10.13227/j.hjkx.201611057
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 226>
Accession number:20173704160943
Title:Effects of DOC+CDPF on Emission Characteristics of Heavy-duty Diesel Vehicle
Authors:Zhang, Yun-Hua (1); Lou, Di-Ming (1); Tan, Pi-Qiang (1); Hu, Zhi-Yuan (1)
Author affiliation:(1) School of Automotive Studies, Tongji University, Shanghai; 201804,
China
Corresponding author:Lou, Di-Ming(loudiming@tongji.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1828-1834
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on the revolving drum test bench, an experimental study was conducted in
heavy-duty diesel vehicle at China Stage Ⅲ with and without DOC+CDPF to investigate
the effects of DOC+CDPF on the gaseous and particle emission characteristics under C-WTVC
driving cycle. The results showed that from city circulation conditions to high way
circulation conditions to high-speed circulation conditions, the CO, THC,
CO<inf>2</inf>and PM emission factors of the test vehicle without DOC+CDPF decreased
while NO<inf>x</inf>and PN emission factors increased, the particle number concentration
showed two peaks versus the size of the particles and accumulated particles predominated.
After the test vehicle was equipped with DOC+CDPF, the emissions factors decreased and
the faster the circulation speed, the greater the decreasing amplitudes of the emissions
factors. Throughout the C-WTVC, the decreasing amplitudes of CO, THC, CO<inf>2</inf>, and
NO<inf>x</inf>emission factors were 70.36%, 72.73%, 17.00% and 7.76%, the PM and PN
emission factors decreased by 93.77% and 98.91% respectively. The particle number
concentration still had two peaks versus the size of the particles and the nuclear mode
particles predominated. Besides, the size of the accumulated particles peak diminished.
© 2017, Science Press. All right reserved.
Number of references:25
Main heading:Particulate emissions
Controlled terms:Carbon dioxide - Diesel locomotives - Gas emissions - Nitrogen oxides -
Vehicles
Uncontrolled terms:DOC+CDPF - Emission characteristics - Emission factors - Emissions
factors - Heavy duty diesel vehicles - Particle emissions - Particle number concentration
- Test benches
Classification code:451.1 Air Pollution Sources - 682.1.2 Locomotives - 804.2
Inorganic Compounds
Numerical data indexing:Percentage 7.27e+01%, Percentage 7.76e+00%, Percentage 9.38e+01%,
Percentage 9.89e+01%, Percentage 1.70e+01%, Percentage 7.04e+01%
DOI:10.13227/j.hjkx.201610188
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 227>
Accession number:20173704160976
Title:Characteristics of Soil Respiration and Soil Organic Carbon in Fava Bean Farmland
Under Ridge Tillage and Straw Mulching in Southwest China
Authors:Xiong, Ying (1, 2); Wang, Long-Chang (1); Du, Juan (1); Zhao, Lin-Lu (1); Zhou,
Quan (1); Zhang, Sai (1)
Author affiliation:(1) Engineering Research Center of South Upland Agriculture, Ministry
of Education, College of Agronomy and Biotechnology, Southwest University, Chongqing;
400716, China; (2) College of Agriculture, Henan University of Science and Technology,
Luoyang; 471003, China
Corresponding author:Wang, Long-Chang(wanglc2003@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2102-2110
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Soil respiration is an important process for carbon emission. A field study was
conducted with four treatments including T (traditional tillage+straw mulching level 0
kg·hm<sup>-2</sup>), R (ridge tillage+straw mulching level 0 kg·hm<sup>-
2</sup>), RS1 (ridge tillage+straw mulching level 3 750 kg·hm<sup>-2</sup>), and
RS2 (ridge tillage+straw mulching level 7 500 kg·hm<sup>-2</sup>), so as to probe
the effects of ridge tillage and straw mulching amount on soil respiration and soil
organic carbon(SOC) and the relationships of soil respiration rate with soil temperature
and water content (SWC) during the growth period of fava bean in the triple intercropping
system of fava bean/maize/sweat pomato in dryland region of southwest China known as the
purple hilly region. The changes of soil respiration rate were in accordance with crop
growing, being firstly increased and then decreased during the whole growth period of
fava bean, and there were significant differences in soil respiration rate among
different treatments, which could be ranked as RS2 [3.365 g·
(m<sup>2</sup>·d)<sup>-1</sup>]>RS1 [2.935 g·(m<sup>2</sup>·d)
<sup>-1</sup>]>T[2.683 g·(m<sup>2</sup>·d)<sup>-1</sup>]>R [2.263
g·(m<sup>2</sup>·d)<sup>-1</sup>]. Ridge tillage reduced soil respiration
in fava bean farmland, whereas straw mulching treatment increased it, whose variation
trend was in accordance with that of straw mulching levels. There was a significant
exponential relationship between soil respiration and soil temperature at 5 cm and 10 cm
depth, and the exponential model at 10 cm produced better fitness than that at 5 cm. The
temperature sensitivity (Q<inf>10</inf>) at 10 cm could be ranked as
RS2>RS1>R>T, being 1.751, 1.665, 1.616, and 1.35, respectively. The combined
exponential model indicated that soil temperature and water content (SWC) could jointly
explain 68%(R), 79%(RS1) and 76%(RS2) of variation in soil respiration. This study
results suggested that ridge tillage and straw mulching significantly increased SOC of 0
-5 cm, 5-10 cm, 10-20 cm and 20-30 cm soil layers, and the increase of SOC was in
accordance with that of straw mulching levels. The SOC was significantly increased in 5-
10 cm and 10-20 cm soil layers, which could be ranked as RS2>RS1>R>T, and the
increases in SOC at 5-10 cm were especially notable. The weighted average of particulate
organic carbon (POC) at 0-30 cm was significantly increased, but the proportion of POC in
SOC did not show significant influence. © 2017, Science Press. All right reserved.
Number of references:36
Main heading:Soils
Controlled terms:Agricultural machinery - Agriculture - Cultivation - Farms - Organic
carbon - Temperature
Uncontrolled terms:Fava bean farmland - Ridge tillage - Soil organic carbon - Soil
respiration - Straw mulching
Classification code:483.1 Soils and Soil Mechanics - 641.1 Thermodynamics - 804.1
Organic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
Numerical data indexing:Size 0.00e+00m to 3.00e-01m, Size 0.00e+00m to 5.00e-02m, Size
1.00e-01m, Size 1.00e-01m to 2.00e-01m, Size 2.00e-01m to 3.00e-01m, Size 5.00e-02m to
1.00e-01m, Size 5.00e-02m
DOI:10.13227/j.hjkx.201611046
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 228>
Accession number:20173704160944
Title:Accumulated Health Risk Assessment of Arsenic in Drinking Water of Major Cities of
China
Authors:Zhang, Qiu-Qiu (1, 2); Pan, Shen-Ling (1, 2); Liu, Wei (1, 2); Zhang, Yu (1, 2);
An, Wei (1, 2)
Author affiliation:(1) State Key Laboratory of Environmental Aquatic Chemistry, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085,
China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:An, Wei(anwei@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1835-1841
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on the drinking water quality survey data of China's major cities, the
existing disease burden calculation method was improved and disability-adjusted life
years (DALYs) was taken as the end of evaluation to assess the health risk of arsenic
contamination level. The results showed that the concentration of arsenic in drinking
water of major cities in China was very low (0.53 μg·L<sup>-1</sup>), far below
the national limit (10 μg·L<sup>-1</sup>) and the total lifetime cancer
incidence was 1.76×10<sup>-5</sup>. The order of risks of different kinds of
cancers was: skin cancer (1.53×10<sup>-5</sup>)>lung cancer
(2.25×10<sup>-6</sup>)>liver cancer (2.30×10<sup>-8</sup>)>bladder
cancer (1.34×10<sup>-10</sup>) and the average disease burden was
1.91×10<sup>-6</sup>per person-year. Among them, skin cancer and lung cancer
accounted for 70.2% and 29.0% respectively, and the disease burdens of bladder cancer and
liver cancer were negligible, but the overall cancer risk was still higher than the
recommended level of 10<sup>-6</sup>per person-year by WHO. Although the arsenic level of
drinking water in China was not high, the risk of cancer could not be ignored. Thus more
effective and feasible measures should be taken to reduce arsenic concentration to
protect people's drinking water safety in the future. © 2017, Science Press. All
right reserved.
Number of references:32
Main heading:Health risks
Controlled terms:Arsenic - Biological organs - Dermatology - Diseases - Health - Potable
water - Risk assessment - Water - Water quality
Uncontrolled terms:Arsenic concentration - Arsenic contamination - Arsenic in drinking
waters - Arsenic levels - Bladder cancers - Disability adjusted life years - Disease
burdens - Liver cancers
Classification code:444 Water Resources - 445.2 Water Analysis - 461 Bioengineering
and Biology - 804 Chemical Products Generally - 914.1 Accidents and Accident Prevention
Numerical data indexing:Mass_Density 5.30e-07kg/m3, Percentage 2.90e+01%, Percentage
7.02e+01%, Mass_Density 1.00e-05kg/m3
DOI:10.13227/j.hjkx.201608151
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 229>
Accession number:20173704160939
Title:Degradation Characteristics of Composite CVOCs by Non-thermal Plasma
Authors:Jiang, Li-Ying (1); Zhang, Di (1); Guo, Hai-Qian (1); Miao, Jing-Jing (1); Chen,
Yi-Ling (2); Li, Hui (1)
Author affiliation:(1) College of Environment, Zhejiang University of Technology,
Hangzhou; 310032, China; (2) Lanxi Environmental Monitoring Station, Lanxi; 321100, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1792-1798
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Non-thermal plasma was used as a pretreatment technology for bio-trickling
filter, employing chlorobenzene and dichloroethane as target pollutants. This experiment
was conducted to study the purification effect and degradation product in NTP under
different frequency power supply,to provide a theoretical basis for coupling with
biotechnology. The results showed that the removal efficiency for mixed waste gas in the
plasma first increased and then decreased with the increase of the SIE. The maximum
energy efficiency was obtained at 6 111 J·L<sup>-1</sup>under high frequency power
and 7 167 J·L<sup>-1</sup>under low frequency condition, respectively. Extending
residence time caused a rise in mixed gas removal efficiency, but the removal load didn't
always increase and the highest removal load was observed with the residence time of 5 s,
so 5 s was regarded as the optimal reaction condition for the subsequent analysis in this
study. The degradation products were analyzed under the specific conditions. Experimental
results showed that the amount and the selectivity of carbon dioxide both increased with
the increase of SIE in the plasma reactor. The amount of ozone increased to a maximum
value and then decreased with the increase of SIE in the plasma reactor, and the amount
of ozone produced in low-frequency power plasma was lower than that in high-frequency
power. The trend of TOC values was similar to the trend of ozone generation, indicating
that the best water solubility was obtained at the highest energy efficiency. ©
2017, Science Press. All right reserved.
Number of references:22
Main heading:Energy efficiency
Controlled terms:Carbon - Carbon dioxide - Degradation - Ozone - Plasma applications -
Plasmas - Water treatment
Uncontrolled terms:Bio-trickling filters - Chlorobenzene - Degradation characteristics -
Dichloroethane - Frequency - High frequency power - Optimal reaction condition -
Pretreatment technology
Classification code:445.1 Water Treatment Techniques - 525.2 Energy Conservation -
802.2 Chemical Reactions - 804 Chemical Products Generally - 804.2 Inorganic Compounds
- 932.3 Plasma Physics
Numerical data indexing:Time 5.00e+00s
DOI:10.13227/j.hjkx.201610228
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 230>
Accession number:20173704160974
Title:Effect of Dicyandiamide on N<inf>2</inf>O Emission in Fallow Paddy Field and Rape
Cropping
Authors:Wu, Yan-Zheng (1, 3); Zhang, Miao-Miao (1); Qin, Hong-Ling (2); Chen, Chun-Lan
(2); Wang, Juan (1); Wei, Wen-Xue (2); Li, Yong (1)
Author affiliation:(1) Changsha Research Station for Agricultural & Environmental
Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha;
410125, China; (2) Key Laboratory of Agro-ecological Processes in Subtropical Regions,
Taoyuan Station of Agro-ecology Research, Institute of Subtropical Agriculture, Changsha;
410125, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Li, Yong(yli@isa.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2084-2092
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The emissions of greenhouse gas in winter are often neglected, and the latest
research results showed that N<inf>2</inf>O emissions in fallow paddy field and winter
oilseed rape are still large, research on mitigating the N<inf>2</inf>O flux and the
mechanism behind them is of significance for mitigating N<inf>2</inf>O emissions from
agricultural soil. By using static chamber techniques and molecular biology techniques,
the N<inf>2</inf>O emission as well as the community composition and abundance of ammonia
oxidizing archaea (AOA) and ammonia oxidizing bacteria (AOB) from fallow paddy field,
rape cropping with and without DCD treatment in Taoyuan agricultural ecological
experiment station of the Chinese Academy of sciences were measured. The results showed
that the addition of DCD significantly inhibited N<inf>2</inf>O emissions in fallow paddy
field and rape cropping by 36.7% and 23.6%, respectively. The application of DCD in
fallow paddy field inhibited the abundance of AOA and AOB by 59.3% and 73.7%,
respectively, but only changed the community structure of AOA. The addition of DCD in
rape cropping only changed the community structure and inhibited the abundance of AOB.
This research showed that DCD application could effectively mitigate the N<inf>2</inf>O
emissions in fallow paddy field and winter rape cropping under different mitigation
mechanisms. © 2017, Science Press. All right reserved.
Number of references:36
Main heading:Gas emissions
Controlled terms:Agriculture - Ammonia - Bacteria - Greenhouse gases - Microorganisms -
Molecular biology - Social sciences
Uncontrolled terms:Ammonia oxidizing archaea (AOA) - Ammonia oxidizing bacteria - Archaea
- Chinese Academy of Sciences - Dicyandiamide - Fallow paddy field - Rape cropping -
Static chamber technique
Classification code:451.1 Air Pollution Sources - 461.9 Biology - 804.2 Inorganic
Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control - 971
Social Sciences
Numerical data indexing:Percentage 2.36e+01%, Percentage 3.67e+01%, Percentage 5.93e+01%,
Percentage 7.37e+01%
DOI:10.13227/j.hjkx.201611116
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 231>
Accession number:20173704160969
Title:Effect of Temperature on Nitrogen Removal Performance of Marine Anaerobic Ammonium
Oxidizing Bacteria
Authors:Zhou, Tong (1); Yu, De-Shuang (1); Li, Jin (1); Wu, Guo-Dong (1); Wang, Xiao-Jing
(1)
Author affiliation:(1) School of Environmental Science and Engineering, Qingdao
University, Qingdao; 266071, China
Corresponding author:Li, Jin(ljin0532@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2044-2051
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The effect of temperature on the nitrogen removal performance of marine
anaerobic ammonium oxidizing bacteria processing sewage seawater was studied by employing
an ASBR reactor, and the dynamic characteristics of the marine anaerobic ammonium
oxidizing bacteria at different temperatures were simulated by modified Logistic model.
The experimental results indicated that the nitrogen removal performance was affected
little at 25-35℃. The total nitrogen removal efficiency (TNRE) remained at
(82±2)% and the total nitrogen removal rate (TNRR) was stabilized at
(0.62±0.01) kg·(m<sup>3</sup>·d)<sup>-1</sup>. When the temperature
was 20℃, TNRE increased from 59% at the beginning to 79% after 13 days. This
indicated that the marine anammox bacteria still had strong ability of nitrogen removal,
and the reactor in the low temperature treatment of sewage containing seawater had a good
potential. However, when the temperature dropped to 10-15℃, the nitrogen removal
performance of the reactor was inhibited. TNRE decreased to (40±8)% and
(11±4)%, respectively. Besides, TNRR also decreased to (0.30±0.04)
kg·(m<sup>3</sup>·d)<sup>-1</sup>and (0.08±0.03) kg·
(m<sup>3</sup>·d)<sup>-1</sup>, respectively. According to the Arrhenius equation,
the activation energy for marine anaerobic ammonium oxidation reaction was 26
kJ·mol<sup>-1</sup>at 25-35℃, and the activation energy of marine anaerobic
ammonium oxidation reaction was 76 kJ·mol<sup>-1</sup>at 10-25℃. In
addition, dynamic analysis was performed by Logistic model and the NRE and effluent total
nitrogen concentration (c<inf>eff</inf>) at different temperatures were forecasted. The
correlation coefficient R<sup>2</sup>was between 0.966 8 and 0.995 7. © 2017,
Science Press. All right reserved.
Number of references:30
Main heading:Nitrogen removal
Controlled terms:Activation energy - Bacteria - Chemical activation - Enzyme kinetics -
Nitrogen - Seawater - Seawater effects - Sewage - Temperature - Wastewater treatment
Uncontrolled terms:Ammonium oxidizing bacteria - Anaerobic ammonium oxidation -
Correlation coefficient - Dynamic characteristics - Low temperature treatment - Marine
anammox bacteria - Modified Logistic model - Removal performance
Classification code:452.1 Sewage - 452.4 Industrial Wastes Treatment and Disposal -
471.4 Seawater, Tides and Waves - 641.1 Thermodynamics - 804 Chemical Products
Generally
Numerical data indexing:Age 3.56e-02yr, Percentage 5.90e+01%, Percentage 7.90e+01%
DOI:10.13227/j.hjkx.201610055
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 232>
Accession number:20173704160933
Title:Modeled Deposition of Fine Particles in Human Airway in Northern Suburb of Nanjing
Authors:Liang, Jing-Shu (1); An, Jun-Lin (1); Wang, Hong-Lei (1); Zhang, Yu-Xin (1);
Wang, Jun-Xiu (1); Shi, Shuang-Shuang (1); Wang, Xiao (1)
Author affiliation:(1) Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters, Key Laboratory for Aerosol-Cloud-Precipitation of China
Meteorological Administration, Nanjing University of Information Science and Technology,
Nanjing; 210044, China
Corresponding author:An, Jun-Lin(junlinan@nuist.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1743-1752
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The particles number concentrations were determined by Wide-range Particle
Spectrometer (WPS) in northern suburb of Nanjing in January and April 2015. The
information of size distributions was applied in the multiple-path particle dosimetry
model (MPPD) v.3.04 to quantify deposition fractions (DF) and number concentration (NC)
depositions of fine particles in different regions of human airway, at different air
quality levels, at rest and exercise. DF of nucleation mode and Aitken mode at rest and
exercise were similar, while DF of accumulation mode at exercise was 2.49 times of that
at rest. DF of nucleation mode and Aitken mode in pulmonary (PUL) was the highest, about
48.17% of total deposition fractions (TDF) at rest and 54.23% of TDF at exercise. DF of
accumulation mode in head was the highest, about 41.23% of TDF at rest and 80.47% of TDF
at exercise. The particle NC deposition in human airway in winter was lower than that in
spring, and the total NC deposition in 3 regions was in the order of
PUL>tracheobronchial(TB)>head. Compared with resting, nucleation mode deposition in
PUL and accumulation mode deposition in TB and head increased at exercise. The worse the
air quality, the higher the deposition growth rate of exercising to resting in head. DF
difference among regions was mainly due to the different physiological parameters, while
NC deposition difference was mainly due to the different particle NC in the local
environment. © 2017, Science Press. All right reserved.
Number of references:36
Main heading:Deposition
Controlled terms:Air quality - Nucleation - Particles (particulate matter) -
Physiological models - Respiratory system
Uncontrolled terms:Deposition fractions - Fine particles - Human airway - MPPD mode -
Number concentration
Classification code:451.2 Air Pollution Control - 461.2 Biological Materials and Tissue
Engineering - 802.3 Chemical Operations - 933.1.2 Crystal Growth - 951 Materials
Science
Numerical data indexing:Percentage 4.12e+01%, Percentage 4.82e+01%, Percentage 5.42e+01%,
Percentage 8.05e+01%
DOI:10.13227/j.hjkx.201610040
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 233>
Accession number:20173704160960
Title:Fate of Eleven Phthalic Acid Esters in Aerobic Sewage Treatment System
Authors:Zhou, Lin-Jun (1, 2); Gu, Wen (3); Liu, Ji-Ning (1); Shi, Li-Li (1); Xu, Yan-Hua
(2)
Author affiliation:(1) Key Laboratory of Pesticide Environment Assessment and Pollution
Control, Nanjing Institute of Environmental Sciences, Ministry of Environmental
Protection, Nanjing; 210042, China; (2) College of Environment, Nanjing Technology
University, Nanjing; 211816, China; (3) Nanjing Environmental Safety Tech Co., Ltd.,
Nanjing; 210042, China
Corresponding author:Xu, Yan-Hua(xuyh@njtech.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1972-1981
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Phthalic acid esters have potential environmental risk due to their endocrine
disrupting effect. The biodegradable and removal characteristics of 11 phthalicacidesters
were studied. The results showed that dimethyl phthalate(DMP), dimethoxyethyl phthalate
(BMEP), diethyl phthalate(DEP), dibutyl phthalate (DBP), diisobutyl phthalate(DIBP),
dinamyl phthalate (DNPP), di-n-hexyl phthalate(DNHP)and bis (2-ethylhexyl) phthalate
(DEHP) had ready biodegradability, dinonyl phthalate (DNP)and dicyclohexyl phthalate
(DHP)could be biodegraded but did not pass the 10 d window-period, and only 43.5% of
diphenyl phthalate (DPP) was biodegraded on 28d. The degradation curves of 11 PAEs all
obeyed typical first-order kinetics in aerobic sludge kinetics test, with the correlation
coefficient r<sup>2</sup>>0.96, the degradation rate constant was between 0.021-1.11
h<sup>-1</sup>, and the degradation half-life was between 0.625-32.7 h. In aerobic sludge
simulation test, the removal rates of 10 PAEs were >80% at hydraulic detention time of
12h, except that DNPP was only 55%-70%. The removal rates of all PAEs reached 90% at
hydraulic detention time of 24h. The relative high exposure in effluent for DMP, DEP,
DIBP, DBP and DEHP was found by using GC/MS, with the residue concentrations of ND-44.0,
ND-12.0, 60.4-594, 88.0-823 and 130-728 ng·L<sup>-1</sup>, respectively. The
results from STP model prediction showed that the removal in STP was mainly contributed
by biodegradation, but for DPP, DNP and DEHP, the absorption removal was also an
important removal way. © 2017, Science Press. All right reserved.
Number of references:24
Main heading:Esters
Controlled terms:Biodegradability - Biodegradation - Carboxylic acids - Degradation -
Endocrine disrupters - Models - Rate constants - Sewage treatment
Uncontrolled terms:Correlation coefficient - Degradation rate constants - Dibutyl
phthalates - Environmental risks - First order kinetics - Phthalic acid esters - Removal
characteristics - Removal rate
Classification code:452.2 Sewage Treatment - 461.7 Health Care - 801.2 Biochemistry -
802.2 Chemical Reactions - 804.1 Organic Compounds
Numerical data indexing:Mass_Density 1.30e-07kg/m3 to 7.28e-07kg/m3, Percentage 4.35e
+01%, Percentage 5.50e+01% to 7.00e+01%, Percentage 9.00e+01%, Time 2.25e+03s to 1.18e
+05s, Time 4.32e+04s, Time 8.64e+04s
DOI:10.13227/j.hjkx.201610021
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 234>
Accession number:20173704160981
Title:Enhanced Sorption of Cetirizine to Loessial Soil Amended with Biochar
Authors:Wu, Zhi-Juan (1); Bi, Er-Ping (1)
Author affiliation:(1) Beijing Key Laboratory of Water Environmental Engineering, School
of Water Resources and Environment, China University of Geosciences (Beijing), Beijing;
100083, China
Corresponding author:Bi, Er-Ping(bi@cugb.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2154-2160
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Biochar could be used as a stabilizer to control the migration and
transformation of pollutants in soil and reduce their environmental risks. Cetirizine
(CTZ) was selected as a target pollutant to investigate the effect of biochar on sorption
characteristics of loessial soil by batch experiments. Biochars were produced from walnut
shell at different temperatures and added to soil at different mass ratios. The results
indicated that all biochars showed obviously higher sorption capacity than loessial soil.
The sorption capacity for CTZ was obviously enhanced by soils amended with biochars
produced at 400-700℃, which could be attributed to the increased bulk carbon
content and specific surface area (SA). Sorption of CTZ to mixtures, excluding the soils
amended with biochar produced at 300℃, was lower than the theoretical value. This
could be due to the cross-effect between soil components and biochar. At the same time,
the organic matter and native sorbates in soil may block or compete for adsorption sites
on biochar surface. Biochars would be helpful to stabilize the loessial soil contaminated
with CTZ. However, for relatively low concentration of CTZ in aqueous solution and soils
amended with relatively high biochar mass ratio, the sorption capacity of the mixtures
could be overestimated theoretically without considering the cross-effect between soil
and biochar. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Soil pollution
Controlled terms:Carbon - Mixtures - Pollution - Soils - Solutions - Sorption
Uncontrolled terms:Bio chars - Cetirizine - Environmental risks - Low concentrations -
Sorption capacities - Sorption characteristics - Target pollutants - Theoretical values
Classification code:483.1 Soils and Soil Mechanics - 802.3 Chemical Operations - 804
Chemical Products Generally
DOI:10.13227/j.hjkx.201611132
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 235>
Accession number:20173704160942
Title:Characteristics of Stable Isotope in Precipitation and Its Relationship with ENSO
in Shanghai
Authors:Dong, Xiao-Fang (1); Deng, Huang-Yue (1); Zhang, Luan (1); Zhu, Zhi-Peng (1);
Wang, Lin (1); Zheng, Xiang-Min (1); Zhou, Li-Min (1)
Author affiliation:(1) Key Laboratory of Geographic Information Science, Ministry of
Education, School of Geographical Sciences, East China Normal University, Shanghai;
200241, China
Corresponding author:Zhou, Li-Min(lmzhou@geo.ecnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1817-1827
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A total of 70 precipitation samples were collected from August 2014 to August
2015 in Shanghai and the oxygen and hydrogen isotope of precipitation were analyzed. The
relationship between the δ<sup>18</sup>O and deuterium excess of precipitation and
ENSO events was addressed. The results showed that δD and δ<sup>18</sup>O of
precipitation in Shanghai were higher in winter and spring than in summer and fall. The
slope of meteoric water line with these data was a little smaller than the global
meteoric water line. The main reason could be the unbalanced secondary evaporation in the
process of precipitation. The correlation between the δ<sup>18</sup>O in
precipitation and temperature and precipitation varied in different time scales. On a
seasonal scale, this work revealed that there was no significant temperature effect in
winter, but significant precipitation effect was found in the annual scales, which was
obviously affected by the atmospheric circulation. δ<sup>18</sup>O values and
deuterium excess in precipitation recorded the La Niña and El Niño
conversion process. During the La Niña event, the δ<sup>18</sup>O and d
values were more negative than those in the El Niño event. © 2017, Science
Press. All right reserved.
Number of references:31
Main heading:Nickel
Controlled terms:Climatology - Deuterium - Isotopes - Meteorology - Water piping systems
Uncontrolled terms:Atmospheric circulation - ENSO - Meteoric water lines - Oxygen and
hydrogen isotopes - Precipitation effects - Precipitation samples - Shanghai - Stable
isotopes
Classification code:443 Meteorology - 446.1 Water Supply Systems - 548.1 Nickel
DOI:10.13227/j.hjkx.201609152
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 236>
Accession number:20173704160972
Title:Comparative Studies on Soil Actinobacterial Biodiversity After Re-vegetation in the
Urban and Rural Hydro-fluctuation Zone of the Three Gorges Reservoir Region
Authors:Qin, Hong (1); Ren, Qing-Shui (1); Yang, Wen-Hang (1); Li, Chang-Xiao (1)
Author affiliation:(1) Key Laboratory of Eco-Environments in the Three Gorges Reservoir
Region(Ministry of Education), School of Life Sciences, Southwest University, Chongqing;
400715, China
Corresponding author:Li, Chang-Xiao(lichangx@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2065-2073
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study aimed to understand the soil actinobacterial community diversity in
the urban and rural hydro-fluctuation zone of the Three Gorges Reservoir region. The
hydro-fluctuation zone of Chongqing Great Theatre in Jiangbei District and the Ruxi river
basin in Zhong County, Chongqing, was chosen as the study area. Soil samples were
collected in June 2015, to measure actinobacterial biodiversity using the terminal-
restriction fragment length polymorphism (T-RFLP) molecular method. Results showed that:
(1) The actinobacterial biodiversity was different in the urban and rural hydro-
fluctuation zone after artificial vegetation restoration. The actinobacterial
biodiversity of the urban hydro-fluctuation zone was significantly higher than that of
the rural hydro-fluctuation zone (P<0.05), which was most obvious in the surface soil.
(2) The actinobacterial biodiversity of woodland was higher than that of grassland, but
there was no significant difference in the actinobacterial biodiversity among the three
soil layers in both the urban and rural hydro-fluctuation zone. (3) The dominant species
of actinomycetes was different in different samples. (4) Redundancy analysis and the
Monte-Carlo test revealed that water content and available nitrogen (AN) played a
critical role in influencing actinobacterial biodiversity in the urban hydro-fluctuation
zone (P<0.05). In contrast, the water content, organic matter (OM), available nitrogen
(AN) and available phosphorus (AP) played a critical role in influencing actinobacterial
biodiversity in the rural hydro-fluctuation zone of the Three Gorges Reservoir region
(P<0.05). Thus, we concluded that the actinobacterial biodiversity of the urban
hydro-fluctuation zone was significantly higher than that of the rural hydro-fluctuation
zone in the Three Gorges Reservoir region, and such a result was attributed to the
increased human disturbance and soil nutrients. © 2017, Science Press. All right
reserved.
Number of references:61
Main heading:Rural areas
Controlled terms:Biodiversity - Nitrogen - Reservoirs (water) - Soils - Vegetation
Uncontrolled terms:Artificial vegetation - Available phosphorus - Community diversity -
Comparative studies - Grassland - Terminal restriction fragment length polymorphisms -
Three Gorges Reservoir region - Woodland
Classification code:441.2 Reservoirs - 454 Environmental Engineering - 483.1 Soils and
Soil Mechanics - 804 Chemical Products Generally
DOI:10.13227/j.hjkx.201609072
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 237>
Accession number:20173704160963
Title:Comparison of Operating Performance of Partial Nitritation Systems with Two
Different Inhibition Strategies
Authors:Li, Hui-Juan (1); Peng, Dang-Cong (1); Chen, Guo-Yan (1); Wang, Bo (1); Yao, Qian
(1); Zhuo, Yang (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1997-2005
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Two SBRs which were under high ammonia loading [1 kg·
(m<sup>3</sup>·d)<sup>-1</sup>] and different dual inhibition with feed-batch were
employed to study how to control the stability of partial nitritation system. The
experimental result showed that the dual inhibition of FNA and DO or FA and DO could
implement partial nitrification process at 35℃±1℃ and the ammonia
concentration of 1 000 mg·L<sup>-1</sup>. The effluent NO<inf>2</inf><sup>-
</sup>-N/NH<inf>4</inf><sup>+</sup>-N ratio was about 1, and the effluent
NO<inf>3</inf><sup>-</sup>-N concentration was close to 0, which was suitable for the
appropriate influent for the ANAMMOX. In R1, under the dual inhibition of high FA and low
DO concentration, the nitrite oxidizing rate was reduced from 28.16 mg·
(g·h)<sup>-1</sup>to 0.3 mg·(g·h)<sup>-1</sup>(calculated as
NO<inf>2</inf><sup>-</sup>-N, the same as below). The ammonia oxidizing rate decreased by
43.60%, which was stable at about 20 mg·(g·h)<sup>-1</sup>(calculated as
NH<inf>4</inf><sup>+</sup>-N, the same as below). In R2, under the dual inhibition of
high FNA and low DO concentration, the nitrite oxidizing rate reduced from 12.37
mg·(g·h)<sup>-1</sup>to 0.02 mg·(g·h)<sup>-1</sup>. But the
ammonia oxidizing rate remained at a higher level [45 mg·(g·h)<sup>-
1</sup>]. Comparing the nitrification performance of the two SBRs under different control
strategies, the dual inhibition of high FNA and low DO concentration had the advantages
of short cultivation period, high biological activity and stable operation. It is
therefore more suitable for the achievement of the partial nitrification. © 2017,
Science Press. All right reserved.
Number of references:42
Main heading:Ammonia
Controlled terms:Batch reactors - Bioactivity - Nitrification - Nitrogen compounds -
Nitrogen oxides - Nitrogen removal - Wastewater treatment
Uncontrolled terms:Ammonia nitrogen - Free ammonia - Free nitrous acid (FNA) - Partial
nitrification - Sequencing batch reactors
Classification code:452.4 Industrial Wastes Treatment and Disposal - 461.6 Medicine and
Pharmacology - 802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions - 804.2
Inorganic Compounds
Numerical data indexing:Mass_Density 1.00e+00kg/m3, Percentage 4.36e+01%
DOI:10.13227/j.hjkx.201611128
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 238>
Accession number:20173704160978
Title:Spatial Distribution and Potential Ecological Risk Assessment of Heavy Metals in
Sediments of Suya Lake
Authors:Zhang, Peng-Yan (1, 2); Kang, Guo-Hua (1); Pang, Bo (1); Guo, Yi (1); He, Jian-
Jian (1); Qin, Ming-Zhou (1)
Author affiliation:(1) College of Environment and Planning, Henan University, Kaifeng;
475004, China; (2) Collaborative Innovation Center of Three-aspect Coordination of
Central Plain Economic Region, Zhengzhou; 410001, China
Corresponding author:Qin, Ming-Zhou(btweek@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2125-2135
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to study the pollution status of heavy metals in sediments of Suya
Lake, the concentrations of heavy metals Cu, Cd, Cr, Zn, Pb and Ni in sediments were
measured at three locations in the center, middle and periphery of Suya Lake, the content
characteristics and the pollution status of heavy metals in the study area were analyzed
by the method of geoaccumulation index and potential ecological risk index, and the
distribution and interrelation of heavy metals were evaluated by Kriging method and
correlation analysis. The results showed that, on average, Zn was the highest, 112.87
mg·kg<sup>-1</sup>, followed by Cr, the smallest average of Cd was only 0.41
mg·kg<sup>-1</sup>. In addition to Cd and Cr, the coefficients of variation of Cu,
Zn, Pb and Ni were relatively small, ranging from 24% to 31%, with moderate degree of
variation. The coefficients of variation of Cd and Cr were 50.41% and 41.92%,
respectively, and the spatial variation was obvious, which indicated that the variation
of Cd and Cr was more significant than the others; (2)The heavy metals Cu, Cd, Cr, Zn, Pb
and Ni had a strong linear relationship, and there was a significant positive
correlation, and six kinds of heavy metals had some homologous characteristics, with a
common external input; (3)The main pollution elements in the study area were Cd, Cr and
Zn, the pollution degree was relatively serious, and the scope was extensive. Among them,
the pollution degree of Cd was the most serious, the overall pollution level was
moderate, and the pollution degree in some sample areas reached up to severe pollution,
the pollution status of Cr, Zn and Pb was relatively mild, the pollution status of Cu, Pb
and Ni was better, and there was no ecological risk; (4)On the whole, the pollution level
of the northeastern part of Suya Lake was relatively light, the degree of pollution in
the southwest was relatively serious, showing a significant spatial distribution
characteristics of decreasing from southwest to northeast, the contents of heavy metals
in the samples were higher than those in the southwest of the reservoir, while the
northeastern part of the periphery was the area with accumulation of low concentrations
of heavy metals., and there was no pollution from Cu, Cr, Zn and Ni. © 2017, Science
Press. All right reserved.
Number of references:36
Main heading:Copper
Controlled terms:Cadmium - Correlation methods - Ecology - Heavy metals - Lake pollution
- Lakes - Lead - Nickel - Pollution - Reservoirs (water) - Risk assessment - Sediments -
Spatial distribution - Zinc
Uncontrolled terms:Coefficients of variations - Correlation analysis - Degree of
pollutions - Distribution characteristics - Geo-accumulation index - Linear relationships
- Positive correlations - Potential ecological risk
Classification code:441.2 Reservoirs - 453 Water Pollution - 454.3 Ecology and
Ecosystems - 483 Soil Mechanics and Foundations - 531 Metallurgy and Metallography -
544.1 Copper - 546.1 Lead and Alloys - 546.3 Zinc and Alloys - 548.1 Nickel - 549.3
Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 914.1
Accidents and Accident Prevention - 921 Mathematics - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 2.40e+01% to 3.10e+01%, Percentage 4.19e+01%,
Percentage 5.04e+01%
DOI:10.13227/j.hjkx.201610116
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 239>
Accession number:20173704160941
Title:Pollution Risk of Heavy Metals in Dust from the Building Along Elevated Road: A
Case Study in Changzhou
Authors:Yao, Jing-Bo (1); Wang, Ming-Xin (1); Qi, Jin-Di (1); Sun, Xiang-Wu (1); Zhang,
Wen-Yi (1)
Author affiliation:(1) College of Environmental & Safety Engineering, Changzhou
University, Changzhou; 213164, China
Corresponding author:Wang, Ming-Xin(wmxcau@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1807-1816
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Totally 126 samples of windowsill dust were collected from different floors
along elevated road in Changzhou. The concentrations of Cu, Zn, Pb, Cd, Ni and Cr were
determined, and the vertical distribution and chemical speciation were analyzed. The
enrichment factor, bioaccessiblity, potential ecological risk and health risk were
evaluated. The results showed that the average contents of Cu, Zn, Pb, Cd, Ni and Cu were
181.95, 709.99, 211.24, 2.76, 101.59 and 257.55 mg·kg<sup>-1</sup>respectively,
which were all higher than the background value. The enrichment factor of Cd was 33.05,
with enrichment degree of strongly enriched. The enrichment degrees of Cu, Pb and Zn were
all significantly enriched. These four heavy metals may come not only from transportation
source, but also from natural source and regional industrial polluted gas. The enrichment
factors of Ni and Cr were low, which may result from natural source. With the elevation
of house height, the concentration of Cd increased, the concentrations of Pb and Zn
increased first and then decreased, while Cu showed no significant differences. Zn, Cd,
Cu and Pb mainly existed in the active form, while Ni and Cr mainly existed in the
residual form. The bioaccessiblity of Zn and Cd was high, while that of other heavy
metals was low. The modified potential ecology risk evaluation results showed that the
risk of Cd was extremely high, and contributed mainly to the potential risk index of
multi-element. The Cd from the windowsill of high height showed higher potential
ecological risk. The carcinogenic risk of Cr to children was higher than the threshold
value, while the carcinogenic risk and non-carcinogenic risk of other metals to children
and adults were all below the safety thresholds. © 2017, Science Press. All right
reserved.
Number of references:50
Main heading:Pollution
Controlled terms:Cadmium - Chemical analysis - Chemical speciation - Dust - Ecology -
Health risks - Heavy metals - Lead - Natural gas transportation - Nickel - Roads and
streets - Transportation - Zinc
Uncontrolled terms:Background value - Carcinogenic risk - Different floors - Elevated
road - Enrichment factors - Potential ecological risk - Safety threshold - Vertical
distributions
Classification code:406.2 Roads and Streets - 451.1 Air Pollution Sources - 454.3
Ecology and Ecosystems - 461.7 Health Care - 522 Gas Fuels - 531 Metallurgy and
Metallography - 546.1 Lead and Alloys - 546.3 Zinc and Alloys - 548.1 Nickel - 549.3
Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 802.2 Chemical
Reactions
DOI:10.13227/j.hjkx.201611043
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 240>
Accession number:20173704160945
Title:Health Risk Assessment of Microcystins from Drinking Water Source by Monte Carlo
Simulation Method
Authors:Wang, Yang (1, 2); Xu, Ming-Fang (1, 2); Geng, Meng-Meng (1); Li, Ming (1); Chen,
Geng-Nan (1)
Author affiliation:(1) Life Science and Technology College, Jinan University, Guangzhou;
510632, China; (2) Research Center of Emergency Management, Jinan University, Guangzhou;
510632, China
Corresponding author:Xu, Ming-Fang(xumingfang@jnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1842-1851
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To investigate the microcystins(MCs: MC-RR, MC-LR and MC-YR) exposure from
drinking water source and to assess the health risk using Monte Carlo simulation method.
90 samples randomly collected from five sample points set along the river were determined
using the national standard method (GB/T 20466-2006) during the period of January to June
2016. Professional risk assessment software @Risk7.0 was used to evaluate the dietary
intake (exposure) risk of MCs based on building a nonparametric probabilistic evaluation
model. First, 90 samples with the MCs were collected for fitting of distribution and the
optimal fitting distribution model was selected from the results of three statistical
test methods: the Chi-Squared test, the Anderson-Darling test and the Kolmogorov-Smirnov
test. Of the 90 water samples tested, the most frequently detectable MCs was MC-RR with
the detectable rate of up to 51.11% within the content range of 0.001 7-0.386 3
μg·L<sup>-1</sup>, followed by 47.78% of MC-LR within the range of 0.028 5-
0.279 6 μg·L<sup>-1</sup>, and 21.11% of MC-YR within 0.003 0-0.136 2
μg·L<sup>-1</sup>. These results indicated that vast majority of MCs in testing
samples were at relatively low levels with the highest concentration of MC-RR at 0.386 3
μg·L<sup>-1</sup>and MC-YR concentration was the lowest from drinking water
source. The fit distribution of MC-LR concentration was the ExtValueMin(0.113 91, 0.098
462) and that of MC-RR was Logistic(0.058 064, 0.053 044)(the first number was μ as
the position parameter, the second number was σ as the scale parameter). The result
indicated that health risks of MC-LR from drinking water source were higher than those of
MC-RR and MCs pollution and would lead to high potential health risks especially for
children. The health risks caused by the MC-LR from drinking water source for children
were significantly higher than the maximum allowance levels recommended by USEPA
(1×10<sup>-4</sup>), and the health risks caused by the MC-LR from drinking water
source for adults were significantly higher than the maximum allowance levels recommended
by ICRP(5×10<sup>-5</sup>). Therefore, it is necessary to strengthen the protection
and monitoring of drinking water source for effective control of water pollution and
protection of human health. © 2017, Science Press. All right reserved.
Number of references:23
Main heading:Health risks
Controlled terms:Health - Intelligent systems - Monte Carlo methods - Pollution -
Pollution control - Potable water - Risk assessment - River pollution - Testing - Water
- Water pollution - Water pollution control
Uncontrolled terms:@Risk7.0 - Anderson-Darling tests - Distribution models - Drinking
water sources - Kolmogorov-Smirnov test - Microcystins - Monte Carlo simulation methods -
Probabilistic evaluation
Classification code:444 Water Resources - 453 Water Pollution - 453.2 Water Pollution
Control - 461.6 Medicine and Pharmacology - 461.7 Health Care - 723.4 Artificial
Intelligence - 914.1 Accidents and Accident Prevention - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 2.11e+01%, Percentage 4.78e+01%, Percentage 5.11e+01%
DOI:10.13227/j.hjkx.201608167
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 241>
Accession number:20173704160970
Title:Nitrogen Removal Performance and Microbial Community Analysis of Activated Sludge
Immobilization
Authors:Xu, Xiao-Yi (1, 2); You, Xiao-Lu (1, 2); Lü, Chen-Pei (1, 2); Wang, Bin (1,
2); Hu, Bi-Bo (1, 2)
Author affiliation:(1) College of Urban Construction and Environmental Engineering,
Chongqing University, Chongqing; 400045, China; (2) Key Laboratory of Three Gorges
Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University,
Chongqing; 400045, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2052-2058
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Immobilization of activated sludge was used to further remove nitrogen from
secondary effluent. Intermittent sequencing batch reactor experiments were conducted to
measure nitrogen removal in synthetic wastewater with initial total nitrogen
concentrations (TN) of 10-45 mg·L<sup>-1</sup>and C/N ratio of 1.78-10, and
microbial community characteristic of embedding beads was investigated. When the packing
ratio of embedding beads was 10%, and the temperature of wastewater, dissolved oxygen
(DO), initial concentration of chemical oxygen demand (COD) were maintained at 10-
15℃, 2-4 mg·L<sup>-1</sup>, and 80-100 mg·L<sup>-1</sup>,
respectively, the results showed that the maximum total nitrogen removal loads ranged
from 7.78 to 23.18 mg·(L·h)<sup>-1</sup>during the stable phase. SEM
observations showed that the embedding beads were highly porous and microorganisms
adhered to the interior and external surface of embedding beads, demonstrating that
embedding beads acted as an ideal support material. Based on high-throughput sequencing
analysis, the structure of microbial communities in the beads'interior and exterior
changed significantly compared with embedding activated sludge. The advantage of
denitrifying bacteria in embedding beads was obvious and the microbial diversity was
good. Some microorganisms which can conduct both heterotrophic nitrification and aerobic
denitrification, were identified. These processes may facilitate pathways for
untraditional biological denitrification in the beads'interior. © 2017, Science
Press. All right reserved.
Number of references:30
Main heading:Nitrogen removal
Controlled terms:Activated sludge process - Bacteria - Batch reactors - Chemical oxygen
demand - Denitrification - Dissolved oxygen - Effluents - Microorganisms - Nitrogen -
Throughput
Uncontrolled terms:Advanced treatment - Aerobic denitrification - Biological
denitrification - Heterotrophic nitrification - High-throughput sequencing - Microbial
community analysis - Microbial properties - Sequencing batch reactors
Classification code:452.2 Sewage Treatment - 452.3 Industrial Wastes - 461.9 Biology -
802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions - 804 Chemical Products
Generally
Numerical data indexing:Mass_Density 1.00e-02kg/m3 to 4.50e-02kg/m3, Mass_Density 2.00e-
03kg/m3 to 4.00e-03kg/m3, Mass_Density 8.00e-02kg/m3 to 1.00e-01kg/m3, Percentage 1.00e
+01%
DOI:10.13227/j.hjkx.201611016
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 242>
Accession number:20173704160936
Title:Spatial Distribution Characteristics of NMHCs in Spring in Cangzhou City
Authors:Duan, Jing-Chun (1); Zhou, Xue-Ming (2, 3); Zhang, He-Feng (1); Tan, Ji-Hua (2,
3); Hu, Jing-Nan (1); Chai, Fa-He (1)
Author affiliation:(1) State Key Laboratory of Environmental Criteria and Risk
Assessment, Chinese Research Academy of Environmental Sciences, Beijing; 100012, China;
(2) College of Resources and Environment, University of Chinese Academy of Sciences,
Beijing; 100049, China; (3) Research Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing; 100085, China
Corresponding author:Tan, Ji-Hua(tanjh@ucas.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1769-1774
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Simultaneous collections of non-methane hydrocarbons (NMHCs) were carried out at
15 sampling sites including urban, suburb and potential pollution areas in Cangzhou City
in spring 2015. The results showed that NMHCs were generally higher in urban areas than
those in suburb and rural areas; the highest concentration of NMHCs was observed at
Cangzhou High-tech zone (urban area); the concentrations of NMHCs were significantly
lower at rural sites than in most urban sites except Hejian site; vehicular emissions
were the main sources of NMHCs in Cangzhou; Cangzhou chemical fertilizer plant and
Cangzhou oil refinery had no significant influence on urban NMHCs during their shutdown
period; Dagang Oilfield, with better oil and gas recovery systems, did not have a
significant impact on urban NMHCs. In general, alkanes, alkenes and aromatics accounted
for 65%, 16% and 19% of NMHCs in Cangzhou City, respectively; xylene (19%), ethylene
(14%), toluene(11%), propylene (5%), isopentane (5%) and isopentene (5%) were the most
dominant contributors to ozone formation potential; aerosol formation potential was
mainly derived from toluene (28%), pinene (28%), xylene(16%), ethylbenzene (9%) and
benzene (9%). © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Urban growth
Controlled terms:Ethylene - Fertilizers - Gas emissions - Hydrocarbons - Methane - Oil
fields - Ozone - Plant shutdowns - Toluene - Volatile organic compounds - Xylene
Uncontrolled terms:Changzhou - Chemical fertilizers - Distribution characteristics -
Non-methane hydrocarbons - Ozone formation potentials - Potential pollutions - Spatial
variations - Vehicular emission
Classification code:403.1 Urban Planning and Development - 512.1.1 Oil Fields - 804
Chemical Products Generally - 804.1 Organic Compounds
Numerical data indexing:Percentage 1.10e+01%, Percentage 1.40e+01%, Percentage 1.60e+01%,
Percentage 1.90e+01%, Percentage 2.80e+01%, Percentage 5.00e+00%, Percentage 6.50e+01%,
Percentage 9.00e+00%
DOI:10.13227/j.hjkx.201608132
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 243>
Accession number:20173704160940
Title:Chemical Compositions and Source Apportionment of Road Dust in Yuncheng
Authors:Wu, Yuan-Yuan (1); Li, Ru-Mei (1); Peng, Lin (2); Duan, Yun (1); Wang, Hai-Jing
(1); Li, Ying-Hui (2); Bai, Hui-Ling (1); Mu, Ling (1)
Author affiliation:(1) College of Environmental Science and Engineering, Taiyuan
University of Technology, Taiyuan; 030024, China; (2) School of Environment and Chemical
Engineering, North China Electric Power University, Beijing; 102206, China
Corresponding author:Duan, Yun(duanyun@tyut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1799-1806
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Samples of particulate sources in Yuncheng including road dust, salt lake dust,
coal dust, soil dust, construction,cement dust and vehicle exhaust dust were collected.
Elements, ions and carbon species in particulate sources samples were analyzed.
Enrichment factors and potential ecological risk assessment were used to analyze the
characteristics of road dust, and chemical mass balance model was applied to identify the
source of road dust. The results showed that, compared with other cities, the proportions
of Na(12.197 0%) and SO<inf>4</inf><sup>2-</sup>(8.597 1%) were relatively high while
that of Si(9.112 3%) was low in road dust in Yuncheng, and enrichment factors showed that
the sources of Pb, Cu, Cr, V, As, Ni, Na and Zn in road dust were obviously influenced by
human activities; the potential ecological risk of heavy metals in road dust was high,
which was affected by anthropogenic sources such as industrial production, the combustion
of fossil fuels and vehicle exhaust; the profiles of coal dust, vehicle exhaust dust,
construction and cement dust were similar to those of other cities, the Na and
SO<inf>4</inf><sup>2-</sup>concentrations in soil dust were relatively high, and the
proportions of Na and SO<inf>4</inf><sup>2-</sup>in salt lake dust were 30.3% and 22.7%
respectively; salt lake dust was the largest contributor (53%) to road dust, followed by
the soil dust (21%), vehicle exhaust dust (8%), construction and cement dust (7%), and
coal dust (5%). © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Coal dust
Controlled terms:Carbon - Cements - Chemical analysis - Coal - Coal combustion - Copper -
Ecology - Fossil fuels - Heavy metals - Lakes - Lead - Particles (particulate matter) -
Risk assessment - Roads and streets - Soil cement - Soils - Transportation - Vehicles
Uncontrolled terms:Chemical compositions - Chemical mass balance model - Road dusts -
Salt lakes - Source profiles
Classification code:406.2 Roads and Streets - 412.1 Cement - 454.3 Ecology and
Ecosystems - 483.1 Soils and Soil Mechanics - 524 Solid Fuels - 531 Metallurgy and
Metallography - 544.1 Copper - 546.1 Lead and Alloys - 804 Chemical Products Generally
- 914.1 Accidents and Accident Prevention - 951 Materials Science
Numerical data indexing:Percentage 0.00e+00%, Percentage 2.10e+01%, Percentage 2.27e+01%,
Percentage 3.03e+01%, Percentage 5.00e+00%, Percentage 5.30e+01%, Percentage 7.00e+00%,
Percentage 8.00e+00%
DOI:10.13227/j.hjkx.201609134
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 244>
Accession number:20173704160953
Title:Effects of Anode Materials on Electricity Generation and Organic Wastewater
Treatment of 6 L Microbial Fuel Cells
Authors:Ding, Wei-Jun (1); Yu, Li-Liang (1); Chen, Jie (1); Cheng, Shao-An (1)
Author affiliation:(1) Department of Energy Engineering, Zhejiang University, Hangzhou;
310027, China
Corresponding author:Cheng, Shao-An(shaoancheng@zju.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1911-1917
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Anode material is one of the most important factors on the application of
microbial fuel cells for wastewater treatment due to its key role in forming
exoelectrogenic biofilm and transferring electrons along with the high investment cost.
In this study, carbon brush (CB), carbon cloth (CC) and graphite felt (GF) were
investigated as alternative anode materials for 6 L single-chamber dual air-cathode
microbial fuel cells (MFCs) in terms of starting-up rate and electricity production with
artificial wastewater and slaughter wastewater. The cost effectiveness of anode materials
was also evaluated. The results showed that anode materials had no obvious effect on the
start-up of MFC. All MFCs finished their started-up on day 24. Using artificial
wastewater [acetate 1 g·L<sup>-1</sup>in 50 mmol·L<sup>-1</sup>phosphate
buffer (PBS)] as substrate, the maximum power densities for the CB, CC and GF-MFCs were
(56.3±1.8) W·m<sup>-3</sup>, (46.0±1.7) W·m<sup>-3</sup>, and
(40.8±1.5) W·m<sup>-3</sup>, while with slaughter wastewater MFCs could
produce (19.5±0.8) W·m<sup>-3</sup>, (16.9±0.6) W·m<sup>-
3</sup>, and (11.9±0.5) W·m<sup>-3</sup>, respectively. COD removals of all
the MFCs were approximately 90% with both artificial wastewater and slaughter wastewater.
The CB-MFCs had a cost of (3.44±0.08) mW·yuan<sup>-1</sup>with the
artificial wastewater and (0.97±0.05) mW·yuan<sup>-1</sup>with slaughter
wastewater, which were 18.6%, 12.8% higher than that of CC-MFCs and 38.7%, 80% higher
than that of GF-MFCs, respectively. These results demonstrate that carbon brush is the
most suitable material used in large-scale MFC. © 2017, Science Press. All right
reserved.
Number of references:36
Main heading:Microbial fuel cells
Controlled terms:Anodes - Artificial graphite - Brush conductors - Cost effectiveness -
Costs - Economic analysis - Electric power generation - Electrodes - Fuel cells - Gas
fuel purification - Power generation - Reactor startup - Wastewater treatment - Water
treatment
Uncontrolled terms:Alternative anode materials - Anode material - Artificial wastewater -
Electricity generation - Electricity production - Maximum power density - Microbial fuel
cells (MFCs) - Organic wastewater treatment
Classification code:445.1 Water Treatment Techniques - 452.4 Industrial Wastes
Treatment and Disposal - 522 Gas Fuels - 621 Nuclear Reactors - 702.2 Fuel Cells -
705.1 Electric Machinery, General - 714.1 Electron Tubes - 804.2 Inorganic Compounds -
911 Cost and Value Engineering; Industrial Economics - 911.2 Industrial Economics
Numerical data indexing:Mass_Density 1.00e+00kg/m3, Molar_Concentration 5.00e+01mol/m3,
Percentage 1.28e+01%, Percentage 1.86e+01%, Percentage 3.87e+01%, Percentage 8.00e+01%,
Percentage 9.00e+01%, Volume 6.00e-03m3
DOI:10.13227/j.hjkx.201611106
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 245>
Accession number:20173704160979
Title:Effects of the Active Components of Humic Acids and Their Proportions on the
Dynamics of Lead Transformation and Availability in Purple Alluvial Soil
Authors:Wang, Qing-Qing (1, 2, 3); Jiang, Zhen-Mao (1, 2, 3); Wang, Jun (1, 2, 3); Wei,
Shi-Qiang (1, 2, 3)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400716, China; (2) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400716, China; (3) Key Laboratory of Eco-environments in Three
Gorges Reservoir Region, Ministry of Education, Chongqing; 400715, China
Corresponding author:Wei, Shi-Qiang(sqwei@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2136-2145
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Humic acids (HAs) play important roles in mediating the occurring forms and
activity of Lead (Pb) in soils. Simulating experiments together with chemical sequential
extraction were carried out to understand the dynamics of lead transformation and
availability in purple alluvial soil as influenced by humic acid (HA) and fulvic acid
(FA) and their ratios (HA/FA). The main results obtained are as following: (1) The
distributions of Pb forms bound by Fe-Mn oxides and organic matter increased, while the
proportions of exchangeable Pb and residual Pb fraction decreased after the establishment
of transformation equilibrium in 60 d. (2)The exchangeable-Pb and carbonate bound Pb
showed highest positive contribution to the availability of Pb in the tested soil; and HA
passivated soil Pb activity by decreasing the proportion of carbonate bound Pb and FA
activated soil Pb by increasing the proportions of exchangeable Pb and carbonate bound
Pb. The passivation or activation roles increased with increasing amount of HA or FA; A
sharp increase of soil Pb availability occurred at FA dosage higher than 1% as C basis,
suggesting that 1% (C) exogenous FA was the change-point for soil Pb activation;
③The overall effects of HAs depended on its ratio of HA/FA at a constant addition
of HAs (1% C). HAs suppressed soil Pb activity at a ratio of HA/FA≥7/3, while they
activated soil Pb activity at a ratio of HA/FA≤5/5. The transformation extent and
direction of Pb in soils differed at various dosage and ratios of HA/FA, resulting in
different overall effects on the Pb availability in soil. © 2017, Science Press. All
right reserved.
Number of references:32
Main heading:Lead
Controlled terms:Availability - Binary alloys - Biological materials - Carbonation -
Chemical activation - Enzyme immobilization - Forming - Iron alloys - Manganese -
Manganese alloys - Organic acids - Passivation - Soils
Uncontrolled terms:Active components - Alluvial soil - Change-points - HA/FA ratio -
Humic acid - Sequential extraction - Sharp increase - Simulating experiments
Classification code:461.2 Biological Materials and Tissue Engineering - 483.1 Soils and
Soil Mechanics - 539.2.1 Protection Methods - 543.2 Manganese and Alloys - 545.2 Iron
Alloys - 546.1 Lead and Alloys - 802.2 Chemical Reactions - 804.1 Organic Compounds
Numerical data indexing:Percentage 1.00e+00%
DOI:10.13227/j.hjkx.201610008
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 246>
Accession number:20173704160965
Title:Effects of Temperature on the Characteristics of Nitrogen and Phosphorus Removal
and Microbial Community in SCSC-S/Fe
Authors:Fan, Jun-Hui (1, 2); Hao, Rui-Xia (1); Zhu, Xiao-Xia (1); Wan, Jing-Jing (1);
Liu, Si-Yuan (1); Wang, Li-Sha (1)
Author affiliation:(1) Key Laboratory of Beijing for Water Quality Science and Water
Environmental Recovery Engineering, College of Architectural Engineering, Beijing
University of Technology, Beijing; 100124, China; (2) Beijing Origin Water Technology
Co., Ltd., Beijing; 100084, China
Corresponding author:Hao, Rui-Xia(haoruixia@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2012-2020
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to investigate the effect of temperature on the cellulose-degrading
bacteria and denitrifying bacteria, the denitrification and phosphorus removal of solid
carbon source of cellulose corncob+sulfur/sponge iron nitrogen and phosphorus removal
composite system, abbreviated as SCSC-S/Fe, was analyzed under different temperature
conditions, and the surface structure and microbial properties of corncob before and
after reaction were analyzed by scanning electron microscope (SEM) and MiSeq high-
throughput sequencing technologies. The results indicated that when temperature increased
from 15, 20, 25 to 30℃, the average TN removal rate of the system increased from
78.88% to 92.70%, the average removal rate of TP increased from 82.58% to 89.15%;
microbial properties showed that the surface reaction after corncob was dominated by
spherical and rod-shaped microorganisms; the proportion of cellulose-degrading bacteria
was 11.01% higher at 30℃ than 20℃, and the proportion of denitrifying
bacteria decreased by 21.26%. It can be seen that the cellulose -degrading bacteria were
more sensitive to the temperature than the denitrification bacteria, and more obviously
affected by the temperature. © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Bacteria
Controlled terms:Biodegradation - Carbon - Cellulose - Denitrification - Microorganisms -
Nitrogen - Nitrogen removal - Phosphorus - Scanning electron microscopy - Surface
reactions - Temperature - Throughput
Uncontrolled terms:Cellulose degrading bacteria - Denitrifying bacteria - Effect of
temperature - Effects of temperature - High-throughput sequencing - Microbial communities
- Nitrogen and phosphorus removal - Temperature conditions
Classification code:461.8 Biotechnology - 461.9 Biology - 641.1 Thermodynamics - 802.2
Chemical Reactions - 804 Chemical Products Generally - 811.3 Cellulose, Lignin and
Derivatives
Numerical data indexing:Percentage 1.10e+01%, Percentage 2.13e+01%, Percentage 7.89e+01%
to 9.27e+01%
DOI:10.13227/j.hjkx.201611007
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 247>
Accession number:20173704160952
Title:Effects of Microbial Fuel Cell Coupled Constructed Wetland with Different Support
Matrix and Cathode Areas on the Degradation of Azo Dye and Electricity Production
Authors:Li, Xue-Xiao (1); Cheng, Si-Chao (1); Fang, Zhou (1); Li, Xian-Ning (1)
Author affiliation:(1) School of Energy and Environment, Southeast University, Nanjing;
210096, China
Corresponding author:Li, Xian-Ning(lxn@seu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1904-1910
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this study, microbial fuel cell coupled constructed wetland (CW-MFC) was
constructed for azo dye reactive brilliant red X-3B degradation and electricity
production. The effects of support matrix and cathode areas on the degradation of X-3B
and the electricity production of CW-MFC were investigated in this work to improve the
performance of CW-MFC. The highest decolorization efficiency was 92.70% and was obtained
when the CW-MFC was constructed with support matrix S3 with particle size of 10 mm and
porosity of 30%. Small particle size increased the microbial biomass of the bottom layer
of CW-MFC, which would promote the decolorization of X-3B in the bottom layer. However,
it may cause the lack of nutrition in electrode layer and the increase in resistance of
mass transfer, which would lead to the decline of electricity production. The
decolorization efficiency and the power density of CW-MFC increased concomitantly with
the increase of cathode areas, and the CW-MFC got the highest decolorization efficiency
of 99.41% when the cathode area was 594 cm<sup>2</sup>. The electricity production
performance became stable when the cathode area continued to increase, while the
decolorization efficiency declined. This may be attributed to that more electrons were
transferred to the cathode to produce current instead of used in degradation of X-3B.
© 2017, Science Press. All right reserved.
Number of references:22
Main heading:Microbial fuel cells
Controlled terms:Azo dyes - Cathodes - Efficiency - Electric power generation -
Electrodes - Fuel cells - Mass transfer - Particle size - Power quality - Wetlands
Uncontrolled terms:Cathode area - Constructed wetlands - Decolorization - Electricity
production - Support matrix
Classification code:641.3 Mass Transfer - 702.2 Fuel Cells - 706.1.2 Electric Power
Distribution - 803 Chemical Agents and Basic Industrial Chemicals - 913.1 Production
Engineering
Numerical data indexing:Area 5.94e-02m2, Percentage 3.00e+01%, Percentage 9.27e+01%,
Percentage 9.94e+01%, Size 1.00e-02m
DOI:10.13227/j.hjkx.201608193
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 248>
Accession number:20173704160950
Title:Influence of Spatial Pattern of Paddy Field on the Losses of Nitrogen and
Phosphorus in Three Gorges Reservoir Area
Authors:Chen, Cheng-Long (1); Gao, Ming (1, 2, 3); Ni, Jiu-Pai (1, 2, 3); Xie, De-Ti (1,
2, 3); Deng, Hua (1)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Engineering Research Center for Agricultural
Non-point Source Pollution Control in the Three Gorges Reservoir Area, Chongqing; 400715,
China; (3) Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry
of Education, Chongqing; 400715, China
Corresponding author:Gao, Ming(gaoming@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1889-1897
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This paper used three plots of paddy field in Wangjiagou small catchment in
Fuling District, Chongqing Municipality as a case study. Wangjiagou, located in Three
Gorges Reservoir Area, provided a good case in terms of its closeness of surface runoff.
The samples of individual rainfall of twelve times and process of two typical individual
rainfalls on three plots of sloping paddy field were collected from 2014 to 2015. These
samples were used to analyze the influence of spatial pattern of sloping paddy field on
the concentration of nitrogen and phosphorus in the surface runoff. The samples of daily
runoff in subcatchments in 2010 and 2015 were used to analyze the influence of spatial
pattern change of subcatchments' paddy field on the concentration of nitrogen and
phosphorus in the surface runoff. The results indicated that the removal rates of TN,
NO<inf>3</inf><sup>-</sup>-N and TP of paddy field at the valley bottom were higher than
those in the mid-slopes. The removal rate of TP would be higher if plot size of paddy
field at the bottom got bigger. During individual rainfall event, the losses
concentration of TN, NO<inf>3</inf><sup>-</sup>-N and TP in the paddy fields was
significantly different among three different spatial patterns during the previous period
of heavy rain event, but it became different during the next period of moderate rain
event. The two subcatchments'spatial pattern change of paddy field had weakened the
intercepting purification ability of nitrogen and phosphorus losses of paddy field in
2015, compared with that in 2010. TN's losses concentration increased significantly
during the periods of light and moderate rain event and base flow. TP's losses
concentration fluctuated during the event from moderate rain to heavy rain. Hence,
increasing the area of paddy field of catchment and optimizing its spatial pattern
reasonably were found as effective measures to control agricultural non-point source
pollution in the Three Gorges Reservoir Region. © 2017, Science Press. All right
reserved.
Number of references:27
Main heading:Agricultural runoff
Controlled terms:Catchments - Nitrogen - Phosphorus - Pollution - Pollution control -
Precipitation (meteorology) - Rain - Runoff
Uncontrolled terms:Non-point source pollution - Paddy fields - Reduce - Small catchment -
Spatial patterns
Classification code:442.1 Flood Control - 443.3 Precipitation - 453.1 Water Pollution
Sources - 804 Chemical Products Generally
DOI:10.13227/j.hjkx.201606042
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 249>
Accession number:20173704160959
Title:Law of Pollutant Erosion and Deposition in Urban Sewage Network
Authors:Sang, Lang-Tao (1); Shi, Xuan (1); Zhang, Tong (1); Fu, Bo-Wen (1); Jin, Peng-
Kang (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Corresponding author:Jin, Peng-Kang(pkjin@hotmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1965-1971
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to investigate the scouring and deposition law of pollutants in urban
sewer systems, the investigation of sewer systems was carried out in Xi'an. The results
showed that the thickness of sediment in the branch pipe and the main pipe varied
obviously. At the peak of the drainage, the velocity increased gradually, and the
thickness of the pipeline sediment decreased. At the bottom of the drainage trough, the
changes of the velocity and the thickness of the pipeline sediment were opposite, with
variations of 0-24 mm and 0-12 mm, respectively. And the probability of granular
contaminants sedimentation and scouring in sewer systems was high, while the thickness of
sediment in sewage main pipe was less than the above mentioned pipes, the variation of
which was 0-7 mm. In addition, the sedimentation and scouring in the main pipeline kept
relatively balanced and the thickness of sediment remained stable. In order to clarify
the relationship between the concentration of pollutants and the flow velocity, a pilot
sewer system was established. The effects of different flow rates, which were 0.1, 0.3,
0.6, 0.9, 1.2 m·s<sup>-1</sup>, respectively, on the contents of carbon (organic),
nitrogen and phosphorus in the pipeline were studied. The results showed that with the
increase of the flow velocity, the scour intensity increased and the concentration of
pollutants in the pipeline also increased sharply. As shown by the monitoring results of
the static light scattering particle size analyzer, the carbon organic pollutants in the
pipeline were easily adsorbed on the larger particles, while nitrogen and phosphorus
pollutants were easily adsorbed on the particles with smaller size. Analysis on the
change of the urban sewage pipeline showed, when the flow rate was less than 0.6
m·s<sup>-1</sup>, the sedimentation of granular pollutants in the sewage was
greater than the scouring effect. When the flow velocity was higher than 0.6
m·s<sup>-1</sup>, the water scouring intensity increased and the scouring action
was greater than the sedimentation, meanwhile, the sediments were carried by the water
and the thickness of the sediments was reduced. The increase of the organic pollutants in
the sewage was bigger than the nitrogen and phosphorus pollutants, so that the existing
sewage carbon source was improved. © 2017, Science Press. All right reserved.
Number of references:17
Main heading:Organic pollutants
Controlled terms:Deposition - Flow velocity - Light scattering - Nitrogen - Organic
carbon - Particle size - Particle size analysis - Phosphorus - Pipelines - Pollution -
Sedimentation - Sediments - Sewage - Sewers - Velocity - Water pollution - Water quality
Uncontrolled terms:Erosion and deposition - Monitoring results - Nitrogen and phosphorus
- Pollutants - Sewage water - Static Light Scattering - Urban sewages - Urban sewer
system
Classification code:445.2 Water Analysis - 452.1 Sewage - 453 Water Pollution - 483
Soil Mechanics and Foundations - 619.1 Pipe, Piping and Pipelines - 631 Fluid Flow -
741.1 Light/Optics - 802.3 Chemical Operations - 804 Chemical Products Generally -
804.1 Organic Compounds - 951 Materials Science
Numerical data indexing:Size 0.00e+00m to 1.20e-02m, Size 0.00e+00m to 2.40e-02m, Size
0.00e+00m to 7.00e-03m, Velocity 1.20e+00m/s, Velocity 6.00e-01m/s
DOI:10.13227/j.hjkx.201610033
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 250>
Accession number:20173704160967
Title:Aerobic Degradation Characteristics of the Quinoline-Degrading strain Ochrobactrum
sp. and Its Bioaugmentation in Coking Wastewater
Authors:Xu, Wei-Chao (1); Wu, Cui-Ping (1); Zhang, Yu-Xiu (1); Zhang, Qi (1); Zhang, Yi-
Ming (1)
Author affiliation:(1) School of Chemical and Environmental Engineering, China University
of Mining and Technology (Beijing), Beijing; 100083, China
Corresponding author:Zhang, Yu-Xiu(zhangyuxiu@cumtb.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2030-2035
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Quinoline is one of the common refractory organic pollutants in coking
wastewater. An aerobic bacterial strain KDQ3 capable of utilizing quinoline as the sole
source of carbon, nitrogen and energy was isolated from activated sludge of a coking
wastewater treatment plant. The morphological properties and the 16S rDNA sequence
identified KDQ3 as Ochrobactrum sp.. The optimized temperature and initial pH for
quinoline degradation were 37℃ and 7.0-8.0, and the degradation kinetics fit with
Haldane's model. KDQ3 could degrade 200 mg·L<sup>-1</sup>quinoline in the presence
of 10.4 mg·L<sup>-1</sup>hexavalent chromium. In addition, KDQ3 was able to
degrade quinoline in real coking wastewater of aerobic tank and improve the removal of
COD, indicating that KDQ3 had the potential of bioaugmentation for removal of quinoline
from coking wastewater. © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Wastewater treatment
Controlled terms:Activated sludge process - Carbon - Degradation - Organic pollutants -
pH effects
Uncontrolled terms:Bio-augmentation - Coking wastewater - Degradation kinetics -
Ochrobactrum sp - Quinoline
Classification code:452.2 Sewage Treatment - 452.4 Industrial Wastes Treatment and
Disposal - 801.1 Chemistry, General - 802.2 Chemical Reactions - 804 Chemical Products
Generally - 804.1 Organic Compounds
Numerical data indexing:Mass_Density 1.04e-02kg/m3, Mass_Density 2.00e-01kg/m3
DOI:10.13227/j.hjkx.201610236
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 251>
Accession number:20173704160973
Title:Nitrous Oxide Emissions and Its Influencing Factors from an Agricultural Headwater
Ditch During a Maize Season in the Hilly Area of Central Sichuan Basin
Authors:Tian, Lin-Lin (1, 2, 3); Zhu, Bo (1, 2); Wang, Tao (1, 2); Zhao, Yuan (1, 2, 3);
Dong, Hong-Wei (1, 2); Ren, Guang-Qian (1, 2); Hu, Lei (1, 2, 3)
Author affiliation:(1) Institute of Mountain Hazards and Environment, Chinese Academy of
Sciences, Chengdu; 610041, China; (2) Key Laboratory of Mountain Surface Processes and
Ecological Regulation, Chinese Academy of Sciences, Chengdu; 610041, China; (3)
University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Zhu, Bo(bzhu@imde.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2074-2083
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Agricultural headwater ditches, the important locations for retaining and
transforming nitrogen derived from the adjacent farmlands, have been regarded as the
potential source of nitrous oxide (N<inf>2</inf>O) emission. In this study,
N<inf>2</inf>O emissions from a typical agricultural ditch in the Hilly Area of Central
Sichuan Basin, were observed by closed static chamber-GC technique during the maize
season (rainy season), from June to the end of September. During the study period,
cumulative N<inf>2</inf>O emissions in the sediment-water interface without vegetation
(NV) and the ditch ecosystem with natural vegetation (V) were 0.07 and 0.43
kg·hm<sup>-2</sup>, respectively. Meanwhile, the mean N<inf>2</inf>O flux from the
agricultural headwater ditch ecosystem [14.7 μg·(m<sup>2</sup>·h)<sup>-
1</sup>] was comparable to the magnitude of direct N<inf>2</inf>O flux from the maize
cropland in this region. Nitrate concentration in the overlying water could be the main
factor governing N<inf>2</inf>O emission from the ditch, especially in the rainy season.
The existence of vegetation increased the indirect N<inf>2</inf>O emission factor (V:
0.05% vs. NV: 0.01%). The indirect N<inf>2</inf>O emission factor from this field
investigation was much lower than the default value proposed by the Intergovernmental
Panel on Climate Change (IPCC, 2006) for assessing indirect agricultural N<inf>2</inf>O
emissions. More attention should be paid to in situ measurements to reduce uncertainty of
N<inf>2</inf>O estimation calculated by only applying the default value for emission
factor from the IPCC. © 2017, Science Press. All right reserved.
Number of references:57
Main heading:Agriculture
Controlled terms:Climate change - Ecology - Ecosystems - Nitrates - Nitrogen - Nitrogen
oxides - Rain - Uncertainty analysis - Vegetation
Uncontrolled terms:Central Sichuan Basin - Emission factors - In-situ measurement -
Intergovernmental panel on climate changes - Nitrate concentration - Nitrogen cycling -
Nitrous oxide emissions - Sediment water interface
Classification code:443.1 Atmospheric Properties - 443.3 Precipitation - 454.3 Ecology
and Ecosystems - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 821
Agricultural Equipment and Methods; Vegetation and Pest Control - 922.1 Probability
Theory
Numerical data indexing:Percentage 1.00e-02%
DOI:10.13227/j.hjkx.201611163
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 252>
Accession number:20173704160968
Title:Manganese Oxidation Characteristics and Oxidation Mechanism of a Manganese-
Oxidizing Bacterium Arthrobacter sp. HW-16
Authors:Wan, Wen-Jie (1); Xue, Zhi-Jun (1); Zhang, Ze-Wen (1); He, Dong-Lan (1)
Author affiliation:(1) College of Life Sciences, South-Central University for
Nationalities, Wuhan; 430070, China
Corresponding author:He, Dong-Lan(hdl@mail.scuec.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2036-2043
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Manganese is a common inorganic pollutant, which is difficult to remove from the
environment. In this research, a high efficient manganese-oxidizing bacterium
Arthrobacter sp. HW-16 was isolated from the manganese-rich soil using selective media.
Besides, high-throughput sequencing revealed that there were significant differences of
the microbial community compositions when bacteria were acclimated in different
conditions, and Arthrobacte was the dominant genus in Mn(II) containing media. In this
paper, the microbiological properties of strain HW-16 and Mn(II) oxidation mechanism were
investigated. The results indicated that the maximal Mn(II) tolerance mass concentration
of strain HW-16 was 5 000 mg·L<sup>-1</sup>, and it exhibited a decent Mn(II)
oxidation efficiency with the highest value of 66.28% at a Mn(II) concentration of 3 000
mg·L<sup>-1</sup>. Single factor experiments demonstrated that environmental
factors could affect the growth and Mn(II) oxidation efficiency of strain HW-16. At
30℃ or pH 7.0, at 1% or 3% salinity, and at 200 r·min<sup>-1</sup>, strain
HW-16 got the highest biomass. While the highest Mn(II) oxidation efficiency occurred at
high temperature (≥40℃), high pH (≥7), high shaking speed and low salinity.
Strain HW-16 could oxidize Mn(II) by producing Mn(II) oxidizing active factor and turn
Mn(II) into precipitation by synthesizing alkaline metabolites. © 2017, Science
Press. All right reserved.
Number of references:26
Main heading:Manganese
Controlled terms:Alkalinity - Bacteria - Efficiency - Oxidation
Uncontrolled terms:Environmental factors - High-throughput sequencing - Manganese
oxidations - Manganese oxidizing bacteria - Microbial community composition - Mn
oxidation - Oxidation mechanisms - Single-factor experiments
Classification code:543.2 Manganese and Alloys - 801.1 Chemistry, General - 802.2
Chemical Reactions - 913.1 Production Engineering
Numerical data indexing:Mass_Density 3.00e+00kg/m3, Mass_Density 5.00e+00kg/m3,
Percentage 1.00e+00%, Percentage 3.00e+00%, Percentage 6.63e+01%
DOI:10.13227/j.hjkx.201611103
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 253>
Accession number:20173704160957
Title:Performance of Polymer-based Titanium and Zirconium Oxides Composite Adsorbent for
Simultaneous Removal of Phosphorus and Fluorine from Water
Authors:Chen, Jia-Kai (1); Nie, Guang-Ze (2); Liu, Zhi-Ying (2); Yao, Yuan (2); Xu, Yan-
Hua (2)
Author affiliation:(1) College of Urban Construction, Nanjing Tech University, Nanjing;
211800, China; (2) College of Environmental Science and Engineering, Nanjing Tech
University, Nanjing; 211800, China
Corresponding author:Xu, Yan-Hua(23656070@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1947-1956
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A novel composite adsorbent (Ti-Zr-D201) for simultaneous removal of phosphate
and fluoride from water was prepared by loading nanosized titanium and zirconium oxides
on the anion exchange resin named D201. Combining with the characterization of the
adsorbent, adsorption isotherm experiments, effect of solution pH experiments,
competitive tests, kinetic experiments and fixed bed column adsorption experiments were
performed to explore the adsorption performance and mechanism. The maximum adsorption
capacity of Ti-Zr-D201 for phosphorus and fluorine was 34.9mg·g<sup>-1</sup>and
35.1mg·g<sup>-1</sup>respectively, when the pH value was 5.8 and the temperature
was 308K. Adsorption behavior was spontaneous, and higher temperature was favorable for
phosphorus and fluoride adsorption. The effect of pH on the adsorption of fluoride was
more significant compared with the adsorption of phosphorus. SO<inf>4</inf><sup>2-</sup>,
NO<inf>3</inf><sup>-</sup>and Cl<sup>-</sup>were selected as the competitive ions for
competition experiments, and the results indicated that Ti-Zr-D201 exhibited favorable
sorption selectivity for phosphorus and fluoride compared with the host material D201.
The fitting results of the internal diffusion model showed that there were two different
adsorption stages before the adsorption equilibrium of Ti-Zr-D201. Column adsorption
experiments showed that Ti-Zr-D201 had a stable structure, excellent dynamic adsorption
performance, and could be recycled, which showed the potential of practical application.
© 2017, Science Press. All right reserved.
Number of references:24
Main heading:Titanium oxides
Controlled terms:Adsorption - Adsorption isotherms - Fluorine - Fluorine compounds - Ion
exchange resins - Oxides - pH effects - Phosphorus - Titanium - Zirconia
Uncontrolled terms:Adsorption capacities - Adsorption equilibria - Adsorption performance
- Anion exchange resins - Composite adsorbents - Fluorine removal - Polymer based -
Titanium and zirconiums
Classification code:542.3 Titanium and Alloys - 801.1 Chemistry, General - 802.3
Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds -
815.1.1 Organic Polymers
Numerical data indexing:Temperature 3.08e+02K
DOI:10.13227/j.hjkx.201611032
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 254>
Accession number:20173704160975
Title:Characteristics of Biochar-mediated N<inf>2</inf>O Emissions from Soils of
Different Surface Conditions
Authors:Zou, Juan (1); Hu, Xue-Yu (1); Zhang, Yang-Yang (1); Zhang, Di (1); Chen, Wei
(1); Wang, Xiang-Qian (1); Chen, Yao-Jun (1); Liu, Yang (1)
Author affiliation:(1) School of Environmental Studies, China University of Geosciences,
Wuhan; 430074, China
Corresponding author:Hu, Xue-Yu(huxueyu@cug.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2093-2101
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:It was aimed to investigate the response to biochar addition on N<inf>2</inf>O
gas production and emission in different surface conditions. To study the dynamic changes
of soil N<inf>2</inf>O release, soil nitrate(NO<inf>3</inf><sup>-</sup>-N) and ammonium
(NH<inf>4</inf><sup>+</sup>-N), a field trials experiment was conducted from 2014 to 2015
in wheat and corn season, which contained three treatments [the blank control group (CK),
biochar applied at 5 t·(hm<sup>2</sup>·a)<sup>-1</sup>(BC5) and 45
t·(hm<sup>2</sup>·a)<sup>-1</sup>(BC45), respectively] under crop
cultivation(+) and non-cultivation(-) condition. The results indicated that: (1) During
the season of wheat growth, the soil N<inf>2</inf>O emissions of CK+, BC5+, BC45+ were
21.70-88.91, 21.42-130.09, 64.44-179.58 μg·(m<sup>2</sup>·h)<sup>-
1</sup>respectively, and that of BC45+ possessed a higher value than those of the other
treatments(P<0.05). Compared with wheat winter period, the soil N<inf>2</inf>O
emissions of the three treatments decreased evidently in wheat peak stage(returning green
and jointing stage, booting and heading stage) (P<0.05), and the amplification of
BC45+ reduced by 18.43% and 14.62% in comparison with CK+ and BC5+ in wheat booting and
heading stages. In the early stage of maize growth, the soil N<inf>2</inf>O emissions of
BC45+ were significantly increased compared with CK+ and BC5+(P<0.05). However, there
were no significant differences among treatments of maize heading stage and mature stage.
It showed that the biochar-mediated promotion effect of soil N<inf>2</inf>O emissions was
effectively inhibited by crop growth and the increase of surface mulch. Besides, the
result of soil N<inf>2</inf>O release in the same treatment had also confirmed this
conclusion in bare land. (2) Under the conditions of wheat cultivation and homochronous
non-cultivation, the soil NO<inf>3</inf><sup>-</sup>-N and NH<inf>4</inf><sup>+</sup>-N
contents of BC5+ and BC45+ treatments were raised with respect to CK+, but the values
dropped significantly in wheat peak stage, especially for BC45+ treatment, with 96.44%
and 69.40% decrease respectively. The soil inorganic nitrogen content of maize growth
season had a similar trend in wheat season. Parallel to this result of the apparently
falling soil NO<inf>3</inf><sup>-</sup>-N and NH<inf>4</inf><sup>+</sup>-N
concentrations, the soil N<inf>2</inf>O emissions of BC45+ also declined remarkably in
peak stage. The decline in respiratory substrate caused by the increase of nitrogen
uptake by crop growth, may be one of the reasons for the decrease of N<inf>2</inf>O
emission. (3) In wheat growth season, the soil pH values of the biochar treatments were
improved from 4.62 to 5.18. In maize season, the soil pH values ranged from 4.42 to 5.02.
When the soil pH value was relatively low, the soil N<inf>2</inf>O emission was high, and
vice versa. The soil N<inf>2</inf>O emission was partly influenced by the soil pH value.
© 2017, Science Press. All right reserved.
Number of references:29
Main heading:Soil pollution
Controlled terms:Crops - Nitrates - Nitrogen - Nitrogen oxides - pH - Soils
Uncontrolled terms:Ammonium nitrogen - Bio chars - Land cover - Nitrate nitrogen -
Nitrous oxide
Classification code:483.1 Soils and Soil Mechanics - 801.1 Chemistry, General - 804
Chemical Products Generally - 804.2 Inorganic Compounds - 821.4 Agricultural Products
Numerical data indexing:Percentage 1.46e+01%, Percentage 1.84e+01%, Percentage 6.94e+01%,
Percentage 9.64e+01%
DOI:10.13227/j.hjkx.201606152
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 255>
Accession number:20173704160964
Title:Effect of Substrate Ratio on Nitrogen Removal Performance of ANAMMOX in ABR
Authors:Lü, Gang (1); Xu, Le-Zhong (1, 2, 3); Shen, Yao-Liang (1, 2, 3); Wu, Peng
(1, 2, 3); Zhang, Ting (1); Thomas, Samwine (1)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Jiangsu Collaborative Innovation
Center of Technology and Material of Water Treatment, Suzhou; 215009, China; (3) Jiangsu
Key Laboratory of Environmental Science and Engineering, Suzhou; 215009, China
Corresponding author:Xu, Le-Zhong(kgre505@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:2006-2011
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to solve the problem of low nitrogen removal caused by incomplete
removal of anaerobic ammonium oxidation (ANAMMOX) substrate, The nitrogen removal
performance of the ANAMMOX was investigated by controlling different influent substrate
ratios in an anaerobic baffled reactor (ABR). The result showed the optimal influent
NO<inf>2</inf><sup>-</sup>-N/NH<inf>4</inf><sup>+</sup>-N was 1.34 with which the
NH<inf>4</inf><sup>+</sup>-N and NO<inf>2</inf><sup>-</sup>-N removal efficiencies were
about 99.99% and the total nitrogen removal efficiency reached a peak of 87%. When the
influent NO<inf>2</inf><sup>-</sup>-N/NH<inf>4</inf><sup>+</sup>-N gradually reduced from
1 to 0.49 and increased from 1.34 to 1.62, the absolute removal of NH<inf>4</inf><sup>
+</sup>-N and NO<inf>2</inf><sup>-</sup>-N was stable in the reactor and no significant
inhibition was observed in the system. Under the condition of different substrate ratios,
the removal of NH<inf>4</inf><sup>+</sup>-N and NO<inf>2</inf><sup>-</sup>-N was
basically consumed in the first compartment of ABR, the change of substrate ratio did not
have an obvious impact on the nitrogen removal performance of each compartment in the
ABR, thus, the ABR ANAMMOX system had good stability to the change of substrate
concentration. © 2017, Science Press. All right reserved.
Number of references:24
Main heading:Nitrogen removal
Controlled terms:Efficiency - Enzyme inhibition - Nitrogen - Nitrogen compounds -
Nitrogen oxides - Removal - Wastewater treatment
Uncontrolled terms:Anaerobic ammonium oxidation - Anaerobic baffled reactor - Different
substrates - Good stability - N removal - Removal performance - Substrate concentrations
- Total nitrogen removal
Classification code:452.4 Industrial Wastes Treatment and Disposal - 804 Chemical
Products Generally - 804.2 Inorganic Compounds - 913.1 Production Engineering
Numerical data indexing:Percentage 1.00e+02%, Percentage 8.70e+01%
DOI:10.13227/j.hjkx.201611223
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 256>
Accession number:20173704160961
Title:Characteristics of Denitrification Inhibiting Sulfate Reducing Process
Authors:Jin, Peng-Kang (1); Yang, Zhen-Rui (1); Li, Rong (1, 2); Li, Yan (3); Zhou, Li-
Hui (3)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China; (2) Baotou Financial
Investment and Assessment Center, Baotou; 014030, China; (3) Oil and Gas Technology
Research Institute, Changqing Oil Field Company, Xi'an; 710055, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1982-1990
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this study, a set of two-stage UASB reactor was used to study the
characteristics of denitrification inhibiting sulfate reduction in oil field gathering
and transportation system and some high salt wastewater, and the characteristics of
granular sludge and microbial characteristics were studied after the stable operation of
the process. The results showed that the addition of NaNO<inf>2</inf>increased the number
of denitrifying bacteria (DNB) from 7.0×10<sup>3</sup>CFU·(100 mL)<sup>-
1</sup>to 7.3×10<sup>5</sup>CFU·(100 mL)<sup>-1</sup>and remained stable in
the process from start to mature. The competitive inhibition caused by DNB decreased the
number of SRB from 8.0×10<sup>5</sup>CFU·(100 mL)<sup>-1</sup>to
7.6×10<sup>4</sup>CFU·(100 mL)<sup>-1</sup>. Meanwhile, the sulfate
reduction was inhibited, and the inhibition rate increased and finally stabilized to 82%.
The study on mass ratio of microbial mass to nitrite effecting on denitrification
efficiency showed that the inhibition rate of S<sup>2-</sup>was the highest, reaching
92%, when the mass ratio was 1200. The inhibition rate of the process could remain at
about 92%, with good stability. The particle size and sedimentation rate of granular
sludge were measured to determine whether the process conditions were favorable for the
formation of granular sludge. The study showed that the denitrifying granular sludge
formed was brown, basically ellipsoidal and spherical, with smooth surface and high
density. Before the denitrification inhibition, the particle size of granular sludge was
1.0- 1.4 mm and the average diameter was 1.17 mm, and after denitrification inhibition,
the particle size distribution was 1.2-1.6 mm, the average particle size was 1.21 mm,
which indicated that the denitrification inhibition increased the size of granular
sludge. The average sedimentation velocity of denitrifying granular sludge was 47.6
m·h<sup>-1</sup>, which revealed the good settling performance of the granular
sludge. The results of PCR-DGGE analysis showed that the denitrification inhibition
reduced the number of microbial species from 18 to 14 and the number of dominant species
decreased from 4 to 3, indicating the decreasing microbial diversity. The similarity of
microbial population before and after nitrification was 62.6% and the population
structure changed greatly from SRB to DNB. The number of dominant SRB species decreased
from 4 to 2 after denitrification inhibition and the abundance of every species decreased
obviously. The main functional bacterial species of the inhibition process was uncultured
Sulfurimonas sp., which is a kind of autotrophic denitrifying bacteria. It dominated and
competed with SRB for electrons, inhibiting the sulfate reduction and the production of
sulfide. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Denitrification
Controlled terms:Bacteria - Granular materials - Oil fields - Particle size - Particle
size analysis - Particles (particulate matter) - Petroleum transportation - Polymerase
chain reaction - Reduction - Sulfur compounds
Uncontrolled terms:Denitrification efficiencies - Denitrifying bacteria (DNB) - Granular
sludge - Microbial characteristics - PCR-DGGE - Sedimentation velocities - Sulfate
reducing bacteria - Two-stage UASB reactors
Classification code:512.1.1 Oil Fields - 801.2 Biochemistry - 802.2 Chemical Reactions
- 951 Materials Science
Numerical data indexing:Percentage 6.26e+01%, Percentage 8.20e+01%, Percentage 9.20e+01%,
Size 1.00e-03m to 1.40e-03m, Size 1.17e-03m, Size 1.20e-03m to 1.60e-03m, Size 1.21e-03m,
Volume 1.00e-04m3
DOI:10.13227/j.hjkx.201611097
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 257>
Accession number:20173704160962
Title:Enhanced Short-cut Denitrification by Fe<sup>(0)</sup>-activated Carbon and Its
Influencing Factors
Authors:Lü, Yong-Tao (1); Liu, Ting (1); Zeng, Yu-Lian (1); Sun, Ting (1); Zhang,
Yao (1); Wang, Lei (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:5
Issue date:May 15, 2017
Publication year:2017
Pages:1991-1996
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to reduce the carbon source for biological short-cut denitrification,
Fe<sup>(0)</sup>-activated carbon was used to enhance nitrogen removal in the absence of
organic carbon, and the influences of the Fe/C mass ratio and initial pH value on the
nitrogen removal efficiency were explored. The results showed that the nitrite removal
efficiency increased from 7.4% to 31.1% when the Fe<sup>(0)</sup>-activated carbon was
used to enhance short-cut denitrification. When the Fe/C mass ratio was reduced from 2: 1
to 1: 1 and 1: 2, both the denitrification rate and nitrite removal efficiency first
increased and then decreased. At a Fe/C mass ratio of 1: 1, a maximum denitrification
rate of 5.58 mg·(g·h)<sup>-1</sup>and a maximum nitrite removal efficiency
of 41.1% were achieved, respectively, and 0.1 mg of nitrous oxide was emitted. When the
pH value was increased from 6.0 to 9.0, the denitrification rate decreased from 7.39 to
5.96 mg·(g·h)<sup>-1</sup>, and the nitrous oxide emission decreased from
0.19 to 0.12 mg. Therefore, a higher nitrogen removal efficiency could be achieved by
Fe<sup>(0)</sup>-activated at a Fe/C mass ratio of 1: 1 and pH value of 6.0. However,
more nitrous oxide would be emitted at a low pH value. © 2017, Science Press. All
right reserved.
Number of references:28
Main heading:Denitrification
Controlled terms:Activated carbon - Efficiency - Nitrogen - Nitrogen oxides - Nitrogen
removal - Organic carbon - pH
Uncontrolled terms:Carbon source - Denitrification rate - Initial pH value - Mass ratio -
Nitrite removal - Nitrogen removal efficiency - Nitrous oxide emissions - Zero valence
iron
Classification code:801.1 Chemistry, General - 802.2 Chemical Reactions - 804 Chemical
Products Generally - 913.1 Production Engineering
Numerical data indexing:Mass 1.00e-07kg, Mass 1.90e-07kg to 1.20e-07kg, Percentage 4.11e
+01%, Percentage 7.40e+00% to 3.11e+01%
DOI:10.13227/j.hjkx.201611056
<RECORD 1>
Accession number:20173804179851
Title:Sorption of Phenanthrene to Soybean and Wheat Roots and the Bioavailability of
Sorbed Phenanthrene
Authors:Wang, Hong-Ju (1); Li, Qian-Qian (1); Shen, Yu (1); Gu, Ruo-Chen (1); Sheng, Yu
(1); Zhan, Xin-Hua (1)
Author affiliation:(1) College of Resources and Environmental Sciences, Nanjing
Agricultural University, Nanjing; 210095, China
Corresponding author:Zhan, Xin-Hua(xhzhan@njau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2561-2567
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The study of PAHs sorption and bioavailability to different crop roots could
help to reveal the environmental behavior of PAHs in the ecosystem and evaluate the
ecological risk of PAHs. However, there is little information about the differences in
PAHs sorption to different roots and the bioavailability of the sorbed PAHs. In this
paper, the experiments were conducted on the sorption/desorption of phenanthrene to
soybean and wheat roots under different sorption times and different phenanthrene
concentrations. The results showed that the trend of phenanthrene sorption in vivo was
first increased and then decreased and finally reached a balance, which was related to
the transport delay in vivo; the trend in dead and dried roots was first increased and
then reached a balance. The greater specific surface area and the higher fat content, the
faster the balance was. Freundlich isotherm was fitted better than Henry isotherm for
dead and dried roots, Langmuir isotherm was best fitted in wheat roots. All of the fitted
isotherms indicated that the distribution and the surface adsorption could control the
phenanthrene sorption. Because of the special binding between living roots and
phenanthrene, the fit effect was poor. The phenanthrene sorption capacity of soybean
roots was higher than that of wheat, which was related to the high water content, fat
content and membrane permeability. The phenanthrene sorbed on the roots was hard to
desorb, and the desorption trends were wheat roots>soybean roots; living
roots>dried roots>dead roots. The bioavailability of root-sorbed phenanthrene was
consistent with the desorption results. Our results could provide data for the assessment
of environmental risks of PAHs sorbed onto crop roots. © 2017, Science Press. All
right reserved.
Number of references:30
Main heading:Anthracene
Controlled terms:Adsorption isotherms - Aromatic hydrocarbons - Biochemistry - Crops -
Desorption - Ecology - Isotherms - Polycyclic aromatic hydrocarbons - Risk assessment -
Sorption
Uncontrolled terms:Adsorption/desorption - Bioavailability - Roots - Soybean - Wheat
Classification code:454.3 Ecology and Ecosystems - 801.2 Biochemistry - 802.3 Chemical
Operations - 804.1 Organic Compounds - 821.4 Agricultural Products - 914.1 Accidents
and Accident Prevention
DOI:10.13227/j.hjkx.201612020
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 2>
Accession number:20173804179815
Title:Atmospheric Ammonia/Ammonium-nitrogen Concentrations and Wet and Dry Deposition
Rates in a Double Rice Region in Subtropical China
Authors:Wang, Jie-Fei (1, 2, 3); Zhu, Xiao (1, 2, 3); Shen, Jian-Lin (1, 2); Zeng, Guan-
Jun (1, 2); Wang, Juan (1, 2); Wu, Jin-Shui (1, 2); Li, Yong (1, 2)
Author affiliation:(1) Key Laboratory of Agro-ecological Processes in Subtropical
Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha;
410125, China; (2) Changsha Research Station for Agricultural & Environmental
Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha;
410125, China; (3) College of Resources and Environment, University of Chinese Academy of
Sciences, Beijing; 100049, China
Corresponding author:Shen, Jian-Lin(jlshen@isa.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2264-2272
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Ammonia (NH<inf>3</inf>) is the most abundant alkaline gas in the ambient air,
and it is also one of the important precursors for the ammonium salts in aerosol and
rainwater. Though the emission intensities of NH<inf>3</inf>and acidic gases are high,
the concentrations and deposition rates of atmospheric ammonia-nitrogen (NH<inf>3</inf>-
N), particulate ammonium-nitrogen (NH<inf>4</inf><sup>+</sup>-N<inf>p</inf>) and
rainwater ammonium-nitrogen (NH<inf>4</inf><sup>+</sup>-N<inf>r</inf>) in double rice
regions in subtropical China are still less known. In this study, atmospheric
concentrations of NH<inf>3</inf>-N, NH<inf>4</inf><sup>+</sup>-N<inf>p</inf>in
PM<inf>10</inf>and NH<inf>4</inf><sup>+</sup>-N<inf>r</inf>and related meteorological
parameters were observed simultaneously in a typical double rice region in the
subtropical hilly region of China, with the aim to clarify the characteristics and
influencing factors of atmospheric NH<inf>3</inf>/NH<inf>4</inf><sup>+</sup>-N
concentrations and to quantify the wet and dry deposition rates of atmospheric
NH<inf>3</inf>/NH<inf>4</inf><sup>+</sup>-N. The results showed that the annual mean
concentrations of nitrogen in NH<inf>3</inf>-N, NH<inf>4</inf><sup>+</sup>-
N<inf>p</inf>and NH<inf>4</inf><sup>+</sup>-N<inf>r</inf>were 5.7 μg·m<sup>-
3</sup>, 12.8 μg·m<sup>-3</sup>and 0.8 mg·L<sup>-1</sup>, respectively,
and their deposition rates were 8.38, 5.61 and 9.07 kg·(hm<sup>2</sup>·a)
<sup>-1</sup>, respectively. The NH<inf>3</inf>-N concentration was significantly
increased after application of nitrogen fertilizer in the paddy field, and had a
significant positive correlation with the air temperature. The NH<inf>4</inf><sup>
+</sup>-N<inf>p</inf>concentration did not show significant correlation with
NH<inf>3</inf>-N concentration, indicating that atmospheric NH<inf>3</inf>-N
concentration was not the main limiting factor for the NH<inf>4</inf><sup>+</sup>-
N<inf>p</inf>pollution in the studied region. The NH<inf>4</inf><sup>+</sup>-
N<inf>r</inf>concentration was positively correlated with the NH<inf>4</inf><sup>
+</sup>-N<inf>p</inf>concentration but negatively correlated with precipitation. The high
concentrations and deposition rates of atmospheric NH<inf>3</inf>-N/NH<inf>4</inf><sup>
+</sup>-N in the studied region indicated that the atmospheric
NH<inf>3</inf>/NH<inf>4</inf><sup>+</sup>-N pollution was serious, and atmospheric
deposition of NH<inf>3</inf>/NH<inf>4</inf><sup>+</sup>-N was an important nitrogen
source in paddy fields, which should be considered in cropland nitrogen nutrient
management. © 2017, Science Press. All right reserved.
Number of references:43
Main heading:Nitrogen
Controlled terms:Aerosols - Air pollution - Ammonia - Atmospheric chemistry - Deposition
- Deposition rates - Meteorological problems - Nitrogen fertilizers - Pollution - Salts
- Tropics
Uncontrolled terms:Atmospheric ammonia - Atmospheric concentration - Atmospheric
depositions - Emission intensity - Meteorological parameters - Positive correlations -
Reactive nitrogen - Rice
Classification code:443 Meteorology - 443.1 Atmospheric Properties - 451 Air Pollution
- 802.3 Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic
Compounds
Numerical data indexing:Mass_Density 8.00e-04kg/m3
DOI:10.13227/j.hjkx.201610177
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 3>
Accession number:20173804179816
Title:Species of Iron in Size-resolved Particle Emitted from Xuanwei Coal Combustion and
Their Oxidative Potential
Authors:Wang, Qiang-Xiang (1); Tan, Zheng-Ying (1); Zhao, Hui (1); Li, Ji-Hua (2); Tian,
Lin-Wei (3); Wang, Qing-Yue (4); Yonemochi, Shinich (5); Lü, Sen-Lin (1)
Author affiliation:(1) School of Environmental and Chemical Engineering, Shanghai
University, Shanghai; 200444, China; (2) Yunnan Qujing Municipal Center For Disease
Control and Prevention, Qujing; 555000, China; (3) School of Public Health, The
University of Hong Kong, Hong Kong, Hong Kong; (4) Graduate School of Science and
Engineering, Saitama University, Japan; (5) Center for Environmental Science in Saitama,
Japan
Corresponding author:Lü, Sen-Lin(senlinlv@staff.shu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2273-2279
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Many reports have claimed that high lung cancer mortality rate in Xuanwei is
associated with the residential coal combustion. Considering iron is the main chemical
element in the particles emitted from Xuanwei coal combustion, and especially, reactive
oxygen species (ROS) could be generated by redox-active transition metals (TM) such as
iron (Fe) in particles, therefore, raw coal samples from 4 coal mines in Xuanwei were
sampled, and size-resolved particles emitted from the raw coal samples were collected by
using of Andersen Five-stage High Volume Sampler. Species of iron in the raw coal sample,
size-resolved particles and bottom ashes were analyzed by BCR sequential extraction
method (community bureau of reference, BCR). The generation potential of ·OH free
radicals from coal emission particles in the surrogate lung fluid (SLF) solution was
measured by using high pressure liquid chromatography (HPLC). Our results demonstrated
that a large fraction of oxidizable Fe could be found in raw coal samples. However, the
acid extractable, reducible and oxidizable fractions of Fe in the fly ash particles
accounted for a large proportion (46%-78%) in the size-resolved particles after coal
combustion. There was difference in levels of ·OH free radicals generated from
coal emission particles in the SLF for 24 hours among particles with different sizes. The
concentration of ·OH increased in both fine particles (<1 μm, 1.1-2 μm,
2-3.3 μm) and coarse particles (3.3-7 μm, >7 μm) as the particles size
decreased. Linear correlation could be found between the oxidizable fractions of iron and
the generation of ·OH in particles emitted from coal combustion
(R<sup>2</sup>=0.32). © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Coal combustion
Controlled terms:Ash handling - Biological organs - Chemical elements - Chromatography -
Coal - Coal mines - Diseases - Extraction - Fly ash - Free radicals - High pressure
liquid chromatography - Iron - Iron mines - Liquid chromatography - Positive ions - Redox
reactions - Transition metals
Uncontrolled terms:BCR sequential extraction - Community bureau of references - Lung
Cancer - Lung cancer mortality - Oxidative potential - Reactive oxygen species -
Residential coal combustions - Size-resolved particles
Classification code:461.2 Biological Materials and Tissue Engineering - 503.1 Coal
Mines - 524 Solid Fuels - 531 Metallurgy and Metallography - 545.1 Iron - 691.1
Materials Handling Equipment - 802.2 Chemical Reactions - 802.3 Chemical Operations -
804 Chemical Products Generally
Numerical data indexing:Percentage 4.60e+01% to 7.80e+01%, Size 1.10e-06m to 2.00e-06m,
Size 2.00e-06m to 3.30e-06m, Size 3.30e-06m to 7.00e-06m, Time 8.64e+04s
DOI:10.13227/j.hjkx.201611110
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 4>
Accession number:20173804179836
Title:Enrichment and Nitrogen Removal Characteristics of Marine Anaerobic Ammonium
Oxidizing Bacteria
Authors:Feng, Li (1); Yu, De-Shuang (1); Li, Jin (1); Shan, Xiao-Jing (1); Yang, Zhen-Lin
(1)
Author affiliation:(1) School of Environmental Science and Engineering, Qingdao
University, Qingdao; 266071, China
Corresponding author:Li, Jin(ljin0532@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2435-2443
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this work, enrichment and nitrogen removal characteristics of marine
anaerobic ammonium oxidizing bacteria were investigated by seeding sediment sludge from
the Jiaozhou bay. Experimental results showed that the whole process could be divided
into four phases: bacterial lysis phase (1-15 d), lag phase (16-152 d), exponential
growth phase (153-183 d) and stationary phase (184-192 d). Compared to freshwater
anaerobic ammonium oxidizing bacteria, the lag phase (137 d) was longer. However, the
exponential growth phase (30 d) was shorter. Besides, marine anaerobic ammonium oxidizing
bacteria were more sensitive to variation in substrate concentration and HRT. The
activity delay time caused by inflow and effluent was 5 h, which was far longer than
fresh anaerobic ammonium oxidizing bacteria. As a result, the adaptive ability of marine
anaerobic ammonium oxidizing bacteria was weaker and it was harder to enrich. After
successful enrichment of 192 d, the removal rates of ammonia nitrogen and nitrite
nitrogen were 96.98% and 95.66%, respectively. n(NH<inf>4</inf><sup>+</sup>-N)∶n
(NO<inf>2</inf><sup>-</sup>-N)∶n(NO<inf>3</inf><sup>-</sup>-N) was 1∶
(1.2±0.2)∶(0.22±0.06), which was close to the theoretical ratio.
NRR<inf>NH+4-N</inf>was 0.080 kg·(m<sup>3</sup>·d)<sup>-1</sup>, which
indicated that the activity of marine anaerobic ammonium oxidizing bacteria increased
significantly. The enrichment of marine anaerobic ammonium oxidizing bacteria was
achieved. The sludge characteristics changed from black to red. SEM observation confirmed
that the red granule was cenobium, which consisted of closely spaced micrococcus with
smooth surface and crateriform shape. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Nitrogen removal
Controlled terms:Bacteria - Blast enrichment - Effluents - Nitrogen - Nitrogen compounds
Uncontrolled terms:Ammonium oxidizing bacteria - Exponential growth phase - Nitrogen
removal efficiency - Removal characteristics - Saline wastewater - Sludge characteristics
- Stationary phase - Substrate concentrations
Classification code:452.3 Industrial Wastes - 804 Chemical Products Generally
Numerical data indexing:Percentage 9.57e+01%, Percentage 9.70e+01%, Time 1.80e+04s
DOI:10.13227/j.hjkx.201611169
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 5>
Accession number:20173804179827
Title:Formation of Brominated Disinfection By-products in Low Temperature Multi-effect
Distillation (LT-MED) Process for Seawater Desalination
Authors:Qi, Fei (1); Sun, Ying-Xue (1); Yang, Zhe (1, 3); Hu, Chun-Fang (1); Chang, Xue-
Ming (1); Hu, Hong-Ying (2)
Author affiliation:(1) Department of Environmental Science and Engineering, Beijing
Technology and Business University, Beijing; 100048, China; (2) State Key Joint
Laboratory of Environmental Simulation and Pollution Control, School of Environment,
Tsinghua University, Beijing; 100084, China; (3) Beijing Waterworks Group Limited
Company, Beijing; 100031, China
Corresponding author:Sun, Ying-Xue(sunyx@th.btbu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2364-2372
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Changes in water quality and brominated disinfection by-products (Br-DBPs)
during a low temperature multi-effect distillation (LT-MED) process for seawater
desalination were investigated. The concentrations of bromide ion and specific
ultraviolet absorbance (SUVA) in the seawater (i.e. the influent of LT-MED) were 54.6
mg·L<sup>-1</sup>and 1.7 L·(mg·m)<sup>-1</sup>, respectively. The
tryptophan-like aromatic protein, fulvic acid-like and soluble microbial by-product-like
organics dominated the fluorescent dissolved organic matter (DOM) in the seawater. After
the NaClO pre-chlorination in the LT-MED process, the concentrations of DBPs in the
seawater were significantly increased, especially Br-DBPs, and Bromoform
(CHBr<inf>3</inf>) accounted for 100% of total trihalomethanes (THMs), Bromoacetic acid
(C<inf>2</inf>H<inf>3</inf>BrO<inf>2</inf>) and dibromoacetic acid
(C<inf>2</inf>H<inf>2</inf>Br<inf>2</inf>O<inf>2</inf>) accounted for 31.9% and 68.1%,
respectively of total haloacetic acids (HAAs), while 4-Bromophenol
(C<inf>6</inf>H<inf>5</inf>BrO) accounted for 100% of total halogenated phenols (HPs).
The formation of THMs, HAAs and HPs was not detected in the finishing water produced by
the LT-MED desalination process, but these substances were retained in the concentrated
brine, of which THMs, HAAs and HPs were 56.9, 35.0 and 0.1 μg·L<sup>-1</sup>.
© 2017, Science Press. All right reserved.
Number of references:45
Main heading:Seawater effects
Controlled terms:Amino acids - Biogeochemistry - Biological materials - Byproducts -
Chlorination - Desalination - Disinfection - Distillation - Organic compounds - Produced
Water - Seawater - Temperature - Water analysis - Water quality
Uncontrolled terms:Concentrated brines - Dibromoacetic acid - Disinfection by-product -
Dissolved organic matters - Halogenated phenols - Low-temperature multi-effect
distillations - Seawater desalination - Specific ultraviolet absorbance
Classification code:445.1 Water Treatment Techniques - 445.2 Water Analysis - 461.2
Biological Materials and Tissue Engineering - 471.4 Seawater, Tides and Waves - 481.2
Geochemistry - 641.1 Thermodynamics - 802.2 Chemical Reactions - 802.3 Chemical
Operations - 804 Chemical Products Generally - 804.1 Organic Compounds
Numerical data indexing:Mass_Density 1.00e-07kg/m3, Mass_Density 3.50e-05kg/m3,
Mass_Density 5.46e-02kg/m3, Percentage 1.00e+02%, Percentage 3.19e+01%, Percentage 6.81e
+01%
DOI:10.13227/j.hjkx.201612043
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 6>
Accession number:20173804179817
Title:Dioxin Pollution and Occupational Inhalation Exposure of PCDD/Fs in Municipal Solid
Waste Incinerator
Authors:Du, Guo-Yong (1); Wang, Qian (1); Zhang, Shu-Lin (2); Zhang, Su-Kun (3); Deng,
Chun-Ping (1); Zhang, Hong-Ming (1); Zhu, Meng-Xiang (1); Jiang, Xin (1); Zhu, Cheng-Wang
(1); Ren, Yan-Ling (1)
Author affiliation:(1) School of Chemistry and Chemical Engineering, Southwest Petroleum
University, Chengdu; 610500, China; (2) PetroChina Sichuan Petrochemical Company Limited,
Chengdu; 611930, China; (3) South China Institute of Environmental Sciences, Ministry of
Environmental Protection, Guangzhou; 510655, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2280-2286
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To assess the pollution levels, characteristics, and the pollution sources and
occupational inhalation exposure of polychlorinated dibenzo-p-dioxins and dibenzofurans
(PCDD/Fs)in the workshops, ambient air samples in different types of incinerators of two
municipal solid waste incinerators(MSWI) were collected and analyzed. The results showed
that ① The I-TEQ concentration ranged from 0.034-2.152 pg·m<sup>-3</sup>in
the two waste incineration plants, and the most sites' I-TEQ exceeded the ambient air
quality standard. Besides, the I-TEQ concentration behind the incineration plant was
higher than others. ② The dioxins in incineration plant were dominated by OCDD and
1, 2, 3, 4, 6, 7, 8-HpCDD. For MSWI A, the flue gas and the fly ash had major effect on
PCDD/Fs, while the dioxins pollution in MSWI B was only affected by the fly ash. ③
Occupational inhalation exposure of PCDD/Fs was 0.01-1.10 pg·(kg·d)<sup>-
1</sup>in incineration plant, some occupational inhalation exposure values exceeded the
evaluation standard, and the areas behind the incinerators were evaluated to have a high
exposure risk. © 2017, Science Press. All right reserved.
Number of references:31
Main heading:Waste incineration
Controlled terms:Air pollution - Air quality - Air quality standards - Fly ash -
Incineration - Municipal solid waste - Organic pollutants - Pollution - Refuse
incinerators - Solid wastes - Technical presentations
Uncontrolled terms:Ambient air quality standards - Evaluation standard - Inhalation
exposure - MSWI - Municipal solid waste incinerator - PCDD/Fs - Polychlorinated dibenzo-
p-dioxins and dibenzofurans - Waste incineration plants
Classification code:451 Air Pollution - 451.2 Air Pollution Control - 452 Municipal
and Industrial Wastes; Waste Treatment and Disposal - 452.4 Industrial Wastes Treatment
and Disposal - 804.1 Organic Compounds - 902.2 Codes and Standards
DOI:10.13227/j.hjkx.201611030
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 7>
Accession number:20173804179852
Title:Effects of Dissolved Organic Matter Fractions Extracted from Humus Soil on Sorption
of Benzotriazole in Brown Soil and Black Soil
Authors:Yang, Ning-Wei (1); Bi, Er-Ping (1)
Author affiliation:(1) Beijing Key Laboratory of Water Environmental Engineering, School
of Water Resources and Environment, China University of Geosciences (Beijing), Beijing;
100083, China
Corresponding author:Bi, Er-Ping(bi@cugb.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2568-2576
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Dissolved organic matter (DOM) affects the sorption behavior of organic
pollutants in soils. In this study, bulk DOM (marked as DOM<inf>bulk</inf>) was extracted
from natural humus soil and divided into five individual fractions by XAD-8 resin and
anion/cation exchange resins based on their hydrophobicity-hydrophilicity. The isolated
DOM fractions were characterized by FTIR, elemental analysis, UV spectrophotometer and
potentiometric titration. Batch experiments were conducted to investigate the effects of
different fractions of DOM on sorption of benzotriazole (BTA) in two Chinese reference
soils (brown soil and black soil). Proportions of hydrophobic acid (HOA), hydrophobic
neutral (HON), hydrophilic acid (HIA), hydrophilic base (HIB) and hydrophilic neutral
(HIN) in DOM<inf>bulk</inf>were 61%, 17%, 6%, 2% and 14%, respectively. Sorption affinity
of BTA and DOM in black soil was greater than that in brown soil, which was attributed to
the higher organic carbon (OC) content of black soil as compared to that of brown soil.
Brown soil had higher normalized distribution coefficient K<inf>oc</inf>of sorbed DOM
fractions than black soil, because brown soil has a greater proportion of clay and silt,
which play important roles in sorption of DOM fractions. Dialysis-bag experiments
demonstrated that binding coefficient between each isolated DOM fraction and BTA in
solution was very weak. The reason is that the binding sites of DOM are occupied by water
molecules in solution. Among the isolated DOM fractions, HIN showed the strongest
sorption affinity in both soils, which increased OC content and consequently produced new
sorption sites in soils. The enhanced sorption effect from new sorption sites was greater
than that from competitive sorption between BTA and HIN. On a whole, HIN enhanced the
sorption of BTA in soil. HOA and HON inhibited the sorption of BTA in soils. Because the
sorption of hydrophobic fractions, especially HON, in soils was less than that of other
fractions, competitive sorption between hydrophobic fractions and BTA was the main
mechanism. DOM<inf>bulk</inf>that consists of 78% hydrophobic fractions had similar
effects with hydrophobic fractions on sorption of BTA in two soils. © 2017, Science
Press. All right reserved.
Number of references:38
Main heading:Soil pollution
Controlled terms:Binding sites - Bins - Biogeochemistry - Biological materials - Carbon -
Dissolution - Fractionation - Hydrophilicity - Hydrophobicity - Molecules - Organic
carbon - Organic compounds - Organic pollutants - Soils - Sorption - Titration -
Voltammetry
Uncontrolled terms:Benzotriazole(BTA) - Black soil - Brown soil - Dissolved organic
matters - Distribution coefficient - Hydrophilic neutrals - Hydrophobic fractions -
Potentiometric titrations
Classification code:461.2 Biological Materials and Tissue Engineering - 483.1 Soils and
Soil Mechanics - 694.4 Storage - 801 Chemistry - 802.3 Chemical Operations - 804
Chemical Products Generally - 804.1 Organic Compounds - 931.2 Physical Properties of
Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics
Numerical data indexing:Percentage 1.40e+01%, Percentage 1.70e+01%, Percentage 2.00e+00%,
Percentage 6.00e+00%, Percentage 6.10e+01%, Percentage 7.80e+01%
DOI:10.13227/j.hjkx.201612062
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 8>
Accession number:20173804179828
Title:Applicability Comparison and Application Study of Two Methods for Determination of
the Copper Complexing Capacity of Waters
Authors:Wang, Chen-Ye (1); Jiang, Kuo (1); Xie, Wen-Long (1); Wang, Lei (1, 2)
Author affiliation:(1) Key Laboratory of Pollution Processes and Environmental Criteria,
College of Environmental Science and Engineering, Nankai University, Tianjin; 300350,
China; (2) Tianjin Key Laboratory of Environmental Remediation and Pollution Control,
Tianjin; 300071, China
Corresponding author:Wang, Lei(wang2007@nankai.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2373-2378
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Complexing capacity (CC) is an important indicator affecting the environmental
behavior of heavy metals in water, which can be determined by different methods based on
different mechanisms. To validate and compare the applicability of different methods in
CC determination, the complexing capacity of Cu<sup>2+</sup>(CuCC) in solutions of
ethylenediamine tetraacetic acid (EDTA) and acesulfame was determined by methods of
dithizone extraction kinetics (DEK) and ion-selective electrodes (ISE), while EDTA and
acesulfame were selected to represent strong and weak ligands in water, respectively. DEK
method was found to be more suitable for determining the contribution of strong ligands
to CuCC, while the results determined by ISE were related to both the strong and weak
ligands in water. DEK and ISE methods were used to measure CuCC of several actual water
samples, including samples from reservoir, discharge river, fishpond, and landfill
leachates. CuCC in the water samples of the reservoir and discharge river measured by ISE
were 86.9-227.0 μmol·L<sup>-1</sup>, which were about one order of magnitude
higher than those measured by DEK (9.9-14.6 μmol·L<sup>-1</sup>). For the
landfill leachates, CuCC measured by ISE were 6 998.4-31 005.8 μmol·L<sup>-
1</sup>, which were 2 orders of magnitude higher than those by DEK (89.6-109.1
μmol·L<sup>-1</sup>). The increase of CuCC in the polluted water samples might
be due to the weak ligands like pollutants. A positive correlation (R=0.975, P<0.01)
was found between the CuCC related to the weak ligands (ΔCuCC) and the sum
concentration of ammonia nitrogen and organic nitrogen in waters. © 2017, Science
Press. All right reserved.
Number of references:26
Main heading:Ion selective electrodes
Controlled terms:Copper - Electric discharges - Electrodes - Extraction - Heavy metals -
Land fill - Leachate treatment - Ligands - Nitrogen - Reservoirs (water) - Water
pollution - Water resources
Uncontrolled terms:Complexing capacity - Copper complexing capacities - Different
mechanisms - Environmental behavior - Extraction kinetics - Natural waters - Positive
correlations - The ion-selective electrodes method
Classification code:441.2 Reservoirs - 444 Water Resources - 452 Municipal and
Industrial Wastes; Waste Treatment and Disposal - 453 Water Pollution - 531 Metallurgy
and Metallography - 544.1 Copper - 701.1 Electricity: Basic Concepts and Phenomena -
801.4 Physical Chemistry - 802.1 Chemical Plants and Equipment - 802.3 Chemical
Operations - 804 Chemical Products Generally
Numerical data indexing:Molar_Concentration 5.80e-03mol/m3, Molar_Concentration 8.69e-
02mol/m3 to 2.27e-01mol/m3, Molar_Concentration 8.96e-02mol/m3 to 1.09e-01mol/m3,
Molar_Concentration 9.90e-03mol/m3 to 1.46e-02mol/m3
DOI:10.13227/j.hjkx.201611118
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 9>
Accession number:20173804179826
Title:Pollution Characteristics and Risk Assessment of Heavy Metals in Water and Sediment
from Daye Lake
Authors:Zhang, Jia-Quan (1, 2); Tian, Qian (1); Xu, Da-Mao (1, 2, 3); Zhan, Chang-Lin (1,
2); Liu, Ting (1, 2); Yao, Rui-Zhen (1, 2); Liu, Xian-Li (1, 2); Xiao, Wen-Sheng (1, 2)
Author affiliation:(1) School of Environmental Science and Engineering, Hubei Polytechnic
University, Huangshi; 435003, China; (2) Hubei Key Laboratory of Mine Environmental
Pollution Control and Remediation, Huangshi; 435003, China; (3) Guangzhou Institute of
Geochemistry, Chinese Academy of Sciences, Guangzhou; 510640, China
Corresponding author:Zhan, Chang-Lin(chl_zhan@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2355-2363
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The surface water and surface sediments were collected from Daye Lake in April
2014. The concentrations of heavy metals were determined by atomic absorption
spectroscopy. The pollution potential health risk and ecological risk of heavy metals in
water and sediment were assessed by the health risk assessment model and the potential
ecological risk index method. The results showed that the concentrations of the heavy
metals (Ni, Cd, Cu and Pb) was 49.27 μg·L<sup>-1</sup>, 2.19
μg·L<sup>-1</sup>, 12.18 μg·L<sup>-1</sup>, 12.13
μg·L<sup>-1</sup>(water) and 78.46 mg·kg<sup>-1</sup>, 77.13
mg·kg<sup>-1</sup>, 650.13 mg·kg<sup>-1</sup>and 134.22 mg·kg<sup>-
1</sup>(sediment). Enrichment coefficient indicated that the enrichment of Cd, Cu and Pb
was more serious, especially the accumulation of Cd was the most obvious. Compared to
typical lakes in China, the contents of heavy metals in water and sediment were
relatively high. The spatial pollutant distribution of the heavy metals in water and
sediment all presented that the concentrations of the heavy metals were relatively higher
in east and west of Daye Lake, relatively more uniform in the middle, and their origins
were mainly from human activities. The results of environmental risk indicated that the
carcinogens and chemical non-carcinogens health risk values of heavy metals by drinking
water pathway were 9.77E-08~1.63E-05a<sup>-1</sup>. Therefore, the pollution of Ni and Cd
should be the primary control target for environmental health risk management. The
descending order of pollution degree of four metals in sediment was Cd>Cu>Pb>Ni,
and Cd was the main contributor of the potential ecological risk elements. © 2017,
Science Press. All right reserved.
Number of references:42
Main heading:Lake pollution
Controlled terms:Absorption spectroscopy - Cadmium - Carcinogens - Copper - Ecology -
Health - Health risks - Heavy metals - Lakes - Lead - Nickel - Pollution - Pollution
control - Potable water - Risk assessment - Risk management - River pollution - Sediments
- Surface waters - Water - Water pollution
Uncontrolled terms:Atomic absorption spectroscopy - Enrichment coefficients -
Environmental health risks - Environmental risks - Pollutant distribution - Potential
ecological risk - Potential health risks - Surface sediments
Classification code:444 Water Resources - 444.1 Surface Water - 453 Water Pollution -
454.3 Ecology and Ecosystems - 461 Bioengineering and Biology - 483 Soil Mechanics and
Foundations - 531 Metallurgy and Metallography - 544.1 Copper - 546.1 Lead and Alloys
- 548.1 Nickel - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth
Metals - 914.1 Accidents and Accident Prevention
Numerical data indexing:Mass_Density 1.22e-05kg/m3, Mass_Density 2.19e-06kg/m3,
Mass_Density 4.93e-05kg/m3
DOI:10.13227/j.hjkx.201610160
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 10>
Accession number:20173804179818
Title:Characteristics of Mercury Emissions from Modern Dry Processing Cement Plants in
Chongqing
Authors:Zhang, Cheng (1, 2); Zhang, Ya-Hui (1); Wang, Yong-Min (1); Wang, Ding-Yong (1,
2); Luo, Cheng-Zhong (3); Xu, Feng (3); He, Xiu-Qing (3)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400715, China; (3) Chongqing Solid Wastes Management Center,
Chongqing; 401117, China
Corresponding author:Wang, Ding-Yong(dywang@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2287-2293
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Three typical modern dry processing cement plants in Chongqing were chosen to
investigate mercury emission characteristics and its source and fate through a mercury
mass balance method by analyzing mercury contents in all input and output materials. The
results showed that limestone was the main source of mercury in three cement plants
followed by coal, and their mercury concentrations were (0.025±0.001)-
(0.032±0.002) mg·kg<sup>-1</sup>and (0.080±0.002)-
(0.110±0.012) mg·kg<sup>-1</sup>, respectively. The highest mercury level
in all required input materials was (0.447±0.007)-(0.525±0.009)
mg·kg<sup>-1</sup>for gypsum, while the mercury content of other raw materials
were very low. Most of the mercury released from these cement plants entered into flue
gas, and the mercury of gypsum entered into cement. The mercury emission fluxes were
calculated to be (73.42±8.10)-(215.18±10.75) g·d<sup>-1</sup>in
these three selected plants. The mercury emission factors for clinke and cement
(EF<inf>clinker</inf>and EF<inf>cement</inf>) were (0.016±0.001)-
(0.049±0.001) g·t<sup>-1</sup>and (0.011±0.000)-(0.036±0.001)
g·t<sup>-1</sup>, respectively, which were significantly lower than that employed
in cement industry according to the foreign mercury emission factors in the past. ©
2017, Science Press. All right reserved.
Number of references:32
Main heading:Mercury (metal)
Controlled terms:Cement industry - Cement plants - Cements - Gas plants - Gypsum - Gypsum
plants - Rotary kilns
Uncontrolled terms:Chongqing - Emission factors - Input and outputs - Mercury
concentrations - Mercury content - Mercury emission flux - Mercury emissions - Mercury
mass balance
Classification code:412.1 Cement - 482.2 Minerals - 522 Gas Fuels - 549.3 Nonferrous
Metals and Alloys excluding Alkali and Alkaline Earth Metals - 642.2 Industrial Furnaces
and Components
DOI:10.13227/j.hjkx.201611041
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 11>
Accession number:20173804179808
Title:Change of Atmospheric Pollution Diffusion Conditions in Beijing in Recent 35 Years
Authors:Guo, Chun-Wei (1, 2); Sun, Zhao-Bin (1, 2); Li, Zi-Ming (2); Zhang, Xiao-Ling
(2); Yang, Hui-Ling (3)
Author affiliation:(1) Institute of Urban Meteorology, China Meteorological
Administration, Beijing; 100089, China; (2) Environmental Meteorology Forecast Center of
Beijing-Tianjin-Hebei, Beijing; 100089, China; (3) Institute of Atmospheric Physics,
Chinese Academy of Sciences, Beijing; 100029, China
Corresponding author:Sun, Zhao-Bin(szb850804@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2202-2210
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this paper, the monthly average of NCEP(National Center for Environmental
Prediction)reanalysis data (2.5°×2.5°), the sounding data, and conventional
observation data in Beijing (54511 station) were used to analyze the atmospheric
pollution diffusion conditions in Beijing in recent 35 years. The main conclusions were:
in 1980~2015, the whole layer was warmer. After 1990, the temperature inversion
phenomenon was obvious, and the whole air was stable. The cold air's less effect on the
lower layer, lower frequency of great north wind speed and surface layer's convergence
led to the rising of pollution concentration. The location of sink motion at the high
level was lower and that of the ascending motion at the low level was higher. This led to
the constriction of the ascending motion below the boundary layer, worsening the
pollution diffusion condition. In 1980~1989, the atmospheric capacity index was steady,
while in 1990-1999, it fluctuated obviously and after 2000, it declined. In general, the
atmospheric capacity presented a gentle decline. In spring and winter of 1980-1989, as
well as spring and summer of 1990-2015, the atmospheric capacity was better. After 2000,
the atmospheric capacity was decreasing compared to the last 20 years no matter in which
season, and the difference of atmospheric capacity in seasons diminished. The boundary
layer was higher in spring and summer, and lower in fall and winter in recent 35 years.
© 2017, Science Press. All right reserved.
Number of references:31
Main heading:Atmospheric boundary layer
Controlled terms:Air pollution - Boundary layer flow - Boundary layers - Diffusion -
Pollution - Wind
Uncontrolled terms:Atmospheric pollution - Boundary layer heights - Lower frequencies -
National center for environmental predictions - Pollution concentration - Temperature
inversions - Vertical motions - Wind speed
Classification code:443.1 Atmospheric Properties - 451 Air Pollution - 631.1 Fluid
Flow, General
Numerical data indexing:Age 3.50e+01yr
DOI:10.13227/j.hjkx.201610149
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 12>
Accession number:20173804179832
Title:Comparison of Phosphate Adsorption onto Zirconium-Modified Bentonites with
Different Zirconium Loading Levels
Authors:Jiang, Bo-Hui (1); Lin, Jian-Wei (1); Zhan, Yan-Hui (1); Xing, Yun-Qing (1);
Huang, Hong (1); Chu, Ming (1); Wang, Xing-Xing (1)
Author affiliation:(1) College of Marine Science, Shanghai Ocean University, Shanghai;
201306, China
Corresponding author:Lin, Jian-Wei(jwlin@shou.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2400-2411
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this study, zirconium-modified bentonites (ZrMBs) with different zirconium
loading levels were prepared, and the adsorption behaviors of phosphate on these ZrMBs
were comparatively investigated using batch experiments. The results showed that the
kinetic process of phosphate on ZrMBs well followed the pseudo-second-second kinetic
model. The kinetic process was divided into three stages, including a rapid external
surface adsorption stage, a gradual adsorption stage where both the intra-particle
diffusion and film diffusion were rate-controlled, and a final equilibrium adsorption
stage. The equilibrium adsorption data of phosphate on ZrMBs could be well described by
the Langmuir, Freundlich, Sips and Dubinin-Radushkevich isotherm models. Phosphate
adsorption onto ZrMBs was more favorable under strongly acidic condition than under
weakly acidic or neutral condition, while phosphate adsorption onto ZrMBs under weakly
acidic or neutral condition was more favorable than that under alkaline condition.
Coexistence of Na<sup>+</sup>and K<sup>+</sup>slightly enhanced phosphate adsorption onto
ZrMBs, while coexisting Ca<sup>2+</sup>greatly enhanced the phosphate adsorption. The
presence of HCO<inf>3</inf><sup>-</sup>or SO<inf>4</inf><sup>2-</sup>inhibited the
adsorption of phosphate on ZrMBs. The mechanism for phosphate adsorption onto ZrMBs
followed the ligand exchange and inner-sphere complexing mechanism. The phosphate
adsorption capacity for ZrMB increased with increasing loading level of zirconium, while
the amount of phosphate adsorbed on unit mass of ZrO<inf>2</inf>in ZrMB decreased with
increasing loading amount of zirconium in ZrMB. When the loading amount of
ZrO<inf>2</inf>in ZrMB increased from 3.61% to 13.15%, the maximum phosphate adsorption
capacity (MPAC) for ZrMB increased from 3.83 to 9.03 mg·g<sup>-1</sup>, while a
further increase in the ZrO<inf>2</inf>loading amount to 19.63% resulted in a slight
increase of MPAC to 9.66 mg·g<sup>-1</sup>. However, an increase in the loading
amount of ZrO<inf>2</inf>in ZrMB from 3.61% to 19.63% caused a decrease of the MPAC for
the ZrO<inf>2</inf>located in ZrMB from 106 to 49.2 mg·g<sup>-1</sup>. Considering
both cost and adsorption capacity of adsorbent, the ZrMB with 13.15% of zirconium loading
amount could be more suitably used as an adsorbent to remove phosphate from aqueous
solution than the other ZrMBs. © 2017, Science Press. All right reserved.
Number of references:42
Main heading:Adsorption
Controlled terms:Bentonite - Kinetics - Phosphates - Solutions
Uncontrolled terms:Adsorption capacities - Comparison - Dubinin-Radushkevich -
Equilibrium adsorption - Intra-particle diffusion - Modified bentonites - Phosphate
adsorption - Phosphate adsorption capacity
Classification code:482.2 Minerals - 802.3 Chemical Operations - 931 Classical
Physics; Quantum Theory; Relativity
Numerical data indexing:Percentage 1.32e+01%, Percentage 1.96e+01%, Percentage 3.61e+00%
to 1.32e+01%, Percentage 3.61e+00% to 1.96e+01%
DOI:10.13227/j.hjkx.201611081
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 13>
Accession number:20173804179829
Title:Performance of Applying Scale Permeable Pavements for Control of Runoff Pollution
in an Area with High Groundwater Level
Authors:Jin, Jian-Rong (1); Li, Tian (1); Shi, Zhen-Bao (2)
Author affiliation:(1) State Key Laboratory of Pollution Control and Resource Reuse,
Tongji University, Shanghai; 200092, China; (2) Shanghai Water Resources Planning and
Design Research Institute, Shanghai; 200232, China
Corresponding author:Li, Tian(tianli@tongji.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2379-2384
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The purpose of this article was to study the effect of permeable pavements on
runoff pollution control and its possible influence on groundwater quality in the area
with high groundwater level. Three experimental permeable parking lots and one
impermeable parking lot were built in urban Shanghai in order to monitor their quality of
influent and effluent water under actual precipitation conditions, in order to
investigate the performance of pollutant control effects and to evaluate the possibility
of the pollution of groundwater. The results showed that all the three facilities could
effectively remove TP, TSS, COD, Cr, Mn, Cu, Zn, Pb and O&G, but imposed poor removal
efficiency on TN. Obvious release of NO<inf>3</inf><sup>-</sup>-N occurred in all three
pavements. The permeable interlocking concrete pavement using cement stabilized crushed
stones as base course and the one using crushed stones as base course had a better
removal efficiency on NH<inf>4</inf><sup>+</sup>-N than the previous concrete one. The
quality of effluent water from different permeable pavements had no significant
difference except NH<inf>4</inf><sup>+</sup>-N. The in-situ groundwater quality was
generally worse than background values of groundwater in Shanghai. Effluent water quality
of three permeable pavements was generally worse than that of the in-situ groundwater,
and a number of indicators belonged to or were close to groundwater class V standard. In
the area with high groundwater level, there was risk of groundwater pollution caused by
permeable pavements without liners. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Groundwater pollution
Controlled terms:Concretes - Efficiency - Effluents - Groundwater - Lead - Manganese -
Pollution - Pollution control - Quality control - Runoff - Water pollution - Water
pollution control - Water quality
Uncontrolled terms:Background value - Cement stabilized - Development of sponge city -
Effluent waters - Permeable pavements - Pollutant control - Removal efficiencies - Runoff
pollution
Classification code:412 Concrete - 444.1 Surface Water - 444.2 Groundwater - 445.2
Water Analysis - 452.3 Industrial Wastes - 453 Water Pollution - 453.2 Water Pollution
Control - 543.2 Manganese and Alloys - 546.1 Lead and Alloys - 913.1 Production
Engineering - 913.3 Quality Assurance and Control
DOI:10.13227/j.hjkx.201612056
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 14>
Accession number:20173804179838
Title:Influence of Phosphate on Nitrogen Removal Efficiency of ANAMMOX Sludge
Authors:Zhou, Zheng (1, 2); Liu, Kai (1, 2); Wang, Fan (1, 2); Lin, Xing (1, 2); Li,
Xiang (1, 2); Huang, Yong (1, 2); Gu, Cheng-Wei (1, 2)
Author affiliation:(1) School of Environment Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215002, China; (2) Institute of Environmental
Biotechnology, Suzhou University of Science and Technology, Suzhou; 215002, China
Corresponding author:Huang, Yong(yhuang@mail.usts.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2453-2460
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this study, the effect of phosphate concentration on the nitrogen removal
efficiency of ANAMMOX sludge was researched. The inhibition kinetic parameters were
fitted and the abundance of ANAMMOX bacteria in the reactor before and after phosphate
inhibition was analyzed by Real-time PCR. The short-term experiments showed that there
was no significant effect on the nitrogen removal efficiency of ANAMMOX sludge when
phosphate concentration was less than 30mg·L<sup>-1</sup>. With the increase of
influent phosphate concentration, the removal rate of nitrogen decreased rapidly. When
the phosphate concentration was raised to 200mg·L<sup>-1</sup>, the activity of
ANAMMOX sludge reached a complete inhibition state. The parameters of phosphate
inhibition were fitted by Haldane inhibition model. The half-inhibition constant was 70.1
mg·L<sup>-1</sup>. The long-term results showed that when the phosphate
concentration was less than 50 mg·L<sup>-1</sup>, the effect on the nitrogen
removal efficiency of ANAMMOX sludge was not significant. When the phosphate
concentration reached 70-90 mg·L<sup>-1</sup>, The activity of ANAMMOX sludge was
obviously affected, and the stability could be restored after a certain period.
Increasing the phosphate concentration had a more significant effect and resulted in a
longer recovery time. Finally, when the concentration of phosphate reached 100
mg·L<sup>-1</sup>, the nitrogen removal efficiency of ANAMMOX was seriously
inhibited. The rate of nitrogen removal decreased from 158.33 g·
(m<sup>3</sup>·d)<sup>-1</sup>to 60.17 g·(m<sup>3</sup>·d)<sup>-
1</sup>, resulting in 62% inhibition. The results of real-time PCR showed that the
concentration of ANAMMOX was decreased from (9.97±0.86)
×10<sup>7</sup>cells·mL<sup>-1</sup>to (8.26±0.54)
×10<sup>7</sup>cells·mL<sup>-1</sup>in the restraining sludge system, and
there was a relatively reduced trend. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Nitrogen removal
Controlled terms:Efficiency - Enzyme kinetics - Nitrogen - Phosphates - Polymerase chain
reaction - Wastewater treatment
Uncontrolled terms:ANAMMOX - Inhibition constants - Inhibition kinetics - Long-term
results - Nitrogen removal efficiency - Phosphate concentration - Phosphate inhibition -
Real-time PCR
Classification code:452.4 Industrial Wastes Treatment and Disposal - 801.2 Biochemistry
- 804 Chemical Products Generally - 913.1 Production Engineering
Numerical data indexing:Mass_Density 1.00e-01kg/m3, Mass_Density 2.00e-01kg/m3,
Mass_Density 3.00e-02kg/m3, Mass_Density 5.00e-02kg/m3, Mass_Density 7.00e-02kg/m3 to
9.00e-02kg/m3, Mass_Density 7.01e-02kg/m3, Percentage 6.20e+01%
DOI:10.13227/j.hjkx.201612061
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 15>
Accession number:20173804179830
Title:Removal of 2, 4-dichlorophenol in Underground Water by Stabilized Nano Zero-valent
Iron
Authors:Zhang, Yong-Xiang (1); Chang, Shan (1); Li, Fei (1); Xu, Yi (1); Gao, Wei-Chun
(1)
Author affiliation:(1) Key Laboratory of Beijing for Water Quality Science and Water
Environment Recovery Engineering, Beijing University of Technology, Beijing; 100124,
China
Corresponding author:Chang, Shan(xxxcshine@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2385-2392
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To restrain the nano zero-valent iron (NZVI) in aqueous solution from being
reunited and oxidized, this paper used sodium carboxymethyl starch (CMS), which is an
environmentally friendly and cheap material, for coating and surface modification of NZVI
so as to improve its dispersity and suspension property. Transmission Electron Microscope
(TEM) and X-ray diffraction (XRD) were used to study the microstructure and components of
the modified NZVI, and the 2, 4-dichlorophenol 2, 4-(DCP) removal efficiency was
researched through chemical experiment. Experiments showed that the modified NZVI was
about 80~100 nm in diameter, present as chain or dispersed particles. The main component
was zero-valent iron, and it had strong reducibility. When the proportion of CMS was
80.00%, the suspension property was the best; The NZVI after CMS coating and surface
modification retained the original activity. In the experiment investigating the removal
effect of 2, 4-DCP using different proportion of cladding, the same finding was obtained.
When the CMS's proportion was 80%, the removal effect was the best, reaching up to
83.69%, and the dechlorination and degradation were apparent. © 2017, Science Press.
All right reserved.
Number of references:25
Main heading:Chemicals removal (water treatment)
Controlled terms:Coatings - Dechlorination - Degradation - Groundwater - Iron - Solutions
- Surface treatment - Suspensions (fluids) - Transmission electron microscopy - X ray
diffraction
Uncontrolled terms:2 ,4-Dichlorophenol - Different proportions - Disperse - Dispersed
particle - Nano zero-valent irons - Removal efficiencies - Sodium carboxymethyl starch -
Suspension properties
Classification code:444.2 Groundwater - 545.1 Iron - 802.2 Chemical Reactions - 804
Chemical Products Generally - 813.2 Coating Materials
Numerical data indexing:Percentage 8.00e+01%, Percentage 8.37e+01%, Size 8.00e-08m to
1.00e-07m
DOI:10.13227/j.hjkx.201609254
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 16>
Accession number:20173804179812
Title:Characteristics of Volatile Organic Compounds Emitted from Biomass-pellets-fired
Boilers
Authors:Wu, Chang-Da (1); Zhang, Chun-Lin (1); Bai, Li (2); Shen, Li-Ran (1); Wang, Bo-
Guang (1); Liu, Jun (2); Yang, Li-Hui (2)
Author affiliation:(1) Institute for Environmental and Climate Research, Jinan
University, Guangzhou; 511443, China; (2) Guangdong Environmental Monitoring Center,
Guangzhou; 510308, China
Corresponding author:Zhang, Chun-Lin(zhchunlin@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2238-2245
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A pre-concentrator-GC-MS/FID was used to investigate the characteristics of
volatile organic compounds (VOCs) based on the flue gases emitted from five biomass-
pellets-fired boilers in this study. And the concentrations of particle matter, nitrogen
oxides (NO<inf>x</inf>), sulfur dioxides (SO<inf>2</inf>) and mercury and its compounds
were also measured. Results demonstrated that the concentrations of SO<inf>2</inf>and
mercury and its compounds emitted from all five boilers were relatively low, which were
lower than the national emission standard, while NO<inf>x</inf>and particles from some
boilers were higher than the standard. The mass concentration of 56 VOC species was in
the range of (872.43±293.80)-(6 929.66±1 137.25) μg·m<sup>-
3</sup>, and the analysis of influencing factors implied that the furnace temperatures
and loads havd strong negative correlations with the concentration of total VOCs. The
emission components of VOCs were mainly composed of alkenes (41%-59%) including ethylene,
1-butene, cis-2-butene and 1-hexene; alkanes (27%-49%) including hexane, isopentane and
cyclopentane; and aromatics (6%-18%) including benzene and toluene. Moreover, the maximum
incremental reactivity (MIR) method was applied to analyze ozone formation potential
(OFP) of VOCs. The contribution of OFP of five boilers was mainly from alkenes, occupying
a relatively high percentage of 76%-90%, and that of alkanes was in the range of 6% to
19%. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Mercury compounds
Controlled terms:Biomass - Boilers - Butenes - Ethylene - Gas chromatography -
Hydrocarbons - Mercury (metal) - Nitrogen oxides - Organic compounds - Ozone - Paraffins
- Pelletizing - Volatile organic compounds
Uncontrolled terms:Benzene and Toluene - Biomass pellet fuels - Emission profile -
Furnace temperatures - Mass concentration - Maximum incremental reactivities - Negative
correlation - Ozone formation potentials
Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline
Earth Metals - 614 Steam Power Plants - 802.3 Chemical Operations - 804 Chemical
Products Generally
Numerical data indexing:Percentage 2.70e+01% to 4.90e+01%, Percentage 4.10e+01% to 5.90e
+01%, Percentage 6.00e+00% to 1.80e+01%, Percentage 6.00e+00% to 1.90e+01%, Percentage
7.60e+01% to 9.00e+01%
DOI:10.13227/j.hjkx.201611209
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 17>
Accession number:20173804179810
Title:Impact of Mountain-Valley Wind Circulation on Typical Cases of Air Pollution in
Beijing
Authors:Dong, Qun (1, 2); Zhao, Pu-Sheng (2, 3); Wang, Ying-Chun (4); Miao, Shi-Guang
(2); Gao, Jian (5)
Author affiliation:(1) Chinese Academy of Meteorological Sciences, Beijing; 100081,
China; (2) Institute of Urban Meteorology, China Meteorological Administration, Beijing;
100089, China; (3) Environmental Meteorology Forecast Center of Beijing-Tianjin-Hebei,
Beijing; 100089, China; (4) Beijing Meteorological Administration, Beijing; 100089,
China; (5) Chinese Research Academy of Environmental Sciences, Beijing; 100012, China
Corresponding author:Zhao, Pu-Sheng(pszhao@ium.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2218-2230
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The impact of mountain-valley wind circulation on the typical examples of
pollution was analyzed through the selected pollution process, combining with the hourly
PM<inf>2.5</inf>concentrations and meteorological data in Haidian, Shangdianzi and
Lishuiqiao in Autumn and Winter from 2013 to 2015, and also the data of Tower of
atmospheric, wind profile of Haidian and automatic meteorological stations in the same
period. The analysis showed that the average wind speed of valley wind was greater than
that of the mountain wind, and they both would be “broken” during the
conversion time in the mountain-valley wind days. In contrast with the mountain wind, the
average duration of valley wind in autumn was longer than that in winter, and the start
time of valley wind in autumn was earlier than the same wind in winter; influenced by the
topography of Beijing area, the direction boundary of the transformation between
mountain-valley wind was northeast-southwest. The frontier of mountain wind in autumn
could fall down to the South Second Ring Road, and it could be pressed to the South Third
Ring Road in winter; the average thickness of valley wind was greater than the mountain
wind. Whether the moment was in autumn or winter, in the south, the average time when the
PM<inf>2.5</inf>concentration began to rise, was earlier than in the north in a day; the
time when concentration of pollutants began to rise in the fall was earlier than in the
winter, but the time when the concentration began to decline showed the opposite trend.
The transition zone of different PM<inf>2.5</inf>concentration in Beijing in autumn or
winter located in South Second Ring Road (South Third Ring Road), and it would move to
south over time. Duration autumn and winter seasons, this phenomenon lasted about 4 and 2
hours, respectively. Furthermore, the positive and negative feedback effects may exist
between pollutant concentrations and mountain-valley wind. © 2017, Science Press.
All right reserved.
Number of references:41
Main heading:Landforms
Controlled terms:Air pollution - Meteorology - Pollution - Roads and streets -
Transportation - Wind - Wind effects
Uncontrolled terms:Meteorological data - Meteorological station - Mountain valleys -
PM2.5 - PM2.5 concentration - Pollutant concentration - Pollution process - Thickness
Classification code:406.2 Roads and Streets - 443.1 Atmospheric Properties - 451 Air
Pollution - 481.1 Geology
Numerical data indexing:Time 7.20e+03s, Time 1.44e+04s
DOI:10.13227/j.hjkx.201609231
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 18>
Accession number:20173804179839
Title:Characteristics and Mechanism of Biological Nitrogen and Phosphorus Removal
Granular Sludge Under Carbon Source Stress
Authors:Qin, Shi-You (1, 2); Chen, Wei (1); Ma, Zhao-Rui (2, 3); Liu, Xiao-Ying (2, 4);
Chen, Xiao-Guo (5); Yu, Wen-Tao (2); Xia, Yuan-Yuan (2); Huang, Jian (2)
Author affiliation:(1) School of Urban Construction, Wuhan University of Science and
Technology, Wuhan; 430065, China; (2) School of Civil Engineering & Architecture,
Wuhan University of Technology, Wuhan; 430070, China; (3) Weihai Architectural Desigh
Institude Co., Ltd., Weihai; 264200, China; (4) Urban Water Supply and Water Pollution
Control Technology Research Center, Wuhan University of Technology, Wuhan; 430070, China;
(5) School of Resources and Environmental Engineering, Wuhan University of Technology,
Wuhan; 430070, China
Corresponding author:Liu, Xiao-Ying(xy2000225@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2461-2469
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In SBR reactor, the mature granular sludge fed with sodium acetate was gradually
cultivated with different carbon sources (sodium acetate/glucose ratio was 1∶0,
3∶1, 1∶1, 1∶3 and 0∶1, in terms of COD, respectively). During the
five stages, the physical, biochemical properties, extracellular polymeric substances
(EPS), phosphorus fractions and nitrogen and phosphorus removal efficiency of granular
sludge were studied. 705 days' experimental results were showed as follows. At stage IV,
the granular sludge had the smallest diameter of 0.5 mm; moreover the phosphorus
release/uptake rate, denitrification rate and the total phosphorus (TP) content were the
lowest. While at stages I and II, the phosphorus release/uptake and denitrification rates
were the highest, meanwhile, the TP content reached up to 72.36 mg·g<sup>-1</sup>,
and the EPS content was about 350 mg·g<sup>-1</sup>, as a result, the nitrogen and
phosphorus removal efficiencies were both over 94%. Nevertheless at stage V, the
biochemical rates were slightly slower than values of stages I and II, simultaneously the
TP, glycogen and EPS contents in sludge were maintained at 69.60 mg·g<sup>-
1</sup>, 224.18 mg·g<sup>-1</sup>and 200 mg·g<sup>-1</sup>, respectively,
while high nitrogen and phosphorus removal efficiency was obtained. During all stages,
Ca-P was the main phosphorus fraction, and inorganic phosphorus(IP) was closely related
to phosphorus removal of granular sludge. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Biological water treatment
Controlled terms:Denitrification - Efficiency - Granular materials - Nitrogen - Nitrogen
removal - Phosphorus - Polymers - Removal - Sodium
Uncontrolled terms:Carbon source - Extracellular polymeric substances - Granular sludge -
Nitrogen and phosphorus removal - Phosphorus fractionation
Classification code:445.1 Water Treatment Techniques - 549.1 Alkali Metals - 802.2
Chemical Reactions - 804 Chemical Products Generally - 815.1 Polymeric Materials -
913.1 Production Engineering - 951 Materials Science
Numerical data indexing:Percentage 9.40e+01%
DOI:10.13227/j.hjkx.201610027
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 19>
Accession number:20173804179831
Title:Enhancement of Sulfamerazine Degradation Under H<inf>2</inf>O<inf>2</inf>/KI System
by Ultrasound and UVA Irradiation
Authors:Wei, Hong (1); Sun, Bo-Cheng (1); Yang, Xiao-Yu (1); Li, Ke-Bin (2)
Author affiliation:(1) State Key Laboratory Base of Eco-Hydraulic Engineering in Arid
Area, Xi'an University of Technology, Xi'an; 710048, China; (2) Key Laboratory of
Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, School of
Chemistry and Material Science, Northwest University, Xi'an; 710069, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2393-2399
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The degradation of Sulfamerazine(SMR) enhanced by molecular iodine under
ultrasound/H<inf>2</inf>O<inf>2</inf>/KI and UVA/H<inf>2</inf>O<inf>2</inf>/KI was
investigated. The main affecting parameters, iodine generation, active species and
degradation products in the two systems were discussed as well. The experimental results
showed that sulfamerazine degradation was effectively enhanced in both systems, and the
enhancement of ultrasound was much better. The initial pH had an obvious effect on
sulfamerazine removal in the range of 2.6-5.6, and the SMR removal efficiency decreased
with initial pH value. Iodine radicals (I<inf>2</inf><sup>-</sup>·, I·)
were determined as the main species in ultrasound/H<inf>2</inf>O<inf>2</inf>/KI and
UVA/H<inf>2</inf>O<inf>2</inf>/KI systems. HPLC/MS/MS analysis indicated that iodo-
benzene was detected in both system. © 2017, Science Press. All right reserved.
Number of references:32
Main heading:Ultrasonics
Controlled terms:Degradation - Iodine - Irradiation
Uncontrolled terms:Active species - Degradation products - H2O2/KI - Initial pH value -
Molecular iodine - Removal efficiencies - Sulfamerazine - Uva irradiations
Classification code:753.1 Ultrasonic Waves - 802.2 Chemical Reactions - 804 Chemical
Products Generally
DOI:10.13227/j.hjkx.201611146
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 20>
Accession number:20173804179824
Title:Temporal and Spatial Variation Characteristics of Nitrogen and Phosphorus in
Sediment Pore Water and Overlying Water of Dianchi Caohai Lake
Authors:Wang, Yi-Ru (1, 2, 3); Wang, Sheng-Rui (2, 3); Jiao, Li-Xin (2, 3); Zhang, Yun
(2, 3); Gao, Qiu-Sheng (2, 3); Yang, Feng (2, 3)
Author affiliation:(1) School of Environment Science and Engineer, Kunming University of
Science and Technology, Kunming; 650500, China; (2) State Key Laboratory of Environmental
Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences,
Beijing; 100012, China; (3) Research Center of Lake Eco-Environment, State Environmental
Protection Key Laboratory for Lake Pollution Control, Chinese Research Academy of
Environmental Sciences, Beijing; 100012, China
Corresponding author:Jiao, Li-Xin(287559418@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2336-2344
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The vertical variation in the contents of nitrogen and phosphorus with different
forms in pore water and overlying water was continuously measured for twelve months in
Dianchi Caohai Lake. The research revealed the difference of N or P concentration between
pore water and overlying water and the contribution of nitrogen and phosphorus forms. It
is significant to understand the formation of N and P and the ratio of N/P in pore water
in the fields of lake eutrophication and the control of internal nutrient-loading. The
results demonstrated that: ①Sediment pore water ρ(NH<inf>4</inf><sup>+</sup>-N)
was significantly higher than that in overlying water. But for NO<inf>3</inf><sup>-
</sup>-N, it obeyed the opposite rule. From Feb. to Nov., ρ(SRP) was higher than that
in overlying water, while the opposite rule was found in Dec. and Jan.. ②In
sediment pore water, ρ(NH<inf>4</inf><sup>+</sup>-N) or ρ(SRP) presented the
maximum contribution ratio of DTN (78%) or DTP (61%), respectively. While, in overlying
water, the maximum contribution ratio was DON(44%) or DOP(81%), respectively. Compared to
those in spring and winter, the contribution of ρ(NH<inf>4</inf><sup>+</sup>-N) and
ρ(SRP) increased distinctly and the contribution of ρ(NO<inf>3</inf><sup>-
</sup>-N), ρ(DON) and ρ(DOP) dropped obviously in summer and autumn. ③The
temporal variations for the ratios of DTN/DTP, (NH<inf>4</inf><sup>+</sup>-N
+NO<inf>3</inf><sup>-</sup>-N)/SRP and DON/DOP in pore water were all in the following
sequence: spring>winter>summer>autumn. In overlying water, the N/P ratio in
spring was relatively higher than that in the other three seasons. © 2017, Science
Press. All right reserved.
Number of references:42
Main heading:Water
Controlled terms:Eutrophication - Lakes - Nitrogen - Phosphorus - Sediments
Uncontrolled terms:Contribution ratios - Lake eutrophications - N/p ratios - Nitrogen and
phosphorus - Sediment pore water - Temporal and spatial variation - Vertical
distributions - Vertical variation
Classification code:483 Soil Mechanics and Foundations - 804 Chemical Products
Generally
Numerical data indexing:Percentage 4.40e+01%, Percentage 6.10e+01%, Percentage 7.80e+01%,
Percentage 8.10e+01%
DOI:10.13227/j.hjkx.201611098
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 21>
Accession number:20173804179809
Title:Precipitation and Its Effects on Atmospheric Pollutants in a Representative Region
of Beijing in Summer
Authors:Han, Li-Hui (1); Zhang, Hai-Liang (1); Xiang, Xin (1); Zhang, Peng (1); Cheng,
Shui-Yuan (1); Wei, Wei (1)
Author affiliation:(1) Key Laboratory of Beijing on Regional Air Pollution Control,
College of Environmental and Energy Engineering, Beijing University of Technology,
Beijing; 100124, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2211-2217
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Atmospheric precipitation samples were collected in a representative region of
Beijing in summer of 2015 to investigate the physical and chemical characteristics of
atmospheric precipitation, the changes and causes of major chemical components in
rainwater during the course of typical precipitation, and the impacts of typical
precipitation processes on atmospheric pollutants. The volume-weighted mean pH value of
rainwater in the representative region of Beijing in summer was 6.21 with the range of
5.15-7.34, and acid rain seldom occurred. The pollution elements Cd, Ca and Mn were
moderately enriched, and Cu, Zn, Pb and S were seriously enriched in rainwater, of which
Ca and S were main pollution elements, which accounted for 45.43% and 43.93% of the total
pollution elements respectively, and Zn, Mn, Cu, Pb and Cd were main heavy metal
pollution elements, which accounted for 1.32% of the total pollution elements. Different
rates of precipitations could have different impacts on atmospheric pollutants.
PM<inf>2.5</inf>could be scavenged by raindrop, and SO<inf>2</inf>, NO<inf>2</inf>and
O<inf>3</inf>could be scavenged greatly by raindrop during the precipitation episode at a
relatively high rainfall rate, containing four significant stages, such as clear-out of
atmospheric pollutants, accumulation, both accumulation and clear-out, and another
clear-out of airborne pollutants. Atmospheric pollutants such as PM<inf>2.5</inf>,
SO<inf>2</inf>, NO<inf>2</inf>and O<inf>3</inf>could mainly be scavenged by in-cloud
scavenging processes during the precipitation episode at a relatively low rainfall rate,
including four important stages, such as clear-out, both clear-out and accumulation,
accumulation, and another clear-out of atmospheric pollutants. The effect of rainfall at
a relatively high rate on atmospheric pollutants was bigger than that of rainfall at a
relatively low rate. © 2017, Science Press. All right reserved.
Number of references:22
Main heading:Precipitation (meteorology)
Controlled terms:Acid rain - Atmospheric chemistry - Cadmium - Calcium - Copper - Drops -
Heavy metals - Lead - Manganese - Nitrogen compounds - Nitrogen oxides - Pollution -
Rain - Scavenging - Zinc
Uncontrolled terms:Atmospheric pollutants - Atmospheric precipitation - Cause - Chemical
compositions - Precipitation process
Classification code:443.1 Atmospheric Properties - 443.3 Precipitation - 451.1 Air
Pollution Sources - 531 Metallurgy and Metallography - 543.2 Manganese and Alloys -
544.1 Copper - 546.1 Lead and Alloys - 546.3 Zinc and Alloys - 549.2 Alkaline Earth
Metals - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals -
612.1 Internal Combustion Engines, General - 804.2 Inorganic Compounds
Numerical data indexing:Percentage 1.32e+00%, Percentage 4.39e+01%, Percentage 4.54e+01%
DOI:10.13227/j.hjkx.201610133
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 22>
Accession number:20173804179822
Title:Comparative Study of SWAT and DNDC Applied to N Leach and Export from Subtropical
Watershed
Authors:Han, Ning (1, 2); Chen, Wei-Liang (3); Gao, Yang (1, 2); Hao, Zhuo (1, 2); Yu,
Gui-Rui (2)
Author affiliation:(1) Key Laboratory of Ecosystem Network Observation and Modeling,
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of
Sciences, Beijing; 100101, China; (2) College of Resources and Environment, University of
Chinese Academy of Sciences, Beijing; 100049, China; (3) Research Center for Eco-
Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085, China
Corresponding author:Gao, Yang(gaoyang@igsnrr.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2317-2325
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this study, N export from Xiangxi River Basin in subtropical watershed was
measured by long-term monitoring, N loss in the basin was simulated by DNDC and SWAT
models in order to provide a scientific basis for the establishment of nitrogen
circulation model in subtropical watershed. The results showed that N loss with runoff
was well simulated by DNDC and SWAT. The key parameters of DNDC were precipitation, slope
and amount of N fertilization, while the key parameters of SWAT were GW_DELAY, CANMX,
ALPHA_BF and ESCO. The deviations between simulations and observations of runoff, TN and
NO<inf>3</inf><sup>-</sup>-N simulated by DNDC were 5.19%, 8.10% and 71.70%,
respectively. Whereas the deviations between the emission of TN, NO<inf>3</inf><sup>-
</sup>-N and NH<inf>4</inf><sup>+</sup>-N simulated by SWAT and observations were 2.04%,
14.29% and 8.89%. The results indicated that the precision of N export simulated by SWAT
was higher than DNDC in Xiangxi River Basin, and N loss in this area was mainly
controlled by precipitation and nitrogen cycle of terrestrial ecosystem. The temporal and
spatial distribution of N loss in Xiangxi River Basin was analyzed by comparing
simulation results, which further demonstrated that DNDC and SWAT had simulation ability
for N loss in subtropical watershed. © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Watersheds
Controlled terms:Nitrogen - Nitrogen fertilizers - Rivers - Runoff - Tropics
Uncontrolled terms:Circulation models - Comparative studies - DNDC - Long term monitoring
- Simulation - SWAT - Temporal and spatial distribution - Terrestrial ecosystems
Classification code:443 Meteorology - 444.1 Surface Water - 804 Chemical Products
Generally
Numerical data indexing:Percentage 1.43e+01%, Percentage 2.04e+00%, Percentage 5.19e+00%,
Percentage 7.17e+01%, Percentage 8.10e+00%, Percentage 8.89e+00%
DOI:10.13227/j.hjkx.201611151
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 23>
Accession number:20173804179814
Title:Characteristic Study on the “Weekend Effect” of Atmospheric
O<inf>3</inf>in Northern Suburb of Nanjing
Authors:Wang, Jun-Xiu (1); An, Jun-Lin (1); Shao, Ping (1); Zou, Jia-Nan (1); Lin, Xu
(2); Zhang, Yu-Xin (1)
Author affiliation:(1) Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters, Key Laboratory for Aerosol-Cloud-Precipitation of China
Meteorological Administration, Nanjing University of Information Science &
Technology, Nanjing; 210044, China; (2) Hangzhou Environmental Monitoring Center Station,
Hangzhou; 310007, China
Corresponding author:An, Jun-Lin(junlinan@nuist.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2256-2263
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The data of ozone (O<inf>3</inf>) and its precursors (NO<inf>x</inf>, CO, VOCs)
observed at northern suburb of Nanjing from December 01, 2013 to November 30, 2014 were
used to analyze the difference of pollutant concentrations on weekends and weekdays, and
its causes. The results showed that there was an obvious “Weekend Effect” in
northern suburb of Nanjing. The mass concentrations of O<inf>3</inf>on weekdays were
higher than those on weekends, whereas mass concentrations of its precursors were higher
on the weekends; The average mass concentrations of O<inf>3</inf>were 19.84
μg·m<sup>-3</sup>, 53.45 μg·m<sup>-3</sup>, 57.17
μg·m<sup>-3</sup>, and 40.43 μg·m<sup>-3</sup>in winter, spring,
summer, and autumn respectively. Compared with other seasons, “Weekend Effect
” was more distinct in spring. The value of NO<inf>2</inf>/NO was 4.81% higher on
weekdays (3.63) than on weekends (3.46). The longer cumulative time and higher
accumulation rate of O<inf>3</inf>, and the stronger atmospheric oxidation capacity on
weekdays were responsible for the higher O<inf>3</inf>mass concentrations on weekdays.
The correlation coefficients of the mass concentrations of O<inf>3</inf>with VOCs,
NO<inf>x</inf>, NO, and NO<inf>2</inf>were higher on weekdays than on weekends. ©
2017, Science Press. All right reserved.
Number of references:29
Main heading:Nitrogen oxides
Controlled terms:Nitrogen compounds - Volatile organic compounds
Uncontrolled terms:Accumulation rates - Atmospheric oxidation capacity - Correlation
coefficient - Mass concentration - Nanjing - Pollutant concentration - Weekend effects
Classification code:804.1 Organic Compounds - 804.2 Inorganic Compounds
Numerical data indexing:Percentage 4.81e+00%
DOI:10.13227/j.hjkx.201607226
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 24>
Accession number:20173804179587
Title:Effect of Activated Carbon Addition on the Anaerobic Fermentation of Corn Straw in
Mesophilic and Thermophilic Conditions
Authors:Gan, Rong (1, 2); Ge, Ming-Min (1, 2); Liu, Yong-Di (1, 2); Jia, Hong-Hua (1, 2);
Yan, Zhi-Ying (3); Yong, Xiao-Yu (1, 2); Wu, Xia-Yuan (1, 2); Zhou, Jun (1, 2)
Author affiliation:(1) College of Biotechnology and Pharmaceutical Engineering, Nanjing
Technology University, Nanjing; 211816, China; (2) Bioenergy Research Institute, Nanjing
Technology University, Nanjing; 211816, China; (3) Chengdu Institute of Biology, Chinese
Academy of Sciences, Chengdu; 610041, China
Corresponding author:Zhou, Jun(zhoujun@njtech.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2607-2616
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to improve the methane production and concentration, effect of
activated carbon addition on the anaerobic fermentation of corn straw under the
conditions of mesophilic temperature (38℃) and thermophilic temperature(50℃)
was investigated in this study. The results showed that the addition of activated carbon
could significantly promote methane production. Compared with the control group in
mesophilic and thermophilic conditions, cumulative methane production could be increased
by 63% and 96% in test groups. By DGGE analysis, the bacterium enriched by addition of
activated carbon was mainly Clostridiales bacterium, compared to Bacillus (without adding
activated carbon) in the thermophilic system, while the differences in fermentation with
adding activated carbon and without adding activated carbon was not significant in the
mesophilic system. With addition of activated carbon, the archaea enriched in the
fermentation liquid was mainly Methanosaeta concilii in the mesophilic system, whereas
the archaea enriched in the fermentation liquid was mainly Methanosarcina acetivorans in
the thermophilic system. The archaea enriched on activated carbon was mainly Methanosaeta
concilii at mesophilic temperature, while the archaea enriched on activated carbon was
mainly Methanosarcina thermophila at thermophilic temperature. © 2017, Science
Press. All right reserved.
Number of references:26
Main heading:Activated carbon
Controlled terms:Bacteria - Bacteriology - Fermentation - Methane - Microorganisms
Uncontrolled terms:Anaerobic fermentation - Carrier - Corn straws - Mesophilic
temperature - Methanosarcina acetivorans - Methanosarcina thermophila - Thermophilic
conditions - Thermophilic temperatures
Classification code:461.9 Biology - 804 Chemical Products Generally - 804.1 Organic
Compounds
Numerical data indexing:Percentage 6.30e+01%, Percentage 9.60e+01%
DOI:10.13227/j.hjkx.201607207
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 25>
Accession number:20173804179835
Title:Effect of Temperature on PAO Activity and Substrate Competition
Authors:Zhang, Ling (1); Peng, Dang-Cong (1); Chang, Die (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Corresponding author:Peng, Dang-Cong(dcpeng@xauat.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2429-2434
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To investigate the effect of temperature on the activity of high-temperature
phosphate accumulating organisms (PAO<inf>HT</inf>) and their competitive ability for the
substrate, the sludge from an enhanced biological phosphorus removal (EBPR) reactor
stably operated at the high temperature of 30℃ was used. The results showed that
PAO<inf>HT</inf>activity and their competitive ability for the substrate increased with
temperature increasing from 15℃ to 30℃. When the temperature was as higher as
30℃, the rates of anaerobic phosphorus release, aerobic phosphorus uptake and
acetate uptake of PAO<inf>HT</inf>were 239.46 mg·(g·h)<sup>-1</sup>, 79.90
mg·(g·h)<sup>-1</sup>, 357.47 mg·(g·h)<sup>-1</sup>,
respectively. The corresponding value of ΔP/ΔHAc was 0.628, which was
considerably higher than that of PAO reported in literatures. A simplified Arrhenius
equation was used to describe the effect of temperature on the rates of anaerobic
phosphorus release, aerobic phosphorus uptake and acetate uptake, and the temperature
coefficients were 1.08, 1.07 and 1.05, respectively. © 2017, Science Press. All
right reserved.
Number of references:28
Main heading:Temperature
Controlled terms:Biological water treatment - Ferroelectric films - Fluorescence
microscopy - Ion sensitive field effect transistors - Phosphorus - Wastewater treatment
Uncontrolled terms:Arrhenius equation - Competitive ability - Effect of temperature -
Enhanced biological phosphorus removal - Fluorescence in situ hybridization - Phosphate-
accumulating organisms - Phosphorus accumulating organisms - Temperature coefficient
Classification code:445.1 Water Treatment Techniques - 452.4 Industrial Wastes
Treatment and Disposal - 641.1 Thermodynamics - 708.1 Dielectric Materials - 714.2
Semiconductor Devices and Integrated Circuits - 804 Chemical Products Generally - 931.4
Quantum Theory; Quantum Mechanics
DOI:10.13227/j.hjkx.201609214
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 26>
Accession number:20173804179823
Title:Comparison of Relationship Between Conduction and Algal Bloom in Pengxi River and
Modao River in Three Gorges Reservoir
Authors:Jiang, Wei (1, 2); Zhou, Chuan (1, 2); Ji, Dao-Bin (3); Liu, De-Fu (3); Ren, Yu-
Shuang (1, 2); Douglas, Haffner (1, 2, 4); Xie, De-Ti (1, 2); Zhang, Lei (1, 2, 4)
Author affiliation:(1) College of Resource and Environment, Southwest University,
Chongqing; 400716, China; (2) Innovative Monitoring and Prediction of Non-point Sources
Pollution and Water Quality in the Three Gorges Reservoir Catchment, Chongqing; 400716,
China; (3) Engineering Research Centre of Eco-Environment in the Three Gorges Reservoir
Region, Ministry of Education, Three Gorges University, Yichang; 443000, China; (4) Great
Lakes Environmental Research Center, University of Windsor, Windsor; ON; N9B 3P4, Canada
Corresponding author:Zhang, Lei(zhanglei5401@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2326-2335
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Pengxi River is the largest tributary in the northern bank of Yangtze River in
the Three Gorges Reservoir (TGR) region, and serious algal bloom has been reported since
2003 when the TGR dam started impounding water. On the other hand, Modao River, a
tributary in TGR locating in the same county with Pengxi River, was rarely reported with
algal bloom in the same time period. In this study, water samples were collected on the
same day in both rivers in spring and summer, the most likely blooming seasons in TGR, to
compare the water quality parameters and Chlorophyll-a(Chl-a) concentration dynamics in
order to understand the mechanism of algal bloom in TGR. The results showed that the
maximum value of Chl-a in Pengxi river reached 60.5 μg·L<sup>-1</sup>in spring,
and was only 7.8 μg·L<sup>-1</sup>in summer, while in Modao river the Chl-a
content was 2.92 μg·L<sup>-1</sup>in spring and 7.48 μg·L<sup>-
1</sup>in summer. Both rivers stratified during samplings, but having layers of
thermocline and hypolimnion with the lack of epilimnion, and most of Chl-a content was
located in thermocline. Also in both rivers, TN and TP exceeded the international
threshold for eutrophication, with the average TN and TP values of 2.305
mg·L<sup>-1</sup>and 0.053 mg·L<sup>-1</sup>in Pengxi River in spring, and
1.673 mg·L<sup>-1</sup>and 0.097 mg·L<sup>-1</sup>in summer, respectively,
while in Modao River the values were 1.875 mg·L<sup>-1</sup>and 0.075
mg·L<sup>-1</sup>in spring, and 1.79 mg·L<sup>-1</sup>and 0.054
mg·L<sup>-1</sup>in summer respectively. Nutrients concentrations showed no
significant correlation with Chl-a. On the other hand, conductivity value and trend were
totally different between the two rivers: in Modao River in spring, the conductivity in
upstream was only 75% of that in the main stream of the Yangtze River, and the backwater
from the main stream reached to the middle in Modao river, where the highest Chl-a among
all the river sampling sites was detected; summer conductivity distribution was similar
with that in spring. Different from Modao River, the conductivity in upstream of Pengxi
River in spring was 150% of that in the main stream of Yangtze, the backwater from the
main stream reached area between sampling sites of PX04 and PX05 (upper than the middle
reach); its upstream had significantly high content of Chl-a and conductivity, and these
two factors were significantly positively correlated. The study showed that other than N
and P, other ions in the Pengxi River played an important role in bursting
“bloom”, and need to be considered regarding bloom control. © 2017,
Science Press. All right reserved.
Number of references:29
Main heading:Rivers
Controlled terms:Chlorophyll - Electric conductivity - Eutrophication - Reservoirs
(water) - River pollution - Stream flow - Thermal stratification - Water - Water quality
- Water resources
Uncontrolled terms:Algal blooms - Chlorophyll a - Conductivity distributions - Nutrients
concentrations - Three gorges reservoir - Water quality parameters - Water samples -
Yangtze River
Classification code:407.2 Waterways - 441.2 Reservoirs - 444 Water Resources - 445.2
Water Analysis - 453 Water Pollution - 701.1 Electricity: Basic Concepts and Phenomena
- 804.1 Organic Compounds
Numerical data indexing:Mass_Density 1.67e-03kg/m3, Mass_Density 1.79e-03kg/m3,
Mass_Density 1.87e-03kg/m3, Mass_Density 2.31e-03kg/m3, Mass_Density 2.92e-06kg/m3,
Mass_Density 5.40e-05kg/m3, Mass_Density 6.05e-05kg/m3, Mass_Density 7.50e-05kg/m3,
Mass_Density 7.80e-06kg/m3, Mass_Density 9.70e-05kg/m3, Percentage 1.50e+02%, Percentage
7.50e+01%
DOI:10.13227/j.hjkx.201610183
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 27>
Accession number:20173804179849
Title:Remedying Effects of a Combined Amendment for Paddy Soil Polluted with Cd for
Spring and Autumn Rice
Authors:Chen, Li-Wei (1); Yang, Wen-Tao (1); Gu, Jiao-Feng (1); Zhou, Hang (1); Gao, Zi-
Xiang (1); Liao, Bo-Han (1)
Author affiliation:(1) College of Environmental Science and Engineering, Central South
University of Forestry and Technology, Changsha; 410004, China
Corresponding author:Liao, Bo-Han(liaobh1020@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2546-2552
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:An in-situ paddy experiment was conducted to study the remedying effects of a
combined amendment(calcium carbonate+diatomite+ferric sulfate) on Cd bioavailability in
soil and Cd accumulation in rice for spring and autumn rice planted in a certain Cd
contaminated paddy soil in Beishan Town, Changsha, Hunan Province. The results showed
that: Application of the combined amendment significantly increased soil pH and CEC
values in both cultivated seasons, but decreased soil OM contents for the spring rice.
During the experiment, the contents of TCLP-extractable Cd and CaCl<inf>2</inf>-
extractable Cd in soil were reduced by 18.0%-33.0% and 5.4%-57.9%, respectively. The Cd
contents in brown rice, husk, leave and root for the spring rice decreased by 29.6%-
56.1%, 52.1%-54.0%, 18.1%-80.7% and 24.4%-41.6%, respectively, due to application of the
combined amendment. There were significant differences in Cd transport capacity between
spring rice and autumn rice, and the transportation of soil Cd in autumn rice was
smoother than that in spring rice. For the autumn rice, the effects of the combined
amendment were not significant(P>0.05), except that the Cd content in husk increased a
little after applying 2 g·kg<sup>-1</sup>of the combined amendment. Significant
positive correlations were found between the Cd contents in brown rice and the contents
of TCLP-extractable Cd or CaCl<inf>2</inf>-extractable Cd in soil. Application of the
combined amendment effectively inhibited Cd uptake by rice root and reduced Cd content in
brown rice for the spring rice; however, these remedying effects were significantly
weakened for the autumn rice due to loss of the combined amendment with the movement of
irrigation water in the spring season. Therefore, we suggest that supplement of the
combined amendment is necessary between two rice cultivated seasons. © 2017, Science
Press. All right reserved.
Number of references:27
Main heading:Soil pollution
Controlled terms:Biochemistry - Calcium carbonate - Irrigation - Remediation - Soils
Uncontrolled terms:Cd accumulation - Combined amendment - In-situ remediation -
Irrigation waters - Positive correlations - Rice - Translocation factor - Transport
capacity
Classification code:454.2 Environmental Impact and Protection - 483.1 Soils and Soil
Mechanics - 801.2 Biochemistry - 804 Chemical Products Generally - 821.3 Agricultural
Methods
Numerical data indexing:Percentage 1.80e+01% to 3.30e+01%, Percentage 2.44e+01% to 4.16e
+01%, Percentage 2.96e+01% to 5.61e+01%, Percentage 5.40e+00% to 5.79e+01%
DOI:10.13227/j.hjkx.201611112
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 28>
Accession number:20173804179842
Title:Applicability and Microbial Community Structure of Denitrification Suspended
Carriers
Authors:Tan, Yang (1, 2); Li, Ji (1, 3); Xu, Qiao (1, 4); Fu, Lei (5); You, Shi-Jie (2);
Wang, Shuo (1, 3)
Author affiliation:(1) Jiangsu Key Laboratory of Anaerobic Biotechnology, School of
Environment and Civil Engineering, Jiangnan University, Wuxi; 214122, China; (2) State
Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology,
Harbin; 150090, China; (3) Jiangsu College of Water Treatment Technology and Material
Collaborative Innovation Center, Suzhou; 215009, China; (4) Ningbo Municipal Drainage Co.
Ltd., Ningbo; 315000, China; (5) Dahua Group Co., Ltd., Dalian; 116031, China
Corresponding author:Wang, Shuo(shuowang@jiangnan.edu.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2486-2495
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to investigate the effects of temperature and organic loading on the
bioactivity reactivation of anoxic biofilm in suspended carriers, the experiment was
carried out under low organic loading, shock loading and low temperature conditions. The
experimental results showed that the increase of polysaccharide in extracellular
polymeric substance (EPS) was important during bioactivity reactivation process, and
polysaccharide content was higher than that of protein under shock loading and low
temperature conditions, and the contents of both polysaccharide and protein were much
higher under low organic loading condition. Anoxic biofilm achieved excellent
applicability in shock loading condition, moreover anoxic biofilm reactivated under low
organic loading had lowest denitrication capacity and anoxic biofilm recovered at low
temperature was in between. In addition, the relative abundance of Proteobacteria under
low organic loading, shock loading and low temperature conditions increased from 72.23%,
78.66% and 76.35% to 83.17%, 84.30% and 80.46% at the end of the reactivation process
(25th day), respectively. However, the relative abundance of Proteobacteria under low
organic loading was lower than those of other reactors, indicating that the anoxic
suspended carriers were less suitable for total nitrogen removal in wastewater treatment
plant. The increase in relative abundance of Dechloromonas was significant for enhancing
total nitrogen removal, and anoxic biofilm possessed comparatively rich biodiversity when
the denitrification capability was recovered. The presence of Flavobacterium could
promote the denitrification capacity of biofilm at low temperature. © 2017, Science
Press. All right reserved.
Number of references:35
Main heading:Loading
Controlled terms:Bioactivity - Biodiversity - Biofilms - Denitrification - Microorganisms
- Nitrogen - Nitrogen removal - Polymers - Proteins - Shock problems - Social sciences -
Temperature - Wastewater treatment
Uncontrolled terms:Denitrification capacity - Denitrification efficiencies - Extra-
cellular polymeric substances - Low temperature conditions - Microbial community
structures - Polysaccharide contents - Suspended carrier - Wastewater treatment plants
Classification code:452.4 Industrial Wastes Treatment and Disposal - 454 Environmental
Engineering - 461.6 Medicine and Pharmacology - 461.9 Biology - 462.5 Biomaterials
(including synthetics) - 641.1 Thermodynamics - 691.2 Materials Handling Methods -
802.2 Chemical Reactions - 804 Chemical Products Generally - 804.1 Organic Compounds -
815.1 Polymeric Materials - 971 Social Sciences
Numerical data indexing:Percentage 7.22e+01%, Percentage 7.63e+01% to 8.32e+01%,
Percentage 7.87e+01%, Percentage 8.05e+01%, Percentage 8.43e+01%
DOI:10.13227/j.hjkx.201610110
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 29>
Accession number:20173804179833
Title:Removal of Nitrogen in Municipal Secondary Effluent by a Vertical Flow Constructed
Wetland Associated with Iron-carbon Internal Electrolysis
Authors:Zheng, Xiao-Ying (1); Zhu, Xing (1); Zhou, Xiang (1); Xu, Ya-Dong (2); Wang, Ju
(2); Wei, Cheng (2); Gao, Ya-Jie (1); Zhou, Gan (1)
Author affiliation:(1) Key laboratory of Integrated Regulation and Resources Development
on Shallow Lakes, College of Environment, Hohai University, Nanjing; 210098, China; (2)
Water Resources Service Center of Jiangsu Province, Nanjing; 210029, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2412-2418
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Aiming at the problem of high concentration of total nitrogen (TN) and low
available carbon source for microorganisms in municipal secondary effluent, the vertical
flow constructed wetland associated with iron-carbon internal electrolysis (ICIE-VFCW)
was applied to investigate the removal efficiencies of pollutants in municipal secondary
effluent. Moreover, the mechanism for enhanced nitrogen removal was primarily discussed
by the applications of UV visible spectrum (UV-VIS) and gel filtration chromatography
(GFC). The results showed that the ICIE-VFCW could improve the COD removal efficiencies
and the effluent COD of less than 30 mg·L<sup>-1</sup>could be stably obtained.
The average COD removal efficiencies of the whole year, warm months, and cold months
could be increased by 10.16%, 9.81%, 11.22%, respectively, compared to the control group.
The effluent TN of the ICIE-VFCW could be maintained below 10 mg·L<sup>-1</sup>,
and the average TN removal efficiencies of the whole year, warm months and cold months
could be increased by 13.72%, 12.90%, 16.17%, respectively. Besides, compared to the
influent, the humification, aromaticity and average relative molecular weight
(M<inf>r</inf>) in the effluent obviously decreased, and the M<inf>r</inf>decreased more
significantly in the ICIE-VFCW. The ICIE-VFCW could promote the conversion of refractory
organics in municipal secondary effluent to the small and readily biodegradable
molecules, which could enhance the utilization of organic compounds by microorganisms,
thus improving the removal efficiency of nitrogen. © 2017, Science Press. All right
reserved.
Number of references:27
Main heading:Nitrogen removal
Controlled terms:Efficiency - Effluents - Electrolysis - Gel permeation chromatography -
Iron - Iron compounds - Microorganisms - Molecular weight - Nitrogen - Removal -
Wetlands
Uncontrolled terms:Biodegradable molecules - COD removal efficiency - Enhanced nitrogen
removal - Gel-filtration chromatography - Iron carbon - Municipal secondary effluents -
Removal efficiencies - Vertical flow constructed wetlands
Classification code:452.3 Industrial Wastes - 461.9 Biology - 545.1 Iron - 802.2
Chemical Reactions - 802.3 Chemical Operations - 804 Chemical Products Generally -
913.1 Production Engineering - 931.3 Atomic and Molecular Physics
Numerical data indexing:Mass_Density 1.00e-02kg/m3, Percentage 1.02e+01%, Percentage
1.12e+01%, Percentage 1.29e+01%, Percentage 1.37e+01%, Percentage 1.62e+01%, Percentage
9.81e+00%
DOI:10.13227/j.hjkx.201612073
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 30>
Accession number:20173804179820
Title:Emission Characteristics of Particulate Matter from Diesel Buses Meeting Different
China Emission Standards Fueled with Biodiesel
Authors:Lou, Di-Ming (1); Zhao, Cheng-Zhi (1); Xu, Ning (1); Tan, Pi-Qiang (1); Hu, Zhi-
Yuan (1)
Author affiliation:(1) School of Automotive Studies, Tongji University, Shanghai; 201804,
China
Corresponding author:Zhao, Cheng-Zhi(zhaochengzhi777@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2301-2307
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on heavy chassis dynamometer, an experimental study was conducted in
diesel buses compliant with China III, IV, V emissions standards respectively, fueled
with three different blends of petroleum diesel/biodiesel (0%, 5%and 10%, V/V biodiesel
blends), which investigated the characteristics of particulate matter (PM) emission under
CCBC driving cycle. Results of study showed that the total PM number and mass emission
from China V bus respectively decreased by 68.1%, 56.2%, 57.5% and 52.7%, 64.8%, 88.5%
compared to China III bus. When compared to China IV bus, the PM mass emission decreased
by 43.0%, 47.3% and 42.1%, while the number increased by 4.0%, 7.6% and 14.7%. The
nucleation mode PM emission of China III bus was mainly from high-speed driving
condition, while China IV and V buses were from middle-low speed. The accumulation mode
PM emissions of China III, IV and V buses were all mainly from middle-low speed driving
conditions. In relatively lower speed conditions, compared to China III bus, the
nucleation mode PM emissions of China IV and V buses obviously decreased, so was
accumulation mode PM. Compared to China IV bus, emission of China V bus did not improve
obviously and the nucleation mode PM emission even increased. In high-speed driving
condition, the nucleation mode PM emission from China III bus increased dramatically,
while those from China V and IV buses slightly increased. Meanwhile, the accumulation PM
number and mass emission of China IV bus was obviously higher than those of China V and
III buses. When fueled with B10, the relatively bigger sizes PM emission of China III bus
deteriorated rapidly, indicating that China III bus was not suitable for fuel with high
blending ratio of biodiesel. © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Particulate emissions
Controlled terms:Biodiesel - Blending - Buses - Dynamometers - Nucleation - Speed
Uncontrolled terms:Accumulation modes - Chassis dynamometers - Diesel bus - Driving cycle
- Emission characteristics - Emission standard - Particulate Matter - Particulate matter
emissions
Classification code:451.1 Air Pollution Sources - 523 Liquid Fuels - 663.1 Heavy Duty
Motor Vehicles - 802.3 Chemical Operations - 933.1.2 Crystal Growth - 943.1 Mechanical
Instruments
Numerical data indexing:Percentage 0.00e+00%, Percentage 1.00e+01%, Percentage 1.47e+01%,
Percentage 4.00e+00%, Percentage 4.21e+01%, Percentage 4.30e+01%, Percentage 4.73e+01%,
Percentage 5.27e+01%, Percentage 5.62e+01%, Percentage 5.75e+01%, Percentage 6.48e+01%,
Percentage 6.81e+01%, Percentage 7.60e+00%, Percentage 8.85e+01%
DOI:10.13227/j.hjkx.201612035
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 31>
Accession number:20173804179841
Title:Isolation, Identification and Characterization of the Filamentous Microorganisms
from Bulking Sludge
Authors:Zhang, Chong-Miao (1); Niu, Quan-Rui (1); Xu, Li-Mei (1); Wang, Long-Mei (1);
Wang, Dai (1); Wu, Shao-Hua (2)
Author affiliation:(1) International Science and Technology Cooperation Center for Urban
Alternative Water Resources Development, School of Environmental and Municipal
Engineering, Xi'an University of Architecture and Technology, Xi'an; 710055, China; (2)
Xi'an Water Group Company Limited, Xi'an; 710061, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2477-2485
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To illustrate the species and characteristics of filamentous microorganisms in
bulking sludge, culture method, microscopic examination and molecular biological analysis
were conducted to isolate and identify the filamentous microorganisms existing in bulking
sludge collected from municipal wastewater treatment plant. Filamentous microorganisms
isolated by Gause's synthetic agar medium and starch agar fell into 18 genera, among
which Streptomyces and Microbacterium belong to bacterial phylum Actinobacteria, all
other isolates were classified into fungi. Penicillium, Cladosporium, Alternaria,
Aspergillus and Trichosporon were the fungi with high occurrence frequency in culture
medium. Trichosporon, Streptomyces, Penicillium and Alternaria could grow well at neutral
pH or meta-acid condition. High concentration of NaCl could inhibit the growth of
Trichosporon and Streptomyces, but had no obvious inhibitory effect on Penicillium and
Alternaria. Except of Trichosporon, Streptomyces, Penicillium and Alternaria all could
utilize saccharose, starch and cellulose. The increase of carbon source concentration
could promote their growth. The results of high throughput sequencing of rDNA-ITS showed
that a large number of unidentified fungi existed in bulking sludge. © 2017, Science
Press. All right reserved.
Number of references:31
Main heading:Microorganisms
Controlled terms:Algae - Bacteria - Biological water treatment - Carbon - Fungi -
Polysaccharides - Starch - Throughput - Wastewater treatment
Uncontrolled terms:Biological analysis - Bulking sludge - Filamentous microorganisms -
High-throughput sequencing - Inhibitory effect - Isolation - Municipal wastewater
treatment plants - Synthetic agar mediums
Classification code:445.1 Water Treatment Techniques - 452.4 Industrial Wastes
Treatment and Disposal - 461.9 Biology - 804 Chemical Products Generally - 804.1
Organic Compounds
DOI:10.13227/j.hjkx.201610094
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 32>
Accession number:20173804179588
Title:Volatile Organic Compounds(VOCs) Source Profiles of Industrial Processing and
Solvent Use Emissions: A Review
Authors:Wang, Hong-Li (1); Yang, Zhao-Xun (1, 2); Jing, Sheng-Ao (1)
Author affiliation:(1) State Environmental Protection Key Laboratory of Formation and
Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental Sciences,
Shanghai; 200233, China; (2) Shanghai Key Laboratory of Atmospheric Particle Pollution
and Prevention, Department of Environmental Science & Engineering, Fudan University,
Shanghai; 200433, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2617-2628
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Industrial processing and solvent use are two most important industrial sources
of volatile organic compounds (VOCs) in China, and the source profile study has attracted
increasing attention recently. Studies of VOCs source profiles from industrial processing
and solvent use since the year of 2000 were summarized in this study, focusing on the
comparison among different studies and the potential impact of different research
methods. In general, studies were very limited and focused on few sources. Specifically,
only 8 of 32 sub-categories of the industrial processing (according to the source
classification method of the National Guidelines for VOCs Inventories Preparation) have
been reported, and in terms of the solvent use sources, 4 of 10 sub-categories have been
reported. There were large differences among the VOCs patterns of different sub
categories emissions of industrial processing or solvent use. In terms of studies of the
similar emissions, significant differences of VOCs profiles were resulted from the
different research methods, such as the different sampling methods and VOCs analysis
techniques. In addition, the non-uniformity of VOC species in the source profile caused
difficulty for the comparison of different research results. Oxygen-containing VOCs were
important components of the above two types of pollution sources and needed to be
included in the measurement. An opening and interactive database of VOCs from industrial
processing and solvent use is critically essential in the future, and mechanisms of
sharing and inputting relative research results should be formed to encourage researchers
to join the database establishment. Correspondingly, detailed quality assurance and
quality control procedures are also very important, which include the detailed
information such as research objectives, sampling and analysis methods, research region
and time, and test times, et al. Based on the community above, a better uncertainty
analysis could be carried out for the VOCs emissions profiles, which is critically
important to understand the VOCs emission characteristics of the industrial processing
and solvent use. © 2017, Science Press. All right reserved.
Number of references:40
Main heading:Industrial emissions
Controlled terms:Gas chromatography - Importance sampling - Industrial research - Organic
compounds - Quality assurance - Quality control - Solvents - Uncertainty analysis -
Volatile organic compounds
Uncontrolled terms:Analysis techniques - Control procedures - Emission characteristics -
Industrial processing - Interactive database - Research objectives - Source
classification - Source profiles
Classification code:451.1 Air Pollution Sources - 802.3 Chemical Operations - 803
Chemical Agents and Basic Industrial Chemicals - 804.1 Organic Compounds - 901.3
Engineering Research - 913.3 Quality Assurance and Control - 922 Statistical Methods -
922.1 Probability Theory
DOI:10.13227/j.hjkx.201611119
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 33>
Accession number:20173804179850
Title:Effects of Two Amendments on Remedying Garden Soil Complexly Contaminated with Pb,
Cd and As
Authors:Tian, Tao (1); Lei, Ming (1); Zhou, Hang (1); Yang, Wen-Tao (1); Liao, Bo-Han
(1); Hu, Li-Qiong (1); Zeng, Min (1)
Author affiliation:(1) College of Environmental Science and Engineering, Central South
University of Forestry and Technology, Changsha; 410004, China
Corresponding author:Liao, Bo-Han(liaobh1020@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2553-2560
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This paper studied the effects of two amendments (iron sulfate [Fe<inf>2</inf>
(SO<inf>4</inf>)<inf>3</inf>] and calcium carbonate [CaCO<inf>3</inf>]) on the
bioavailability of Pb, Cd and As in a garden soil and on the migration and accumulation
of Pb, Cd and As in pepper through an in-situ experiment planting pepper plants. The
results indicated that: ① Addition of these amendments significantly decreased TCLP
extractable contents of Pb and Cd in soil, and increased TCLP extractable contents of As.
②Compared with the control group, addition of Fe<inf>2</inf>(SO<inf>4</inf>)
<inf>3</inf>led to reduction in contents of Pb and Cd in pepper fruits by 7.2%-22.9% and
2.3%-2.9%, respectively, but no obvious changes were observed for As contents in pepper
fruits. Meanwhile, addition of CaCO<inf>3</inf>decreased the contents of Pb, Cd and As in
pepper fruits by 15.8%-16.3%, 11.8%-15.0%, and 0.03%-53.2%, respectively. ③The
maximum reductions for the translocation factors of Pb, Cd and As from stem to fruits in
pepper plants were 16.7%, 68.0%, 10.2%, respectively, due to Fe<inf>2</inf>
(SO<inf>4</inf>)<inf>3</inf>application and 16.7%, 51.5%, 45.6%, respectively, due to
CaCO<inf>3</inf>application, compared with the control group. It was obvious that
Fe<inf>2</inf>(SO<inf>4</inf>)<inf>3</inf>and CaCO<inf>3</inf>could both effectively
decrease the migration of soil Pb, Cd and As to pepper plants, but the effects of
CaCO<inf>3</inf>were better than those of Fe<inf>2</inf>(SO<inf>4</inf>)<inf>3</inf>.
© 2017, Science Press. All right reserved.
Number of references:36
Main heading:Soil pollution
Controlled terms:Biochemistry - Calcium carbonate - Fruits - Soils
Uncontrolled terms:Amendment - Control groups - Garden soils - In-situ experiments - Iron
sulfates - Migration and accumulation - Pepper - Translocation factor
Classification code:483.1 Soils and Soil Mechanics - 801.2 Biochemistry - 804 Chemical
Products Generally - 821.4 Agricultural Products
Numerical data indexing:Percentage 1.02e+01%, Percentage 1.58e+01% to 1.63e+01%,
Percentage 1.67e+01%, Percentage 2.30e+00% to 2.90e+00%, Percentage 3.00e-02% to 5.32e
+01%, Percentage 4.56e+01%, Percentage 5.15e+01%, Percentage 6.80e+01%, Percentage 7.20e
+00% to 2.29e+01%
DOI:10.13227/j.hjkx.201611179
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 34>
Accession number:20173804179821
Title:Spatial Variation and Environmental Significance of δ<sup>18</sup>O and
δD Isotope Composition in Xijiang River
Authors:Xu, Qi (1, 2); Li, Jian-Hong (2); Sun, Ping-An (2); He, Shi-Yi (2); Yu, Shi (2)
Author affiliation:(1) National Engineering Research Center for Geographic Information
System, Wuhan; 430074, China; (2) Key Laboratory of Karst Dynamics, Institute of Karst
Geology, Chinese Academy of Geological Sciences, Guilin; 541004, China
Corresponding author:Yu, Shi(yushi@karst.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2308-2316
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The H and O isotope composition of the Xijiang water was investigated on 54
samples collected from the mainstreams and main tributaries in June 2014 and January
2015.It was found that in the Xijiang river, there was a remarkable linear relationship
between δ<sup>18</sup>O and δD. This relationship was more significant in the
dry season. In both seasons, the<sup>18</sup>O and D values distributed along the
meteoric water line, which indicated that precipitation was the source of the Xijiang
River. Due to the direct water recharge through karst forms (i.e. sinkholes, vertical
shaft and funnel) to the underground river, the d-excess value was higher in the rainy
season. While during the dry season, water recharge came from the storage in fissures and
pores. Affected by altitude and evaporation effect, along the mainstream Hongshui River-
Xunjiang and tributary Youjiang-Yujiang reach, the δ<sup>18</sup>O and δD
values were gradually approaching positive value in general. However, along the short
tributary Guijiang reach, the altitude difference was not dramatic, and the discharge was
less, the same phenomenon was not observed. By establishing a linear regression model
between δ<sup>18</sup>O and altitude, it revealed that the change rate of Xijiang
water with altitude was -0.44‰·(100 m)<sup>-1</sup>in the rainy season, and
-0.45‰·(100 m)<sup>-1</sup>in the dry season. The result reflected the
height effect of the precipitation, which has a considerable meaning for the study of
hydrological cycle in a river basin. © 2017, Science Press. All right reserved.
Number of references:37
Main heading:Water resources
Controlled terms:Drought - Isotopes - Linear regression - Regression analysis - Rivers
Uncontrolled terms:Elevation effect - Environmental significance - Linear regression
models - Linear relationships - Meteoric water lines - Stable isotopes - Water cycle -
Xijiang basin
Classification code:444 Water Resources - 922.2 Mathematical Statistics
Numerical data indexing:Size 1.00e+02m
DOI:10.13227/j.hjkx.201607136
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 35>
Accession number:20173804179845
Title:Source Apportionment of Soil Heavy Metals in City Residential Areas Based on the
Receptor Model and Geostatistics
Authors:Chen, Xiu-Duan (1); Lu, Xin-Wei (2)
Author affiliation:(1) Department of Environment and Resource Management, Shaanxi Xueqian
Normal University, Xi'an; 710061, China; (2) School of Tourism and Environment, Shaanxi
Normal University, Xi'an; 710062, China
Corresponding author:Lu, Xin-Wei(luxinwei@snnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2513-2521
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The soils from residential areas of Xi'an city were selected as a case area. The
absolute principal component scores-multivariate linear regression (APCS-MLR) model and
the ordinary kriging interpolation were combined to identify and apportion the pollution
sources of soil heavy metals (As, Ba, Co, Cu, Mn, Ni, Pb, Sr, Zn, V), the percentage of
contribution of every source for every element, and the spatial distribution
characteristics of contribution rates. Compared with the background values of cinnamon,
which is the main soil type in Xi 'an, the accumulation levels of Pb, Cu, Sr, Co, Zn, Ba,
Ni, As, Mn, V in soil of urban residential areas in Xi'an city decreased in turn. The
standard-exceeding ratios of Ba, Co, Cu, Pb, Sr, Zn were higher than those of other
studied elements. Three main pollution sources of soil heavy metals in residential areas
were natural source, traffic sources, and fossil fuel combustion source, respectively.
Natural source was the main source of As, Mn, Ni, V in studied residential areas. The
average contribution rate of natural source for As, Mn, Ni, V was 69.63%, 74.28%, 68.65%,
77.09%, respectively. The fossil fuel combustion was the second largest contributor for
their accumulation in these studied residential areas. Its contribution rate for As, Mn,
Ni was 23.07%, 19.09%, 23.13%, respectively. The contribution of traffic emissions was
lower. Their spatial distribution characteristics tended to be lower in west and higher
in east. The average contribution rates of fossil fuel combustion source for Co, Pb, Sr,
Zn were 59.84%, 42.22%, 44.50%, 44.44%, respectively. The performance of spatial
distribution was increased gradually from the city center to the outside. The sources of
Ba were given priority to natural source and fossil fuel combustion source, and the
average contribution rates were 41.67% and 48.27%, respectively. The contribution rate of
fossil fuel combustion source for Ba gradually decreased from the center of the city. The
contribution rates of natural source, traffic source, and fossil fuel combustion source
for Cu were 37.00%, 20.47% and 26.50%, respectively. © 2017, Science Press. All
right reserved.
Number of references:25
Main heading:Copper
Controlled terms:Barium - Combustion - Fossil fuels - Fuels - Heavy metals - Housing -
Interpolation - Lead - Manganese - Nickel - Pollution - Principal component analysis -
Soil pollution - Soils - Spatial distribution - Strontium - Supply chains - Zinc
Uncontrolled terms:APCS/MLR - Distribution characteristics - Fossil fuel combustion -
Multivariate linear regressions - Principal Components - Residential areas - Source
apportionment - Urban residential areas
Classification code:403.1 Urban Planning and Development - 483.1 Soils and Soil
Mechanics - 531 Metallurgy and Metallography - 543.2 Manganese and Alloys - 544.1
Copper - 546.1 Lead and Alloys - 546.3 Zinc and Alloys - 548.1 Nickel - 549.2
Alkaline Earth Metals - 912 Industrial Engineering and Management - 913 Production
Planning and Control; Manufacturing - 921 Mathematics - 921.6 Numerical Methods - 922.2
Mathematical Statistics
Numerical data indexing:Percentage 1.91e+01%, Percentage 2.05e+01%, Percentage 2.31e+01%,
Percentage 2.65e+01%, Percentage 3.70e+01%, Percentage 4.17e+01%, Percentage 4.22e+01%,
Percentage 4.44e+01%, Percentage 4.45e+01%, Percentage 4.83e+01%, Percentage 5.98e+01%,
Percentage 6.87e+01%, Percentage 6.96e+01%, Percentage 7.43e+01%, Percentage 7.71e+01%
DOI:10.13227/j.hjkx.201611208
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 36>
Accession number:20173804179855
Title:Exposure Route of Dioxin-like Polychlorinated Biphenyls in Hair Based on Passive
Sampling
Authors:Yuan, Hao-Dong (1); Bai, Yao (1); Li, Qiu-Xu (1); Wang, Ying (1); Jin, Jun (1, 2)
Author affiliation:(1) College of Life and Environmental Sciences, Minzu University of
China, Beijing; 100081, China; (2) Engineering Research Center of Food Environment and
Public Health, Beijing; 100081, China
Corresponding author:Jin, Jun(junjin3799@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2594-2599
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The main exposure pathways of DL-PCBs in local population were studied by
analyzing the levels, distributions and relationships of DL-PCBs in pooled tree bark
samples and hair samples collected in Kaiyuan, Yunnan Province, China. The results
indicated that the concentrations of DL-PCBs in bark and hair samples were 4.0
pg·g<sup>-1</sup>to 88.9 pg·g<sup>-1</sup>and 4.1 pg·g<sup>-
1</sup>to 19.3 pg·g<sup>-1</sup>, respectively, suggesting the pollution levels of
DL-PCBs were relatively low in local environment and human body. The predominant PCB
congeners in bark and hair was PCB-118, contributing 48% of the total DL-PCB
concentrations in the bark samples and 61% of the total DL-PCB concentrations in the hair
samples. The DL-PCB congeners in tree bark might had the same sources and these compounds
might be derived from atmospheric long-range transport. External and internal exposures
were responsible for the DL-PCBs concentrations in hair, and external exposure
contributed more to low chlorinated PCBs than to high chlorinated PCBs. © 2017,
Science Press. All right reserved.
Number of references:31
Main heading:Organic pollutants
Controlled terms:Atmospheric movements - Forestry - Polychlorinated biphenyls
Uncontrolled terms:Dl-PCBs - Exposure pathways - Hair - POPs - Tree barks
Classification code:443.1 Atmospheric Properties - 804.1 Organic Compounds
Numerical data indexing:Percentage 4.80e+01%, Percentage 6.10e+01%
DOI:10.13227/j.hjkx.201611077
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 37>
Accession number:20173804179853
Title:Effects of Topography, Tree Species and Soil Properties on Soil Enzyme Activity in
Karst Regions
Authors:Luo, Pan (1, 2, 3); Chen, Hao (1, 2); Xiao, Kong-Cao (1, 2); Yang, Li-Qiong (1,
2, 3); Wen, Li (1, 2, 3); Li, De-Jun (1, 2)
Author affiliation:(1) Key Laboratory of Subtropical Agriculture Ecology, Institute of
Subtropical Agriculture, Chinese Academy of Sciences, Changsha; 410125, China; (2)
Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of
Sciences, Huanjiang; 547100, China; (3) University of Chinese Academy of Sciences,
Beijing; 100049, China
Corresponding author:Li, De-Jun(dejunli@isa.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2577-2585
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Soil extracellular enzymes are crucial in biogeochemical cycle and ecosystem
functioning. Yet uncertainty exists in terms of major determinants on soil extracellular
enzyme activity (EEA), especially at calcareous areas. In this study, soil samples (0-15
cm) were collected from different topographic conditions (different slope positions and
aspects) and different tree species (Cryptocarya concinna and Eurycorymbus cavaleriei) in
a forest located at Mulun natural reserve, a typical karst area. Six hydrolytic enzymes,
related to carbon, nitrogen or phosphorus cycling, and soil physiochemical properties
were investigated. The effects of topography, tree species and soil properties on soil
enzyme activities were analyzed by multi-response permutation procedures (MRPP),
redundancy analysis (RDA) and variation partitioning. The enzyme profiles were
significantly (P<0.05) separated among the four slope positions but not significantly
separated between the two aspects or two tree species according to multi-response
permutation procedure (MRPP) analysis. Variation partitioning indicated that topography,
tree species and soil properties together explained 55.3% of EEA variation. Soil property
was the key factor influencing EEA variation, which explained 44.2% of EEA variation. The
result of redundancy analysis (RDA) showed that soil pH, total nitrogen and inorganic
nitrogen were the most important variables among the nine soil properties for EEA
variation. This study first quantified the effects of small-scale topographic, tree
species, and soil properties on soil enzyme activity variation in karst areas. Our
results suggest that EEA variation can be well explained by soil properties at a small
scale in the karst area. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Enzyme activity
Controlled terms:Biogeochemistry - Carbon - Ecology - Enzymes - Forestry - Landforms -
Nitrogen - Redundancy - Soil testing - Soils - Topography
Uncontrolled terms:Extracellular enzyme activity - Karst - Permutation procedures -
Physio-chemical properties - Redundancy analysis (RDA) - Soil property - Topographic
conditions - Tree species
Classification code:454.3 Ecology and Ecosystems - 461.9 Biology - 481.1 Geology -
481.2 Geochemistry - 483.1 Soils and Soil Mechanics - 804 Chemical Products Generally
- 951 Materials Science
Numerical data indexing:Percentage 4.42e+01%, Percentage 5.53e+01%, Size 0.00e+00m to
1.50e-01m
DOI:10.13227/j.hjkx.201611078
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 38>
Accession number:20173804179807
Title:Comparison of Models on Spatial Variation of PM<inf>2.5</inf>Concentration: A Case
of Beijing-Tianjin-Hebei Region
Authors:Wu, Jian-Sheng (1, 2); Wang, Xi (1); Li, Jia-Cheng (3); Tu, Yuan-Jie (1)
Author affiliation:(1) Key Laboratory for Urban Habitat Environmental Science and
Technology, School of Urban Planning and Design, Peking University, Shenzhen; 518055,
China; (2) Laboratory of Earth Surface Processes of Ministry of Education, College of
Urban and Environment Science, Peking University, Beijing; 100871, China; (3) Department
of Urban Development and Land Policy, Urban Planning and Design Institute of Shenzhen,
Shenzhen; 518055, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2191-2201
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Due to the rapid urbanization and increasing energy consumption, air pollution,
especially some fine particulates like PM<inf>2.5</inf>rise in the context of fast
urbanization. PM<inf>2.5</inf>pollution has been given considerable attention recent
years. High PM<inf>2.5</inf>concentration is the main reason for the atmospheric haze in
Beijing-Tianjin-Hebei region. Air pollution has become the key issue restricting the
sustainable development of Beijing-Tianjin-Hebei region and even the whole country.
Long-term exposure to PM<inf>2.5</inf>is likely to cause adverse effects on human health.
The spatial-temporal variation of air pollution can be characterized by the land use
regression model. It is significant to have a good knowledge of spatial characteristics
of PM<inf>2.5</inf>concentration, which could assist air pollution management and the
epidemiological research. This manuscript used air quality data of 104 monitoring sites
of Beijing-Tianjin-Hebei region from 1st January 2014 to 31st December, 2014, combined
with VIIRS (visible infrared imaging radiometer) AOD(aerosol optical depth), land use,
meteorological factors, road network, population, and pollutant sources distribution to
establish the land use regression model by least square method and geographically
weighted method respectively. The four models established were least square land use
regression model with VIIRS AOD data, geographically weighted land use regression model
with VIIRS AOD data, least square land use regression model without VIIRS AOD data and
geographically weighted land use regression model without VIIRS AOD data. And the
adjusted R<sup>2</sup>values for these four models were 82.13%, 84.87%, 80.45% and
81.99%, respectively. Research results demonstrated that the geographically weighted
method performed better than the least square method and improved the land use regression
model to a certain extent. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Land use
Controlled terms:Air pollution - Air quality - Atmospheric aerosols - Energy utilization
- Infrared imaging - Least squares approximations - Motor transportation - Pollution -
Population statistics - Regression analysis - Thermography (imaging)
Uncontrolled terms:Beijing-tianjin-hebei regions - Geographical weighted regressions -
Infrared imaging radiometers - Land use regression - Land-use regression models - PM2.5 -
Spatial characteristics - Spatial variations
Classification code:403 Urban and Regional Planning and Development - 443.1 Atmospheric
Properties - 451 Air Pollution - 451.2 Air Pollution Control - 525.3 Energy
Utilization - 742.1 Photography - 746 Imaging Techniques - 921.6 Numerical Methods -
922.2 Mathematical Statistics
Numerical data indexing:Percentage 8.05e+01%, Percentage 8.20e+01%, Percentage 8.21e+01%,
Percentage 8.49e+01%
DOI:10.13227/j.hjkx.201611114
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 39>
Accession number:20173804179813
Title:Effect of VOCs on O<inf>3</inf>and SOA Formation Potential During the Combined
Pollution Process in Guangzhou Panyu Atmospheric Composition Station
Authors:Zou, Yu (1); Deng, Xue-Jiao (1); Li, Fei (1); Yin, Chang-Qin (1)
Author affiliation:(1) Guangdong Provincial Key Laboratory of Regional Numerical Weather
Prediction, Institute of Tropical and Marine Meteorology, China Meteorological
Administration, Guangzhou; 510080, China
Corresponding author:Deng, Xue-Jiao(dxj@grmc.gov.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2246-2255
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:An analysis was made by using historical observational data of Guangzhou Panyu
Atmospheric Composition Station(GPACS). The results showed that typical haze processes
accompanied with high ozone episodes happened during the period from September 2rd, 2011
to September 5th, 2011(P<inf>1</inf>) and the period from June 12th, 2012 to June 15th,
2012(P<inf>2</inf>) respectively. During the two combined pollution processes
(P<inf>1</inf>and P<inf>2</inf>), daily visibility ranged from 5.78 km to 6.91 km and
from 5.60 km to 9.25 km, and the maximum 8 h O<inf>3</inf>reached 92.14×10<sup>-
9</sup>and 91.29×10<sup>-9</sup>respectively. Among the 55 detected volatile
organic compounds(VOCs), alkenes and aromatics had the highest reactivity with the 41%,
39% proportions of equivalent propylene concentration and the proportions of 28%, 54% in
the aspect of ozone formation potential during P<inf>1</inf>. Alkenes and aromatics
contributed 35% and 46% of equivalent propylene concentration, as well as 22% and 61% to
ozone formation potential during P<inf>2</inf>. In terms of SOA formation potential by
FAC estimation, alkanes, alkenes and aromatics accounted for 13.2%, 21.4%, 65.4% during
P<inf>1</inf>and 4.6%, 13.8%, 81.6% during P<inf>2</inf>respectively. Toluene, isoprene,
ethylbenzene and m, p-Xylene had large contributions to the ozone and SOA formation.
Factors including pollutants transported from the downtown area, continuous gentle wind,
high temperature, low humidity and strong radiation gave rise to the occurrence of high
ozone episodes in these two haze processes. © 2017, Science Press. All right
reserved.
Number of references:32
Main heading:Air pollution
Controlled terms:Aromatization - Atmospheric composition - Atmospheric humidity -
Hydrocarbons - Ozone - Pollution - Propylene - Volatile organic compounds
Uncontrolled terms:Combined pollutions - Formation potential - Guangzhou - High
temperature - Observational data - Ozone episodes - Ozone formation potentials -
Secondary organic aerosols
Classification code:443.1 Atmospheric Properties - 451 Air Pollution - 802.2 Chemical
Reactions - 804 Chemical Products Generally - 804.1 Organic Compounds
Numerical data indexing:Percentage 1.32e+01%, Percentage 1.38e+01%, Percentage 2.14e+01%,
Percentage 2.20e+01%, Percentage 2.80e+01%, Percentage 3.50e+01%, Percentage 3.90e+01%,
Percentage 4.10e+01%, Percentage 4.60e+00%, Percentage 4.60e+01%, Percentage 5.40e+01%,
Percentage 6.54e+01%, Percentage 8.16e+01%, Size 5.60e+03m to 9.25e+03m, Size 5.78e+03m
to 6.91e+03m
DOI:10.13227/j.hjkx.201605164
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 40>
Accession number:20173804179843
Title:Effect of Thiosulfate on the Carbon Fixation Capability of Thiobacillus thioparus
and Its Mechanism
Authors:Li, Huan (1); Wang, Lei (1); Wang, Ya-Nan (1)
Author affiliation:(1) State Key Laboratory of Pollution Control and Resource Reuse,
College of Environmental Science and Engineering, Tongji University, Shanghai; 200092,
China
Corresponding author:Wang, Lei(celwang@tongji.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2496-2501
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The effect of Na<inf>2</inf>S<inf>2</inf>O<inf>3</inf>·5H<inf>2</inf>O on
the carbon fixation capability of Thiobacillus thioparus(DSM 505) was determined by
measuring the total organic carbon (TOC) concentrations under different concentrations of
Na<inf>2</inf>S<inf>2</inf>O<inf>3</inf>·5H<inf>2</inf>O. In addition, the
mechanism was clarified by analyzing the transcription characteristics of RubisCO-
encoding genes (cbb genes) and the concentrations of extracellular free organic carbon
(EFOC) under different concentrations of
Na<inf>2</inf>S<inf>2</inf>O<inf>3</inf>·5H<inf>2</inf>O. The result showed that
by increasing the concentrations of
Na<inf>2</inf>S<inf>2</inf>O<inf>3</inf>·5H<inf>2</inf>O appropriately, the carbon
fixation capability of Thiobacillus thioparus could be promoted and the ratio of
extracellular free organic carbon to total organic carbon fell significantly. Moreover,
the analysis from the transcription characteristics of cbb genes revealed that
Na<inf>2</inf>S<inf>2</inf>O<inf>3</inf>·5H<inf>2</inf>O had no significant effect
on the transcription efficiency and transcription pattern of cbb genes. So
Na<inf>2</inf>S<inf>2</inf>O<inf>3</inf>·5H<inf>2</inf>O might improve the carbon
fixation capability by promoting the cytoskeleton synthesis rate as electron donors to
eliminate the inhibition effect of extracellular free organic carbon on the carbon
fixation of Thiobacillus thioparus. © 2017, Science Press. All right reserved.
Number of references:23
Main heading:Organic carbon
Controlled terms:Carbon - Corrosion - Genes - Transcription
Uncontrolled terms:Carbon fixation - CO2 assimilation - Electron donors - Inhibition
effect - RuBisCo - Synthesis rate - Thiobacillus thioparus - Total Organic Carbon
Classification code:461.2 Biological Materials and Tissue Engineering - 461.9 Biology -
804 Chemical Products Generally - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201610043
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 41>
Accession number:20173804179811
Title:Fugitive Dust Emission Characteristics from Building Construction Sites of Beijing
Authors:Xue, Yi-Feng (1); Zhou, Zhen (1); Huang, Yu-Hu (1); Wang, Kun (2); Nie, Teng (1);
Nie, Lei (1); Qin, Jian-Ping (1)
Author affiliation:(1) National Engineering Research Center of Urban Environmental
Pollution Control, Beijing Municipal Research Institute of Environmental Protection,
Beijing; 100037, China; (2) Beijing Municipal Institute of Labour Protection, Beijing;
100054, China
Corresponding author:Huang, Yu-Hu(huangyuhu@sina.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2231-2237
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Particulate matter (PM) is the primary air pollutant in Beijing, and its
emission control is an important direction of air pollution prevention and control.
Construction dust plays a significant role in the source of airborne particulate matter
in Beijing. Due to population growth and economic development, the demand for residential
and office space has been increasing which results in a high construction area in Beijing
and dust pollution caused by construction activities. However, there are few studies
focusing on fugitive dust emissions from construction sites and their contribution to air
pollution in Beijing. Under this background, this paper established an estimation model
of dust emission from construction sites, and used the localized emission factor to
calculate the dust emission from 2000 to 2015 in Beijing, identified the emission
characteristics and laws of construction dust emission and quantified the uncertainty
range of the emissions. The WRF/CMAQ model system was used to simulate the contribution
of dust pollution to quantify its influence on air quality. The results showed that the
dust emission from construction sites in Beijing has been increasing, but the
construction area is falling in recent years. However, the emission of PM is still high
and needs to be paid enough attention. In the spatial distribution, the dust emissions in
summer and autumn are larger than those in other seasons. As for spatial distribution,
the construction dust is mainly concentrated in the urban function extension area and
suburban area, which is related to the extension of population activities and the gradual
development of urbanization. The contribution of construction dust to PM<inf>10</inf>and
PM<inf>2.5</inf>concentration in the ambient air can reach 31.3 μg·m<sup>-
3</sup>and 9.6 μg·m<sup>-3</sup>, respectively. Through scenarios analysis, for
further reduction of the emission from construction sites in 2030, more stricter standard
for green construction and powerful supervision are needed. © 2017, Science Press.
All right reserved.
Number of references:27
Main heading:Air pollution
Controlled terms:Air pollution control - Air quality - Construction industry - Dust -
Dust control - Emission control - Office buildings - Particles (particulate matter) -
Particulate emissions - Pollution - Pollution control - Population statistics - Spatial
distribution
Uncontrolled terms:Air pollution prevention - Airborne particulate matters - Building
construction sites - Construction sites - Emission characteristics - Emission factors -
Emission inventories - Particulate
Classification code:402.2 Public Buildings - 405 Construction Equipment and Methods;
Surveying - 451 Air Pollution - 921 Mathematics - 951 Materials Science
DOI:10.13227/j.hjkx.201612071
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 42>
Accession number:20173804179844
Title:Characteristics of Fungi Community Structure and Genetic Diversity of Forests in
Guandi Mountains
Authors:Qiao, Sha-Sha (1); Zhou, Yong-Na (1); Chai, Bao-Feng (1); Jia, Tong (1); Li, Cui
(2)
Author affiliation:(1) Institute of Loess Plateau, Shanxi University, Taiyuan; 030006,
China; (2) Department of Environment and Economics, Shanxi University of Finance and
Economics, Taiyuan; 030006, China
Corresponding author:Li, Cui(aihl@sxu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2502-2512
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Soil microorganisms drive the biogeochemical process of carbon, nitrogen,
phosphorus and sulfur, and play a key role in maintaining soil carbon sink and ecosystem
function. The study on effects of environmental and spatial factors on the structure of
microbial community in boreal coniferous forest soil will provide theoretical basis for
making management measures in local forest ecosystem. Our research analyzed five soil
fungi communities (LpMC1, LpMC2, PwMC, PtMC, and BMC) in four forest types, including
Larix principis-rupprechtii forest, Picea wilsonii forest, Pinus tabulaeformis forest and
Betula spp. forest, respectively, in Pangquangou Nature Reserve in Guandi Mountains with
Illumina high-throughput sequencing technology. Meanwhile, soil environmental factors and
diversity of undergrowth plants were determined to analyze the relationship between fungi
community structure and vegetation as well as soil environmental factors. The results
showed that: (1)There were seven eumycota and thirty-three advantageous fungal genera in
the five sample sites; (2) Redundancy analysis results showed that soil pH, temperature,
moisture, total nitrogen, the content of NH<inf>4</inf><sup>+</sup>, total carbon,
invertase activity, urease activity, undergrowth dominance and evenness were
significantly associated with soil fungi community structure; (3) Cluster analysis and
principal component analysis showed that forest vegetation type, soil environmental
factors and undergrowth had significant effects on soil fungi community structure; (4)
The results of PCNM analysis showed that at a local scale, dispersal limitation had no
significant influence on fungi community structure in the study area. The forest soil
fungi community structure in the study area was significantly affected by environmental
selection (soil pH, temperature, moisture, total nitrogen, the content of
NH<inf>4</inf><sup>+</sup>, total carbon, invertase activity, urease activity,
undergrowth dominance and evenness, forest type). © 2017, Science Press. All right
reserved.
Number of references:46
Main heading:Forestry
Controlled terms:Cluster analysis - Ecology - Ecosystems - Fungi - Landforms -
Microorganisms - Moisture - Nitrogen - Principal component analysis - Social sciences -
Soils - Throughput - Vegetation
Uncontrolled terms:Biogeochemical process - Boreal coniferous forests - Community
structures - Coniferous forest soils - Guandi Mountains - High-throughput sequencing -
Microbial communities - Pinus tabulaeformis forest
Classification code:454.3 Ecology and Ecosystems - 461.9 Biology - 481.1 Geology -
483.1 Soils and Soil Mechanics - 723 Computer Software, Data Handling and Applications
- 804 Chemical Products Generally - 922.2 Mathematical Statistics - 971 Social
Sciences
DOI:10.13227/j.hjkx.201611101
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 43>
Accession number:20173804179846
Title:Environmental Health Risk Assessment of Contaminated Soil Based on Monte Carlo
Method: A Case of PAHs
Authors:Tong, Rui-Peng (1); Yang, Xiao-Yi (1)
Author affiliation:(1) School of Resources & Safety Engineering, China University of
Mining & Technology (Beijing), Beijing; 100083, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2522-2529
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to obtain more reasonable health risk values and get the most
significant factors, probabilistic risk models based on Monte Carlo simulation were
applied, the health risk level of 16 PAHs in soil was evaluated for a residential area in
Shanghai, China. And, sensitivity analysis was conducted for each parameter. The results
showed that, the health risks caused by PAHs followed lognormal distribution with
3.43×10<sup>-5</sup>±2.63×10<sup>-5</sup>for carcinogenic risk, which
was between 8.10×10<sup>-7</sup>and 2.39×10<sup>-4</sup>and the probabilities
exceeding 10<sup>-6</sup>, 10<sup>-5</sup>and 10<sup>-4</sup>were 95%, 75% and less than
5%. And the value was 4.74×10<sup>-2</sup>±3.42×10<sup>-2</sup>for
hazard quotient, which was between 1.38×10<sup>-3</sup>and 2.85×10<sup>-
1</sup>and less than 1, so could be regarded negligible. As for total carcinogenic risk
(TCR), the most influential PAHs were BaP, DBA and BaA, and their contribution rates were
60.41%, 26.84% and 6.56%, respectively. Among the three exposure pathways, the risk was
mainly caused by oral intake with the contribution rate of 73.22%, followed by dermal
contact with 26.51%. The most influential parameters were: intake amount of soil per day,
exposure duration and exposed skin area with the sensitivity values of 58.35%, 50.21% and
20.51%, respectively. And body weight had a negative sensitivity with -11.66%. When it
came to total hazard quotient (THQ), Pyr, FL and PA accounted for the most with 36.56%,
33.18% and 13.18%, respectively. And the oral intake and dermal contact were also primary
exposure pathways with 72.21% and 26.36%. The most significant parameters were the same
with TCR with the sensitivity values of 63.52%, 53.18%, 24.39% and -13.98%, respectively.
© 2017, Science Press. All right reserved.
Number of references:30
Main heading:Health risks
Controlled terms:Hazards - Health - Intelligent systems - Monte Carlo methods -
Polycyclic aromatic hydrocarbons - Probability distributions - Risk assessment - Risks -
Sensitivity analysis - Soil pollution - Soils - Supply chains
Uncontrolled terms:Carcinogenic risk - Contaminated soils - Contribution rate -
Environmental health risk assessment - Exposure durations - Log-normal distribution -
Probabilistic risk - Sensitivity values
Classification code:461.6 Medicine and Pharmacology - 461.7 Health Care - 483.1 Soils
and Soil Mechanics - 723.4 Artificial Intelligence - 804.1 Organic Compounds - 912
Industrial Engineering and Management - 913 Production Planning and Control;
Manufacturing - 914.1 Accidents and Accident Prevention - 921 Mathematics - 922.1
Probability Theory - 922.2 Mathematical Statistics
Numerical data indexing:Percentage -1.17e+01%, Percentage -1.40e+01%, Percentage 1.32e
+01%, Percentage 2.05e+01%, Percentage 2.44e+01%, Percentage 2.64e+01%, Percentage 2.65e
+01%, Percentage 2.68e+01%, Percentage 3.32e+01%, Percentage 3.66e+01%, Percentage 5.00e
+00%, Percentage 5.02e+01%, Percentage 5.32e+01%, Percentage 5.84e+01%, Percentage 6.04e
+01%, Percentage 6.35e+01%, Percentage 6.56e+00%, Percentage 7.22e+01%, Percentage 7.32e
+01%, Percentage 7.50e+01%, Percentage 9.50e+01%
DOI:10.13227/j.hjkx.201611040
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 44>
Accession number:20173804179825
Title:Distribution and Emission Flux Estimation of Phosphorus in the Sediment and
Interstitial Water of Xiangxi River
Authors:Luo, Yu-Hong (1, 2, 3); Nie, Xiao-Qian (2, 3); Li, Xiao-Ling (2, 3); Dai, Ze-Long
(2, 3); Xu, Tao (2, 3); Huang, Ying-Ping (1, 2, 3)
Author affiliation:(1) College of Hydraulic & Environmental Engineering, Three Gorges
University, Yichang; 443002, China; (2) Innovation Center for Geo-Hazards and Eco-
Environment in Three Gorges Area, Yichang; 443002, China; (3) Engineering Research Center
of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, Three Gorges
University, Yichang; 443002, China
Corresponding author:Huang, Ying-Ping(chem_ctgu@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2345-2354
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The distribution and vertical variation of phosphorus forms in sediments along
Xiangxi River were analyzed with Hedley classification method, meanwhile the influences
of physical and chemical properties of overlying and interstitial water on the release of
phosphorus in sediment were discussed. The major findings showed that the pH values in
the overlying and interstitial water increased from 4.72 to 8.55, and were slightly
acidic in summer, while weak alkaline in other seasons. The redox potential of sediment
was in the reduction state overall. The annual variation range of total phosphorus (TP)
content in the overlying and interstitial water, and that in the sediment was 0.02-0.48
mg·L<sup>-1</sup>and 0.48-1.45 g·kg<sup>-1</sup>, respectively. The
distribution features of TP content in the sediment were the same with those in the
interstitial water along the Xiangxi River. It was interesting that the content of TP in
the interstitial water in spring and summer was higher than that in autumn and winter,
but that in the sediment of Xiangxi River was opposite. The content of different
phosphorus (P) forms decreased successively: HCl-P (HCl extracted phosphorus)>Res-P
(residual phosphorus)>NaOH-P (NaOH extracted phosphorus)>NaHCO<inf>3</inf>-P
(NaHCO<inf>3</inf>extracted phosphorus)>H<inf>2</inf>O-P (water-soluable phosphorus).
The reductive environment of the interface between sediment and overlying water, and pH
of water in spring (weak alkaline) and summer (slightly acidic), were conducive to
phosphorus release from sediment into overlying water, increasing the eutrophication
risk. TP content in the interstitial water was closely related to that in sediment. The
PO<inf>4</inf><sup>3-</sup>-P in 4 sampling areas diffused from the interstitial water
into the overlying water with diffusive fluxes in the range of 0.01-0.04 mg·
(m<sup>2</sup>·d)<sup>-1</sup>. All of these findings indicated that sediments is
an important source of nutrient for the overlying water. © 2017, Science Press. All
right reserved.
Number of references:39
Main heading:Sediments
Controlled terms:Alkalinity - Chemical analysis - Eutrophication - Phosphorus - Redox
reactions - River pollution - Rivers - Water resources
Uncontrolled terms:Classification methods - Distribution features - Emission fluxes -
Interstitial water - Phosphorus form - Physical and chemical properties - Vertical
variation - Xiangxi rivers
Classification code:444 Water Resources - 453 Water Pollution - 483 Soil Mechanics and
Foundations - 801.1 Chemistry, General - 802.2 Chemical Reactions - 804 Chemical
Products Generally
Numerical data indexing:Mass_Density 2.00e-05kg/m3 to 4.80e-04kg/m3
DOI:10.13227/j.hjkx.201610114
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 45>
Accession number:20173804179848
Title:Correlations Between Different Extractable Cadmium Levels in Typical Soils and
Cadmium Accumulation in Rice
Authors:Chen, Qi (1); Deng, Xiao (1); Chen, Shan (1); Hou, Hong-Bo (1); Peng, Pei-Qin
(1); Liao, Bo-Han (1)
Author affiliation:(1) College of Environmental Science and Engineering, Central South
University of Forestry and Technology, Changsha; 410004, China
Corresponding author:Peng, Pei-Qin(pqpeng123@sina.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2538-2545
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Pot experiments were used to study the correlations between different
extractable cadmium levels in typical soil and cadmium accumulation in rice. To analyze
the pH, Cd in soil solution(SSE-Cd), TCLP extractable Cd level(TCLP-Cd), and Cd
accumulation in rice at different growth stages of rice, we conducted pot experiments
which selected the reddish clayey soil(developed from quaternary red clay parent
materials) and purple paddy field(developed from purple sandy shale parent materials),
meanwhile added with exogenous Cd with the gradients of 0, 0.5, 1, 2, 5, 10
mg·kg<sup>-1</sup>. The results showed that, during the rice growth period, the
content of SSE-Cd in reddish clayey soil was in the range of 0 and 2.5
μg·L<sup>-1</sup>, and the average content was 0.57 μg·L<sup>-
1</sup>; TCLP-Cd was in the range of 0 and 0.25 μg·L<sup>-1</sup>with the
average content of 0.10 mg·kg<sup>-1</sup>; The content of SSE-Cd in purple paddy
field was in the range of 0 and 1.6 μg·L<sup>-1</sup>with the average content
of 0.48 μg·L<sup>-1</sup>; TCLP-Cd was in the range of 0 and 0.2
mg·kg<sup>-1</sup>, and the average content was 0.07 mg·kg<sup>-1</sup>. It
showed that the cadmium concentrations in soil solution and the TCLP extractable Cd
levels were both significantly reduced in two types of soil with the extension of rice
growth period, and the content in reddish clayey soil was higher than that in purple
paddy. The TCLP extractable Cd level was significantly positively correlated with Cd
concentration in soil solution. The total Cd accumulation in rice plants gradually
increased with increasing exogenous Cd concentration. There were significant positive
correlations between Cd concentration in soil solution and Cd concentration in rice, Cd
concentration in soil extracted by TCLP method and Cd concentration in rice and total Cd
accumulation in rice plant. The soil environmental capacities of the two different parent
materials varied greatly, and the safety threshold of Cd in purple paddy field was 2.06
times of that of reddish clayey soil. There were significant differences in Cd uptake and
accumulation in different soils, so different measures may be needed to control Cd
pollution in different parent materials. TCLP extractable Cd was more relevant with total
Cd accumulation in rice, and had more extraction amount. Therefore, the TCLP method can
more accurately evaluate the biological availability of soil Cd. © 2017, Science
Press. All right reserved.
Number of references:34
Main heading:Soil pollution
Controlled terms:Cadmium - Pollution - Pollution control - Soil moisture - Soils
Uncontrolled terms:Cd concentrations - Different growth stages - Environmental capacity -
Growth period - Positive correlations - Soil solutions - TCLP - Uptake and accumulations
Classification code:483.1 Soils and Soil Mechanics - 549.3 Nonferrous Metals and Alloys
excluding Alkali and Alkaline Earth Metals
Numerical data indexing:Mass_Density 0.00e+00kg/m3, Mass_Density 1.60e-06kg/m3,
Mass_Density 2.50e-06kg/m3, Mass_Density 2.50e-07kg/m3
DOI:10.13227/j.hjkx.201610158
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 46>
Accession number:20173804179847
Title:Influencing Mechanism of Eh, pH and Iron on the Release of Arsenic in Paddy Soil
Authors:Zhong, Song-Xiong (1, 2); Yin, Guang-Cai (2); Chen, Zhi-Liang (1); Lin, Qin-Tie
(2); Huang, Run-Lin (2); Liu, De-Ling (2); Peng, Huan-Long (1); Huang, Ling (1); Wang,
Xin (1); Jiang, Xiao-Lu (1)
Author affiliation:(1) South China Institute of Environmental Science, Ministry of
Environmental Protection, Guangzhou; 510665, China; (2) School of Environmental Science
and Engineering, Guangdong University of Technology, Guangzhou; 510006, China
Corresponding author:Chen, Zhi-Liang(chenzhiliang@scies.org)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2530-2537
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The massive release of soil arsenic and its enrichment in rice are significantly
associated with the flooded and anaerobic management in paddy soil. Soil redox potential
(Eh), pH and iron oxides exert remarkable impacts on arsenic release, which remain to be
explored. In this study, long-term aerobic and anaerobic as well as intermittent aerobic
incubation treatments were applied to investigate the influences of Eh, pH and iron
content on arsenic release. It was found that anaerobic and flooded treatment contributed
to the highest arsenic release. With decreasing Eh, significant enhancement in As(III)
and As(V) contents in soil solution was observed. Particularly, As(III) and As(V)
contents during the second phase increased by 1.37 and 0.99 μg·L<sup>-
1</sup>compared with those in the first phase. Conversely, significant reduction in soil
arsenic release (P<0.05) occurred when intermittent aerobic treatment was adopted, and
the lowest level of arsenic release was observed along with the longest treatment time (6
d). The exponent relationships between arsenic and soil Eh, pH and Fe<sup>2+</sup>content
were also established, which indicated that arsenic release could be accelerated by lower
pH and elevated Eh. In addition, a significant positive correlation was also found
between iron(II) content and arsenic content in soil solution. Since low Eh and elevated
pH served as critical factors driving arsenic release, intermittent and aerobic water
management was proved to be an effective method for the inhibition of arsenic release and
uptake and accumulation of arsenic by rice. © 2017, Science Press. All right
reserved.
Number of references:41
Main heading:Arsenic
Controlled terms:Floods - Iron - Redox reactions - Soil moisture - Soils - Water
management
Uncontrolled terms:Influencing mechanisms - Microenvironments - Paddy soils - pH value -
Positive correlations - Redox potentials - Soil redox potential - Uptake and
accumulations
Classification code:483.1 Soils and Soil Mechanics - 545.1 Iron - 802.2 Chemical
Reactions - 804 Chemical Products Generally
DOI:10.13227/j.hjkx.201611237
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 47>
Accession number:20173804179837
Title:Ammonia Removal Rate and Microbial Community Structures in Different Biofilters for
Treating Aquaculture Wastewater
Authors:Zhou, Hong-Yu (1, 2); Han, Mei-Lin (1); Qiu, Tian-Lei (1); Gao, Min (1); Sun,
Xing-Bin (2); Wang, Xu-Ming (1, 3)
Author affiliation:(1) Beijing Agro-Biotechnology Research Center, Beijing Academy of
Agriculture and Forestry Sciences, Beijing; 100097, China; (2) College of Forestry
Science, Northeast Forestry University, Harbin; 150040, China; (3) Key Laboratory of
Urban Agriculture (North), Ministry of Agriculture, Beijing; 100097, China
Corresponding author:Qiu, Tian-Lei(qqray@hotmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2444-2452
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Three MBBRs and three curtain type trickling filters (CTFs) with different
carriers were operated in lab-scale simulated RASs. The characteristics of biofilms,
ammonia removal rates and microbial communities in six reactors were compared with each
other. Compared with the biofilms of MBBRs, the biofilms of CTFs were heavier and grew
faster. The weight of biofilms on CTFs with carbon fiber carriers was the maximum (45.97
g·m<sup>-2</sup>), and the ammonia nitrogen removal efficiency (86.76%) of this
CTFs was higher than the other filters or reactors (61.96%~78.76%). In addition, the
concentration of the accumulated nitrite in the carbon fiber CTFs was the lowest in all
the six reactors. The microbial communities of biofilms in the six biofilters were
evaluated by the high-throughput Illumina-MiSeq sequencing technology. The results showed
that the microbial (bacteria and eukaryote) community in biofilms of CTFs was different
from that in biofilms of MBBRs. At both bacteria and micro-eukaryote level, the species
richness and biological diversity of biofilms in the trickling filters were higher than
those in the MBBRs. On the contrary, the Simpson index of bacterial community in biofilms
of MBBRs was higher than that in the trickling filters. In all the six biofilters,
Nitrospira and Nakamurella were the dominated bacterial genera. Saprospiraceae was more
abundant in CTFs than in MBBRs, but Comamonadaceae was enriched in the MBBRs. At the
micro-eukaryote genus level, Rhabditida norank genus was more abundant in CTFs, while
Chlorophyceae norank genus was more abundant in the MBBRs. The results provide useful
information about microbial ecology that can be used for the application of CTFs in RAS.
© 2017, Science Press. All right reserved.
Number of references:30
Main heading:Bacteria
Controlled terms:Ammonia - Aquaculture - Biofilms - Biofilters - Carbon fibers - Ecology
- Filters (for fluids) - Microorganisms - Nitrogen removal - Wastewater treatment
Uncontrolled terms:Ammonia removal - Illumina - MBBR - Recirculating aquaculture system -
Trickling filter
Classification code:452.4 Industrial Wastes Treatment and Disposal - 454.3 Ecology and
Ecosystems - 461.9 Biology - 462.5 Biomaterials (including synthetics) - 804 Chemical
Products Generally - 804.2 Inorganic Compounds - 821.3 Agricultural Methods
Numerical data indexing:Percentage 8.68e+01%
DOI:10.13227/j.hjkx.201610142
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 48>
Accession number:20173804179819
Title:Correlations of Light-duty Gasoline Vehicle Emissions Based on VMAS and CVS
Measurement Systems
Authors:Wang, Hong-Yu (1); Huang, Cheng (2, 3); Hu, Qing-Yao (2, 3); Li, Li (2, 3); Chen,
Yong-Hang (1); Xu, Jian (1)
Author affiliation:(1) School of Environmental Science and Engineering, Donghua
University, Shanghai; 201620, China; (2) Shanghai Academy of Environmental Sciences,
Shanghai; 200233, China; (3) State Environment Protection Key Laboratory of Formation and
Prevention of the Urban Air Complex, Shanghai; 200233, China
Corresponding author:Huang, Cheng(huangc@saes.sh.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2294-2300
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Gaseous emissions from 25 State 2-5 light-duty gasoline vehicles were tested by
Vehicle Mass Analysis System (VMAS) and CVS (Constant Volume Sampling) system,
respectively. The correlations of emission factors of tested vehicles measured by these 2
methods were analyzed. The results showed that emission factors of light-duty gasoline
vehicle had a decreasing trend with the promotion of emission standard. There were some
high-emitting vehicles in the fleet of tested State 2 and State 3 vehicles, but fewer in
State 4 or Stated 5 vehicle fleet. The correlations of the emission factors measured by
the 2 methods deteriorated with the promotion of emission standard. The relative bias of
CO and HC+NO<inf>x</inf>emission factors measured by the 2 methods reached 197% and 177%,
respectively. The correlation coefficient of emission factors of higher-emitting vehicles
was 0.75-0.85, while that of lower-emitting vehicles was only 0.46. If tighter emission
standard of in-use light-duty gasoline vehicle was adopted, the false positive rate of
measurement results by VMAS would rise significantly. In summary, VMAS method is hard to
be applied in the emission measurements of light-duty gasoline vehicles with stricter
emissions standard. It is necessary to conduct more studies on sophisticated in-use
vehicle measurement system. © 2017, Science Press. All right reserved.
Number of references:24
Main heading:Fleet operations
Controlled terms:Gasoline - Motor transportation - Vehicles
Uncontrolled terms:Constant volume sampling - Correlation coefficient - Emission factors
- False positive rates - High emitting vehicles - Light duty gasoline vehicles - Vehicle
emission - VMAS
Classification code:523 Liquid Fuels
Numerical data indexing:Percentage 1.77e+02%, Percentage 1.97e+02%
DOI:10.13227/j.hjkx.201611139
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 49>
Accession number:20173804179856
Title:Accumulation Characteristics and Health Risk Assessment of Heavy Metals in Wild
Fish Species from Diaojiang River, Guangxi
Authors:Wang, Jun-Neng (1, 2, 4); Ma, Peng-Cheng (2, 3, 5); Zhang, Li-Juan (2, 5); Chen,
Mian-Biao (2, 5); Huang, Chu-Shan (2, 5); Liu, Xiao-Lin (3); Hu, Guo-Cheng (2, 5); Xu,
Zhen-Cheng (1, 2)
Author affiliation:(1) Guangzhou Institute of Geochemistry, Chinese Academy of Sciences,
Guangzhou; 510640, China; (2) South China Institute of Environmental Sciences, Ministry
of Environmental Protection, Guangzhou; 510530, China; (3) School of Public Health,
Jinzhou Medical University, Jinzhou; 121000, China; (4) University of Chinese Academy of
Sciences, Beijing; 100049, China; (5) State Environmental Protection Key Laboratory of
Environmental Pollution Health Risk Assessment, Guangzhou; 510530, China
Corresponding author:Xu, Zhen-Cheng(xuzhencheng@scies.org)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2600-2606
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To explore the accumulation characteristics and health risk assessment of heavy
metals in wild fish species, the concentrations of heavy metals (Pb, Cd, Cr, As and Hg)
in the muscle samples of eight wild fish species collected from Diaojiang River, Guangxi
were analyzed. The degree of pollution, food safety and health risk of heavy metals in
wild fish species were evaluated using the average pollution index and the target hazard
quotient methods. The results showed that the concentrations of Pb, Cd, Cr, As and Hg in
wild fish species ranged from 0.041 to 1.160, 0.000 1 to 0.066, 0.173 to 0.789, 0.010 to
2.420 and 0.000 7 to 0.077mg·kg<sup>-1</sup>, respectively. The concentrations of
Pb and As in wild fish species exceeded the limit values of the Maximum Levels of
Contaminants in Foods (GB 2762-2012), and the over-standard rates were 5.06% and 64.56%
respectively. The concentrations of Cd, Cr and Hg did not exceed the standard. The
average pollution index results showed that Acheilognathus tonkinensis and Acheilognathus
barbatus were seriously polluted by heavy metals. The Oreochromis niloticus were
moderately polluted. The Siniperca kneri Garman, Carassius auratus, Pseudohemiculter
dispar, Ctenopharyngodon idellus, Hemiculter leucisculus were slightly polluted. Higher
bioaccumulation factors of Pb, Cr and Hg were found in wild fish species from Diaojiang
River. The concentrations of heavy metals in carnivorous fish and omnivorous fish were
higher than those in herbivorous fish. Potential health risk assessment showed that the
total target hazard quotients (TTHQ) of Acheilognathus tonkinensis and Acheilognathus
barbatus were higher than 1. It indicated that the local residents posed higher human
health risk due to the long-term consumption of Acheilognathus tonkinensis and
Acheilognathus barbatus. Among all the TTHQ in wild fish species (except Pseudohemiculter
dispar and Hemiculter leucisculus), the contribution rate of As was the highest, and the
average contribution rate reached 76.63%, which indicated that As was the main risk
factor. © 2017, Science Press. All right reserved.
Number of references:37
Main heading:River pollution
Controlled terms:Biochemistry - Cadmium - Chemical contamination - Fish - Hazards -
Health - Health risks - Heavy metals - Lead - Pollution - Risk assessment - Rivers
Uncontrolled terms:Accumulation - Accumulation characteristics - Bioaccumulation factor -
Degree of pollutions - Human health risks - Oreochromis niloticus - Potential health
risks - Target hazard quotients
Classification code:453 Water Pollution - 461.6 Medicine and Pharmacology - 461.7
Health Care - 531 Metallurgy and Metallography - 546.1 Lead and Alloys - 549.3
Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 801.2
Biochemistry - 822.3 Food Products - 914.1 Accidents and Accident Prevention
Numerical data indexing:Percentage 5.06e+00%, Percentage 6.46e+01%, Percentage 7.66e+01%
DOI:10.13227/j.hjkx.201611188
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 50>
Accession number:20173804179840
Title:Evolution of Extracellular Polymeric Substances of the Activated Sludge with
Calcium Ion Addition During Set-up Period of Sequencing Batch Reactors
Authors:Ren, Li-Fei (1); Yang, Xin-Ping (1); Zhang, Wen-Wen (1)
Author affiliation:(1) College of Resources and Environmental Sciences, Nanjing
Agricultural University, Nanjing; 210095, China
Corresponding author:Yang, Xin-Ping(xpyang@njau.eud.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2470-2476
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Great attention has been paid to accelerate the start-up period and enhance floc
properties and structural stability in activated sludge reactors with the aid of
inorganic chemical agents such as calcium ion. The laboratory-scale sequencing batch
reactors (SBRs) were operated continuously for 35 days to investigate the effect of
calcium ion (Ca<sup>2+</sup>) on the physicochemical properties and evolution of
extracellular polymeric substances (EPS) of activated sludge during set-up period. When
compared to the control (non-calcium ion addition), the addition of 150
mg·L<sup>-1</sup>Ca<sup>2+</sup>to the influent significantly increased the mixed
liquid suspended solids (MLSS) and the mixed liquid volatile suspended solids (MLVSS) by
89.6% and 75.6% on 28 d, respectively, and decreased the sludge volume index (SVI) by
47.9% following SBRs set-up. Compared with the control system, the contents of EPS,
polysaccharides (PS) and proteins (PN) were increased by 76.4%, 28.8% and 31.6% under the
condition of Ca<sup>2+</sup>dosage of 150 mg·L<sup>-1</sup>. The PS/PN ratio was
68.8 for Ca<sup>2+</sup>addition, compared to only 36.6 for the control reactor. Analysis
using three-dimensional excitation emission matrix fluorescence spectroscopy and Fourier
transform infrared spectrum revealed that Ca<sup>2+</sup>addition changed the
compositional characteristics of EPS. Results from this study provided a fundamental
knowledge basis for the improvement of the settling properties of activated sludge with
calcium ion addition. © 2017, Science Press. All right reserved.
Number of references:36
Main heading:Ions
Controlled terms:Activated sludge process - Batch reactors - Calcium - Chemical stability
- Fluorescence spectroscopy - Inorganic chemicals - Polymers - Stability
Uncontrolled terms:Activated sludge - Dynamic changes - Extra-cellular polymeric
substances - Settling properties - Up period
Classification code:452.2 Sewage Treatment - 549.2 Alkaline Earth Metals - 741.3
Optical Devices and Systems - 801 Chemistry - 802.1 Chemical Plants and Equipment -
804.2 Inorganic Compounds - 815.1 Polymeric Materials
Numerical data indexing:Mass_Density 1.50e-01kg/m3, Percentage 2.88e+01%, Percentage
3.16e+01%, Percentage 4.79e+01%, Percentage 7.56e+01%, Percentage 7.64e+01%, Percentage
8.96e+01%
DOI:10.13227/j.hjkx.201612090
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 51>
Accession number:20173804179834
Title:Purification Efficiency and Influencing Factors of Combined Bio-filters for
Aquaculture Wastewater
Authors:Zhang, Shi-Yang (1, 2); Zhang, Sheng-Hua (3); Zhang, Xiang-Ling (2); Wang,
Guang-Jun (1)
Author affiliation:(1) Key Laboratory of Tropical & Subtropical Fishery Resource
Application and Cultivation, Pearl River Fisheries Research Institute, Chinese Academy of
Fishery Sciences, Guangzhou; 510380, China; (2) School of Civil Engineering and
Architecture, Wuhan University of Technology, Wuhan; 430070, China; (3) College of
Resources and Environmental Science, South-Central University for Nationalities, Wuhan;
430074, China
Corresponding author:Wang, Guang-Jun(gjwang@prfri.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2419-2428
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:As an effective technology for wastewater treatment, bio-filter has been widely
used. Nevertheless, there is still a lack of systematic report on purification efficiency
and influencing factors of combined bio-filters. To this end, a novel combined system
that consisted of aerated vertical-flow filter (AVF) followed by baffled horizontal-flow
filter (BHF) was designed. After setting a series of hydraulic loading rates (131, 94 and
60 mm·d<sup>-1</sup>) and diversion ratios (8∶2, 6∶4, 4∶6), we
comprehensively assessed the impact of running condition adjustment on treatment
performance by multiple statistical analyses. The results showed that, the average
removal rates of organic matter, ammonia nitrogen and dissolved nitrogen in AVF were all
above 80%, while the average removal rates of ammonia nitrogen, total nitrogen and
dissolved nitrogen in BHF were all below 40%. Different running conditions had a
significant (P<0.05) impact on treatment performance. Meanwhile, there were
significant differences in purification efficiency between the two different kinds of
filters. Oxidative degradation was one of the main ways to remove organic matter in the
two kinds of filters. There were obvious nitrification and denitrification processes
within the two kinds of filters. Nitrification followed by denitrification was the main
way to remove total nitrogen since ammonium occupied the most portion of total nitrogen
in the synthetic wastewater. Meanwhile, the intensity of nitrification and
denitrification in AVF was obviously higher than that in BHF. Phosphorus removal was
mainly controlled by hydraulic loading rate, temperature, dissolved oxygen, organic
matter, etc. This might indicate that microbial absorption was one of the main ways to
remove phosphorus for the two filters. Compared to the sole AVF, the removal of total
organic matter and total phosphorus in the combined system was increased by 4.4% and
23.2%, respectively, but the removal of total nitrogen was reduced by 12.1%. Reducing the
diversion ratio was helpful to improve the denitrification intensity in BHF. However, due
to the introduction of excessive ammonia from the raw wastewater, as well as the limited
nitrification capacity in BHF, the removal rate of total nitrogen for the combined system
was decreased. Therefore, according to the composition of treated raw wastewater, the
control of appropriate diversion ratio, residence time and redox conditions inside the
filter bed was the key to enhance the overall performance of the combined system. ©
2017, Science Press. All right reserved.
Number of references:27
Main heading:Loading
Controlled terms:Ammonia - Bandpass filters - Biogeochemistry - Biological materials -
Denitrification - Dissolution - Dissolved oxygen - Efficiency - Nitrification - Nitrogen
- Nitrogen removal - Organic compounds - Phosphorus - Purification - Turbines -
Wastewater treatment
Uncontrolled terms:Combined system - Horizontal flows - Hydraulic loading rates - Removal
efficiencies - Vertical flow filters
Classification code:452.4 Industrial Wastes Treatment and Disposal - 461.2 Biological
Materials and Tissue Engineering - 481.2 Geochemistry - 691.2 Materials Handling
Methods - 703.2 Electric Filters - 802.2 Chemical Reactions - 802.3 Chemical
Operations - 804 Chemical Products Generally - 913.1 Production Engineering
Numerical data indexing:Percentage 1.21e+01%, Percentage 2.32e+01%, Percentage 4.00e+01%,
Percentage 4.40e+00%, Percentage 8.00e+01%
DOI:10.13227/j.hjkx.201611024
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 52>
Accession number:20173804179854
Title:Effects of Long-term Organic Amendments on Soil N<inf>2</inf>O Emissions from
Winter Wheat-maize Cropping Systems in the Guanzhong Plain
Authors:Hao, Yao-Xu (1); Liu, Ji-Xuan (1); Yuan, Meng-Xuan (1); Zhou, Ying-Tian (1);
Yang, Xue-Yun (1); Gu, Jiang-Xin (1)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China
Corresponding author:Gu, Jiang-Xin(gujiangxin@nwsuaf.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:6
Issue date:June 15, 2017
Publication year:2017
Pages:2586-2593
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The primary aim of this study was to quantify the effects of long-term organic
amendments on soil nitrous oxide (N<inf>2</inf>O) emissions. Using static chamber-gas
chromatograph technique, we measured N<inf>2</inf>O fluxes from winter wheat-maize
rotation system and related environmental factors in the Guanzhong Plain for one year
(October 2014 to October 2015). Field experiments were based on the “Chinese
National Loess Fertility and Fertilizer Effects Long-term Monitoring Experiment”.
Four treatments were control (CK, 0 kg·hm<sup>-2</sup>), NPK (NPK, 353
kg·hm<sup>-2</sup>), NPK combined with maize straw [NPKS, (353+40)
kg·hm<sup>-2</sup>] and cattle waste [NPKM, (238+115) kg·hm<sup>-2</sup>].
During the experimental period, N<inf>2</inf>O fluxes from CK treatment were small
[<2.9 g·(hm<sup>2</sup>·d)<sup>-1</sup>]; while emissions from
fertilized treatments peaked after fertilization [up to 113.4 g·
(hm<sup>2</sup>·d)<sup>-1</sup>for NPKS] and irrigation [up to 495.0 g·
(hm<sup>2</sup>·d)<sup>-1</sup>for NPKM] during winter wheat and maize seasons,
respectively. N<inf>2</inf>O flux was significantly correlated to soil water-filled pore
space for all treatments (r>0.28, P<0.05). Annual N<inf>2</inf>O emissions were
(0.1±0.0), (2.6±0.1), (3.4±0.7) and (2.9±0.3)
kg·hm<sup>-2</sup>for CK, NPK, NPKS and NPKM, respectively. The fertilized
treatments released higher N<inf>2</inf>O emissions than CK treatment (P<0.05),
indicating that fertilization stimulated N<inf>2</inf>O emissions. However, the
differences in N<inf>2</inf>O emissions were not significant among the fertilized
treatments (P=0.06), suggesting that organic amendments did not increase N<inf>2</inf>O
emissions obviously. The direct emission factors were 0.72%, 0.83% and 0.80% for NPK,
NPKS and NPKM, respectively, all of which were lower than the IPCC default of 1%. The
yield-scaled N<inf>2</inf>O emission for NPKM was the lowest among the fertilized
treatments. © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Crops
Controlled terms:Nitrogen oxides - Soil moisture - Soils
Uncontrolled terms:Cattle waste - Direct emissions - Environmental factors - Field
experiment - Gas chromatographs - Long term monitoring - Long-term fertilization -
Organic amendments
Classification code:483.1 Soils and Soil Mechanics - 804.2 Inorganic Compounds - 821.4
Agricultural Products
Numerical data indexing:Percentage 1.00e+00%, Percentage 7.20e-01%, Percentage 8.00e-01%,
Percentage 8.30e-01%
DOI:10.13227/j.hjkx.201609258
<RECORD 1>
Accession number:20174404325973
Title:Distribution Characteristics and Potential Risk of Bisphenol Analogues in Surface
Water and Sediments of Lake Taihu
Authors:Chen, Mei-Hong (1, 2); Guo, Min (2); Xu, Huai-Zhou (2); Liu, Dan (3); Cheng, Jie
(4); Li, Jiang (1); Zhang, Sheng-Hu (2); Shi, Li-Li (2)
Author affiliation:(1) College of Resources and Environmental Engineering, Guizhou
University, Guiyang; 550025, China; (2) Nanjing Institute of Environmental Sciences,
Ministry of Environmental Protection, Nanjing; 210042, China; (3) College of Chemistry
and Molecular Engineering, Nanjing Tech University, Nanjing; 211816, China; (4) Second
Institute of Oceanography, State Oceanic Administration, Hangzhou; 310112, China
Corresponding author:Li, Jiang(lijiang0808@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2793-2800
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this study, seven bisphenol analogues were measured in water and sediment
samples from Taihu Lake, and potential risk was evaluated. The results showed that BPF,
BPS and BPA were the predominant components in water samples from Lake Taihu. In
sediment, BPA was always predominant, followed by BPF and BPS, and there was a
significant positive correlation between BPs and TOC content. In addition, the high
concentration levels of BPF, BPS and BPA were distributed in the tributaries of Lake
Taihu (S4-S10). The risk assessment of the target BPs showed that the combined risk
quotients posed a low eco-toxicity to aquatic ecosystem, and there was no appreciable
risk to human health from potential environmental exposure of drinking water. ©
2017, Science Press. All right reserved.
Number of references:32
Main heading:Risk assessment
Controlled terms:Aquatic ecosystems - Bandpass filters - Health risks - Lakes - Phenols -
Potable water - Sediments - Surface waters - Water
Uncontrolled terms:Bisphenols - Concentration levels - Distribution characteristics -
Environmental exposure - Lake taihu - Positive correlations - Risk to human health -
Sediment samples
Classification code:444 Water Resources - 444.1 Surface Water - 454.3 Ecology and
Ecosystems - 461.7 Health Care - 483 Soil Mechanics and Foundations - 703.2 Electric
Filters - 804.1 Organic Compounds - 914.1 Accidents and Accident Prevention
DOI:10.13227/j.hjkx.201611091
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 2>
Accession number:20174404325986
Title:Selective Inhibition of Rice Straw Extract on Growth of Cyanobacteria and
Chlorophyta
Authors:Su, Wen (1); Chen, Jie (1); Zhang, Sheng-Peng (1); Kong, Fan-Xiang (2)
Author affiliation:(1) South China Sea Institute of Planning and Environmental Research,
State Oceanic Administration, Guangzhou; 510300, China; (2) State Key Laboratory of Lake
Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of
Sciences, Nanjing; 210008, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2901-2909
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Rice straw is supposed to be an environment-friendly biomaterial for inhibiting
the growth of harmful blooms of the cyanobacterium Microcystis aeruginosa. The effects of
rice straw extract (RSE) on algal growth, morphologic parameters (cell size), and
physiological parameters (in vivo Chl-a fluorescence) were investigated using flow
cytometry. We examined the selective inhibitory potential of rice straw on four
cyanobacterial strains (toxic and non-toxic Microcystis aeruginosa, toxic Anabaena flos-
aquae, and Microcystis ichthyoblabe), in comparison with inhibitory effects on three
common freshwater green algae (Selenastrum capricornutum, Chlorella pyrenoidosa, and
Scenedesmus obliqnus). Concentrations from 2.0 to 10.0 g·L<sup>-1</sup>of RSE were
found to efficiently inhibit the growth of cyanobacteria in a dose-dependent manner,
simultaneously modifying the in vivo Chl-a fluorescence and cell size. The 50% growth-
inhibition concentration (7 d) of A. flos-aquae, M. ichthyoblabe, M. aeruginosa (toxic
strain), M. aeruginosa (non-toxic strain) was 1.72, 2.21, 2.92 and 5.72 g·L<sup>-
1</sup>, respectively. Interestingly, the growth and cell size of C. pyrenoidosa and S.
obliqnus increased with the addition of RSE and colony formation was observed. In the
case of S. capricornutum, the inhibitory effect of RSE on growth and in vivo Chl-a
fluorescence occurred at 1.0-4.0 g·L<sup>-1</sup>, while RSE induced a stimulatory
effect on algal growth at 8.0-10.0 g·L<sup>-1</sup>. Taken together, the
sensitivity of cyanobacteria to RSE was significantly higher than that of S.
capricornutum, C. pyrenoidosa and S. obliqnus. The higher sensitivity of PSII reaction
center of cyanobacteria and the ability to form colonies of green algae may have
important implications for the species-specific allelopathic antialgal activity of rice
straw. © 2017, Science Press. All right reserved.
Number of references:41
Main heading:Algae
Controlled terms:Bacteria - Biology - Flow cytometry - Fluorescence - Physiological
models
Uncontrolled terms:Allelopathy - Cyanobacterial strains - Inhibitory effect - Microcystis
aeruginosa - Microcystis ichthyoblabe - Physiological parameters - Rice straws -
Selenastrum capricornutum
Classification code:461.9 Biology - 741.1 Light/Optics - 741.3 Optical Devices and
Systems
Numerical data indexing:Mass_Density 1.00e+00kg/m3 to 4.00e+00kg/m3, Mass_Density 2.00e
+00kg/m3 to 1.00e+01kg/m3, Mass_Density 2.92e+00kg/m3, Mass_Density 5.72e+00kg/m3,
Mass_Density 8.00e+00kg/m3 to 1.00e+01kg/m3, Percentage 5.00e+01%
DOI:10.13227/j.hjkx.201612017
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 3>
Accession number:20174404325970
Title:Distribution and Sources of n-alkanes in Surface Seawater of Jiaozhou Bay
Authors:Zhang, Qian (1, 2); Song, Jin-Ming (1, 2, 3); Peng, Quan-Cai (1, 2); Li, Xue-Gang
(1, 2, 3); Yuan, Hua-Mao (1, 2, 3); Li, Ning (1, 2, 3); Duan, Li-Qin (1, 2, 3); Qu, Bao-
Xiao (1, 3); Wang, Qi-Dong (1, 3)
Author affiliation:(1) CAS Key Laboratory of Marine Ecology and Environmental Sciences,
Institute of Oceanology, Chinese Academy of Sciences, Qingdao; 266071, China; (2) College
of Earth Sciences, University of Chinese Academy of Sciences, Beijing; 100049, China; (3)
Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for
Marine Science and Technology, Qingdao; 266237, China
Corresponding author:Song, Jin-Ming(jmsong@qdio.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2763-2772
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Hydrocarbons emitted by human activities probably constitute the largest class
of contaminants that are present in coastal areas, because of widespread use of fossil
fuels for power generation and logistics, and accidental spillages. The chemical
composition of hydrocarbon mixtures found in the marine environment allowed the
identification of relative contributions of different natural and anthropogenic sources.
Identification of these hydrocarbons, especially n-alkanes, could act as tracers for the
possible sources. To evaluate n-alkanes concentrations with emphasis on source analysis,
surface water without visible oil was collected from the cruise in April 2016.
Determination and quantification were performed by solvent extraction and gas
chromatography-mass spectrometry. Various molecular diagnostic parameters were used to
assess the contribution of different sources and origin of n-alkanes in surface seawater
of Jiaozhou Bay. Concentrations of total dissolved n-alkanes (C<inf>11</inf>-
C<inf>37</inf>) were between 1.756-39.09 μg·L<sup>-1</sup>with a high carbon
number predominance profile without odd-even carbon number preference. The n-alkane
concentrations varied spatially depending on the distance away from main input sources
and the ability of water exchange. It was at a higher concentration in the northeast and
west coastal areas, as well as the mouth of Jiaozhou Bay. And concentrations were
relatively lower in the inner area and outside of Jiaozhou Bay. In the sea area with
strong water exchange, concentrations of total n-alkanes were around 2.196
μg·L<sup>-1</sup>, which could be considered as the environmental background
level of n-alkanes in Jiaozhou Bay. Those n-alkanes were dominated with C<inf>24</inf>,
with a slightly odd carbon number preference in low carbon n-alkanes and an even carbon
number preference in high carbon n-alkanes. The values of CPI for the whole range of n-
alkanes series, low carbon n-alkanes, and high carbon n-alkanes were 0.949, 1.026, and
0.980, respectively. Diagnostic indices and curves indicated that the dominant inputs of
those n-alkanes were from marine biogenic input such as algae and marine bacteria. The
concentration profiles of n-alkanes in other areas were characterized by no odd-even
predominance in the range of C<inf>21</inf>-C<inf>33</inf>with peaks center at
C<inf>24</inf>which were indicative of anthropic contributions as emission sources. N-
alkanes dominating with anthropic sources comprised a high proportion (83.7%) of total
n-alkanes. Activities of harbors and ships were the main contributors of Jiaozhou Bay n-
alkanes. Physical processes, such as evaporation and dilution, were the principal
weathering mechanisms. Because of its sufficient environmental capacity, Jiaozhou Bay was
still moderately contaminated with petroleum. © 2017, Science Press. All right
reserved.
Number of references:43
Main heading:Paraffins
Controlled terms:Bacteria - Barium compounds - Chromatography - Coastal zones - Fossil
fuels - Gas chromatography - Hydrocarbons - Mass spectrometry - River pollution -
Seawater - Solvent extraction - Surface waters
Uncontrolled terms:Jiaozhou Bay - n-Alkanes - Pollution evaluation - Source - Surface
seawater
Classification code:444.1 Surface Water - 453 Water Pollution - 471 Marine Science and
Oceanography - 471.4 Seawater, Tides and Waves - 801 Chemistry - 802.3 Chemical
Operations - 804.1 Organic Compounds
Numerical data indexing:Mass_Density 1.76e-06kg/m3 to 3.91e-05kg/m3, Mass_Density 2.20e-
06kg/m3, Percentage 8.37e+01%
DOI:10.13227/j.hjkx.201701016
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 4>
Accession number:20174404325982
Title:Degradation of N-nitrosodimethylamine by Palladium/Iron Bimetallic Composite
Catalytic Fiber
Authors:Zhang, Huan (1, 2, 3); Fu, Min (2); Wei, Jun-Fu (1, 2, 3); Wang, Yi-Bing (2); An,
Hui-Ying (2); Shen, Shu-Yi (2)
Author affiliation:(1) State Key Laboratory of Separation Membranes and Membrane
Processes, Tianjin Polytechnic University, Tianjin; 300387, China; (2) School of
Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin; 300387,
China; (3) Tianjin Engineering Center for Safety Evaluation of Water Quality &
Safeguards Technology, Tianjin Polytechnic University, Tianjin; 300387, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2868-2874
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:N-nitrosodimethylamine (NDMA) in the water environment is a carcinogenic organic
contaminant, which can be converted to hypotoxic compounds by zero-valent iron
degradation. For the removal of trace NDMA in water, the theory and efficiency of zero-
valent iron degradation should be intensely researched. In this study, the polypropylene
(PP) fibers were chosen as substrate materials and the composite catalyst fibers
containing Pd/Fe<sup>0</sup>bimetal were prepared by the UV irradiation-coordination
method for the removal of trace NDMA. Pd/Fe<sup>0</sup>/PP-g-AA was characterized by
scanning electron microscope, inductively coupled plasma atomic emission spectrometry,
and X-ray photoelectron spectroscopy. The NDMA removal by Pd/Fe<sup>0</sup>/PP-g-AA under
different conditions was investigated. The results indicated that when the acrylic acid
monomer mass fraction was 20%, the composite catalytic fiber Pd/ Fe<sup>0</sup>/PP-g-AA
showed a better degradation effect on NDMA. The removal of NDMA followed the pseudo-
first-order reaction kinetics model. The initial NDMA concentration and the pH of the
solution could not greatly influence the catalytic degradation of trace amounts of NDMA.
The presence of CO<inf>3</inf><sup>2-</sup>and NO<inf>3</inf><sup>-</sup>significantly
inhibited the degradation of NDMA. However, the NDMA degradation had been less affected
by SO<inf>4</inf><sup>2-</sup>, HCO<inf>3</inf><sup>-</sup>, and nature organic matter
(NOM) existing in the solution. © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Palladium
Controlled terms:Acrylic monomers - Atomic emission spectroscopy - Bimetals - Chemicals
removal (water treatment) - Fibers - Impurities - Inductively coupled plasma - Iron -
Irradiation - Polypropylenes - Reaction kinetics - Scanning electron microscopy - X ray
photoelectron spectroscopy
Uncontrolled terms:Bimetallic composites - Catalytic - Catalytic degradation -
Coordination - Inductively coupled plasma atomic emission spectrometry - N-
nitrosodimethylamine - Polypropylene fiber - Pseudo-first order reactions
Classification code:531 Metallurgy and Metallography - 545.1 Iron - 547.1 Precious
Metals - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals
- 804 Chemical Products Generally - 804.1 Organic Compounds - 815.1.1 Organic Polymers
- 932.3 Plasma Physics - 951 Materials Science
Numerical data indexing:Percentage 2.00e+01%
DOI:10.13227/j.hjkx.201701194
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 5>
Accession number:20174404325603
Title:Optimization of Promoter and Support for Co-based/zeolites Catalysts in Catalytic
Reduction of NO<inf>x</inf>by CH<inf>4</inf>
Authors:Pan, Hua (1); Jian, Yan-Fei (1); Chen, Ning-Na (1); Liu, Hong-Xia (1); He, Chi
(1); He, Ya-Fei (2)
Author affiliation:(1) Department of Environmental Science and Engineering, School of
Energy and Power Engineering, Xi'an Jiaotong University, Xi'an; 710049, China; (2) Qiyuan
(Xi'an) Dae Young Environmental Protection Technology Co., Ltd., Xi'an; 710018, China
Corresponding author:He, Chi(chi_he@xjtu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:3085-3094
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Catalytic behavior of Co-based/zeolites catalysts was investigated in
NO<inf>x</inf>reduction by CH<inf>4</inf>. Optimization of promoter and support was
investigated by catalytic tests, and the relationship between catalytic activity and
catalyst structure was illustrated by catalyst characterization. Co-Fe/SAPO-34 exhibited
the highest activity among various Co-base/zeolites catalysts. The maximum conversion of
NO<inf>x</inf>with 52.7% was obtained on Co-Fe/SAPO-34 at 450℃. The inhibition of
activity of Fe/zeolites became severe in the presence of SO<inf>2</inf>, CO<inf>2</inf>,
and H<inf>2</inf>O. CO<inf>2</inf>exerted virtually no effect on the SCR activity of Co-
Fe/zeolites. The inhibition of NO<inf>x</inf>conversion by H<inf>2</inf>O was reversible
for Co-Fe/zeolites catalysts. Cobalt species were mainly present in CoO and Co(OH)
<inf>2</inf>states in Co-Fe/SAPO-34. Co<inf>3</inf>O<inf>4</inf>and Co(OH)
<inf>2</inf>were the main cobalt species of Co-Fe/ZSM-5, while CoO,
CoAl<inf>2</inf>O<inf>4</inf>and Co<inf>3</inf>O<inf>4</inf>might be present in Co-
Fe/Beta. The ratio of Fe<sup>2+</sup>/Fe<sup>3+</sup>in the surface layer of Co-
Fe/zeolites decreased in the order of Co-Fe/ZSM-5 (3.98)>Co-Fe/SAPO-34 (0.52)>Co-
Fe/Beta (0.43). The active states of cobalt species and suitable ratio of
Fe<sup>2+</sup>/Fe<sup>3+</sup>were important for the activity of Co-Fe/zeolites in
CH<inf>4</inf>-SCR. CH<inf>4</inf>-SCR over Co-Fe/zeolite catalysts started with the
adsorption of NO and CH<inf>4</inf>on Br∅nsted acid sites of the zeolite to produce
NO<sup>+</sup>and carbon-containing species (-C=O and -COO) in the presence of oxygen,
respectively. Subsequently, the important intermediates of nitrate species were generated
from NO<sup>+</sup>at the active sites. Finally, nitrate species reacted with carbon-
containing species to form N<inf>2</inf>and CO<inf>2</inf>. © 2017, Science Press.
All right reserved.
Number of references:31
Main heading:Cobalt compounds
Controlled terms:Aluminum compounds - Bromine compounds - Carbon dioxide - Catalyst
activity - Catalysts - Cobalt - Iron compounds - Nitrates - Nitrogen oxides - Reduction
- Supports
Uncontrolled terms:Adsorption of no - Carbon-containing species - Catalyst
characterization - Catalyst structures - Catalytic behavior - Catalytic reduction - Co
based - Promoter
Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline
Earth Metals - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial
Chemicals - 804 Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Percentage 5.27e+01%
DOI:10.13227/j.hjkx.201610195
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 6>
Accession number:20174404325983
Title:Effects of Goethite, Magnetite and Gypsum on the Anaerobic Degradation of 2,4-
Dichlorophenol
Authors:Kong, Dian-Chao (1); Zhou, Yue-Fei (1); Chen, Tian-Hu (1); Wang, Jin (1); Li, Bi
(1)
Author affiliation:(1) Laboratory of Nanominerals and Environmental Materials, School of
Resources and Environmental Engineering, Hefei University of Technology, Hefei; 230009,
China
Corresponding author:Zhou, Yue-Fei(alphazhou@hfut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2875-2882
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:2,4-dichlorophenol (2,4-DCP), a highly toxic and refractory organic compound,
was commonly used in pesticide production and thus widely distributed in water and soil.
Goethite, magnetite and gypsum were added into the anaerobic system which simulated the
natural anaerobic process to evaluate their effects on the anaerobic degradation of 2,4-
DCP. It indicated that goethite, magnetite and gypsum had no appreciable adsorption
ability toward 2,4-DCP under anaerobic condition. Mass balance analysis showed that only
the transformation of 2,4-DCP to 4-chlorophenol (4-CP) occurred in all experimental
groups. The addition of sodium acetate doubled the reductive dechlorination rate of 2,4-
DCP in comparison with the groups without exogenous carbon source. The reductive
dechlorination rate of 2,4-DCP was enhanced by the addition of goethite and magnetite,
which was caused by the improved metabolic activity of dechlorination bacteria that
played an important role in the anaerobic degradation of 2,4-DCP. Gypsum greatly
inhibited or even stopped the degradation process of 2,4-DCP through restraining the
growth and activity of dechlorination bacteria. This study will shed light on the
migration and degradation of refractory chlorinated organic contaminants in anaerobic
sedimentary environment, and the treatment of such matters in environmental technology.
© 2017, Science Press. All right reserved.
Number of references:39
Main heading:Dechlorination
Controlled terms:Bacteria - Bioassay - Biodegradation - Carbon - Environmental technology
- Gypsum - Magnetite - Refractory materials
Uncontrolled terms:2 ,4 dichlorophenol(2 ,4 dcp) - 4-chlorophenol (4-cp) - Anaerobic
degradation - Chlorinated organic contaminant - Goethite - Reductive dechlorination -
Refractory organic compounds - Sedimentary environment
Classification code:454 Environmental Engineering - 461.6 Medicine and Pharmacology -
461.8 Biotechnology - 482.2 Minerals - 802.2 Chemical Reactions - 804 Chemical
Products Generally - 812.2 Refractories
DOI:10.13227/j.hjkx.201608169
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 7>
Accession number:20174404325963
Title:Composition Characteristics and Sources Apportionment of Lanthanoid in
PM<inf>2.5</inf>of Quanzhou
Authors:Zhang, Yun-Feng (1, 2); Yu, Rui-Lian (1); Hu, Gong-Ren (1); Sun, Jing-Wei (1, 2);
Xu, Wen-Zhi (3); Zhang, Zong-Wei (1)
Author affiliation:(1) Department of Environmental Science and Engineering, Huaqiao
University, Xiamen; 361021, China; (2) School of Resources and Environmental Science,
Quanzhou Normal University, Quanzhou; 362000, China; (3) Quanzhou Environmental
Supervising Detachment, Quanzhou; 362000, China
Corresponding author:Hu, Gong-Ren(grhu@hqu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2698-2706
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Samples of PM<inf>2.5</inf>were collected from 5 sites in Quanzhou in March,
April and July, 2014. The concentrations of lanthanoid and other trace metals in the
PM<inf>2.5</inf>were determined by Inductively Coupled Plasma Mass Spectrometry (ICP-MS).
The total lanthanoid concentration (∑Loid), the ratio of light-lanthanoid (L Loid,
including, La, Ce, Pr, Nd, Sm and Eu) to heavy-lanthanoid (H Loid, including Gd, Tb, Dy,
Ho, Er, Tm, Yb and Lu) in PM<inf>2.5</inf>were 2.490-5.708 ng·m<sup>-3</sup>
(65.682-126.529 μg·g<sup>-1</sup>) and 12.086-14.319, respectively. The
distribution pattern of Loid in PM<inf>2.5</inf>was also evaluated in this study. All
PM<inf>2.5</inf>samples showed similar distribution pattern with local topsoil. And
positive Ce and negative Eu anomalies were observed in PM<inf>2.5</inf>. La-Ce-V plots
and chemical mass balance (CMB) model were used for source identification and
apportionment of PM<inf>2.5</inf>in Quanzhou. The CMB model was used to identify four
main sources: urban fugitive dust, coal combustion, vehicle exhaust and waste
incineration emission which had a contribution of 18.9%, 10.9%, 30.6% and 30.2%,
respectively. © 2017, Science Press. All right reserved.
Number of references:37
Main heading:Waste incineration
Controlled terms:Cerium - Cerium alloys - Coal combustion - Coal dust - Europium -
Incineration - Inductively coupled plasma mass spectrometry - Lanthanum alloys - Mass
spectrometry - Solid wastes - Ternary alloys - Trace elements - Vanadium alloys
Uncontrolled terms:Chemical mass balance - Lanthanoid - PM2.5 - Quanzhou - Source
apportionment
Classification code:452.4 Industrial Wastes Treatment and Disposal - 503 Mines and
Mining, Coal - 521 Fuel Combustion and Flame Research - 524 Solid Fuels - 543.6
Vanadium and Alloys - 547.2 Rare Earth Metals - 801 Chemistry
Numerical data indexing:Percentage 1.09e+01%, Percentage 1.89e+01%, Percentage 3.02e+01%,
Percentage 3.06e+01%
DOI:10.13227/j.hjkx.201612105
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 8>
Accession number:20174404325981
Title:MgO-Biochar for the Adsorption of Phosphate in Water
Authors:Wang, Bin-Bin (1); Lin, Jing-Dong (1); Wan, Shun-Li (1); He, Feng (1)
Author affiliation:(1) College of Environment, Zhejiang University of Technology,
Hangzhou; 310014, China
Corresponding author:He, Feng(fenghe@zjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2859-2867
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A novel composite material MgO-biochar (MgO-BC) with the peanut shells as the
precursors was successfully fabricated by loading magnesium oxide (MgO) on the surface of
biochar (BC) at high temperature and in oxygen-limited atmosphere. The adsorption
characteristics of the resultant adsorbent toward phosphate from aqueous solution were
investigated by evaluating the influences of pH, contact time and coexisting ions. The
results showed that the best phosphate adsorption onto MgO-BC happened in the pH range of
7-9, and strong acidic or basic media was unfavorable to the phosphate adsorption.
Phosphate adsorption process could reach equilibrium within 540 min, and the kinetics
curve could be well fitted by both pseudo-first and pseudo-second models. The related
coefficients were 97.3% and 99.0%. MgO-BC exhibited highly selective capacity toward
phosphate in the presence of competing Cl<sup>-</sup>, HCO<inf>3</inf><sup>-</sup>and
NO<inf>3</inf><sup>-</sup>at 10 times higher concentration than the phosphate
concentration. In addition, phosphate adsorption onto MgO-BC could be described
satisfactorily by Langmuir model with a fitting coefficient of higher than 99%, and the
maximal adsorption capacity calculated by Langmuir equation was 138.07 mg·g<sup>-
1</sup>. The adsorption capacity of phosphate by MgO-BC was much higher than the
unmodified BC and other biochar-based sorbents. Furthermore, the composite material after
the adsorption of phosphate could also be used as a fertilizer into the soil. It achieved
the reuse of the discarded phosphate. All the results validated that MgO-BC has a wide
application prospect for the phosphate cleanup from the actual wastewater. © 2017,
Science Press. All right reserved.
Number of references:25
Main heading:Magnesium compounds
Controlled terms:Adsorption - Applications - Composite materials - Magnesia - Magnesium -
Phosphates - Solutions
Uncontrolled terms:Adsorption capacities - Adsorption characteristic - Application
prospect - Bio chars - Fitting coefficient - Phosphate adsorption - Phosphate
concentration - Related coefficients
Classification code:451.2 Air Pollution Control - 542.2 Magnesium and Alloys - 802.3
Chemical Operations - 804.2 Inorganic Compounds - 951 Materials Science
Numerical data indexing:Percentage 9.73e+01%, Percentage 9.90e+01%, Time 3.24e+04s
DOI:10.13227/j.hjkx.201611129
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 9>
Accession number:20174404325958
Title:Sources and Characteristics of Regional Background PM<inf>1</inf>in North China
During the Autumn and Winter Polluted Period
Authors:Zhang, Zhou-Xiang (1); Zhang, Yang-Mei (1); Zhang, Xiao-Ye (1, 3); Wang, Ya-Qiang
(1); Shen, Xiao-Jing (1); Sun, Jun-Ying (1); Zhou, Huai-Gang (2)
Author affiliation:(1) State Key Laboratory of Severe Weather & Key Laboratory of
Atmospheric Chemistry of Chinese Meteorological Agent, Chinese Academy of Meteorological
Sciences, Beijing; 100081, China; (2) Shangdianzi Regional Air Background Station,
Beijing; 101507, China; (3) Center for Excellence in Regional Atmospheric Environment,
Chinese Academy of Sciences, Beijing; 100081, China
Corresponding author:Zhang, Yang-Mei(ymzhang@camscma.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2647-2655
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The campaign of investigating the chemical compositions and particle size
distributions of NR-PM<inf>1</inf>(non-refractory PM<inf>1</inf>) was conducted by using
a High Resolution Time of Flight Aerosol Mass Spectrometer (HR-ToF-AMS) at the
Shangdianzi (SDZ) regional atmospheric background site (117.07°E, 40.39°N),
northeast of Beijing, from October 17th 2015 to January 27th 2016. The results showed
that organics was the main component of PM<inf>1</inf>, and the proportion of nitrate was
higher than that of sulfate in autumn and winter. The mean mass-resolved size
distributions for the main components displayed accumulation mode. The wider organic peak
shape and larger nitrate peak size indicated that the organics contributed to both small
and large particles at the beginning of the particle formation, growth and aging
processes, while most of nitrate particles preferred to grow into large particles during
the aging process. The ratios of elements between OM and OC, O/C and H/C were calculated
as 1.91, 0.58 and 1.58 respectively. The slope of Van Krevelen diagram of organic
aerosols during polluted episode was -0.21, whose oxidation state was higher than those
of other city sites. Nitrate was the major contributor of NR-PM<inf>1</inf>during the
polluted period, while organics was significantly higher than that during clean period.
The results of back trajectories analysis demonstrated that the air masses were complex
during the pollution episode. The northwest wind from central Inner Mongolia and Siberia
dominated the clean episodes, which was conducive to the spread of pollutants. ©
2017, Science Press. All right reserved.
Number of references:36
Main heading:Nitrates
Controlled terms:Aerosols - Particle size - Pollution - Size distribution - Sulfur
compounds
Uncontrolled terms:Accumulation modes - Back trajectories - Chemical compositions - Haze
- Organic aerosol - Particle formations - Pollution episodes - Regional background
Classification code:804.2 Inorganic Compounds - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201612104
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 10>
Accession number:20174404325964
Title:Pollution Characteristics and Health Risk Assessment of Hazardous Air Pollutants in
the Surroundings of Three Petrochemical Industries in Northwest China
Authors:Xu, Ya-Xuan (1); Li, Xiao-Min (1); Yu, Hua-Tong (2); Dong, Lin-Yan (1); Zhao,
Yu-Ting (1); Yao, Yi-Han (1); Zou, Guang-Xun (1); Zhang, Xin-Min (1)
Author affiliation:(1) Chinese Research Academy of Environmental Sciences, Beijing;
100012, China; (2) China Environmental Resources Technology Co., Ltd., Beijing; 100012,
China
Corresponding author:Li, Xiao-Min(lxm1919@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2707-2717
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The samples in the surroundings of three representative petrochemical industries
in Northwest China were collected by summa canister/adsorption using activated
carbon/glass fiber filter, and then they were analyzed for 13 hazardous air pollutants by
gas chromatography-mass spectrometry/gas chromatograph/high performance liquid
chromatography. The pollution characteristics and human health risk of hazardous air
pollutants were discussed. The results showed that 8 hazardous air pollutants existed in
the surroundings of all petrochemical industries. The detection frequency for 8 hazardous
air pollutants exceeded 80%. The ranges of the average concentrations of benzene series
(BTEX), 1,3-butadiene, 1,4-dichlorobenzene, benzo[a]pyrene were 48.01-182.75
μg·m<sup>-3</sup>, 6.28-7.95 μg·m<sup>-3</sup>, 5.53-12.62
μg·m<sup>-3</sup>and 7.03-36.08 ng·m<sup>-3</sup>. Daily average
concentration of benzo[a]pyrene was 1.8-13.4 times higher than the limit of national
standard level-I, and those of benzene, toluene and xylene were also over their limits of
standard to different degrees. The non-carcinogenic risks of benzo[a]pyrene and 1,3-
butadiene were beyond acceptable levels around the three petrochemical industries in
Northwest China. Meanwhile, the non-carcinogenic health impact of benzene was appreciable
on the exposed population of Lanzhou petrochemical industrial area. The carcinogenic
risks of benzene, ethylbenzene, styrene, 1,3-butadiene, 1,4-dichlorobenzene and benzo[a]
pyrene were beyond acceptable levels. At the same time, the carcinogenic risks of
benzene, 1,3-butadiene and 1,4-dichlorobenzene were significantly higher than their
acceptable ranges recommended by US EPA. © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Risk assessment
Controlled terms:Activated carbon - Air pollution - Benzene - Carbon - Chromatography -
Gas chromatography - Hazardous materials - Hazards - Health - Health risks - Liquid
chromatography - Mass spectrometry - Petrochemicals - Pollution - Pyrene - Styrene -
Volatile organic compounds
Uncontrolled terms:1 ,4-dichlorobenzene - Average concentration - Carcinogenic risk -
Detection frequency - Gas chromatography-mass spectrometry - Hazardous air pollutants -
NorthWest China - Petrochemical industry
Classification code:451 Air Pollution - 461.6 Medicine and Pharmacology - 461.7 Health
Care - 801 Chemistry - 802.3 Chemical Operations - 804 Chemical Products Generally -
804.1 Organic Compounds - 914.1 Accidents and Accident Prevention
Numerical data indexing:Percentage 8.00e+01%
DOI:10.13227/j.hjkx.201604099
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 11>
Accession number:20174404325989
Title:Efficient and Stable Operation of Shortcut Nitrification by Entrapping Ammonia
Oxidizing Bacteria
Authors:Yu, Meng-Yu (1); Liu, Yi (1); Tian, Yu-Bin (1); Shi, Huan (1); Xu, Fu (1); Yang,
Hong (1)
Author affiliation:(1) Key Laboratory for Water Quality Science and Water Environment
Recovery Engineering, Beijing University of Technology, Beijing; 100124, China
Corresponding author:Yang, Hong(yhyankee@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2925-2930
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to improve the efficiency of shortcut nitrification by entrapping
ammonia oxidizing bacteria, the technique of ammonia oxidizing bacteria (AOB) enrichment
culture was studied. The continuous operation method was used to inhibit the growth of
nitrite-oxidizing bacteria (NOB) by free ammonia, at the same time, the NOB was gradually
washed out of the system through the technology of sludge discharge. Polyvinyl alcohol
(PVA) was used as the embedding material to immobilize the ammonia oxidizing bacteria
after enrichment culture. The embedding rate of the reactor was 8%. The ammonia oxidation
rate was increased by improving ammonia nitrogen loading in the continuous operation
mode. The results showed that the ammonia oxidation rate (NH<inf>4</inf><sup>+</sup>-
N/VSS) was as high as 2.028 g·(g·d)<sup>-1</sup>and the nitrite nitrogen
accumulation rate was stabilized at more than 90%. High-throughput sequencing analysis
was conducted on the bacterial community composition before and after enrichment culture,
and the experimental result indicated that the culture diversity of raw sludge was
larger. Nitrosomonas and Nitrospirae, which have nitrification function, accounted for
0.24% and 2.7%, respectively. The diversity of the activated sludge decreased
significantly after the enrichment culture, Nitrosomonas (18%) became the dominant
bacteria whereas Nitrospira occupied only 0.02%. After he embedding of ammonia oxidizing
bacteria, the shortcut nitrification was realized rapidly. Finally, the shortcut
nitrification rate reached 50 mg·(L·h)<sup>-1</sup>and the nitrite nitrogen
accumulation was above 90%. © 2017, Science Press. All right reserved.
Number of references:21
Main heading:Bacteria
Controlled terms:Ammonia - Bacteriology - Nitrification - Nitrogen - Radioactive waste
vitrification - Throughput
Uncontrolled terms:Ammonia oxidizing bacteria - Bacterial community composition -
Continuous operation - Enrichment culture - High-throughput sequencing - Nitrite-
oxidizing bacteria - Poly (vinyl alcohol) (PVA) - Shortcut nitrification
Classification code:802.2 Chemical Reactions - 804 Chemical Products Generally - 804.2
Inorganic Compounds
Numerical data indexing:Percentage 1.80e+01%, Percentage 2.00e-02%, Percentage 2.40e-01%,
Percentage 2.70e+00%, Percentage 8.00e+00%, Percentage 9.00e+01%
DOI:10.13227/j.hjkx.201701089
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 12>
Accession number:20174404325997
Title:Response of Soil Respiration and Heterotrophic Respiration to Returning of Straw
and Biochar in Rape-Maize Rotation Systems
Authors:Tian, Dong (1); Gao, Ming (1); Huang, Rong (1); Lü, Sheng (1); Xu, Chang (2)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Municipal Tobacco Company, Chongqing; 400023,
China
Corresponding author:Gao, Ming(gaoming@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2988-2999
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Soil respiration has become the main way of farmland ecosystem carbon emissions.
Soil respiration and its responses to soil moisture and soil temperature under straw and
biochar returning were investigated. Combined soil CO<inf>2</inf>fluxes system (ACE-
002/OPZ/SC) with the method of root exclusion, this study conducted a long-term field
experiment in the national monitor station of soil fertility and fertilizer efficiency of
purple soils. The total soil respiration and heterotrophic respiration rate and the soil
hydrothermal factors were measured during the growth period of rape and maize in rape-
maize rotation systems, and the difference between total soil respiration and
heterotrophic respiration was calculated as the contribution of root respiration to soil
respiration. There were five treatments including CK (no organic material), CS (straw),
CSD (straw+microorganism), BC (biochar), CSBC (50% straw+50% biochar), which were
replicated three times. The results showed that straw and biochar returning significantly
affected the seasonal variations and the peak of soil respiration. In addition to BC
treatment, other treatments promoted soil respiration and cumulative emissions of soil
CO<inf>2</inf>. Soil respiration rate was significantly different under different
treatments, the changes in soil respiration rates showed a single peak curve under all
treatments, the seasonal variations in soil respiration rates under rape was 0.12-2.29
μmol·(m<sup>2</sup>·s)<sup>-1</sup>, displaying an order of
CS>CSD>CSBC>CK>BC. Soil respiration was pretty complex in maize season, the
seasonal variation in soil respiration rates under rape was 1.02-15.32 μmol·
(m<sup>2</sup>·s)<sup>-1</sup>, displaying an order of
CSD>CS>CSBC>CK>BC, the changes in soil respiration rate presented a double
peak curve under CS and CSD and CSBC treatments and a single peak curve under BC and CK
treatments. Heterotrophic respiration could explain 86.50%-93.94% of seasonal variations
in the soil total respiration, and the contribution of root respiration (26.49%-32.86%)
was significantly lower than CK treatment (53.65%). Straw and biochar returning did not
change soil temperature and soil moisture. Soil temperature at 5 cm depth had significant
effects on the change dynamics of soil respiration rates, but soil moisture did not. Soil
temperature at 5 cm depth could explain 82%-94% of the variations in soil respiration.
The values of temperature sensitivity coefficient changed from 3.28 to 4.47. Compared
with CK treatment, Q<inf>10</inf>of CS, CSD and CSBC decreased by 26.62%, 18.12%, 20.58%,
respectively, while BC increased by 12.53%. There was no synergistic effect between soil
temperature and soil moisture on soil respiration, the dynamic changes of soil
respiration rate could be simulated by single factor index function of soil temperature.
Overall, soil respiration was significantly promoted by returning of straw, straw
+microorganism, straw+biochar, while it was inhibited by returning of biochar. ©
2017, Science Press. All right reserved.
Number of references:46
Main heading:Soils
Controlled terms:Carbon - Carbon dioxide - Ecosystems - Fertilizers - Forestry -
Microorganisms - Moisture - Rotation - Soil moisture - Temperature
Uncontrolled terms:Bio chars - Heterotrophic respiration - Long-term field experiments -
Root exclusion method - Root respiration - Soil respiration - Soil respiration rates -
Temperature sensitivity
Classification code:454.3 Ecology and Ecosystems - 461.9 Biology - 483.1 Soils and
Soil Mechanics - 641.1 Thermodynamics - 804 Chemical Products Generally - 804.2
Inorganic Compounds - 931.1 Mechanics
Numerical data indexing:Percentage 1.25e+01%, Percentage 1.81e+01%, Percentage 2.06e+01%,
Percentage 2.65e+01% to 3.29e+01%, Percentage 2.66e+01%, Percentage 5.00e+01%, Percentage
5.36e+01%, Percentage 8.20e+01% to 9.40e+01%, Percentage 8.65e+01% to 9.39e+01%, Size
5.00e-02m
DOI:10.13227/j.hjkx.201612188
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 13>
Accession number:20174404325972
Title:Spatial Distribution Characteristics and Potential Ecological Risk of Antimony and
Selected Heavy Metals in Sediments of Duliujiang River
Authors:Ning, Zeng-Ping (1); Xiao, Qing-Xiang (1, 2); Lan, Xiao-Long (1, 2); Liu, Yi-
Zhang (1); Xiao, Tang-Fu (1, 3); Zhao, Yan-Long (1, 4); Wu, Shi-Liang (4)
Author affiliation:(1) State Key Laboratory of Environmental Geochemistry, Institute of
Geochemistry, Chinese Academy of Sciences, Guiyang; 550081, China; (2) University of
Chinese Academy of Sciences, Beijing; 100049, China; (3) Innovation Center and Key
Laboratory of Water Safety & Protection in the Pearl River Delta, Ministry of
Education, Guangzhou University, Guangzhou; 510006, China; (4) Pearl River Water
Environment Monitoring Center, Guangzhou; 510611, China
Corresponding author:Xiao, Tang-Fu(xiaotangfu@vip.gyig.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2784-2792
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to investigate the spatial distribution characteristics of Sb and
selected heavy metals, and to discriminate their sources and potential ecological risks
in surface sediments of the Duliujiang river, a total of 62 surface sediment samples were
collected in this study. Total contents of Sb, As, Cd, Co, Cr, Cu, Mo, Ni, Pb, Tl, Zn and
Fe in these samples were measured by inductively coupled plasma mass spectrometry (ICP-
MS) and the inductive plasma optical emission spectrometry (ICP-OES). Principal component
analysis (PCA) and Pearson correlation analysis were used to deduce the potential sources
of these elements. Geo-accumulation index (I<inf>geo</inf>), enrichment factor (EF) and
Hakanson's potential ecological risk index (E<inf>r</inf><sup>i</sup>and RI) were
calculated to evaluate the pollution degree of heavy metals in sediments. The results
indicated that the contents of heavy metals in sediments were impacted by human
activities to different extents, and the Duliujiang River was significantly contaminated
by Sb. The contents of Sb in sediments reached up to 7080 mg·kg<sup>-1</sup>, and
gradually decreased from upstream to downstream, while the contents of As, Cd, Co, Cr,
Cu, Mo, Ni, Pb, Tl and Zn varied indistinctively. The PCA results showed that the
cumulative proportion of the first two components accounted for 77.67% of the total
variables, suggesting that two major sources of Sb and other heavy metals were
mining/smelting industry and natural sources. The calculated I<inf>geo</inf>and EFs also
showed that the surface sediments of the Duliujiang River were majorly polluted by Sb,
followed by As and Co, lightly contaminated with Co, Cu, Mo, Ni, Pb and Tl, and
uncontaminated with Cr. The ecological hazards (E<inf>r</inf><sup>i</sup>) for each
metals in a descending order were Sb>Cd>As>Co>Ni>Pb>Cu>Zn>Cr. The
comprehensive index of potential ecological risks (RI) for heavy metals indicated that
58.1% of the 62 sediments samples had more than moderate ecological risks, and the sites
with high RIs were generally located around Sb mining area and the downstream of the
Baluo River. In addition, the E<inf>r</inf><sup>i</sup>of Sb was a predominant component
of RI, indicating that the Duliujiang River is an area with extremely high potential
ecological risk of Sb. © 2017, Science Press. All right reserved.
Number of references:29
Main heading:River pollution
Controlled terms:Cadmium - Copper - Correlation methods - Ecology - Erbium - Heavy metals
- Inductively coupled plasma mass spectrometry - Lead - Mass spectrometry - Nickel -
Optical emission spectroscopy - Principal component analysis - Rivers - Sediments -
Spatial distribution - Spectrometry - Surficial sediments - Zinc
Uncontrolled terms:Comprehensive indices - Distribution characteristics - Ecological
risks - Geo-accumulation index - Inductively coupled plasma mass spectrometries (ICPMS) -
Optical emission spectrometry - Pearson correlation analysis - Potential ecological risk
Classification code:453 Water Pollution - 454.3 Ecology and Ecosystems - 483 Soil
Mechanics and Foundations - 531 Metallurgy and Metallography - 544.1 Copper - 546.1
Lead and Alloys - 546.3 Zinc and Alloys - 547.2 Rare Earth Metals - 548.1 Nickel -
549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 801
Chemistry - 921 Mathematics - 922.2 Mathematical Statistics - 941.4 Optical Variables
Measurements
Numerical data indexing:Percentage 5.81e+01%, Percentage 7.77e+01%
DOI:10.13227/j.hjkx.201701138
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 14>
Accession number:20174404326004
Title:Subcellular Distribution and Chemical Forms of Heavy Metals in Three Types of
Compositae Plants from Lead-Zinc Tailings Area
Authors:Zhu, Guang-Xu (1); Xiao, Hua-Yun (1); Guo, Qing-Jun (2); Zhang, Zhong-Yi (1, 3);
Yang, Xi (2, 3); Kong, Jing (2, 3)
Author affiliation:(1) State Key Laboratory of Environmental Geochemistry, Institute of
Geochemistry, Chinese Academy of Sciences, Guiyang; 550081, China; (2) Center for
Environmental Remediation, Institute of Geographic Sciences and Natural Resources
Research, Chinese Academy of Sciences, Beijing; 100101, China; (3) University of Chinese
Academy of Sciences, Beijing; 100049, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:3054-3060
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Field investigation on the content of heavy metals in soils and three types of
widely distributing compositae plants (Artemisia lavandulaefolia, Ageratum conyzoides L.,
Crassocephalum crepidioides) in lead-zinc tailings farmland of Yangshuo, Guangxi Zhuang
Autonomous Region was carried out, and the differential centrifugation technique and
sequential chemical extraction method were used to study the subcellular distribution and
chemical forms of heavy metals in these plants. The results indicated that the soil in
the tailings farmland was highly contaminated by Cd, Pb and Zn, and their concentrations
were 37.7, 5.7 and 8.9 times higher than their respective values of national standard for
soil environment quality (GradeI). The contents of Cd, Pb and Zn in the analyzed plants
exceeded the normal ranges. Ageratum conyzoides L. and Crassocephalum crepidioides showed
strong capability in tolerance, accumulation and transport of Cd, and they could be used
as pioneer plants for Cd-phytoremediation in study area and some related areas. In
addition, Cd concentrations in the stem and leave of Crassocephalum crepidioides were
159.6 mg·kg<sup>-1</sup>and 219.5 mg·kg<sup>-1</sup>, respectively, which
exceeded the threshold of Cd hyperaccumulator. Thus, Crassocephalum crepidioides can be
regarded as a Cd-hyperaccumulator. Majority of total Cd, Pb and Zn were found in soluble
fraction and cell wall in the plants, while only a small quantity were distributed in
organelles. As for chemical forms distribution, Cd, Zn and Pb predominated NaCl-, HAC-,
and HCl-extractable forms both in roots and shoots of the plants. Therefore, cell wall
binding, vacuolar compartmentalization and distribution mainly in lower active chemical
forms were supposed to be the main mechanisms for tolerance to heavy metals in the study
plants. A difference of Cd subcellular distribution and its chemical forms in the three
Compositae plants was observed. Compared with the shoot of Artemisia lavandulaefolia,
more Cd was located in the vacuolus and cellular soluble parts in Ageratum conyzoides L.
and Crassocephalum crepidioides. Moreover, the proportion of active chemical Cd in the
shoots was lower than that in the roots. These results showed that the subcellular
distribution and chemical forms of Cd were related to the plant species, and also
indicated Ageratum conyzoides L. and Crassocephalum crepidioides were likely to possess a
higher tolerance and accumulation of Cd. © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Pollution
Controlled terms:Bioremediation - Cadmium - Extraction - Farms - Heavy metals - Lead -
Plants (botany) - Soil pollution - Soils - Zinc
Uncontrolled terms:Chemical forms - Compositae - Heavy metal pollution - Lead-zinc
tailing - Subcellular distribution
Classification code:454.2 Environmental Impact and Protection - 483.1 Soils and Soil
Mechanics - 531 Metallurgy and Metallography - 546.1 Lead and Alloys - 546.3 Zinc and
Alloys - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals -
802.3 Chemical Operations - 821 Agricultural Equipment and Methods; Vegetation and Pest
Control
DOI:10.13227/j.hjkx.201612249
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 15>
Accession number:20174404325957
Title:Analysis of Spatio-temporal Distribution and Variation Characteristics of Aerosol
Optical Depth over the Northwest of China by MODIS C6 Product
Authors:Zhao, Shi-Wei (1, 2, 3, 4); Gao, Xiao-Qing (1, 2)
Author affiliation:(1) Key Laboratory of Land Surface Process and Climate Change in Cold
and Arid Regions, Chinese Academy of Sciences, Lanzhou; 730000, China; (2) Northwest
Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou; 730000,
China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4) Mailbox
5111, Beijing; 100094, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2637-2646
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This work compared the collection 6 MODIS aerosol optical depth products with
sun photometer data from AERONET, and evaluated the applicability of C6 merged data in
the northwest of China. The spatio-temporal variation characteristics and influencing
factors of AOD over northwest of China were analyzed by MODIS/AQUA C6 MYD08-M3 products
from 2006 to 2015, and the results showed that Southern Xinjiang and Guanzhong region of
Shanxi province had relatively high AOD, whereas the south of Qinghai and Gansu province
had low values; Junggar Basin was the incremental area of AOD for the first 5 years and
second 5 years, whereas converse result existed in Qaidam Basin and Hetao area.
Temporally, the yearly mean AOD ranged from 0.18 to 0.22, and the declined trend occurred
in 2011, and the annual decrease rate was about 0.32%; Because of different intensity and
frequency of dust weather, the south of Xinjiang showed a significant interannual
variation characteristic; East of the northwest displayed an obviously declining trend
from 2011 to 2015, and the yearly mean decrease was about 1.1%. The AOD in north of
Xinjiang and Qinghai-Tibet remained stable. The seasonal changes of AOD among different
areas over the northwest had the same trend, all gradually declined from spring to
autumn, and increased in winter. © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Radiometers
Controlled terms:Aerosols - Atmospheric aerosols - Optical properties
Uncontrolled terms:AERONET - Aerosol optical depths - MODIS - Northwestern China -
Spatiotemporal characteristics
Classification code:443.1 Atmospheric Properties - 741.1 Light/Optics - 944.7
Radiation Measuring Instruments
Numerical data indexing:Age 5.00e+00yr, Percentage 1.10e+00%
DOI:10.13227/j.hjkx.201611164
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 16>
Accession number:20174404326003
Title:Bioaccumulation of Heavy Metals in Twigs and Leaves of Abies fabri at Mount Gongga
in China: A Comparison Study Between 1999 and 2014
Authors:Li, Fen (1, 2); Wang, Xun (1, 2); Luo, Ji (3); Yuan, Wei (1, 2); Yu, Zi-Heng (1,
4); Shang, Li-Hai (1)
Author affiliation:(1) State Key Laboratory of Environmental Geochemistry, Institute of
Geochemistry, Chinese Academy of Sciences, Guiyang; 550081, China; (2) University of
Chinese Academy of Sciences, Beijing; 100049, China; (3) Key Laboratory of Mountain
Surface Processes and Ecological Regulation, Institute of Mountain Hazards and
Environment, Chinese Academy of Sciences & Ministry of Water Conservancy, Chengdu;
610041, China; (4) Key Laboratory for Information System of Mountainous Area and
Protection of Ecological Environment of Guizhou Province, Guizhou Normal University,
Guiyang; 550001, China
Corresponding author:Shang, Li-Hai(shanglihai@vip.skleg.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:3045-3053
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The rapid economy growth led to the environmental carrying capacity reaching the
maximum level. Given that the time changing trend of heavy metal pollution in the remote
forest ecosystems has rarely been reported, we reported the differences of Pb, Hg, Cd,
As, Cr, Mn, Cu, Zn and bioaccumulation in twigs and leaves of fir (Abies fabri) between
samples collected in 1999 and 2014 at the Mt. Gongga, which was located at eastern Tibet
Plateau. Our results suggested that the concentrations of Pb, Hg, As, Cd, Mn and Cu in
the samples collected in 1999 were significantly higher than those collected in 2014,
while the concentrations of Cr, Zn and Ba in samples collected in 2014 were higher than
those collected in 1999. The correlation analysis indicated that concentrations of Pb,
Hg, Cr, As, Cd, Mn, Cu, Zn and Ba in leaves were positive correlated to the age of the
leaves. In addition, Hg was apt to enrich in leaves while the other metals were prone to
enrich in twigs. According to the multiple linear regression result, about 70.6% of Hg in
leaves and twigs was from air, while the other heavy metals, including Pb, Cr, As, Cd,
Cu, Zn, and Ba, were mainly from soil (42.3%-92.2%). These results suggest that there may
be different accumulation mechanisms in forest ecosystems between Hg and the other heavy
metals. © 2017, Science Press. All right reserved.
Number of references:42
Main heading:Copper
Controlled terms:Arsenic - Bioaccumulation - Biochemistry - Cadmium - Chromium - Ecology
- Ecosystems - Forestry - Heavy metals - Lead - Linear regression - Manganese - Mercury
(metal) - Pollution - Zinc
Uncontrolled terms:Abies fabri - Accumulation mechanisms - Correlation analysis -
Environmental carrying capacities - Forest ecosystem - Gongga Mountain - Heavy metal
pollution - Multiple linear regressions
Classification code:454.3 Ecology and Ecosystems - 461.9 Biology - 531 Metallurgy and
Metallography - 543.1 Chromium and Alloys - 543.2 Manganese and Alloys - 544.1 Copper
- 546.1 Lead and Alloys - 546.3 Zinc and Alloys - 549.3 Nonferrous Metals and Alloys
excluding Alkali and Alkaline Earth Metals - 801.2 Biochemistry - 804 Chemical Products
Generally - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 4.23e+01% to 9.22e+01%, Percentage 7.06e+01%
DOI:10.13227/j.hjkx.201612089
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 17>
Accession number:20174404325991
Title:Ammonia Oxidation with Potential Electron Acceptor in ANAMMOX Sludge
Authors:Li, Xiang (1, 2); Lin, Xing (1, 2); Wang, Fan (1, 2); Yuan, Yan (1, 2); Huang,
Yong (1, 2); Yuan, Yi (1, 2); Bi, Zhen (1, 2); Liu, Xin (1, 2); Yang, Peng-Bing (1, 2)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Institute of Environmental
Biotechnology, Suzhou University of Science and Technology, Suzhou; 215009, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2941-2946
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The ammonium oxidation by potential electron acceptors (NO<inf>2</inf><sup>-
</sup>, Fe<sup>3+</sup>and SO<inf>4</inf><sup>2-</sup>) in ANAMMOX sludge was studied by
inoculating nitrite-dependent ANAMMOX sludge. The results showed that nitrite was the
most suitable electron acceptor for ANAMMOX bacteria, which could completely react within
a short time. Nitrate was converted into nitrite by ANAMMOX sludge using the organic as
electron donor and then participated in ammonia conversion, in the absence of nitrite.
Fe<sup>3+</sup>and SO<inf>4</inf><sup>2-</sup>conversion occurred at the end of ammonium
oxidation, but its direct or indirect participation requires further study. Microbial
activity must be activated through addition of nitrite as electron acceptor before
ammonia excess oxidation occurred. Aerobic ammonia oxidizing bacteria and nitrite
oxidizing bacteria grew during this period. This phenomenon did not last, and the
microbial production of H<inf>2</inf>O<inf>2</inf>was speculated. Although the oxidation
rate was slow, the phenomenon of ammonium excess oxidation was obvious. Therefore, the
oxidation of excess ammonia was for sure present in ANAMMOX sludge. The order of electron
acceptor use by ANAMMOX sludge was NO<inf>2</inf><sup>-</sup>, NO<inf>3</inf><sup>-
</sup>, SO<inf>4</inf><sup>2-</sup>and Fe<sup>3+</sup>. © 2017, Science Press. All
right reserved.
Number of references:25
Main heading:Nitrogen removal
Controlled terms:Aerobic bacteria - Ammonia - Bacteria - Electrons - Nitrates - Nitrogen
oxides - Oxidation - Wastewater treatment
Uncontrolled terms:Ammonia oxidation - Ammonia oxidizing bacteria - ANAMMOX - Electron
acceptor - Microbial activities - Microbial production - Nitrite - Nitrite-oxidizing
bacteria
Classification code:452.4 Industrial Wastes Treatment and Disposal - 461 Bioengineering
and Biology - 802.2 Chemical Reactions - 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201701163
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 18>
Accession number:20174404326000
Title:Effects of Microbial Activities on Mercury Methylation in Farmland near Mercury
Mining Area
Authors:Jia, Qin (1, 2); Zhu, Xue-Mei (2); Wang, Qi (2); Fu, Hai-Hui (2); Hao, Ya-Qiong
(2); He, Jie (2); Yang, Zi-Liang (2)
Author affiliation:(1) College of Water Sciences, Beijing Normal University, Beijing;
100875, China; (2) Research Institute of Solid Waste Management, Chinese Research Academy
of Environmental Sciences, Beijing; 100012, China
Corresponding author:Zhu, Xue-Mei(zhuxm@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:3020-3027
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to study the main effect of microbial activities on mercury (Hg)
methylation in farmland, mercury contaminated upland soils and paddy soils near Hg mining
area were sampled as experimental soils. Four treatments were designed including only
sterilization as the control, accelerating the activities of sulfate reducing bacteria
(SRB), inhibiting the SRB's activities, and accelerating the activities of iron-reducing
bacteria (FeRB), to know the effects of microbial and non-microbial factors on mercury
methylation in soils. The results were as follows: the highest concentration of
methylmercury (MeHg) was observed in soils with SRB accelerated treatment, and the
increments of MeHg concentrations in upland soils and paddy soils ranged from 0.15
μg·kg<sup>-1</sup>to 0.38 μg·kg<sup>-1</sup>and 1
μg·kg<sup>-1</sup>to 2 μg·kg<sup>-1</sup>, respectively.
Comparatively, little increments of MeHg concentration were seen in soils with SRB
inhibited treatment and FeRB accelerated treatment, which were lower than 0.025
μg·kg<sup>-1</sup>. Compared with upland soils, more MeHg was formed in Paddy
soils and the concentrations of MeHg in paddy soils were 4-9 times of that in upland
soils. Variation in the number of SRB in soils was similar to that in the concentration
of MeHg in soils, and the number of SRB was positively correlated with the concentration
of MeHg concentrations in soils (R<sup>2</sup>=0.57, P<0.01). The above results
indicated that activities of reducing bacteria, especially SRB, played key role in the
methylation in soils. In addition, more attention should be paid to paddy soils due to
the high potential of methylation when conducting any assessment and taking any measure
to manage the health risk caused by the exposure to mercury. © 2017, Science Press.
All right reserved.
Number of references:27
Main heading:Soil pollution
Controlled terms:Alkylation - Bacteria - Farms - Health risks - Landforms - Mercury
(metal) - Mercury compounds - Methylation - Risk assessment - Soils - Sulfur compounds
Uncontrolled terms:High potential - Iron reducing bacteria - Mercury methylation - Methyl
mercury - Microbial activities - Mining areas - Paddy soils - Sulfate reducing bacteria
Classification code:461.7 Health Care - 481.1 Geology - 483.1 Soils and Soil Mechanics
- 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 802.2
Chemical Reactions - 802.3 Chemical Operations - 821 Agricultural Equipment and
Methods; Vegetation and Pest Control - 914.1 Accidents and Accident Prevention
DOI:10.13227/j.hjkx.201611205
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 19>
Accession number:20174404325977
Title:Impacts of Rainfall Characteristics and Occurrence of Pollutant on Effluent
Characteristics of Road Runoff Pollution
Authors:Chen, Ying (1); Wang, Zhao (2); Wu, Ya-Gang (1); Zhao, Jian-Qiang (1); Yang,
Wen-Juan (1)
Author affiliation:(1) Key Laboratory of Subsurface Hydrology and Ecological Effect in
Arid Region of Ministry of Education, School of Environmental Science and Engineering,
Chang'an University, Xi'an; 710054, China; (2) Shaanxi Provincial Land Engineering
Construction Group Limited Liability Company, Xi'an; 710075, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2828-2835
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Urban road runoff contains pollutants such as particulate matters, organic
chemicals, heavy metals, nutrients, oil and grease that can cause significant degradation
of receiving water quality. Eliminating the pollutant mass loading of road runoff and
protecting the receiving water bodies have been the focuses in environmental field in
recent years. To accomplish pollutant reduction and develop a cost-effective treatment
method, knowledge of water quality characteristics, as well as the pollutant effluent
characteristics of road runoff is required. In order to investigate the impacts of
rainfall characteristics and occurrence of pollutant on the variation of pollutant
concentrations during the duration of runoff events and pollutant load effluent
characteristics of road runoff, 207 road runoff samples in the durations of 13 storm
events occurred at Taibai Interchange of the south second-ring road in Xi'an, Shaanxi
province from July 2014 to September 2015 were collected by the manual time-interval
sampling method, and concentrations of SS, COD, dissolved COD, Cu, dissolved Cu, Pb,
dissolved Pb, Cr, dissolved Cr, Cd and dissolved Cd of the samples were determined. The
results indicated that, the road runoff of Xi'an city was seriously polluted by SS and
COD, which were the main contaminants in road runoff. Meanwhile, concentrations of Pb and
Cr in road runoff were also at a high level. The variation of pollutant concentrations
during the duration of runoff was closely related to rainfall characteristics and
occurrence states of the pollutants. Emission of the dissolved pollutants was not
affected by the type of rainfall. The concentration of the dissolved pollutants in the
runoff reached a peak in the initial duration of runoff, and then, decreased
continuously. However, the peak concentration of particulate pollutants in the runoff
only occurred after the peak of sufficiently large rainfall intensity. The concentration
of particulate pollutants in the runoff fluctuated sharply with the variation of rainfall
intensity, and impacted by the rainfall duration and rainfall depth as well. Rainfall
characteristics didn't have a great impact on the load emission of the dissolved
pollutants, therefore, had a significant influence on the load emission of the
particulate pollutants. Compared with the rainfall type III, first flush effects of
pollutant loads of SS, COD, Cu, Pb, Cr, Cd in rainfall type I and type I were more
obvious. Besides, first flush effect of pollutant loads was not ubiquitous. All the
pollutants in the monitoring 13 runoff events didn't exhibit an obvious first flush
effect. The descending order of the first flush effect of those pollutants was COD, SS,
dissolved COD, Cu, Pb, Cr, dissolved Cu, Cd, dissolved Pb, dissolved Cr, dissolved Cd.
© 2017, Science Press. All right reserved.
Number of references:29
Main heading:Pollution
Controlled terms:Cost effectiveness - Dissolution - Effluent treatment - Effluents -
Heavy metals - Lead - Organic chemicals - Rain - Roads and streets - Runoff -
Transportation - Water pollution - Water quality - Water treatment
Uncontrolled terms:Cost effective treatments - M(v) curve - Occurrence of pollutant -
Pollutant concentration - Rainfall characteristics - Receiving water quality - Road
runoff - Water quality characteristics
Classification code:406.2 Roads and Streets - 442.1 Flood Control - 443.3
Precipitation - 445.1 Water Treatment Techniques - 445.2 Water Analysis - 452.3
Industrial Wastes - 452.4 Industrial Wastes Treatment and Disposal - 453 Water
Pollution - 531 Metallurgy and Metallography - 546.1 Lead and Alloys - 802.3 Chemical
Operations - 804.1 Organic Compounds - 911.2 Industrial Economics
DOI:10.13227/j.hjkx.201612153
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 20>
Accession number:20174404325602
Title:Basic Features of Combustible Rural Garbage Component and Its Spatial-temporal
Difference in China
Authors:Yan, Zhuo-Yi (1); Yue, Bo (2); Gao, Hong (1); Li, Zhi-Long (2); Huang, Qi-Fei
(2); Nie, Xiao-Qin (3); Wang, Qun-Hui (1, 4)
Author affiliation:(1) Faculty of Civil Engineering and Architecture, Kunming University
of Science and Technology, Kunming; 650500, China; (2) Chinese Research Academy of
Environmental Sciences, Beijing; 100012, China; (3) China Urban Construction Design &
Research Institute Co., Ltd., Beijing; 100120, China; (4) Department of Environmental
Engineering, University of Science and Technology Beijing, Beijing; 100083, China
Corresponding author:Gao, Hong(gaohong208@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:3078-3084
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to realize the disposal feasibility of rural garbage by incineration,
72 rural garbage sampling points of 12 provinces in China were chosen to analyse mass
fraction of full component and combustible component, moisture content of full component
and low heating value of rural garbage in spring, summer, autumn and winter of 2015.The
results revealed that the mass fraction of combustible rural garbage components in wet
basis followed the order of kitchen residual (13%-53%)>the rubber (10%-18%)>the
paper (10%-15%)>the wood (0-10%)>the fabric(0-8%). The compositional difference of
rural garbage was not apparent between villages and towns within the same administrative
region. The average moisture content of full component in southern rural garbage was
higher than that in northern area, and the average moisture content of national rural
garbage was about 40.1%. The low heating value of rural garbage in full composition which
surpassed 3500 kJ·kg<sup>-1</sup>was more than 81% in the north China, but in the
south China, it was 44%, 50%, 61% and 72% in spring, summer, autumn and winter,
respectively. After sorting, the low heating value increased greatly, but the low heating
value of southern rural garbage in spring was still less than 3500 kJ·kg<sup>-
1</sup>, more than 56% towns and villages of southern rural garbage in summer, autumn and
winter and annual northern rural garbage heating value met the heating value requirement
of incineration disposal. Therefore, after sorting, the rural garbage by incineration
disposal method was feasible to the north China rural garbage, but the south China rural
garbage requires strengthened pretreatment process. © 2017, Science Press. All right
reserved.
Number of references:26
Main heading:Rural areas
Controlled terms:Chemical analysis - Heating - Incineration - Moisture - Moisture
determination
Uncontrolled terms:Compositional difference - Disposal methods - Heating value - Low
heating values - Pretreatment process - Sampling points - Spatial temporals - Villages
and towns
Classification code:944.2 Moisture Measurements
Numerical data indexing:Percentage 0.00e+00% to 1.00e+01%, Percentage 0.00e+00% to 8.00e
+00%, Percentage 1.00e+01% to 1.50e+01%, Percentage 1.00e+01% to 1.80e+01%, Percentage
1.30e+01% to 5.30e+01%, Percentage 4.01e+01%, Percentage 4.40e+01%, Percentage 5.00e+01%,
Percentage 5.60e+01%, Percentage 6.10e+01%, Percentage 7.20e+01%, Percentage 8.10e+01%,
Specific_Energy 3.50e+06J/kg
DOI:10.13227/j.hjkx.201610191
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 21>
Accession number:20174404325959
Title:Pollution Characteristics and Light Extinction Contribution of Water-soluble Ions
of PM<inf>2.5</inf>in Hangzhou
Authors:Wu, Dan (1, 2); Lin, Shao-Long (1, 2); Yang, Huan-Qiang (3); Du, Rong-Guang (3);
Xia, Jun-Rong (4); Qi, Bing (3); Liu, Gang (1, 2); Li, Feng-Ying (1, 2); Yang, Meng (1,
2); Gai, Xin-Lei (1, 2)
Author affiliation:(1) Jiangsu Collaborative Innovation Center of Atmospheric Environment
and Equipment Technology (CICAEET), Nanjing University of Information Science and
Technology, Nanjing; 210044, China; (2) Jiangsu Key Laboratory of Atmospheric Environment
Monitoring and Pollution Control, Nanjing University of Information Science and
Technology, Nanjing; 210044, China; (3) Hangzhou Meteorological Bureau, Hangzhou; 310051,
China; (4) Key Laboratory for Aerosol-Cloud-Precipitation, China Meteorological
Administration, Nanjing; 210044, China
Corresponding author:Du, Rong-Guang(drg2002@sina.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2656-2666
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The pollution characteristics and light extinction contribution of water-soluble
ions of PM<inf>2.5</inf>in Hangzhou were investigated by sampling and laboratory analysis
of aerosol samplers in 2013. The water-soluble ions were dominant in PM<inf>2.5</inf>and
the total mass concentration was 37.5 μg·m<sup>-3</sup>, accounting for 44.4%
of the PM<inf>2.5</inf>mass concentration. Water-soluble ions were mainly composed of
secondary ions (SO<inf>4</inf><sup>2-</sup>, NO<inf>3</inf><sup>-</sup>and
NH<inf>4</inf><sup>+</sup>), which accounted for 83.4% of total ions. The highest mass
concentrations of PM<inf>2.5</inf>and major ions were observed in winter and the lowest
in summer. The proportions of water-soluble ions in PM<inf>2.5</inf>in summer and autumn
were obviously higher than those in winter and spring and proportions of secondary ions
in water-soluble ions were very close in each season. The contribution was the greatest
to PM<inf>2.5</inf>from secondary ions generation caused by fuel combustion and
automobile exhaust. The annual average values of SOR and NOR were 0.27 and 0.15
respectively, the conversion rate of SO<inf>2</inf>in atmosphere was greater than that of
NO<inf>x</inf>. There was obvious positive correlation between SOR or NOR and humidity
which indicated the important contribution of heterogeneous oxidation process to the
generation of SO<inf>4</inf><sup>2-</sup>and NO<inf>3</inf><sup>-</sup>. The annual
average of [NO<inf>3</inf><sup>-</sup>]/[SO<inf>4</inf><sup>2-</sup>] was 0.63, and the
aerosol pollution was primarily affected by emissions from coal burning. In haze days,
with the increase of haze pollution level, the mass concentrations of PM<inf>2.5</inf>,
water-soluble ions, secondary ions as well as SOR and NOR all increased gradually, and
the stable weather condition in haze days could efficiently promote the accumulation and
secondary conversion of pollutants. There were obvious positive correlations between mass
concentrations of PM<inf>2.5</inf>and SNA and the atmospheric light extinction
coefficient. The IMPROVE formula which was used to calculate the light extinction
coefficients of different chemical components could efficiently indicate the tendency of
aerosol scattering. The extinction contribution of SNA could reach 60.8%. The extinction
coefficient of SNA was the highest in winter and lowest in summer, and its value and
contribution proportion both increased gradually as the haze pollution level rose. ©
2017, Science Press. All right reserved.
Number of references:34
Main heading:Water pollution
Controlled terms:Aerosols - Air pollution - Atmospheric humidity - Coal combustion -
Fuels - Ions - Light extinction - Pollution - Secondary emission
Uncontrolled terms:Extinction coefficients - Haze - Heterogeneous oxidation - Laboratory
analysis - Light extinction coefficients - PM2.5 - Positive correlations - Water-soluble
ions
Classification code:443.1 Atmospheric Properties - 451 Air Pollution - 453 Water
Pollution - 521 Fuel Combustion and Flame Research - 524 Solid Fuels - 741.1
Light/Optics
Numerical data indexing:Percentage 6.08e+01%, Percentage 8.34e+01%, Percentage 4.44e+01%
DOI:10.13227/j.hjkx.201609043
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 22>
Accession number:20174404326002
Title:Application of Amphoteric-Cationic Combined Modification on Phenol Adsorption of
Yellow Brown Soil
Authors:Liu, Wei (1, 2); Meng, Zhao-Fu (1, 3); Ren, Shuang (1); Li, Wen-Bin (1)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) Department of Chemical and Environmental
Engineering, Xinjiang Institute of Engineering, Urumqi; 830091, China; (3) Key Laboratory
of Plant Nutrition and Agri-Environment in Northwest China, Ministry of Agriculture,
Yangling; 712100, China
Corresponding author:Meng, Zhao-Fu(zfmeng1996@263.net)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:3036-3044
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on the best modification ration of adsorption of phenol on montmorillonite
modified by a mixture of amphoteric modifier, dodecyl dimethyl betaine (BS-12), and
cationic modifier, hexadecyltrimethyl ammonium bromide (CTMAB), an experiment was
designed to prepare two series of amphoteric-cationic modified soils by two yellow brown
soils with montmorillonite contents of 43% and 6%, respectively. The adsorption
properties of phenol were studied, and the adsorption influence at different temperature,
pH and ionic strength was also analyzed and moreover, the adsorption differences between
co-modified montmorillonite and yellow brown soils and between two co-modified yellow
brown soils were discussed by comparing with co-modified montmorillonite. The results
showed that adsorption of yellow brown soils as well as co-modified montmorillonite on
phenol increased with combined modification, adsorption capacity was in order of 215BS
+215CT(215%BS-12+215%CTMAB)>215CT(215%CTMAB) >215BS(215%BS-12)>CK1 (unmodified
soil containing montmorillonite content of 43%), 33BS+33CT(33%BS-12+33%CTMAB)>33CT
(33%CTMAB) >33BS(33%BS-12)>CK2 (unmodified soil with montmorillonite content of 6%)
at 30℃. Henry model described the adsorption of phenol very well. The phenol
adsorption of modified yellow brown soils decreased with increasing temperature and pH,
but increased with increasing ionic strength at low concentration ranges as well as
modified montmorillonite. The basic reason for adsorption difference between co-modified
montmorillonite and yellow brown soils and between two co-modified yellow brown soils was
Cation Exchange Capacity (CEC). © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Soils
Controlled terms:Adsorption - Clay minerals - Ionic strength - Phenols
Uncontrolled terms:Adsorption capacities - Adsorption properties - Brown soil - Cation
exchange capacities - Combined modification - Hexadecyltrimethylammonium bromide -
Increasing temperatures - Modified montmorillonite
Classification code:482.2 Minerals - 483.1 Soils and Soil Mechanics - 801.4 Physical
Chemistry - 802.3 Chemical Operations - 804.1 Organic Compounds
Numerical data indexing:Percentage 4.30e+01%, Percentage 6.00e+00%
DOI:10.13227/j.hjkx.201612014
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 23>
Accession number:20174404325978
Title:Inhibition of Internal Phosphorus Release in the Black-Odor Channel Under Different
Adding Methods of CaO<inf>2</inf>
Authors:Xu, Yao (1); Li, Da-Peng (1); Han, Fei-Er (1); Song, Xiao-Jun (1); Li, Xin (1);
Zhou, Jing (1); Huang, Yong (1)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China
Corresponding author:Li, Da-Peng(ustsldp@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2836-2842
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The inhibition of sedimentary phosphorus (P) was investigated under the
CaO<inf>2</inf>with 3 addition ways. The overlying water and sediments came from a
black-odor channel in S City. The results showed that the value of pH and DO in the
overlying water increased under the 3 addition ways of CaO<inf>2</inf>. Under the
condition of injection, the DO concentration of the overlying water was lower than that
of the covering condition, which indicated that the injection could delay the oxidation
of CaO<inf>2</inf>and be favor of creating the micro-oxidation environment in the
sediment. The concentrations and the trend of TP and DIP in the overlying water were
similar under the injection and covering, which were lower than that in the mixing
condition. However, under the covering condition, the DIP concentration in the pore water
was the highest, reaching up to 120.33-142.18 times, compared with the injection
condition. Noticeably, the DIP in the pore water and the overlying water was lower,
indicating that the addition of CaO<inf>2</inf>could inhibit the release of sedimentary
P. This was attributed to the micro-oxidation environment. The sedimentary P fractions
also confirmed this. The explanation may be that the addition of
CaO<inf>2</inf>accelerated the mineralization of organophosphate and the formation of
Fe-Al/P and Ca-P, which enhanced the retention of sedimentary P. © 2017, Science
Press. All right reserved.
Number of references:30
Main heading:Calcium compounds
Controlled terms:Eutrophication - Oxidation - Phosphorus - Sedimentology - Sediments -
Water - Water injection
Uncontrolled terms:Adding methods - DO concentration - Injection conditions - Micro-
oxidation - Mixing conditions - Overlying water - Phosphorus fractions - Phosphorus
release
Classification code:481.1 Geology - 483 Soil Mechanics and Foundations - 612.1
Internal Combustion Engines, General - 802.2 Chemical Reactions - 804 Chemical Products
Generally
DOI:10.13227/j.hjkx.201612251
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 24>
Accession number:20174404325601
Title:Mesophilic and Thermophilic Anaerobic Co-Digestion of Food Waste and Straw
Authors:Guo, Xiang-Lin (1); Zuo, Jian-E (1); Shi, Xu-Chuan (1); Wang, Kai-Jun (1); Wu,
Jing (1)
Author affiliation:(1) State Key Joint Laboratory of Environment Simulation and Pollution
Control, School of Environment, Tsinghua University, Beijing; 100084, China
Corresponding author:Zuo, Jian-E(jiane.zuo@mail.tsinghua.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:3070-3077
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The anaerobic co-digestion of food waste and straw is more efficient in avoiding
the accumulation of volatile fatty acids and promoting the degradation of lignocellulose
in comparison with their individual digestions. The co-digestion of food waste and straw
was investigated under mesophilic (35℃) and thermophilic (55℃) condition,
respectively. The results indicated that when feeding volatile solid concentration was 3
kg·m<sup>-3</sup>, the accumulated methane production yield of the mesophilic
reactor reached the peak of 272.0 mL·g<sup>-1</sup>at a food waste-to-straw ratio
of 9:1, while it reached the peak of 402.3 mL·g<sup>-1</sup>at a food waste-to-
straw ratio of 5:5 for thermophilic reactor. These amounts were significantly higher than
those of food waste digestion alone (218.6 mL·g<sup>-1</sup>for mesophilic reactor
and 322.0 mL·g<sup>-1</sup>for thermophilic reactor). Co-digestion promoted the
rate of carbon transfer to methane, and further, the rate of the thermophilic reactor was
higher than that of the mesophilic reactor. Degradation rate for lignocellulose of
thermophilic reactor was 34.7%-45.8%, higher than that of mesophilic reactor, 12.6%-
42.2%. It was confirmed by 16S rRNA gene sequences of bacteria and archaea, ITS sequences
of fungi based on high-throughput sequencing techniques, which showed the amounts of
lignocellulose degrading bacteria and actinomycetes in the thermophilic reactor were both
higher than those in the mesophilic reactor. © 2017, Science Press. All right
reserved.
Number of references:22
Main heading:Anaerobic digestion
Controlled terms:Bacteria - Biodegradation - Cellulose - Degradation - Fatty acids -
Lignin - Methane - RNA - Straw - Volatile fatty acids
Uncontrolled terms:Anaerobic co-digestion - Carbon flow - Food waste - Mesophilic -
Thermophilic
Classification code:461.2 Biological Materials and Tissue Engineering - 461.8
Biotechnology - 802.2 Chemical Reactions - 804.1 Organic Compounds - 811.3 Cellulose,
Lignin and Derivatives - 821.5 Agricultural Wastes
Numerical data indexing:Percentage 1.26e+01% to 4.22e+01%, Percentage 3.47e+01% to 4.58e
+01%, Specific_Volume 2.19e-01m3/kg, Specific_Volume 2.72e-01m3/kg, Specific_Volume
3.22e-01m3/kg, Specific_Volume 4.02e-01m3/kg
DOI:10.13227/j.hjkx.201612267
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 25>
Accession number:20174404326001
Title:Effect of Sepiolite Application on the Migration and Redistribution of Pb and Cd in
Soil Rice System in Soil with Pb and Cd Combined Contamination
Authors:Fang, Zhi-Ping (1, 2); Liao, Min (1, 2); Zhang, Nan (1, 2); Lü, Ting (1, 2);
Huang, Xiao-Hui (1, 2)
Author affiliation:(1) College of Environmental and Resource Sciences, Zhejiang
University, Hangzhou; 310058, China; (2) Zhejiang Provincial Key Laboratory of
Subtropical Soil and Plant Nutrition, Hangzhou; 310058, China
Corresponding author:Liao, Min(liaomin@zju.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:3028-3035
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to research the coordination relation between sepiolite application and
the contents of available lead (Pb) and cadmium(Cd) in soil or rice absorption and
redistribution of Pb and Cd, a pot experiment was conducted by selecting the soil sampled
from a area polluted by Pb and Cd combination in Shaoxing City of Zhejiang Province and
atypical late Japonica Rice Varieties in Zhejiang Province (Jia 33) with lower
accumulation for Pb, Cd. The results showed that: the contents of available Pb and Cd in
soil were significantly negatively correlated with the concentration of sepiolite added,
the correlation coefficients of contents of available Pb and Cd with the concentration of
sepiolite added were -0.940 respectively and-0.952, which reached the significant level
(P<0.01). The contents of Pb and Cd in rice roots, stems, leaves and polished rice had
different reducing rates with the increase of the concentration of sepiolite. In
addition, with the increase of the concentration of sepiolite added, the enrichment
coefficients of Pb and Cd in rice roots, stems, leaves and polished rice decreased
dramatically. At the same time, Pb and Cd absorbed by roots transferred to the stems
decreasingly, Pb and Cd absorbed by stems transferred to the polished rice decreasingly.
When the addition of Sepiolite was 9.00 g·kg<sup>-1</sup>soil, the contents of Pb
and Cd in polished rice of Jia 33 were (0.14±0.02) mg·kg<sup>-1</sup>and
(0.03±0.01) mg·kg<sup>-1</sup>respectively, which were all lower than the
national limit index (GB 2762-2012). Compared with the control group, the enrichment
coefficients of Pb in roots, stems and leaves and polished rice decreased by 8.83%,
29.96%, 49.20%, 79.41% respectively, and the enrichment coefficients of Cd decreased by
23.08%, 63.22%, 44.00%, 82.35% respectively. In addition, the transportation coefficients
of Pb and Cd absorbed by roots transfer to the stems were decreased by 23.18% and 52.19%
respectively and the transportation coefficients of stem rice translocation of Pb and Cd
absorbed by stems transfer to the polished rice were decreased by 70.83%, 52.00%,
respectively. This result means the sepiolite had a good resistance control in the
migration and redistribution of Pb and Cd in soil rice system on the soil polluted by
lead and cadmium, indicating the combination of rational application of sepiolite and
rice varieties with lower accumulation for heavy metals can achieve safe agricultural
utilization of the soil with combined contamination by a relatively higher concentration
of Pb and Cd. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Soil pollution
Controlled terms:Absorption - Cadmium - Heavy metals - Lead - Pollution - Soils
Uncontrolled terms:Available Pb and Cd - Correlation coefficient - Distribution -
Enrichment coefficients - Lead and cadmiums - Resistance control - Rice - Sepiolite
Classification code:483.1 Soils and Soil Mechanics - 531 Metallurgy and Metallography -
546.1 Lead and Alloys - 549.3 Nonferrous Metals and Alloys excluding Alkali and
Alkaline Earth Metals - 802.3 Chemical Operations
Numerical data indexing:Percentage 2.31e+01%, Percentage 2.32e+01%, Percentage 3.00e+01%,
Percentage 4.40e+01%, Percentage 4.92e+01%, Percentage 5.20e+01%, Percentage 5.22e+01%,
Percentage 6.32e+01%, Percentage 7.08e+01%, Percentage 7.94e+01%, Percentage 8.23e+01%,
Percentage 8.83e+00%
DOI:10.13227/j.hjkx.201612254
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 26>
Accession number:20174404325999
Title:Patterns of Bacterial Community Through Soil Depth Profiles and Its Influencing
Factors Under Betula albosinensis Burkill in the Xinjiashan Forest Region of Qinling
Mountains
Authors:Du, Can (1); Xu, Chen-Yang (1); Wang, Qiang (1); Zhang, Fan (2); Ma, Wu-Gong (2);
He, Wen-Xiang (1); Hou, Lin (3); Geng, Zeng-Chao (1)
Author affiliation:(1) Key Laboratory of Plant Nutrition and Agri-environment in
Northwest China, College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) Forestry Bureau of Xinjiashan, Baoji; 721700,
China; (3) College of Forestry, Northwest A&F University, Yangling; 712100, China
Corresponding author:Geng, Zeng-Chao(gengzengchao@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:3010-3019
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this study, vertical changes in bacterial α-diversity and community
composition were investigated at four soil depths (0-10, 10-20, 20-40 and 40-60 cm) in
Betula albosinensis Burkill forest of Qinling Mountains by sequencing of the 16S rDNA
regions using Illumina MiSeq high-throughput technology. The results showed that the
decreases of OTUs, Chao1 and Shannon were numerical but not significant, and the highest
values of 1688, 2314 and 8.66 were obtained in 0-10 cm, respectively. At the phylum
level, Acidobacteria and Proteobacteria were the most dominant bacteria in four soil
layers. At the genus level, Gp4, Gp6 and Gp16 were the most dominant bacteria. The
relative abundance of Acidobacteria in 40-60 cm soil depth (62.88%) was higher than those
in other soil depths. Proteobacteria in 0-10 cm (23.62%) was more abundant than that in
40-60 cm. The relative abundance of Acidobacteria was significantly correlated with the
total N, soil organic carbon, C/N, and soil dissolved organic carbon. Soil water content,
soil organic matter and soil dissolved organic carbon were the key factors affecting soil
Proteobacteria. RDA sequencing results showed that soil dissolved organic carbon was the
key factor contributing to the bacteria community abundance. The results demonstrated
that there are plenty of bacterial distribution in all four soil layers, which provides a
fundamental basis for vertical soil bacterial community diversity, and possesses very
important research value in biogeochemical cycling. © 2017, Science Press. All right
reserved.
Number of references:50
Main heading:Soils
Controlled terms:Bacteria - Biogeochemistry - Dissolution - Forestry - Organic carbon -
Soil moisture - Stream flow - Throughput
Uncontrolled terms:Betula albosinensis Burkill forest - High-throughput sequencing - Soil
bacterium - Soil depth - Soil factors
Classification code:407.2 Waterways - 481.2 Geochemistry - 483.1 Soils and Soil
Mechanics - 802.3 Chemical Operations - 804.1 Organic Compounds
Numerical data indexing:Percentage 2.36e+01%, Percentage 6.29e+01%, Size 0.00e+00m to
1.00e-01m, Size 4.00e-01m to 6.00e-01m
DOI:10.13227/j.hjkx.201611002
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 27>
Accession number:20174404326005
Title:Effects of Bentonite Amendment on Detoxification, Heavy Metal Passivation and
Estrone Elimination of Sewage Sludge Compost
Authors:Zhou, Li-Na (1); Cai, Han-Zhen (1); Li, Rong-Hua (1, 2); Wang, Mei-Jing (1);
Zhao, Jun-Chao (1); Wang, Quan (1); Zhang, Zeng-Qiang (1, 2)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) Key Laboratory of Plant Nutrition and the Agri-
environment in Northwest China, Ministry of Agriculture, Yangling; 712100, China
Corresponding author:Zhang, Zeng-Qiang(zhangzq58@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:3061-3069
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Sewage sludge was amended with calcium-based bentonite with addition of no more
than 10% in dry weight during the 52-day aerobic composting process, the variations of
temperature, pH, organic carbon, EC, total nitrogen, nitrate (NH<inf>4</inf><sup>
+</sup>-N) and ammonium (NO<inf>3</inf><sup>-</sup>-N) were investigated, as well as the
compost detoxification (germination test), heavy metals (Zn, Cu, Pb, Cd) passivation and
estrone (E1) elimination. The results showed that the amendment facilitated the
thermophilic phase, promoted the compost heat inactivation and brought the organic carbon
mineral up to more than 15.27%-19.71%. During the composting, the compost pH increased at
the beginning and then gradually decreased before reaching values of 6.76-7.05, while the
amendments alleviated the dramatic pH value fluctuation. The bentonite amendment reduced
the salinity of the compost with final product EC remarkably lower than 1132
μS·cm<sup>-1</sup>of the control treatment, and the effect was enhanced with
the increase of addition amount. The total nitrogen content increased with time, and
there was a remarkable ammonia loss in the beginning stage for the control treatment,
while the bentonite addition could facilitate the total nitrogen content increase by
reducing the ammonia loss. With the composting variation, the contents of
NH<inf>4</inf><sup>+</sup>-N increased and then decreased while the NO<inf>3</inf><sup>-
</sup>-N content increased gradually. The bentonite addition had a slight inhibitory
effect on the plant germination but did not influence the compost maturity and
detoxification; meanwhile, the amendment improved the heavy metal passivation and reduced
the E1 content, especially from 90.48 to 28.27 μg·kg<sup>-1</sup>with 5%
treatment during the composting. The study indicated that bentonite addition of lower
than 5% was acceptable for the sludge compost amendment, which had great potential in
sludge hygienization, detoxification, heavy metal passivation and E1 elimination. ©
2017, Science Press. All right reserved.
Number of references:40
Main heading:Composting
Controlled terms:Ammonia - Bentonite - Cadmium - Copper - Cultivation - Detoxification -
Heavy metals - Lead - Nitrogen - Organic carbon - Passivation - Sewage sludge
Uncontrolled terms:Aerobic composting - Amendment - Compost amendments - Control
treatments - Estrone - Sewage sludge compost - Thermophilic phase - Total nitrogen
content
Classification code:452.2 Sewage Treatment - 482.2 Minerals - 531 Metallurgy and
Metallography - 539.2.1 Protection Methods - 544.1 Copper - 546.1 Lead and Alloys -
549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 804
Chemical Products Generally - 821.3 Agricultural Methods
Numerical data indexing:Age 1.42e-01yr, Electrical_Conductivity 1.13e-01S/m, Percentage
1.00e+01%, Percentage 1.53e+01% to 1.97e+01%, Percentage 5.00e+00%
DOI:10.13227/j.hjkx.201701022
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 28>
Accession number:20174404325987
Title:Cultivation of Spirulina platensis in Digested Piggery Wastewater Pretreated by SBR
with Operating Conditions Optimization
Authors:Cai, Xiao-Bo (1, 2); Yu, Qiang-Qiang (2); Liu, Rui (2); Zhao, Yuan (1); Chen,
Lü-Jun (2, 3)
Author affiliation:(1) College of Environment & Safety Engineering, Changzhou
University, Changzhou; 213164, China; (2) Zhejiang Provincial Key Laboratory of Water
Science and Technology, Department of Ecological Environment, Yangtze Delta Region
Institute of Tsinghua University, Jiaxing; 314006, China; (3) School of Environment,
Tsinghua University, Beijing; 100084, China
Corresponding author:Liu, Rui(liuruitsinghuazj@gmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2910-2916
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Digested piggery wastewater (DPW) contains high concentrations of nitrogen and
phosphorus which could be used as a cost-effective culture medium for Spirulina
platensis. However, Spirulina platensis would be limited by many factors in the complex
composition of DPW, especially the high concentration of ammonium. In this paper, a
traditional sequencing batch reactor (SBR) was used to remove these inhibitors in DPW.
The retention of nitrate and nitrite in the effluent, which was used as nitrogen source
for cultivating Spirulina platensis, was studied at different ratios of chemical oxygen
demand (COD) to total nitrogen (TN) in the influent. By comparing the growth of Spirulina
platensis in the related effluents, the operation condition of SBR was optimized. The
lab-scale cultivation results showed that Spirulina platensis possessed a high biomass
yield of 0.084 g·(L·d)<sup>-1</sup>in the effluent when the COD/TN ratio of
SBR influent was 3.0. In particular, the concentrations of ammonium, nitrate and nitrite
in the effluent were 51.2 mg·L<sup>-1</sup>, 91.6 mg·L<sup>-1</sup>and
213.1 mg·L<sup>-1</sup>, respectively. Furthermore, the aforementioned effluent
was also used to culture Spirulina platensis in a 120 L outdoor raceway pond, and the
growth rate of Spirulina platensis reached (0.075±0.003)g·(L·d)
<sup>-1</sup>after 10-day culture. The protein content of Spirulina platensis was
approximately 60% and the removal efficiency of ammonium was 99%. This study provides an
alternative method for the utilization of DPW. © 2017, Science Press. All right
reserved.
Number of references:26
Main heading:Effluents
Controlled terms:Activated sludge process - Batch reactors - Chemical oxygen demand -
Cost effectiveness - Nitrates - Nitrogen - Recycling - Wastewater reclamation
Uncontrolled terms:Ammonium - Complex compositions - Nitrogen and phosphorus - Operation
conditions - Piggery wastewater - Removal efficiencies - Sequencing batch reactors -
Spirulina platensis
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal -
802.1 Chemical Plants and Equipment - 804 Chemical Products Generally - 804.2
Inorganic Compounds - 911.2 Industrial Economics
Numerical data indexing:Age 2.74e-02yr, Mass_Density 2.13e-01kg/m3, Mass_Density 5.12e-
02kg/m3, Mass_Density 9.16e-02kg/m3, Percentage 6.00e+01%, Percentage 9.90e+01%, Volume
1.20e-01m3
DOI:10.13227/j.hjkx.201612168
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 29>
Accession number:20174404325992
Title:Ammoniac Waste Gas in-situ Treatment Based on ANAMMOX Process
Authors:Lin, Xing (1, 2); Wang, Fan (1, 2); Yuan, Yan (1, 2); Li, Xiang (1, 2); Huang,
Yong (1, 2); Gu, Cheng-Wei (1, 2)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Institute of Environmental
Biotechnology, Suzhou University of Science and Technology, Suzhou; 215009, China
Corresponding author:Li, Xiang(lixiang@mail.usts.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2947-2952
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The feasibility of ammoniac waste gas in-situ treatment by partial nitrification
(PN)-anaerobic ammonia oxidation (ANAMMOX) reactor was studied. The PN-ANAMMOX reactor
was successfuly started up after 60 d operation in conditions of low dissolved oxygen
control (0.2 mg·L<sup>-1</sup>), pH 7.9-8.2 and temperature (30-35℃). The
total nitrogen removal efficiency reached 88% and the nitrogen removal rate increased
from 0.05 kg·(m<sup>3</sup>·d)<sup>-1</sup>to 0.7 kg·
(m<sup>3</sup>·d)<sup>-1</sup>. In the treatment of ammoniac waste gas, the excess
oxygen in it would lead to massive growth of nitrifying bacteria, when the ammonia
concentration was lower than 2.59%. The ammonia and oxygen in waste gas met the
requirement of the reactor for nitrogen removal, when the ammonia concentration stayed
between 2.59% and 4.2%. Extra air flow was required for reactor oxygen supplement when
the ammonia concentration was higher than 4.2%. The ammonia removal efficiency reached
100%, the total nitrogen removal efficiency reached 90.06%, while the total nitrogen
removal rate was 0.51 kg·(m<sup>3</sup>·d)<sup>-1</sup>after 60 day
operation for ammoniac waste gas purification. It is indicated that the integrated
reactor based on PN-ANAMMOX process can achieve stable removal of ammonia waste gas.
© 2017, Science Press. All right reserved.
Number of references:25
Main heading:Nitrogen removal
Controlled terms:Air purification - Ammonia - Bacteria - Dissolved oxygen - Efficiency -
Gases - Nitrification - Nitrogen - Oxygen - Waste treatment - Wastewater treatment
Uncontrolled terms:Ammonia nitrogen removal - ANAMMOX - In-situ treatment - Oxygen
content - Waste gas
Classification code:452.4 Industrial Wastes Treatment and Disposal - 643 Space Heating,
Ventilation and Air Conditioning - 802.2 Chemical Reactions - 804 Chemical Products
Generally - 804.2 Inorganic Compounds - 913.1 Production Engineering
Numerical data indexing:Age 1.64e-01yr, Mass_Density 2.00e-04kg/m3, Percentage 1.00e+02%,
Percentage 2.59e+00%, Percentage 2.59e+00% to 4.20e+00%, Percentage 4.20e+00%, Percentage
8.80e+01%, Percentage 9.01e+01%
DOI:10.13227/j.hjkx.201612154
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 30>
Accession number:20174404325971
Title:Spatial Variations of CO<inf>2</inf>Degassing Across Water-air Interface and Its
Impact Factors in Summer in Guijiang River, China
Authors:Zhang, Tao (1, 2); Li, Jian-Hong (2); Pu, Jun-Bing (2); Wu, Fei-Hong (1, 2); Li,
Li (1, 2); Yuan, Dao-Xian (1, 2)
Author affiliation:(1) School of Geographical Sciences, Southwest University, Chongqing;
400715, China; (2) Institute of Karst Geology, Chinese Academy of Geological Sciences,
International Research Center on Karst Under the Auspices of UNESCO, Guilin; 541004,
China
Corresponding author:Pu, Jun-Bing(junbingpu@karst.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2773-2783
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:River is characterized by obvious spatial heterogeneity in catchment, which is
exacerbated by special environment features of calcium-rich, alkaline and DIC-rich
(dissolved inorganic carbon) in karst river. Thus, it also leads to significant spatial
variation in the CO<inf>2</inf>degassing across water-air interface. Main ions,
physicochemical parameters, δ<sup>13</sup>C<inf>DIC</inf>value and two common
approaches (floating chamber (FC) and thin boundary layer models (TBL) were used to
analyze the CO<inf>2</inf>degassing characteristics in Guijiang River, a karst river,
China. The results were as follows: (1) Hydrochemistry in Guijiang River basin showed a
significant spatial change. All of HCO<inf>3</inf><sup>-</sup>, Ca<sup>2+</sup>, specific
conductivity, total dissolved solids (TDS), SIc and pCO<inf>2</inf>showed similar
distribution characteristics in the following order: tributaries in the middle
reaches>middle reaches>Downstream>Upstream of Guijiang River. (2) During the
monitoring period, CO<inf>2</inf>degassing occurred in all the sampling sites and it was
the CO<inf>2</inf>source for the atmosphere. The mean CO<inf>2</inf>evasion was 237
mg·(m<sup>2</sup>·h)<sup>-1</sup>in Guijiang River, which located in the
range of average CO<inf>2</inf>evasion of global river. However, significant spatial
variations also occurred along Guijiang River. The CO<inf>2</inf>degassing flux in
tributaries of the middle reaches and middle reaches of the mainstream were obviously
larger than those in downstream and upstream of the mainstream. (3)
CO<inf>2</inf>degassing was mainly affected by carbonate equilibrium system in
tributaries in the middle reaches and middle reaches in the mainstream of the Guijiang
River basin, which resulted in obviously larger CO<inf>2</inf>degassing than those in
downstream and upstream of mainstream. However, the CO<inf>2</inf>degassing flux in
tributaries of the middle reaches was also simultaneously affected by biological
photosynthesis, and the minimum CO<inf>2</inf>degassing flux [6.38 mg·
(m<sup>2</sup>·h)<sup>-1</sup>] appeared in tributaries of the middle reaches. In
addition, the CO<inf>2</inf>degassing flux in mainstream upstream was mainly affected by
atmospheric environmental factors, while it was synergetically influenced by many factors
in mainstream downstream. © 2017, Science Press. All right reserved.
Number of references:47
Main heading:Rivers
Controlled terms:Boundary layers - Calcium - Carbon - Carbon dioxide - Catchments -
Degassing - Phase interfaces - Photosynthesis - Watersheds
Uncontrolled terms:Carbonate equilibriums - Dissolved inorganic carbon - Distribution
characteristics - Environmental factors - Physicochemical parameters - River basins -
Spatial variations - Total dissolved solids
Classification code:444.1 Surface Water - 549.2 Alkaline Earth Metals - 741.1
Light/Optics - 801.4 Physical Chemistry - 804 Chemical Products Generally - 804.2
Inorganic Compounds
DOI:10.13227/j.hjkx.201701114
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 31>
Accession number:20174404325990
Title:Fast Start-up of ANAMMOX and the Spatial Distribution of EPS in ANAMMOX Granules
Authors:Li, Hui-Juan (1, 2); Peng, Dang-Cong (1); Chen, Guo-Yan (1); Yao, Qian (1); Zhuo,
Yang (1); Wang, Bin-Bin (3)
Author affiliation:(1) School of Municipal and Environmental Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China; (2) Key Laboratory of
Northwest Water Resource, Environment and Ecology, Ministry of Education, Xi'an; 710055,
China; (3) College of Environment, Zhejiang University of Technology, Hangzhou; 310014,
China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2931-2940
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:An anaerobic sequencing batch reactor (ASBR) inoculated with activated sludge
was employed to investigate the start-up of anaerobic ammonium oxidation (ANAMMOX)
process and the spatial distribution of extracellular polymeric substances (EPS) in
ANAMMOX granules. The results showed that the removal rates of NH<inf>4</inf><sup>
+</sup>-N and NO<inf>2</inf><sup>-</sup>-N reached more than 99%. The removal rate of
total nitrogen (TN) was 89.87%±0.43% and the TN removal load in the ASBR was 1.7
kg·(m<sup>3</sup>·d)<sup>-1</sup>. The ratios of nitrite consumption and
nitrate production to ammonium consumption were 1.32±0.08 and 0.24±0.03,
respectively. Besides, the pH and the effluent nitrate concentration in bulk liquid were
considered as two simple indicators for rapid diagnosis of ANAMMOX performance. The
proteins (PN) was the main component of EPS in ANAMMOX granular sludge. The PN and
polysaccharides (PS) in ANAMMOX granules were (59.61±5.64) mg·g<sup>-
1</sup>and (12.21±2.04) mg·g<sup>-1</sup>, respectively, with the ratio of
PN/PS reaching approximately 4.88±1.39. β-D-glucofuranose and dead cells were
distributed in the outermost layer of granules, while living cells, PN, lipids, α-
glucosamine and α-mannose were distributed throughout the granules and mainly
concentrated on the outside of granules. PN and lipids constituted the framework of
ANAMMOX granules and ANAMMOX bacteria were embedded among the PN and lipids matrix.
© 2017, Science Press. All right reserved.
Number of references:51
Main heading:Nitrogen removal
Controlled terms:Activated sludge process - Batch reactors - Granulation - Lipids -
Nitrates - Polymers - Spatial distribution - Wastewater treatment
Uncontrolled terms:Anaerobic ammonium oxidation - Anaerobic sequencing batch reactors -
Extracellular polymeric substances - Fluorescent staining - Granule sludge
Classification code:452.2 Sewage Treatment - 452.4 Industrial Wastes Treatment and
Disposal - 802.1 Chemical Plants and Equipment - 802.3 Chemical Operations - 804.1
Organic Compounds - 804.2 Inorganic Compounds - 815.1 Polymeric Materials - 921
Mathematics
Numerical data indexing:Percentage 9.90e+01%
DOI:10.13227/j.hjkx.201701037
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 32>
Accession number:20174404325975
Title:High-resolution Distribution Characteristics of Phosphorous, Iron and Sulfur Across
the Sediment-Water Interface of Aha Reservoir
Authors:Sun, Qing-Qing (1, 2); Chen, Jing-An (1); Wang, Jing-Fu (1); Yang, Hai-Quan (1);
Ji, Yong-Xue (1, 2); Lan, Chen (1, 2); Wang, Xiao (3)
Author affiliation:(1) State Key Laboratory of Environmental Geochemistry, Institute of
Geochemistry, Chinese Academy of Sciences, Guiyang; 550081, China; (2) College of
Resources and Environment, University of Chinese Academy of Sciences, Beijing; 100049,
China; (3) School of Geography and Environmental Science, Guizhou Normal University,
Guiyang; 550025, China
Corresponding author:Chen, Jing-An(chenjingan@mail.gyig.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2810-2818
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In situ two-dimension, high-resolution distribution of phosphorus (P), iron
(Fe), sulfur (S) from the sediment-water interface was investigated in different areas of
Aha Reservoir, a typical sub-deep water lake, using diffusive gradients in thin films
(DGT) technique, combining with water chemistry and sedimentary phosphorus speciation
analysis, aimed to discuss the distribution and control factors of P-Fe-S in sediments.
DGT-P ranged from 0.00 mg·L<sup>-1</sup>to 0.43 mg·L<sup>-1</sup>. DGT-Fe
rangd from 0.00 mg·L<sup>-1</sup>to 2.83 mg·L<sup>-1</sup>. DGT-S ranged
from 0.00 mg·L<sup>-1</sup>to 0.10 mg·L<sup>-1</sup>. There was no
significant correlation among the concentrations of P, Fe, S in the sediment pore water
of Aha Reservoir, which is markedly different from the results of previous studies. We
hypothesize that the high ratios of Fe/P and Fe/S induced the direct reaction of surplus
Fe(III) with S<sup>2-</sup>, yielding FeS and/or FeS<inf>2</inf>, while P was firmly
fixed in sediments by Fe(III). NaOH-SRP(ranging between 192 and 604 mg·kg<sup>-
1</sup>) and BD-P(ranging between 143 and 524 mg·kg<sup>-1</sup>) were the two
major fractions of P in sediments. Since the environment for the bottom layer of water in
Aha Reservoir is anoxic, the geochemical cycle of Fe and S potentially has a massive
impact on the activation and migration of sedimentary P. © 2017, Science Press. All
right reserved.
Number of references:45
Main heading:Reservoirs (water)
Controlled terms:Chemical analysis - Chemicals removal (water treatment) - Diffusion in
solids - Interfaces (materials) - Iron - Iron compounds - Iron oxides - Phosphorus -
Sedimentology - Sediments - Sulfur - Thin films
Uncontrolled terms:Diffusive gradients in thin films - Direct reactions - Distribution
characteristics - Geochemical cycles - Phosphorus speciation - Sediment pore water -
Sediment water interface - Water chemistry
Classification code:441.2 Reservoirs - 481.1 Geology - 483 Soil Mechanics and
Foundations - 545.1 Iron - 804 Chemical Products Generally - 804.2 Inorganic Compounds
- 951 Materials Science
Numerical data indexing:Mass_Density 0.00e+00kg/m3 to 1.00e-04kg/m3, Mass_Density 0.00e
+00kg/m3 to 2.83e-03kg/m3, Mass_Density 0.00e+00kg/m3 to 4.30e-04kg/m3
DOI:10.13227/j.hjkx.201611159
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 33>
Accession number:20174404325968
Title:Estimation of Health Risk and Enaction of Safety Standards of N-
nitrosodimethylamine (NDMA) in Drinking Waters in China
Authors:Zhang, Qiu-Qiu (1, 2); Pan, Shen-Ling (1, 2); Zhang, Yu (1, 2); Yang, Min (1, 2);
An, Wei (1, 2)
Author affiliation:(1) State Key Laboratory of Environmental Aquatic Chemistry, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085,
China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:An, Wei(anwei@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2747-2753
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Nitrosamines such as nitrosodimethylamine (NDMA) in drinking water have recently
attracted great attention because of their high carcinogenicity and high detection rate.
Nitrosamines have also been repeatedly detected in drinking water in our country, leading
to a lot of concerns about our drinking water safety. However, China has not yet
formulated the relevant drinking water safety standards. In order to evaluate the health
risks caused by NDMA in drinking water and to provide recommendations for the development
of drinking water safety standards, the method of disability-adjusted life years (DALYs)
and the two-stage disease model were used to estimate the health risk of liver cancer
caused by intake of NDMA in drinking water. The data of this study were collected from
two large-scale water quality surveys conducted in 35 cities in China from November 2009
to May 2012, and the detection conducted by Chen Chao, et al. in 23 cities in China from
2012 to 2014, with a total of 146 water plants data. The results showed that mean (8.97
ng·L<sup>-1</sup>) and median (2.90 ng·L<sup>-1</sup>) NDMA concentrations
were both not very high except in some special areas. The incidence of life-long cancer
was 5.69×10<sup>-6</sup>and 5.69 times as high as the negligible risk value
(1×10<sup>-6</sup>) specified by the US EPA. The total disease burden of NDMA was
844.15 person-years, of which the death loss was 818.31 person-years, accounting for
96.9%. The incapacity loss was 25.84 person-years, accounting for 3.1% in comparison.
Death loss was greater than the loss of incapacity. The disease burden was highest in the
age group of 55-60 years (129.40 person-years), followed by 45-50 years (120.44 person-
years). The burden of disease was higher in middle-aged and elderly people. The averaged
loss was 6.27×10<sup>-7</sup>DALYs per person per year in our country. Only
considering the health risk factors, NDMA concentration safety standards should be 6.12
ng·L<sup>-1</sup>. According to the specific national conditions, the NDMA safety
standard in the range of 6-40 ng·L<sup>-1</sup>was recommended. On one hand, we
can control the concentration of NDMA in drinking water, to reduce health risks as far as
possible, and on the other hand, we can also ensure the effectiveness of disinfection of
drinking water treatments. China's economic and water treatment technological level and
other factors should also be taken into consideration in the near future. In view of
potential health risks of NDMA, it's necessary to adopt more effective, economical and
also environmental water treatment techniques and develop reasonable safety standards to
ensure the quality of drinking water and people's health. © 2017, Science Press. All
right reserved.
Number of references:46
Main heading:Potable water
Controlled terms:Diseases - Environmental Protection Agency - Health - Health risks -
Risk perception - Safety engineering - Standards - Water - Water quality - Water
treatment
Uncontrolled terms:Disability adjusted life years - Environmental water - High detection
rate - N-nitrosodimethylamine - Nitrosodimethylamine - Potential health risks - Treatment
techniques - Water safety
Classification code:444 Water Resources - 445.1 Water Treatment Techniques - 445.2
Water Analysis - 454.2 Environmental Impact and Protection - 461.6 Medicine and
Pharmacology - 461.7 Health Care - 902.2 Codes and Standards - 914 Safety Engineering
- 914.1 Accidents and Accident Prevention
Numerical data indexing:Mass_Density 2.90e-09kg/m3, Mass_Density 6.00e-09kg/m3 to 4.00e-
08kg/m3, Mass_Density 6.12e-09kg/m3, Mass_Density 8.97e-09kg/m3, Percentage 3.10e+00%,
Percentage 9.69e+01%
DOI:10.13227/j.hjkx.201612107
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 34>
Accession number:20174404325984
Title:Transformation of Disinfection Byproduct Precursors During the Wastewater
Regeneration Processes
Authors:Han, Hui-Hui (1); Miao, Heng-Feng (1, 2, 3); Zhang, Ya-Jing (1); Lu, Min-Feng
(1); Huang, Zhen-Xing (1, 2, 3); Ruan, Wen-Quan (1, 2, 3)
Author affiliation:(1) School of Environment & Civil Engineering, Jiangnan
University, Wuxi; 214122, China; (2) Jiangsu Key Laboratory of Anaerobic Biotechnology,
Wuxi; 214122, China; (3) Jiangsu Collaborative Innovation Center of Technology and
Material of Water Treatment, Suzhou; 215009, China
Corresponding author:Miao, Heng-Feng(hfmiao@jiangnan.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2883-2892
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Disinfection byproduct (DBP) precursors during the wastewater regeneration
processes were separated into hydrophilic fraction (HPI), hydrophobic fraction (HPO) and
transphilic fraction (TPI) with macroporous resin. DBP precursors in these water samples
were characterized with fluorescence excitation emission matrix, Fourier transformation
infrared and nuclear magnetic resonance, and were further tested for their DBP formation
potential (DBPFP) after chlorination. The results indicated that main DBP precursors in
sewage were humic acid and aliphatic hydrocarbons, and were mainly dominated by HPI.
Primary treatment (sedimentation) could effectively remove hydrophobic humic acid through
the mutual exclusion between HPO and water. The removal of humic acid would lead to the
obvious reduction of carbonaceous disinfection byproduct formation potential (C-DBPFP).
In addition, nitrogenous disinfection byproduct formation potential (N-DBPFP) was found
to be increased due to the increase of DON/DOC value. Although secondary treatment
(biotreatment) was effective in removing humic acid and aliphatic hydrocarbons, it could
produce a large amount of soluble microbial products (SMP), which led to the enhancement
of HPO percentage. And the accumulation of SMP resulted in the significant increase of
C-DBPFP and N-DBPFP. Humic acid and hydrophobic SMP could be removed by the advanced
treatment (cloth filtration), leading to the reduction of HPO percentage and the increase
of HPI percentage. The decrease of humic acid and hydrophobic SMP would cause the
reduction of C-DBPFP and N-DBPFP in the advanced treatment. © 2017, Science Press.
All right reserved.
Number of references:30
Main heading:Disinfection
Controlled terms:Biological materials - Filtration - Fluorescence - Fourier transforms -
Hydrocarbons - Hydrophilicity - Hydrophobicity - Linear transformations - Nuclear
magnetic resonance - Organic acids - Sewage - Wastewater treatment
Uncontrolled terms:Disinfection by-product formation potential - Disinfection by-product
precursors - Disinfection byproducts - Fluorescence excitation emission matrix - Fourier
transformations - Nitrogenous disinfection by-products - Re-claimed water - Soluble
microbial products
Classification code:452.1 Sewage - 452.4 Industrial Wastes Treatment and Disposal -
461.2 Biological Materials and Tissue Engineering - 741.1 Light/Optics - 802.3
Chemical Operations - 804.1 Organic Compounds - 921.3 Mathematical Transformations -
931.2 Physical Properties of Gases, Liquids and Solids
DOI:10.13227/j.hjkx.201611171
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 35>
Accession number:20174404325995
Title:Influence of Salinity on Microbial Community in Activated Sludge and Its
Application in Simulated Dye Wastewater Treatment
Authors:Zhou, Gui-Zhong (1); Xu, Shuo (1); Yao, Qian (1); Yin, Chai (1)
Author affiliation:(1) College of Environment and Safety Engineering, Qingdao University
of Science and Technology, Qingdao; 266042, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2972-2977
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The performance and microbial community profiles in a sequencing batch reactor
(SBR) treating saline wastewater were studied over 300 days from 0% to 2.0% salinity. The
effects of crystal violet wastewater and nano-ferroferric oxide on microbial communities
were also researched. The experimental results indicated that the activated sludge had
high sensitivity to salinity variations in terms of pollutants removal and sedimentation.
At 2.0% salinity, the system retained a good performance, and 80% removal rate of COD and
75% removal rate of NH<inf>4</inf><sup>+</sup>-N could be achieved and SVI value was less
than 35 mL·g<sup>-1</sup>; With the increase of salinity, the microbial diversity
reduced gradually, the advantageous position of Gram-negative bacteria was gradually
replaced by fungi and actinomycetes, whereas Gram-positive bacteria strains remained the
advantageous group; In the comparison of activated sludge added with crystal violet dye
with the activated sludge samples with a salinity of 2%, it was found that the contents
of Parvibaculum and Winogradskyella were higher while the contents of Rhodanobacter and
Agrobacterium decreased. In the comparison of crystal violet-activated sludge with and
without addition of MNPs, it was found that the contents of Acidocella and Rhodanobacter
were higher while the contents of Parvibaculum and Agrobacterium decreased. © 2017,
Science Press. All right reserved.
Number of references:25
Main heading:Activated sludge process
Controlled terms:Bacteria - Batch reactors - Microorganisms - Sensitivity analysis -
Wastewater treatment
Uncontrolled terms:Activated sludge - Dye wastewaters - Microbial communities - Salinity
- Sludge volume index
Classification code:452.2 Sewage Treatment - 452.4 Industrial Wastes Treatment and
Disposal - 461.9 Biology - 802.1 Chemical Plants and Equipment - 921 Mathematics
Numerical data indexing:Age 8.22e-01yr, Percentage 0.00e+00% to 2.00e+00%, Percentage
2.00e+00%, Percentage 7.50e+01%, Percentage 8.00e+01%
DOI:10.13227/j.hjkx.201609184
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 36>
Accession number:20174404325960
Title:Formation and Size Distribution of the Secondary Aerosol Inorganic Ions in
Different Intensity of Haze in Qingdao, China
Authors:Xie, Dan-Dan (1, 2); Qi, Jian-Hua (1, 2); Zhang, Rui-Feng (1, 2)
Author affiliation:(1) Key Laboratory of Marine Environment and Ecology, Education
Ministry Ocean University of China, Qingdao; 266100, China; (2) College of Environmental
Science and Engineering, Ocean University of China, Qingdao; 266100, China
Corresponding author:Qi, Jian-Hua(qjianhua@ouc.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2667-2678
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Size-segregated atmospheric aerosol samples were collected from September 2015
to February 2016 at a coastal site in Qingdao, and the concentrations of major water-
soluble inorganic ions were analyzed by ion chromatography. Characteristics and variation
of size distribution of secondary inorganic components in aerosol were discussed, as well
as the formation process and influencing factors of SNA (sulfate, nitrate and ammonium).
The results indicated that the concentrations of NO<inf>3</inf><sup>-</sup>,
SO<inf>4</inf><sup>2-</sup>, NH<inf>4</inf><sup>+</sup>, NO<inf>2</inf><sup>-</sup>,
Cl<sup>-</sup>in the aerosols were in the range of 10.32-193.46, 4.42-74.05, 2.21-57.75,
0.05-2.22 and 1.35-17.39 μg·m<sup>-3</sup>respectively. And the mass
concentration of SNA increased with the intensity of haze pollution. The concentrations
of NO<inf>3</inf><sup>-</sup>on the slight, mild, moderate and severe haze days were 55%,
77%, 240% and 537% higher than that on non-haze days respectively, while concentrations
of SO<inf>4</inf><sup>2-</sup>increased by 4.7%, 35%, 77% and 262% respectively, and
concentrations of NH<inf>4</inf><sup>+</sup>increased by 72%, 83%, 201% and 526%
respectively. The contribution of these water-soluble ions to PM<inf>2.5</inf>showed that
the proportion of sum of NO<inf>3</inf><sup>-</sup>, SO<inf>4</inf><sup>2-</sup>,
NH<inf>4</inf><sup>+</sup>, NO<inf>2</inf><sup>-</sup>and Cl<sup>-</sup>to
PM<inf>2.5</inf>was in range of 62.03%-80.93%. The proportion of ion to
PM<inf>2.5</inf>decreased in the order of NO<inf>3</inf><sup>-
</sup>>SO<inf>4</inf><sup>2-</sup>>NH<inf>4</inf><sup>+</sup>>Cl<sup>-
</sup>>NO<inf>2</inf><sup>-</sup>. With the enhancement of haze pollution, the
proportion of NO<inf>3</inf><sup>-</sup>in PM<inf>2.5</inf>increased from 29.53% to
45.54%. The correlation analysis showed that NO<inf>3</inf><sup>-</sup>and
SO<inf>4</inf><sup>2-</sup>in the fine particle were significantly correlated with
gaseous precursors NO<inf>2</inf>and SO<inf>2</inf>, and also showed good correlations
with relative humidity, visibility, wind speed and other weather conditions. These
results indicated that the formation of SNA in fine particles was one of the main reasons
for visibility decrease and the formation of air pollution in haze days. Meanwhile, high
concentration of gaseous precursors, high relative humidity and low wind speed were the
important influencing factors of haze formation. Except for slight haze days, SOR and NOR
in the haze days were higher than those on the non-haze days, and increased significantly
with the intensifying of haze, especially for 0.43-0.65 and 0.65-1.1 μm particle size.
Conversion rates of nitrogen and sulfur in severe haze days were 1.5 times that in non-
haze days, which showed nitrate and sulfate in these fine mode were mainly from gas-to-
particle conversion. NO<inf>3</inf><sup>-</sup>, SO<inf>4</inf><sup>2-</sup>,
NH<inf>4</inf><sup>+</sup>and NO<inf>2</inf><sup>-</sup>increased in haze significantly,
which mainly existed in the fine particles. The cloud process played a more important
role on haze days. While on non-haze day, cloud process and the heterogeneous reaction
were both the main factors. And the highest proportion of fine mode concentration to
total one was observed for NO<inf>3</inf><sup>-</sup>(79.4%) and SO<inf>4</inf><sup>2-
</sup>(74.4%) on severe haze days respectively. NO<inf>3</inf><sup>-</sup>showed a
bimodal distribution with peaks in the size-bin of 0.43~0.65 μm and 3.3-4.7 μm on
non-haze, slight, mild haze days, and the fine peak moved to 0.65-1.1 μm on moderate
haze days, however the bimodal distribution changed to unimodal distribution with peak at
0.65-1.1 μm on severe hazy days. SO<inf>4</inf><sup>2-</sup>showed a bimodal
distribution with peaks at 0.43-0.65 μm and 2.1-3.3 μm in the non-haze weather,
while the size distribution changed to unimodal distribution on hazy days. But the peak
sizes were different in different intensity of haze, with peak at 0.43-0.65 μm on mild
and slight haze and 0.65-1.1 μm in moderate and severe haze days. NH<inf>4</inf><sup>
+</sup>showed a single peak distribution in the fine mode, with the peak in the particle
size of 0.43-0.65 μm on slight and non-hazy days, and 0.65-1.1 μm on mild, moderate
and severe hazy days. Therefore, haze has a great influence on the size distribution of
SNA. © 2017, Science Press. All right reserved.
Number of references:42
Main heading:Ions
Controlled terms:Aerosols - Atmospheric aerosols - Atmospheric humidity - Ion
chromatography - Nitrates - Nitrogen - Nitrogen oxides - Particle size - Particles
(particulate matter) - Pollution - Size distribution - Sulfur compounds - Visibility -
Wind - Wind effects
Uncontrolled terms:Correlation analysis - Haze - Heterogeneous reactions - High relative
humidities - Inorganic ions - Oxygenation efficiency - Unimodal distribution - Water
soluble inorganic ions
Classification code:443.1 Atmospheric Properties - 741.2 Vision - 801 Chemistry - 804
Chemical Products Generally - 804.2 Inorganic Compounds - 922.2 Mathematical Statistics
- 951 Materials Science
Numerical data indexing:Percentage 2.01e+02%, Percentage 2.40e+02%, Percentage 2.62e+02%,
Percentage 2.95e+01% to 4.55e+01%, Percentage 3.50e+01%, Percentage 4.70e+00%, Percentage
5.26e+02%, Percentage 5.37e+02%, Percentage 5.50e+01%, Percentage 6.20e+01% to 8.09e+01%,
Percentage 7.20e+01%, Percentage 7.44e+01%, Percentage 7.70e+01%, Percentage 7.94e+01%,
Percentage 8.30e+01%, Size 2.10e-06m to 3.30e-06m, Size 3.30e-06m to 4.70e-06m, Size
4.30e-07m to 6.50e-07m, Size 6.50e-07m to 1.10e-06m
DOI:10.13227/j.hjkx.201612042
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 37>
Accession number:20174404325980
Title:Purification of Slightly Salt-alkaline Water Bodies by Microorganism Enhanced
Combined Floating Bed
Authors:Chen, You-Yuan (1); Wu, Ya-Dong (1); Sun, Ping (1); Wu, Dan (1, 2)
Author affiliation:(1) Shandong Provincial Key Laboratory of Marine Environment and
Geological Engineering, College of Environmental Science and Engineering, Ocean
University of China, Qingdao; 266100, China; (2) Urban Planning Bureau Qingdao, Qingdao;
266000, China
Corresponding author:Sun, Ping(sunpingllj@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2850-2858
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to study the purifying effect of combined floating bed constucted by
salinity plant Suaeda salsa and microorganisms on the slightly salt-alkaline water, blank
floating bed A, S. salsa floating bed B, microbes floating bed C and S. salsa
+microorganisms combined floating bed D were established, and slightly salt-alkaline
eutrophic water body (pH 8.5-9.0, salinity 5‰-7‰) was purified under
continuous flow conditions in the laboratory. Results showed that the removal rates of
total nitrogen, total phosphorus, permanganate index by S. salsa floating bed were 32.5%,
14.3% and 28.2%, respectively. And the removal rates of total nitrogen, total phosphorus
and permanganate index by S. salsa+microorganisms combined floating bed D which installed
artificial medium with microorganisms reached 70.5%, 34.7% and 70.8%, respectively, of
which the removal rates of total nitrogen, total phosphorus and permanganate index by
microbial units were 37.7%, 21.6% and 44.5%, respectively. Synergies removal rates of
nitrate nitrogen and total nitrogen by S. salsa + microorganisms combined floating bed
were 12.2% and 0.3%, but there was no synergy in the process of removing ammonia
nitrogen, total phosphorus and permanganate index, which indicated that the synergies of
S. salsa and microorganisms in the combined floating bed were suppressed in slightly
salt-alkaline environment. The high-throughput sequencing technique was adopted to
analyze the microbial community in the floating bed C and D, which indicated that the
abundance and diversity of microbial community in the combined floating bed were higher,
and this was consistent with the result of the higher removal rate of the flotation bed
D. Principal component analysis showed that the microbial degradation was a major factor
in reducing the concentration of pollutants. This study provided a guide for the using of
floating bed in purifying slightly salt-alkaline eutrophic water bodies in coastal area.
© 2017, Science Press. All right reserved.
Number of references:34
Main heading:Microorganisms
Controlled terms:Alkalinity - Biodegradation - Eutrophication - Flotation - Mergers and
acquisitions - Nitrogen - Nitrogen removal - Phosphorus - Principal component analysis -
Purification - Salt removal - Water treatment
Uncontrolled terms:Alkaline water - Floating-bed - Salinity plant - Synergies - Water
purification
Classification code:445.1 Water Treatment Techniques - 461.8 Biotechnology - 461.9
Biology - 801.1 Chemistry, General - 801.2 Biochemistry - 802.3 Chemical Operations -
804 Chemical Products Generally - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 1.22e+01%, Percentage 1.43e+01%, Percentage 2.16e+01%,
Percentage 2.82e+01%, Percentage 3.00e-01%, Percentage 3.25e+01%, Percentage 3.47e+01%,
Percentage 3.77e+01%, Percentage 4.45e+01%, Percentage 7.05e+01%, Percentage 7.08e+01%
DOI:10.13227/j.hjkx.201610128
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 38>
Accession number:20174404325966
Title:Agricultural Ammonia Emission Inventory and Its Spatial Distribution in Sichuan
Province from 2005 to 2014
Authors:Feng, Xiao-Qiong (1, 2); Chen, Jun-Hui (2); Jiang, Tao (2); Qian, Jun (2); Ye,
Hong (2)
Author affiliation:(1) Sichuan Province Environmental Protection Technology Engineering
Co., Ltd., Chengdu; 610041, China; (2) Sichuan Research Institute of Environmental
Protection, Chengdu; 610041, China
Corresponding author:Chen, Jun-Hui(9503062@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2728-2737
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on the urban activity data and emission factors, agricultural ammonia
emission inventory was developed for Sichuan province from year 2005 to 2014. Meanwhile,
its historical trends, spatial distribution and the relationship between agricultural
ammonia emission and PM<inf>10</inf>concentration were analyzed. The results showed that
the highest emission was estimated to be 111.9×10<sup>4</sup>t in 2006, which was
reduced to 95.5×10<sup>4</sup>t in 2014. The interannual variation characteristics
were different for 21 cities in Sichuan, the annual emission of Chengdu, Meishan, Zigong,
Luzhou, Yibin, Panzhihua, Aba and Ganzi changed largely in the study period. Livestock
source and nitrogen fertilizers were the major contributors, accounting for 72%-79% and
20%-27% of the total agricultural NH<inf>3</inf>emission respectively. Hog, poultry and
cow were the major contributors under the category of livestock sources for the most
cities. It's worth mentioning that rabbit was the largest contributor in Zigong,
accounting for 39% of the total livestock NH<inf>3</inf>emission. The urban and sub-urban
areas of Chengdu, the northeastern and southern part of Sichuan were the hot-spots for
agricultural NH<inf>3</inf>emission. In term of spatial distribution, there were higher
emissions in the east of Sichuan and other suburban and rural areas. There was a good
agreement between agricultural NH<inf>3</inf>emission and PM<inf>10</inf>concentration,
indicating agricultural NH<inf>3</inf>emission played an important role in the particle
formation. © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Spatial distribution
Controlled terms:Agriculture - Ammonia - Nitrogen fertilizers
Uncontrolled terms:Agricultural sources - Annual Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.change - Emission inventories
- Historical trends - Interannual variation - Particle formations - PM10 concentration -
Sichuan province
Classification code:804 Chemical Products Generally - 804.2 Inorganic Compounds - 821
Agricultural Equipment and Methods; Vegetation and Pest Control - 921 Mathematics
Numerical data indexing:Percentage 2.00e+01% to 2.70e+01%, Percentage 3.90e+01%,
Percentage 7.20e+01% to 7.90e+01%
DOI:10.13227/j.hjkx.201612217
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 39>
Accession number:20174404325985
Title:Treatment of PTA Wastewater by Modified Anode Microbial Fuel Cell
Authors:Sun, Jing-Yun (1); Fan, Meng-Jie (1); Chen, Ying-Wen (1, 2); Zhu, She-Min (3);
Shen, Shu-Bao (1)
Author affiliation:(1) College of Biological and Pharmaceutical Engineering, Nanjing Tech
University, Nanjing; 210009, China; (2) Jiangsu Engineering Technology Research Center of
Environmental Cleaning Material, School of Environmental Science and Engineering, Nanjing
University of Information Science and Technology, Nanjing; 210044, China; (3) College of
Materials Science and Engineering, Nanjing Tech University, Nanjing; 210009, China
Corresponding author:Chen, Ying-Wen(ywchen@njtech.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2893-2900
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The purpose of this study was to investigate the effect of different modified
anodes on the microbial fuel cell (MFC) and the effect of MFC on the treatment of
refractory wastewater. Based on a single room air cathode, the anode of MFC was modified
by 0.10 g of tourmaline, 75% manganese bioxide/halloysite nanotube (MnO<inf>2</inf>/HNT)
and multi-walled carbon nanotube-carboxyl (MWCNT-COOH), respectively. The results showed
that, the removal rate of purified terephthalic acid (PTA) was higher than 70%, and the
chemical oxygen demand (COD) removal rate was more than 79% in MFC with different
modified anodes. Compared with others, MFC with MWCNT-COOH modified anode obtained the
maximum output voltage and maximum power density, which were 529 mV and 252.73
mW·m<sup>-2</sup>, respectively. © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Microbial fuel cells
Controlled terms:Anodes - Carbon - Carbon nanotubes - Chemical oxygen demand - Electrodes
- Fuel cells - Manganese - Multiwalled carbon nanotubes (MWCN) - Nanotubes - Silicate
minerals - Wastewater treatment - Yarn
Uncontrolled terms:Anode modification - Chemical oxygen demand removals - Maximum output
- Maximum power density - MWCNT-COOH - Purified terephthalic acid - Refractory wastewater
- Tourmaline
Classification code:452.4 Industrial Wastes Treatment and Disposal - 482.2 Minerals -
543.2 Manganese and Alloys - 702.2 Fuel Cells - 714.1 Electron Tubes - 761
Nanotechnology - 804 Chemical Products Generally - 819.4 Fiber Products
Numerical data indexing:Mass 1.00e-04kg, Percentage 7.00e+01%, Percentage 7.50e+01%,
Percentage 7.90e+01%, Surface_Power_Density 2.53e-01W/m2, Voltage 5.29e-01V
DOI:10.13227/j.hjkx.201611198
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 40>
Accession number:20174404325962
Title:Seasonal Variation and Sources of Dicarboxylic Acids and Related Compounds in
PM<inf>10</inf>from Mt. Huangshan
Authors:Meng, Jing-Jing (1, 2); Hou, Zhan-Fang (1, 2); Zhang, Er-Xun (1); Dong, Jie (1);
Liu, Xiao-Di (1); Xing, Ji-Zhao (1); Liu, Jia-Zhen (1)
Author affiliation:(1) School of Environment and Planning, Liaocheng University,
Liaocheng; 252000, China; (2) State Key Laboratory of Loess and Quaternary Geology,
Institute of Earth Environment, Chinese Academy of Sciences, Xi'an; 710061, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2688-2697
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To identify the seasonal variation of dicarboxylic acids and related compounds
in PM<inf>10</inf>from Mt. Huangshan. PM<inf>10</inf>samples were collected during the
summer and winter of 2015, which were then analyzed for dicarboxylic acids,
ketocarboxylic acids, and α-dicarbonyls. The results showed that oxalic acid
(HOOC-COOH, C<inf>2</inf>) was the dominant species in the summer and winter months,
followed by malonic acid (HOOC-CH<inf>2</inf>-COOH, C<inf>3</inf>), and succinic acid
[HOOC-(CH<inf>2</inf>)<inf>2</inf>-COOH, C<inf>4</inf>], being consistent with that in
other high-altitude regions. Most of the diacids were more abundant in the summer months
than in the winter months, while adipic acid (C<inf>6</inf>) and phahalic acid (Ph) were
twice lower in the summer months, suggesting significant impact of anthropogenic
pollution on the wintertime alpine atmosphere. Moreover, as major precursors of
C<inf>2</inf>, glyoxal (Gly) and methylglyoxal (mGly) were also lower in the summer
months than in the winter months, which were opposite to those of the diacids, indicating
that the mountain troposphere was more oxidative in the summer months than in the winter
months. Principal component analysis (PCA) further revealed that the wintertime SOA in
the Mt. Huangshan troposphere mostly originated from the anthropogenic pollutants from
long-distance transport. Conversely, the summertime SOA mostly originated from the
further oxidation of the mountainous biogenic sources. The AIM (Aerosol Inorganic Model)
calculation results showed that the aqueous-phase C<inf>2</inf>production was the primary
mechanism of C<inf>2</inf>formation in ambient aerosol and was driven by acid-catalyzed
oxidation in summer. © 2017, Science Press. All right reserved.
Number of references:41
Main heading:Oxalic acid
Controlled terms:Aerosols - Organic acids - Pollution - Principal component analysis -
Troposphere
Uncontrolled terms:Anthropogenic pollutants - Anthropogenic pollution - Dicarboxylic acid
- Ketocarboxylic acids - Long-distance transport - Mt. Huangshan - PM10 - Seasonal
variation
Classification code:443.1 Atmospheric Properties - 804.1 Organic Compounds - 922.2
Mathematical Statistics
DOI:10.13227/j.hjkx.201612182
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 41>
Accession number:20174404325988
Title:Nitrogen Removal Performance of ANAMMOX Process with K<sup>+</sup>Addition in
Saline Surroundings
Authors:Wu, Guo-Dong (1); Yu, De-Shuang (1); Li, Jin (1); Zhou, Tong (1); Wang, Xiao-Jing
(1)
Author affiliation:(1) School of Environmental Science and Engineering, Qingdao
University, Qingdao; 266071, China
Corresponding author:Li, Jin(ljin0532@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2917-2924
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In view of the poor performance of biological nitrogen removal in saline
wastewater treatment, nitrogen removal of anaerobic ammonium oxidation (ANAMMOX) with
K<sup>+</sup>addition was studied. The results showed that K<sup>+</sup>addition could
strengthen nitrogen removal performance. The effect of K<sup>+</sup>on ANAMMOX process
was mainly divided into four stages. In the adaptive phase (0-2 mmol·L<sup>-
1</sup>), sudden addition of K<sup>+</sup>destroyed the original equilibrium reaction,
but ultimately ANAMMOX bacteria could adapt to the presence of K<sup>+</sup>. Because
K<sup>+</sup>had no obvious effects on anaerobic ammonia oxidation bacteria, the removal
rates of NH<inf>4</inf><sup>+</sup>-N and NO<inf>2</inf><sup>-</sup>-N slightly
increased. In the ascension phase (2-8 mmol·L<sup>-1</sup>), K<sup>+</sup>played a
role in promoting anaerobic ammonia oxidation biological systems, with increasing
concentration of K<sup>+</sup>, the removal rates of NH<inf>4</inf><sup>+</sup>-N and
NO<inf>2</inf><sup>-</sup>-N significantly increased. In the stabilization phase (8-20
mmol·L<sup>-1</sup>), the nitrogen removal rate decreased, but was still higher
than the control without K<sup>+</sup>addition. In the inhibition phase (more than 20
mmol·L<sup>-1</sup>), K<sup>+</sup>largely inhibited anaerobic ammonia oxidation,
and its denitrification efficiency was lower than 0 mmol·L<sup>-1</sup>. In the
whole cycle, when the concentration of K<sup>+</sup>was 8 mmol·L<sup>-1</sup>, it
achieved the best effect, the average removal rates of NH<inf>4</inf><sup>+</sup>-N and
NO<inf>2</inf><sup>-</sup>-N were 89.24% and 84.87%, and NRR was 1.113 kg·
(m<sup>3</sup>·d)<sup>-1</sup>. © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Nitrogen removal
Controlled terms:Ammonia - Bacteria - Biological water treatment - Denitrification -
Nitrogen - Nitrogen oxides - Oxidation - Potassium - Wastewater treatment
Uncontrolled terms:ANAMMOX - Inhibiting effect - Promoting effect - Removal performance -
Saline wastewater
Classification code:445.1 Water Treatment Techniques - 452.4 Industrial Wastes
Treatment and Disposal - 549.1 Alkali Metals - 802.2 Chemical Reactions - 804 Chemical
Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Molar_Concentration 0.00e+00mol/m3, Molar_Concentration 0.00e
+00mol/m3 to 2.00e+00mol/m3, Molar_Concentration 2.00e+00mol/m3 to 8.00e+00mol/m3,
Molar_Concentration 2.00e+01mol/m3, Molar_Concentration 8.00e+00mol/m3 to 2.00e+01mol/m3,
Molar_Concentration 8.00e+00mol/m3, Percentage 8.49e+01%, Percentage 8.92e+01%
DOI:10.13227/j.hjkx.201612259
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 42>
Accession number:20174404325979
Title:Transport of Nitrogen and Phosphorus from Sloping Farmland with Thin Purple Soil
Overlying Rocks
Authors:Xian, Qing-Song (1, 2); Tang, Xiang-Yu (1); Zhu, Bo (1)
Author affiliation:(1) Key Laboratory of Mountain Surface Processes and Ecological
Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences,
Chengdu; 610041, China; (2) University of Chinese Academy of Sciences, Beijing; 100049,
China
Corresponding author:Tang, Xiang-Yu(xytang@imde.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2843-2849
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In a sloping farmland plot (1500 m<sup>2</sup>) of purple soil with underlying
fractured mudrock in Southwest China, field monitoring and sampling campaigns were
undertaken to explore the mechanisms of surface and subsurface transport of nitrogen and
phosphorus upon two representative rain events in the summer of 2015. The results
indicated that: (1) depths of surface runoff and subsurface fracture flow as well as
average colloid export flux were dependent on antecedent soil wetness and rainfall
amount, while discharge dynamics and colloid peak concentration were determined by
rainfall intensity; (2) nitrogen export was mainly in dissolved forms through subsurface
fracture flow, however, phosphorus was mainly transported in particle-associated forms
through surface runoff; (3) the transport of nitrogen and phosphorus was strongly
influenced by hydrological processes, with nitrogen and phosphorus transport being
controlled by fracture flow and surface runoff, respectively. Our findings contribute
significantly to the knowledge of nitrogen and phosphorus export from sloping farmland
with thin soil underlain by fractured rock upon rainfall, and on the other hand this
study provides reliable field data in support of developing effective approaches for
controlling agricultural non-point source pollution of N and P and identifying key
hydrological processes to be manipulated. © 2017, Science Press. All right reserved.
Number of references:23
Main heading:Soil pollution
Controlled terms:Colloids - Farms - Fracture - Nitrogen - Phosphorus - Rain - Runoff -
Soils
Uncontrolled terms:Colloidal particle - Hydrological process - Nitrogen and phosphorus -
Purple soils - Sloping farmlands
Classification code:442.1 Flood Control - 443.3 Precipitation - 483.1 Soils and Soil
Mechanics - 801.3 Colloid Chemistry - 804 Chemical Products Generally - 821
Agricultural Equipment and Methods; Vegetation and Pest Control - 951 Materials Science
Numerical data indexing:Area 1.50e+03m2
DOI:10.13227/j.hjkx.201611230
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 43>
Accession number:20174404325967
Title:Air Pollutant Emission Inventory of Non-road Machineries in Typical Cities in
Eastern China
Authors:Lu, Jun (1, 2); Huang, Cheng (1, 2); Hu, Qing-Yao (1, 2); Yang, Qiang (3); Jing,
Bao-Li (3); Xia, Yang (3); Lu, Bin (3); Tang, Wei (3); Lou, Sheng-Rong (1, 2); Tao, Shi-
Kang (1, 2); Li, Li (1, 2)
Author affiliation:(1) State Environment Protection Key Laboratory of Formation and
Prevention of the Urban Air Complex, Shanghai; 200233, China; (2) Shanghai Academy of
Environmental Sciences, Shanghai; 200233, China; (3) Hangzhou Academy of Environmental
Science, Hangzhou; 310014, China
Corresponding author:Huang, Cheng(huangc@saes.sh.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2738-2746
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on site investigation of non-road vehicles in Shanghai and Hangzhou
located in east China, non-road vehicle emission inventory in 2014 was established in
these cities as well as its emission inventory technology. Characteristics of non-road
vehicle were also analyzed, including classification, type of fuel, power and emission
standard. The results showed that diesel consumed by non-road vehicles was
6.1×10<sup>5</sup>t in Shanghai and 3.2×10<sup>5</sup>t in Hangzhou;
NO<inf>x</inf>emission was 3.09×10<sup>4</sup>t in Shanghai and
1.72×10<sup>4</sup>t in Hangzhou; PM<inf>2.5</inf>emission was
1.41×10<sup>3</sup>t in Shanghai and 8.1×10<sup>2</sup>t in Hangzhou, 2014.
Emissions from excavators and other construction equipment contributed the most in non-
road vehicle emission inventory. Non-road vehicle has become one of the important sources
of urban air pollution, whose NO<inf>x</inf>emissions accounted for 11.1% of all urban
sources in Shanghai and 16.1% in Hangzhou, and accounted for 18.5% of mobile sources in
Shanghai and 32.2% in Hangzhou. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Construction equipment
Controlled terms:Agricultural machinery - Air pollution - Airport ground equipment -
Equipment - Mobile power plants - Nitrogen oxides - Pollution - Roads and streets -
Transportation - Vehicles
Uncontrolled terms:Air pollutant emission - Emission factors - Emission inventories -
Emission standard - Mobile sources - Non-road machineries - On site investigations -
Urban air pollution
Classification code:405.1 Construction Equipment - 406.2 Roads and Streets - 431.4
Airports - 451 Air Pollution - 804.2 Inorganic Compounds - 821.1 Agricultural
Machinery and Equipment - 901 Engineering Profession
Numerical data indexing:Percentage 1.11e+01%, Percentage 1.61e+01%, Percentage 1.85e+01%,
Percentage 3.22e+01%
DOI:10.13227/j.hjkx.201612185
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 44>
Accession number:20174404325965
Title:VOCs Characteristics and Sources Apportionment in Yixing City During the G20 Summit
Authors:Zhang, Lin (1); Zhang, Xiang-Zhi (1); Qin, Wei (1); Mao, Jing-Jing (1); Qin,
Yan-Hong (1); Xie, Wei-Ping (2); Shi, Wen-Ke (2); Chen, Wen-Tai (3)
Author affiliation:(1) Jiangsu Environmental Monitoring Center, Nanjing; 210036, China;
(2) Yixing Environmental Monitoring Station, Yixing; 214200, China; (3) Nanjing
Intelligent Environmental Sci-Tech Co., Ltd., Nanjing; 211800, China
Corresponding author:Zhang, Xiang-Zhi(zhangxzhzz@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2718-2727
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A continuous measurement was conducted in Yixing city urban area from 24th
August to 15th September using TH-300B continuous online GC-MS instrument during G20
summit in Hangzhou, 2016. The VOCs average mass concentrations of alkane, alkene,
aromatic, acetylene, haloalkane hydrocarbons, OVOC and acetonitrile were
11.00×10<sup>-9</sup>, 1.93×10<sup>-9</sup>, 5.78×10<sup>-9</sup>,
1.23×10<sup>-9</sup>, 4.16×10<sup>-9</sup>, 10.37×10<sup>-9</sup>,
0.27×10<sup>-9</sup>, respectively. The photochemical reaction activity was
calculated by using the maximum potential coefficient of Ozone Formation Potential.
Alkene and aromatic hydrocarbons were the most active components of OFP. By applying the
positive matrix factorization (PMF) model, five major factors were extracted to identify
the sources of NMHCs in Yixing city, including industry (42.2%), vehicle exhaust (17.9%),
fuel evaporation (20.8%), paint/solvent usage (7.0%) and plant (12.1%). Combined with the
conditional probability function (CPF) analysis, source of anthropogenic pollution was
related to the distribution of industrial enterprises in the northwest and southeast,
while the plant source was related to the forest hilly region of Southwest Yixing city.
The effect of air pollutant emission reduction showed that the primary emission air
pollutants had declined significantly during the strict control period from 1th to 6th
September in G20 summit, 2016, and the industry proportion was reduced to 30.5%, whereas
the plant proportion increased to 16.8%. © 2017, Science Press. All right reserved.
Number of references:32
Main heading:Air pollution
Controlled terms:Air pollution control - Aromatic compounds - Aromatic hydrocarbons -
Emission control - Factorization - Hydrocarbons - Photochemical reactions - Pollution -
Probability distributions - River pollution - Volatile organic compounds
Uncontrolled terms:Conditional probability function - Hangzhou - Secondary organic
aerosols - Source apportionment - Yangtze river delta
Classification code:451 Air Pollution - 451.2 Air Pollution Control - 453 Water
Pollution - 741.1 Light/Optics - 804.1 Organic Compounds - 921 Mathematics - 922.1
Probability Theory
Numerical data indexing:Percentage 1.21e+01%, Percentage 1.68e+01%, Percentage 1.79e+01%,
Percentage 2.08e+01%, Percentage 3.05e+01%, Percentage 4.22e+01%, Percentage 7.00e+00%
DOI:10.13227/j.hjkx.201612096
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 45>
Accession number:20174404325994
Title:Short-term Effect of Roxithromycin on Abundance and Diversity of Ammonia-Oxidizing
Microorganisms in Activated Sludge
Authors:Gao, Jing-Feng (1); Sun, Li-Xin (1); Fan, Xiao-Yan (1); Pan, Kai-Ling (1); Li,
Ding-Chang (1)
Author affiliation:(1) National Engineering Laboratory for Advanced Municipal Wastewater
Treatment and Reuse Technology, College of Environmental and Energy Engineering, Beijing
University of Technology, Beijing; 100124, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2961-2971
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this study, the short-term effect of roxithromycin (ROX) on the abundance and
diversity of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) based
on amoA gene in activated sludge were investigated by high-throughput sequencing and
quantitative real-time PCR(qPCR). High-throughput sequencing overcomes the drawbacks of
low sequencing depth, significant randomness and great bias of traditional Sanger
sequencing. This approach can provide enough sequencing depth to comprehensively
investigate the sensitive and insensitive ammonia-oxidizing microorganisms under ROX
selective pressure. Lab-scale reactors were operated under ten different ROX levels. The
results indicated that the environmental (0.3-30 μg·L<sup>-1</sup>) and medium
(300 μg·L<sup>-1</sup>and 3000 μg·L<sup>-1</sup>) levels of ROX did
not affect ammonia oxidation, while the higher concentration (5000-12000
μg·L<sup>-1</sup>) of ROX showed a significant negative effect on ammonia
oxidation. The environmental and medium levels of ROX stimulated the growth of AOA,
however, the higher level of ROX decreased the abundance of AOA. In addition, different
levels of ROX (except 0.3 μg·L<sup>-1</sup>) caused the decrease of the
abundance of AOB, which suggested that AOA was less sensitive than AOB under ROX
selective pressure. The results of high-throughput sequencing showed that ROX selective
pressure caused the decrease of the numbers of OTUs for AOA and increase of that for AOB.
The insensitive AOA, accounting for 57.70%-97.81% of the total sequences, were Candidatus
Nitrososphaera gargensis and Candidatus Nitrosoarchaeum koreensis. The insensitive AOB
were Nitrosomonas oligotropha, Nitrosospira multiformis, Nitrosomonas watsonii and
Nitrosomonas halophilus, accounting for 0.76%-5.10% of the total sequences. These results
also indicated that AOA was insensitive to ROX, but AOB was sensitive to ROX. RDA
analyses showed that AOA Ca. Nitrososphaera gargensis, Ca. Nitrosoarchaeum koreensis and
AOB N. oligotropha, N. watsonii, N. halophilus were positively correlated with ROX
concentrations. © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Bacteria
Controlled terms:Ammonia - Calcium - Microorganisms - Polymerase chain reaction -
Throughput
Uncontrolled terms:Activated sludge - Ammonia oxidizing archaea (AOA) - Ammonia oxidizing
bacteria - High-throughput sequencing - Roxithromycin
Classification code:461.9 Biology - 549.2 Alkaline Earth Metals - 801.2 Biochemistry -
804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 3.00e-03kg/m3, Mass_Density 3.00e-07kg/m3 to 3.00e-
05kg/m3, Mass_Density 3.00e-07kg/m3, Mass_Density 5.00e-03kg/m3 to 1.20e-02kg/m3,
Percentage 5.77e+01% to 9.78e+01%, Percentage 7.60e-01% to 5.10e+00%
DOI:10.13227/j.hjkx.201612262
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 46>
Accession number:20174404325974
Title:Characteristics of Water Extractable Organic Nitrogen from Erhai Lake Sediment and
Its Differences with Other Sources
Authors:Li, Wen-Zhang (1, 2, 3, 4); Zhang, Li (2, 3, 4); Wang, Sheng-Rui (1, 2, 3, 4);
Xiao, Shang-Bin (1); Qian, Wei-Bin (2, 3, 4); Xi, Yin (1, 2, 3, 4); Xu, Ke-Chen (2, 3,
4); Shi, Ling-Long (2, 3, 4)
Author affiliation:(1) College of Hydraulic & Environmental Engineering, China Three
Gorges University, Yichang; 443002, China; (2) State Key Laboratory of Environmental
Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences,
Beijing; 100012, China; (3) State Environmental Protection Key Laboratory for Lake
Pollution Control, Research Center of Lake Eco-environment, Chinese Research Academy of
Environmental Sciences, Beijing; 100012, China; (4) Yunnan Key Laboratory of Pollution
Process and Management of Plateau Lake-Watershed, Kunming; 650504, China
Corresponding author:Zhang, Li(zhangli19821115a@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2801-2809
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The 47 samples from Erhai Lake surface sediments were collected in different
seasons. The distribution and structure characteristics of sediment water extractable
organic nitrogen (WEON) were investigated by using the combined techniques of UV-Vis
absorption and three-dimensional excitation-emission matrix spectra (3DEEMs). The
differences in DON of various sources (overlying water, pore water, inflow Rivers and wet
deposition) were explored to analyze its effects on sediment. The results showed that:
(1) the temporal distribution followed the pattern of
summer>spring>autumn>winter, with the spatial WEON distribution of
northern>southern>central. (2) The humic degree of Erhai sediment WEON was
relatively high and mostly composed of fulvic acid, which mainly contained UV-like
humic-like fluorescence peak A and high-excited tryptophan fluorescence peak B. This
indicated that it was mainly affected by terrestrial input and microbial activity. (3)
There were two fluorescent components (C1, C2) in the sediments and other sources of
Erhai Lake. The component C1 was the endogenous visible ultraviolet peak formed by
biodegradation, while the component C2 was the tryptophan peak. The bioavailability of
wet deposition samples was comparatively high, greatly impacting Erhai Lake in heavy
rainfall. The DON bioavailability in the inflow river was the lowest, which was prone to
be accumulated in sediments. (4) The DON component C1 and C2 in overlying water had
significant negative correlation with Erhai sediment WEON contents (r=-0.79, P<0.01;
r=-0.944, P<0.01). This suggested that the overlying water DON components could
indirectly reflect the sediment WEON content of Erhai Lake, namely the higher the
fluorescence components C1 and C2 in overlying water DON were, the lower the sediment
WEON content was. © 2017, Science Press. All right reserved.
Number of references:36
Main heading:Sediments
Controlled terms:Amino acids - Biochemistry - Biodegradation - Deposition - Fluorescence
- Lakes - Nitrogen - Rain - Water absorption
Uncontrolled terms:Dissolved organic nitrogen - EEMs - Excitation emission matrices -
Fluorescence components - PARAFAC - Structure characteristic - Tryptophan fluorescence -
Water extractable organic nitrogen
Classification code:443.3 Precipitation - 483 Soil Mechanics and Foundations - 741.1
Light/Optics - 801.2 Biochemistry - 802.3 Chemical Operations - 804 Chemical Products
Generally - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201612058
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 47>
Accession number:20174404325956
Title:Marine Aerosol Using On-board Aerosol Mass Spectrometry
Authors:Yan, Jin-Pei (1, 2); Chen, Li-Qi (1, 2); Lin, Qi (1, 2); Zhao, Shu-Hui (1, 2);
Li, Lei (3); Zhu, Da-Yong (1)
Author affiliation:(1) Third Institute of Oceanography, State Oceanic Administration,
Xiamen; 361005, China; (2) Key Laboratory of Global Change and Marine-Atmospheric
Chemistry, Xiamen; 361005, China; (3) Institute of Atmospheric Environment Safety and
Pollution Control, Jinan University, Guangzhou; 511443, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2629-2636
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Marine aerosols were measured in real-time by an on-board signal particle
aerosol mass spectrometer (SPAMS) over the Southeast China Sea. The chemical compositions
and size distribution characteristics of aerosol particles were obtained, and the sources
and ion spectra were analyzed. The results showed that particle number concentration
decreased with the distance apart from the coastal area. In the coastal area, the aerosol
compositions were mainly determined by the emissions of industry, such as vessel, traffic
and coal combustion etc. When it was far from the continent, aerosols were mainly
affected by the sea sources. Aerosol particles during the observation period disturbed
singly with a peak diameter value of 0.5 μm. Most of the particles were in the size
range of 0.2 μm to 0.8 μm. High signal intensity of EC with high K<sup>
+</sup>intensity in the positive spectrum and HSO<inf>4</inf><sup>-</sup>intensity in
negative spectrum was present in the marine aerosol over the coastal area. However, the
signals of NO<inf>3</inf><sup>-</sup>and NO<inf>2</inf><sup>-</sup>were absent in the
negative spectrum. The signal intensity of EC was weak in the marine aerosol over the sea
area far from the coastal area. High signal intensity of Na<sup>+</sup>and weak Mg<sup>
+</sup>, Ca<sup>+</sup>and NaCl<sup>+</sup>signals were present in the positive spectrum,
while high signal intensity of MSA<sup>-</sup>, CN<sup>-</sup>, O<sup>-</sup>and
HSO<inf>4</inf><sup>-</sup>were present in negative spectrum which was considered to be
the special ions spectrum of marine biological sources. It indicated that ambient
aerosols over the observation area were influenced not only by the anthropogenic emission
sources but also affected by the marine aerosol formation. © 2017, Science Press.
All right reserved.
Number of references:28
Main heading:Aerosols
Controlled terms:Chemical analysis - Coal combustion - Coal industry - Coastal zones -
Mass spectrometers - Mass spectrometry - Size distribution - Spectrometers
Uncontrolled terms:Aerosol composition - Aerosol mass spectrometers - Aerosol mass
spectrometry - Anthropogenic emissions - Chemical compositions - Marine aerosols - On-
board observation - Particle number concentration
Classification code:471 Marine Science and Oceanography - 503 Mines and Mining, Coal -
521 Fuel Combustion and Flame Research - 524 Solid Fuels - 741.3 Optical Devices and
Systems - 801 Chemistry - 922.2 Mathematical Statistics
Numerical data indexing:Size 2.00e-07m to 8.00e-07m, Size 5.00e-07m
DOI:10.13227/j.hjkx.201612065
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 48>
Accession number:20174404325969
Title:Comparison and Analysis of the Quantitative Methods for Pollutant Sources Load in
Groundwater Contamination Risk Assessment
Authors:Zhao, Peng (1); He, Jiang-Tao (1); Wang, Man-Li (1); Cui, Ya-Feng (2)
Author affiliation:(1) Beijing Key Laboratory of Water Resources and Environment
Engineering, China University of Geosciences (Beijing), Beijing; 100083, China; (2) Mine
Surveying Research Institute, China Coal Technology and Engineering Group Tangshan
Research Institute Co. Ltd., Tangshan; 063012, China
Corresponding author:He, Jiang-Tao(jthe@cugb.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2754-2762
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Groundwater contamination risk assessment is an important basis for the
protection of groundwater resources and the prevention and control of groundwater
pollution. Its evaluation system is usually composed of three elements, which is
vulnerability, pollutant source load and groundwater value. The pollutant source load
plays an important role in risk assessment. Because of the difference among methods for
pollutant sources load quantification, there will inevitably be different demand for the
basic information survey on pollutant sources, as well as unknown impact on the final
assessment results. In order to explore the impact of quantitative methods for pollutant
sources load on groundwater contamination risk assessment, a case study was conducted in
the mesoscale region of alluvial fan in Hutuo River, China. The two representative
methods of grading index and quantitative index assessment systems were applied to
quantify the pollutant sources load, in combination with the same vulnerability and
groundwater value. The results constructed from different risk assessment systems were
compared. The results showed that there were great differences between the two methods of
quantification for pollutant sources load, and the result of contamination risk
assessment also revealed significant differences in the feature of risk valve and the
spatial distribution of the risk levels. The results of contamination risk assessment
were strongly influenced by the choice of quantification for pollutant sources load
methods. The grading index method was suitable for large scale region with lower
precision of basic information and was simple, and the results of assessment had
relatively lower reliability. The quantitative index method was suitable for the
mesoscale and micro-scale region with higher precision of basic information and was
relatively complicated, and the results of assessment had relatively higher reliability.
It was shown that the scale effect of evaluation region had an important influence on the
choice of methods. © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Groundwater pollution
Controlled terms:Contamination - Grading - Groundwater - Groundwater resources -
Pollution - Pollution control - Risk assessment - River pollution
Uncontrolled terms:Comparison and analysis - DRASTIC - Groundwater contamination -
Pollutant sources - Prevention and controls - Protection of groundwater - Quantitative
indices - Scale effects
Classification code:444.2 Groundwater - 453 Water Pollution - 914.1 Accidents and
Accident Prevention
DOI:10.13227/j.hjkx.201612048
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 49>
Accession number:20174404325996
Title:Shift of Microbial Communities During the CO<inf>2</inf>-Brine-Sandstone
Interaction Process
Authors:Wang, Bo-Qiang (1); Li, Chen-Yang (1); Lu, Wei (1); Fan, Hao (1); Zhang, Dong-Zhi
(1); Wang, Zhi (1); Lü, Cong (1); Shen, Fu-Dong (2)
Author affiliation:(1) Key Laboratory of Groundwater Resources and Environment, Ministry
of Education, Jilin University, Changchun; 130021, China; (2) Nonferrous Metal Geological
Exploration and Research Institute of Heilongjiang Province, Harbin; 150046, China
Corresponding author:Lü, Cong(lvcong@jlu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2978-2987
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this study, the dynamic variation of the structure, functionality and
biodiversity of indigenous microorganism during the CO<inf>2</inf>-brine-sandstone
interaction process was investigated using MiSeq sequencing techniques. The results
indicated that some kinds of indigenous microorganisms could grow well under the extreme
condition induced by CO<inf>2</inf>-injection. After injection of CO<inf>2</inf>, the
species of indigenous microorganisms tended to be single and the relative abundance of
Proteobacteria reached up to 99.77% after 6 months. The dominant species varied as
follows: Pseudomonas sp., Citrobacter sp. and Brevundimonas sp. Meanwhile, some special
genera such as Bacillus sp., Hydrogenophaga sp. and Rhizobium sp. with functionality of
iron-reducing and denitrification were found in this study, which may have a potential
effect on the capture and storage of CO<inf>2</inf>. In addition, the Shannon index
decreased from 5.3302 to 1.9465 after injection of CO<inf>2</inf>, suggesting that the
biodiversity reduced significantly. Function and main metabolites analysis of bacteria in
the CO<inf>2</inf>-brine-sandstone interaction process showed that bacteria like Bacillus
sp., Citrobacter sp. and Pseudomonas sp. could enhance CO<inf>2</inf>solubility-trapping
process. Bacteria metabolisms could accelerate the dissolution of feldspar and chlorites,
and facilitate the formation of transition-state calcite and siderite. Otherwise, the
great variation was mainly attributed to the change of condition driven by
CO<inf>2</inf>-brine-sandstone interactions, such as pH and the chemical composition of
brine water (anion and cation), etc. © 2017, Science Press. All right reserved.
Number of references:32
Main heading:Bacteria
Controlled terms:Bacteriology - Biodiversity - Brines - Carbon dioxide - Chlorine
compounds - Microorganisms - Sandstone
Uncontrolled terms:Chemical compositions - CO2 capture - High temperature - Interaction
process - Metagenomics - Microbial communities - Microbial community structures -
Relative abundance
Classification code:454 Environmental Engineering - 461.9 Biology - 482.2 Minerals -
804.2 Inorganic Compounds
Numerical data indexing:Age 5.00e-01yr, Percentage 9.98e+01%
DOI:10.13227/j.hjkx.201612067
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 50>
Accession number:20174404325993
Title:Extensive Green Roof Substrate Composition Based on Sludge Recycling
Authors:Shen, Qing-Ran (1); Li, Tian (1); Cao, Yi (1); Pan, Yu (1)
Author affiliation:(1) College of Environmental Science and Engineering, Tongji
University, Shanghai; 200092, China
Corresponding author:Li, Tian(tianli@tongji.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2953-2960
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The experiment was carried out to study the reasonable composition of stable
anaerobic sludge in the extensive green roof growth substrate by a total of 650 mm
artificial rainfall event. Combined with the N, P leaching problem of the sludge
resources utilization, the quality of the effluent and the change of the nutrient content
of the substrate in the process of application were investigated. The results showed that
the anaerobic sludge could significantly increase the plant biomass and the average
weight gain was 808%. Stable anaerobic sludge caused a large amount of leaching of TP and
water treatment residual could effectively control TP leaching and did not affect the
absorption of P to the plant. During the experiment, the TP of the effluent was reduced
by 68.66%. After stabilization, the effluent TP reached the surface water V standard. The
main form of leached TN was NO<inf>3</inf><sup>-</sup>-N and the leaching of
NO<inf>3</inf><sup>-</sup>-N could be reduced by rice husk charcoal. In the experiment,
the NO<inf>3</inf><sup>-</sup>-N leaching mass was reduced by 28.86% totally. Increasing
the amount of rice husk charcoal helped to control NO<inf>3</inf><sup>-</sup>-N leaching.
SS and COD could be quickly decreased and stabilized. The COD of effluent after
stabilization was about 30 mg·L<sup>-1</sup>, which was better than the standard
of surface water V. Under the condition of actual precipitation with medium and small
rainfall, the anaerobic sludge nutrient retention time should be more than 1 year, which
meets the growing needs of plants for a long time. © 2017, Science Press. All right
reserved.
Number of references:42
Main heading:Effluents
Controlled terms:Charcoal - Leaching - Nutrients - Precipitation (meteorology) - Rain -
Roofs - Stabilization - Substrates - Surface waters - Water absorption - Water quality -
Water treatment
Uncontrolled terms:Artificial rainfall - Digested sludges - Effluent quality - Extensive
green roofs - Sponge city
Classification code:443.3 Precipitation - 444.1 Surface Water - 445.1 Water Treatment
Techniques - 445.2 Water Analysis - 452.3 Industrial Wastes - 524 Solid Fuels - 802.3
Chemical Operations
Numerical data indexing:Age 1.00e+00yr, Mass_Density 3.00e-02kg/m3, Percentage 2.89e+01%,
Percentage 6.87e+01%, Percentage 8.08e+02%, Size 6.50e-01m
DOI:10.13227/j.hjkx.201701196
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 51>
Accession number:20174404325998
Title:Effect of Simulated Climate Warming on Microbial Community and Phosphorus Forms in
Wetland Soils
Authors:Teng, Chang-Yun (1); Shen, Jian-Guo (2); Wang, Zhong (2); Wang, Hang (1); Li,
Hong-Yi (1); Zhang, Zhi-Jian (1, 3)
Author affiliation:(1) College of Environmental and Resource Sciences, Zhejiang
University, Hangzhou; 310058, China; (2) Yuhang District Agricultural Ecology and Plant
Protection Management Station, Hangzhou; 311100, China; (3) China Academy of West Region
Development, Zhejiang University, Hangzhou; 310058, China
Corresponding author:Zhang, Zhi-Jian(zhangzhijian@zju.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:3000-3009
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Microbial community and phosphorus forms in response to simulated climate
warming were studied by high-throughput sequencing and<sup>31</sup>P nuclear magnetic
resonance (<sup>31</sup>P-NMR) respectively, which were from wetland soils in constructed
microcosm columns. The results revealed that relative abundances of Firmicutes,
Clostridia, Clostridiales, Clostridiaceae and Clostridium were significantly decreased by
65%-98%, 69%-87%, 67%-87%, 73%-97% and 74%-93% under warming condition respectively,
suggesting warming had a significant inhibitory effect on the bacterial lineage from
Firmicutes to Clostridium at different taxonomic level. Particularly, principal
coordinate analysis and cluster analysis also demonstrated warming had a significant
effect on microbial community structure with obvious separation of samples between
control and warmed groups from each wetland column site. Phosphorus forms were dominated
by phosphomonoester and orthophosphate in each wetland column soil, which were
significantly increased and decreased by 275% and 20% in XX wetland column soil
respectively. Similarly, phosphomonoester and polyphosphate were also found to be
increased and decreased by 85% and 49% in JH wetland column soil respectively, indicating
that phosphorus forms in response to warming had soil heterogeneity. Canonical
correspondence analysis showed that obvious changes in microbial community composition
had significant effects on phosphorus forms under warming condition. © 2017, Science
Press. All right reserved.
Number of references:35
Main heading:Climatology
Controlled terms:Clostridium - Cluster analysis - Microorganisms - Nuclear magnetic
resonance - Phosphorus - Plants (botany) - Soils - Throughput - Wetlands
Uncontrolled terms:31P-NMR - Climate warming - High-throughput sequencing - Microbial
communities - Microcosm - Phosphorus form - Wetland soils
Classification code:443 Meteorology - 461.9 Biology - 483.1 Soils and Soil Mechanics -
723 Computer Software, Data Handling and Applications - 804 Chemical Products Generally
Numerical data indexing:Percentage 2.00e+01%, Percentage 2.75e+02%, Percentage 4.90e+01%,
Percentage 6.50e+01% to 9.80e+01%, Percentage 7.40e+01% to 9.30e+01%, Percentage 8.50e
+01%
DOI:10.13227/j.hjkx.201601044
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 52>
Accession number:20174404325976
Title:Distribution Characteristics of Drugs of Abuse and Their Metabolites in Aqueous
Environment of Beijing, China
Authors:Zhang, Yan (1); Zhang, Ting-Ting (2); Chen, Wei-Ping (3); Guo, Chang-Sheng (1);
Hua, Zhen-Dong (2); Zhang, Yuan (1); Xu, Jian (1)
Author affiliation:(1) State Key Laboratory of Environmental Criteria and Risk
Assessment, Chinese Research Academy of Environmental Sciences, Beijing; 100012, China;
(2) National Narcotics Laboratory, Drug Intelligence and Forensic Center of the Ministry
of Public Security, Beijing; 100193, China; (3) Research Center for Eco-Environmental
Sciences, Chinese Academy of Sciences, Beijing; 100085, China
Corresponding author:Hua, Zhen-Dong(zdhuapku@gmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2819-2827
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This work investigated the occurrence and distribution of six drugs of abuse and
their metabolites, i.e.methamphetamine (METH), amphetamine (AMP), ketamine (KET),
ephedrine (EPH), methcathinone (MC) and hydroxylimine (HY) in the surface water and
groundwater in Beijing, China. Forty-three samples were collected and analyzed by solid-
phase extraction and high performance liquid chromatography coupled to tandem mass
spectrometry (SPE-HPLC-MS/MS). The result showed that KET, MC and HY were not detected in
any of the analyzed samples. EPH was the most abundant and ubiquitous compound in the
surface water, with the detection frequency of 42% and average concentration of 10.1
ng·L<sup>-1</sup>, followed by METH (25%, average 1.8 ng·L<sup>-1</sup>).
Only trace amount of AMP was detected in some groundwater samples (n.d. -2.2
ng·L<sup>-1</sup>), with detection frequency of 21%. Spatial variation of target
drug concentrations in the aqueous environment was also studied, and the highest levels
of METH and EPH were observed in Liangshui River. Risk assessment suggested that the RQ
values of target compounds were lower than 0.10. Although no toxic effects could be
expected at the current levels, further studies are needed to assess the long-term effect
of drugs of abuse and their metabolites on organisms as well as the joint toxic effect.
© 2017, Science Press. All right reserved.
Number of references:51
Main heading:Surface waters
Controlled terms:Biomolecules - Drug products - Groundwater - High performance liquid
chromatography - Industrial poisons - Liquid chromatography - Mass spectrometry -
Metabolites - Phase separation - Risk assessment
Uncontrolled terms:Average concentration - Beijing - Distribution characteristics - Drugs
of abuse - Environmental risks - Occurrence and distribution - Solid-phase extraction -
Surface water and groundwaters
Classification code:444.1 Surface Water - 444.2 Groundwater - 641.1 Thermodynamics -
801 Chemistry - 801.2 Biochemistry - 914.1 Accidents and Accident Prevention
Numerical data indexing:Mass_Density -2.20e-09kg/m3, Mass_Density 1.01e-08kg/m3,
Mass_Density 1.80e-09kg/m3, Percentage 2.10e+01%, Percentage 2.50e+01%, Percentage 4.20e
+01%
DOI:10.13227/j.hjkx.201612229
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 53>
Accession number:20174404325961
Title:Comparison of Characteristics and Reactive Oxidative Species of PM<inf>2.5</inf>in
Xi'an, China During Haze and Clean Days
Authors:Wang, Kun (1, 2); Han, Yong-Ming (1, 3); Ho, Steven Sai Hang (1); Zhang, Ting
(1); Liu, Sui-Xin (1); Cao, Jun-Ji (1, 3)
Author affiliation:(1) Key Laboratory of Aerosol Chemistry and Physics State Key
Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese
Academy of Sciences, Xi'an; 710061, China; (2) University of Chinese Academy of Sciences,
Beijing; 100049, China; (3) School of Human Settlements and Civil Engineering, Xi'an
Jiaotong University, Xi'an; 710049, China
Corresponding author:Han, Yong-Ming(yongming@ieecas.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:7
Issue date:July 15, 2017
Publication year:2017
Pages:2679-2687
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:PM<inf>2.5</inf>samples were collected in Xi'an, China during haze (2015-11-30-
2015-12-9) and clean days (2016-01-13-2016-01-22). PM<inf>2.5</inf>mass, organic carbon
(OC), elemental carbon (EC), and water-soluble ions (i.e., NH<inf>4</inf><sup>+</sup>,
NO<inf>3</inf><sup>-</sup>, and SO<inf>4</inf><sup>2-</sup>) were measured to investigate
the characteristics of the two typical pollution processes. The result showed that
PM<inf>2.5</inf>masses were (170±47.5) μg·m<sup>-3</sup>and
(48.6±17.9) μg·m<sup>-3</sup>for the haze and clean days, respectively,
with the haze accompanied by low visibility, high humidity, calm wind, and other adverse
weather conditions. The secondary inorganic aerosol (SIA) including NH<inf>4</inf><sup>
+</sup>, NO<inf>3</inf><sup>-</sup>, and SO<inf>4</inf><sup>2-</sup>accounted for
49.8%±13.1% and 19.4%±5.95% of the PM<inf>2.5</inf>mass for the haze and
clean days, respectively. sulfur and nitrogen oxidation ratios (SOR and NOR) on haze days
were 0.282±0.157 and 0.269±0.124, respectively, which were much higher than
those measured on the clean days (0.189±0.057 and 0.077±0.046). The average
concentration of secondary organic carbon (SOC) for the haze days (6.22±3.87)
μg·m<sup>-3</sup>was 5 times of that measured in the clean days
(1.44±1.63) μg·m<sup>-3</sup>. Secondary pollution and adverse weather
conditions were the main reasons for the heavy haze. Finally, the level of particulate-
Reactive Oxygen Species (ROS) was measured by the 2',7'-dichlorofluorescin diacetate
(2',7'-DCFH) fluorescence method, and the average ROS concentration (as
H<inf>2</inf>O<inf>2</inf>) was (4.99±1.54) nmol·m<sup>-3</sup>during haze
days and (0.492±0.356) nmol·m<sup>-3</sup>during clean days. Accumulation
effect and secondary oxidation process may be the main reasons for the increase of ROS
concentration under the heavy haze conditions in Xi'an. Positive correlations (P<0.05)
between the concentrations of ROS and the ions of NO<inf>3</inf><sup>-</sup>and
SO<inf>4</inf><sup>2-</sup>indicated that ROS may participate in secondary oxidation
process of SIA. © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Particles (particulate matter)
Controlled terms:Meteorology - Organic carbon - Oxidation - Oxidation resistance -
Pollution - Water pollution
Uncontrolled terms:Haze - Health effects - Oxidation capacity - PM2.5 - Reactive oxygen
species - Xi'an
Classification code:453 Water Pollution - 802.2 Chemical Reactions - 804.1 Organic
Compounds - 951 Materials Science
DOI:10.13227/j.hjkx.201611045
<RECORD 1>
Accession number:20174804454713
Title:Effect of Extracellular Polymeric Substance (EPS) on the Adsorption of
Perfluorooctane Sulfonate (PFOS) onto Activated Sludge
Authors:Liu, Xin-Tong (1); Yin, Hua (1); Peng, Hui (2); Li, Hao-Rong (1); Yang, Ping-Ping
(1); Cao, Ya-Juan (1)
Author affiliation:(1) Key Laboratory of Pollution Control and Ecosystem Restoration in
Industry Clusters, Guangdong Provincial Engineering and Technology Research Center for
Environmental Risk Prevention and Emergency Disposal, South China University of
Technology, Guangzhou; 510006, China; (2) Department of Chemistry, Jinan University,
Guangzhou; 510632, China
Corresponding author:Yin, Hua(huayin@scut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3435-3441
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The adsorption of PFOS by activated sludge and EPS-removed sludge was conducted
to investigate the adsorption mechanism of activated sludge and the effect of EPS on this
adsorption process. The experimental results indicated that the adsorption process of
PFOS onto activated sludge and EPS-removed sludge fitted the pseudo-second-order model,
with equilibrium absorption capacities (q<inf>e</inf>) of 0.46 mg·g<sup>-
1</sup>and 0.38 mg·g<sup>-1</sup>, respectively. The sorption isotherm accorded
well with the Freundlich, Langmuir, and Temkin models. Chemisorption played an important
role in the adsorption of PFOS on the activated sludge. Ca<sup>2+</sup>and
Cu<sup>2+</sup>contributed to PFOS adsorption on the activated sludge through an ion-
bridging effect. Adsorption efficiency was better on the normal activated sludge compared
to the EPS-removed sludge. FTIR and XPS were used to analyze the variations of functional
groups before and after sorption. The results showed that the amount of functional groups
such as hydroxyl, carboxyl, and amidogen on EPS-removed sludge was lower; however, these
functional groups were found to have participated in the PFOS adsorption process. It is
concluded that carboxyl and amidogen contained in protein of EPS provided reaction sites
for PFOS adsorption, thus EPS components played a vital role in PFOS adsorption on the
activated sludge.<br/> © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Activated sludge process
Controlled terms:Adsorption - Calcium compounds - Copper compounds - Functional groups -
Polymers
Uncontrolled terms:Activated sludge - Adsorption efficiency - Adsorption mechanism -
Equilibrium absorption - Extracellular polymeric substances - Perfluorooctane sulfonates
- PFOS - Pseudo-second order model
Classification code:452.2 Sewage Treatment - 802.3 Chemical Operations - 804.1 Organic
Compounds - 815.1 Polymeric Materials
DOI:10.13227/j.hjkx.201701202
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 2>
Accession number:20174804454679
Title:PM<inf>10</inf>Concentration Forecasting Model Based on Wavelet-SVM
Authors:Wang, Ping (1); Zhang, Hong (2); Qin, Zuo-Dong (1); Yao, Qing-Chen (3); Geng,
Hong (2)
Author affiliation:(1) Institute of Loess Plateau, Shanxi University, Taiyuan; 030006,
China; (2) College of Environmental & Resource Sciences, Shanxi University, Taiyuan;
030006, China; (3) Taiyuan Environment Monitoring Central Station, Taiyuan; 030002, China
Corresponding author:Zhang, Hong(zhanghong@sxu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3153-3161
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:PM<inf>10</inf>is the main air pollutant in Taiyuan, as the city is a heavy
industrial center with coal as its main energy source. Therefore, research on the
prediction of this pollutant's variation and concentration is of great theoretical
significance for air pollution prevention and emergency solutions. The source of
PM<inf>10</inf>is very complex, as it is affected by industrial emissions, vehicle
exhaust, fugitive dust, and many other factors. The emission sources of
PM<inf>10</inf>are difficult to determine accurately. The goal of our research was to
give accurate forecasting results efficiently when only time-series
PM<inf>10</inf>concentrations, and no other exogenous information, is available. A
support vector machine (SVM) enjoys good generalization performance in the
PM<inf>10</inf>concentration forecasting area. Traditionally, an SVM chooses historical
data as the input features in the process of dealing with the time-series data of air
pollutant concentrations. However, data with simple structure and incomplete information
have become the fetter of generalization ability improvement. In this study, the data for
simulation experiments was the PM<inf>10</inf>concentration dataset collected from four
monitoring stations in Taiyuan. The PM<inf>10</inf>concentration time-series one-
dimension data was decomposed into high dimension, constructed by low frequency and high
frequency series using a wavelet transform. The wavelet-SVM forecasting model can be
established by introducing the high-dimension data as the input features. The experiment
results indicate that, contrasted with the traditional SVM, the wavelet-SVM model boasts
higher accuracy for PM<inf>10</inf>concentration prediction. In particular, it captures
the concentration mutational points more accurately and provides information support that
is more effective for atmospheric pollution warning. In addition, with the wavelet-SVM
model, prediction accuracy for the concentration variations was significantly improved
and laws that were more inherent in the PM<inf>10</inf>concentration time series were
revealed.<br/> © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Air pollution
Controlled terms:Forecasting - Industrial emissions - Pollution - Support vector machines
- Time series - Wavelet transforms
Uncontrolled terms:Air pollutant concentrations - Air pollution prevention -
Concentration variation - Forecasting modeling - Generalization ability - Generalization
performance - Incomplete information - Input variables
Classification code:451 Air Pollution - 451.1 Air Pollution Sources - 723 Computer
Software, Data Handling and Applications - 921.3 Mathematical Transformations - 922.2
Mathematical Statistics
DOI:10.13227/j.hjkx.201612194
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 3>
Accession number:20174804454689
Title:Biotic and Abiotic Uptake of Phosphorus in Benthic Sediments of Suburban Streams
Under Intense Human Disturbance Scenario
Authors:Li, Ru-Zhong (1); Ye, Zhou (1); Gao, Su-Di (2); Zheng, Xia (1)
Author affiliation:(1) School of Resources and Environmental Engineering, Hefei
University of Technology, Hefei; 230009, China; (2) College of Civil and Environmental
Engineering, Anhui Xinhua University, Hefei; 230031, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3235-3242
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To reveal the impact of land use change on the phosphorus uptake in benthic
sediments of suburban streams, a headwater stream in the urban fringe of Hefei City was
selected and a set of benthic sediments was collected monthly from the chosen stream
reach from June to November 2016. An incubation method was applied to explore the biotic
and abiotic uptake of phosphorus in benthic sediments under intense human disturbance
scenario. Results showed that the uptake potentials in summer were higher than those in
autumn, both for total (including biotic and abiotic) and abiotic uptake of phosphorus.
Furthermore, both of these uptakes were distinctly higher for the third sampling site,
which is adjacent to the sewage outlet, than those for the other sites. For all six
sampling sites, the contribution rate of biotic uptake of phosphorus was significantly
greater than that of abiotic uptake, both in summer and autumn. The monthly variations in
potentials and contribution rates of phosphorus uptake indicated that intense human
disturbance via land use change had a great impact on the biotic uptake of phosphorus in
benthic sediments of the suburban stream.<br/> © 2017, Science Press. All right
reserved.
Number of references:25
Main heading:Phosphorus
Controlled terms:Land use - Sediments - Sewage - Supply chains
Uncontrolled terms:Benthic sediments - Contribution rate - Headwater stream - Human
disturbances - Land-use change - Phosphorus uptake - Sampling site - Suburban stream
Classification code:403 Urban and Regional Planning and Development - 452.1 Sewage -
483 Soil Mechanics and Foundations - 804 Chemical Products Generally - 912 Industrial
Engineering and Management - 913 Production Planning and Control; Manufacturing
DOI:10.13227/j.hjkx.201702008
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 4>
Accession number:20174804454721
Title:Magnetic Properties of Farmland Soils in Arid Regions in Northwest China and Their
Environmental Implications
Authors:Wang, Xin (1); Xia, Dun-Sheng (1); Wang, Bo (2); Chen, Hong (1); Liu, Hao (1)
Author affiliation:(1) Key Laboratory of Western China's Environmental Systems, College
of Earth and Environment Science, Lanzhou University, Lanzhou; 730000, China; (2)
Nothewest Institute of Eco-Environment and Resources, Chinese Academy of Sciences,
Lanzhou; 730000, China
Corresponding author:Xia, Dun-Sheng(dsxia@lzu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3507-3518
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to understand the feasibility of environmental magnetism methods in
farmland soil pollution monitoring in the northwest arid areas of China, the
environmental magnetic properties of 102 farmland soil samples from four typical
agricultural regions, namely Linze county, Ganzhou district, Minle county, and Shandan
county in Zhangye City were systematically analyzed. The results show that the main
magnetic mineral of farmland soil samples is ferrimagnetic magnetite, and the main
magnetic grain sizes are coarse-grained pseudo single domain (PSD) and multidomain (MD),
mainly between 0.2-1 μm in equivalent diameter. The low frequency magnetic
susceptibility (χ<inf>lf</inf>) value of farmland soil samples ranged from
22.27×10<sup>-8</sup>m<sup>3</sup>·kg<sup>-1</sup>to 188.36×10<sup>-
8</sup>m<sup>3</sup>·kg<sup>-1</sup>, with the average value of
63.85×10<sup>-8</sup>m<sup>3</sup>·kg<sup>-1</sup>. Overall, the magnetic
mineral content of farmland soil samples was low, but it had large spatial variation. The
spatial distribution of the magnetic parameters show that the magnetic mineral contents
in Ganzhou district, Minle county, and Shandan county are higher than in Linze county,
and three relatively high-value areas are present in central Ganzhou district, the
southwest side of Minle county, and the west side of Shandan county. High magnetic value
in central Ganzhou district is mainly controlled by human activities, such as industrial
production, whereas the high magnetic values in the southwest side of Minle county and
west side of Shandan county are more related to strong natural pedogenesis. Therefore,
systematic comprehensive analysis of magnetic parameters can effectively distinguish and
delimit the man-made pollution range in farmland soil and provide a basis for farmland
soil pollution prevention and control.<br/> © 2017, Science Press. All right
reserved.
Number of references:47
Main heading:Farms
Controlled terms:Arid regions - Magnetic properties - Magnetic susceptibility - Magnetism
- Minerals - Pollution - Pollution control - Pollution detection - Soil pollution - Soil
pollution control - Soil surveys - Soils
Uncontrolled terms:Comprehensive analysis - Environmental implications - Environmental
magnetism - Farmland soils - Industrial production - Pollution monitoring - Pollution
prevention and controls - Zhangye City
Classification code:443 Meteorology - 444 Water Resources - 482.2 Minerals - 483.1
Soils and Soil Mechanics - 701.2 Magnetism: Basic Concepts and Phenomena - 821
Agricultural Equipment and Methods; Vegetation and Pest Control
Numerical data indexing:Size 2.00e-07m to 1.00e-06m
DOI:10.13227/j.hjkx.201701128
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 5>
Accession number:20174804454720
Title:Variation in the Temperature Sensitivity of Surface Litter Respiration and Its
Influencing Factors
Authors:Zhang, Yan-Jun (1, 2)
Author affiliation:(1) Key Laboratory of Disaster Monitoring and Mechanism Simulation,
Baoji University of Arts and Sciences, Baoji; 721013, China; (2) College of Geography and
Environmental Engineering, Baoji University of Arts and Sciences, Baoji; 721013, China
Corresponding author:Zhang, Yan-Jun(zhangyanjun@bjwlxy.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3497-3506
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Surface litter respiration is a major component of soil respiration in the
carbon cycle of terrestrial ecosystems, and studying the variation in the temperature
sensitivity of surface litter respiration and its influencing factors is important for
the accurate understanding of the regional soil carbon cycle. In a typical locust
plantation (Robinia pseudoacacia L.) ecosystem in a small watershed in Wang Donggou of
Loess Plateau, China, three surface litter control treatments were established: ①
control treatment, ② litter removal treatment, and ③ doubled litter
treatment, for studying the interannual variation (2009-2013) in the temperature
sensitivity of surface litter respiration and its influencing factors. The interannual
variability in the temperature sensitivity of surface litter respiration was
statistically significant (P<0.05). It ranged from 4.15 in 2012 to 6.67 in 2010, with
mean value of 5.10 and a coefficient of variation of 19% in the control treatment, and
from 1.77 to 6.52, with mean value of 3.36 and a coefficient of variation of 56% in the
doubled litter treatment. It was closely related with annual surface litter biomass,
annual mean soil moisture content, and the interplay between annual surface litter
biomass and annual mean soil moisture content (P<0.01). Moreover, the contribution to
temperature sensitivity of surface litter respiration from soil moisture was greater than
that from surface litter biomass (control treatment: 2.68 vs. 2.04, respectively; doubled
litter treatment: 1.37 vs. 0.69, respectively). Additionally, under the doubled litter
treatment, temperature sensitivity of surface litter respiration decreased by 34%. In the
artificial locust plantation ecosystem, over 50% of surface litter carbon was kept under
the control treatment [215 g·(m<sup>2</sup>·a)<sup>-1</sup>vs. 113
g·(m<sup>2</sup>·a)<sup>-1</sup>], but only 24% of surface litter carbon
was kept under the doubled litter treatment [430 g·(m<sup>2</sup>·a)<sup>-
1</sup>vs. 326 g·(m<sup>2</sup>·a)<sup>-1</sup>], which implied that the
soil carbon reserves in the plantation ecosystem will not increase with an increase of
surface litter biomass in the Loess Plateau, China. Therefore, investigating the
relationships among soil moisture, surface litter biomass, and surface litter biomass
control measures are useful for the accurate understanding of the regional soil carbon
cycle.<br/> © 2017, Science Press. All right reserved.
Number of references:40
Main heading:Sensitivity analysis
Controlled terms:Biomass - Ecology - Ecosystems - Landforms - Moisture - Moisture
determination - Sediments - Soil moisture - Soils
Uncontrolled terms:Control measures - Interannual variability - Interannual variation -
Robinia pseudo-acacia - Soil temperature - Surface litter - Temperature sensitivity -
Terrestrial ecosystems
Classification code:454.3 Ecology and Ecosystems - 481.1 Geology - 483 Soil Mechanics
and Foundations - 483.1 Soils and Soil Mechanics - 921 Mathematics - 944.2 Moisture
Measurements
Numerical data indexing:Percentage 1.90e+01%, Percentage 2.40e+01%, Percentage 3.40e+01%,
Percentage 5.00e+01%, Percentage 5.60e+01%
DOI:10.13227/j.hjkx.201612097
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 6>
Accession number:20174804454711
Title:Effects of Salinity on the Operation of EGSB Reactors and the Anaerobic Granular
Sludge
Authors:Tan, Xiao (1); Huang, Liang (1); Yang, Ping (1); Tu, Yi-Zhou (1)
Author affiliation:(1) College of Architecture and Environment, Sichuan University,
Chengdu; 610065, China
Corresponding author:Yang, Ping(yping63@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3422-3428
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The existence of high concentrations of salinity and organics would have a great
impact on the microorganisms when using bioreactors to treat wastewater. Thus, it is
necessary to find bioreactors resistant to high concentrations of salinity. The effect of
salinity on an expanded granular sludge bed reactor (EGSB) was studied by increasing the
Cl<sup>-</sup>concentration from 0 to 10 000 mg·L<sup>-1</sup>using simulated high
salinity wastewater with a COD volume loading of 3.267 kg·
(m<sup>3</sup>·d)<sup>-1</sup>. The results show no obvious inhibitory effect of
Cl<sup>-</sup>on the microorganism when the concentration of Cl<sup>-</sup>was below 7
500 mg·L<sup>-1</sup>. Above 1.3 m<sup>3</sup>·(m<sup>3</sup>·d)
<sup>-1</sup>volumetric gas production rate was maintained and COD removal rate could
achieved 98.1% when the Cl<sup>-</sup>concentration up to 7 500 mg·L<sup>-
1</sup>while the large particle size of anaerobic granular sludge occupying the majority
of of the system. The anaerobic granular sludge was seriously affected when the Cl<sup>-
</sup>concentration as 10 000 mg·L<sup>-1</sup>. The community structure of the
anaerobic granular sludge was analyzed using high-throughput sequencing when the
Cl<sup>-</sup>concentration was 0 and 5 000 mg·L<sup>-1</sup>. The results show
that the salinity stress produced different dominant groups. The dominant species were
Methanobacterium, Methanospirillum, Methanothrix, and Paludibacter when the Cl<sup>-
</sup>concentration was 5 000 mg·L<sup>-1</sup>, but Methanoregula and Longilinea
were the dominant species when the Cl<sup>-</sup>concentration was 0.<br/> © 2017,
Science Press. All right reserved.
Number of references:26
Main heading:Particles (particulate matter)
Controlled terms:Bioreactors - Granular materials - Microorganisms - Particle size -
Throughput - Wastewater treatment
Uncontrolled terms:Anaerobic granular sludge - COD removal rate - Expanded granular
sludge bed reactor - Gas productions - High-throughput sequencing - Salinity
Classification code:452.4 Industrial Wastes Treatment and Disposal - 461.8
Biotechnology - 461.9 Biology - 951 Materials Science
Numerical data indexing:Mass_Density 0.00e+00kg/m3, Mass_Density 0.00e+00kg/m3 to 1.00e
+01kg/m3, Mass_Density 1.00e+01kg/m3, Mass_Density 5.00e+00kg/m3, Mass_Density 7.50e
+00kg/m3, Percentage 9.81e+01%
DOI:10.13227/j.hjkx.201701147
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 7>
Accession number:20174804454672
Title:Evaluation and Development of a Weighing Chamber by Using Saturated
MgCl<inf>2</inf>Solution
Authors:Li, Xiao-Xiao (1); Zhang, Qiang (1); Deng, Jian-Guo (1); Jiang, Jing-Kun (1);
Hao, Ji-Ming (1)
Author affiliation:(1) School of Environment, Tsinghua University, Beijing; 100084, China
Corresponding author:Jiang, Jing-Kun(jiangjk@tsinghua.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3095-3101
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In recent years, China has suffered a lot from atmospheric particles. Many
studies of particles are based on filters. As a result, the accuracy of filter weighing
is of great importance. A weighing chamber (1.2 m×0.6 m×0.8 m) was developed
and evaluated using saturated MgCl<inf>2</inf>solution with a self-made flow control
system to maintain constant relative humidity (RH). By evaluating the mass change of
blank and aerosol-enriched filters after weighing in different RH, we selected RH of
30%-40% as the range for the proper constant RH. To reach a constant RH, 20
L·min<sup>-1</sup>dry air was put through a RH-constant chamber with
MgCl<inf>2</inf>solution in it. Then, the RH-constant air was put continually into the
weighing chamber. After the weighing chamber reached stable RH, the flow rate was
adjusted to 5 L·min<sup>-1</sup>to maintain the RH. Throughout a one-month test,
the weighing chamber maintained 30.1%-34.0% RH while the outside RH changed a lot. We
weighed 60 filters with this weighing chamber after equilibration for 24 hours. The
standard deviation after three times' weighing was no more than 0.02 mg. compared to
other methods, the RH-controlling method of this weighing chamber was simple, stable,
easy to maintain, and cost effective.<br/> © 2017, Science Press. All right
reserved.
Number of references:27
Main heading:Weighing
Controlled terms:Atmospheric humidity - Chlorine compounds - Cost effectiveness -
Humidity control - Magnesium compounds - Passive filters
Uncontrolled terms:Atmospheric particles - Controlling methods - Cost effective - Filter
- Mass change - MgCl2 - Saturated solutions - Standard deviation
Classification code:443.1 Atmospheric Properties - 703.2 Electric Filters - 911.2
Industrial Economics - 943.3 Special Purpose Instruments
Numerical data indexing:Mass 2.00e-08kg, Percentage 3.00e+01% to 4.00e+01%, Time 8.64e
+04s
DOI:10.13227/j.hjkx.201612265
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 8>
Accession number:20174804454691
Title:Characteristics and the Relationship of Nitrogen and Phosphorus in Soil and Water
of Different Land Use Types of a Small Watershed in the Three Gorges Reservoir Area
Authors:Chen, Cheng-Long (1); Gao, Ming (1, 2); Mu, Zhi-Jian (1, 2); Ni, Jiu-Pai (1, 2);
Qi, Le (1)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Key Laboratory of Eco-environments in Three Gorges
Reservoir Region, Ministry of Education, Chongqing; 400715, China
Corresponding author:Gao, Ming(gaoming@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3254-3263
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Long-term field monitoring data was analyzed regarding the characteristics of
nitrogen and phosphorus in the soil and shallow groundwater of different land use types
in a typical small watershed of the Three Gorges Reservoir area. Furthermore, the
relationships among soil nitrogen and phosphorus contents, concentrations of nitrogen and
phosphorus in shallow groundwater, and slope surface runoff were analyzed. The results
showed that the average contents of TN and NO<inf>3</inf><sup>-</sup>-N in terrace soil
were significantly higher than those in sloping upland soil (P<0.05), for which the
average content of paddy terrace was highest (1.49 g·kg<sup>-1</sup>). The average
contents of TP in the soil of sloping upland and mulberry-sloping upland were
significantly higher than those in the soil of other land types. The average content of
NO<inf>3</inf><sup>-</sup>-N in the soil of dryland terrace was highest of all land use
types and its discrete degree was also largest. The slope land use type had greater
impact on the concentrations of TN and NO<inf>3</inf><sup>-</sup>-N in shallow
groundwater, but it had little influence on TP concentration. In addition, the shallow
groundwater TN concentration and NO<inf>3</inf><sup>-</sup>-N concentration had
significant positive correlation, and the average contribution rate of
NO<inf>3</inf><sup>-</sup>-N to TN in five wells ranged from 67.82% to 78.51%. The
monthly average concentration of TN and NO<inf>3</inf><sup>-</sup>-N in shallow
groundwater changed little, only showing a significant upward trend after the
fertilization stage of the two crops in spring and autumn. The average contents of TN and
NO<inf>3</inf><sup>-</sup>-N in the slope soil were significantly correlated with the TN
and NO<inf>3</inf><sup>-</sup>-N concentrations in the shallow groundwater, but there was
no significant correlation between the TN and NO<inf>3</inf><sup>-</sup>-N concentrations
in the surface runoff. When the slope surface runoff TP concentration was>0.1
mg·L<sup>-1</sup>, the average content of TP had a significant linear correlation
with it. There was a significant power function relationship between the concentrations
of TN and NO<inf>3</inf><sup>-</sup>-N in the surface runoff and concentrations of TN and
NO<inf>3</inf><sup>-</sup>-N in the shallow groundwater, with higher correlation of
NO<inf>3</inf><sup>-</sup>-N concentrations between surface runoff and shallow
groundwater.<br/> © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Land use
Controlled terms:Groundwater - Landforms - Nitrogen - Phosphorus - Reservoirs (water) -
Runoff - Soils - Underground reservoirs - Watersheds
Uncontrolled terms:Land use type - Relationship - Shallow groundwater - Small watersheds
- Soil nutrients - Surface runoffs
Classification code:403 Urban and Regional Planning and Development - 441.2 Reservoirs
- 444.1 Surface Water - 444.2 Groundwater - 481.1 Geology - 483.1 Soils and Soil
Mechanics - 804 Chemical Products Generally
Numerical data indexing:Percentage 6.78e+01% to 7.85e+01%
DOI:10.13227/j.hjkx.201701137
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 9>
Accession number:20174804454685
Title:Sources of Organic Carbon in the Surface Water of Lijiang River
Authors:Zhao, Hai-Juan (1, 2); Xiao, Qiong (2); Wu, Xia (2); Liu, Fan (2); Miao, Ying
(2); Jiang, Yong-Jun (1)
Author affiliation:(1) Chongqing Key Laboratory of Karst Environment, School of
Geographical Sciences, Southwest University, Chongqing; 400715, China; (2) Ministry of
Land and Resources/Guangxi, Institute of Karst Geology, Chinese Academy of Geological
Sciences, Guilin; 541004, China
Corresponding author:Xiao, Qiong(xiaoqiong-8423@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3200-3208
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study selected a larger typical karst basin, that of Lijiang River, as the
research subject and studied the sources of organic carbon in the Lijiang basin in July,
August, and September in 2016 by an isotope tracer method, a correlational analysis
method, and endmember mixture model, using a stable isotope of carbon and the organic
carbon to nitrogen ratio. The results showed the following. ① The spatial
distribution characteristics of DIC concentration were as follows: karst area>karst
and non-karst mixed area>non-karst area. The content of DIC downstream was higher than
upstream. The spatial distribution of DIC concentration was mainly controlled by the
distribution of carbonate rocks in the Lijiang basin. ② DOC was the main part of
TOC in the Lijiang basin. TOC was mainly derived from the primary productivity of aquatic
organisms. The spatial distribution characteristics of autochthonous organic carbon
content were as follows: karst area>karst and non-karst mixed area>non-karst area,
which may be related to more lush aquatic plants in the karst area than in the non-karst
area and the carbonic anhydrase activity in the karst area being higher than in the non-
karst area. The content of autochthonous organic carbon in the TOC ranged from 1.02 to
5.14 mg·L<sup>-1</sup>, with an average of 2.54 mg·L<sup>-1</sup>. There
was no significant spatial difference of the proportion of autochthonous organic carbon
in the TOC; it ranged from 51.68% to 85.99%, with an average of 73.07%. ③ The POC
concentration, the content of autochthonous organic carbon in the POC, and the proportion
of autochthonous organic carbon in the POC had no significant spatial differences. The
main source of POC was allochthonous organic carbon, and the content of autochthonous
organic carbon in the POC ranged from 0.01 to 0.16 mg·L<sup>-1</sup>, with an
average of 0.05 mg·L<sup>-1</sup>. The proportion of autochthonous organic carbon
in the POC ranged from 3.69% to 41.94%, with an average of 17.31%. (4) The spatial
distribution of the content of DOC and autochthonous organic carbon in the DOC are as
follows: karst area>karst and non-karst mixed area>non-karst area. DOC mainly came
from the primary productivity of aquatic organisms. The content of autochthonous organic
carbon of the DOC ranged from 0.97 to 5.10 mg·L<sup>-1</sup>, with an average of
2.48 mg·L<sup>-1</sup>. The spatial distribution of the proportion of
autochthonous organic carbon in the DOC had no obvious difference and ranged from 54.43%
to 94.69%, with an average of 79.51%. Studying the influence of aquatic photosynthetic
organisms on organic carbon in rivers can provide basis for scientific problem solution
of the stability of karst carbon sinks.<br/> © 2017, Science Press. All right
reserved.
Number of references:26
Main heading:Organic carbon
Controlled terms:Aquatic organisms - Biology - Carbonic anhydrase - Elementary particle
sources - Isotopes - Landforms - Photosynthesis - Phytoplankton - Rivers - Spatial
distribution - Surface waters
Uncontrolled terms:Carbon-to-nitrogen ratio - Dissolved organic carbon - Distribution
characteristics - Lijiang basin - Organic carbon contents - Particulate organic carbon -
Photosynthetic organisms - Stable isotopes
Classification code:444.1 Surface Water - 461.9 Biology - 471 Marine Science and
Oceanography - 481.1 Geology - 741.1 Light/Optics - 801.2 Biochemistry - 804.1
Organic Compounds - 921 Mathematics
Numerical data indexing:Mass_Density 1.00e-05kg/m3 to 1.60e-04kg/m3, Mass_Density 1.02e-
03kg/m3 to 5.14e-03kg/m3, Mass_Density 2.48e-03kg/m3, Mass_Density 2.54e-03kg/m3,
Mass_Density 5.00e-05kg/m3, Mass_Density 9.70e-04kg/m3 to 5.10e-03kg/m3, Percentage
1.73e+01%, Percentage 3.69e+00% to 4.19e+01%, Percentage 5.17e+01% to 8.60e+01%,
Percentage 5.44e+01% to 9.47e+01%, Percentage 7.31e+01%, Percentage 7.95e+01%
DOI:10.13227/j.hjkx.201701176
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 10>
Accession number:20174804454693
Title:New Bromated Phenolic Disinfection Byproducts: Mechanism of Their Decomposition
During Chlorination
Authors:Li, Huan (1); Li, Zheng-Kui (1); Li, Ai-Min (1); Zhou, Qing (1); Wang, Ying (1);
Pan, Yang (1)
Author affiliation:(1) State Key Laboratory of Pollution Control and Resource Reuse,
School of the Environment, Nanjing University, Nanjing; 210023, China
Corresponding author:Pan, Yang(panyang@nju.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3273-3280
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Recently, 13 new phenolic halogenated disinfection by-products (DBPs) have been
reported in chlorinated drinking water and have been classified into four groups:
dihalo-4-hydroxybenzaldehydes, dihalo-4-hydroxybenzoic acid, dihalo-salicylic acids, and
trihalo-phenols. In this work, the four fully brominated species (3, 5-dibromo-4-
hydroxybenzoic acid, 3, 5-dibromosalicylic acid, 2, 4, 6-tribromophenol, and 3, 5-
dibromo-4-hydroxybenzaldehyde) were selected as representatives, and the decomposition
mechanism of these new DBPs during chlorination was studied with the aid of ultra
performance liquid chromatography/electrospray ionization triple-quadrupole mass
spectrometry (precursor ion scan, multiple reaction monitoring, and product ion scan).
Except for 3, 5-dibromosalicylic acid, the new DBPs were not stable and could be finally
decomposed to haloacetic acids through multistep substitution, hydrolysis, and oxidation.
Various decomposition intermediate DBPs were detected, including a new group of
halogenated DBPs with cyclic structures (trihalo-hydroxyl-cyclopetene-diones).<br/>
© 2017, Science Press. All right reserved.
Number of references:24
Main heading:Decomposition
Controlled terms:Byproducts - Chlorination - Disinfection - Halogenation - Ionization of
liquids - Liquid chromatography - Mass spectrometry - Potable water - Salicylic acid
Uncontrolled terms:2 ,4 ,6-tribromophenol - Chlorinated drinking waters - Decomposition
mechanism - Disinfection by-product - Disinfection byproducts - Multiple reaction
monitoring - Triple-quadrupole mass spectrometry - Ultra performance liquid
chromatography
Classification code:444 Water Resources - 801 Chemistry - 802.2 Chemical Reactions -
804 Chemical Products Generally - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201612221
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 11>
Accession number:20174804454680
Title:Emission Factors and Preliminary Emission Estimates of Air Pollutants from Ships at
Berth in the Guangzhou Port
Authors:Huang, Xue-Liang (1, 2); Zhang, Zhou (2); Yang, Wei-Qiang (2, 4); Li, Sheng (2,
4); Zhu, Ming (2, 4); Fang, Hua (2, 4); He, Jun-Jie (3); Chen, Jun-Wen (3); Wan, Cheng-
Hao (3); Zhang, Yan-Li (2); Liu, Guo-Guang (1); Huang, Zu-Zhao (3); Wang, Yu-Jun (3);
Wang, Xin-Ming (2, 5)
Author affiliation:(1) School of Environmental Science and Engineering, Guangdong
University of Technology, Guangzhou; 510006, China; (2) Guangdong Key Laboratory of
Environmental Resources Utilization and Protection, Guangzhou Institute of Geochemistry,
Chinese Academy of Sciences, Guangzhou; 510640, China; (3) Guangzhou Environmental
Monitoring Center, Guangzhou; 510030, China; (4) University of Chinese Academy of
Sciences, Beijing; 100049, China; (5) Center for Excellence in Regional Atmospheric
Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen; 361021,
China
Corresponding author:Wang, Xin-Ming(wangxm@gig.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3162-3168
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Three large container vessels over a tonnage of 40×10<sup>3</sup>t at
berth in the Guangzhou Port were selected for determination of air pollutants in exhausts
from auxiliary engines to obtain fuel-based emission factors (EFs). The fuel-based EFs
for vessels A, B, and C at berth were 3 096, 3 031, and 3 028 g·kg<sup>-1</sup>,
respectively, for CO<inf>2</inf>; 61.8, 19.9, and 27.0 g·kg<sup>-1</sup>for
NO<inf>x</inf>; 8.0, 4.0, and 5.3 g·kg<sup>-1</sup>for CO; 31.4, 41.9, and 56.7
g·kg<sup>-1</sup>for SO<inf>2</inf>; 2.4, 1.1, and 1.5 g·kg<sup>-1</sup>for
PM<inf>2.5</inf>; and 0.13, 0.09, and 0.17 g·kg<sup>-1</sup>for VOCs. With the
basic information about ship types, arrival times, and berthing times, the emissions of
NO<inf>x</inf>, CO, SO<inf>2</inf>, PM<inf>2.5</inf>, and NH<inf>3</inf>from a ship at
berth in the Guangzhou Port in 2014 were roughly estimated to be 1 231, 226, 1 229, 47.6
and 0.04 t, respectively, with ships with a tonnage of 10×10<sup>3</sup>-
50×10<sup>3</sup>t sharing the largest burdens, followed by ships over a tonnage of
50×10<sup>3</sup>t. Estimated emission of VOCs from ships at berth in the Guangzhou
Port was about 33.6 t, with vessels below a tonnage of 3×10<sup>3</sup>t
contributing the most.<br/> © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Ships
Controlled terms:Air engines - Air pollution - Nitrogen oxides - Pollution
Uncontrolled terms:Air pollutants - Arrival time - Auxiliary engines - Container vessel -
Emission factors - Guangzhou - Ship emissions
Classification code:451 Air Pollution - 641 Heat and Mass Transfer; Thermodynamics -
804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201612212
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 12>
Accession number:20174804454676
Title:Characteristics and Sources of Elements in Atmospheric Dust Fall in Zhuzhou City,
Central China
Authors:Wang, Shi-Hao (1, 2); Zhang, Kai (2); Chai, Fa-He (2); Zhong, Xue-Cai (3); Zhou,
Guang-Zhu (1); Yang, Qing (1, 2); Ke, Xin-Shu (2)
Author affiliation:(1) College of Chemical and Environmental Engineering, Shandong
University of Science and Technology, Qingdao; 266590, China; (2) State Key Laboratory of
Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental
Sciences, Beijing; 100012, China; (3) Zhuzhou Environment Monitoring Centre, Zhuzhou;
412000, China
Corresponding author:Zhang, Kai(zhangkai@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3130-3138
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To study the concentration characteristics as well as sources of elements and
heavy metal pollution in atmospheric dust fall in Zhuzhou City, 144 samples from 12 sites
in the Zhuzhou urban area were collected from January to December in 2012 and 28 kinds of
elements in the samples were analyzed. The results showed that the dust fall quantities
of the industrial areas and mixed commercial and residential (MCR) areas were,
respectively, 89.46 g·m<sup>-2</sup>and 33.20 g·m<sup>-2</sup>and the range
of all sample points was 23.14-114.67 g·m<sup>-2</sup>. There were 10 elements
(Na, Mg, Al, K, Ca, Ti, Mn, Fe, Zn, Pb) in the industrial areas as well as 8 elements in
the MCR areas, for which the contents greatly exceeded 1 000 mg·m<sup>-1</sup>in
the atmospheric dust fall. The Zn and Pb contents exceeded 10 000 mg·kg<sup>-
1</sup>in the dust fall of the industrial areas, which were far higher than those in the
Earth's crust. The main sources of dust fall in Zhuzhou City were metal smelting, shallow
ground dust, vehicle emissions, construction dust, and industrial production with
specific elements (Mo, Ba). Correlation analysis, principal component analysis (PCA), and
analysis of transportation characteristics showed that 13 elements (Mn, Fe, Co, Cu, Zn,
As, Se, Ag, Cd, Sn, Sb, Tl, Pb) in dust fall mainly came from waste gas emissions of
industrial areas in Zhuzhou, in which 7 heavy metal elements (Cu, Zn, As, Ag, Cd, Sb, Pb)
caused serious pollution. The contents of heavy metals in the industrial areas were 7.4
to 4 079.4 times the contents defined in China soil elements background values, whereas
those in the MCR areas were 3.6 to 1 413.4 times the soil background values. Cd was the
highest background ratio element. The degree of contamination was clearly higher in the
industrial areas than in the MCR areas.<br/> © 2017, Science Press. All right
reserved.
Number of references:30
Main heading:Copper
Controlled terms:Air pollution - Cadmium - Dust - Elementary particle sources - Gas
emissions - Heavy metals - Industrial emissions - Land reclamation - Lead - Magnesium -
Manganese - Metal analysis - Meteorology - Molybdenum - Pollution - Principal component
analysis - Silver - Smelting - Structural geology - Titanium - Urban growth - Zinc
Uncontrolled terms:Atmospheric dust - Correlation analysis - Elemental compositions -
Heavy metal elements - Heavy metal pollution - Industrial production - Vehicle emission -
Zhuzhou City
Classification code:403.1 Urban Planning and Development - 442.2 Land Reclamation - 451
Air Pollution - 451.1 Air Pollution Sources - 481.1 Geology - 531 Metallurgy and
Metallography - 533.2 Metal Refining - 542.2 Magnesium and Alloys - 542.3 Titanium and
Alloys - 543.2 Manganese and Alloys - 543.3 Molybdenum and Alloys - 544.1 Copper -
546.1 Lead and Alloys - 546.3 Zinc and Alloys - 547.1 Precious Metals - 549.2
Alkaline Earth Metals - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline
Earth Metals - 922.2 Mathematical Statistics
Numerical data indexing:Linear_Density 1.00e-03kg/m
DOI:10.13227/j.hjkx.201609174
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 13>
Accession number:20174804454677
Title:Atmospheric Pollutant Emission Characteristics from the Cooking Process of
Traditional Beijing Roast Duck
Authors:Xu, Min (1); He, Wan-Qing (2); Nie, Lei (2); Han, Li-Hui (1); Pan, Tao (2); Shi,
Ai-Jun (2)
Author affiliation:(1) Key Laboratory of Beijing on Regional Air Pollution Control,
College of Environmental and Energy Engineering, Beijing University of Technology,
Beijing; 100124, China; (2) Beijing Key Laboratory of Urban Atmospheric Volatile Organic
Compounds Pollution Control and Application, Beijing Municipal Research Institute of
Environmental Protection, Beijing; 100037, China
Corresponding author:Han, Li-Hui(hlh@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3139-3145
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:As one of the characteristics of traditional food in Beijing, there is a
significant difference between roast duck and other foods in the cooking process, in that
fruit trees are used as fuel in the former. However, system research about the emission
characteristics of this food source has not been done domestically. In order to grasp
such food source emission characteristics and provide technical basis for pollution
control, we selected the representative roast duck restaurant in Beijing and studied the
emission characteristics of atmospheric pollutants in the cooking process of roast duck.
The results showed that the emission concentrations of cooking fumes, particulate matter,
volatile organic compounds (VOCs), and aldehyde and ketone compounds were
(0.74±0.45), (15.32±7.93), (7.60±3.41), and (1.22±0.59)
mg·m<sup>-3</sup>, respectively. The emission concentration of particulate matter
was much higher than that of cooking fumes. The VOC component composition was very
complex, containing alkanes, alkenes, aromatic hydrocarbons, and oxygen VOCs, such as
aldehydes, ketones, alcohols, ester compounds, and halogenated hydrocarbons, with the
highest concentrations of 3-methylfuran, ethanol, and methyl acetate. The main components
of aldehyde and ketone compounds were acetaldehyde, formaldehyde, and acrolein, of which
C1-C3 compounds were 72.27%.<br/> © 2017, Science Press. All right reserved.
Number of references:23
Main heading:Thermal processing (foods)
Controlled terms:Aldehydes - Aromatic hydrocarbons - Calcination - Cooking - Hydrocarbons
- Ketones - Orchards - Organic compounds - Particulate emissions - Pollution - Pollution
control - Volatile organic compounds
Uncontrolled terms:Atmospheric pollutant emissions - Atmospheric pollutants - Beijing
roast ducks - Emission characteristics - Emission concentration - Halogenated
hydrocarbons - Ketone compound - Particulate Matter
Classification code:451.1 Air Pollution Sources - 802.3 Chemical Operations - 804.1
Organic Compounds - 821.3 Agricultural Methods - 822.2 Food Processing Operations
Numerical data indexing:Percentage 7.23e+01%
DOI:10.13227/j.hjkx.201701165
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 14>
Accession number:20174804454704
Title:Effect of pH Shock on Nitrogen Removal Performance of Marine Anaerobic Ammonium-
Oxidizing Bacteria Treating Saline Wastewater
Authors:Yu, De-Shuang (1); Zhou, Tong (1); Li, Jin (1); Wang, Xiao-Xia (1); Wu, Guo-Dong
(1); Wang, Xiao-Jing (1)
Author affiliation:(1) School of Environmental Science and Engineering, Qingdao
University, Qingdao; 266071, China
Corresponding author:Li, Jin(ljin0532@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3369-3376
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The effect of pH shock on nitrogen removal performance of marine anaerobic
ammonium-oxidizing bacteria (MAAOB) treating saline wastewater was studied by employing
an ASBR reactor. Dynamic characteristics of the MAAOB were simulated by the Andrew model
and Ratkowsky model. The results indicated that the reactor had the best nitrogen removal
efficiency when the pH value was 7-8. The nitrogen removal rate (NRR) was
(0.30±0.04) kg·(m<sup>3</sup>·d)<sup>-1</sup>, and the total
nitrogen removal efficiency (TNRE) was (76.73±5.74)%. When the pH value was 8.5,
FA had a mean concentration of 14.22 mg·L<sup>-1</sup>and little effect on
nitrogen removal. The NRR was (0.30±0.02) kg·(m<sup>3</sup>·d)
<sup>-1</sup>. However, NO<inf>2</inf><sup>-</sup>-N accumulated and it was not
completely removed. When the pH values were 6.5 and 9, the concentrations of FA were 0.22
mg·L<sup>-1</sup>and 37.84 mg·L<sup>-1</sup>, respectively, the NRRs were
(0.10±0.02) and (0.15±0.02) kg·(m<sup>3</sup>·d)<sup>-
1</sup>, and the TNREs were (23.04±9.88)% and (42.12±5.52)%. The tolerance
of the MAAOB in alkaline condition was stronger than that in acidic condition. The Andrew
model was modified to determine the relationship between NRR and FA. Other parameters
such as NRR<inf>max</inf>, k<inf>S</inf>, and k<inf>I</inf>were also achieved
simultaneously. These are key to describing the nitrogen removal process of MAAOB.<br/>
© 2017, Science Press. All right reserved.
Number of references:28
Main heading:Nitrogen removal
Controlled terms:Alkalinity - Bacteria - Efficiency - Enzyme kinetics - Nitrogen - pH -
pH effects - Wastewater treatment
Uncontrolled terms:Ammonium oxidizing bacteria - Biological nitrogen removal - Dynamic
characteristics - Nitrogen removal efficiency - Nitrogen removal process - Nitrogen
removal rates - pH shocks - Saline wastewater
Classification code:452.4 Industrial Wastes Treatment and Disposal - 801.1 Chemistry,
General - 804 Chemical Products Generally - 913.1 Production Engineering
Numerical data indexing:Mass_Density 1.42e-02kg/m3, Mass_Density 2.20e-04kg/m3,
Mass_Density 3.78e-02kg/m3
DOI:10.13227/j.hjkx.201702023
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 15>
Accession number:20174804454688
Title:Comparison of Identification Methods of Main Component Hydrochemical Anomalies in
Groundwater: A Case Study of Liujiang Basin
Authors:Zhang, Xiao-Wen (1); He, Jiang-Tao (1); Peng, Cong (1); Zhang, Chang-Yan (1); Ni,
Ze-Hua (1)
Author affiliation:(1) Beijing Key Laboratory of Water Resources and Environmental
Engineering, School of Water Resources and Environment, China University of Geosciences
(Beijing), Beijing; 100083, China
Corresponding author:He, Jiang-Tao(jthe@cugb.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3225-3234
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Identification of chemical composition anomalies in groundwater is an important
basis for establishing groundwater background values and quantifying the degree of
influence of human activities. The main component anomaly identification by five kinds of
hydrochemical diagrams has achieved good results in the past. However, this method is too
complex to be used widely. In order to simplify the five kinds of hydrochemical diagrams,
the Durov diagram was used to replace the five kinds of hydrochemical diagrams to
identify the main component anomalies of groundwater, with the Liujiang basin employed as
a verification example. The effects of seven kinds of anomaly identification methods
combined by hydrochemical diagrams and mathematical statistics methods were compared, and
the reliability of these methods were tested in the study. The result indicated that the
combination of mathematical statistics and hydrochemical diagrams method can identify the
groundwater anomalies better than either used alone. The method of the Pauta criterion
+five kinds of hydrography diagrams and the Pauta criterion+the Durov diagram were the
best to identify the major component anomalies of groundwater. This shows that the Durov
diagram can effectively replace the five kinds of hydrochemical diagrams for anomaly
recognition of groundwater, which not only preserves the scientificity of hydrochemical
anomaly identification, but also greatly simplifies the process of calculation.<br/>
© 2017, Science Press. All right reserved.
Number of references:30
Main heading:Hydrochemistry
Controlled terms:Graphic methods - Groundwater - Groundwater geochemistry - Statistics
Uncontrolled terms:Abnormal recognition - Anomaly identification - Chemical compositions
- Durov diagram - Identification method - Liujiang basin - Mathematical statistics
methods - Pauta criterion
Classification code:444.2 Groundwater - 481.2 Geochemistry - 922.2 Mathematical
Statistics
DOI:10.13227/j.hjkx.201702100
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 16>
Accession number:20174804454681
Title:Influence of Dust Events on the Concentration and Size Distribution of
Microorganisms in Bioaerosols
Authors:Li, Hong-Tao (1); Qi, Jian-Hua (1); Dong, Li-Jie (1); Gao, Dong-Mei (1)
Author affiliation:(1) Key Laboratory of Marine Environment and Ecology, Ministry of
Education, Ocean University of China, Qingdao; 266100, China
Corresponding author:Qi, Jian-Hua(qjianhua@ouc.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3169-3177
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to study the influence of dust events on the airborne microbes in
atmospheric bioaerosols, bioaerosol samples were continuously collected from March to
April 2015 during two dust events using size-fractionated bioaerosol samplers in Lanzhou
and Qingdao. The concentration of airborne microbes were measured using an
epifluorescence microscope after staining with DAPI (4', 6-diamidino-2-phenylindole). The
results showed that the concentration of airborne microbes increased significantly during
the period of dust (P<0.05). The average concentrations of airborne microbes on sunny
days were 5.61×10<sup>5</sup>cells·m<sup>-3</sup>and
2.08×10<sup>5</sup>cells·m<sup>-3</sup>in Lanzhou and Qingdao, respectively,
whereas the mean concentrations on dusty days were 14.8 times and 6.42 times those on
sunny days, respectively. The concentration of airborne microbes presented a bimodal size
distribution on sunny days in Lanzhou and Qingdao, with a peak at>7.0 μm and the
lowest values ranging from 4.7 μm to 7.0 μm. However, the second peak appeared at
3.3-4.7 μm and 1.1-2.1 μm in Lanzhou and Qingdao, respectively. The size
distribution of airborne microbes changed during the dust period. The size distribution
of microbes still presented a bimodal distribution in Lanzhou; however, one peak shifted
from>7.0 μm to 1.1-2.1 μm. The size distribution in Qingdao changed from a
bimodal distribution to a skewed distribution with the predominant fraction in coarse
mode. The background values of microbial load in PM<inf>10</inf>before the dust were 2
224 cells·μg<sup>-1</sup>and 1 550 cells·μg<sup>-1</sup>in Lanzhou
and Qingdao, respectively, and the highest value of such increased significantly to 26
442 cells·μg<sup>-1</sup>and 10 250 cells·μg<sup>-1</sup>during the
dust events, respectively. This demonstrated that the high concentration of microbes in
the dust events resulted not only from increased atmospheric particles but also from dust
source and transportation path along with long-range transported dust particles.<br/>
© 2017, Science Press. All right reserved.
Number of references:26
Main heading:Dust
Controlled terms:Aerosols - Bacteria - Cells - Cytology - Microorganisms - Size
distribution
Uncontrolled terms:Atmospheric particles - Average concentration - Bimodal distribution -
Bimodal size distribution - Bioaerosols - Epifluorescence microscope - Microbial
concentrations - PM10
Classification code:451.1 Air Pollution Sources - 461.2 Biological Materials and Tissue
Engineering - 461.9 Biology - 922.2 Mathematical Statistics
Numerical data indexing:Size 1.10e-06m to 2.10e-06m, Size 3.30e-06m to 4.70e-06m, Size
4.70e-06m to 7.00e-06m
DOI:10.13227/j.hjkx.201701011
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 17>
Accession number:20174804454696
Title:Spatiotemporal Variations of Chlorophyll a and Its Relationship to Environmental
Factors in Shiyan Reservoir
Authors:Song, Yun-Long (1); Zhang, Jin-Song (1); Guo, Xiao-Ya (2); Zhu, Jia (3); Wang, Li
(4); Tao, Yi (5); Zhang, Li (6)
Author affiliation:(1) School of Civil and Environment Engineering, Harbin Institute of
Technology Shenzhen Graduate School, Shenzhen; 518055, China; (2) Shandong Province
Jiaodong Water Transfer Bureau, Ji'nan; 250100, China; (3) School of Architectural and
Environmental Engineering, Shenzhen Polytechnic, Shenzhen; 518055, China; (4) Shenzhen
Water Quality Testing Center, Shenzhen; 518055, China; (5) Graduate School at Shenzhen,
Tsinghua University, Shenzhen; 518055, China; (6) Shenzhen National Climate Observatory,
Shenzhen; 518040, China
Corresponding author:Zhang, Jin-Song(Zhangjinsong@waterchina.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3302-3311
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The spatial-temporal characteristics of chlorophyll a concentration[ρ(Chla)]
were analyzed in Shiyan Reservoir, based on the monthly monitoring data from April 2013
to June 2014. The correlation between ρ(Chla) and key environmental factors were also
studied using correlation analysis and canonical correspondence analysis.The results
showed that ρ(TChla) was 9.59-123.29 μg·L<sup>-1</sup>, with an average of
52.03 μg·L<sup>-1</sup>. The ρ(Chla) of cyanobacteria was 4.54-76.30
μg·L<sup>-1</sup>, with an average of 28.39 μg·L<sup>-1</sup>. The
ρ(Chla) of bacillariophyta was 3.16-46.09 μg·L<sup>-1</sup>, with an
average of 15.02 μg·L<sup>-1</sup>. The ρ(Chla) of chlorophyta was 0.77-
26.2 μg·L<sup>-1</sup>, with an average of 8.62 μg·L<sup>-1</sup>.
Cyanobacteria was the primary species from April to December in 2013 and May, June in
2014 while bacillariophyta was the primary species in other months. The spatial
heterogeneity of ρ(Chla) was unconspicuous and ρ(Chla) decreased gradually from
south to north. There was a risk of algal blooming for the whole reservoir during flood
season and south part of reservoir in autumn. The storm runoff pollutant washout was the
leading cause of the spatial heterogeneity of ρ(Chla) in Shiyan Reservoir. Analysis
revealed that water temperature was the most important driving factor for seasonal
succession of phytoplankton. Significant correlation was found between ρ(Chla) and
surface runoff in flood season. TN∶TP was negatively related to phytoplankton
biomass and phosphorus was the restrictive factor for phytoplankton. Cyanophyta were
affected water temperature, TOC, TN, pH, transparency, turbidity and
NO<inf>3</inf><sup>-</sup>-N. However silicate, TOC, NO<inf>3</inf><sup>-</sup>-N, and
COD were the main environmental factor of bacillariophyta while TOC, COD, pH,
transparency and NO<inf>3</inf><sup>-</sup>-N were the main factor of chlorophyta.<br/>
© 2017, Science Press. All right reserved.
Number of references:29
Main heading:Reservoirs (water)
Controlled terms:Analysis of variance (ANOVA) - Chlorophyll - Factor analysis - Floods -
Phytoplankton - Runoff - Silicates - Temperature - Transparency
Uncontrolled terms:Canonical Correspondence Analysis - Chlorophyll a - Chlorophyll-a
concentration - Environmental factors - Phytoplankton biomass - Spatial heterogeneity -
Spatial-temporal characteristics - Spatio-temporal variation
Classification code:441.2 Reservoirs - 442.1 Flood Control - 471 Marine Science and
Oceanography - 641.1 Thermodynamics - 741.1 Light/Optics - 804.1 Organic Compounds -
922 Statistical Methods - 922.2 Mathematical Statistics
Numerical data indexing:Mass_Density 1.50e-05kg/m3, Mass_Density 2.84e-05kg/m3,
Mass_Density 3.16e-06kg/m3 to 4.61e-05kg/m3, Mass_Density 4.54e-06kg/m3 to 7.63e-05kg/m3,
Mass_Density 5.20e-05kg/m3, Mass_Density 7.70e-07kg/m3 to 2.62e-05kg/m3, Mass_Density
8.62e-06kg/m3, Mass_Density 9.59e-06kg/m3 to 1.23e-04kg/m3
DOI:10.13227/j.hjkx.201701046
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 18>
Accession number:20174804454707
Title:Investigation of Initiation and Shock Process of ANAMMOX Based on Color Space
Authors:Wang, Li-Jun (1); Li, Zhi-Hua (1); Han, Dong (1); Zhang, Tian-Yu (2); Yang,
Cheng-Jian (1)
Author affiliation:(1) Environment and Ecology, School of Environmental and Municinal
Engineering, Xi'an University of Architecture and Technology, Xi'an; 710055, China; (2)
Department of Mathematical Sciences, Montana State University, Bozeman; MT; 59717, United
States
Corresponding author:Li, Zhi-Hua(lizhihua@xauat.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3393-3398
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Anaerobic ammonia oxidation (ANAMMOX) is an efficient and energy-saving
denitrification technology, but it still lacks a simple and easy method to characterize
its start-up process and stable state. Based on the analysis of water quality, color
space was used to monitor the color change of sludge during the start-up of ANAMMOX, and
the species and quantity of microbial flora were analyzed by high-throughput sequencing
technology. The results were as follows. ① According to water quality
characteristics, the whole start-up process can be divided into activity lag phase,
activity enhancement period, load increase period, and stable operation period. At the
same time, HSV and CIELAB color space indicators decreased first, then increased, and
finally remained stable. The change of sludge color was consistent with the change of
water quality and the change of dominant bacteria based on the molecular biology testing,
which implies correlations among these three. Therefore, color space can be used to
characterize the start-up process of ANAMMOX. ② When subjected to shocks caused by
high load, H, S, a<sup>*</sup>, b<sup>*</sup>, C<inf>ab</inf><sup>*</sup>, and TIN volume
removal rate all decreased, while H<inf>ab</inf>suddenly increased. The impact
characteristic of the system was accurately expressed by all of the color indicators.
This paper proposes a color space-based method for characterizing all phases of the
start-up of ANAMMOX and a shock process index system that provides a theoretical basis
for applying color space in ANAMMOX systems.<br/> © 2017, Science Press. All right
reserved.
Number of references:24
Main heading:Color
Controlled terms:Energy conservation - Image analysis - Molecular biology - Nitrogen
removal - Quality control - Throughput - Wastewater treatment - Water quality
Uncontrolled terms:Activity enhancement - Ammonia oxidation - ANAMMOX - Color space -
High-throughput sequencing - Impact characteristics - Volume removal rates - Water
quality characteristics
Classification code:445.2 Water Analysis - 452.4 Industrial Wastes Treatment and
Disposal - 461.9 Biology - 525.2 Energy Conservation - 741.1 Light/Optics - 913.3
Quality Assurance and Control
DOI:10.13227/j.hjkx.201701134
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 19>
Accession number:20174804454710
Title:Effect of Different TOC to NH<inf>4</inf><sup>+</sup>-N Ratios on Nitrogen Removal
Efficiency in the ANAMMOX Process
Authors:Wang, Fan (1, 2); Liu, Kai (1, 2); Lin, Xing (1, 2); Zhou, Zheng (1, 2); Li,
Xiang (1, 2); Huang, Yong (1, 2)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Institute of Environmental
Biotechnology, Suzhou University of Science and Technology, Suzhou; 215009, China
Corresponding author:Li, Xiang(lixiang68411364@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3415-3421
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The effect of the TOC to NH<inf>4</inf><sup>+</sup>-N ratio on nitrogen removal
rate in an ANAMMOX sequencing batch reactor was studied for the short term and long term.
Short-term results showed the maximum TOC/NH<inf>4</inf><sup>+</sup>-N that ANAMMOX could
afford was 1.4. At the same time, the rate of nitrogen removal was 0.26 kg·
(m<sup>3</sup>·d)<sup>-1</sup>. The maximum nitrogen removal rate of 0.34
kg·(m<sup>3</sup>·d)<sup>-1</sup>was obtained when TOC/NH<inf>4</inf><sup>
+</sup>-N was less than 0.4 in the long-term experiment. Whereas the nitrogen removal
rate of the reactor decreased continuously when TOC/NH<inf>4</inf><sup>+</sup>-N exceeded
0.4, and it was difficult to recover the activity of the ANAMMOX bacteria in the short
term. qPCR results showed that the amount of ANAMMOX bacteria dropped from
2.9×10<sup>11</sup>copies·mL<sup>-1</sup>to
3.15×10<sup>10</sup>copies·mL<sup>-1</sup>with the increase of organics.
When TOC/NH<inf>4</inf><sup>+</sup>-N exceeded 1.6, NH<inf>4</inf><sup>+</sup>-N could
hardly be removed by the ANAMMOX bacteria, which were severely inhibited. The number of
denitrifying bacteria was 3.0×10<sup>9</sup>copies·mL<sup>-1</sup>;
meanwhile, most of the NO<inf>2</inf><sup>-</sup>-N in the reactor was removed via
denitrification.<br/> © 2017, Science Press. All right reserved.
Number of references:24
Main heading:Nitrogen removal
Controlled terms:Bacteria - Batch reactors - Biological materials - Denitrification -
Nitrogen - Polymerase chain reaction - Wastewater treatment
Uncontrolled terms:ANAMMOX - Anammox bacteria - Denitrifying bacteria - Long-term
experiments - Nitrogen removal efficiency - Nitrogen removal rates - Quantitative PCR -
Sequencing batch reactors
Classification code:452.4 Industrial Wastes Treatment and Disposal - 461.2 Biological
Materials and Tissue Engineering - 801.2 Biochemistry - 802.1 Chemical Plants and
Equipment - 802.2 Chemical Reactions - 804 Chemical Products Generally
DOI:10.13227/j.hjkx.201701185
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 20>
Accession number:20174804454717
Title:Nitrification Activity and Autotrophic Nitrifiers in Long-term Fertilized Acidic
Upland Soils
Authors:Xu, Bai-Lu (1, 2); Zhong, Wen-Hui (1); Huang, Qian-Ru (3); Qin, Hong-Yi (1);
Deng, Huan (1, 2); Han, Cheng (1)
Author affiliation:(1) Jiangsu Provincial Key Laboratory of Materials Cycling and
Pollution Control, School of Geography Sciences, Nanjing Normal University, Nanjing;
210023, China; (2) School of Environmental Sciences, Nanjing Normal University, Nanjing;
210023, China; (3) Jiangxi Institute of Red Soil, Nanchang; 331717, China
Corresponding author:Han, Cheng(chenghan@njnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3473-3482
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Soil microcosm incubation, molecular ecology techniques including denaturing
gradient gel electrophoresis and Illumina MiSeq high-throughput sequencing, and
bioinformatics analysis were carried out to investigate the effect of long-term
fertilization with chemical fertilizers (NPK) and organic manure (OM) on soil
nitrification activity and the autotrophic nitrifying communities in acidic upland soils.
No fertilization soil (CK) was the control. Relationships between soil nitrification
activities, autotrophic nitrifying communities, and soil characteristics were further
evaluated. Long-term fertilization significantly increased the soil organic carbon and
inorganic nitrogen contents. Fertilization with organic manure significantly increased
soil pH and total nitrogen contents, but decreased soil C/N. Autotrophic nitrification
dominated soil nitrification, and accounted for 73.60%-85.32% of total nitrification.
Fertilization significantly increased soil autotrophic nitrification activity and the
highest value was observed in the OM soil. During the microcosm incubation, the absolute
abundances of amoA genes and the relative abundances of 16S rRNA genes of ammonia-
oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) in the OM soil significantly
increased. The relative abundances of 16S rRNA genes of the AOA greatly increased in both
CK and NPK soils. These results suggested the remarkable activity of AOA in the three
soils (the predominant population was Nitrososphaera, >99.30%) and implied that AOB
was active in the OM soil (the predominant population was Nitrosospira, >99.99%). We
also found the activity of nitrite-oxidizing bacteria (NOB) in the OM soil, and the
predominant population was Nitrospira (>96.69%). Stepwise regression analysis
demonstrated that soil autotrophic nitrification activity was significantly affected by
soil total nitrogen content, whereas the abundances of archaeal and bacterial amoA genes
were significantly affected by soil organic carbon content and soil pH, respectively. We
also found significant positive correlation between the relative abundance of
Nitrososphaera and soil nitrate content and a negative correlation between the relative
abundance of Nitrosospira and Nitrospira with soil C/N. Overall, our results showed that
long-term fertilization greatly increased soil nitrification activity and altered the
autotrophic nitrifying communities in acidic upland soils. Soil autotrophic nitrification
activity was significantly stimulated by soil total nitrogen content. The Nitrososphaera
group played a critical role in nitrification of acidic upland soils. The increased soil
pH and decreased soil C/N stimulated the growth of Nitrosospira.<br/> © 2017,
Science Press. All right reserved.
Number of references:41
Main heading:Soils
Controlled terms:Ammonia - Bacteria - Bioinformatics - Chemical analysis - Ecology -
Electrophoresis - Fertilizers - Genes - Landforms - Manures - Molecular biology -
Nitrification - Nitrogen - Organic carbon - Regression analysis - RNA
Uncontrolled terms:Ammonia oxidizers - Bioinformatics analysis - Fertilization - Illumina
- Upland soil
Classification code:454.3 Ecology and Ecosystems - 461 Bioengineering and Biology -
481.1 Geology - 483.1 Soils and Soil Mechanics - 701.1 Electricity: Basic Concepts and
Phenomena - 802.2 Chemical Reactions - 804 Chemical Products Generally - 821.5
Agricultural Wastes - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 7.36e+01% to 8.53e+01%
DOI:10.13227/j.hjkx.201701064
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 21>
Accession number:20174804454705
Title:Removal of Nitrogen from Alcohol Wastewater by PN-ANAMMOX
Authors:Zhou, Zheng (1, 2); Lin, Xing (1, 2); Wang, Fan (1, 2); Gu, Cheng-Wei (1, 2);
Shen, Jing (3); Yuan, Yan (1, 2); Jin, Run (1, 2)
Author affiliation:(1) School of Environment Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Institute of Environmental
Biotechnology, Suzhou University of Science and Technology, Suzhou; 215009, China; (3)
Center for Environmental Emergency and Accident Investigation Center, Wujiang District of
Suzhou, Suzhou; 215200, China
Corresponding author:Yuan, Yan(crystal_331@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3377-3384
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:An integrated partial nitrification anaerobic ammonia oxidation reactor was used
to explore the feasibility of nitrogen removal from recycled ethanol wastewater. The
results show that the integrated partial nitrification-anaerobic ammonia oxidation (PN-
ANAMMOX) reactor was started successfully after 40 d under the conditions of pH
7.8±0.5, temperature 30-35℃, and aerobic ORP value 120-150 mV. The total
nitrogen removal rate of 0.125 kg·(m<sup>3</sup>·d)<sup>-1</sup>increased
to 0.75 kg·(m<sup>3</sup>·d)<sup>-1</sup>, Inoculation of mature nitrosated
biofilms and anaerobic ammonium oxide granules can accelerate the start of the reactor.
The effects of alcohol wastewater on the PN-ANAMMOX reactor were mainly caused by
biodegradable TOC, The biodegradable TOC concentration of 100mg·L<sup>-1</sup>in
alcohol wastewater can reduce the removal rate of total nitrogen from 0.75 kg·
(m<sup>3</sup>·d)<sup>-1</sup>to 0.25 kg·(m<sup>3</sup>·d)<sup>-
1</sup>, this inhibition can be restored. Different concentrations of alcohol wastewater
were dosed into the PN-ANAMMOX reactor to acclimate the bacteria. The total nitrogen
removal rate first decreased and then increased, as the influent concentration gradient
increased, which was beneficial for improving the efficiency of nitrogen removal by
extending the HRT and increasing the dissolved oxygen in the PN stage. Finally, the
nitrogen removal rate stabilized at 0.65 kg·(m<sup>3</sup>·d)<sup>-1</sup>.
These results show that PN-ANAMMOX can be used for the treatment of alcohol
wastewater.<br/> © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Nitrogen removal
Controlled terms:Ammonia - Dissolved oxygen - Nitrification - Nitrogen - Wastewater
treatment
Uncontrolled terms:Alcohol wastewater - ANAMMOX - Biodegradable TOC - Biological nitrogen
removal - Partial nitrification
Classification code:452.4 Industrial Wastes Treatment and Disposal - 802.2 Chemical
Reactions - 804 Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 1.00e-01kg/m3, Voltage 1.20e-01V to 1.50e-01V
DOI:10.13227/j.hjkx.201702124
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 22>
Accession number:20174804454706
Title:Biorecovery of Palladium from Simulated Wastewaters and Its Catalytic Property for
Methylene Blue
Authors:Kang, Nai-Xin (1); Zhu, Neng-Wu (1, 2, 3, 4); Guo, Wen-Ying (1); Ha, Chitam (1)
Author affiliation:(1) School of Environment and Energy, South China University of
Technology, Guangzhou; 510006, China; (2) Key Laboratory of Pollution Control and
Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou; 510006,
China; (3) Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and
Recycling, Guangzhou; 510006, China; (4) Guangdong Engineering and Technology Research
Center for Environmental Nanomaterials, Guangzhou; 510006, China
Corresponding author:Zhu, Neng-Wu(nwzhu@scut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3385-3392
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:By using Enterococcus faecalis Z5 strain (CCTCC M2012445) as a microbial
resource, this study explored the possibility of recovering palladium (Pd) in the form of
nanoparticles by adding an electron donor; investigated the Pd biorecovery efficiency of
three kinds of simulated wastewaters including industrial waste processing leachates
(IW), printed circuit board scrap (PCBS), and spent automotive catalyst (SAC); and
analyzed the effect of other metal ions contained in simulated wastewater on Pd
biorecovery efficiency. The results showed that the E. faecalis Z5 could recover Pd(II)
as palladium nanoparticles from the three simulated wastewaters. X-ray diffraction and
transmission electron microscopy analysis indicated that the recovered product was Pd
nanoparticles that were about 10 nm in size and mainly distributed in the periplasm of
the cells. The order of Pd(II) biorecovery efficiency from the three kinds of wastewaters
was IW>SAC>PCBS. The biosorption efficiencies for IW, SAC, and PCBS were 99.8% (6
h), 99.7% (8 h), and 90.3% (12 h), respectively, and the bioreduction efficiencies were
99.9% (4 h), 99.9% (6 h), and 80.4% (36 h). Other metal ions contained in the simulated
wastewaters such as Pt(IV;), Au(III), Ag(I), Cu(II), and Fe(II) affected both the
biosorption and bioreduction processes. The degree of matrix effects on the Pd(II)
bioreduction efficiency were in the order Au(III) >Pt(IV;) >Cu(II) >Ag(I)
>Fe(II). Further doping the recovered Pd nanoparticles with ferriferous oxide enabled
the products to catalyze the degradation of methylene blue in heterogeneous Fenton
reactions, which showed 96.7% degradation rate of methyl blue within 80 min.<br/> ©
2017, Science Press. All right reserved.
Number of references:33
Main heading:Palladium
Controlled terms:Aromatic compounds - Bacilli - Bacteria - Biosorption - Copper compounds
- Degradation - Efficiency - Gold compounds - High resolution transmission electron
microscopy - Iron compounds - Metal ions - Metal nanoparticles - Metals - Nanoparticles
- Oxidation - Palladium compounds - Platinum - Platinum compounds - Printed circuit
boards - Recovery - Scrap metal - Secondary recovery - Transmission electron microscopy
- X ray diffraction
Uncontrolled terms:Catalytic properties - Enterococcus faecalis - Heterogeneous fenton -
Palladium nanoparticles - Printed circuit board scrap - Simulated wastewater - Spent
automotive catalyst - Transmission electron
Classification code:461.9 Biology - 511.1 Oil Field Production Operations - 531
Metallurgy and Metallography - 531.1 Metallurgy - 547.1 Precious Metals - 741.3
Optical Devices and Systems - 761 Nanotechnology - 802.2 Chemical Reactions - 804.1
Organic Compounds - 913.1 Production Engineering
Numerical data indexing:Percentage 9.67e+01%, Size 1.00e-08m, Time 1.30e+05s, Time 1.44e
+04s, Time 2.16e+04s, Time 2.88e+04s, Time 4.32e+04s, Time 4.80e+03s
DOI:10.13227/j.hjkx.201702129
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 23>
Accession number:20174804454683
Title:Perfluorinated Compounds in Snow from Downtown Hangzhou, China
Authors:Zhang, Ming (1); Tang, Fang-Liang (1); Yu, Ya-Yun (1); Xu, Jian-Fen (1); Chen,
Jin-Han (2); Yu, Bo (1); Zhou, Shan (1); Zhang, Wei (1)
Author affiliation:(1) Hangzhou Environmental Monitoring Central Station, Hangzhou;
310007, China; (2) Xiaoshan Environmental Monitoring Station, Hangzhou; 311201, China
Corresponding author:Tang, Fang-Liang(TangFL001@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3185-3191
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Snow samples were collected from the snow event on January 20-22, 2016 from 11
sites in downtown Hangzhou to explore the occurrence of sixteen perfluorinated compounds
(PFCs) in the atmosphere. All samples were prepared by solid-phase extraction with Oasis
WAX cartridges and analyzed using ultra performance liquid chromatography interfaced with
tandem mass spectrometry (UPLC-MS/MS). The results showed that seven medium-and short-
chain PFCs including C<inf>4</inf>and C<inf>8</inf>perfluorinated sulfonates (PFSAs) and
C<inf>4</inf>-C<inf>6</inf>, C<inf>8</inf>, and C<inf>9</inf>perfluorinated carboxylic
acids (PFCAs) were detected in the snow samples. Total PFC concentrations ranged from
2.85 to 35.1 ng·L<sup>-1</sup>, whereas perfluorooctanoic acid (PFOA) dominated,
with ranges of 2.15-23.0 ng·L<sup>-1</sup>, and perfluorooctane sulfonate (PFOS)
was detected at lower levels, ranging from 0 to 0.46 ng·L<sup>-1</sup>. As
compared to the results from other studies, the PFOA concentrations of the study region
were at mid-level and the PFOS concentrations were relatively low. The spatial
distribution of PFCs varied, and the pollutant concentrations of the snow samples from
the sampling sites located in the urban areas were higher than those in the rural areas.
The greatest total PFC concentrations were detected in Fuyang, whereas the lowest
concentrations were detected in Jiande and Chun'an. In this study, the high
concentrations of PFCs dominated by PFOA that were measured in the Hangzhou snow samples
emphasize the importance of atmospheric wet deposition as one of the sources of PFC
contamination in this ecological system and should be addressed. The occurrence of PFCs
in the air, indicated by their presence in the snow, suggests that the atmospheric
environment may be an important contributor in human and ecological exposure to PFCs by
local residents.<br/> © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Snow
Controlled terms:Ecology - Liquid chromatography - Mass spectrometry - Phase separation -
Pollution - Urban growth
Uncontrolled terms:Atmospheric wet deposition - Hangzhou - Perfluorinated carboxylic
acids - Perfluorinated compound (PFCs) - Perfluorooctane sulfonates - Tandem mass
spectrometry - Ultra performance liquid chromatography - UPLC-MS/MS
Classification code:403.1 Urban Planning and Development - 443.3 Precipitation - 454.3
Ecology and Ecosystems - 641.1 Thermodynamics - 801 Chemistry
Numerical data indexing:Mass_Density 0.00e+00kg/m3 to 4.60e-10kg/m3, Mass_Density 2.15e-
09kg/m3 to 2.30e-08kg/m3, Mass_Density 2.85e-09kg/m3 to 3.51e-08kg/m3
DOI:10.13227/j.hjkx.201701040
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 24>
Accession number:20174804454674
Title:Pollution Characteristics and Source Identification of PAHs in Atmospheric
PM<inf>2.5</inf>in Changzhou City
Authors:Gu, Ai-Jun (1); Liu, Jia-Shu (1); Luo, Shi-Peng (1); Bi, Cheng-Lu (1); Su, Ya-Lan
(1); Ye, Zhao-Lian (1, 2); Gai, Xin-Lei (2)
Author affiliation:(1) School of Chemical and Environmental Engineering, Jiangsu
University of Technology, Changzhou; 213001, China; (2) Jiangsu Key Laboratory of
Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science
and Engineering, Nanjing University of Information Science & Technology, Nanjing;
210044, China
Corresponding author:Gai, Xin-Lei(caxinra@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3110-3119
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A total of 55 ambient fine particle (PM<inf>2.5</inf>) samples were collected in
Changzhou City from January to August 2016. The concentrations of 17 PM<inf>2.5</inf>-
bound PAHs in the samples were analyzed by GC-MS. Results showed that seasonal average
mass concentrations of PAHs in winter, spring, and summer were 140.24, 41.42, and 2.96
ng·m<sup>-3</sup>, respectively, which indicating that the pollution of PAHs in
winter appeared more serious than in the other two seasons, and 4-6-ring high molecular
weight PAHs were predominant in all three seasons. The average daily level of BaP was
3.64 ng·m<sup>-3</sup>and the days it exceeded the permitted standard accounted
for 41% of total days. PAH concentration had significant negative correlations with
temperature (correlation coefficient: -0.643) and visibility (correlation coefficient: -
0.466), whereas it had good positive correlations with atmospheric pressure (correlation
coefficient: 0.544) and poor correlations with wind speed and relative humidity. PAH
concentrations were higher at nighttime than at daytime, because of the influences of
temperature difference, atmospheric stratification, as well as pollution sources. The
results from the air backward trajectory model indicated that PM<inf>2.5</inf>-bound PAHs
in Changzhou were mainly affected by local emission sources and short-distance
transportation, whereas the contribution of long-distance transmission was small (only
11%). Based on analysis of characteristic ratios, PAHs were mainly sourced from coal
burning, vehicle emissions, and biomass burning. An incremental lifetime cancer risk
(ILCR) model was used to evaluate the health impact of PAHs via breathing exposure
pathways. Results revealed that the ILCR of adults was higher than that of children. The
ILCRs of the group for winter and spring were slightly higher than the risk threshold,
but a difference was not obvious for summer.<br/> © 2017, Science Press. All right
reserved.
Number of references:37
Main heading:Polycyclic aromatic hydrocarbons
Controlled terms:Atmospheric humidity - Atmospheric pressure - Barium compounds -
Diseases - Health risks - Pollution - Wind
Uncontrolled terms:Atmospheric stratification - Cancer risk - Changzhou - Correlation
coefficient - Long distance transmission - PM2.5 - Source apportionment - Temperature
differences
Classification code:443.1 Atmospheric Properties - 461.7 Health Care - 804.1 Organic
Compounds
Numerical data indexing:Percentage 1.10e+01%, Percentage 4.10e+01%
DOI:10.13227/j.hjkx.201701065
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 25>
Accession number:20174804454694
Title:Effects of Algal Morphology and Al Species Distribution on the Coagulation-
Ultrafiltration Process
Authors:Zhang, Da-Wei (1, 2); Xu, Hui (2); Wang, Xi (2); Men, Bin (2); Wang, Dong-Sheng
(2); Duan, Jin-Ming (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China; (2) State Key Laboratory
of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences,
Chinese Academy of Sciences, Beijing; 100085, China
Corresponding author:Xu, Hui(huixu@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3281-3289
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to ensure drinking water quality, three different Al-based coagulants
[Al<inf>2</inf>(SO<inf>4</inf>)<inf>3</inf>(AS), Al<inf>13</inf>, Al<inf>30</inf>] were
used to treat water laden with different algae [Microcystis aeruginosa(cyanobacteria),
Chlorella(green algae), Cyclotella (diatoms)]. Floc size, strength factor, and recovery
factor under different conditions were measured to investigate the mechanisms in the
coagulation-ultrafiltration process. The results indicated that the main mechanism in the
coagulation process using Al<inf>13</inf>or Al<inf>30</inf>as coagulants was
electrostatic patching and the main mechanism using AS was charge neutralization. In the
Microcystis aeruginosa and Chlorella systems, when Al<inf>13</inf>and Al<inf>30</inf>were
used as coagulants at low dosage, the coagulants that were adsorbed on the side (which
existed on the surfaces of Microcystis aeruginosa and Chlorella cells) would lose their
ability to aggregate the algal cells. When AS was used as coagulant, the electric double
layer was effectively compressed. The repulsive force between algal particles decreased,
and the flocs formed easily. In the Cyclotella system, Al<inf>13</inf>and
Al<inf>30</inf>coagulants effectively formed the flocs through electrostatic patch
effects. There was a significant correlation between membrane flux and floc size, and the
larger flocs formed a looser cake layer on the membrane surface.<br/> © 2017,
Science Press. All right reserved.
Number of references:25
Main heading:Coagulation
Controlled terms:Algae - Aluminum - Bacteria - Electrostatics - Membrane fouling -
Population distribution - Potable water - Ultrafiltration - Water quality - Water
treatment
Uncontrolled terms:Charge neutralization - Coagulation process - Electric double layer -
Membrane surface - Microcystis aeruginosa - Repulsive forces - Species distributions -
Ultrafiltration process
Classification code:405.3 Surveying - 444 Water Resources - 445.1 Water Treatment
Techniques - 445.2 Water Analysis - 541.1 Aluminum - 701.1 Electricity: Basic Concepts
and Phenomena - 802.3 Chemical Operations - 951 Materials Science
DOI:10.13227/j.hjkx.201701130
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 26>
Accession number:20174804454408
Title:Effects of Exogenous Microorganism Inoculation on Efficiency and Bacterial
Community Structure of Sludge Composting
Authors:Yang, Ping-Ping (1); Yin, Hua (1); Peng, Hui (2); Tang, Shao-Yu (1); Lu, Miao
(1); Liu, Hao (1)
Author affiliation:(1) Guangdong Provincial Engineering and Technology Research Center
for Environmental Risk Prevention and Emergency Disposal, School of Environment and
Energy, South China University of Technology, Guangzhou; 510006, China; (2) Department of
Chemistry, Jinan University, Guangzhou; 510632, China
Corresponding author:Yin, Hua(huayin@scut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3536-3543
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this study, municipal sludge, sawdust, and mushroom residues were used as raw
materials for composting, and thermophiles and white-rot fungi were added into the
compost in stages. By measuring physicochemical factors, including temperature, pH value,
organic matter, water-soluble organic carbon, moisture content, total nitrogen,
NH<inf>4</inf><sup>+</sup>-N, NO<inf>3</inf><sup>-</sup>-N, and germination index during
the composting process, the effect of exogenous bacteria inoculation on the efficiency of
compost was determined. By means of high-throughput sequencing technology, the variation
of bacterial community structure and the impact of exogenous bacteria inoculation on
bacterial community structure during sludge composting were also investigated. The
results showed that the inoculation extended the high temperature duration, decreased the
nitrogen loss, and accelerated the decomposition and detoxification of the compost.
During the entire period of composting, the structure of bacterial community changed
significantly. There was low similarity of bacterial community structure among different
stages of the same composting, but high similarity was observed in different composting
of the same period. The inoculation of thermophilic bacteria improved the abundance of
bacterial community and increased the proportions of dominant genera in thermophilic
phase, but changed no species of dominant genera. Canonical correspondence analysis
showed that pH had the highest influence on the structure of bacterial community and that
temperature possessed positive correlation with nine genera.<br/> © 2017, Science
Press. All right reserved.
Number of references:27
Main heading:Bacteria
Controlled terms:Carbon - Composting - Detoxification - Efficiency - Nitrogen - Organic
carbon - Social sciences - Throughput
Uncontrolled terms:Bacterial community - Bacterial community structure - Canonical
Correspondence Analysis - High-throughput sequencing - Physico-chemical factors - Sludge
composting - Thermophilic bacteria - Water-soluble organic carbon
Classification code:804 Chemical Products Generally - 804.1 Organic Compounds - 913.1
Production Engineering - 971 Social Sciences
DOI:10.13227/j.hjkx.201702176
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 27>
Accession number:20174804454712
Title:Start-up of Granule CANON Process and the Strategy for Enhancing Total Nitrogen
Removal Rate
Authors:Sun, Yan-Fang (1); Han, Xiao-Yu (2, 3, 4); Zhang, Shun-Jun (3, 4); Li, Xing (1);
Cao, Xiang-Sheng (1)
Author affiliation:(1) Key Laboratory of Beijing for Water Quality Science and Water
Environmental Recovery Engineering, College of Architecture and Civil Engineering,
Beijing University of Technology, Beijing; 100124, China; (2) College of Resources and
Environmental Engineering, Harbin Institute of Technology, Harbin; 150090, China; (3)
Research and Development Center of Beijing Drainage Group Technology, Beijing; 100022,
China; (4) Beijing Engineering Research Center for Wastewater Reuse, Beijing; 100124,
China
Corresponding author:Li, Xing(lixing@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3429-3434
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To shorten the start-up time of the CANON granular sludge process and improve
the total nitrogen removal rate in the engineering, the start-up method of CANON granular
sludge process and the strategy for enhancing the total nitrogen removal rate were
studied in an SBR reactor. During the experiment, the temperature was controlled at
30℃±1℃ and the pH was 7-8, the aeration rate and settling time were
operated according to the sludge properties and effect of nitrogen removal. The results
showed that the transition of the sludge properties from combined floc-granule to granule
was realized after 55 d. The total nitrogen removal rate reached 0.32 kg·
(m<sup>3</sup>·d)<sup>-1</sup>and remained stable after 117 d, thus the reactor
was started up successfully. With constant improvement of the aeration rate, the average
NRR was maintained at 1.35 kg·(m<sup>3</sup>·d)<sup>-1</sup>after 77 d and
improvement of the process load was achieved. The results showed that there was good
correlation between the NRR and DO, therefore, the NRR can be determined by observing the
DO and the process can be maintained stably.<br/> © 2017, Science Press. All right
reserved.
Number of references:26
Main heading:Nitrogen removal
Controlled terms:Granular materials - Granulation - Nitrogen - Reactor startup -
Wastewater treatment
Uncontrolled terms:Aeration rate - ANAMMOX - Autotrophic nitrogen removal - Constant
improvement - Good correlations - Granular sludge - Sludge properties - Total nitrogen
removal
Classification code:452.4 Industrial Wastes Treatment and Disposal - 621 Nuclear
Reactors - 802.3 Chemical Operations - 804 Chemical Products Generally - 951 Materials
Science
DOI:10.13227/j.hjkx.201702043
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 28>
Accession number:20174804454702
Title:Purification Effect of Piggery Wastewater with Chlorella pyrenoidosa by Immobilized
Biofilm-Attached Culture
Authors:Wang, Yuan-Zhu (1); Cheng, Peng-Fei (2, 4); Liu, De-Fu (1, 2, 3); Liu, Tian-Zhong
(5)
Author affiliation:(1) College of Hydraulic and Environmental Engineering, Engineering
Research Center of Eco-environment in Three Gorges Reservior Region, China Three Gorges
University, Yichang; 443002, China; (2) School of Water Resources and Hydropower
Engineering, Wuhan University, Wuhan; 430072, China; (3) Key Laboratory of Ecological
Restoration of River-lakes and Algal Utilization, College of Resources and Environment
Sciences, Hubei University of Technology, Wuhan; 430068, China; (4) Poyang Lake Eco-
economy Research Center of Jiujiang University, Jiujiang; 332005, China; (5) Qingdao
Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao;
266101, China
Corresponding author:Liu, De-Fu(dfliu@189.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3354-3361
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Piggery wastewater treatment with microalgae is a biological recycling
technology. To evaluate the purification effect, this study investigated the treatment of
piggery wastewater at different dilution ratios with Chlorella pyrenoidosa by attached
cultivation and lipid production of algae cells and explored the tolerance of Chlorella
pyrenoidosa to the piggery wastewater, which has high ammonia nitrogen. The piggery
wastewater was diluted with purified water 1-, 2-, 5-, and 10-fold in culture media. The
removal efficiencies of COD, ammonia nitrogen, total nitrogen, and total phosphorus and
the enrichment effect of the heavy metals copper, zinc, and iron were measured.
Meanwhile, we investigated the lipid production of Chlorella pyrenoidosa in variously
diluted wastewater (1-, 2-, 5-, and 10-fold). It turned out that the purification effects
of COD, ammonia nitrogen, total nitrogen, and total phosphorus were best when the piggery
wastewater was diluted 5-fold, and the removal efficiencies were 86.8%, 94.1%, 85.2%, and
84.3%, respectively. Correspondingly, the lipid content was as high as 32.7%, and the
removal efficiencies of the heavy metals copper, zinc, and iron were 72.9%, 70.0%, and
73.0%, respectively. The biomass productivity was 4.21 g·(m<sup>2</sup>·d)
<sup>-1</sup>at the end of the experiment. This research makes an effective connection
between microalgae and piggery wastewater, which is difficult to purify deeply, and
provides a theoretical basis for achieving algal biofuel production and decreasing the
cost of wastewater treatment.<br/> © 2017, Science Press. All right reserved.
Number of references:31
Main heading:Wastewater treatment
Controlled terms:Algae - Ammonia - Biological water treatment - Copper - Efficiency -
Heavy metals - Lipids - Microorganisms - Nitrogen - Nitrogen removal - Phosphorus -
Purification - Removal - Wastewater reclamation - Zinc
Uncontrolled terms:Biological recycling - Biomass productivity - Chlorella pyrenoidosa -
Enrichment effects - Piggery wastewater - Purification effect - Removal efficiencies -
Serial dilutions
Classification code:445.1 Water Treatment Techniques - 452.4 Industrial Wastes
Treatment and Disposal - 461.9 Biology - 531 Metallurgy and Metallography - 544.1
Copper - 546.3 Zinc and Alloys - 804 Chemical Products Generally - 913.1 Production
Engineering
Numerical data indexing:Percentage 3.27e+01%, Percentage 7.00e+01%, Percentage 7.29e+01%,
Percentage 7.30e+01%, Percentage 8.43e+01%, Percentage 8.52e+01%, Percentage 8.68e+01%,
Percentage 9.41e+01%
DOI:10.13227/j.hjkx.201701113
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 29>
Accession number:20174804454714
Title:Characteristics of N<inf>2</inf>O and NO<inf>x</inf>Emissions from Purple Soil
Under Different Fertilization Regimes
Authors:Hu, Lei (1, 2, 3); Liu, Yun (1, 2, 3); Zhu, Bo (1, 3)
Author affiliation:(1) Institute of Mountain Hazards and Environment, Chinese Academy of
Sciences, Chengdu; 610041, China; (2) University of Chinese Academy of Sciences, Beijing;
100049, China; (3) Key Laboratory of Mountain Surface Processes and Ecological
Regulation, Chinese Academy of Sciences, Chengdu; 610041, China
Corresponding author:Zhu, Bo(bzhu@imde.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3442-3450
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:N<inf>2</inf>O and NO<inf>x</inf>emissions from a winter wheat-summer maize
rotation system in purple soil were measured on a long-term fertilization platform of
purple soil for two consecutive cropping years (from November 2014 to September 2016) by
using a closed-chamber and gas chromatography-based system. Chemical fertilizer (NPK),
pig manure (OM), incorporation of crop residues plus synthetic NPK fertilizer (RSDNPK),
pig manure plus synthetic NPK fertilizer (OMNPK), and nitrification inhibitor with NPK
fertilizer (DCDNPK) under the same rate of total nitrogen were involved in monitoring
N<inf>2</inf>O and NO<inf>x</inf>emissions. Short-term fertilizer-free treatment (CK) was
used as a control for emission coefficient calculation. The results showed that
N<inf>2</inf>O emission peaks appeared in the early stage of fertilization and in the
period of heavy rainfall for all fertilization regimes. The NO<inf>x</inf>emission
process was similar to that of N<inf>2</inf>O, in that emission peaks appeared at the
early stage of fertilization, yet no obvious emission peaks were observed during heavy
rainfall. The annual cumulative emissions of N<inf>2</inf>O from NPK, OM, RSDNPK, OMNPK,
and DCDNPK were 1.35, 4.38, 1.43, 2.46, and 0.92 kg·hm<sup>-2</sup>, respectively,
and the emission coefficients were 0.33%, 1.41%, 0.36% 0.73%, and 0.18%. The annual
emissions of NO<inf>x</inf>from NPK, OM, RSDNPK, OMNPK, and DCDNPK were 0.11, 0.38, 0.10,
0.27, and 0.04 kg·hm<sup>-2</sup>, respectively, and the cumulative emission
coefficients were 0.03%, 0.13%, 0.03%, 0.09%, and 0.01%. Amendment of organic material
was the main stimulator for N<inf>2</inf>O and NO<inf>x</inf>emissions, as they
significantly increased 226% and 262% (for OM) and 83% and 157% (for OMNPK), respectively
(P<0.01), compared with conventional synthetic fertilizers. The application of
synthetic fertilizers combined with nitrification inhibitor (DCDNPK) significantly
reduced N<inf>2</inf>O emissions 32% and NO<inf>x</inf>emissions 62% (P<0.01), whereas
straw returning with NPK application increased N<inf>2</inf>O emissions 6% and reduced
NO<inf>x</inf>emissions 5% (P>0.05). Furthermore, statistical analyses showed that
soil inorganic N content was the main regulating factor of N<inf>2</inf>O and
NO<inf>x</inf>emissions together, whereas soil water-filled pore space (WFPS) and
temperature were the respective main regulating factors of N<inf>2</inf>O and
NO<inf>x</inf>emissions individually.<br/> © 2017, Science Press. All right
reserved.
Number of references:34
Main heading:Fertilizers
Controlled terms:Agricultural wastes - Chromatography - Crops - Gas chromatography - Gas
emissions - Manures - Nitrification - Nitrogen fertilizers - Nitrogen oxides - Rain -
Soil moisture - Soils
Uncontrolled terms:Cumulative emissions - Emission coefficient - Fertilization regime -
Optimal fertilization - Regulation conditions
Classification code:443.3 Precipitation - 483.1 Soils and Soil Mechanics - 802.2
Chemical Reactions - 802.3 Chemical Operations - 804 Chemical Products Generally -
804.2 Inorganic Compounds - 821.4 Agricultural Products - 821.5 Agricultural Wastes
Numerical data indexing:Percentage 1.00e-02%, Percentage 1.30e-01%, Percentage 1.41e+00%,
Percentage 1.57e+02%, Percentage 1.80e-01%, Percentage 2.26e+02%, Percentage 2.62e+02%,
Percentage 3.00e-02%, Percentage 3.20e+01%, Percentage 3.30e-01%, Percentage 6.00e+00%,
Percentage 7.30e-01%, Percentage 8.30e+01%, Percentage 9.00e-02%
DOI:10.13227/j.hjkx.201612250
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 30>
Accession number:20174804454690
Title:Sedimentary Phosphorus Speciation in the Coastal Hypoxic Area of Changjiang Estuary
and Its Environmental Significance
Authors:Liu, Jun (1, 2, 3); Zang, Jia-Ye (1); Ran, Xiang-Bin (1, 3); Zhao, Chen-Ying (1);
Liu, Ji-Hua (2, 3); Wang, Xiao-Jing (2)
Author affiliation:(1) Research Center for Marine Ecology, First Institute of
Oceanography, State Oceanic Administration, Qingdao; 266061, China; (2) Key Laboratory of
Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State
Oceanic Administration, Qingdao; 266061, China; (3) Laboratory for Marine Geology,
Qingdao National Laboratory for Marine Science and Technology, Qingdao; 266237, China
Corresponding author:Zang, Jia-Ye(zjy@fio.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3243-3253
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Phosphorus (P) is a potential limiting nutrient in Changjiang Estuary.
Sedimentary P preservation and regeneration play an important role in indicating regional
environmental changes and buffering P limitation in the water column. A series of coring
experiments was implemented in the hypoxic area of Changjiang Estuary to explore
sedimentary P speciation and distribution and their environmental significance. The
results showed that the contents and distributions of P in the cores were largely
influenced by terrestrial loading, and Detr-P was the dominant P form in the sediments,
followed by Org-P, Fe-P, and Auth-P, whereas Exch-P was the minor phase of Tot-P
(<5%). Auth-P was predominantly yielded by Org-P and Fe-P transformations. P
preservation in Changjiang Estuary was significantly related to terrestrial inputs and
environmental changes in the water column. P speciation in cores tracked the regional
environmental changes effectively. Distribution of reactive P in the hypoxic area was
significantly different from that in the oxic area, with fairly high C/P ratios. The
benthic diffusive flux of DRP in the study area ranged from 0.90 to 1.13 μmol·
(cm<sup>2</sup>·a)<sup>-1</sup>. Tot-P burial efficiency (PBE) was higher than 70%
and the PBE for Detr-P was nearly 100%, whereas the PBEs for Fe-P and Org-P were 38% and
26%, respectively. Auth-P was the dominant fraction of reactive P preserved in the
sediments, and about 51% of Auth-P originated from Fe-P and Org-P transformations. The
PBE in the hypoxia area of Changjiang Estuary was fairly lower than that in the
continental shelf of the East China Sea. Hypoxia leads to a decrease in the PBE, which
would have long-term influence on ecological environmental problems, especially
eutrophification. Changes in terrestrial inputs played a key role in P composition in the
sediments; the P loads of Changjiang River coupled with primary production and hypoxia
greatly affected the P cycling in the Estuary.<br/> © 2017, Science Press. All right
reserved.
Number of references:57
Main heading:Estuaries
Controlled terms:Iron compounds - Phosphorus - Sedimentology - Sediments
Uncontrolled terms:Changjiang Estuary - Continental shelves - Environmental change -
Environmental problems - Environmental significance - Eutrophification - Hypoxia -
Phosphorus speciation
Classification code:407.2 Waterways - 481.1 Geology - 483 Soil Mechanics and
Foundations - 804 Chemical Products Generally
Numerical data indexing:Percentage 1.00e+02%, Percentage 2.60e+01%, Percentage 3.80e+01%,
Percentage 5.10e+01%, Percentage 7.00e+01%
DOI:10.13227/j.hjkx.201701140
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 31>
Accession number:20174804454699
Title:Analysis of Microbial Diversity in a Fluidized-Sand Biofilter Based on High-
Throughput Sequencing Technology
Authors:Zhang, Hai-Geng (1); Song, Hong-Qiao (1); Gu, Chuan-Chuan (1); Shan, Jian-Jun
(1); Zhang, Yu-Lei (1); Ni, Qi (1)
Author affiliation:(1) Fishery Machinery and Instrument Research Institute, Chinese
Academy of Fishery Sciences, Shanghai; 200092, China
Corresponding author:Zhang, Yu-Lei(zhangyulei@fmiri.an.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3330-3338
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to understand the microbial community composition and mechanism of
purifying aquaculture water with a biofilter that was been applied to spotted parrotfish
recirculating aquaculture systems with microglass beads as the biofilter filler, the
changes in the nutrients of different biological filter beds and the water treatment
performance of a fluidized-sand biofilter were analyzed. By using high-throughput
sequencing technology, the microbial community structure of the surface area and bottom
area at different times were studied. The results show that the fluidized-sand biofilter
successfully start-up after one month under marine culture. Nitrification of the
biofilter occurred mainly in the lower bed layer; the surface area played a small role in
eliminating the NH<inf>4</inf><sup>+</sup>-N. The average removal rates of
NH<inf>4</inf><sup>+</sup>-N, TN, BOD<inf>5</inf>, and SS were 68.3%±2.24%,
49.54%±3.56%, 60.35%±4.98%, and 45.21%±2.11%, respectively. The
average NH<inf>4</inf><sup>+</sup>-N removal load reached (343.28±75.5) g·
(m<sup>3</sup>·d)<sup>-1</sup>, which showed a better performance of wastewater
treatment. In this experiment, 31 phyla and 490 genera were identified, thus the
biological diversity was significantly higher than that of the other conventional
microbial biofilter. Start-stop cycling of the self-cleaning device in the biofilter had
no effect on the microbial diversity of different regional, but had some effect on the
dominant bacterial community of the microglass beads surface. Under opening self-cleaning
device regularly condition, the microbial species of the surface and bottom areas became
significantly similar. With time, the microbial species of the superficial area and
bottom area had no significant change, and the microbial population structure was
relatively stable. In the biofilm training period, the diversity of microbial communities
was significantly lower than it was after biofilm maturation. At the time of biofilter
stable operation, the dominant bacteria of the superficial zone essentially remained
unchanged and mainly included Anaerolineaceae_uncultured (8.4%-28%),
Flavobacteriaceae_unclassified (1.1%-32%), Rhodobacteraceae_uncultured (2.3%-17%),
Nitrospira(1%-7%), and Caldilineaceae_uncultured (1%-6%). The dominant bacteria of the
bottom zone changed over time and mainly include Nitrospira (12.45%-17.06%),
Candidatus_Microthrix (2.6%-8.8%), Muricauda (4.8%-6.3%), Defluviimonas (6%-7%), and
Rhodobacteraceae_uncultured (2%-6.2%). Among them, the abundance of Nitrospira was
significantly higher than that in the other biofilter.<br/> © 2017, Science Press.
All right reserved.
Number of references:30
Main heading:Biofilters
Controlled terms:Aquaculture - Bacteria - Biofilms - Biological filter beds - Effluents -
Fluidization - Microorganisms - Sand - Throughput - Wastewater treatment - Water
treatment
Uncontrolled terms:High-throughput sequencing - Microbial community composition -
Microbial community structures - Microbial diversity - Microglass beads - Recirculating
aquaculture system - Sand biofilter - Treatment performance
Classification code:445.1 Water Treatment Techniques - 452.3 Industrial Wastes - 452.4
Industrial Wastes Treatment and Disposal - 461.9 Biology - 462.5 Biomaterials
(including synthetics) - 483.1 Soils and Soil Mechanics - 802.3 Chemical Operations -
821.3 Agricultural Methods
Numerical data indexing:Percentage 1.00e+00% to 6.00e+00%, Percentage 1.00e+00% to 7.00e
+00%, Percentage 1.10e+00% to 3.20e+01%, Percentage 1.24e+01% to 1.71e+01%, Percentage
2.00e+00% to 6.20e+00%, Percentage 2.30e+00% to 1.70e+01%, Percentage 2.60e+00% to 8.80e
+00%, Percentage 4.80e+00% to 6.30e+00%, Percentage 6.00e+00% to 7.00e+00%, Percentage
8.40e+00% to 2.80e+01%
DOI:10.13227/j.hjkx.201702089
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 32>
Accession number:20174804454673
Title:Characteristics Research on Carbonaceous Component of Particulate Matter Emitted
from Iron and Steel Industry
Authors:Zhang, Jin-Sheng (1); Wu, Jian-Hui (1); Ma, Xian (1); Feng, Yin-Chang (1)
Author affiliation:(1) State Environmental Protection Key Laboratory of Urban Ambient Air
Particulate Matter Pollution Prevention and Control, College of Environmental Science and
Engineering, Nankai University, Tianjin; 300071, China
Corresponding author:Wu, Jian-Hui(envwujh@nankai.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3102-3109
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to investigate the carbonaceous characteristics of particles emitted
from the iron and steel industry, an electrical low-pressure impactor (ELPI) was used to
collect three sets of samples from the sintering process and one set of samples from the
ironmaking process emissions of particulate matters. Organic carbon (OC) and elemental
carbon (EC), which were divided into seven carbonaceous components based on the
temperature of the particulate matter, were analyzed using a thermal-light reflection
method. Results show that OC in sintering process particles is higher than that in
ironmaking particles and accounts for 5.3%±2.3% and 7.1%±3.0% of
PM<inf>10</inf>and PM<inf>2.5</inf>, respectively, which reveals that OC tended to be
enriched in fine particles. In the ironmaking process particles, OC accounted for 2.5%
and 2.0% of PM<inf>10</inf>and PM<inf>2.5</inf>, respectively. The relative proportions
of the seven carbonaceous components in the four sets of samples were very similar. OC2
and OC3 accounted for the highest proportion; the EC1, EC2, and EC3 contents decreased in
turn; and OC1 may be associated with boiler scale and desulfurization. In addition, the
OC and EC of sintering process particles had higher correlation, and the OC/EC value of
primary emission particles was 4.7±0.7, which is much higher than the value of the
secondary OC estimation index in environment. Analyzing deeply on the carbonaceous
characteristics in particles emitted from the iron and steel industry, which will provide
essential data for source apportionment of carbonaceous aerosols in environment and will
be conducive to the follow supervisory of pollution cleaning in iron and steel
industry.<br/> © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Iron and steel industry
Controlled terms:Iron - Iron metallurgy - Iron research - Light reflection - Organic
carbon - Particles (particulate matter) - Sintering - Steelmaking
Uncontrolled terms:Carbonaceous aerosol - Carbonaceous components - Characteristics
researches - Electrical low-pressure impactor - Iron making process - Particulate Matter
- Sintering process - Source apportionment
Classification code:545 Iron and Steel - 741.1 Light/Optics - 804.1 Organic Compounds
- 951 Materials Science
Numerical data indexing:Percentage 2.00e+00%, Percentage 2.50e+00%
DOI:10.13227/j.hjkx.201701121
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 33>
Accession number:20174804454708
Title:Fast Start-up of Shortcut Nitrification in a CSTR and an MBR
Authors:Zhang, Ting (1); Wu, Peng (1, 2, 3); Shen, Yao-Liang (1, 2, 3); Lü, Gang
(1); Xu, Yue-Zhong (1, 2, 3); Thomas, Samwine (1)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Jiangsu Collaborative Innovation
Center of Technology and Material of Water Treatment, Suzhou; 215009, China; (3) Jiangsu
Key Laboratory of Environmental Science and Engineering, Suzhou; 215009, China
Corresponding author:Xu, Yue-Zhong(kgre505@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3399-3405
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to achieve fast start-up of shortcut nitrification, a continuous
stirred tank reactor (CSTR) and a membrane bioreactor (MBR) were selected for a
comparative study about the start-up characteristic of shortcut nitrification. The
differences in three aspects of the two reactors were investigated, namely start-up time,
nitrogen transformation, and sludge performance. The results showed that the start-up of
shortcut nitrification was successfully achieved in the CSTR and MBR after 44 and 56 days
of operation, respectively, with influent C/N=1, temperature around
30℃±1℃, pH of 7.5-8.0, and dissolved oxygen (DO) of 0.6-1.0
mg·L<sup>-1</sup>, as well as combining anoxic/aerobic ratio 1∶3 (15
min∶45 min) with shortened hydraulic retention time (HRT). The start-up period of
the MBR was shorter. On the 14th, 28th, and 56th day, the average nitrite accumulation
efficiencies in the CSTR were 51%, 66%, and 89%, respectively, and 50%, 71%, and 93% in
the MBR, and nitrate formation rates of the CSTR was successively 7.4, 4.0, and 1.7
mg·(g·h)<sup>-1</sup>(NO<inf>3</inf><sup>-</sup>-N/MLVSS), respectively,
and 7.6, 3.5, and 1.0 mg·(g·h)<sup>-1</sup>(NO<inf>3</inf><sup>-</sup>-
N/MLVSS) for the MBR. A higher nitrite accumulation efficiency and a lower nitrate
formation rate were detected in the MBR on the 28th and 56th day, respectively, which
could be beneficial to the fast start-up of shortcut nitrification. During the operation
period, the shortcut nitrification sludge in the two reactors was yellow, the sludge
volume index (SVI) was between 55 and 110 mL·g<sup>-1</sup>, and the mixed liquor
volatile suspended solids (MLVSS)/mixed liquor suspended solids (MLSS) ratio was around
0.6-0.8. The good sludge performance created favorable conditions for the fast start-up
of shortcut nitrification in both the CSTR and MBR. In conclusion, the MBR exhibited
better performance in the fast start-up of shortcut nitrification.<br/> © 2017,
Science Press. All right reserved.
Number of references:27
Main heading:Nitrification
Controlled terms:Bioreactors - Chemical reactors - Dissolved oxygen - Efficiency -
Nitrates - Nitration - Tanks (containers)
Uncontrolled terms:Continuous stirred tank reactor - Fast start-up - Intermittent
aeration - Membrane bio reactor (MBR) - Shortcut nitrification
Classification code:619.2 Tanks - 802.1 Chemical Plants and Equipment - 802.2 Chemical
Reactions - 804.2 Inorganic Compounds - 913.1 Production Engineering
Numerical data indexing:Age 1.21e-01yr, Age 1.53e-01yr, Mass_Density 6.00e-04kg/m3 to
1.00e-03kg/m3, Percentage 5.00e+01%, Percentage 5.10e+01%, Percentage 6.60e+01%,
Percentage 7.10e+01%, Percentage 8.90e+01%, Percentage 9.30e+01%, Specific_Volume 5.50e-
02m3/kg to 1.10e-01m3/kg
DOI:10.13227/j.hjkx.201701080
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 34>
Accession number:20174804454682
Title:Odor Emission Characteristics and Pollution Evaluation from Typical Household
Rubbish Disposal Facilities
Authors:Lu, Hui-Jie (1)
Author affiliation:(1) Beijing Key Laboratory of Municipal Solid Wastes Testing Analysis
and Evaluation, Beijing Environmental Sanitation Engineering Research Institute, Beijing;
100028, China
Corresponding author:Lu, Hui-Jie(luhuijie.hi@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3178-3184
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to study the characteristics of odors from typical household rubbish
disposal facilities, samples were taken from pretreatment workshops of the landfill
process, incineration process, and composting process in Beijing, and cold enrichment-
GC/MS was used to determine the odor component qualitatively and quantitatively. Results
indicated that six categories were detected in all samples: aromatic hydrocarbons,
sulfides, halides, olefins, alkanes, and oxygen containing organic substances. In the
pretreatment workshop of the landfill process, 50 kinds of chemicals were detected, the
total odor concentration was 100.069 mg·m<sup>-3</sup>, the theoretical odor
concentration was 350.611, and the comprehensive odor index was 25.448. In the
pretreatment workshop of the incineration process, 55 kinds of chemicals were detected,
the total odor concentration was 36.052 mg·m<sup>-3</sup>, the theoretical odor
concentration was 141.434, and the comprehensive odor index was 21.506. In the
pretreatment workshop of the composting process, 34 kinds of chemicals were detected, the
total odor concentration was 25.382 mg·m<sup>-3</sup>, the theoretical odor
concentration was 27.547, and the comprehensive odor index was 14.401. Combined with the
threshold of diluted multiples, the particular pollutants of the pretreatment workshop of
the landfill process were dimethyl disulfide, butyl acetate, p-diethylbenzene, and
ethanol. Similarly, the particular pollutants of the pretreatment workshop of the
incineration process were methanethiol, dimethyl disulfide, ethanol, and limonene. The
particular pollutants of the pretreatment workshop of the composting process were
ethanol, dimethyl disulfide, butyl acetate, and limonene.<br/> © 2017, Science
Press. All right reserved.
Number of references:26
Main heading:Air pollution
Controlled terms:Aromatic hydrocarbons - Chemicals - Ethanol - Incineration - Land fill -
Monoterpenes - Odor control - Odors - Pollution - Sulfur compounds
Uncontrolled terms:Dimethyl disulfides - Disposal facilities - Emission characteristics -
Household rubbish - Incineration process - Odor concentrations - Organic substances -
Pollution evaluation
Classification code:451 Air Pollution - 452 Municipal and Industrial Wastes; Waste
Treatment and Disposal - 803 Chemical Agents and Basic Industrial Chemicals - 804
Chemical Products Generally - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201612230
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 35>
Accession number:20174804454703
Title:Combination of Microbubble Catalytic Ozonation and Biological Process for Advanced
Treatment of Biotreated Coal Chemical Wastewater
Authors:Liu, Chun (1); Zhou, Hong-Zheng (1); Zhang, Jing (1); Chen, Xiao-Xuan (1); Zhang,
Lei (1); Guo, Yan-Kai (1)
Author affiliation:(1) Pollution Prevention Biotechnology Laboratory of Hebei Province,
School of Environmental Science and Engineering, Hebei University of Science and
Technology, Shijiazhuang; 050018, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3362-3368
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A combination of microbubble catalytic ozonation and biological process was used
for advanced treatment of biotreated coal chemical wastewater (BCCW). The performance of
the combination system and the influence of the ratio of ozone dosage to influent COD
were investigated. The results indicated that the refractory nitrogen-containing
aromatics in the BCCW was degraded efficiently by microbubble catalytic ozonation, which
resulted in some COD removal, ammonia nitrogen release, and significant improvement of
biodegradability. The ozone utilization efficiency was close to 100% and the off-gas
ozone did not need to be treated. Sufficient dissolved oxygen (DO) was provided by the
microbubble catalytic ozonation for biological treatment without aeration. COD and
ammonia nitrogen were removed further in the biological treatment efficiently. Better
performance of the combination system was achieved when the system effluent reflux ratio
was 30% and the ratio of ozone dosage to influent COD was 0.44 mg·mg<sup>-1</sup>.
In this case, for microbubble catalytic ozonation, the COD removal efficiency was 42.5%,
the ratio of ozone consumed to COD removed was 1.38 mg·mg<sup>-1</sup>, and the
ozone utilization efficiency was 98.0%. For biological treatment, the COD removal
efficiency was 42.3%. For the combination system, the total COD removal efficiency was
66.7%, the average final effluent COD concentration was 91.5 mg·L<sup>-1</sup>,
and the estimated total ratio of ozone consumed to COD removed was 0.68
mg·mg<sup>-1</sup>, indicating better technical and economic performance.<br/>
© 2017, Science Press. All right reserved.
Number of references:23
Main heading:Biological water treatment
Controlled terms:Ammonia - Biochemical engineering - Biodegradability - Coal - Dissolved
oxygen - Efficiency - Effluents - Nitrogen - Nitrogen removal - Ozone - Ozone water
treatment - Ozonization - Wastewater treatment
Uncontrolled terms:Advanced treatment - Biological treatment - Catalytic ozonation - Coal
chemicals - Micro-bubble
Classification code:445.1 Water Treatment Techniques - 452.3 Industrial Wastes - 452.4
Industrial Wastes Treatment and Disposal - 524 Solid Fuels - 801.2 Biochemistry - 802.2
Chemical Reactions - 804 Chemical Products Generally - 804.2 Inorganic Compounds -
805.1.1 Biochemical Engineering - 913.1 Production Engineering
Numerical data indexing:Mass_Density 9.15e-02kg/m3, Percentage 1.00e+02%, Percentage
3.00e+01%, Percentage 4.23e+01%, Percentage 4.25e+01%, Percentage 6.67e+01%, Percentage
9.80e+01%
DOI:10.13227/j.hjkx.201701151
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 36>
Accession number:20174804454406
Title:Preparation of Magnetic Biomass Carbon by Thermal Decomposition of Siderite Driven
by Wheat Straw and Its Adsorption on Cadmium
Authors:Zhang, Ru-Yu (1); Liu, Hai-Bo (1); Zou, Xue-Hua (1); Qing, Cheng-Song (1); Li,
Meng-Xue (1); Chen, Dong (1); Chen, Tian-Hu (1)
Author affiliation:(1) School of Resource and Environmental Engineering, Hefei University
of Technology, Hefei; 230009, China
Corresponding author:Liu, Hai-Bo(liuhaibosky116@hfut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3519-3528
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:C-Fe<inf>3</inf>O<inf>4</inf>composite material [magnetic biomass char (MBC)]
was prepared by pyrolysis of a mixture of wheat straw and siderite at 500℃. The MBC
was characterized by XRF, FTIR, XRD, SEM, XPS, and a magnetic susceptibility device. The
effect of contact time, pH value, initial Cd<sup>2+</sup>concentration, and ionic
strength on the adsorption capacity of the MBC to Cd<sup>2+</sup>was investigated. The
results showed that the BET surface areas of the MBC and biomass char (BC) were 23.38
m<sup>2</sup>·g<sup>-1</sup>and 7.20 m<sup>2</sup>·g<sup>-1</sup>,
respectively, total pore volumes were 1.04×10<sup>-
1</sup>cm<sup>3</sup>·g<sup>-1</sup>and 2.23×10<sup>-
2</sup>cm<sup>3</sup>·g<sup>-1</sup>, and average pore diameters were 17.74 nm and
12.38 nm. The magnetic susceptibility of the MBC was 42 900×10<sup>-
8</sup>m<sup>3</sup>·kg<sup>-1</sup>. FTIR showed that phenolic hydroxyl and
carboxyl functional groups bound metal ions on the surface of the MBC and BC. The kinetic
data of the MBC were described well by the pseudo-second-order model. Isothermal
adsorption of Cd<sup>2+</sup>by MBC and BC was fitted well by the Freundlich equation.
The adsorption velocity increased with an increase of pH in the region 3-6 and then
stabilized in the region 6-9. The adsorption capacity of Cd<sup>2+</sup>decreased
slightly when ionic strength increased from 1 mmol·L<sup>-1</sup>to 100
mmol·L<sup>-1</sup>, whereas the desorption rate increased from 0.51% to 8.5%. The
adsorption properties and characterization results illustrated that the removal mechanism
of Cd<sup>2+</sup>likely was through adsorption and ion exchange on the surface of the
MBC with a high amount of functional groups. In addition, magnetic adsorbents offered a
significant advantage compared to other adsorbents in the aspect of separation from
aqueous solution.<br/> © 2017, Science Press. All right reserved.
Number of references:47
Main heading:Cadmium compounds
Controlled terms:Adsorption - Biomass - Carbon - Characterization - Composite materials -
Decomposition - Ion exchange - Ionic strength - Iron compounds - Iron ores - Magnetic
susceptibility - Magnetism - Metal ions - Metals - Pyrolysis - Solutions - Straw
Uncontrolled terms:Adsorption capacities - Adsorption properties - Biomass char - Cd^2+ -
Isothermal adsorption - Pseudo-second order model - Siderite - Wheat straws
Classification code:504.3 Heavy Metal Mines - 531.1 Metallurgy - 701.2 Magnetism:
Basic Concepts and Phenomena - 801.4 Physical Chemistry - 802.2 Chemical Reactions -
802.3 Chemical Operations - 804 Chemical Products Generally - 821.5 Agricultural
Wastes - 951 Materials Science
Numerical data indexing:Molar_Concentration 1.00e+00mol/m3 to 1.00e+02mol/m3, Percentage
5.10e-01% to 8.50e+00%, Size 1.24e-08m, Size 1.77e-08m, Specific_Surface_Area 2.34e
+04m2/kg, Specific_Surface_Area 7.20e+03m2/kg
DOI:10.13227/j.hjkx.201612156
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 37>
Accession number:20174804454687
Title:Comparison of Heavy Metal Contamination Characteristics in Surface Water in
Different Functional Areas: A Case Study of Ningbo
Authors:Xu, Mei-Juan (1); Tong, Gui-Hua (2); Sun, Dan (3); Li, Jian-Xin (1); Yu, Xiao-Yi
(1)
Author affiliation:(1) College of Mechanical and Energy Engineering, Ningbo Institute of
Technology, Zhejiang University, Ningbo; 315100, China; (2) Cixi Environment Protection
Burea, Cixi; 315300, China; (3) Cixi Environmental Protection Monitoring Station, Cixi;
315300, China
Corresponding author:Yu, Xiao-Yi(yuxiaoyi@nit.zju.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3218-3224
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:From industrial and commercial areas of Ningbo City, China, 85 surface water
samples were collected. The concentrations of six heavy metals (Cd, Cr, Cu, Ni, Pb, and
Zn) in the samples were measured, and the characteristics of the spatial distributions of
those metals were analyzed. Through a combination of regional characteristics and Pearson
correlation coefficients of the different heavy metals, the main pollution sources of the
two areas were analyzed. The potential ecological risks of these heavy metals were
evaluated by considering health risk and cancer risk indices. The results indicate that
the heavy metal pollution of surface waters was serious in both the industrial and
commercial areas. Furthermore, the differences between the two areas were also observed.
In the industrial area, the average concentrations of the six heavy metals were, from
highest to lowest, in the order: Zn≫Ni>Pb>Cr>Cu>Cd, and the main sources
were industrial emissions. Four heavy metal concentrations exceeded the national
environmental standard, which, from highest to lowest, were in the order:
Cd>Pb>Cr≫Zn. In the commercial area, the average concentrations, from highest to
lowest, were in the order: Cr>Pb≫Zn>Ni>Cd>Cu, and the main sources were
road pollutants. Three heavy metal concentrations exceeded the national standard, and the
order, from highest to lowest, was Cd>Pb≫Cr, with Cd and Pb having the most
potential health risk. In both the industrial and commercial areas, there were some
potential health risks and high carcinogenic risks. Cd, Cr, and Pb have the highest
potential health risks, whereas Cr is the major potentially carcinogenic metal. The
commercial area had 1.7 times the potential carcinogenic risk as that of the industrial
area. The government should pay more attention to heavy metal pollution of surface waters
in Ningbo City, China.<br/> © 2017, Science Press. All right reserved.
Number of references:17
Main heading:Copper
Controlled terms:Cadmium - Chromium - Correlation methods - Health - Health risks - Heavy
metals - Industrial emissions - Lead - Nickel - Pollution - Risk assessment - River
pollution - Surface waters - Water pollution - Zinc
Uncontrolled terms:Environmental standards - Heavy metal concentration - Heavy metal
contamination - Ningbo - Pearson correlation coefficients - Potential ecological risk -
Potential health risks - Regional characteristics
Classification code:444.1 Surface Water - 451.1 Air Pollution Sources - 453 Water
Pollution - 461.6 Medicine and Pharmacology - 461.7 Health Care - 531 Metallurgy and
Metallography - 543.1 Chromium and Alloys - 544.1 Copper - 546.1 Lead and Alloys -
546.3 Zinc and Alloys - 548.1 Nickel - 549.3 Nonferrous Metals and Alloys excluding
Alkali and Alkaline Earth Metals - 914.1 Accidents and Accident Prevention - 922.2
Mathematical Statistics
DOI:10.13227/j.hjkx.201701086
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 38>
Accession number:20174804454715
Title:Effect of Plastic Film Mulching on Methane Emission from a Vegetable Field
Authors:Zhang, Kai-Li (1); Hao, Qing-Ju (1); Feng, Di (1); Shi, Jiang-Lai (1); Shi,
Xiao-Jun (1, 2); Jiang, Chang-Sheng (1)
Author affiliation:(1) Key Laboratory of Eco-environments in Three Gorges Reservoir
Region, College of Resources and Environment, Southwest University, Chongqing; 400716,
China; (2) National Monitoring Station of Soil Fertility and Fertilizer Efficiency on
Purple Soils, Chongqing; 400716, China
Corresponding author:Jiang, Chang-Sheng(jiangcs@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3451-3462
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Using the static opaque chamber method and choosing a chili-radish cropping
system, a field experiment, located in the Key Field Station for Monitoring of Eco-
Environment of Purple Soil of the Ministry of Agriculture of China in the farm of
Southwest University in Chongqing, was conducted in situ for one year. Mulching and non-
mulching treatments were set in the field, and the seasonal variation of
CH<inf>4</inf>flux and CH<inf>4</inf>concentrations in the soil profile and the seasonal
changes in soil moisture and temperature were observed for different treatments to
explore the effect of plastic film mulching on soil moisture and temperature. The results
showed that plastic film mulching can significantly improve the surface soil temperature
during the pepper growing season in spring and summer (P<0.01), but no significant
difference was seen during the radish growing season in autumn and winter (P>0.05).
The soil moisture of the plastic film mulching treatment was significantly higher than
that of no mulching in the radish growing season (P<0.05), but no significant
difference was observed for the pepper growing season (P>0.05). During the whole
observation period and under the condition of plastic film mulching and conventional
planting, the CH<inf>4</inf>flux from soil had no significant seasonal variation under
all treatments, and the mean CH<inf>4</inf>fluxes were-7.64 μg·
(m<sup>2</sup>·h)<sup>-1</sup>and-9.00 μg·(m<sup>2</sup>·h)
<sup>-1</sup>, respectively. The cumulative CH<inf>4</inf>emissions for plastic film
mulching and conventional planting were-0.54 kg·hm<sup>-2</sup>and-0.64
kg·hm<sup>-2</sup>, respectively, in the whole observation period, and all the
treatments showed a net absorption of CH<inf>4</inf>for the whole observation period. The
results showed that the plastic film mulching could weaken the ability of
CH<inf>4</inf>as a sink of the CH<inf>4</inf>for the whole observation period. The
CH<inf>4</inf>concentrations in different soil profiles were in the order 10 cm>20
cm>30 cm, and the concentrations of CH<inf>4</inf>change patterns in different soil
layers were almost identical during the whole observation period. The
CH<inf>4</inf>concentrations at the depths of 20 cm and 30 cm under the plastic film
mulching soil were significantly lower than those under no mulching soil (P<0.05), but
no significant difference was observed for the depth of 10 cm (P>0.05). Correlation
analysis showed that, under the plastic film mulching conditions, CH<inf>4</inf>flux and
the 5 cm geothermal showed significant positive correlation (P<0.05), but
CH<inf>4</inf>flux and soil moisture showed significant negative correlation (P<0.05).
However, under the conventional cultivation conditions, there were no correlations
between CH<inf>4</inf>flux and the 5 cm geothermal or soil moisture. There was also
significant positive correlation between CH<inf>4</inf>concentration in the 10 cm and 20
cm depth soil layers with the CH<inf>4</inf>concentration in surface soil (P<0.01),
and the CH<inf>4</inf>concentration in the 30 cm depth soil layer had significant
positive correlation with the surface soil temperatures and the 5 cm geothermal. There
was no significant correlation between soil CH<inf>4</inf>concentration and soil water
content.<br/> © 2017, Science Press. All right reserved.
Number of references:59
Main heading:Soil surveys
Controlled terms:Agriculture - Cultivation - Moisture - Plastic films - Soil moisture -
Soils - Temperature - Vegetables
Uncontrolled terms:CH4 flux - Plastic film mulching - Soil profiles - Soil temperature -
Vegetable Field
Classification code:483.1 Soils and Soil Mechanics - 641.1 Thermodynamics - 817.1
Polymer Products - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
Numerical data indexing:Size 1.00e-01m, Size 2.00e-01m, Size 3.00e-01m, Size 5.00e-02m
DOI:10.13227/j.hjkx.201701002
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 39>
Accession number:20174804454718
Title:Effects of CaCO<inf>3</inf>Application on Soil Microbial Nitrogen Cycle in an Acid
Soil
Authors:Guo, An-Ning (1, 2); Duan, Gui-Lan (2); Zhao, Zhong-Qiu (1); Tang, Zhong (3);
Wang, Yang-Yang (1); Wang, Bo-Xun (2, 4)
Author affiliation:(1) College of Land Science and Technology, China University of
Geosciences (Beijing), Beijing; 100083, China; (2) Department of Soil Environment
Science, Research Center for Eco-Environment Sciences, Chinese Academy of Sciences,
Beijing; 100085, China; (3) College of Resources and Environment Sciences, Nanjing
Agricultural University, Nanjing; 210095, China; (4) College of Resource Environment and
Tourism, Capital Normal University, Beijing; 100048, China
Corresponding author:Duan, Gui-Lan(duangl@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3483-3488
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Soil nitrification and denitrification are important steps in closing the
nitrogen cycle. Understanding the effects of CaCO<inf>3</inf>application on the
physicochemical properties and nitrogen cycle in acid soil would provide some theoretical
and technical information for stable and sustainable utilization of this agricultural
soil. In this study, a field trial was conducted in Xiangtan city, Hunan province. In
this field, the soil pH was 5.54, and CaCO<inf>3</inf>was applied at four levels: 0,
2.25, 4.5, and 7.5 t·hm<sup>-2</sup>. After one season of rice cultivation, the
soil was sampled to determine dissolved organic carbon (DOC), NH<inf>4</inf><sup>
+</sup>-N, and NO<inf>3</inf><sup>-</sup>-N levels, and the potential nitrification rate
(PNR) and denitrifying enzyme activity (DEA) were measured. The results showed that
CaCO<inf>3</inf>application improved the content of soil DOC (762.10-868.58
mg·kg<sup>-1</sup>) and PNR [0.59-0.82 μg·(g·h)<sup>-1</sup>].
However, excessive application of CaCO<inf>3</inf>(7.5 t·hm<sup>-2</sup>) revealed
an obvious inhibition on the activity of soil nitrification. Furthermore, the result of
Pearson correlation analysis indicated that soil nitrification was positively correlated
with soil DOC and negatively correlated with NH<inf>4</inf><sup>+</sup>-N content,
whereas denitrification had a significant positive correlation with NO<inf>3</inf><sup>-
</sup>-N content and soil DOC, but a negative correlation with water content.<br/> ©
2017, Science Press. All right reserved.
Number of references:26
Main heading:Soils
Controlled terms:Calcium carbonate - Calcium compounds - Carbon - Correlation methods -
Cultivation - Denitrification - Enzyme activity - Nitrification - Nitrogen - Organic
carbon
Uncontrolled terms:Acid soils - CaCO3 - Denitrifying Enzyme Activity (DEA) - Dissolved
organic carbon - Nitrification and denitrification - Nitrogen cycles - Pearson
correlation analysis - Physicochemical property
Classification code:461.9 Biology - 483.1 Soils and Soil Mechanics - 802.2 Chemical
Reactions - 804 Chemical Products Generally - 804.1 Organic Compounds - 821.3
Agricultural Methods - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201701145
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 40>
Accession number:20174804454700
Title:Analysis of High-efficiency Denitrifying Bacteria and Embedding Filler Performance
and Microflora
Authors:Meng, Ting (1); Yang, Hong (1)
Author affiliation:(1) Key Laboratory of Beijing for Water Quality Science and Water
Environmental Recovery Engineering, College of Architectural Engineering, Beijing
University of Technology, Beijing; 100124, China
Corresponding author:Yang, Hong(yhong@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3339-3346
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to study adaptability and recovery capability of high-efficiency
denitrifying bacteria and their embedding filler to low temperature and low substrate
concentration, a test was performed under two conditions (favorable and unfavorable) and
three stages (D<inf>1</inf>, D<inf>2</inf>, and D<inf>3</inf>) to explore the
denitrifying capability of the bacteria. The favorable condition was a reacting
temperature of 30℃, a nitrate concentration of 300 mg·L<sup>-1</sup>, and a
C/N ratio of 10; and the unfavorable condition was a reacting temperature of 4℃, a
nitrate concentration of 30 mg·L<sup>-1</sup>, and a C/N ratio of 5. In stage
D<inf>1</inf>, high-efficiency denitrifying bacteria [300 mg·(L·h)<sup>-
1</sup>], which were cultured at favorable condition, were placed under the unfavorable
condition. In stage D<inf>2</inf>, the bacteria were embedded after the denitrifying
performance was stable, and then this embedded filler was placed under the unfavorable
condition and recovered in the favorable condition (D<inf>3</inf>) after 90 days. The
results show that the denitrification rates of stages D<inf>1</inf>and
D<inf>2</inf>finally stabilized at 5.4 mg·(L·h)<sup>-1</sup>and 4.8
mg·(L·h)<sup>-1</sup>, respectively, after operation for 17 d and 16 d,
indicating that the bacteria and their embedding filler adapted to the unfavorable
conditions of low temperature and low substrate concentration. In stage D<inf>3</inf>,
the denitrifying rate of the filler reached 300 mg·(L·h)<sup>-1</sup>after
operation for only 12 d, indicating that the filler had rapid self-recovery capability.
Scanning electron microscopy (SEM) was utilized to analyze the internal and external
structures of the embedding filler and it was determined that both the internal and
external structures were favorable for bacterial growth metabolism and mass transfer. The
high-throughput sequencing analysis results show that the dominant genera in stage
D<inf>2</inf>were still Pseudomonas, Thauera, and Gelidibacter, which have denitrifying
functions, thereby indicating adaptability of the bacteria under the unfavorable
condition. The dominant genera Thauera, Petrimonas, and Pseudomonas of the embedding
filler in stage D<inf>3</inf>were identical to the dominant genera of the high-efficiency
denitrifying bacteria cultured under the initial favorable condition, which also showed
that the bacteria embedding filler had good recovery capability.<br/> © 2017,
Science Press. All right reserved.
Number of references:24
Main heading:Bacteria
Controlled terms:Denitrification - Efficiency - Electron microscopy - Fillers - Mass
transfer - Nitrates - Recovery - Scanning electron microscopy - Temperature
Uncontrolled terms:Denitrification rate - Denitrifying bacteria - High-throughput
sequencing - Microflora - Nitrate concentration - Performance - Recovery capabilities -
Substrate concentrations
Classification code:641.1 Thermodynamics - 641.3 Mass Transfer - 802.2 Chemical
Reactions - 804.2 Inorganic Compounds - 913.1 Production Engineering
Numerical data indexing:Age 2.47e-01yr, Mass_Density 3.00e-01kg/m3, Mass_Density 3.00e-
02kg/m3
DOI:10.13227/j.hjkx.201701052
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 41>
Accession number:20174804454716
Title:Responses of Soil Ammonia Oxidizers to Simulated Warming and Increased
Precipitation in a Temperate Steppe of Inner Mongolia
Authors:Zhang, Cui-Jing (1, 2); Shen, Ju-Pei (1, 2); Sun, Yi-Fei (1, 2); Wang, Jun-Tao
(1); Yang, Zhong-Ling (3); Han, Hong-Yan (3); Zhang, Li-Mei (1, 2); Wan, Shi-Qiang (3);
He, Ji-Zheng (1, 2)
Author affiliation:(1) State Key Laboratory of Urban and Regional Ecology, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085,
China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3)
Laboratory of Global Change Ecology, College of Life Sciences, Henan University, Kaifeng;
475004, China
Corresponding author:Shen, Ju-Pei(jpshen@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3463-3472
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Soil ammonia oxidizers, as key players for the ammonia oxidation process in soil
N cycling, could respond, adapt, and give feedback to global change. In this research,
soil samples were collected from a long-term field experiment with increased
precipitation and warming in a temperate steppe of Inner Mongolia. We analyzed the
responses of the abundance, diversity, and community structure of ammonia-oxidizing
archaea (AOA) and ammonia-oxidizing bacteria (AOB) to warming and increased precipitation
using quantitative real-time PCR, terminal restriction fragment length polymorphism (T-
RFLP), and clone library. The results showed that increased precipitation significantly
stimulated soil pH and warming significantly reduced soil respiration (SR). No
significant difference was detected regarding the abundances of amoA genes across all
treatments, whereas increased precipitation significantly affected the community
structure of soil AOB. However, the interactive effect between warming and increased
precipitation had no significant influence on the community structure of soil ammonia
oxidizers. The result of the structural equation model indicated that the plant diversity
and community structures of soil ammonia oxidizers were significantly correlated,
suggesting that there were certain relationships among climate change, microbes, and
plants. In conclusion, this study confirmed that soil microorganisms had the ability to
adapt to climate change, which could provide important information for predicting future
changes in ecosystems.<br/> © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Soil surveys
Controlled terms:Ammonia - Bacteria - Climate change - Climate models - Global warming -
Microorganisms - Nobelium - Oxidation - Plants (botany) - Polymerase chain reaction -
Social sciences - Soils
Uncontrolled terms:Ammonia oxidizing archaea (AOA) - Ammonia oxidizing bacteria -
Ammonia-oxidizing archaea - Interaction - Long-term field experiments - Plant diversity -
Structural equation modeling - Terminal restriction fragment length polymorphisms
Classification code:443 Meteorology - 443.1 Atmospheric Properties - 461.9 Biology -
483.1 Soils and Soil Mechanics - 622.1 Radioactive Materials, General - 801.2
Biochemistry - 802.2 Chemical Reactions - 804.2 Inorganic Compounds - 921 Mathematics
- 971 Social Sciences
DOI:10.13227/j.hjkx.201702178
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 42>
Accession number:20174804454698
Title:Community Structure of Microorganisms and Its Seasonal Variation in Beihai Lake
Authors:Zhang, Ya-Jie (1); Li, Ke (1, 2); Zhu, Hao-Ran (1); Zhang, Hong-Xun (1)
Author affiliation:(1) College of Resources and Environment, University of Chinese
Academy of Sciences, Beijing; 101408, China; (2) Water Affairs Research Institute, North
China University of Water Resources and Electric Power, Zhengzhou; 450045, China
Corresponding author:Zhang, Hong-Xun(hxzhang@ucas.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3319-3329
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Water samples were collected in summer, autumn, winter, and spring in Beihai
Lake for the analysis of water quality and microbial community structure. It was found
that the water quality in summer and autumn was worse than in winter and spring, and TN
and TP were the most important factors affecting the water quality. The microbial
community structure was investigated using MiSeq high-throughput sequencing. It was found
that the phyla Cyanobacteria, Proteobacteria, Actinobacteria, and Bacteroidetes were
abundant in all the samples, whereas their relative abundances differed among the four
seasons. In summer and autumn, the microbial diversities were higher, and the phylum
Cyanobacteria was most abundant, with the genus Synechococcus dominant. In winter, the
phylum Proteobacteria was dominant. In spring, Actinobacteria and Bacteroidetes were
abundant, accounting for 51.5%-64.3% of the bacterial community. The redundancy analysis
(RDA) results showed that the microbial communities were mostly affected by water
temperature in Beihai Lake. Overall, the water quality of Beihai Lake was qualified for
the use of landscape water. However, the abundance of Synechococcus in summer may lead to
algal blooms. Thus, it is necessary to strengthen the monitoring and estimation of water
quality in Beihai Lake.<br/> © 2017, Science Press. All right reserved.
Number of references:53
Main heading:Quality control
Controlled terms:Lakes - Microorganisms - Social sciences - Throughput - Water quality
Uncontrolled terms:Community structures - Environmental factors - High-throughput
sequencing - Microbial communities - Microbial community structures - Microbial diversity
- Redundancy analysis (RDA) - Water quality assessments
Classification code:445.2 Water Analysis - 461.9 Biology - 913.3 Quality Assurance and
Control - 971 Social Sciences
Numerical data indexing:Percentage 5.15e+01% to 6.43e+01%
DOI:10.13227/j.hjkx.201612253
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 43>
Accession number:20174804454686
Title:Impacts of Thermal Stratification on the Hydrochemistry and Dissolved Inorganic
Carbon in a Typical Karst Reservoir in Summer
Authors:Wu, Fei-Hong (1, 2); Pu, Jun-Bing (2); Li, Jian-Hong (2); Zhang, Tao (1, 2); Li,
Li (1, 2); Huang, Si-Yu (2)
Author affiliation:(1) Chongqing Key Laboratory of Karst Environment, School of
Geographical Sciences, Southwest University, Chongqing; 400715, China; (2) Ministry of
Land and Resources & Guangxi, Institute of Karst Geology, Chinese Academy of
Geological Sciences, Guilin; 541004, China
Corresponding author:Pu, Jun-Bing(junbingpu@karst.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3209-3217
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Thermal stratification leads to significant stratification characteristics of
hydrochemistry and aquatic organisms in reservoirs, and thus affects the biogeochemical
cycle in the reservoir. This study aims to understand physico-chemical properties and
dissolved inorganic carbon change processes and its factors in a karst groundwater-fed
reservoir, Dalongdong Reservoir, located in Shanglin County, Guangxi Zhuang Autonomous
Region, China. The eight sampling points were placed along the direction of the water
flow on June 19-21, 2015. The results show that: ① The reservoir exhibited obvious
thermal stratification in the summer. There were significant differences in physical and
chemical parameters, such as pH and conductivity (Spc) between the epilimnion and
thermocline; ② The dissolved oxygen (DO) and chlorophyll a (Chl-a) content from the
surface to the bottom did not show a single decreasing trend, but the maximum value
occurred 2.5 m or 5 m below the surface; ③ From the surface to the bottom,
dissolved inorganic carbon (DIC) concentrations showed an increasing trend with the
average DIC concentration of 2.03 mmol·L<sup>-1</sup>in the epilimnion and the
average DIC concentration of 4.18 mmol·L<sup>-1</sup>at the bottom of the
thermocline. The value of stable carbon isotope (δ<sup>13</sup>C<inf>DIC</inf>) was
more positive in the epilimnion than in the thermocline, where
δ<sup>13</sup>C<inf>DIC</inf>gradually became partially negative with water depth.
Possible reasons of these results include: ① The significant differences in
temperature, distribution of aquatic organisms, and strength and direction of metabolisms
in different water layers due to thermal stratification; ② The DIC variations in
the epilimnion were mainly affected by the carbonate precipitation process and
phytoplankton photosynthesis, thereby affecting the DIC stable isotope fractionation. DIC
was mainly controlled by biological respiration and the organic matter decomposition
process in the thermocline.<br/> © 2017, Science Press. All right reserved.
Number of references:31
Main heading:Aquatic organisms
Controlled terms:Biochemical oxygen demand - Biogeochemistry - Carbon - Dissolution -
Dissolved oxygen - Flow of water - Groundwater - Groundwater geochemistry -
Hydrochemistry - Isotopes - Landforms - Metabolism - Precipitation (chemical) - Stream
flow - Thermal stratification
Uncontrolled terms:Carbonate precipitation - Dissolved inorganic carbon - Karst
reservoirs - Organic matter decomposition - Physical and chemical parameters -
Physicochemical property - Stable carbon isotopes - Stable isotope fractionations
Classification code:444.2 Groundwater - 471 Marine Science and Oceanography - 481.1
Geology - 481.2 Geochemistry - 631.1 Fluid Flow, General - 631.1.1 Liquid Dynamics -
802.3 Chemical Operations - 804 Chemical Products Generally
Numerical data indexing:Molar_Concentration 2.03e+00mol/m3, Molar_Concentration 4.18e
+00mol/m3, Size 2.50e+00m, Size 5.00e+00m
DOI:10.13227/j.hjkx.201703138
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 44>
Accession number:20174804454697
Title:Rhizosphere Microbial Diversity in Different Wetland Microcosms
Authors:Wang, Lin (1); Li, Bing (1, 2); Yu, Jia-Hui (1); Zhu, Jia-Bin (1); Zhu, Jian (1,
2)
Author affiliation:(1) Wuxi Fisheries College, Nanjing Agricultural University, Wuxi;
214081, China; (2) Key Laboratory of Genetic Breeding and Aquaculture Biology of
Freshwater Fishes, Freshwater Fisheries Research Center, Chinese Academy of Fishery
Sciences, Wuxi; 214081, China
Corresponding author:Zhu, Jian(zhuj@ffrc.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3312-3318
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To investigate the rhizosphere microbial community structure characteristics in
varying combinations of plants and filter materials in the process of aquaculture pond
water treatment, six types of wetland microcosms were established using two kinds of
plants (Zizania latifolia Turcz. and Sagittaria graminea) and two types of filter
materials (garnet and magnetite). High-throughput sequencing technology was used to
analyze the microbial structural features and composition diversity of the wetland
rhizosphere. The results were as follows. The microorganisms recovered belonged to 52
phyla, 118 classes, 455 families, 905 genera, and 1 426 species. Based on the Shannon
index, Zizania latifolia Turcz. (average value: 5.77) had a higher capacity than
Sagittaria graminea(average value: 5.29) in terms of microbial enrichment. However, the
rate of Proteobacteria in the rhizosphere microorganism communities of the Sagittaria
graminea and Zizania latifolia Turcz. microcosms were 61.97% and 51.78%, respectively,
further showing that the roots of Sagittaria graminea in the wetland microcosms better
enriched the Proteobacteria during the experimental period. The major bacterial groups of
different plant roots were enriched with β-Proteobacteria in the experiment. The
results of this study provide a theoretical basis for species optimization in artificial
wetland systems and best combination of wetland construction that will be useful for
future investigations.<br/> © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Wetlands
Controlled terms:Microorganisms - Soils - Throughput - Water quality - Water treatment
Uncontrolled terms:High-throughput sequencing - Microbial communities - Proteobacteria -
Rhizosphere - Water quality analysis
Classification code:445.1 Water Treatment Techniques - 445.2 Water Analysis - 461.9
Biology - 483.1 Soils and Soil Mechanics
Numerical data indexing:Percentage 5.18e+01%, Percentage 6.20e+01%
DOI:10.13227/j.hjkx.201701030
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 45>
Accession number:20174804454692
Title:Characteristics of Carbon Transportation Under Rainfall Events and Associated
Carbon Loss Evaluation in Loess Plateau, China: A Case Study of Yangjuangou Dam Watershed
Authors:E, Xin-Hui (1, 3); Wang, Ya-Feng (1); Gao, Yang (2); Chen, Li-Ding (1); Chen,
Shi-Bo (2, 4); Chen, Wei-Liang (1)
Author affiliation:(1) State Key Laboratory of Urban and Regional Ecology, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085,
China; (2) Key Laboratory of Ecosystem Network Observation and Modeling, Institute of
Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing;
100101, China; (3) University of Chinese Academy of Sciences, Beijing; 100049, China; (4)
College of Geoscience and Surveying Engineering, China University of Mining and
Technology(Beijing), Beijing; 100083, China
Corresponding author:Wang, Ya-Feng(yfwang@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3264-3272
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this study, by monitoring carbon transportation and its rainfall-runoff
process during the rainy season in Loess Plateau's Yangjuangou dam watershed, we analyzed
changes in carbon transportation driven by rainfall and further evaluated the C loss flux
for the dam watershed. Results showed that the monthly C wet deposition flux for the wet
and dry seasons were 3.33 kg·hm<sup>-2</sup>and 2.18 kg·hm<sup>-2</sup>,
respectively, which were only small contributions to C transportation for the watershed.
C transportation under the rainfall-runoff process in this watershed can reach 944.89
kg·km<sup>-2</sup>and 300.29 kg·km<sup>-2</sup>in August and September,
respectively. Different intensities of rainfall runoff lead to different C loss
processes, wherein dissolved inorganic carbon (DIC) is the main C form. Under small
rainfall events, the output of dissolved total carbon (DTC) in this watershed was 156.98
kg·km<sup>-2</sup>; and the output of moderate rainfall events was 284.60
kg·km<sup>-2</sup>. Finally, we determined that the C loss modulus of the
Yangjuangou watershed was 1.89 kg·(km<sup>2</sup>·mon)<sup>-1</sup>in the
rainy season, thus the C loss modulus for the study area could reach 2.70 kg·
(km<sup>2</sup>·a)<sup>-1</sup>.<br/> © 2017, Science Press. All right
reserved.
Number of references:26
Main heading:Rain
Controlled terms:Dams - Landforms - Runoff - Sediments - Transportation - Watersheds
Uncontrolled terms:Carbon loss - Dissolved inorganic carbon - Loess Plateau - Rainfall
event - Rainfall runoff - Rainfall-runoff process - Wet and dry seasons - Wet deposition
flux
Classification code:441.1 Dams - 443.3 Precipitation - 444.1 Surface Water - 481.1
Geology - 483 Soil Mechanics and Foundations
DOI:10.13227/j.hjkx.201612074
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 46>
Accession number:20174804454678
Title:Exhaust Emission Characteristics of Typical Alkanes from Heavy-Duty Diesel Vehicles
Based on a Portable Emission Measurement System
Authors:Shi, Chun-Zhen (1); Hao, Xue-Wei (1); Shen, Xian-Bao (1); Cao, Xin-Yue (1);
Zhang, Wei (1); Wu, Hui (1); Yao, Zhi-Liang (1)
Author affiliation:(1) Department of Environmental Science and Engineering, School of
Food and Chemical Engineering, Beijing Technology and Business University, Beijing;
100048, China
Corresponding author:Yao, Zhi-Liang(yaozhl@th.btbu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3146-3152
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The on-road emissions of typical alkanes from 11 heavy-duty diesel vehicles with
different emission standards (from China I to China IV;) were tested using a portable
emission measurement system(PEMS) and quantified by gas chromatography-mass spectrometry
(GC-MS). Our aim was to analyze the emission characteristics of typical alkanes in
heavy-duty diesel vehicle exhaust. The results show that the emission standard
significantly affected the emission factors (EFs) of n-alkanes and hopanes. Vehicles with
higher emission standards had lower EFs. Compared with China I vehicles, the total EFs of
n-alkanes, 17α(H), 21β(H)-C30 hopane (C30-hopane), and 22S-and 22R-17α
(H), 21β(H)-homohopane (22S-C31 and 22R-C31 homohopane) from China IV; vehicles were
significantly reduced by 72.23%, 64.95%, 70.78%, and 74.68%, respectively. The peak
carbon numbers of gaseous n-alkanes were 17 to 18, while they were 18 to 21 in
particulate n-alkanes. The 22S-C31 homohopane/(22S-C31 homohopane + 22R-C31 homohopane)
ratios ranged from 0.46 to 0.56, with an average of 0.50, which conform to the
characteristics of hopanes in petroleum. The total EFs of n-alkanes had a good linear
relationship with the total EFs of C30-hopane, and the R<sup>2</sup>was 0.9268.
Furthermore, the driving conditions had a great influence on the emissions of n-alkanes
and hopanes. Specifically, the EFs of n-alkanes and hopanes on non-highway roads were
1.69 to 2.42 times greater than those on highways.<br/> © 2017, Science Press. All
right reserved.
Number of references:27
Main heading:Paraffins
Controlled terms:Air pollution control equipment - Carbon - Diesel engines - Diesel
locomotives - Gas chromatography - Gas emissions - Mass spectrometry - Off road vehicles
- Transportation - Vehicles
Uncontrolled terms:Driving conditions - Emission characteristics - Emission measurement
systems - Gas chromatography-mass spectrometries (GC-MS) - Heavy duty diesel vehicles -
Linear relationships - n-Alkanes - On-road emissions
Classification code:451.2 Air Pollution Control - 612.2 Diesel Engines - 682.1.2
Locomotives - 801 Chemistry - 802.3 Chemical Operations - 804 Chemical Products
Generally
Numerical data indexing:Percentage 6.50e+01%, Percentage 7.08e+01%, Percentage 7.22e+01%,
Percentage 7.47e+01%
DOI:10.13227/j.hjkx.201705161
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 47>
Accession number:20174804454675
Title:Atmospheric Dry Deposition Fluxes and Sources of Polycyclic Aromatic Hydrocarbons
in Lanzhou Valley, Northwest China
Authors:Ju, Yuan-Li (1); Liu, Pan-Liang (1); Yu, Zhou-Suo (2); Gao, Hong (1); Mao, Xiao-
Xuan (1); Ma, Jian-Min (1); Huang, Tao (1)
Author affiliation:(1) Key Laboratory for Environmental Pollution Prediction and Control,
College of Earth and Environmental Sciences, Lanzhou University, Lanzhou; 730000, China;
(2) Lanzhou Environmental Monitoring Station, Lanzhou; 730000, China
Corresponding author:Gao, Hong(honggao@lzu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3120-3129
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The atmospheric dry deposition flux pollution levels were determined and the
sources apportioned for 15 US EPA priority polycyclic aromatic hydrocarbons (PAHs)
collected at 13 sampling sites in the Lanzhou valley using passive sampling techniques.
The results are as follows. The annual atmospheric dry deposition fluxes ranged from 7.48
to 53.94 μg·(m<sup>2</sup>·d)<sup>-1</sup>, with a mean of 18.65
μg·(m<sup>2</sup>·d)<sup>-1</sup>. The highest flux levels for both the
heating and non-heating seasons, 60.85 μg·(m<sup>2</sup>·d)<sup>-
1</sup>and 47.03 μg·(m<sup>2</sup>·d)<sup>-1</sup>, respectively,
appeared at the traffic site (Donggang Bridge), where the heaviest traffic in the Lanzhou
valley occurs. The lowest flux levels of 8.16 μg·(m<sup>2</sup>·d)
<sup>-1</sup>and 6.80 μg·(m<sup>2</sup>·d)<sup>-1</sup>for the heating
and non-heating seasons, respectively, were found at Baita Mountain, which has a higher
percentage of vegetation cover. Meanwhile, the flux levels at the background site
(Guantangou Mountain) were significantly lower than those of the other sampling sites.
For dry deposition, the PAH components Phe, Flua, Flu, and Pyr were dominant in the
heating and non-heating periods, and the sums of the percentages of 3-and 4-ring PAHs
were 87.53% for the heating season and 82.73% for the non-heating season. Moreover, the
percentage of 5-and 6-ring PAHs for the non-heating period was higher than that for the
heating period, which may be because the lighter PAHs were easily volatilized, and thus
escaped. Furthermore, the sources of atmospheric dry deposition were identified by
principal component analysis (PCA). The results of source apportionment showed that the
main atmospheric PAH dry deposition in the Lanzhou valley were from vehicle exhaust
emissions, coal combustion, and the coking industry. In further detail, coal combustion
and the coking industry contributed most of the PAH dry deposition emissions during the
heating period except for the traffic area site of Donggang Bridge, whereas vehicle
exhaust was the dominant contributor during the non-heating season. In addition, the
annual average dry deposition velocities of atmospheric PAHs were calculated using the
dry deposition model for three sites: 0.20 cm·s<sup>-1</sup>downtown
(Environmental Protection Agency of Lanzhou; JCZ), 0.15 cm·s<sup>-1</sup>in an
industrial area (Lanyuan Hotel of Xigu; LLH), and 0.17 cm·s<sup>-1</sup>in a
traffic area (the Staff Hospital of Gansu Province; ZGH), of which the latter two were
relatively lower because of comprehensive meteorological factors such as wind speed,
temperature, and land use categories. Regarding the dry deposition flux values of the 3-
and 4-ring PAHs, the simulated values were a bit larger than the observed values, but all
were at the same level of magnitude. However, the simulated flux values were closer to
their observed values for 4-ring PAHs than for 3-ring PAHs, which indicated that 3-ring
PAHs were lost more easily than 4-ring PAHs were during monitoring.<br/> © 2017,
Science Press. All right reserved.
Number of references:36
Main heading:Polycyclic aromatic hydrocarbons
Controlled terms:Aromatic compounds - Aromatic hydrocarbons - Coal combustion - Coal
industry - Coking - Deposition - Environmental Protection Agency - Heating - Hydrocarbons
- Land use - Landforms - Principal component analysis - Wind
Uncontrolled terms:Distribution characteristics - Dry deposition fluxes - Dry deposition
velocities - Lanzhou - Source appointment
Classification code:403 Urban and Regional Planning and Development - 443.1 Atmospheric
Properties - 454.2 Environmental Impact and Protection - 481.1 Geology - 524 Solid
Fuels - 802.3 Chemical Operations - 804.1 Organic Compounds - 922.2 Mathematical
Statistics
Numerical data indexing:Percentage 8.27e+01%, Percentage 8.75e+01%, Velocity 1.50e-03m/s,
Velocity 1.70e-03m/s, Velocity 2.00e-03m/s
DOI:10.13227/j.hjkx.201701192
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 48>
Accession number:20174804454409
Title:Life Cycle Assessment of Traction Lead-acid Batteries for Electric Bikes in China
Authors:Liu, Wei (1); Tian, Jin-Ping (2); Chen, Lü-Jun (2, 3)
Author affiliation:(1) School of Environmental Science and Engineering, Shandong
University, Ji'nan; 250100, China; (2) School of Environment, Tsinghua University,
Beijing; 100084, China; (3) Zhejiang Provincial Key Laboratory of Water Science and
Technology, Jiaxing; 314006, China
Corresponding author:Tian, Jin-Ping(tianjp@tsinghua.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3544-3552
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This research undertook a life cycle assessment (LCA) for lead-acid batteries
(LABs) used in electric bikes, the fastest growing LABs in China. A cradle-to-grave LCA
model was established to identify the key materials or processes that contribute most to
environmental impacts within the life cycle of LABs, including material production,
battery manufacture, transportation, use, and end-of-life. A large amount of primary data
obtained from enterprisers and a Chinese LCA database were used in this research to
reflect the status of technology and environmental management for the related industries
in China. The results indicate that material production and LAB use dominate in resource
consumption and environmental impacts during the life cycle of LABs. Material production
is the most important driver of such impacts as abiotic resources depletion (699%),
eutrophication (89%), photochemical smog production (98%), ozone depletion (117%), total
human toxicity (159%), and ecological toxicity (484%). Battery use is responsible for 83%
of primary energy use and contributes the highest potentials to the impacts related to
energy, including global warming potential (86%) and acidification potential (70%).
Recovery of materials at the end-of-life stage will significantly mitigate the overall
life cycle impacts by reducing virgin material consumption. Based on the findings, there
are several substantial opportunities to reduce the overall environmental impacts of
batteries, such as prolonging the lifetime of batteries, reducing the metal consumption
in batteries, and improving the technology and management in recovery of end-of-life
batteries.<br/> © 2017, Science Press. All right reserved.
Number of references:23
Main heading:Life cycle
Controlled terms:Bicycles - Electric batteries - Electric traction - Electric vehicles -
Energy utilization - Environmental impact - Environmental management - Environmental
technology - Eutrophication - Global warming - Laboratories - Lead acid batteries -
Manufacture - Materials handling - Metal recovery - Ozone layer - Toxicity
Uncontrolled terms:Battery manufacture - Ecological toxicity - Electric bikes - End-of-
life batteries - Global warming potential - Lead emission - Life Cycle Assessment (LCA) -
Resource consumption
Classification code:432.2 Passenger Highway Transportation - 443.1 Atmospheric
Properties - 454 Environmental Engineering - 454.2 Environmental Impact and Protection
- 461.7 Health Care - 525.3 Energy Utilization - 537.1 Heat Treatment Processes -
702.1 Electric Batteries - 702.1.2 Secondary Batteries
Numerical data indexing:Percentage 1.17e+02%, Percentage 1.59e+02%, Percentage 4.84e+02%,
Percentage 6.99e+02%, Percentage 7.00e+01%, Percentage 8.30e+01%, Percentage 8.60e+01%,
Percentage 8.90e+01%, Percentage 9.80e+01%
DOI:10.13227/j.hjkx.201612146
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 49>
Accession number:20174804454684
Title:Fluorescence Characterization of Fractionated Colloids in Wastewaters Received by
Huangpu River
Authors:Nie, Ming-Hua (1); Yan, Cai-Xia (1, 2); Yang, Yi (2, 3); Zhou, Jun-Liang (2);
Liu, Min (3)
Author affiliation:(1) Key Laboratory of Poyang Lake Wetland and Watershed Research,
School of Geography and Environment, Jiangxi Normal University, Nanchang; 330022, China;
(2) State Key Laboratory of Estuarine and Coastal Research, East China Normal University,
Shanghai; 200062, China; (3) Key Laboratory of Geographic Information Science, School of
Geographical Sciences, East China Normal University, Shanghai; 200241, China
Corresponding author:Yan, Cai-Xia(wysycx@foxmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3192-3199
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The spectral characteristics of fractionated colloids in wastewaters from
Huangpu River were isolated and investigated via cross flow ultrafiltration systems with
different molecular mass of membranes and three-dimensional excitation-emission matrix
fluorescence spectroscopy. The results showed that the colloidal concentration (CC) and
colloidal organic carbon content (COC) of all size fractions in all samples were in the
ranges 9.60-32.50 mg·L<sup>-1</sup>and 0.03-6.25 mg·L<sup>-1</sup>,
respectively. Moreover, both CC and COC values increased as the colloidal size increased.
The protein-(i.e., peaks D and T) and humic-like (peaks C and A) materials were present
in all the size fractions (except for the M<inf>r</inf>300×10<sup>3</sup>-1 μm
size fraction of the influent sample), of which protein-and humic-like materials were
mainly in the M<inf>r</inf>1×10<sup>3</sup>-5×10<sup>3</sup>and
M<inf>r</inf>10×10<sup>3</sup>-300×10<sup>3</sup>size fractions,
respectively. In addition, fluorescence indices (including the fluorescence index (FI),
humification index (HIX), and the index of recent autochthonous contribution (BIX)) were
introduced to determine the source and spectral characteristic of the selected colloids.
These indices indicated that the relatively small colloids with high aromaticity and
hydrophobicity mainly originated from terrestrial sources, whereas the relatively large
colloids were predominantly from the recent autochthonous organic matter and the
protein-like components.<br/> © 2017, Science Press. All right reserved.
Number of references:32
Main heading:Colloids
Controlled terms:Carbon - Characterization - Fluorescence - Fluorescence spectroscopy -
Fractionation - Organic carbon - Proteins - Rivers - Wastewater
Uncontrolled terms:Colloidal concentrations - Colloidal organic carbon - Cross-flow
ultrafiltration - Excitation-emission matrix fluorescence spectroscopies - Fluorescence
indices - Huangpu River - Humification index (HIX) - Spectral characteristics
Classification code:452.3 Industrial Wastes - 741.1 Light/Optics - 741.3 Optical
Devices and Systems - 801.3 Colloid Chemistry - 802.3 Chemical Operations - 804
Chemical Products Generally - 804.1 Organic Compounds - 951 Materials Science
Numerical data indexing:Mass_Density 3.00e-05kg/m3 to 6.25e-03kg/m3, Mass_Density 9.60e-
03kg/m3 to 3.25e-02kg/m3
DOI:10.13227/j.hjkx.201612204
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 50>
Accession number:20174804454695
Title:Functional Group Characteristics of Planktonic Diatoms and Their Relationship with
Environmental Factors in the Ruxi River
Authors:Xiang, Rong (1); Li, Qiao-Yu (1); Yu, Yi (1); Zhang, Hong-Bo (1); Dong, Cong-Cong
(1); Shi, Jun-Qiong (1); Wu, Zhong-Xing (1)
Author affiliation:(1) Key Laboratory of Eco-environments in Three Gorges Reservoir
Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources
Research in Three Gorges Reservoir Region, Southwest University, Chongqing; 400715, China
Corresponding author:Wu, Zhong-Xing(wuzhx@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3290-3301
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To elucidate the functional group characteristics of planktonic diatoms and
their relationship with environment factors in the Ruxi River, multivariate statistical
analysis and functional group classification were conducted in this study. The success
pattern of a diatom functional group and its driving factor were analyzed for the Ruxi
River, a typical tributary of Three Gorges Reservoir, after the phytoplankton community
and environmental variables were investigated at three different stages: level water
period (April 2014), dry season (December 2014), and wet season (July 2014), based on the
characteristic of water level. The results showed that there were 10 diatom functional
groups in the Ruxi River: the A, B, C, D, L<inf>o</inf>, MP, P, T<inf>B</inf>, X3, and S1
groups, and among them, MP was the most groups, but the dominant group was D group.
Stepwise multiple regression analysis indicated that ρ(TN) in the water column was
the primary factor significantly affecting the densities in the normal water period,
whereas turbidity, alkalinity, and pH significantly influenced the functional group
densities in the normal water period. In the high water period, however, transparency was
the most important environmental factor affecting the functional group densities.
Additionally, the results of RDA analysis found that water temperature, electrical
conductivity (Spc), oxidation-reduction potential (ORP), ρ(DO), and ρ
(NO<inf>3</inf><sup>-</sup>-N) were the main environmental factors that influenced the
diversity of diatom functional groups in the Ruxi River. These results suggested that
functional groups could well reflect the habitat characteristics of the Ruxi River and
the effect of the nutrient element, nitrogen, to the success of phytoplankton functional
groups and changes of water quality in the Ruxi River should be paid more attention.<br/>
© 2017, Science Press. All right reserved.
Number of references:35
Main heading:Water resources
Controlled terms:Algae - Alkalinity - Factor analysis - Functional groups - Multivariant
analysis - pH effects - Phytoplankton - Redox reactions - Regression analysis -
Reservoirs (water) - Rivers - Water levels - Water quality
Uncontrolled terms:Electrical conductivity - Environmental factors - Environmental
variables - Multivariate statistical analysis - Oxidation reduction potential -
Planktonic diatoms - Stepwise multiple regression - Three gorges reservoir
Classification code:441.2 Reservoirs - 444 Water Resources - 445.2 Water Analysis -
471 Marine Science and Oceanography - 801.1 Chemistry, General - 802.2 Chemical
Reactions - 804.1 Organic Compounds - 922 Statistical Methods - 922.2 Mathematical
Statistics
DOI:10.13227/j.hjkx.201701111
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 51>
Accession number:20174804454719
Title:Responses of Extracellular Enzymes to Nitrogen Application in Rice of Various Ages
with Rhizosphere and Bulk Soil
Authors:Wei, Liang (1, 2); Tang, Zhen-Zhu (1, 3); Zhu, Zhen-Ke (1); Cai, Guan (1, 4); Ge,
Ti-Da (1); Wang, Jiu-Rong (1); Wu, Jin-Shui (1)
Author affiliation:(1) Key Laboratory of Subtropical Agriculture Ecology, Institute of
Subtropical Agriculture, Chinese Academy of Sciences, Changsha; 410125, China; (2)
University of Chinese Academy of Sciences, Beijing; 100049, China; (3) College of
Resources and Environment, Hubei University, Wuhan; 430062, China; (4) College of
Resources and Environment, Hunan agricultural University, Changsha; 410128, China
Corresponding author:Zhu, Zhen-Ke(zhuzhenke@isa.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3489-3496
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Ecological enzyme activities are closely relevant to the carbon and nitrogen
decomposition and mineralization of paddy soils, which can reflect the growth and
metabolism of microorganisms. In order to clarify the response to nitrogen application by
different enzymes in the rhizosphere and bulk soil of rice, the rhizosphere and bulk soil
were identified using a rhizosphere bag. In addition, the β-1, 4-glucosidase (BG)
enzyme; β-1, 4-N-acetylglucosaminidase (NAG) enzyme; and the effects of the
rhizosphere, nitrogen application, and growth period on soil enzyme activities were
analyzed. The results showed that the activity of the BG enzyme decreased by 7.4-13.5
nmol·(g·h)<sup>-1</sup>in the jointing stage and increased by 7.0-31.4
nmol·(g·h)<sup>-1</sup>in the maturity stage, and the activity of the BG
enzyme in the rhizosphere and bulk soil also changed with the growth period of
rice.compared with no nitrogen fertilizer, nitrogen application increased NAG enzyme
activity by 1.1 times and rhizosphere soil by 0.3 times in the bulk soil in the maturity
stage. Nitrogen application and growth period had significant effects on soil BG enzyme
activity, whereas the interaction within rice growth stage, nitrogen application, and
rhizosphere effect had significant effects on NAG enzyme activity. The result of RDA
showed that the soil microbial biomass carbon (MBC) and dissolved organic carbon (DOC)
contents mainly affected the activity of extracellular enzymes in the rice rhizosphere
soil, whereas the activities of enzymes in the rhizosphere soil were mainly affected by
microbial biomass nitrogen (MBN) and NH<inf>4</inf><sup>+</sup>-N. The relationships
between soil enzyme activity and various factors are complex, and the effects of nitrogen
addition on microbial community composition needs to be considered after accounting for
plant physiological characteristics, soil enzyme activity, and soil characteristics.<br/>
© 2017, Science Press. All right reserved.
Number of references:32
Main heading:Enzyme activity
Controlled terms:Ecology - Enzymes - Microorganisms - Nitrogen - Nitrogen fertilizers -
Organic carbon - Soils
Uncontrolled terms:Dissolved organic carbon - Extracellular enzyme activity - Microbial
community composition - Paddy soils - Physiological characteristics - Rhizosphere soils -
Rice growths - Soil microbial biomass carbons
Classification code:454.3 Ecology and Ecosystems - 461.9 Biology - 483.1 Soils and
Soil Mechanics - 804 Chemical Products Generally - 804.1 Organic Compounds
DOI:10.13227/j.hjkx.201701125
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 52>
Accession number:20174804454709
Title:Conversion Pathways of Substrates in Sulfate-Reducing Ammonia Oxidation System
Authors:Wanyan, De-Qing (1, 2); Huang, Yong (1, 2); Bi, Zhen (1, 2); Liu, Xin (1, 2);
Yao, Peng-Cheng (1, 2); Zhang, Wen-Jing (1, 2)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Institute of Environmental
Biotechnology, Suzhou University of Science and Technology, Suzhou; 215009, China
Corresponding author:Huang, Yong(yhuang_sz@sina.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3406-3414
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The phenomenon of simultaneous transformation of ammonium and sulfate under the
conditions of inoculating ANAMMOX culture has gotten the attention of researchers.
However, there are some problems and doubts reported in the related literature. In this
study, the characteristics of ammonium and sulfate synchronous transformation were
investigated in a CFSTR via inoculation with ANAMMOX culture. Under the condition of
oxygen removal and non-filling, in the unfilled sealed fermentation tank, the average
conversion of NH<inf>4</inf><sup>+</sup>-N was 50.8 mg·L<sup>-1</sup>while that of
sulfate-sulfur was 4.5 mg·L<sup>-1</sup>. Elemental analysis results showed that
the observed yellow solid was not elemental sulfur but rather iron-containing compounds.
However, no obvious change of ammonium was observed when using a filled sealed batch
reactor. Only sulfate transformed significantly, and the transformation rate was affected
by the inoculation biomass. Under these two conditions, the ORP in the reactor was
completely different. This is an indication that the synchronous transformation of
ammonium and sulfate observed in both our study and other related studies is probably not
a process mediated by ANAMMOX organisms, in which sulfate acted as the electron acceptor
to oxidize ammonium. Actually, ammonium and sulfate transformation were completely
independent: ammonium oxidation is due to the micro oxygen environment created by the
reactor operation form, whereas sulfate conversion is attributed to the sulfate
heterotrophic reduction that results from the organic matter release via microbial decay.
This transformation can clarify and explain the problems and doubts reported in the
related research.<br/> © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Sulfur compounds
Controlled terms:Ammonia - Batch reactors - Decay (organic) - Iron compounds - Nitrogen
removal - Oxidation - Oxygen - Sulfur - Wastewater treatment
Uncontrolled terms:Ammonia oxidation - Anaerobic ammonium oxidation - ANAMMOX - Micro-
oxygen - Simultaneous removal
Classification code:452.4 Industrial Wastes Treatment and Disposal - 802.1 Chemical
Plants and Equipment - 802.2 Chemical Reactions - 804 Chemical Products Generally -
804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 4.50e-03kg/m3, Mass_Density 5.08e-02kg/m3
DOI:10.13227/j.hjkx.201702030
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 53>
Accession number:20174804454407
Title:Effects of Traffic-related Air Pollution Exposure on DNA Methylation
Authors:Wang, Ting (1); Ding, Rui (1); Huang, Dan-Ni (1); Zhu, Zi-Yi (2); Zhang, Jun (3);
Ye, Huai-Zhuang (4); Xu, Ying-Chun (5); Jin, Yong-Tang (1)
Author affiliation:(1) Environmental Epigenetics Laboratory, Department of Environmental
Medicine, Zhejiang University, Hangzhou; 310058, China; (2) Department of Cardiothoracic
Surgery, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou; 310058, China; (3)
Department of Toxicology, School of Medicine, Zhejiang University, Hangzhou; 310058,
China; (4) Public Health Experimental Teaching Center, Zhejiang University, Hangzhou;
310058, China; (5) School of Pharmacology, Zhejiang University, Hangzhou; 310058, China
Corresponding author:Jin, Yong-Tang(jinedu@zju.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3529-3535
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The goal of the present study was to explore the effects of traffic-related air
pollution exposure on DNA methylation. Into five groups of 6, 30 healthy Wistar rats were
randomly divided. Three groups of rats were then exposed to traffic-related air pollution
at high (tunnel), moderate (crossroad), and low (control) pollution levels for 7 d,
whereas the two other groups were exposed in the tunnel for 14 d/28 d. The levels of
PM<inf>10</inf>and NO<inf>2</inf>were measured during the exposure. The study was
performed in spring and autumn, and lung tissue and blood were collected after the
exposure. Promoter methylation levels of p53, MGMT, and MAGE-A4 were quantified via
pyrosequencing. The levels of PM<inf>10</inf>and NO<inf>2</inf>in the crossroad and
tunnel groups were significantly higher than those in the control group. After 7 d
exposure in autumn, promoter methylation levels of p53 and MGMT in lung tissue
significantly decreased, and the methylation status continued to decrease with increasing
exposure time; MAGE-A4 was highly methylated and showed no difference among the three
groups. DNA methylation in lung tissue was more likely to be changed compared with that
in blood during 7 d exposure. As the exposure time increased, DNA methylation changes
between blood and lung tissue started to coincide. In lung tissue,
PM<inf>10</inf>exposure was significantly associated with decreased p53 promoter
methylation (r=-0.347, P=0.038) and NO<inf>2</inf>exposure was significantly associated
with decreased promoter methylation of p53, MGMT, and MAGE-A4(r=-0.482, -0.444, and-
0.346, respectively; P<0.05). In blood, PM<inf>10</inf>and NO<inf>2</inf>were
significantly and positively associated with MAGE-A4 promoter methylation (r=0.395 and
0.431, respectively; P<0.05). Traffic-related air pollution exposure may induce
promoter hypomethylation of p53 and MGMT.<br/> © 2017, Science Press. All right
reserved.
Number of references:42
Main heading:Air pollution control
Controlled terms:Air pollution - Alkylation - Biological organs - Blood - DNA -
Methylation - Nitrogen oxides - Pollution - Pollution control - Rats - Tissue
Uncontrolled terms:DNA Methylation - Exposure - Hypomethylation - MGMT - Pollution level
- Promoter methylation - Pyrosequencing - Traffic-related air pollution
Classification code:451 Air Pollution - 451.2 Air Pollution Control - 461.2 Biological
Materials and Tissue Engineering - 802.2 Chemical Reactions - 802.3 Chemical Operations
- 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201701083
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 54>
Accession number:20174804454701
Title:Selection of Microalgae for Biofuel Using Municipal Wastewater as a Resource
Authors:Han, Song-Fang (1); Jin, Wen-Biao (1); Tu, Ren-Jie (1); Chen, Hong-Yi (1)
Author affiliation:(1) School of Civil and Environmental Engineering, Harbin Institute of
Technology Shenzhen Graduate School, Shenzhen; 518055, China
Corresponding author:Jin, Wen-Biao(jinwb@hit.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:8
Issue date:August 15, 2017
Publication year:2017
Pages:3347-3353
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Cultivating microalgae using municipal wastewater can achieve not only treatment
of the wastewater but also recovery of algae for use as a biofuel energy source.
Wastewater provides necessary nutrients, such as nitrogen and phosphorus, and water for
microalgal growth. Because of the complexity of components of municipal wastewater,
variety of adaptability, and tolerance to wastewater of different microalgal species, it
is necessary to select a suitable microalgal species with high performance in lipid
production and identify proper pretreatment of the wastewater to achieve high lipid
production using municipal wastewater for algal biofuel production. Based on microalgal
growth, lipid production, and clean-up performance of wastewater, we selected Scenedesmus
obliquus wild strain and Chlorella pyrenoidosa mutant by ion beam implantation from a
test group for the biofuel production. Laboratory test results showed that S. obliquus
wild strain and C. pyrenoidosa mutant had respective lipid productions of 0.43
g·L<sup>-1</sup>and 0.33 g·L<sup>-1</sup>, with more C16-C18 fatty acids,
which were suitable for biodiesel production. The pollutant removals from the wastewater
by S. obliquus wild strain and C. pyrenoidosa mutant were COD, 86.4% vs. 81.8%;
NH<inf>4</inf><sup>+</sup>-N, 100.0% vs. 100.0%; TN, 94.3% vs. 94.9%; and TP, 93.4% vs.
94.2% respectively. The two different microalgal strains required different
pretreatments. After removal of large particles, the raw wastewater could be directly
used for the cultivation of S. obliquus wild strain. To grow C. pyrenoidosa mutant with
municipal wastewater, pretreatment procedures including precipitation followed by
filtration should be employed.<br/> © 2017, Science Press. All right reserved.
Number of references:24
Main heading:Wastewater treatment
Controlled terms:Algae - Biofuels - Cultivation - Fatty acids - Ion beams - Lipids -
Microorganisms - Precipitation (chemical)
Uncontrolled terms:Chlorella pyrenoidosa - Ion beam implantation - Micro-algae -
Municipal wastewaters - Nitrogen and phosphorus - Pre-Treatment - Pretreatment procedure
- Scenedesmus obliquus
Classification code:452.4 Industrial Wastes Treatment and Disposal - 461.9 Biology -
802.3 Chemical Operations - 804.1 Organic Compounds - 821.3 Agricultural Methods -
932.1 High Energy Physics
Numerical data indexing:Mass_Density 3.30e-01kg/m3, Mass_Density 4.30e-01kg/m3,
Percentage 9.42e+01%
DOI:10.13227/j.hjkx.201701109
<RECORD 1>
Accession number:20175004525229
Title:Effects of Organic Carbon Content on the Residue and Migration of Polycyclic
Aromatic Hydrocarbons in Soil Profiles
Authors:Fei, Jia-Jia (1, 2); Zhang, Zhi-Huan (1, 2); Wan, Tian-Tian (1, 2); He, Feng-Peng
(1, 2)
Author affiliation:(1) College of Geosciences, China University of Petroleum, Beijing;
102249, China; (2) State Key Laboratory of Petroleum Resources and Prospecting, Beijing;
102249, China
Corresponding author:Zhang, Zhi-Huan(zhangzh3996@vip.163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3871-3881
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The effects of total organic carbon content (TOC) on the migration of polycyclic
aromatic hydrocarbons (PAHs) in the soil were investigated. This study analyzed the
vertical properties of the concentrations and distributions of PAHs and TOC at various
soil profiles from functionally different environmental regions including nature
reserves, ploughs, orchards, farmlands, metropolitan areas, and industrial parks. The
vertical migration properties of PAHs in soils were examined by conducting leaching
experiments in soil columns. The concentrations of PAHs varied from region to region and
showed strong, positive correlations with TOC in the same region. Furthermore, based on
the leaching experiments, the transport abilities of PAHs were significantly influenced
by TOC, although they could all be transported to the deep layers by TOC in soil columns.
The downward migration of PAHs decreased with the increase in TOC and vice versa. The
properties of the composition and structure of PAHs also had an obvious influence on
their residues and migration in soil profiles at the same TOC conditions. In addition,
the transport of PAHs was related to the amount of leaching water, the leaching time, and
the additional PAHs.<br/> © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Polycyclic aromatic hydrocarbons
Controlled terms:Aromatic compounds - Aromatic hydrocarbons - Carbon - Farms -
Hydrocarbons - Leaching - Organic carbon - Soil surveys - Soils
Uncontrolled terms:Beijing area - Leaching experiments - Migration - Organic carbon
contents - Polycyclic aromatic hydrocarbons (PAHS) - Positive correlations - Soil column
- Total organic carbon content
Classification code:483.1 Soils and Soil Mechanics - 802.3 Chemical Operations - 804
Chemical Products Generally - 804.1 Organic Compounds - 821 Agricultural Equipment and
Methods; Vegetation and Pest Control
DOI:10.13227/j.hjkx.201612264
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 2>
Accession number:20175004525191
Title:Emission Characteristics of Vehicles from National Roads and Provincial Roads in
China
Authors:Wang, Ren-Jie (1); Wang, Kun (2); Zhang, Fan (1, 3); Gao, Jia-Jia (2); Li, Yue
(1); Yue, Tao (2)
Author affiliation:(1) Transport Planning and Research Institute Beijing, Beijing;
100028, China; (2) Beijing Municipal Institute of Labour Protection, Beijing; 100054,
China; (3) College of Environmental and Energy Engineering, Beijing University of
Technology, Beijing; 100124, China
Corresponding author:Gao, Jia-Jia(jiajia11757@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3553-3560
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In recent years, with the rapid increase in automobile volume, vehicle emissions
have become one of the major emission sources of urban air pollution in China. In China,
most of the national and provincial roads have been the channels that connect different
cities. Up until 2015, the length of national and provincial roads have reached
1.85×10<sup>5</sup>km and 3.29×10<sup>5</sup>km, respectively, accounting for
13% of the mileage of all classified highways. Therefore, active research on vehicle
emissions from national and provincial roads between cities in China is of great
significance. Few studies have been conducted on air pollutant emissions from intercity
vehicles. In this study, emission characteristics of intercity vehicles were investigated
based on traffic monitoring data and the “calculation guide of air pollutant
emission for road vehicles”. The results showed that the CO, NO<inf>x</inf>, PM,
and HC emissions accounted for 4.5%, 27.9%, 14.4%, and 7.7% of national vehicle
emissions, respectively. There were significant differences in emission contributions
among different types of intercity vehicles. Heavy trucks were major contributors to
NO<inf>x</inf>, PM<inf>10</inf>, and PM<inf>2.5</inf>emissions and motorcycles
contributed most to CO and HC. Furthermore, there were significant differences in
emission contributions of vehicle types on different road types; the major contributor of
CO and HC emissions was small passenger cars on expressways. Motorcycles were the main
contributors to CO and HC emissions on ordinary roads.<br/> © 2017, Science Press.
All right reserved.
Number of references:18
Main heading:Air pollution
Controlled terms:Automobiles - Monitoring - Motorcycles - Nitrogen oxides - Particles
(particulate matter) - Pollution - Roads and streets - Transportation - Vehicles
Uncontrolled terms:Air pollutant emission - Emission characteristics - Emission sources -
Road types - Traffic monitoring - Urban air pollution - Vehicle emission - Vehicle types
Classification code:406.2 Roads and Streets - 451 Air Pollution - 662.1 Automobiles -
662.2 Smaller Vehicles - 804.2 Inorganic Compounds - 951 Materials Science
Numerical data indexing:Percentage 1.30e+01%, Percentage 1.44e+01%, Percentage 2.79e+01%,
Percentage 4.50e+00%, Percentage 7.70e+00%
DOI:10.13227/j.hjkx.201701087
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 3>
Accession number:20175004525214
Title:Preparation and Pb<sup>2+</sup>Electrosorption Characteristics of Graphene
Hydrogels Electrode
Authors:Wang, Yao (1, 2); Ji, Qing-Hua (2); Li, Yong-Feng (1); Hu, Cheng-Zhi (2)
Author affiliation:(1) School of Forestry, Northeast Forestry University, Harbin; 150040,
China; (2) Key Laboratory of Drinking Water Science and Technology, Research Center for
Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085, China
Corresponding author:Hu, Cheng-Zhi(czhu@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3747-3754
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Electrosorption has the advantage of high adsorption capacity and electrode
regeneration in the removal of heavy metal ions in water. In this study, graphene
hydrogels (GS) were prepared by hydrothermal reduction of graphene oxide (GO) suspensions
and the electrode was obtained via compression of GS. Various electrochemical properties
of GS were tested. The kinetics and thermodynamics of the electrosorption of
Pb<sup>2+</sup>on GS electrode and GS electrode reusability were investigated. The
results showed excellent capacitive behavior (200.4 F·g<sup>-1</sup>at 1
A·g<sup>-1</sup>) of GS. The electrosorption performance of GS indicated that high
voltage was favored for the removal of Pb<sup>2+</sup>and the highest removal efficiency
reached 96.4% when the voltage value was -1.2 V. The electrosorption capacity for
Pb<sup>2+</sup>removal was found to be 461.20 mg·g<sup>-1</sup>, which was twice
as high as the saturated adsorption capacity of GS. The GS electrode could regenerate
after electrosorption when the voltage value was+1.2 V and the removal efficiency of
Pb<sup>2+</sup>was still maintained above 95% after electrosorption-desorption for 15
cycles.<br/> © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Electrochemical electrodes
Controlled terms:Capacitance - Chemicals removal (water treatment) - Efficiency -
Electrodes - Graphene - Heavy metals - Hydrogels - Lead - Metal ions - Metals -
Reusability - Thermodynamics
Uncontrolled terms:Electrochemical capacitance - Electrosorption - Graphene hydrogels -
High adsorption capacity - Hydrothermal reduction - Kinetics and thermodynamics - Removal
of heavy metal ions - Saturated adsorption capacity
Classification code:531 Metallurgy and Metallography - 531.1 Metallurgy - 546.1 Lead
and Alloys - 641.1 Thermodynamics - 701.1 Electricity: Basic Concepts and Phenomena -
761 Nanotechnology - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical
Products Generally - 913.1 Production Engineering
Numerical data indexing:Percentage 9.50e+01%, Percentage 9.64e+01%, Voltage -1.20e+00V
DOI:10.13227/j.hjkx.201703145
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 4>
Accession number:20175004525198
Title:Analysis of Anthropogenic Reactive Nitrogen Emissions and Its Features on a
Prefecture-level City in Fujian Province
Authors:Zhang, Qian-Hu (1, 2, 3); Gao, Bing (1, 3); Huang, Wei (1, 3); Yan, Xiao-Mei (1,
2, 3); Cui, Sheng-Hui (1, 3)
Author affiliation:(1) Key Laboratory of Urban Environment and Health, Institute of Urban
Environment, Chinese Academy of Sciences, Xiamen; 361021, China; (2) College of Resources
and Environment, University of Chinese Academy of Sciences, Beijing; 100049, China; (3)
Key Laboratory of Urban Metabolism, Xiamen; 361021, China
Corresponding author:Cui, Sheng-Hui(shcui@iue.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3610-3619
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The impacts of reactive nitrogen (Nr) on the environment significantly increase
with population and rapid urbanization. In order to study gaseous Nr and Nr loads to
waterbodies at the provincial scale, we established anthropogenic emission inventories in
prefecture-level cities in Fujian Province and analyzed the changes in Nr emissions for
the years 2000, 2005, and 2010. The total Nr emissions were calculated as 538.4, 587.0,
and 620.0 Gg in those three years, respectively. The emissions of Nr increased in nine
prefecture-level cities except in Zhangzhou. Among these nine cities, Putian is the
fastest growing one. The largest emitters were Zhangzhou and Quanzhou, while Ningde and
Xiamen were the smallest ones. Agricultural ecosystems and livestock were the main
sources of Nr emissions, both of them accounting for more than 90% of total anthropogenic
Nr emissions. Despite rapid growth, energy activities had a minor contribution to total
Nr emissions. The per area Nr emissions of each prefecture-level city were highest in
Xiamen in the southeast coastal area and lowest in Sanming located in the northwest
inland region in 2010. However, the patterns of GDP, population, and emission intensities
showed the opposite trends to per area Nr emissions, lowest in Xiamen and highest in
Nanping. We further discussed the significance of Nr emissions reductions in different
areas based on the analysis of the characteristics of Nr emission sources in prefecture-
level cities. The results provide a scientific basis for reducing Nr emissions in Fujian
Province and its prefecture-level cities.<br/> © 2017, Science Press. All right
reserved.
Number of references:37
Main heading:Nitrogen
Controlled terms:Agriculture - Ecosystems
Uncontrolled terms:Agricultural ecosystems - Anthropogenic emissions - Distribution
patterns - Emission intensity - Emissions reduction - Fujian Province - Mitigation and
regulation - Rapid urbanizations
Classification code:454.3 Ecology and Ecosystems - 804 Chemical Products Generally -
821 Agricultural Equipment and Methods; Vegetation and Pest Control
Numerical data indexing:Percentage 9.00e+01%
DOI:10.13227/j.hjkx.201702182
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 5>
Accession number:20175004525230
Title:Major Factors Influencing the Cd Content and Seasonal Dynamics in Different Land
Cover Soils in a Typical Acid Rain Region
Authors:Liu, Xiao-Li (1); Zeng, Zhao-Xia (2); Tie, Bai-Qing (1); Ye, Chang-Cheng (1);
Zhou, Jun-Chi (1); Lei, Ming (1)
Author affiliation:(1) College of Resources & Environment, Hunan Agricultural
University, Changsha; 410128, China; (2) Key Laboratory of Agro-ecology Processes in
Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences,
Changsha; 410125, China
Corresponding author:Zeng, Zhao-Xia(elizeberth@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3882-3887
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Understanding the seasonal variations in active heavy metal components and
sensitive impact factors is of importance for the ecological risk reduction during the
agricultural production processes. Paddy fields, vegetable lands, and hilly forests were
selected as three main land cover types to assess the seasonal characteristics of Cd
bioavailability and reveal how or to what extent it was affected by the physiochemical
parameters of soils, under different land-use types in a typical Cd-contaminated
watershed in the middle and lower reaches of Xiangjiang River. One-year in situ
monitoring results showed that natural rainfall pH in winter and spring was lower than in
summer and autumn in the study region. The total Cd content of paddy soils was
significantly higher than that of the vegetable soil, while the hilly forest soil showed
the lowest total Cd value. Similar seasonal variations in total Cd content were found in
three soil types with slightly lower summer and autumn concentrations than spring and
winter values, but no obvious correlation was detected between the total and the
available Cd components. The paddy soil available Cd concentration during the 5-9-month
crop growth season was significantly lower than the other months of the year, while
vegetable cultivation and hilly forest soils showed the opposite trend. E<inf>h</inf>was
the key factor that had a positive influence on the Cd activity in paddy soil. Soil TOC
concentration was negatively correlated with soil activity in vegetable soil. TOC, water
soluble organic carbon, showed a significant positive correlation with Cd effectiveness.
The results provide scientific references for Cd contamination control and safe
agricultural production.<br/> © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Soil pollution
Controlled terms:Acid rain - Agriculture - Biochemistry - Cadmium - Carbon - Cultivation
- Forestry - Heavy metals - Land use - Organic carbon - Rain - Soils - Vegetables
Uncontrolled terms:Agricultural productions - Available Cd - Different land use types -
Key influencing factors - Physiochemical parameters - Seasonal characteristics - Seasonal
variation - Water-soluble organic carbon
Classification code:403 Urban and Regional Planning and Development - 443.3
Precipitation - 451.1 Air Pollution Sources - 483.1 Soils and Soil Mechanics - 531
Metallurgy and Metallography - 549.3 Nonferrous Metals and Alloys excluding Alkali and
Alkaline Earth Metals - 801.2 Biochemistry - 804 Chemical Products Generally - 804.1
Organic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
Numerical data indexing:Age 4.17e-01yr to 7.50e-01yr
DOI:10.13227/j.hjkx.201612260
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 6>
Accession number:20175004525224
Title:Abundance of Cell-associated and Cell-free Antibiotic Resistance Genes in Two
Wastewater Treatment Systems
Authors:Zhang, Yan (1); Chen, Lü-Jun (2, 3); Xie, Hui (2); Li, Ao-Lin (2); Dai,
Tian-Jiao (4)
Author affiliation:(1) School of Environmental and Civil Engineering, Jiangnan
University, Wuxi; 214122, China; (2) School of Environment, Tsinghua University, Beijing;
100084, China; (3) Zhejiang Provincial Key Laboratory of Water Science and Technology,
Department of Environmental Technology and Ecology, Yangtze Delta Region Institute of
Tsinghua University, Jiaxing; Zhejiang; 314050, China; (4) College of Environmental
Sciences and Engineering, Peking University, Beijing; 100871, China
Corresponding author:Chen, Lü-Jun(chenlj@tsinghua.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3823-3830
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:For revealing the characteristics of antibiotic resistance genes (ARGs) in
wastewater treatment systems, real-time PCR was adopted to investigate the variation of
abundances of cell-associated ARGs and cell-free ARGs, in a municipal wastewater
treatment system (M for short) and a coking wastewater treatment system (C for short). In
system M, the absolute abundances of the cell-associated ARGs, sulII, tetC, blaPSE-1, and
ermB, were much higher than those of the cell-free fractions in the influent. The
biological treatment process did not enrich antibiotic resistance bacteria (ARBs) and
membrane filtration of the MBR effectively reduced both cell-associated and cell-free DNA
in water. The total ARGs removal was 2.54-4.95 logs. In system C, the biological
treatment process enriched the sulII-carried ARBs; however, the relative and absolute
abundances of cell-free sulII were decreased. The succeeding process, coagulation-sand
filtration, decreased the absolute abundance of cell-associated sulII, but increased the
absolute abundance of cell-free sulII in water. The proportion of cell-free sulII in
total sulII gene increased from 0.05% in the biological treatment effluent to 1.33% in
the sand filtration effluent and further increased to 9.31% after the effluent was kept
at 25℃ and at dark for five days. The ratio of cell-free ARGs to total ARGs
increased with deep removal of ARBs and lysis of residual cells. The risk of ARG
proliferation by cell-free DNA in the effluent needs further evaluation.<br/> ©
2017, Science Press. All right reserved.
Number of references:25
Main heading:Wastewater treatment
Controlled terms:Antibiotics - Biochemical engineering - Cells - Chemical water treatment
- Cytology - DNA - Effluent treatment - Effluents - Filtration - Genes - Microfiltration
- Polymerase chain reaction - Real time systems - Reclamation - Water filtration
Uncontrolled terms:Antibiotic resistance bacteria - Antibiotic resistance genes -
Biological treatment process - Cell-free - Coking wastewater treatments - Municipal
wastewater treatment - Real-time PCR - Wastewater treatment system
Classification code:452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and
Disposal - 461.2 Biological Materials and Tissue Engineering - 461.6 Medicine and
Pharmacology - 722.4 Digital Computers and Systems - 801.2 Biochemistry - 802.3
Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 805.1.1
Biochemical Engineering
Numerical data indexing:Percentage 1.33e+00%, Percentage 5.00e-02%, Percentage 9.31e+00%
DOI:10.13227/j.hjkx.201612257
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 7>
Accession number:20175004525237
Title:Adsorption Characteristics of Biochar on Heavy Metals (Pb and Zn) in Soil
Authors:Wang, Hong (1); Xia, Wen (1); Lu, Ping (1); Bu, Yu-Wei (1); Yang, Hao (1)
Author affiliation:(1) Jiangsu Provincial Key Laboratory of Materials Cycling and
Pollution Control, School of Energy and Mechanical Engineering, Nanjing Normal
University, Nanjing; 210042, China
Corresponding author:Lu, Ping(luping@njnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3944-3952
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Three types of biochars, poplar branch biochar (PBC), water hyacinth biochar
(WHC), and corn straw biochar (CSC), were prepared in a fixed-bed pyrolyzer at different
pyrolysis temperatures (300-700℃). The effects of biochar species, pyrolysis
temperature, and biochar addition on adsorption characteristics of typical heavy metals
(HMs) such as Pb and Zn in vegetable soil (collected from a lead-zinc-silver mining area,
Nanjing, China) were investigated. The adsorption mechanism of biochar on HMs was
discussed based on the analyses of pore structure, XRD, and FTIR of biochars. WHC biochar
showed the best adsorption ability at the same experimental conditions with adsorption
efficiencies on Zn and Pb of 21.83% and 44.57%, respectively. The relative adsorption
capacities of Zn and Pb were 227.65 μg·g<sup>-1</sup>and 363.76
μg·g<sup>-1</sup>at the pyrolysis temperature of 500℃ and biochar
addition of 5%. The adsorption efficiency of biochar on HMs in soil increased gradually
with increasing pyrolysis temperature. WHC biochars prepared at 500℃ and 700℃
had similar adsorption capacities on Zn and Pb in soil indicating that the moderate
pyrolysis may be a good choice for WHC with better physicochemical properties. Increasing
the amount of WHC addition benefits the adsorption efficiency of HMs in soil, but does
not increase the adsorption capacity. The adsorption efficiency of Pb in soil reaches
93.93% by adding 10% of WHC into the soil sample. The combined analyses based on the
physicochemical properties of biochar and the results of soil HMs adsorption experiments
suggest that ion exchange and complexation are prevailing mechanisms of the remediation
of HM-contaminated soil by WHC biochars.<br/> © 2017, Science Press. All right
reserved.
Number of references:31
Main heading:Adsorption
Controlled terms:Efficiency - Heavy metals - Ion exchange - Lead - Pyrolysis -
Remediation - Soil pollution - Soils - Thallium compounds - Zinc
Uncontrolled terms:Adsorption capacities - Adsorption characteristic - Adsorption
efficiency - Adsorption experiment - Bio chars - Experimental conditions -
Physicochemical property - Pyrolysis temperature
Classification code:454.2 Environmental Impact and Protection - 483.1 Soils and Soil
Mechanics - 531 Metallurgy and Metallography - 546.1 Lead and Alloys - 546.3 Zinc and
Alloys - 802.2 Chemical Reactions - 802.3 Chemical Operations - 913.1 Production
Engineering
Numerical data indexing:Percentage 1.00e+01%, Percentage 2.18e+01%, Percentage 4.46e+01%,
Percentage 5.00e+00%, Percentage 9.39e+01%
DOI:10.13227/j.hjkx.201701171
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 8>
Accession number:20175004525223
Title:Rapid Culture, Microbial Community Structure, and Diversity of High-Efficiency
Denitrifying Bacteria
Authors:Meng, Ting (1); Yang, Hong (1)
Author affiliation:(1) Key Laboratory of Beijing for Water Quality Science and Water
Environmental Recovery Engineering, College of Architectural Engineering, Beijing
University of Technology, Beijing; 100124, China
Corresponding author:Yang, Hong(yhong@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3816-3822
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:High-efficiency denitrifying bacteria can improve wastewater treatment
efficiency. In order to rapidly culture high-efficiency denitrifying bacteria, batch
trials were conducted at different carbon sources (No. 1 and No. 2 fermented liquid) and
NO<inf>3</inf><sup>-</sup>-N concentration gradients (30 mg·L<sup>-1</sup>-150
mg·L<sup>-1</sup>-300 mg·L<sup>-1</sup>). The results showed that No. 2
fermented liquid could finish high-efficiency denitrifying bacteria [300 mg·
(L·h)<sup>-1</sup>] cultivation in 11 d, which is 17 d before No.1 fermented
liquid could. At the same time, high-efficiency denitrifying bacteria could effectively
remove ammonia-nitrogen and total phosphorus, and maximum removal rates were 34.43
mg·(L·h)<sup>-1</sup>and 2.98 mg·(L·h)<sup>-1</sup>,
respectively. Furthermore, high-throughput sequencing was employed to characterize and
compare the community structure and diversity. The species abundance and diversity were
reduced but the category and proportion of denitrifying bacteria were increased. In
addition, bacteria composition and quantity changed after cultivation and Thauera and
Pseudomonas were the dominant contributors to the effective removal of nitrate in the
SBR(sequencing batch reactor). Denitrifying phosphorus accumulating bacteria
(Rhodocyclaceae and Pseudomonadaceae) and heterotrophic nitrifying bacteria (Pseudomonas,
Alcaligenes, Bacillus, and Comamonas) proved the capacity of the system to remove
ammonia-nitrogen and total phosphorus.<br/> © 2017, Science Press. All right
reserved.
Number of references:27
Main heading:Bacteria
Controlled terms:Ammonia - Bacteriology - Batch reactors - Biodiversity - Carbon -
Denitrification - Efficiency - Liquids - Microorganisms - Nitrification - Nitrogen -
Nitrogen removal - Phosphorus - Social sciences - Wastewater treatment
Uncontrolled terms:Concentration gradients - Denitrifying bacteria - Different carbon
sources - High-throughput sequencing - Microbial community structures - Phosphorus
accumulating - Sequencing batch reactors - Wastewater treatment efficiencies
Classification code:452.4 Industrial Wastes Treatment and Disposal - 454 Environmental
Engineering - 461.9 Biology - 802.1 Chemical Plants and Equipment - 802.2 Chemical
Reactions - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 913.1
Production Engineering - 971 Social Sciences
DOI:10.13227/j.hjkx.201701159
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 9>
Accession number:20175004525209
Title:Composition, Evolution, and Complexation of Dissolved Organic Matter with Heavy
Metals in Landfills
Authors:Xiao, Xiao (1, 2); He, Xiao-Song (1, 2); Xi, Bei-Dou (1, 2); Gao, Ru-Tai (1, 2);
Li, Dan (1, 2); Zhang, Hui (1, 2); Cui, Dong-Yu (1, 2); Yuan, Zhi-Ye (3)
Author affiliation:(1) State Key Laboratory of Environmental Criteria and Risk
Assessment, Chinese Research Academy of Environmental Sciences, Beijing; 100012, China;
(2) State Environmental Protection Key Laboratory of Simulation and Control of
Groundwater Pollution, Chinese Research Academy of Environmental Science, Beijing;
100012, China; (3) Beijing Zhengshi Environmental Engineering Co., Ltd., Beijing; 100076,
China
Corresponding author:He, Xiao-Song(hexs82@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3705-3712
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Samples of wastes and leachates were collected from a landfill site and a
leachate treatment plant [i.e., equalization basin, anaerobic zone, oxidation ditch, and
membrane bioreactor (MBR) section]. Dissolved organic matter (DOM) was extracted from the
wastes and leachates, and its composition, evolution, and complexation characteristics
with heavy metals were studied using UV-Visible and fluorescence spectroscopy combined
with<sup>1</sup>H nuclear magnetic resonance. The aliphatic compounds were found to be
the main substances in DOM in the fresh landfill wastes (<5 a), and the relative
content of aromatics and substituent groups, i.e., carbonyl, hydroxyl, and carboxyl
functional groups, decreased during the initial process. On the other hand, carbohydrates
and organic amines were observed to be the main substances in DOM obtained from the
intermediate and old landfill wastes (>5 a), and the relative content of aromatics and
substituent groups (carbonyl, hydroxyl, and carboxyl functional groups) increased
persistently during the process of organic matter humification. The aliphatics,
carbohydrates, and organic amines all existed in DOM from the equalization basin
Carbohydrates and aromatic compounds increased rapidly after the anaerobic, aerobiotic,
and membrane treatment. However, low molecular weight organic matter and alkyl chain
substances decreased during the leachate treatment process and the side chain of the
aliphatics was shortened despite the increase in its content. The distribution of zinc in
the wastes and leachates was influenced by the complexation with the nitrogen-and
oxygen-containing functional groups, whose effect on other metals was not obvious.<br/>
© 2017, Science Press. All right reserved.
Number of references:44
Main heading:Leachate treatment
Controlled terms:Activated sludge process - Amines - Aromatization - Atmospheric spectra
- Biogeochemistry - Biological materials - Bioreactors - Carbohydrates - Carbonyl
compounds - Dissolution - Equalizers - Fluorescence spectroscopy - Heavy metals - Land
fill - Municipal solid waste - Nuclear magnetic resonance spectroscopy - Organic
compounds - Sewage lagoons - Sewage treatment plants - Wastes
Uncontrolled terms:Dissolved organic matters - Leachate treatment plant - Leachates - Low
molecular weight - Membrane bio reactor (MBR) - Membrane treatments - Municipal solid
waste landfills - Oxygen-containing functional groups
Classification code:443.1 Atmospheric Properties - 452 Municipal and Industrial Wastes;
Waste Treatment and Disposal - 452.2 Sewage Treatment - 461.2 Biological Materials and
Tissue Engineering - 461.8 Biotechnology - 481.2 Geochemistry - 531 Metallurgy and
Metallography - 713.5 Electronic Circuits Other Than Amplifiers, Oscillators,
Modulators, Limiters, Discriminators or Mixers - 741.3 Optical Devices and Systems - 802
Chemical Apparatus and Plants; Unit Operations; Unit Processes - 804.1 Organic
Compounds
DOI:10.13227/j.hjkx.201703141
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 10>
Accession number:20175004525218
Title:Effects of Influent C/N Ratios on Denitrifying Phosphorus Removal Performance Based
on ABR-MBR Combined Process
Authors:Wu, Peng (1, 2); Cheng, Chao-Yang (1, 2); Shen, Yao-Liang (1, 2, 3); Zhao, Shi-
Hui (1, 2); Lü, Liang (1, 2)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Jiangsu Collaborative Innovation
Center of Water Treatment Technology and Material, Suzhou; 215009, China; (3) Key
Laboratory of Environmental Science and Engineering of Jiangsu Province, Suzhou; 215009,
China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3781-3786
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:An ABR-MBR integrated reactor based on a combination of the anaerobic baffled
reactor (ABR) with the microbial phase separation and membrane bioreactor (MBR) with
high-effect entrapment was constructed and the circulation and interactivity of the
combined process were examined by adding nitrate recycling and sludge reflux. By
increasing the influent COD to adjust the COD/TN ratio, the influence of the mechanism on
the denitrifying phosphorus removal performance under the condition of continuous-flow
was investigated. The results showed that the average effluent concentration of soluble
phosphorus under different influent C/N conditions were 0.22, 0.34, 0.39, 0.42, and 2.45
mg·L<sup>-1</sup>and the low influent C/N ratio was beneficial to phosphate
removal. When the influent C/N was 4.8-6.0, the average removal rates of COD, TN, and
soluble PO<inf>4</inf><sup>3-</sup>-P were more than 87%, 76%, and 93%. In addition, when
the influent C/N ratio was 3.6-6.0, the removal of TN was proportional to the anoxic
phosphorus uptake of ABR and conducive to the removal of TN after increasing the influent
COD concentration. Higher C/N ratios of the influent improved the removal of TN at this
stage. Finally, the C/N ratio of 6 was suggested to achieve the simultaneous removal of
nitrogen and phosphorus.<br/> © 2017, Science Press. All right reserved.
Number of references:22
Main heading:Nitrogen removal
Controlled terms:Bioreactors - Denitrification - Phase separation - Phosphorus
Uncontrolled terms:Anaerobic baffled reactor - Anoxic phosphorus uptake - C/N ratio -
Denitrifying phosphorus removal - Effluent concentrations - Impact factor - Membrane bio
reactor (MBR) - Nitrogen and phosphorus
Classification code:802 Chemical Apparatus and Plants; Unit Operations; Unit Processes -
804 Chemical Products Generally
Numerical data indexing:Mass_Density 2.45e-03kg/m3, Percentage 7.60e+01%, Percentage
8.70e+01%, Percentage 9.30e+01%
DOI:10.13227/j.hjkx.201703079
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 11>
Accession number:20175004525197
Title:Observations of Reactive Nitrogen and Sulfur Compounds During Haze Episodes Using a
Denuder-based System
Authors:Tian, Shi-Li (1); Liu, Xue-Jun (2); Pan, Yue-Peng (1); Zhou, Yan-Bo (1); Xu, Wen
(3); Wang, Yue-Si (1)
Author affiliation:(1) State Key Laboratory of Atmospheric Boundary Layer Physics and
Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences,
Beijing; 100029, China; (2) College of Resources and Environmental Sciences, China
Agricultural University, Beijing; 100193, China; (3) State Key Laboratory of Urban and
Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of
Sciences, Beijing; 100085, China
Corresponding author:Pan, Yue-Peng(pyp@dq.cern.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3605-3609
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Reactive nitrogen and sulfur compounds are chemically active in the atmosphere
and play an important role in secondary particle formation. Among them, sulfate, nitrate,
and ammonium (SNA) are important components of particulate matter (PM) that account for
approximately one-third of fine particles. The precursors of SNA including
HNO<inf>3</inf>, SO<inf>2</inf>, and NH<inf>3</inf>are all involved in haze formation in
China. To date, the concurrent measurements of SNA and their precursors have been limited
to single sites and short terms because of the high cost of the instruments. This study
aimed to use DELTA (Denuder for Long-Term Atmospheric sampling) to characterize the daily
concentrations of reactive nitrogen and sulfur species during haze episodes. The results
showed that the background interface of NH<inf>4</inf><sup>+</sup>, NO<inf>3</inf><sup>-
</sup>, and SO<inf>4</inf><sup>2-</sup>in the denuder was minor and could be used to
determine 24-48 h concentrations of NH<inf>3</inf>, HNO<inf>3</inf>, SO<inf>2</inf>,
NH<inf>4</inf><sup>+</sup>, and NO<inf>3</inf><sup>-</sup>. However, the
SO<inf>4</inf><sup>2-</sup>concentrations in the blank filter was so high that they could
only be used for sampling weekly or for longer periods of time. During the campaign
between May 9 and June 7, 2016 in urban Beijing, the concentrations of NH<inf>3</inf>,
HNO<inf>3</inf>, NH<inf>4</inf><sup>+</sup>, and NO<inf>3</inf><sup>-</sup>showed
distinct daily variations at different wind directions, i.e., higher values were observed
during southerly winds and lower values during northerly winds. The time series of these
reactive nitrogen compounds coincided with that of PM<inf>2.5</inf>, CO, SO<inf>2</inf>,
and NO<inf>2</inf>, indicating the combustion of fossil fuels. The mean concentrations of
NH<inf>3</inf>, HNO<inf>3</inf>, NH<inf>4</inf><sup>+</sup>, and NO<inf>3</inf><sup>-
</sup>were twice the concentrations during clean days, further highlighting the effect of
local emissions on the urban environment. The ratios of
HNO<inf>3</inf>/NO<inf>3</inf><sup>-</sup>and NH<inf>3</inf>/NH<inf>4</inf><sup>
+</sup>were 1.2 and 4.5, respectively, without significant differences between hazy and
clean days. The findings demonstrated that both the reduced and oxidized nitrogen were
preferred in gaseous phase rather than particulate phase due to relatively high
temperatures during the transition season of spring/summer.<br/> © 2017, Science
Press. All right reserved.
Number of references:22
Main heading:Particles (particulate matter)
Controlled terms:Fog - Fossil fuels - Nitrogen - Nitrogen compounds - Pollution - Sulfur
- Sulfur compounds - Sulfur determination
Uncontrolled terms:Gaseous pollutants - Haze pollutions - Mean concentrations - Oxidized
nitrogen - Particulate Matter - Reactive nitrogen - Secondary particles - Urban
environments
Classification code:443.1 Atmospheric Properties - 801 Chemistry - 804 Chemical
Products Generally - 951 Materials Science
Numerical data indexing:Time 8.64e+04s to 1.73e+05s
DOI:10.13227/j.hjkx.201701177
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 12>
Accession number:20175004525225
Title:Effect of Biochar on CH<inf>4</inf>and N<inf>2</inf>O Emissions from Lou Soil
Authors:Zhou, Feng (1); Xu, Chen-Yang (1); Wang, Yue-Ling (1); Lin, Yun (1); Wang, Qiang
(1); Zhang, Tong-Tong (1); Geng, Zeng-Chao (1)
Author affiliation:(1) Key Laboratory of Plant Nutrition and Agrienvironment in Northwest
China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest
A&F University, Yangling; 712100, China
Corresponding author:Geng, Zeng-Chao(gengzengchao@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3831-3839
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to investigate the effect of biochar on CH<inf>4</inf>and
N<inf>2</inf>O emissions from Lou soil, field plot experiments of winter wheat were
conducted with five levels of biochar addition (0, 20, 40, 60, and 80 t·hm<sup>-
2</sup>). The fluxes of CH<inf>4</inf>and N<inf>2</inf>O, wheat production, soil organic
carbon, soil water content, and temperature of each soil layer were measured. The results
showed that the fluxes of CH<inf>4</inf>and N<inf>2</inf>O changed significantly in
different growth periods of winter wheat. Compared with the control, the cumulative
CH<inf>4</inf>uptake under the biochar amendment increased by 12.88%-71.61%. When the
biochar addition was ≥40 t·hm<sup>-2</sup>, the cumulative CH<inf>4</inf>uptake
was significantly higher and the highest uptake was at the level of 40 t·hm<sup>-
2</sup>. Biochar amendment had no significant effect on cumulative N<inf>2</inf>O
emissions and the global warming potential (GDP). The greenhouse gas intensity (GHGI)
decreased by 13.24%-22.14%. The wheat yield increased by 1.72%-32.19% after biochar
addition. When the applied biochar level was ≥40 t·hm<sup>-2</sup>, the wheat
yield increments were significantly higher. The biochar addition of 40 t·hm<sup>-
2</sup>was the optimal level for increasing the wheat yield. The soil organic carbon and
water content under biochar amendment increased by 1.42-2.69 times and 7.08%-11.96%,
respectively. The results suggested that Lou soil was the sink of atmospheric
CH<inf>4</inf>and the emission source of N<inf>2</inf>O during the winter wheat growth
period, and the biochar level of 40 t·hm<sup>-2</sup>was the optimal addition
amount.<br/> © 2017, Science Press. All right reserved.
Number of references:42
Main heading:Soils
Controlled terms:Crops - Global warming - Greenhouse gases - Organic carbon - Soil
moisture
Uncontrolled terms:Bio chars - Biochar amendments - CH4 uptake - Emission sources -
Global warming potential - Soil organic carbon - Soil water content - Wheat production
Classification code:443.1 Atmospheric Properties - 451.1 Air Pollution Sources - 483.1
Soils and Soil Mechanics - 804.1 Organic Compounds - 821.4 Agricultural Products
Numerical data indexing:Percentage 1.29e+01% to 7.16e+01%, Percentage 1.32e+01% to 2.21e
+01%, Percentage 1.72e+00% to 3.22e+01%, Percentage 7.08e+00% to 1.20e+01%
DOI:10.13227/j.hjkx.201612210
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 13>
Accession number:20175004525193
Title:Characteristics of Particulate Matter and Carbonaceous Species in Ambient Air at
Different Air Quality Levels
Authors:Fang, Xiao-Zhen (1); Wu, Lin (1); Zhang, Jing (1); Li, Huai-Rui (2); Mao, Hong-
Jun (1); Song, Cong-Bo (1)
Author affiliation:(1) Centre for Urban Transport Emission Research, College of
Environmental Science and Engineering, Nankai University, Tianjin; 300071, China; (2)
Langfang Haihong Environmental Protection S&T Co., Ltd., Langfang; 065000, China
Corresponding author:Mao, Hong-Jun(hongjun_mao@hotmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3569-3574
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study describes the characteristics of particulate matter and carbonaceous
species at different air quality levels. The concentrations of PM<inf>10</inf>,
PM<inf>2.5</inf>, PM<inf>1</inf>, and carbonaceous species in PM<inf>2.5</inf>were
monitored on-line in Langfang City on March 1-22, 2016. The PM<inf>10</inf>,
PM<inf>2.5</inf>, and PM<inf>1</inf>concentrations were 204.1 μg·m<sup>-
3</sup>, 107.9 μg·m<sup>-3</sup>, and 87.8 μg·m<sup>-3</sup>,
respectively. Diurnal variations in particulate matter concentrations showed a bimodal
distribution. In general, the mass concentrations of particulate matter and carbonaceous
species (OC, EC, SOC, and POC) and the ratios of PM<inf>1</inf>/PM<inf>10</inf>and
PM<inf>2.5</inf>/PM<inf>10</inf>were lower on better air quality periods. However, the
mass concentration of PM<inf>10</inf>was the highest on moderately polluted times. The
ratios of PM<inf>1</inf>/PM<inf>10</inf>and PM<inf>2.5</inf>/PM<inf>10</inf>reached
minimum values on moderately polluted times.The mass concentration of OC was slightly
lower in moderately polluted periods than slightly polluted times; it was significantly
lower in moderately polluted periods compared to severely polluted time periods. Hourly
concentrations of OC and EC were lower between the hours of 13:00 and 23:00 compared to
slightly polluted and severely polluted periods. The proportion of PM<inf>2.5</inf>and
PM<inf>1</inf>decreased in moderately polluted time periods, consistent with the
corresponding primary pollutants. Besides, the value of OC/EC was larger than 2.0. The
concentrations of SOC and POC estimated using the minimum OC/EC ratio were 12.2
μg·m<sup>-3</sup>and 5.0 μg·m<sup>-3</sup>, respectively.<br/> ©
2017, Science Press. All right reserved.
Number of references:41
Main heading:Particles (particulate matter)
Controlled terms:Air quality
Uncontrolled terms:Air quality levels - Carbonaceous fractions - Langfang City - Online
monitoring - Particulate Matter
Classification code:451.2 Air Pollution Control - 951 Materials Science
DOI:10.13227/j.hjkx.201702090
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 14>
Accession number:20175004525235
Title:Effects of Straw Incorporation on Cadmium Accumulation and Subcellular Distribution
in Rice
Authors:Duan, Gui-Lan (1); Wang, Fang (1, 2); Cen, Kuang (2); Wang, Bo-Xun (1, 3); Cheng,
Wang-Da (4); Liu, Yue-Chuan (5); Zhang, Hong-Mei (4)
Author affiliation:(1) Research Center for Eco-Environmental Sciences, Chinese Academy of
Sciences, Beijing; 100085, China; (2) School of Earth Sciences and Resources, China
University of Geosciences, Beijing; 100083, China; (3) College of Resource Environment
and Tourism, Capital Normal University, Beijing; 100048, China; (4) Jiaxing Academy of
Agricultural Sciences, Jiaxing; 314016, China; (5) Agricultural Bureau of Youxian County,
Hunan Province, Zhuzhou; 412300, China
Corresponding author:Zhang, Hong-Mei(xiuyingyifei10@sina.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3927-3936
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Cadmium (Cd) is classified as a Group-1 human carcinogen and rice consumption
constitutes a major source of dietary intake of Cd for populations whose staple food is
rice. Straw incorporation is widely performed in Cd-contaminated paddy fields, which may
significantly affect the bioavailability of Cd in soil and the distribution of Cd in rice
plants, consequently altering Cd accumulation in rice grains. In this study, both pot and
field trials were conducted to investigate the effects of different amounts of straw
incorporation (0.0%, 1.0%, 2.5%, and 5.0%) on Cd sub-cellular distribution in rice plants
and Cd accumulation in rice grains. The results showed that Cd was mainly sequestered in
cell wall, accounting for 86%-95% and 30%-51% of total cadmium in root and shoot cells,
respectively. In shoot cells, about 35%-61% of Cd was distributed in cellular soluble
fractions. When rice straw was incorporated at 1.0% and 2.5% levels, Cd sequestration in
the cell wall significantly increased and Cd translocation from roots to shoots
significantly decreased. However, when rice straw was incorporated at the 5% level, Cd
sequestration in root cell walls significantly decreased and Cd translocation from roots
to shoots significantly increased at the tillering stage. At the filling stage, 5% rice
straw incorporation still significantly increased Cd sequestration in root cell walls and
Cd translocation from roots to shoots did not significantly change. The rice straw and
rape straw used for the field trail contained high concentrations of Cd (0.49 and 0.67
mg·kg<sup>-1</sup>, respectively). Rape straw incorporation alone or together with
lime did not significantly affect Cd accumulation in brown rice or rice straw. Rice straw
incorporation alone did not significantly affect Cd accumulation in brown rice or rice
straw, while incorporation with lime significantly decreased Cd accumulation in both
brown rice and rice straw. Biochar application can also significantly reduce Cd
accumulation in rice and when biochar was added together with lime, the reduction in Cd
accumulation in rice was more significant. Therefore, at Cd-contaminated paddy fields,
rice straw or rape straw is not suggested to be returned directly; incorporation with
lime would be better for reducing Cd accumulation in rice grains. The results of this
study will provide theoretical and practical guidance for the safe production of rice and
for straw recycling at Cd-polluted paddy fields.<br/> © 2017, Science Press. All
right reserved.
Number of references:36
Main heading:Grain (agricultural product)
Controlled terms:Biochemistry - Cadmium - Cells - Chemical contamination - Cytology -
Lime - Soil pollution
Uncontrolled terms:Cell walls - Rice - Straw incorporations - Subcellular distribution -
Translocation factor
Classification code:461.2 Biological Materials and Tissue Engineering - 483.1 Soils and
Soil Mechanics - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth
Metals - 801.2 Biochemistry - 804.2 Inorganic Compounds - 821.4 Agricultural Products
- 822.3 Food Products
Numerical data indexing:Percentage 0.00e+00%, Percentage 1.00e+00%, Percentage 2.50e+00%,
Percentage 3.00e+01% to 5.10e+01%, Percentage 3.50e+01% to 6.10e+01%, Percentage 5.00e
+00%, Percentage 8.60e+01% to 9.50e+01%
DOI:10.13227/j.hjkx.201703185
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 15>
Accession number:20175004525203
Title:Analysis of Spatial Variability of Water Quality and Pollution Sources in Lihe
River Watershed, Taihu Lake Basin
Authors:Lian, Hui-Shu (1); Liu, Hong-Bin (1); Li, Xu-Dong (2); Song, Ting (3, 4); Lei,
Qiu-Liang (1); Ren, Tian-Zhi (5); Wu, Shu-Xia (1); Li, Ying (1)
Author affiliation:(1) Key Laboratory of Nonpoint Source Pollution Control, Ministry of
Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy
of Agricultural Sciences, Beijing; 100081, China; (2) School of Agriculture and Biology,
Shanghai Jiao Tong University, Shanghai; 200240, China; (3) School of Environmental
Science and Engineering, Nanjing University of Information Science & Technology,
Nanjing; 210044, China; (4) Wuxi Environmental Monitoring Centre, Wuxi; 214121, China;
(5) Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin; 300191,
China
Corresponding author:Lei, Qiu-Liang(leiqiuliang@caas.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3657-3665
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The source of pollutants in the Tai Lake basin and the characteristics of
spatiotemporal variations were studied by conducting water quality monitoring in the Lihe
River watershed to the west of Tai Lake in 2014. The dynamic changes in total phosphorus
(TP), ammonia nitrogen (NH<inf>4</inf><sup>+</sup>-N), and chemical oxygen demand (COD)
were studied in flood and non-flood seasons at five monitoring points from upstream to
downstream. The average concentrations of TP, NH<inf>4</inf><sup>+</sup>-N, and COD were
0.176 mg·L<sup>-1</sup>, 1.075 mg·L<sup>-1</sup>, and 10.626
mg·L<sup>-1</sup>respectively, and the water quality was lower than the grade IV
standard. From upstream to downstream, the concentrations of TP and NH<inf>4</inf><sup>
+</sup>-N gradually increased. The water quality downstream was poor, worse than the
grade V standard; however, COD was low and met the grade IV standard. During the non-
flood season, the pollutant concentrations gradually increased from upstream to
downstream. There was no obvious trend in flood season. Concentrations of pollutants
gradually increased with the increase in the area of inhabited land and decrease in the
area of forest land. The population density, livestock, and poultry production were
significantly correlated with the concentrations of pollutants in the river. The
pollutants in the Lihe River watershed mainly originated from human activities, and
livestock and poultry breeding activities.<br/> © 2017, Science Press. All right
reserved.
Number of references:35
Main heading:River pollution
Controlled terms:Agriculture - Chemical oxygen demand - Floods - Forestry - Lake
pollution - Lakes - Pollution - Population statistics - Quality control - Rivers - Water
pollution - Water quality - Water resources - Watersheds
Uncontrolled terms:Average concentration - Dynamic characteristics - Non-point source
pollution - Pollutant concentration - Pollutant sources - Population densities - Spatio-
temporal variation - Water quality monitoring
Classification code:444 Water Resources - 444.1 Surface Water - 445.2 Water Analysis -
453 Water Pollution - 821 Agricultural Equipment and Methods; Vegetation and Pest
Control - 913.3 Quality Assurance and Control
Numerical data indexing:Mass_Density 1.06e-02kg/m3, Mass_Density 1.08e-03kg/m3,
Mass_Density 1.76e-04kg/m3
DOI:10.13227/j.hjkx.201703121
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 16>
Accession number:20175004525228
Title:Comparison of Soil Hydraulic Characteristics Under the Conditions of Long-term Land
Preparation and Natural Slope in Longtan Catchment of the Loess Hilly Region
Authors:Feng, Tian-Jiao (1, 2); Wei, Wei (1); Chen, Li-Ding (1); Chen, Die (1, 2); Yu,
Yang (1, 3); Yang, Lei (1)
Author affiliation:(1) State Key Laboratory of Urban and Regional Ecology, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085,
China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3)
Research Center on Soil and Water Conservation of the Ministry of Water Resources,
Department of Sediments Research, China Institute of Water Resource and Hydropower
Research, Beijing; 100048, China
Corresponding author:Wei, Wei(weiwei@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3860-3870
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Soil moisture plays a crucial role in maintaining the health and sustainability
of dryland ecosystems. Terracing and other similar land preparations can reshape the
natural slope and change underlying surface into different micro-landforms, which are
significant for rainwater harvesting, erosion control, and vegetation promotion in arid
regions. In this study, the Longtan Watershed in Dingxi region was selected as the study
area. Based on in situ experiments, soil sampling analysis, and modeling simulation, the
effects of land preparation and artificial vegetation (Fish-scale pit/Adverse grade
tableland-Platycladus orientalis) on soil moisture characteristics curves and soil
moisture constants were quantitatively analyzed. (1)The land preparations could
effectively improve the soil moisture content in the study catchment of Loess Plateau.
Compared with natural slope, soil water content of land preparations increased by
1.883%(volume fraction) on average and fish-scale pit method and adverse grade tableland
method enhanced the soil moisture by 29.69% and 15.55%, respectively. (2) Compared with
the natural slope, fish-scale pit and adverse grade tableland could significantly improve
the soil hydraulic properties. After carrying out the land preparations, saturated soil
water content and soil properties such as field capacity increased by 4.24%-11.40%,
suggesting that land preparations can improve soil moisture and water supply ability. (3)
Surface soil moisture characteristics were better than those of the underlying soil
layers after land preparations. Compared with the natural slope, fish-scale pit and
adverse grade tableland's shallow soil layer (0-20 cm) increased the moisture by 38.75%
and 23.84%, respectively, whereas in the deep layer (60-80 cm) the increment of moisture
were only 3.34% and 3.85%, respectively. This research provides scientific basis for
vegetation restoration and land improvement in fragile semi-arid ecosystems.<br/> ©
2017, Science Press. All right reserved.
Number of references:33
Main heading:Soils
Controlled terms:Buoyancy - Catchments - Ecology - Ecosystems - Fish - Landforms -
Moisture - Runoff - Sediments - Soil moisture - Vegetation - Water content - Water
supply
Uncontrolled terms:Loess Plateau - Platycladus orientalis - Saturated soil-water contents
- Soil hydraulic properties - Soil hydraulics - Soil-water characteristic curve -
Specific water capacity - Vegetation restoration
Classification code:442.1 Flood Control - 446.1 Water Supply Systems - 454.3 Ecology
and Ecosystems - 481.1 Geology - 483 Soil Mechanics and Foundations - 483.1 Soils and
Soil Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids
Numerical data indexing:Percentage 1.56e+01%, Percentage 2.38e+01%, Percentage 2.97e+01%,
Percentage 3.34e+00%, Percentage 3.85e+00%, Percentage 3.88e+01%, Percentage 4.24e+00% to
1.14e+01%, Size 0.00e+00m to 2.00e-01m, Size 6.00e-01m to 8.00e-01m
DOI:10.13227/j.hjkx.201702126
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 17>
Accession number:20175004525216
Title:Mechanism of Photochemical Degradation of MC-LR by Pyrite
Authors:Zhou, Wei (1, 2, 3); Fang, Yan-Fen (1, 2, 3); Zhang, Yu (1); Wu, Chun-Hong (1, 2,
3); Huang, Ying-Ping (1, 2, 3)
Author affiliation:(1) College of Biology and Pharmacy, China Three Gorges University,
Yichang; 443002, China; (2) Engineering Research Center of Eco-environment in Three
Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang;
443002, China; (3) Collaborative Innovation Center of Geo-Hazards and Eco-Environment in
the Three Gorges Area, China Three Gorges University, Yichang; 443002, China
Corresponding author:Huang, Ying-Ping(chem_ctgu@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3762-3768
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Pyrite was used as catalyst to degrade Microcystin-LR (MC-LR) at pH 6.8 under
visible light irradiation (λ>420 nm). X-ray diffraction (XRD) and scanning
electron microscope (SEM) characterization showed that pyrite had the layered structure.
The ion state of pyrite before and after the reaction was identified using X-Ray
Photoelectron Spectroscopy (XPS), confirming the conversion process of Fe(II) to Fe(III)
on the sulfur defect sites. Electron Spin Resonance (ESR) test showed that pyrite
photochemical reaction produced hydroxyl radical (·OH). The results of high
performance liquid chromatography (HPLC) and liquid chromatograph-mass spectrometer (LC-
MS) showed that visible light irradiation could effectively activate pyrite to degrade
MC-LR. The degradation rate of MC-LR reached 100% after 10 hours and the mineralization
rate reached 60% after 20 hours. The two reaction pathways of photochemical oxidation of
MC-LR by pyrite were discussed.<br/> © 2017, Science Press. All right reserved.
Number of references:26
Main heading:X ray photoelectron spectroscopy
Controlled terms:Chromatography - Degradation - Electron spin resonance spectroscopy -
High performance liquid chromatography - Iron compounds - Iron oxides - Irradiation -
Light - Liquid chromatography - Magnetic moments - Photochemical reactions -
Photodegradation - Pyrites - Scanning electron microscopy - Spectrometers - Toxic
materials - X ray diffraction
Uncontrolled terms:Conversion process - Hydroxyl radicals - Layered Structures -
Photochemical degradation - Photochemical oxidation - Reaction pathways - Visible light -
Visible-light irradiation
Classification code:701.2 Magnetism: Basic Concepts and Phenomena - 741.1 Light/Optics
- 741.3 Optical Devices and Systems - 801 Chemistry - 802.2 Chemical Reactions - 804.2
Inorganic Compounds
Numerical data indexing:Percentage 1.00e+02%, Percentage 6.00e+01%, Time 3.60e+04s, Time
7.20e+04s
DOI:10.13227/j.hjkx.201603216
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 18>
Accession number:20175004525236
Title:Redox Transformation of Arsenic and Antimony in Soils Mediated by Pantoea sp. IMH
Authors:Zhang, Lin (1); Lu, Jin-Suo (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture & Technology, Xi'an; 710055, China
Corresponding author:Lu, Jin-Suo(lujinsuo@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3937-3943
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Soil contamination with co-existing arsenic (As) and antimony (Sb) has become a
serious environmental problem worldwide. Microorganisms play a dominant role in the redox
transformation and mobilization of As and Sb. As and Sb belong to the same family; they
are alike in nature and have related microbial oxidation-reduction mechanisms. However,
limited knowledge is available about the impact of As-reducing bacteria on the fate of As
and Sb in their co-existing soils. The purpose of this study was to explore the redox
transformation and release of As and Sb in the presence of an arsC carrier, Pantoea sp.
IMH, which has high As(V)-reducing capability. In addition to the IMH incubation system,
the dead cell system and abiotic control experiments were conducted. The results showed
that the IMH incubation reduced all soluble As(V) (72.7 μg·L<sup>-1</sup>) to
As(III) form, whereas soluble Sb(V) (364.8 μg·L<sup>-1</sup>) was not reduced,
indicating that the As (V)-reducing pathway mediated by arsC genesis was not able to
reduce Sb(V). The amounts of total As (506.8 μg·L<sup>-1</sup>) and total Sb
(821.1 μg·L<sup>-1</sup>) in the dead cell system were approximately four times
higher than in the living cell system (As=155.2 μg·L<sup>-1</sup>; Sb=364.8
μg·L<sup>-1</sup>) and the abiotic control (As=57.6 μg·L<sup>-
1</sup>; Sb=271.1 μg·L<sup>-1</sup>) because of the biomolecules released from
the dead cells which enhanced the release of As and Sb. The correlation analysis of
dissolved As and Sb showed that the release of total As and Sb was correlated (P<0.05)
in three systems. Our study shed new light on the impact of bacteria on the fate of As
and Sb in soils.<br/> © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Antimony compounds
Controlled terms:Antimony - Arsenic - Bacteria - Cells - Cytology - Soil pollution -
Soils
Uncontrolled terms:Abiotic controls - arsC - Correlation analysis - Environmental
problems - Microbial oxidation - Pantoea - Redox transformations - Soil contamination
Classification code:461.2 Biological Materials and Tissue Engineering - 483.1 Soils and
Soil Mechanics - 546.4 Antimony and Alloys - 804 Chemical Products Generally
Numerical data indexing:Mass_Density 3.65e-04kg/m3, Mass_Density 5.07e-04kg/m3,
Mass_Density 7.27e-05kg/m3, Mass_Density 8.21e-04kg/m3
DOI:10.13227/j.hjkx.201701115
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 19>
Accession number:20175004525199
Title:Levels, Sources, and Health Risk Assessments of Heavy Metals in Indoor Dust in a
College in the Pearl River Delta
Authors:Cai, Yun-Mei (1, 2); Huang, Han-Shu (1); Ren, Lu-Lu (1); Zhang, Yan-Lin (1)
Author affiliation:(1) Guangdong Polytechnic of Environmental Protection Engineering,
Foshan; 528216, China; (2) Guangdong Key Laboratory of Environment and Resources,
Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou; 510640,
China
Corresponding author:Zhang, Yan-Lin(zylin1980@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3620-3627
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Thirty indoor dust samples were collected from staff and study areas in a
college in Foshan, and the As, Hg, Cd, Cu, Zn, Ni, Pb, and Cr contents were measured. The
Spearman correlation coefficient, principal component analysis, and US EPA health risk
assessment model were used to determine the sources and degree of pollution and the
health risks. The results showed that the levels of the eight heavy metals were higher
than the background values in Guangdong Province and the reported values in other Chinese
cities, excluding Hg. The levels of the eight heavy metals were higher in the staff area
than in the study area, but the difference was not significant. The eight heavy metals
were derived from similar sources; Hg was mainly derived from outdoor anthropogenic
sources, while the others were mainly derived from indoor anthropogenic sources. The
daily non-carcinogenic exposure dose was in the following order: ingestion>dermal
exposure>inhalation. Ingestion was the major pathway of heavy metal exposure from
indoor dust. Except for Cr, the non-carcinogenic hazard indexes of ingestion and dermal
exposure were taken from partial sample points>1. All of the health risks were lower
than the average risk thresholds of the heavy metals, and would not cause health risks to
humans. Printers, copiers, instruments, and equipment were important sources of indoor
pollution and risk sources of heavy metals. Thus, protective measures should be taken to
reduce the risk of exposure.<br/> © 2017, Science Press. All right reserved.
Number of references:33
Main heading:River pollution
Controlled terms:Air pollution - Dust - Elementary particle sources - Health - Health
risks - Heavy metals - Lead - Pollution - Principal component analysis - Risk assessment
Uncontrolled terms:Anthropogenic sources - Degree of pollutions - Exposure dosage -
Guangdong Province - Indoor dust - Protective measures - Risk of exposures - Spearman
correlation coefficients
Classification code:451 Air Pollution - 451.1 Air Pollution Sources - 453 Water
Pollution - 461.6 Medicine and Pharmacology - 461.7 Health Care - 531 Metallurgy and
Metallography - 546.1 Lead and Alloys - 914.1 Accidents and Accident Prevention - 922.2
Mathematical Statistics
DOI:10.13227/j.hjkx.201703256
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 20>
Accession number:20175004525205
Title:Characterization of Phosphorus Fractions in the Soil of Water-Level-Fluctuation
Zone and Unflooded Bankside in Pengxi River, Three Gorges Reservoir
Authors:Huang, Jun-Jie (1); Wang, Chao (1); Fang, Bo (1); Feng, Lei (1); Fang, Fang (1);
Li, Zhe (2); Guo, Jin-Song (2)
Author affiliation:(1) College of Urban Construction & Environmental Engineering,
Chongqing University, Chongqing; 400045, China; (2) Chongqing Institute of Green and
Intelligent Technology, Chinese Academy of Sciences, Chongqing; 401122, China
Corresponding author:Fang, Fang(fangfangcq@cqu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3673-3681
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The concentrations of phosphorus fractions in the soils of the water-level-
fluctuating zone (WLFZ) of Pengxi River in the Three Gorges Reservoir were analyzed. The
total phosphorus (TP), inorganic phosphorus (IP), and organic phosphorus (OP) were
studied using the standard measurement and test (SMT) procedure. The average TP
concentration was 575.29 mg·kg<sup>-1</sup>and the average OP concentration was
91.23 mg·kg<sup>-1</sup>in the soils of WLFZ. The fractions of phosphorus were
analyzed by the Hedley method. In the soils of WLFZ, the relative abundance of WA-
P<inf>i</inf>(weakly adsorbed inorganic phosphorus), PA-P<inf>i</inf>(potential active
inorganic phosphorus), and Fe/Al-P<inf>i</inf>(Fe/Al-bound inorganic phosphorus)
accounted for 11.61% of the extractable P<inf>i</inf>, lower than that in the unflooded
bankside soils. The relative abundance of WA-P<inf>o</inf>(weakly adsorbed organic
phosphorus) and PA-P<inf>o</inf>(potential active organic phosphorus) accounted for
22.28% of the extractable P<inf>o</inf>and the Fe/Al-P<inf>o</inf>(Fe/Al-bound organic
phosphorus) accounted for 66.30%. In addition, the P<inf>o</inf>content of the soils of
WLFZ was lower than that of the unflooded bankside soils and the difference in the
Fe/Al-P<inf>o</inf>content in both soil types was the highest. WA-P<inf>t</inf>and PA-
P<inf>t</inf>were significantly correlated with TP in the soils of WLFZ, which indicated
that the active phosphorus content was mainly affected by TP. There was no statistical
correlation between different fractions of phosphorus, suggesting different sources of
phosphorus fractions. The Fe/Al-P<inf>t</inf>content was significantly correlated with
OM, implying that the OM content may affect the Fe/Al-P<inf>t</inf>content. Therefore,
under flood conditions, the potential impacts of phosphorus in the soils of WLFZ on
overlying water should not be neglected.<br/> © 2017, Science Press. All right
reserved.
Number of references:33
Main heading:Phosphorus
Controlled terms:Platinum - Reservoirs (water) - Soils - Water levels - Water resources
Uncontrolled terms:Fractions - Inorganic phosphorus - Organic phosphorus - Phosphorus
fractions - Standard measurements - Statistical correlation - Three gorges reservoir -
Water-level-fluctuation zones
Classification code:441.2 Reservoirs - 444 Water Resources - 483.1 Soils and Soil
Mechanics - 547.1 Precious Metals - 804 Chemical Products Generally
Numerical data indexing:Percentage 1.16e+01%, Percentage 2.23e+01%, Percentage 6.63e+01%
DOI:10.13227/j.hjkx.201702204
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 21>
Accession number:20175004525232
Title:Effects and Mechanisms of In-situ Cement Solidification/Stabilization on a Pb-,
Zn-, and Cd-Contaminated Site at Baiyin, China
Authors:Lü, Hao-Yang (1, 2); Fei, Yang (1); Wang, Ai-Qin (2); Yan, Xiu-Lan (1); Li,
Fa-Sheng (3); Li, Chun-Ping (4); Du, Yan-Jun (5); Zheng, Zi-Ming (6)
Author affiliation:(1) Key Laboratory of Land Surface Pattern and Simulation, Institute
of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences,
Beijing; 100101, China; (2) Architecture & Civilengineering, Zhongyuan University of
Technology, Zhengzhou; 450007, China; (3) State Key Laboratory of Environmental Criteria
and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing; 100012,
China; (4) State Key Laboratory of Solid Waste Resources Utilization and Energy Saving
Building Materials, Beijing Building Materials Academy of Science Research, Beijing;
100041, China; (5) School of Transportation, Southeast University, Nanjing; 210096,
China; (6) Beijing No.2 Middle School, Beijing; 100010, China
Corresponding author:Yan, Xiu-Lan(yanxl@igsnrr.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3897-3906
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to evaluate the effects and mechanism of in-situ cement
solidification/stabilization (S/S) on heavy metal contaminated soils, leaching tests,
speciation analysis, and microscopic analysis were conducted after cement treatment of a
Pb, Zn, and Cd contaminated site in Baiyin, China. The leaching test results showed that
cement could effectively stabilize Cd and Zn, which could reduce 99.5%-100% and 96.6%-
98.8% of H<inf>2</inf>SO<inf>4</inf>-HNO<inf>3</inf>extractable Cd and Zn, respectively.
However, the leaching concentration of Pb was 2.6-5.8 times higher than that before 5%
cement treatment. After adding 8% cement, H<inf>2</inf>SO<inf>4</inf>-
HNO<inf>3</inf>extractable Cd and Zn were reduced by 99.6%-100% and 94.4%-97.9%
respectively. Similarly, the leaching concentration of Pb was 1.9-12.5 times higher than
that before 8% cement treatment. The results of sequential extraction test proposed by
the European Community Bureau of Reference (BCR) showed that cement could transform acid
extractable Cd and Zn to residual form and transform reducible fractions of Pb to
oxidizable and residual form, increasing the stability of heavy metals in soil. The
microscopic analysis results showed that Pb<sup>2+</sup>, Zn<sup>2+</sup>, and
Cd<sup>2+</sup>could participate in the process of cement hydration and form silicate
minerals and hydroxides. In conclusion, cement could be an effective S/S agent to
remediate heavy metal contaminated soils, and site characteristics and environmental
conditions should also be considered during the construction process.<br/> © 2017,
Science Press. All right reserved.
Number of references:27
Main heading:Soil pollution
Controlled terms:Cadmium - Cements - Contamination - Heavy metals - Hydration - Leaching
- Lead - Metal analysis - Metallography - Remediation - Silicate minerals - Silicates -
Soil cement - Soils - Solidification - Zinc
Uncontrolled terms:Cement solidifications - Environmental conditions - European community
bureau of references - Heavy metal contaminated soils - Leaching concentrations -
Leaching toxicity - Microscopic analysis - Solidification/stabilization
Classification code:412 Concrete - 412.1 Cement - 454.2 Environmental Impact and
Protection - 482.2 Minerals - 483.1 Soils and Soil Mechanics - 531 Metallurgy and
Metallography - 531.2 Metallography - 546.1 Lead and Alloys - 546.3 Zinc and Alloys -
549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 802.3
Chemical Operations
Numerical data indexing:Percentage 5.00e+00%, Percentage 8.00e+00%, Percentage 9.44e+01%
to 9.79e+01%, Percentage 9.66e+01% to 9.88e+01%, Percentage 9.95e+01% to 1.00e+02%,
Percentage 9.96e+01% to 1.00e+02%
DOI:10.13227/j.hjkx.201703018
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 22>
Accession number:20175004525219
Title:Start-up of a High Performance Nitrosation Reactor Through Continuous Growth of
Aerobic Granular Sludge
Authors:Gao, Jun-Jun (1); Qian, Fei-Yue (1, 3, 4); Wang, Jian-Fang (1, 2, 3, 4); Chen, Xi
(1); Shen, Yao-Liang (1, 3, 4); Zhang, Ze-Yu (1); Yan, Yu-Ting (2)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Tianping College, Suzhou University
of Science and Technology, Suzhou; 215009, China; (3) National and Local Joint
Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou;
215009, China; (4) Jiangsu Key Laboratory of Environmental Science and Engineering,
Suzhou; 215009, China
Corresponding author:Wang, Jian-Fang(wjf302@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3787-3792
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to examine the continuous growth capacity of the nitrosation granular
sludge (NGS), the sludge was inoculated to start up the columnar sequencing batch reactor
(SBR). During 130 d, the concentration of mixed liquor suspended solids (MLSS) in SBR
increased from 0.1 g·L<sup>-1</sup>to 11.8 g·L<sup>-1</sup>, corresponding
to the nitrite-nitrogen accumulation rate of 0.4-4.9 kg·(m<sup>3</sup>·d)
<sup>-1</sup>, promoted by a higher ammonia-nitrogen loading rate (NLR) from 0.74
kg·(m<sup>3</sup>·d)<sup>-1</sup>to 6.66 kg·
(m<sup>3</sup>·d)<sup>-1</sup>in the influent. Because of the obvious increase in
small granules (size<200 μm), the mean average diameter of NGS decreased
significantly at NLR<4.44 kg·(m<sup>3</sup>·d)<sup>-1</sup>. At higher
NLR values, the growth of the mean average diameter of NGS could be fitted well using a
modified logistic model. The specific growth rate of the k value was 0.022 9 d<sup>-
1</sup>. In addition, the combined inhibition of nitrite oxidizing bacteria (NOB) was
expected at relatively high concentrations of both free ammonia (FA) and free nitrite
acid (FNA); thus, the nitrite accumulation ratio (NAR) in the effluent was always higher
than 80%. These results provide a feasible approach to start up a high-performance NGS
reactor at the industrial-scale.<br/> © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Granular materials
Controlled terms:Ammonia - Bacteria - Batch reactors - Chemical reactions - Effluents -
Nitration - Nitrogen
Uncontrolled terms:Aerobic granular sludges - Ammonia loading rates - Biological reactor
- Mixed liquor suspended solids - Modified Logistic model - Nitrite-oxidizing bacteria -
Nitrosation - Sequencing batch reactors
Classification code:452.3 Industrial Wastes - 802.1 Chemical Plants and Equipment -
802.2 Chemical Reactions - 804 Chemical Products Generally - 804.2 Inorganic Compounds
- 951 Materials Science
Numerical data indexing:Mass_Density 1.00e-01kg/m3 to 1.18e+01kg/m3, Percentage 8.00e+01%
DOI:10.13227/j.hjkx.201703194
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 23>
Accession number:20175004525222
Title:Aerobic Degradation and Microbial Community Succession of Coking Wastewater with
Municipal Sludge
Authors:Liu, Guo-Xin (1); Wu, Hai-Zhen (1); Sun, Sheng-Li (1); Hu, Xiao-Yi (1); Wu,
Xiao-Ying (1); Chen, Hua-Yong (1); Fan, Yi-Wen (1); Hu, Cheng-Sheng (2); Wei, Chao-Hai
(3)
Author affiliation:(1) School of Bioscience and Bioengineering, South China University of
Technology, Guangzhou; 510006, China; (2) Guangzhou Municipal Engineering Maintenance
Department, Guangzhou; 510000, China; (3) School of Environment and Energy, South China
University of Technology, Guangzhou; 510006, China
Corresponding author:Wu, Hai-Zhen(hzhwu2@scut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3807-3815
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Coking wastewater is a typical industrial wastewater with high toxicity. Its
treatment with biological processes is often challenging because it contains constituents
inhibiting microbial activity. To study the inhibitory effect and possible acclimation of
microbes in coking wastewater treatment, municipal sludge was inoculated into coking
wastewater. Time-dependent concentrations of COD, phenol, ammonia nitrogen, and
thiocyanide in coking wastewater were analyzed. The microbial community structure was
investigated by the Illumina high-throughput sequencing technology during inoculation.
The results showed that COD began to decrease after 16 h and 97.1% of phenol disappeared
after 40 h. Thiocyanide began to degrade at 72 h and was undetectable after 96 h.
Accordingly, the concentration of ammonia increased as the thiocyanide concentrations
decreased. High-throughput pyrosequencing analysis showed that the microbial community
structure and species richness varied at different culture stages. In the stage of phenol
degradation, the abundance of Acinetobacter and Pseudomonas increased rapidly; the
species richness was 13.04% of the community at 48 h. In the stage of thiocyanate
degradation, Sphingobacterium, Brevundimonas, Lysobacter, and Chryseobacterium were the
dominant bacteria and were 16.13% of the community at 96 h. At 144 h, Fluviicola,
Stenotrophomonas, and Thiobacillus became the dominant species and were 22.45% of the
community abundance. The results showed that municipal sludge can rapidly overcome the
toxicity of coking wastewater because the pollutants are degraded rapidly. The microbial
community structure changed as wastewater components were degraded. Environmental factors
and the competition among bacteria played a key role in microbial community
succession.<br/> © 2017, Science Press. All right reserved.
Number of references:36
Main heading:Wastewater treatment
Controlled terms:Ammonia - Bacteria - Biodegradation - Microorganisms - Phenols - Social
sciences - Throughput - Toxicity
Uncontrolled terms:Aerobic degradation - Coking wastewater - Coking wastewater treatments
- High-throughput sequencing - Industrial wastewaters - Microbial communities - Microbial
community structures - Municipal sludge
Classification code:452.4 Industrial Wastes Treatment and Disposal - 461 Bioengineering
and Biology - 804.1 Organic Compounds - 804.2 Inorganic Compounds - 971 Social
Sciences
Numerical data indexing:Percentage 1.30e+01%, Percentage 1.61e+01%, Percentage 2.24e+01%,
Percentage 9.71e+01%, Time 1.44e+05s, Time 1.73e+05s, Time 2.59e+05s, Time 3.46e+05s,
Time 5.18e+05s, Time 5.76e+04s
DOI:10.13227/j.hjkx.201702146
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 24>
Accession number:20175004525213
Title:Removal of Algal Organic Matter and Control of Disinfection By-products by Powder
Activated Carbon
Authors:Miao, Yu (1); Zhai, Hong-Yan (1); Yu, Shan-Shan (1); Zhang, Jing (1); Shi,
Chang-Xiang (2)
Author affiliation:(1) Tianjin Engineering Center of Urban River Eco-Purification
Technology, School of Environmental Science and Engineering, Tianjin University, Tianjin;
300350, China; (2) Jiuquan Satellite Launch Center, Jiuquan; 732750, China
Corresponding author:Zhai, Hong-Yan(zhaihy@tju.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3738-3746
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The removal efficiencies of algal organic matter (AOM) and typical nitrogenous
and non-nitrogenous disinfection by-products (DBPs) through adsorption with powder
activated carbon (PAC) were investigated. Three-dimensional fluorescence spectroscopy
confirmed that PAC adsorption changed the composition of AOM. PAC adsorption showed high
removal efficiency for humus-like substances in AOM, but limited removal efficiency for
aromatic protein-like substances. When the dosage of PAC was 20 mg·L<sup>-
1</sup>and the adsorption time ranged from 10 to 30 min, the removal rates of 3.30
mg·L<sup>-1</sup>dissolved organic carbon were 20.7%-31.9% for intracellular
organic matter (IOM) and 12.6%-19.0% for extracellular organic matter (EOM). The highest
removal rates of trihalomethanes by PAC in the chlorination of IOM and EOM were 26.6% and
35.8%, respectively. The highest removal rates of haloacetonitriles were 49.6% and 53.6%
in the chlorination of IOM and EOM. The removal of dibromoacetonitrile precursors by PAC
was significant. In summary, the PAC had a higher efficiency in reducing the generation
of DBPs in EOM chlorination than in IOM chlorination.<br/> © 2017, Science Press.
All right reserved.
Number of references:31
Main heading:Organic carbon
Controlled terms:Activated carbon - Adsorption - Biogeochemistry - Biological materials -
Chlorination - Disinfection - Efficiency - Enzyme activity - Fluorescence spectroscopy -
Organic compounds - Removal - Soils - Water analysis
Uncontrolled terms:Algal organic matters - Disinfection by-product - Extracellular
organic matters - Intracellular organic matters - Microcystis aeruginosa - Nitrogenous
disinfection by-products - Powder activated carbon - Three-dimensional fluorescence
spectroscopies
Classification code:461.2 Biological Materials and Tissue Engineering - 461.9 Biology -
483.1 Soils and Soil Mechanics - 741.3 Optical Devices and Systems - 801 Chemistry -
801.2 Biochemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804
Chemical Products Generally - 804.1 Organic Compounds - 913.1 Production Engineering
Numerical data indexing:Mass_Density 2.00e-02kg/m3, Mass_Density 3.30e-03kg/m3,
Percentage 1.26e+01% to 1.90e+01%, Percentage 2.07e+01% to 3.19e+01%, Percentage 2.66e
+01%, Percentage 3.58e+01%, Percentage 4.96e+01%, Percentage 5.36e+01%, Time 6.00e+02s to
1.80e+03s
DOI:10.13227/j.hjkx.201612169
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 25>
Accession number:20175004525192
Title:Impact of Gusty Northwesterly Winds on Biological Particles in Winter in Beijing
Authors:Yan, Wei-Zhuo (1); Wang, Bu-Ying (1); Montana, Oscar Fajardo (1); Jiang, Jing-Kun
(1); Hao, Ji-Ming (1)
Author affiliation:(1) School of Environment, Tsinghua University, Beijing; 100084, China
Corresponding author:Jiang, Jing-Kun(jiangjk@tsinghua.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3561-3568
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Biological aerosol particles play a crucial role in cloud formation and
succession of ecosystems and have a large impact on human health. However, the variations
in the concentration, composition, and viability of biological particles remain unclear.
This study, conducted in January 2013 and January 2015 in Beijing, explores the influence
of meteorological conditions on the variations in the concentration and composition of
biological particles. Concentrations of biological particles were measured by an online
optical detector, waveband integrated bioaerosol sensor (WIBS-4A). The composition of
bacterial communities within biological particles was measured by 16S rDNA sequencing.
The results showed that the number concentration of biological particles ranged from 2
L<sup>-1</sup>to 150 L<sup>-1</sup>during winter. The wind could largely influence the
concentration and composition of biological particles. During gusty northwesterly winds,
when wind speed was above 4 m·s<sup>-1</sup>and wind direction was from the
northwest (~30°), the concentration increased by one order of magnitude, and the
composition of bacterial communities sharply changed. After the passage of gusty winds,
the composition gradually changed back to its prior state.<br/> © 2017, Science
Press. All right reserved.
Number of references:56
Main heading:Bacteria
Controlled terms:Aerosols - Biological materials - Wind
Uncontrolled terms:16s rDNA sequencing - Bioaerosols - Biological Aerosol - Westerly
winds - Winter
Classification code:443.1 Atmospheric Properties - 461.2 Biological Materials and
Tissue Engineering
Numerical data indexing:Velocity 4.00e+00m/s
DOI:10.13227/j.hjkx.201701110
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 26>
Accession number:20175004525201
Title:Spatial Distribution, Source and Ecological Risk Assessment of Heavy Metals in the
Coastal Sediments of Northern Dongying City
Authors:Liu, Qun-Qun (1); Meng, Fan-Ping (1); Wang, Fei-Fei (1); Cui, Hong-Wu (1); Wang,
Yue-Jie (1)
Author affiliation:(1) Key Laboratory for Marine Environment and Ecology, Ministry of
Education, Ocean University of China, Qingdao; 266100, China
Corresponding author:Meng, Fan-Ping(mengfanping@ouc.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3635-3644
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Concentrations of seven heavy metals in the coastal sediments of the northern
Dongying City were measured. The spatial distribution and sources of heavy metals were
discussed and the ecological risk was assessed using sediment quality guidelines (SQGs)
and the potential ecological risk index (PERI). The concentration ranges of Hg, As, Pb,
Cd, Cr, Cu, and Zn were calculated as 0.005-0.092, 3.44-10.41, 6.59-19.00, 0.50-1.10,
32.42-60.25, 1.72-23.78, and 31.13-69.96 mg·kg<sup>-1</sup>, respectively. Higher
metal concentrations were observed at site S10, which was close to the mouth of Tiaohe
River and contained plenty of organic matter, silt, and clay. Principal component
analysis (PCA) indicated that As and Pb in the sediments were derived from natural
weathering processes, while other metals were mainly attributed to anthropogenic sources,
i.e., land-sourced pollutants transported by runoff. Concentrations of As, Cd, Cr, and Cu
at some sampling sites exceeded the threshold effect level (TEL) stated in the SQGs
implying occasional harmful effects on biological life. PERI showed that the sediments in
this area generally had a medium risk, except sites S10, S3, and S9 posing a considerable
risk, and that Cd and Hg were the major contributors to the ecological risk. It is
necessary to take effective measures to control heavy metal fluxes from rivers around
this area and to reduce the risk.<br/> © 2017, Science Press. All right reserved.
Number of references:40
Main heading:River pollution
Controlled terms:Ecology - Estuaries - Heavy metals - Lead - Pollution - Principal
component analysis - Risk assessment - Sediments - Spatial distribution - Weathering
Uncontrolled terms:Anthropogenic sources - Distribution - Ecological risk assessment -
Ecological risks - Potential ecological risk - Sediment quality guideline (SQGs) - Source
- Threshold effect levels
Classification code:407.2 Waterways - 453 Water Pollution - 454.3 Ecology and
Ecosystems - 483 Soil Mechanics and Foundations - 531 Metallurgy and Metallography -
546.1 Lead and Alloys - 914.1 Accidents and Accident Prevention - 921 Mathematics -
922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201701048
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 27>
Accession number:20175004525207
Title:Hydrological Performance Assessment of Permeable Parking Lots in High Water Areas
Authors:Jin, Jian-Rong (1); Li, Tian (1); Wang, Sheng-Si (1); Chen, Zi-Juan (1); Zhou,
Jia-Wen (1)
Author affiliation:(1) State Key Laboratory of Pollution Control and Resource Reuse,
Tongji University, Shanghai; 200092, China
Corresponding author:Li, Tian(tianli@tongji.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3689-3695
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to evaluate the hydrological performance of permeable pavements in
mitigating the surface runoff, four pilot-scale permeable pavement units were constructed
in Shanghai and compared with impervious pavements. Three of the permeable facilities
with waterproof liners included a pervious concrete pavement (facility I), permeable
interlocking concrete pavement using cement stabilized macadam as the base course
(facility II) and permeable interlocking concrete pavement using macadam as the base
course (facility III). The other two facilities were a conventional permeable
interlocking concrete pavement without a liner (facility IV) and an impervious concrete
pavement control (facility 0). V-notch flow meters, data loggers, and a rainfall meter
were mounted to monitor the hydrological data. A double-ring infiltrometer was applied to
evaluate the infiltration rate of the pavements. During the one-year experiment, the
surface runoff and the underdrain discharge flow rate of the four pilot-scale facilities
were continuously monitored in actual rainfall and the total volume reduction, peak flow
reduction, and peak concentrating time of different facilities were investigated. The
results showed that the surface steady infiltration rates of permeable interlocking
concrete pavements were less than those of the pervious concrete, and the surface steady
infiltration rates of the two types of surface layers decreased after one year of usage.
The surface runoff reduction of the four facilities showed no significant differences.
The water volume reduction rate of the three types of facilities was weak. The annual
total volume reduction rates were 24.2%, 28.5%, and 28.4%, and the controlled rainfall
amounts were 5.2 mm, 7.8 mm, and 7.8 mm. The peak flow reduction rate and the time to the
peak flow of facility I were smaller than those of facility II and facility III. The peak
flow reduction rate and the time to the peak flow of the three facilities showed
significant negative correlation with rainfall intensity.<br/> © 2017, Science
Press. All right reserved.
Number of references:29
Main heading:Runoff
Controlled terms:Concrete pavements - Concretes - Infiltration - Rain - Urban growth -
Waterproof cement
Uncontrolled terms:Annual volumes - Cement-stabilized macadam - Hydrological effects -
Performance assessment - Permeable pavements - Pervious concrete pavements - Sponge city
development - Steady infiltration rate
Classification code:403.1 Urban Planning and Development - 412 Concrete - 412.1 Cement
- 442.1 Flood Control - 443.3 Precipitation
Numerical data indexing:Percentage 2.42e+01%, Percentage 2.84e+01%, Percentage 2.85e+01%,
Size 5.20e-03m, Size 7.80e-03m
DOI:10.13227/j.hjkx.201702110
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 28>
Accession number:20175004525221
Title:Analysis of Respirogram Characteristics of Filamentous Bulking Caused by Low
Dissolved Oxygen
Authors:Ma, Zhi-Bo (1); Li, Zhi-Hua (1); Yang, Cheng-Jian (1); He, Chun-Bo (2); Qiu,
Liang (1); Zhang, Jing (1)
Author affiliation:(1) Key Laboratory of Northwest Water Resource, Environment and
Ecology, Ministry of Education, School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China; (2) Department of Civil
and Environmental Engineering, Norwegian University of Science and Technology, Trondheim;
7050, Norway
Corresponding author:Li, Zhi-Hua(lizhihua@xauat.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3801-3806
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The current research on filamentous bulking focuses on the effluent quality and
the settling properties but the reports on the microbial physiology under filamentous
bulking conditions are seldom. In this study, the variations in the respirogram of
microorganisms and affinity coefficient during filamentous bulking were explored in a
sequence batch reactor. Low dissolved oxygen, regarded as the typical reason for
filamentous bulking, was applied as the stimulation method. The results showed that
microorganisms entered the physiological adaptation stage in the early period of low DO.
The following properties were observed in the system: (1) a sudden increase in the
endogenous specific oxygen uptake rate (SOUR<inf>e</inf>) of activated sludge, (2) an
abrupt decrease in the specific oxygen uptake rate (SOUR<inf>n</inf>) of autotrophic
bacteria, (3) a rapid increase after a slight decline in the specific oxygen uptake rate
(SOUR<inf>c</inf>) of heterotrophic bacteria and a sudden increase in the oxygen affinity
coefficient (K<inf>O</inf>). However, maintaining the low DO levels would deteriorate the
effluent quality and sedimentation properties, but the SOUR<inf>n</inf>and
SOUR<inf>c</inf>could recover to higher levels after a while and the COD affinity
coefficient (K<inf>S</inf>) and K<inf>O</inf>would decrease gradually. In low DO
conditions, a sufficient hydraulic retention time will benefit the effluent quality from
a theoretical point of view. Moreover, microorganisms could adapt to low DO conditions,
which verifies the feasibility of “low oxygen aeration theory” from the
respiration and kinetic parameters. The results from this study provide a theoretical
support for energy savings of sewage treatment plant operations.<br/> © 2017,
Science Press. All right reserved.
Number of references:28
Main heading:Dissolved oxygen
Controlled terms:Bacteria - Batch reactors - Dissolution - Effluents - Energy
conservation - Microorganisms - Oxygen - Physiology - Sewage treatment plants - Water
quality
Uncontrolled terms:Affinity coefficient - Filamentous bulking - Low dissolved oxygen -
Respirogram - Specific oxygen uptake rate
Classification code:445.2 Water Analysis - 452.2 Sewage Treatment - 452.3 Industrial
Wastes - 461.9 Biology - 525.2 Energy Conservation - 802.1 Chemical Plants and
Equipment - 802.3 Chemical Operations - 804 Chemical Products Generally
DOI:10.13227/j.hjkx.201701082
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 29>
Accession number:20175004525208
Title:Analysis of the Characteristics of Groundwater Quality in a Typical Vegetable
Field, Northern China
Authors:Yu, Jing (1); Yu, Min-Da (2); Lan, Yan (3); He, Xiao-Song (2); Li, Min (2)
Author affiliation:(1) State Key Laboratory of Geological Hazard Prevention and
Geological Environment Protection, Chengdu University of Technology, Chengdu; 610059,
China; (2) Institute of Environmental Standards, Chinese Research Academy of
Environmental Sciences, Beijing; 100012, China; (3) ASEAN Environmental Cooperation
Center, Beijing; 100035, China
Corresponding author:Li, Min(limin@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3696-3704
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study explores the impact of facility farming on the origin and composition
of groundwater and on the distribution characteristics of inorganic salts, heavy metals,
and dissolved organic matter in groundwater in a typical greenhouse vegetable planting
area in North China plains. The methods used include conventional analysis, UV-Visible,
and fluorescence spectroscopy combined with parallel factor analysis, principle
components analysis, and two-dimensional (2D) hetero-spectral correlation spectra
techniques. The results showed that the hydrochemistry type of groundwater in the
facility vegetable field was Cl-SO<inf>4</inf>, the nitrogen content was higher than the
National Groundwater V Class Quality Standard (GB/T14848-93), and the heavy metal content
was lower than the National Drinking Water Standard (GB5749-2006). The nitrification
process was blocked due to a strongly reducing atmosphere and shallow depth in
groundwater, which caused high concentrations of NH<inf>4</inf><sup>+</sup>-N. Part of
the toxic sulfur-containing metal content increased after the application of inorganic
fertilizers. The sources of dissolved organic matter in groundwater were similar; the
organic manure components which leach into groundwater were recently produced by
microbial metabolism. The main components of dissolved organic matter were small-
molecule-biodegradable protein-like substances and the fulvic-like content binding to
them. The fulvic-like content that bound to protein-like content in vegetable planting
groundwater was stable, while the protein-like content was greatly influenced by the
cultivation process of the organic manure application. In the process of vegetable
planting, organic manure should be applied scientifically and the supervision of the
planting area is crucial.<br/> © 2017, Science Press. All right reserved.
Number of references:39
Main heading:Quality control
Controlled terms:Absorption spectra - Biogeochemistry - Biological materials -
Cultivation - Dissolution - Fertilizers - Fluorescence - Fluorescence spectroscopy -
Greenhouses - Groundwater - Groundwater geochemistry - Heavy metals - Manures -
Metabolism - Metal analysis - Nitrification - Organic compounds - Potable water -
Principal component analysis - Proteins - Vegetables - Water quality
Uncontrolled terms:Dissolved organic matters - Distribution characteristics - Drinking
water standards - Fluorescence spectra - Greenhouse vegetables - Hetero-spectral
correlation - Parallel factor analysis - Principle components analysis
Classification code:444 Water Resources - 444.2 Groundwater - 445.2 Water Analysis -
461.2 Biological Materials and Tissue Engineering - 481.2 Geochemistry - 531
Metallurgy and Metallography - 711.2 Electromagnetic Waves in Relation to Various
Structures - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 802.2 Chemical
Reactions - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.1
Organic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
- 913.3 Quality Assurance and Control - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201703073
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 30>
Accession number:20175004525234
Title:Effects of Arbuscular Mycorrhizal Fungi on the Growth and Uptake of La and Pb by
Maize Grown in La and Pb-Contaminated Soil
Authors:Chang, Qing (1); Guo, Wei (1); Pan, Liang (1); Wang, Qi-Fan (1); Zhou, Xin-Nan
(1); Yang, Liang (1); Li, E (1)
Author affiliation:(1) School of Ecology and Environment, Inner Mongolia University,
Hohhot; 010021, China
Corresponding author:Guo, Wei(ndguowei@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3915-3926
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A greenhouse pot experiment was conducted to investigate the effects of
arbuscular mycorrhizal (AM) fungi Claroideoglomus etunicatum (CE) and Rhizophagus
intraradices (RI) on AM colonization rate, biomass, nutrient uptake, C: N: P
stoichiometry, and the uptake and transport of lanthanum (La) and lead (Pb) by maize (Zea
mays L.) grown in La-and Pb-contaminated soils (combined La-Pb concentrations of 50, 200,
and 800 mg·kg<sup>-1</sup>). The aim was to provide a scientific basis for the
remediation of soils contaminated by rare earth elements and heavy metals. The results
indicated that symbiotic associations were successfully established between the two
isolates and maize, and the average AM colonization rate ranged from 26.7% to 95.8%. The
increasing concentrations of La and Pb in soils significantly decreased the mycorrhizal
colonization rate, biomass, and mineral nutrition concentrations of the maize, and
significantly increased C: P and N: P ratios and the concentrations of La and Pb in
shoots and roots of maize. The shoot and root dry weights of maize were significantly
increased by 17.8%-158.9% with two AM fungi inoculations, while the P concentration of
shoots and roots of the maize were significantly increased by 24.5%-153.8%. Inoculation
with two AM fungi decreased the C: P and N: P ratios, consistent with the growth rate
hypothesis. With AM fungi inoculation in three types of La-Pb co-contaminated soils, root
Pb concentrations of the maize significantly increased by 51.3%-67.7%; shoot Pb
concentrations of the maize significantly decreased by 16.0%-67.7%; and the transport
rate of Pb from root to shoot of the maize decreased by 31.5%-54.7%. Meanwhile,
inoculation with AM fungi significantly increased the shoot La concentrations in the
maize grown in soils mildly contaminated with La-Pb, while it significantly decreased
shoot La concentrations, increased root La concentrations of maize, and inhibited the
transport of La from root to shoot of the maize grown in soils moderately contaminated
with La-Pb, but had no significant effect in severely contaminated soils. The results
showed that AM fungi had the potential to promote phytoremediation of soils contaminated
with rare earth elements and heavy metals, with potential applications to revegetate such
contaminated soil ecosystems.<br/> © 2017, Science Press. All right reserved.
Number of references:43
Main heading:Soil pollution
Controlled terms:Binary alloys - Bioremediation - Contamination - Ecology - Fungi - Grain
(agricultural product) - Heavy metals - Lanthanum - Lead - Nutrients - Pollution - Rare
earth elements - Rare earths - Remediation - Soil pollution control - Soils
Uncontrolled terms:Arbuscular mycorrhizal fungi - Maize (Zea mays L.) - Mycorrhizal
colonization - N:p stoichiometries - Pb-contaminated soil - Symbiotic association -
Transport - Uptake
Classification code:454.2 Environmental Impact and Protection - 454.3 Ecology and
Ecosystems - 483.1 Soils and Soil Mechanics - 531 Metallurgy and Metallography - 546.1
Lead and Alloys - 547.2 Rare Earth Metals - 804.2 Inorganic Compounds - 821.4
Agricultural Products
Numerical data indexing:Percentage 1.78e+01% to 1.59e+02%, Percentage 2.45e+01% to 1.54e
+02%, Percentage 2.67e+01% to 9.58e+01%, Percentage 3.15e+01% to 5.47e+01%
DOI:10.13227/j.hjkx.201702041
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 31>
Accession number:20175004525238
Title:Characteristics of Enteromorpha prolifera Biochars and Their Adsorption Performance
and Mechanisms for Cr(VI)
Authors:Chen, You-Yuan (1, 2); Hui, Hong-Xia (1); Lu, Shuang (1); Wang, Bao-Ying (1);
Wang, Zhi-Jie (1); Wang, Nan (1)
Author affiliation:(1) College of Environmental Science and Engineering, Ocean University
of China, Qingdao; 266100, China; (2) Key Laboratory of Marine Environmental Science and
Ecology, Ministry of Education, Shandong Provincial Key Laboratory of Marine Environment
and Geological Engineering, Ocean University of China, Qingdao; 266100, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3953-3961
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study aims to understand the recycling process of Enteromorpha prolifera by
using the slow pyrolysis technology to prepare biochars under different temperatures and
by characterizing the physicochemical properties of biochars. The results showed that a
relatively high level pyrolysis of Enteromorpha prolifera could be reached when the
temperature was up to 400℃. The yield rate and the ash content of biochars were
negatively correlated with the pyrolysis temperature, while the carbon content was
positively correlated. The specific surface area of Enteromorpha prolifera biochars was
in the range of 44.54-317.82 m<sup>2</sup>·g<sup>-1</sup>. The biochar surface was
in the shape of a honeycomb and rich in oxygen-containing functional groups, such as
hydroxyl (-OH) and carboxyl (-COOH) groups. The adsorption experiments revealed that the
adsorption of Cr(VI) onto Enteromorpha prolifera biochars followed the pseudo-second-
order kinetics equation and Langmuir isotherm, indicating that the adsorption process was
controlled by the fast reaction process and governed by monomolecular and chemical
adsorption. The optimal pH for Cr(VI) adsorption onto Enteromorpha prolifera biochars was
2 and their adsorption capabilities were in the order of
BC400>BC700>BC600>BC500>BC300 (the adsorption capacity of BC400 was 4.79
mg·g<sup>-1</sup>). The adsorption mechanism included the electrostatic
interactions between biochar and anions (HCrO<inf>4</inf><sup>-</sup>and
Cr<inf>2</inf>O<inf>7</inf><sup>2-</sup>) and the complexation of oxygen-containing
functional groups.<br/> © 2017, Science Press. All right reserved.
Number of references:38
Main heading:Chromium compounds
Controlled terms:Adsorption - Carbon - Isotherms - Mechanisms - Pyrolysis - Reaction
kinetics
Uncontrolled terms:Adsorption experiment - Adsorption performance - Bio chars -
Enteromorpha prolifera - Oxygen-containing functional groups - Physicochemical property -
Pseudo second order kinetics - Pyrolysis temperature
Classification code:601.3 Mechanisms - 802.2 Chemical Reactions - 802.3 Chemical
Operations - 804 Chemical Products Generally
Numerical data indexing:Specific_Surface_Area 4.45e+04m2/kg to 3.18e+05m2/kg
DOI:10.13227/j.hjkx.201701041
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 32>
Accession number:20175004525195
Title:Observational Study of Air Pollution Complex in Nanjing in June 2014
Authors:Hao, Jian-Qi (1, 2); Ge, Bao-Zhu (1); Wang, Zi-Fa (1); Zhang, Xiang-Zhi (3);
Tang, Li-Li (3); Xu, Dan-Hui (1, 2)
Author affiliation:(1) State Key Laboratory of Atmospheric Boundary Layer Physics and
Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences,
Beijing; 100029, China; (2) University of Chinese Academy of Sciences, Beijing; 100049,
China; (3) Jiangsu Environmental Monitoring Center, Nanjing; 210036, China
Corresponding author:Ge, Bao-Zhu(gebz@mail.iap.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3585-3593
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Studying the evolution of secondary inorganic aerosols, which are important
components of PM<inf>2.5</inf>, is crucial to improving our understanding about the air
pollution in big cities. This study investigates the evolution and factors of secondary
inorganic aerosols based on two pollution incidences in Nanjing in June 2014. A
significant characteristic of air pollution complex with the coexistence of higher
concentrations of both PM<inf>2.5</inf>and ozone is observed. In the earlier stage of the
pollution episode, ozone concentrations were high, which could exceed 250, triggering a
stronger oxidation in the atmosphere and a higher production potential of nitric acid
that leads to the quick production of nitrate. In the later period of the pollution
episode, relative humidity played an essential role. An increase in relative humidity
would result in a sharp decrease in the theoretical product of the partial pressures of
NH<inf>3</inf>and HNO<inf>3,</inf>especially when relative humidity exceeds the mutual
deliquesce relative humidity that makes it easier to form nitrate. The difference in the
theoretical and observational partial pressure product could characterize the evolution
of nitrate perfectly.<br/> © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Air pollution
Controlled terms:Aerosols - Nitrates - Ozone - Partial pressure - Pollution - Water
pollution
Uncontrolled terms:Liquid water content - Nanjing - Observational study - Ozone
concentration - Pollution episodes - Secondary inorganic aerosol
Classification code:451 Air Pollution - 453 Water Pollution - 804 Chemical Products
Generally - 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201702026
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 33>
Accession number:20175004525212
Title:Physiological Characteristics and Nitrogen and Phosphorus Uptake of Myriophyllum
aquaticum Under High Ammonium Conditions
Authors:Liu, Shao-Bo (1, 2, 3); Ran, Bin (4); Zeng, Guan-Jun (1, 2, 3); Li, Bao-Zhen (1,
2); Zhu, Hong-Mei (3); Liu, Feng (1, 2); Xiao, Run-Lin (1, 2); Wu, Jin-Shui (1, 2)
Author affiliation:(1) Key Laboratory of Agro-ecological Processes in Subtropical Region,
Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha; 410125,
China; (2) Changsha Research Station for Agricultural and Environmental Monitoring,
Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha; 410125,
China; (3) College of Resources and Environment, Hunan Agricultural University, Changsha;
410128, China; (4) College of Agriculture, Yangtze University, Jingzhou; 434000, China
Corresponding author:Li, Bao-Zhen(bzli@isa.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3731-3737
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Ammonium nitrogen (NH<inf>4</inf><sup>+</sup>-N) at high concentrations is toxic
to plants. In order to explore the NH<inf>4</inf><sup>+</sup>-N tolerance of Myriophyllum
aquaticum (M. aquaticum) and its ability of nitrogen (N) and phosphorus (P) uptake, this
study used a nutrient solution with three NH<inf>4</inf><sup>+</sup>-N levels (70, 210,
420 mg·L<sup>-1</sup>) to incubate M. aquaticum for 21 d. The characteristics of
plant physiology and N and P uptake of M. aquaticum were measured. At
NH<inf>4</inf><sup>+</sup>-N of 70 mg·L<sup>-1</sup>, M. aquaticum grew healthily,
and shoot height and biomass linearly increased with the increase incubation time.
Relative shoot height and biomass of M. aquaticum were 40.56 cm and 17.82
g·hole<sup>-1</sup>on day 21, respectively. Compared to the control with 70
mg·L<sup>-1</sup>ammonium, malondialdehyde (MDA) content of M. aquaticum was
significantly increased; chlorophyll and soluble sugar contents were also high at
NH<inf>4</inf><sup>+</sup>-N of 210 mg·L<sup>-1</sup>. M. aquaticum suffered from
the NH<inf>4</inf><sup>+</sup>-N stress. However, the stress of 210 mg·L<sup>-
1</sup>NH<inf>4</inf><sup>+</sup>-N did not affect its normal growth and there was no
significant difference in the relative growth rate of the shoot height and biomass
compared with the control. At NH<inf>4</inf><sup>+</sup>-N of 420 mg·L<sup>-
1</sup>, MDA contents of M. aquaticum doubled and the shoot height and biomass growth
rate were only 27.4% and 17.9% of those for 70 mg·L<sup>-
1</sup>NH<inf>4</inf><sup>+</sup>-N, indicating that M. aquaticum was subjected to
serious stress that caused unhealthy growth or even death. At three NH<inf>4</inf><sup>
+</sup>-N levels, the ranges of N and P content of M. aquaticum were 30.7-53.4
mg·g<sup>-1</sup>and 3.8-7.7 mg·g<sup>-1</sup>, respectively, which
indicated that M. aquaticum had a high uptake capacity of N and P. M. aquaticum is an
ideal wetland plant that has a good application prospect for constructed wetlands in
biological treatment of high-ammonia wastewater.<br/> © 2017, Science Press. All
right reserved.
Number of references:31
Main heading:Ecology
Controlled terms:Biological water treatment - Biomass - Nitrogen - Phosphorus -
Physiology - Stresses - Wastewater treatment - Wetlands
Uncontrolled terms:Ammonium - Constructed wetlands - High ammonia wastewater -
Myriophyllum aquaticum - Nitrogen and phosphorus - Physiological characteristics -
Relative growth rate - Soluble sugar contents
Classification code:445.1 Water Treatment Techniques - 452.4 Industrial Wastes
Treatment and Disposal - 454.3 Ecology and Ecosystems - 461.9 Biology - 804 Chemical
Products Generally
Numerical data indexing:Mass_Density 2.10e-01kg/m3, Mass_Density 4.20e-01kg/m3,
Mass_Density 7.00e-02kg/m3, Percentage 1.79e+01%, Percentage 2.74e+01%, Size 4.06e-01m
DOI:10.13227/j.hjkx.201701019
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 34>
Accession number:20175004525204
Title:Distribution of Different Phosphorus Species in Water and Sediments from Gaocun to
Lijin Reaches of the Yellow River
Authors:Zhao, Tun (1); Jia, Yan-Xiang (1); Jiang, Bing-Qi (1); Mei, Xiang-Yu (1); Li, Min
(1)
Author affiliation:(1) College of Environmental Science and Engineering, Beijing Forestry
University, Beijing; 100083, China
Corresponding author:Li, Min(liminbjfu@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3666-3672
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The Yellow River is the second longest river in China, which plays a very
important role in the transportation of nutrients at the regional and even global scale.
Water and sediment samples were collected at five sites located at the Gaocun to Lijin
reaches along the Yellow River and the distribution characteristics of different
phosphorus species were analyzed. The concentration of suspended particulate matter (SPM)
in water ranged from 1.89 to 2.67 g·L<sup>-1</sup>with an average of 2.26
g·L<sup>-1</sup>in May and from 0.43 to 1.79 g·L<sup>-1</sup>with an
average of 1.21 g·L<sup>-1</sup>in September. It almost had the same variation
rule as the water flux, which reflects the influence of water flux on SPM transportation.
The concentration of total phosphorus (TP) in water ranged from 0.05 to 2.31
mg·L<sup>-1</sup>in May and from 0.03 to 0.1 mg·L<sup>-1</sup>in September.
Particulate phosphorus (PP) was the dominant TP species in both months, and TP and PP
were significantly correlated (P<0.01), which implied that phosphorus loss in soil
from Gaocun to Lijin reaches is still serious. Water runoff was positively correlated
with TP and PP (P<0.05), but negatively correlated with total dissolved phosphorus
(TDP) and dissolved inorganic phosphorus (DIP) (P<0.05, P<0.01, respectively).
Increasing water runoff obviously increased the dilution of TDP and DIP. The
concentration of SPM was negatively correlated with DIP (P<0.01), the adsorption of
SPM on phosphorus was mainly the adsorption of DIP. The permanganate index in water was
higher in fall suggesting more serious organic pollution and it was positively correlated
with DIP (P<0.01). The phosphorus content in sediments was quite low in both months;
the total phosphorus (TP) content in sediments ranged from 284.23 to 569.58
mg·kg<sup>-1</sup>in May and from 287.97 to 355.39 mg·kg<sup>-1</sup>in
September. Calcium-bound phosphate (Ca-P) was the dominant species of inorganic
phosphorus (IP). The labile organic phosphorus (L-OP) content was significantly
correlated with runoff, SPM concentration, and permanganate index (P<0.01, P<0.05,
P<0.01, respectively). The organic phosphorus (OP) content was significantly higher at
the Lijin site in May, likely caused by the rainfall-runoff from the mining area around
Lijin. The energy-based production activities from the Gaocun to Lijin reaches should
also be further investigated.<br/> © 2017, Science Press. All right reserved.
Number of references:23
Main heading:Water resources
Controlled terms:Calcium - Calcium compounds - Eutrophication - Phosphorus - Population
distribution - River pollution - Rivers - Runoff - Sediments - Water - Water pollution
Uncontrolled terms:Calcium bound phosphate - Dissolved inorganic phosphorus -
Distribution characteristics - Phosphorus fractions - Suspended particulate matters -
Total dissolved phosphorus - Water eutrophication - Yellow river
Classification code:405.3 Surveying - 444 Water Resources - 444.1 Surface Water - 453
Water Pollution - 483 Soil Mechanics and Foundations - 549.2 Alkaline Earth Metals -
804 Chemical Products Generally
Numerical data indexing:Mass_Density 1.21e+00kg/m3, Mass_Density 1.89e+00kg/m3 to 2.67e
+00kg/m3, Mass_Density 2.26e+00kg/m3, Mass_Density 3.00e-05kg/m3 to 1.00e-04kg/m3,
Mass_Density 4.30e-01kg/m3 to 1.79e+00kg/m3, Mass_Density 5.00e-05kg/m3 to 2.31e-03kg/m3
DOI:10.13227/j.hjkx.201703098
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 35>
Accession number:20175004525194
Title:Distribution and Health Risk Assessment of Heavy Metals in Atmospheric Particulate
Matter and Dust
Authors:Wang, Yong-Xiao (1, 2, 3); Cao, Hong-Ying (1, 2); Deng, Ya-Jia (1, 2, 3); Zhang,
Qian (1)
Author affiliation:(1) Institute of Geographic Sciences and Natural Resources Research,
Chinese Academy of Sciences, Beijing; 100101, China; (2) Key Laboratory of Land Surface
Pattern and Simulation, Chinese Academy of Sciences, Beijing; 100101, China; (3) College
of Resources and Environment, University of Chinese Academy of Sciences, Beijing; 100049,
China
Corresponding author:Cao, Hong-Ying(caohy@igsnrr.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3575-3584
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to study the concentration, distribution characteristics, and health
risk assessment of toxic heavy metals, Cu, Mn, Pb, Ti, V, Cd, Cr, Co, Mo, and Ni, in
atmospheric particulate matter (PM) and dust, the PM and dust samples were collected in
all four seasons in 2014 in Beijing using two high volume air samplers (Echo Tecora Inc.,
Italy) and a dust tank, respectively. Selected metals were quantified by ICP-MS. Annual
average concentrations of PM<inf>2.5</inf>and PM<inf>10</inf>were 153.40
μg·m<sup>-3</sup>and 232.93 μg·m<sup>-3</sup>, which were five and
three times higher than the Ambient Air Quality Standard values (GB 3095-2012),
respectively. The average PM<inf>2.5</inf>/PM<inf>10</inf>was 0.74, implying that
PM<inf>2.5</inf>predominated the particulate matter concentrations. The results of
backward trajectory analysis suggested that exogenous particles originated from the
northwest, north-northeast, southeast, and southeast-northwest during winter, spring,
summer, and autumn, respectively. The order of annual average concentrations of selected
metals in PM<inf>2.5</inf>and PM<inf>10</inf>was
Ti>Mn>Pb>Cu>Cr>Ni>V>Cd>Mo>Co. The sum of the concentrations of
Ti, Mn, Pb, Cu, and Cr accounted for 91.93% and 92.49% of the total concentration of
target metals in PM<inf>2.5</inf>and PM<inf>10</inf>, respectively. The metal content of
dust followed the order of Ti>Mn>Pb>Cu>Ni>Cr>V>Co>Mo>Cd and Ti
(2 561.48 μg·g<sup>-1</sup>) accounted for 72.57% of the total metal content of
dust. The geo-accumulation index (I<inf>geo</inf>) of Cd, Pb, Cu, and Ni were 4.03, 2.49,
1.33, and 0.43, which represented the states of heavily to extremely contaminated,
moderately to heavily contaminated, moderately contaminated and uncontaminated to
moderately contaminated, respectively, indicating that dust in the target area included
significant amounts of Cd, Pb, and Cu. The health risk assessment suggested that non-
carcinogenic and carcinogenic risks of selected metals in PM<inf>10</inf>and dust were
within safe limits, but their long-term impact cannot be ignored.<br/> © 2017,
Science Press. All right reserved.
Number of references:43
Main heading:Pollution
Controlled terms:Air quality - Air quality standards - Cadmium - Contamination - Copper -
Dust - Health - Health risks - Heavy metals - Lead - Manganese - Metals - Molybdenum -
Nickel - Particles (particulate matter) - Risk assessment
Uncontrolled terms:Ambient air quality standards - Annual average concentration -
Atmospheric particulate matter - Backward trajectory analysis - Distribution
characteristics - Geo-accumulation index - Particulate Matter - Toxic heavy metals
Classification code:451.1 Air Pollution Sources - 451.2 Air Pollution Control - 461.6
Medicine and Pharmacology - 461.7 Health Care - 531 Metallurgy and Metallography -
543.2 Manganese and Alloys - 543.3 Molybdenum and Alloys - 544.1 Copper - 546.1 Lead
and Alloys - 548.1 Nickel - 549.3 Nonferrous Metals and Alloys excluding Alkali and
Alkaline Earth Metals - 902.2 Codes and Standards - 914.1 Accidents and Accident
Prevention - 951 Materials Science
Numerical data indexing:Percentage 7.26e+01%, Percentage 9.19e+01%, Percentage 9.25e+01%
DOI:10.13227/j.hjkx.201702054
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 36>
Accession number:20175004525231
Title:Application Potential and Assessment of Metallurgical Contaminated Soil After
Remediation in Tongguan of Shaanxi
Authors:Wang, Jiao (1); Xiao, Ran (1); Li, Rong-Hua (1); Ning, Xi-Cui (2); Jiang, Shun-
Cheng (1); Li, Xiao-Long (1); Zhang, Zeng-Qiang (1); Shen, Feng (1)
Author affiliation:(1) College of Natural Resources and Environment, Northwest A&F
University, Yangling; 712100, China; (2) Environmental Monitoring Station of Yangling
Demonstration Zone, Yangling; 712100, China
Corresponding author:Zhang, Zeng-Qiang(zhangzq58@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3888-3896
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:There has been a growing interest in soil replacement and in-situ stabilization
techniques in recent years. Many techniques in the remediation of contaminated soils have
been proven to be effective methods. In this study, lime and calcium phosphate were added
to immobilize the heavy metals in contaminated soils. The long-term application potential
of these techniques were evaluated by taking the demonstration project of the soil
remediation in Tongguan of Shaanxi as the case study.The status of heavy metal
contamination in the study area resulted from artisanal gold mining was discussed. The
strategies of remediation and the evaluation of the remediation results including the
safety of agricultural practices were also studied. The results showed that soil was
seriously contaminated in the study area with Cd, Pb, and Hg, and the residue mining
waste was the main source. The potential ecological risk index ranged from 668 to 10 969,
suggesting that all the samples posed a very strong ecological hazard. Based on the
pollution status, the soil replacement method and stabilization method were applied.
Acceptable remediation results were obtained with lower total metal content (except Cd)
and decreased heavy metal availability. However, the metal content of agricultural
products was higher than the permissible value according to GB 2762-2012, which means
that agricultural practices pose risks on remediated soils. Soil replacement and
stabilization would be practical techniques for heavy metal polluted soil remediation.
However, a consecutive investigation should be conducted for the assurance of food
safety.<br/> © 2017, Science Press. All right reserved.
Number of references:38
Main heading:Soil pollution
Controlled terms:Agricultural products - Agriculture - Cadmium - Contamination - Ecology
- Food safety - Gold mines - Heavy metals - Lead - Pollution - Remediation - Safety
engineering - Soil conservation - Soils - Stabilization
Uncontrolled terms:Agricultural practices - Artisanal gold minings - Assessment - Heavy
metal availabilities - Heavy metal contamination - Heavy metal polluted soils - Heavy
metal pollution - Potential ecological risk
Classification code:454.2 Environmental Impact and Protection - 454.3 Ecology and
Ecosystems - 461.6 Medicine and Pharmacology - 483.1 Soils and Soil Mechanics - 504.3
Heavy Metal Mines - 531 Metallurgy and Metallography - 546.1 Lead and Alloys - 549.3
Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 821
Agricultural Equipment and Methods; Vegetation and Pest Control - 821.4 Agricultural
Products - 914 Safety Engineering
DOI:10.13227/j.hjkx.201701122
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 37>
Accession number:20175004525227
Title:Influence of Calcium Carbonate and Biochar Addition on Soil Nitrogen Retention in
Acidified Vegetable Soil
Authors:Yu, Ying-Liang (1, 2); Yang, Lin-Zhang (1); Odindo, Alfred Oduor (2); Xue, Li-
Hong (1); He, Shi-Ying (1); Duan, Jing-Jing (1)
Author affiliation:(1) Key Laboratory of Agricultural Environment of the Lower Reaches of
the Yangtze River, Institute of Agricultural Resources and Environment, Jiangsu Academy
of Agricultural Sciences, Nanjing; 210014, China; (2) School of Agricultural, Earth &
Environmental Sciences, University of KwaZulu-Natal, Scottsville; 3209, South Africa
Corresponding author:Xue, Li-Hong(njxuelihong@gmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3851-3859
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In Taihu Lake region, more and more paddy fields are being converted to
vegetable fields, which cause serious soil acidification and decreased soil nitrogen
retention. In this study, calcium carbonate and biochar were used as acidification
amendments to test their ability on soil acidification remediation and soil nitrogen
retention improvement. Calcium carbonate and biochar addition rates were determined by pH
buffering curves. An incubation experiment with and without nitrogen fertilization and
multi-leaching simulation tests were conducted. The soil nitrogen mineralization rate,
dynamics of the nitrogen content in soils and leachates, and soil pH were measured. The
results showed that 3.92×10<sup>-2</sup>mol·kg<sup>-1</sup>calcium carbonate
and 27.73 g·kg<sup>-1</sup>biochar should be added into the tested acidified
vegetable soil to recover the original pH value. Without nitrogen fertilization, the
addition of calcium carbonate increased the soil nitrogen mineralization rate by 37% but
had no significant effect on mineral nitrogen content. However, biochar addition
significantly improved the soil nitrogen mineralization rate by 35%-44% and nitrate
content by 42%-58%. Nitrogen leaching loss was cut down by 42%-57% in biochar addition
treatment because of the lower leachate volume and nitrogen concentration, while calcium
carbonate addition increased nitrogen leaching loss by 12%-76% because of the higher
leachate nitrogen concentration. After leaching, the soil pH decreased for all the
treatments. The soil pH change was the lowest for calcium carbonate addition treatment
under no nitrogen fertilization and the lowest for biochar addition treatment under
nitrogen fertilization. This result suggests that calcium carbonate is more applicable
for seriously acidified soils which are fallowed and biochar is more suitable for the
intensified vegetable fields because it can improve the soil nitrogen retention and soil
pH, and reduce the nitrogen leaching loss.<br/> © 2017, Science Press. All right
reserved.
Number of references:34
Main heading:Nitrogen
Controlled terms:Acidification - Calcium - Calcium carbonate - Carbonation - Leachate
treatment - Leaching - Mineralogy - Soils - Vegetables
Uncontrolled terms:Bio chars - Mineral nitrogen content - Nitrogen concentrations -
Nitrogen fertilization - Nitrogen leaching - Soil nitrogen - Soil-nitrogen mineralization
- Vegetable soil
Classification code:482 Mineralogy - 483.1 Soils and Soil Mechanics - 549.2 Alkaline
Earth Metals - 802.2 Chemical Reactions - 802.3 Chemical Operations - 804 Chemical
Products Generally - 821.4 Agricultural Products - 822.2 Food Processing Operations
Numerical data indexing:Percentage 1.20e+01% to 7.60e+01%, Percentage 3.50e+01% to 4.40e
+01%, Percentage 3.70e+01%, Percentage 4.20e+01% to 5.70e+01%, Percentage 4.20e+01% to
5.80e+01%
DOI:10.13227/j.hjkx.201702194
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 38>
Accession number:20175004525215
Title:Influence of Current Densities on Mineralization of Indole by BDD Electrode
Authors:Zhang, Jia-Wei (1); Wang, Ting (1); Zheng, Tong (1); Jiang, Huan (1); Ni, Jin-Ren
(1)
Author affiliation:(1) Key Laboratory of Water and Sediment Sciences, Ministry of
Education, Department of Environmental Engineering, Peking University, Beijing; 100871,
China
Corresponding author:Ni, Jin-Ren(nijinren@iee.pku.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3755-3761
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Electrochemical oxidation by boron-doped diamond (BDD) electrode is an effective
method of degrading refractory organics. Compared with TOC detection, the amount of gas
escape can more effectively and intuitively reflect the mineralization and the removal
extent. In this study, indole is chosen as a typical pollutant and the detection of its
removal rate was compared at current densities of 10, 20, and 30 mA·cm<sup>-
2</sup>. Meanwhile, the degradation mechanism was analyzed based on the changes in the
carbon and nitrogen forms and conservation status. As a result, BDD electrodes displayed
a higher removal efficiency to indole, which can completely be removed after 8 h, 5 h,
and 4 h with current densities of 10, 20 and 30 mA·cm<sup>-2</sup>, respectively.
Changes in TOC removal and CO<inf>2</inf>generation were both increased with increasing
the current densities, suggesting that the mineralization extent was in accordance with
current densities. Furthermore, the escaped CO<inf>2</inf>, combined with TOC and TIC
constituted a conservative carbon system. The byproduct isatin was stable and accumulated
at 4-5 h, as TOC, TON, and CO<inf>2</inf>generation was unchanged at this stage. Finally,
the XPS analysis suggested the adsorption by-products such as isatin and benzoquinone on
the BDD surface, which can further be removed by increasing the electrolysis time. This
study demonstrated the mineralization process of indole based on the escaped gas
detection and the changes in the carbon and nitrogen forms, which will increase the
understanding of the electrolysis process.<br/> © 2017, Science Press. All right
reserved.
Number of references:36
Main heading:Mineralogy
Controlled terms:Boolean functions - Byproducts - Carbon dioxide - Conservation - Current
density - Degradation - Electrochemical electrodes - Electrochemical oxidation -
Electrodes - Electrolysis - Nitrogen - Polycyclic aromatic hydrocarbons
Uncontrolled terms:Boron-doped diamond anodes - Carbon conservations - Indole -
Mineralization - Nitrogen form
Classification code:482 Mineralogy - 701.1 Electricity: Basic Concepts and Phenomena -
721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory,
Programming Theory - 802.2 Chemical Reactions - 804 Chemical Products Generally
Numerical data indexing:Current_Density 3.00e+02A/m2, Time 1.44e+04s, Time 1.44e+04s to
1.80e+04s, Time 1.80e+04s, Time 2.88e+04s
DOI:10.13227/j.hjkx.201702028
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 39>
Accession number:20175004524898
Title:Construction of Graphitic Carbon Nitride-Bismuth Oxyiodide Layered Heterostructures
and Their Photocatalytic Antibacterial Performance
Authors:Huang, Jian-Hui (1, 2); Lin, Wen-Ting (2); Xie, Li-Yan (1, 2, 3); Chen, Jian-Qin
(1, 2, 3)
Author affiliation:(1) Fujian Provincial Key Laboratory of Ecology-Toxicological Effects
& Control for Emerging Contaminants, Putian; 351100, China; (2) College of
Environmental & Biological Engineering, Putian University, Putian; 351100, China; (3)
Key Laboratory of Ecological Environment and Information Atlas, Fujian Provincial
University, Putian; 351100, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3979-3986
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The thin layered graphitic carbon nitride (g-C<inf>3</inf>N<inf>4</inf>) was
prepared by the thermal polymerization process with urea as the precursor. The layered
heterostructure of graphitic carbon nitride-bismuth oxyiodide (g-
C<inf>3</inf>N<inf>4</inf>/BiOI) was constructed by the in-situ synthetization of bismuth
oxyiodide (BiOI) on the surface of the thin layered g-C<inf>3</inf>N<inf>4</inf>. The
morphology, specific surface area, crystal structure, molecular structure, light
absorption properties, and surface properties were characterized by TEM, BET, XRD, FT-IR,
UV-Vis DRS, and XPS, respectively. The disinfection performance of the synthesized
catalysts under visible light irradiation was investigated. The antibacterial mechanism
of g-C<inf>3</inf>N<inf>4</inf>/BiOI in the photocatalytic process was further revealed
by the capture of sacrificial agents. The results indicate that the prepared sample has a
layered heterojunction structure with a specific surface area of 63
m<sup>2</sup>·g<sup>-1</sup>and its light absorption side can obtain 600 nm. The
results of the photocatalytic activity test indicate that g-
C<inf>3</inf>N<inf>4</inf>/BiOI can kill bacteria within 4 h, which is significantly
higher than that of g-C<inf>3</inf>N<inf>4</inf>and BiOI. The main active species of g-
C<inf>3</inf>N<inf>4</inf>/BiOI in the photocatalytic process can be attributed to the
photogenerated holes.<br/> © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Carbon nitride
Controlled terms:Bismuth - Bismuth compounds - Crystal structure - Electromagnetic wave
absorption - Heterojunctions - Light - Light absorption - Nitrides - Nitrogen compounds -
Photocatalysis - Specific surface area - Surface properties - Urea
Uncontrolled terms:Anti-bacterial performance - Antibacterial - Antibacterial mechanisms
- Bismuth iodide - Graphitic carbon nitrides - Heterojunction structures - Photocatalytic
activities - Visible-light irradiation
Classification code:549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline
Earth Metals - 711 Electromagnetic Waves - 714.2 Semiconductor Devices and Integrated
Circuits - 741.1 Light/Optics - 804.1 Organic Compounds - 804.2 Inorganic Compounds -
933.1.1 Crystal Lattice - 951 Materials Science
Numerical data indexing:Size 6.00e-07m, Specific_Surface_Area 6.30e+04m2/kg, Time 1.44e
+04s
DOI:10.13227/j.hjkx.201702014
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 40>
Accession number:20175004525217
Title:Enhanced Treatment of Printing and Dyeing Wastewater Using
H<inf>2</inf>O<inf>2</inf>-Biochemical Method
Authors:Yue, Xiu (1); Tang, Jia-Li (1); Yu, Guang-Ping (1); Ji, Shi-Ming (1); Liu, Zhu-
Han (1)
Author affiliation:(1) Shenyang Institute of Automation in Guangzhou, Chinese Academy of
Sciences, Guangzhou; 511458, China
Corresponding author:Yu, Guang-Ping(ygping@sia.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3769-3780
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The traditional biochemical treatment of printing and dyeing wastewater has
limited efficiency. This study investigated whether H<inf>2</inf>O<inf>2</inf>could
strengthen the biological ability of the hydrolytic acidification/biological contact
oxidation process (A/O), which effectively treats the printing and dyeing wastewater.
After biofilm formation and the biochemical system startup and operation by
H<inf>2</inf>O<inf>2</inf>, the system was successfully started and steadily operated
when H<inf>2</inf>O<inf>2</inf>was added into reactor A with the
H<inf>2</inf>O<inf>2</inf>voluve fraction of 3 mL·L<sup>-1</sup>, doses of 100.0
mL, the flow velocity of 0.67 mL·min<sup>-1</sup>, and dosing frequency of once a
day. The experimental results showed that the average removal efficiencies of COD,
ammonia nitrogen, PVA, and color of printing and dyeing wastewater were 89.8%, 96.7%,
87.4%, and 92.1%, respectively. The microorganism community structures of reactor A and
reactor O in this system were analyzed by high-throughput sequencing of 16S rDNA
amplicon. The results demonstrated that the three dominant microbial strains in reactor A
were Proteobacteria, Bacteroidetes, and Verrucomicrobia, and in reactor O were
Planctomycetes, Proteobacteria, and Acidobacteria.<br/> © 2017, Science Press. All
right reserved.
Number of references:31
Main heading:Wastewater treatment
Controlled terms:Acidification - Biochemistry - Chemical oxygen demand - Color removal
(water treatment) - Dyeing - Efficiency - Flow velocity - Microorganisms - Nitrogen
removal - Printing - Social sciences
Uncontrolled terms:16s rDNA sequencing - Biological contact oxidation - Community
structures - H2O2 - Hydrolytic acidification - Printing and dyeing wastewaters
Classification code:445.1 Water Treatment Techniques - 452.4 Industrial Wastes
Treatment and Disposal - 461.9 Biology - 631 Fluid Flow - 745.1 Printing - 801.2
Biochemistry - 822.2 Food Processing Operations - 913.1 Production Engineering - 971
Social Sciences
Numerical data indexing:Percentage 8.74e+01%, Percentage 8.98e+01%, Percentage 9.21e+01%,
Percentage 9.67e+01%, Volume 1.00e-04m3
DOI:10.13227/j.hjkx.201702046
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 41>
Accession number:20175004525202
Title:Remote Sensing of Chlorophyll-a Concentrations in Lake Hongze Using Long Time
Series MERIS Observations
Authors:Liu, Ge (1); Li, Yun-Mei (1, 2); Lü, Heng (1); Mu, Meng (1); Lei, Shao-Hua
(1); Wen, Shuang (1); Bi, Shun (1); Ding, Xiao-Lei (1)
Author affiliation:(1) Key Laboratory of Virtual Geographic Environment, Ministry of
Education, Nanjing Normal University, Nanjing; 210023, China; (2) Jiangsu Center for
Collaboration Innovation in Geographical Information Resource Development and
Application, Nanjing; 210023, China
Corresponding author:Li, Yun-Mei(liyunmei@njnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3645-3656
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Chlorophyll-a (Chl-a) concentrations are usually measured as the proxy of
phytoplankton biomass and used to evaluate the trophic status of inland waters. Based on
49 in situ samples taken from two measurement campaigns in Lake Hongze in 2016, we
evaluate the performance of five Chl-a estimation algorithms (including the band ratio,
three-band, FLH algorithm, MCI, and UMOC algorithms). The results showed that the UMOC
model was the most suitable model for the estimation of Chl-a in Lake Hongze. The mean
relative error (MRE) of UMOC was 32.30%, much lower than the band ratio algorithm
(75.17%), three-band algorithm (62.44%), FLH algorithm (45.87%), and MCI algorithm
(56.95%). The best-performing UMOC model was applied to the atmospherically corrected 689
MERIS images between 2002-2012 and long time series MERIS Chl-a concentration estimation
products were acquired. Between 2002 and 2012, the mean Chl-a concentration in Lake
Hongze was 19.560 mg·m<sup>-3</sup>with substantial spatial and temporal
variability. Based on the variability of monthly mean Chl-a concentrations in each pixel,
the Lake Hongze waterbody was divided into three water types, Region A, Region B, and
Region C. The annual mean Chl-a concentrations of Region B and Region C showed no
significant changes, while the concentrations in Region A increased markedly. The
analysis of the meteorological factors showed that the fluctuations of the annual mean
Chl-a concentrations in Region B and Region C were mainly affected by annual
precipitation, suggesting that the Chl-a concentrations of these two regions are
dominated by the intensity of the lake flow. The annual mean Chl-a concentrations of
Region A showed a strong negative correlation with the annual mean wind speed. The
descending trend of the annual wind speed may enhance the eutrophication degree of this
region, threatening the safety of the water quality of the South-North Water Transfer
Project. The Chl-a concentrations showed a strong positive correlation with the distance
from the Huaihe Estuary in the wet season suggesting that the Huaihe River has an obvious
inhibitory effect on algal biomass in Lake Hongze during this period.<br/> © 2017,
Science Press. All right reserved.
Number of references:25
Main heading:Lakes
Controlled terms:Atmospheric movements - Chlorophyll - Climate change - Eutrophication -
Remote sensing - River pollution - Time series - Water quality - Wind
Uncontrolled terms:Chlorophyll a - Chlorophyll-a concentration - Concentration
estimations - Huaihe river - MERIS - South-north water transfer projects - Spatial and
temporal variability - Spatial temporals
Classification code:443.1 Atmospheric Properties - 445.2 Water Analysis - 453 Water
Pollution - 804.1 Organic Compounds - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 3.23e+01%, Percentage 4.59e+01%, Percentage 5.70e+01%,
Percentage 6.24e+01%, Percentage 7.52e+01%
DOI:10.13227/j.hjkx.201702192
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 42>
Accession number:20175004525240
Title:Preparation of Adsorption Ceramsite Derived from Sludge Biochar
Authors:Li, Jie (1, 2); Pan, Lan-Jia (1, 2); Yu, Guang-Wei (1); Wang, Yin (1); You, Fu-
Tian (1, 2); Xie, Sheng-Yu (1, 2)
Author affiliation:(1) Key Laboratory of Urban Pollutant Conversion, Institute of Urban
Environment, Chinese Academy of Sciences, Xiamen; 361021, China; (2) University of
Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Yu, Guang-Wei(gwyu@iue.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3970-3978
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Adsorption ceramsite (SKC) was prepared with biochar (BC) derived from municipal
sludge and kaolin (KL) based on the optimized processing parameters to adsorb
ciprofloxacin (CIP) in aqueous solutions. The CIP adsorption mechanism of SKC was
investigated by adsorption kinetics and isotherm adsorption models, combined with the
analysis of microstructure, pore structure, phase composition, and zeta potential.
Furthermore, the heavy metal leaching toxicity was assessed using the toxicity
characteristic leaching procedure (TCLP) method. The results showed that SKC, with 60% BC
and 40% KL calcining at 1, 050℃ for 5 min, showed an outstanding removal efficiency
of CIP (65.34%). The pseudo-second-order equation agreed with the adsorption behavior and
the Freundlich model described the adsorption process well. The adsorption process was a
multilayer adsorption controlled by physical and chemical reactions. The leaching
concentration of heavy metals, trapped by the mineral phases in SKC was much lower than
that in BC, indicating low ecotoxicological risk. SKC possessed the ability to adsorb CIP
with its developed porosity and characteristic mineralogical phases, including silicon
aluminum oxide and iron oxide. This work provides a low-cost recyclable sorbing material
to remove high concentration CIP from wastewater and offers a new idea for the large-
scale safe use of BC.<br/> © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Adsorption
Controlled terms:Adsorption isotherms - Antibiotics - Desorption - Dyes - Enzyme kinetics
- Heavy metals - Iron oxides - Isotherms - Leaching - Solutions - Toxicity
Uncontrolled terms:Adsorption kinetics and isotherm - Bio chars - Ceramsite -
Ciprofloxacin - Ecotoxicological risks - Leaching concentrations - Pseudo-second-order
equations - Toxicity characteristic leaching procedures
Classification code:461.6 Medicine and Pharmacology - 461.7 Health Care - 531
Metallurgy and Metallography - 802.3 Chemical Operations - 803 Chemical Agents and
Basic Industrial Chemicals - 804.2 Inorganic Compounds
Numerical data indexing:Percentage 6.53e+01%, Time 3.00e+02s
DOI:10.13227/j.hjkx.201702161
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 43>
Accession number:20175004525196
Title:Distribution Characteristics of Air Pollutants and Aerosol Chemical Components
Under Different Weather Conditions in Jiaxing
Authors:Wang, Hong-Lei (1); Shen, Li-Juan (2); Tang, Qian (3); Lü, Sheng (2); Tian,
Xu-Dong (3); Li, Li (2); Zhang, Xiao-Han (2)
Author affiliation:(1) Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters, Key Laboratory for Aerosol-Cloud-Precipitation of China
Meteorological Administration, Nanjing University of Information Science &
Technology, Nanjing; 210044, China; (2) Jiaxing Environmental Monitoring Station,
Jiaxing; 314000, China; (3) Zhejiang Environmental Monitoring Center, Hangzhou; 310000,
China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3594-3604
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Distribution characteristics of air pollutants and aerosol chemical components
under different weather conditions were investigated in Jiaxing between May 1 and 31,
2015. The particulate matter (PM), gaseous pollutants, chemical components in
PM<inf>1.0</inf>, and aerosol number concentrations ranging from 10 nm to 10 μm were
measured using the SHARP-5030 monitoring instrument, Thermo EMS system, Aerodyne Aerosol
Chemical Speciation Monitor (ACSM), and Wide-Range Particle Spectrometer (WPS),
respectively. The average concentrations of PM<inf>2.5</inf>, PM<inf>1.0</inf>,
SO<inf>2</inf>, NO<inf>2</inf>, O<inf>3</inf>, and CO were 52.8 μg·m<sup>-
3</sup>, 37.2 μg·m<sup>-3</sup>, 10.3 μg·m<sup>-3</sup>, 38.1
μg·m<sup>-3</sup>, 92.1 μg·m<sup>-3</sup>, and 1.2 mg·m<sup>-
3</sup>during the observation period. The chemical components of OA,
SO<inf>4</inf><sup>2-</sup>, NO<inf>3</inf><sup>-</sup>, NH<inf>4</inf><sup>+</sup>, and
Cl<sup>-</sup>in PM<inf>1.0</inf>had average concentrations of 2.18, 1.24, 0.87, 0.63,
and 0.08 μg·m<sup>-3</sup>, respectively. The aerosol number concentrations
were mainly centralized in Aitken mode (20-100 nm), with a value of 12 411.2 cm<sup>-
3</sup>. The nuclei mode aerosols (10-20 nm) followed the number concentrations with 4
946.6 cm<sup>-3</sup>. The concentration distributions and diurnal variations of PM and
gaseous pollutants, and the distributions of chemical components of
PM<inf>1.0</inf>varied under different weather conditions. The concentrations of chemical
components were ranked in the order of OA>SO<inf>4</inf><sup>2-</sup>>
NO<inf>3</inf><sup>-</sup>> NH<inf>4</inf><sup>+</sup>> Cl<sup>-</sup>on rainy days
and sunny days, and in the order of OA>NO<inf>3</inf><sup>-</sup>>
SO<inf>4</inf><sup>2-</sup>>NH<inf>4</inf><sup>+</sup>>Cl<sup>-</sup>on new
particle formation (NPF) days. The OA and NO<inf>3</inf><sup>-</sup>concentrations on NPF
days were 1.61 and 1.42 times larger than those on sunny days, suggesting that the
components of OA and NO<inf>3</inf><sup>-</sup>were the main substances influencing the
NPF events. Additionally, the diurnal variations of aerosols in different modes varied
under different types of weather conditions.<br/> © 2017, Science Press. All right
reserved.
Number of references:44
Main heading:Air pollution
Controlled terms:Aerosols - Chemical speciation - Chlorine - Chlorine compounds - Fog -
Meteorology - Particles (particulate matter) - Pollution
Uncontrolled terms:Aerosol chemical components - Chemical component - Concentration
distributions - Distribution characteristics - Diurnal variation - Gaseous pollutants -
New particle formation - Number concentration
Classification code:443.1 Atmospheric Properties - 451 Air Pollution - 802.2 Chemical
Reactions - 804 Chemical Products Generally - 951 Materials Science
Numerical data indexing:Size 1.00e-08m to 1.00e-05m, Size 1.00e-08m to 2.00e-08m, Size
2.00e-08m to 1.00e-07m
DOI:10.13227/j.hjkx.201702093
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 44>
Accession number:20175004525239
Title:External Phosphorus Adsorption and Immobility with the Addition of Ignited Water
Purification Sludge
Authors:Yu, Sheng-Nan (1); Li, Yong (1); Li, Da-Peng (1); Huang, Yong (1)
Author affiliation:(1) School of Environmental Science and Engineering, University of
Science and Technology of Suzhou, Suzhou; 215009, China
Corresponding author:Li, Da-Peng(ustsldp@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3962-3969
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The cumulative adsorption of external phosphorus (P) by water purification
sludge after ignition under different addition methods (mix and cover) was investigated
along with the adsorption isotherm and the release of internal P after external P
adsorption. The cumulative adsorption of external P was 11.496 mg (mix) and 11.042 mg
(cover) and these values were higher than those in the control (7.219 mg). The maximum
sorption capacity (S<inf>max</inf>) increased under the mix and cover and the former
(7.795 mg·g<sup>-1</sup>) was higher than the latter (6.807 mg·g<sup>-
1</sup>). However, the zero equilibrium P concentration (EPC<inf>0</inf>) in the mix was
0.83 mg·L<sup>-1</sup>, higher that in the cover (0.64 mg·L<sup>-1</sup>).
The result suggests that the internal P was easily released in the mix method, compared
to the cover method. Under anaerobic conditions, the release of the internal P was 0.93
mg in the mix, lower than that in the cover (1.49 mg) and in the control (7.76 mg). In
addition, the specific release rate in the cover method was 0.006 14 (mean), higher than
that (0.003 96) in the mix method. Noticeably, these data were lower than those in the
control, indicating that the retention of P under the mix method was higher, compared to
the cover and the control and it is challenging to evaluate the P retention with
EPC<inf>0</inf>.<br/> © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Adsorption
Controlled terms:Ignition - Mixing - Phosphorus - Purification - Water treatment plants
Uncontrolled terms:Addition method - Anaerobic - Anaerobic conditions - Cover -
Isothermal adsorption - Phosphorus adsorption - Sorption capacities - Water purification
Classification code:445.1 Water Treatment Techniques - 521.1 Fuel Combustion - 802.3
Chemical Operations - 804 Chemical Products Generally
Numerical data indexing:Mass 1.10e-05kg, Mass 1.15e-05kg, Mass 1.49e-06kg, Mass 7.22e-
06kg, Mass 7.76e-06kg, Mass 9.30e-07kg, Mass_Density 6.40e-04kg/m3, Mass_Density 8.30e-
04kg/m3
DOI:10.13227/j.hjkx.201612271
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 45>
Accession number:20175004525200
Title:Influence of Noble Metal and Promoter Capacity in CDPF on Particulate Matter
Emissions of Diesel Bus
Authors:Tan, Pi-Qiang (1); Zhong, Yi-Mei (1); Zheng, Yuan-Fei (1); Lou, Di-Ming (1); Hu,
Zhi-Yuan (1)
Author affiliation:(1) School of Automotive Studies, Tongji University, Shanghai; 201804,
China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3628-3634
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:This study investigates the influence of noble metal capacity and promoter
capacity in diesel oxidation catalysts (DOC) and catalyzed diesel particulate filters
(CDPF) on particulate matter (PM) emissions. Four types of exhaust aftertreatments were
applied to a diesel bus engine that meets the national III emissions regulations. On-
board tests were conducted respectively. PM emissions from the engine were strongly
influenced by noble metal capacity in DOC and CDPF, especially at high speeds (the total
number of particles increased by 70.8% when the noble metal capacity decreased by 5
g·ft<sup>-3</sup>at 60 km·h<sup>-1</sup>). The higher the noble metal
capacity was, the lower the PM emissions became, especially for PM in nuclei mode. The
lanthanide material contributed to reducing PM emissions significantly. The content of
precious metals could be reduced by 25% with proper lanthanide material, while the
treatment effect of exhaust particles was guaranteed. In summary, aftertreatments are not
sensitive to accelerating conditions, but the purification efficiency is obviously
different under decontamination conditions.<br/> © 2017, Science Press. All right
reserved.
Number of references:24
Main heading:Particulate emissions
Controlled terms:Air filters - Catalysis - Diesel engines - Engines - Filters (for
fluids) - Fuel filters - Metals - Precious metals - Rare earth elements
Uncontrolled terms:Capacity - Catalyzed diesel particulate filters - Diesel oxidation
catalyst - Emissions regulations - Particulate matter emissions - Promoter - Purification
efficiency - Treatment effects
Classification code:451.1 Air Pollution Sources - 451.2 Air Pollution Control - 547.1
Precious Metals - 547.2 Rare Earth Metals - 612.2 Diesel Engines - 802.2 Chemical
Reactions
Numerical data indexing:Percentage 2.50e+01%, Percentage 7.08e+01%, Velocity 1.67e+01m/s
DOI:10.13227/j.hjkx.201701055
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 46>
Accession number:20175004525233
Title:Concentrations and Health Risk Assessment of Polycyclic Aromatic Hydrocarbons
(PAHs) in Soils and Vegetables influenced by Facility Cultivation
Authors:Jin, Xiao-Pei (1); Jia, Jin-Pu (1); Bi, Chun-Juan (1); Wang, Xue-Ping (1); Guo,
Xue (1); Chen, Zhen-Lou (1); Qiu, Xin-Lian (1)
Author affiliation:(1) Key Laboratory of Geographic Information Science (Ministry of
Education), School of Geographic Sciences, East China Normal University, Shanghai;
200241, China
Corresponding author:Bi, Chun-Juan(cjbi@geo.ecnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3907-3914
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The concentrations, sources, and health risks of 16 United States Environmental
Protcction Agency(USEPA) priority polycyclic aromatic hydrocarbons (PAHs) in vegetables
(leafy lettuce, amaranth, water spinach, and Shanghai green), in soils inside and outside
the vegetable greenhouse, and in wet deposition were investigated by conducting an
experiment on facility cultivation. The results showed that the average concentrations of
total PAHs in vegetables and soils were 99.27 ng·g<sup>-1</sup>and 128.01
ng·g<sup>-1</sup>in the greenhouse, and 109.11 ng·g<sup>-1</sup>and 173.07
ng·g<sup>-1</sup>out of the greenhouse. The concentrations of PAHs in the
greenhouse were lower than those outside and the high ring-PAHs were lower than the low
ring-PAHs both inside and outside. The PAH concentrations in suspended particular matter
in dissolved phases of wet deposition were 2 986.49 ng·g<sup>-1</sup>and 61.9
ng·L<sup>-1</sup>, respectively. The low rings were easily enriched by the
vegetables based on the shoot concentration factors. PAHs in soils and vegetables mainly
originated from oil emissions and grass, wood, and coal combustion, while those in
suspended particular matter in wet deposition were from petrogenic sources and the
combustion of grass, wood, and coal. Petroleum combustion emissions were the main sources
of PAHs in dissolved phases. We used the model of incremental lifetime cancer risks to
evaluate the health risk of eating these vegetables. There was a potential risk of cancer
for both children and adults for all vegetables except amaranth. The carcinogenic risk of
vegetables outside the greenhouse was higher than the risk inside. Amaranth had a low
carcinogenic risk with the value of incremental lifetime cancer risk lower than 10<sup>-
6</sup>, while the risk of Shanghai green ranged between 10<sup>-4</sup>and 10<sup>-
6</sup>.<br/> © 2017, Science Press. All right reserved.
Number of references:39
Main heading:Polycyclic aromatic hydrocarbons
Controlled terms:Aromatic compounds - Aromatic hydrocarbons - Aromatization - Coal
combustion - Deposition - Diseases - Greenhouses - Health - Health risks - Hydrocarbons
- Risk assessment - Soil pollution - Soils - Vegetables
Uncontrolled terms:Average concentration - Concentration factors - Petrogenic sources -
Petroleum combustion - Polycyclic aromatic hydrocarbons (PAHS) - Source - Suspended
particular matters - Vegetable greenhouse
Classification code:461.6 Medicine and Pharmacology - 461.7 Health Care - 483.1 Soils
and Soil Mechanics - 521 Fuel Combustion and Flame Research - 524 Solid Fuels - 802.2
Chemical Reactions - 802.3 Chemical Operations - 804.1 Organic Compounds - 821.4
Agricultural Products - 821.6 Farm Buildings and Other Structures - 914.1 Accidents and
Accident Prevention
Numerical data indexing:Mass_Density 6.19e-08kg/m3
DOI:10.13227/j.hjkx.201702094
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 47>
Accession number:20175004525220
Title:Activated Sludge Mineralization and Solutions in the Process of Zero-Valent Iron
Autotrophic Denitrification
Authors:Zhang, Ning-Bo (1, 2); Li, Xiang (1, 2); Huang, Yong (1, 2); Zhang, Wen-Jing (1,
2)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Instatute of Environmental
Biotechnology, Suzhou University of Science and Technology, Suzhou; 215009, China
Corresponding author:Huang, Yong(yhuang@mail.usts.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3793-3800
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:We studied the inoculation of activated sludge from domestic sewage treatment
plants. The reaction of reducing nitrate by zero-valent iron was started in the up-flow
anaerobic reactor. After 52 d of operation, a nitrogen removal rate of 29.3 g·
(m<sup>3</sup>·d)<sup>-1</sup>was achieved. Ferric iron and iron oxide coated on
the sludge formed in the operation process caused the mineralization and slowly decreased
the sludge activity. The methods of the “supplement and replacement of the sludge
in the reactor” and “changing the reflux mode of the reactor” were
applied. Using the method of the supplement and replacement of the sludge in the reactor,
by discharging a part of the sludge in the reactor and adding the extra dosage from the
anaerobic denitrifying sludge for the treatment of wastewater, after 22 d of operation,
the conversion rate of nitrate-nitrogen was 33.0 g·(m<sup>3</sup>·d)<sup>-
1</sup>and the concentration of nitrite-nitrogen was 16.50 mg·L<sup>-1</sup>. The
effluent average concentration of ammonia-nitrogen decreased from 12.38
mg·L<sup>-1</sup>to 3.58 mg·L<sup>-1</sup>and the nitrogen removal rate was
recovered from 9.9 g·(m<sup>3</sup>·d)<sup>-1</sup>to 15.0 g·
(m<sup>3</sup>·d)<sup>-1</sup>. The biological reaction weakened the chemical
reduction of nitrate by zero-valent iron. Using the method of changing the reflux mode of
the reactor, the reflux tank was arranged outside the reaction column using hydraulic
circulation. The increase in the erosion of the upper layer of the sedimentation tank
would bring out ferric iron and iron oxide with the outflow water and they would be
deposited in the reflux tank. The corresponding ferric iron of transformation of nitrate
settled in the external reflux tank was 58% at the ascending velocity of 3.49
m·h<sup>-1</sup>. The nitrate-nitrogen conversion rate was 34.3 g·
(m<sup>3</sup>·d)<sup>-1</sup>, the effluent concentration of nitrite-nitrogen was
0.22 mg·L<sup>-1</sup>, and ammonia-nitrogen was 0.75 mg·L<sup>-1</sup>.
Ammonia and nitrite did not extensively accumulate. The nitrogen removal rate was 33.4
g·(m<sup>3</sup>·d)<sup>-1</sup>, which solved the problem of the
mineralized sludge in the long-term reactor operation. In summary, the method of
reforming the reflux mode of the reactor performed better than the method of the
supplement and replacement of sludge in the reactor.<br/> © 2017, Science Press. All
right reserved.
Number of references:26
Main heading:Nitrogen removal
Controlled terms:Activated sludge process - Ammonia - Denitrification - Effluents - Iron
- Iron oxides - Mineralogy - Nitrates - Nitrogen - Reforming reactions - Sewage - Sewage
treatment plants - Tanks (containers) - Wastewater treatment
Uncontrolled terms:Activated sludge - Adding reflux - Anaerobic reactor - Autotrophic
denitrification - Sludge addition
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal -
482 Mineralogy - 545.1 Iron - 619.2 Tanks - 802.2 Chemical Reactions - 804 Chemical
Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 1.24e-02kg/m3 to 3.58e-03kg/m3, Mass_Density 1.65e-
02kg/m3, Mass_Density 2.20e-04kg/m3, Mass_Density 7.50e-04kg/m3, Percentage 5.80e+01%
DOI:10.13227/j.hjkx.201703032
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 48>
Accession number:20175004525206
Title:Distribution of n-alkanes from Lake Wanghu Sediments in Relation to Environmental
Changes
Authors:Shen, Bei-Bei (1, 2); Wu, Jing-Lu (1); Zeng, Hai-Ao (1); Zhang, Yong-Dong (1);
Jin, Miao (1)
Author affiliation:(1) State Key Laboratory of Lake and Environmental Sciences, Nanjing
Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing; 210008,
China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3682-3688
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Concentrations and distribution of n-alkanes (n-C<inf>14</inf>to n-
C<inf>33</inf>) in Lake Wanghu sediment core were analyzed to investigate the
environmental changes in the lake during the past~100 years. Relatively higher
concentrations of mid- and long-chain n-alkanes with a strong odd-over-even carbon number
predominance indicated organic matter contributions dominated by aquatic macrophytes and
terrestrial plants. The lower values of 2n-C<inf>31</inf>/(n-C<inf>27</inf>+n-
C<inf>29</inf>) highlighted a type of landscape dominated by woody plants. The
environmental changes that have been happening over the past 100 years in Lake Wanghu can
be divided into three stages, based on the organic matter sources inferred from the
changes in n-alkane parameters in the sediments. Before the 1950s, higher values of
terrigenous/aquatic ratio (TAR) and high-/low-molecular weight n-alkanes (H/L) indicated
vascular, plant-derived sediments deposited during a low-nutrient, clear-water phase with
frequent water exchange between the lake and the Yangtze River. Between the 1950s and
1980s, decrease in values of H/L and TAR, and increase in the proportion of mid- and
short-chain n-alkanes indicated a shift towards mid- and shorter-chain components likely
associated with the increasing contribution of macrophytes and algae. Lower 2n-
C<inf>17</inf>/(n-C<inf>23</inf>+n-C<inf>25</inf>) values indicated a relatively low
algal abundance. In that stage, the lake trophic state increased slightly with the
decreasing influence of the Yangtze River flow. After the 1980s, H/L and TAR values
increased and then decreased, total n-alkane concentrations and 2n-C<inf>17</inf>/(n-
C<inf>23</inf>+n-C<inf>25</inf>) increased significantly, especially after 2000s,
suggesting the main contributor to high organic matter input most likely shifted to algae
because of the eutrophication caused by anthropogenic activities.<br/> © 2017,
Science Press. All right reserved.
Number of references:32
Main heading:Paraffins
Controlled terms:Algae - Biogeochemistry - Biological materials - Carbon - Chains -
Eutrophication - Lakes - Organic compounds - Plants (botany) - River pollution - Rivers
- Sediments - Tar
Uncontrolled terms:Environmental change - n-Alkanes - Organic matter source - Sediment
core - Yangtze River
Classification code:453 Water Pollution - 461.2 Biological Materials and Tissue
Engineering - 481.2 Geochemistry - 483 Soil Mechanics and Foundations - 602.1
Mechanical Drives - 804 Chemical Products Generally - 804.1 Organic Compounds
Numerical data indexing:Age 1.00e+02yr
DOI:10.13227/j.hjkx.201702062
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 49>
Accession number:20175004525210
Title:Correlations Between Substrate Structure and Microbial Community in Subsurface Flow
Constructed Wetlands
Authors:Li, Zhen-Ling (1); Ding, Yan-Li (1); Bai, Shao-Yuan (1, 2); Li, Xue-Fen (1, 2);
You, Shao-Hong (1, 2); Xie, Qing-Lin (1, 2)
Author affiliation:(1) Guangxi Scientific Experiment Center of Mining, Metallurgy and
Environment, Guilin University of Technology, Guilin; 541004, China; (2) Guangxi Key
Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of
Technology, Guilin; 541004, China
Corresponding author:Ding, Yan-Li(dyl@glut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3713-3720
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To identify the microbial factors that cause the differences in the purification
performance of constructed wetlands with different substrate structures, the relationship
between the substrate structure and the microbial community composition in horizontal
subsurface flow constructed wetlands (HSSFCWs) was studied by high throughput sequencing.
The results revealed that the purification performance of a six-layer constructed wetland
(CW6), of which the permeability coefficient gradually increased from the surface layer
to the bottom layer, was the highest among the three constructed wetland systems. The
average concentrations of COD, TN, NO<inf>3</inf><sup>-</sup>-N, and NH<inf>4</inf><sup>
+</sup>-N in the effluent were 39, 11, 0.35, and 4 mg·L<sup>-1</sup>,
respectively. The monolayer structure constructed wetland (CW1) had the worst purifying
efficiency, with average effluent concentrations of 95, 21, 0.60 and 12
mg·L<sup>-1</sup>for COD, TN, NO<inf>3</inf><sup>-</sup>-N, and
NH<inf>4</inf><sup>+</sup>-N, respectively. The results of the high-throughput sequencing
showed that the number of microbial OTUs in multilayer structure wetlands was slightly
lower than that in the monolayer structure wetland, but the relative abundance of the
dominant phylum Proteobacteria and the nitrifying and denitrifying bacteria in the genus
was significantly higher than the monolayer structure wetland. The results of PCA and
heatmap indicated that there were significant differences in the spatial distribution of
microbes in the genus of Proteobacteria in CW3 and CW6, which facilitated the degradation
of pollutants. No significant differences were found in the community structure of
CW1.<br/> © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Wetlands
Controlled terms:Bacteria - Denitrification - Microorganisms - Monolayers - Purification
- Throughput
Uncontrolled terms:Constructed wetlands - High throughput - High-throughput sequencing -
Horizontal subsurface flow constructed wetlands - Microbial communities - Microbial
community composition - Substrate structure - Subsurface flow constructed wetlands
Classification code:461.9 Biology - 802.2 Chemical Reactions
Numerical data indexing:Mass_Density 1.20e-02kg/m3, Mass_Density 4.00e-03kg/m3,
Mass_Density 6.00e-04kg/m3
DOI:10.13227/j.hjkx.201701050
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 50>
Accession number:20175004525226
Title:Spatial Variability of C-to-N Ratio of Farmland Soil in Jiangxi Province
Authors:Jiang, Ye-Feng (1, 2); Guo, Xi (1, 2); Sun, Kai (1, 2); Rao, Lei (1, 2); Li, Jie
(1, 2); Wang, Lan-Ke (1, 2); Ye, Ying-Cong (2); Li, Wei-Feng (1, 2)
Author affiliation:(1) Academy of Land Resource and Environment, Jiangxi Agricultural
University, Nanchang; 330045, China; (2) Key Laboratory of Poyang Lake Watershed
Agricultural Resources and Ecology of Jiangxi Province, Nanchang; 330045, China
Corresponding author:Guo, Xi(xig435@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3840-3850
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Spatial variability of soil carbon-to-nitrogen ratio (C/N) at the provincial
scale was analyzed using ordinary kriging methods. The effects of the factors influencing
C/N were quantified by regression analysis based on 16, 582 points of surface soil
samples (0-20 cm) collected during the project of soil-test-based formulated
fertilization in Jiangxi Province in 2012. The results showed that soil C/N ranged from
2.98 to 52.67, with an average of 11.72. The coefficient of variation was 25.17%,
suggesting moderate variability. The nugget-to-sill ratio was 88.44%, meaning that the
stochastic factors played a more important role in the spatial variability of soil C/N
between the structural and stochastic factors. The spatial distribution of soil C/N was
relatively smooth and the high-value areas were mainly distributed in Pengze County-
Jiujiang City, Shangli County-Pingxiang City, and Lean County-Fuzhou City. The terrain
factors, farmland-use type, parent material, soil type, and the level of nitrogen
fertilizer had significant impacts on the spatial variability of soil C/N (P<0.05),
but the degree of influence was different for each factor. Soil C/N indicated a
significant positive Pearson's correlation with elevation and the slope of slope
(P<0.05). The terrain factors explained 0.3% of the spatial variability of soil C/N
and the farmland-use could explain 1.4%. The explanatory power of soil groups, subgroups,
and soil family were 2.7%, 3.6%, and 5.5% respectively. The level of nitrogen fertilizer
could explain 33.4% of the spatial variability of soil C/N, which showed that the amount
of nitrogen fertilizer was the main factor that controls the spatial distribution of soil
C/N.<br/> © 2017, Science Press. All right reserved.
Number of references:53
Main heading:Soil surveys
Controlled terms:Correlation methods - Farms - Fertilizers - Nitrogen - Nitrogen
fertilizers - Regression analysis - Soil testing - Soils - Spatial distribution -
Stochastic systems
Uncontrolled terms:Influencing factors - Jiangxi Province - Level of nitrogen fertilizer
- Soil carbon - Spatial variability
Classification code:483.1 Soils and Soil Mechanics - 804 Chemical Products Generally -
821 Agricultural Equipment and Methods; Vegetation and Pest Control - 921 Mathematics -
922.2 Mathematical Statistics - 961 Systems Science
Numerical data indexing:Percentage 1.40e+00%, Percentage 2.52e+01%, Percentage 2.70e+00%,
Percentage 3.00e-01%, Percentage 3.34e+01%, Percentage 3.60e+00%, Percentage 5.50e+00%,
Percentage 8.84e+01%, Size 0.00e+00m to 2.00e-01m
DOI:10.13227/j.hjkx.201702193
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 51>
Accession number:20175004525211
Title:Impact of Talc Ore Mining on Periphyton Community Structure and Water Environment
Authors:Zang, Xiao-Miao (1, 2); Zhang, Yuan (2); Lin, Jia-Ning (2); Wang, Shu-Ping (2);
Gao, Xin (2); Zhao, Qian (2, 3); Wang, Jing-Qi (1, 2)
Author affiliation:(1) College of Environmental Sciences, Liaoning University, Shenyang;
110036, China; (2) Laboratory of Riverine Ecological Conservation and Technology, Chinese
Research Academy of Environmental Sciences, Beijing; 100012, China; (3) College of Water
Science, Beijing Normal University, Beijing; 100875, China
Corresponding author:Lin, Jia-Ning(linjn@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:9
Issue date:September 15, 2017
Publication year:2017
Pages:3721-3730
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to explore the impact of Talc ore mining on aquatic ecosystems,
periphyton communities and environmental factors from control portion, impacted portion
and recovery portion separately were investigated and analyzed. Samples were collected
from upstream Tanghe River (an important tributary of Tazi River) in November 2015, April
2016, and July 2016. Mann-Whitney U test was applied to compare the differences in
environmental factors and periphyton community structures among three portions. Spearman
correlation analysis, canonical correspondence analysis, and t-value biplot analysis were
used to determine the relationship between the environmental factors and periphyton
community structures. In the control and recovery portions, mass concentrations of
magnesium (Mg), selenium (Se), arsenic (As), iron (Fe), molybdenum (Mo), bicarbonate ion
(HCO<inf>3</inf><sup>-</sup>), nitrate ion (NO<inf>3</inf><sup>-</sup>), power of
hydrogen (pH) and electric conductivity (EC), were the highest, and in the impacted
portion, mass concentrations of potassium(K), sodium (Na), strontium (Sr), barium (Ba),
silicon dioxide (SiO<inf>2</inf>), and dissolved oxygen (DO) were the lowest. The mass
concentrations of Mg, Mo, As, EC, and HCO<inf>3</inf><sup>-</sup>were significantly
different (P<0.05) among the three portions. In control and recovery portions, the
periphyton density, species richness, diatom siltation index, and relative abundance of
Achnanthes sp. were the highest, while in the impacted portion, the percentage of handle
diatom, the relative abundance of Surirella sp., and relative abundance of Navicula sp.
were the lowest. Species richness of periphyton was significantly different (P<0.05)
among the three portions. In summary, Mg, EC, and HCO<inf>3</inf><sup>-</sup>from Talc
Ore mining had significant impacts on periphyton assemblage structure.<br/> © 2017,
Science Press. All right reserved.
Number of references:28
Main heading:Ore analysis
Controlled terms:Aquatic ecosystems - Aquatic organisms - Dissolved oxygen - Factor
analysis - Metal recovery - Ores - Recovery - Silica - Silicon oxides - Social sciences
- Sodium bicarbonate - Talc
Uncontrolled terms:Canonical Correspondence Analysis - Environmental factors - Ore mining
- Periphyton community - T value biplot
Classification code:454.3 Ecology and Ecosystems - 471 Marine Science and Oceanography
- 482.2 Minerals - 801 Chemistry - 804 Chemical Products Generally - 922.2
Mathematical Statistics - 971 Social Sciences
DOI:10.13227/j.hjkx.201701124
<RECORD 1>
Accession number:20174904509411
Title:Preparation of Ag-AgI/CN/MA Composites and Their Visible-light Photocatalytic
Performance
Authors:Zhang, Sai (1, 2); Zhang, Li-Li (1); Hu, Chun (1, 2)
Author affiliation:(1) State Key Laboratory of Environmental Aquatic Chemistry, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085,
China; (2) College of Resources and Environment, University of Chinese Academy of
Sciences, Beijing; 100049, China
Corresponding author:Hu, Chun(huchun@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4245-4252
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Ag-AgI/CN/MA photocatalysts were prepared by coupling graphitic carbon nitride
(CN) with AgI/γ-Al<inf>2</inf>O<inf>3</inf>(AgI/MA) through a thermal
polymerization method and Ag nanoparticles were deposited by photoreduction. The
catalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy
(XPS), field emission scanning electron microscopy (FESEM), UV-vis diffuse reflectance
spectra (UV-vis DRS), and transmission electron microscopy (TEM). The photocatalytic
performance of different catalysts was evaluated under visible light irradiation
(λ>420 nm). The effects of different conditions such as pH and catalyst dosage
on photoreactions were also investigated. The results showed that Ag<sup>+</sup>and
Ag<sup>0</sup>coexisted on the surface of the catalyst and Ag and AgI nanoparticles were
uniformly distributed on the surface of CN. Compared with CN and Ag-AgI/MA, Ag-AgI/CN/MA
composites exhibited better visible-light photocatalytic activity and stability, and the
release of silver ions was significantly suppressed. At the catalyst dosage of 1
g·L<sup>-1</sup>and pH=7, Ag-AgI/CN/MA-2 exhibited the optimal photocatalytic
performance. Ag-AgI/CN/MA-2 also showed high photoactivity for the degradation of dyes
with different charges, such as rhodamine B (RhB), methyl red (MR) and congo red
(CR).<br/> © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Silver
Controlled terms:Aluminum compounds - Azo dyes - Carbon - Catalysts - Dyes - Electron
microscopy - Field emission microscopes - High resolution transmission electron
microscopy - Light - Metal ions - Nanoparticles - Photocatalysts - Photodegradation -
Photoelectron spectroscopy - Scanning electron microscopy - Silver halides - Transmission
electron microscopy - X ray diffraction - X ray photoelectron spectroscopy
Uncontrolled terms:Field emission scanning electron microscopy - Graphitic carbon
nitrides - Photocatalytic performance - Thermal polymerizations - UV-vis diffuse
reflectance spectra - Visible light - Visible light photocatalytic activity - Visible-
light irradiation
Classification code:531.1 Metallurgy - 547.1 Precious Metals - 741.1 Light/Optics -
741.3 Optical Devices and Systems - 761 Nanotechnology - 803 Chemical Agents and Basic
Industrial Chemicals - 804 Chemical Products Generally - 933 Solid State Physics
DOI:10.13227/j.hjkx.201703055
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 2>
Accession number:20174904509406
Title:Seasonal Distribution, Composition, and Source Apportionment of Polycyclic Aromatic
Hydrocarbons and Organochlorine Pesticides in the Main Stream of the Luanhe River
Authors:Wang, Yi-Zhen (1, 2); Zhang, Shi-Lu (1); Kong, Fan-Qing (1); Yuan, Yuan (3)
Author affiliation:(1) Haihe River Water Environmental Monitoring Center, Tianjin;
300170, China; (2) Key Laboratory of Pollution Processes and Environmental Criteria
(Nankai University), Ministry of Education, Tianjin; 300071, China; (3) Haihe River Water
Conservancy Commission, Ministry of Water Resources, Tianjin; 300170, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4194-4211
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Occurrence of 17 polycyclic aromatic hydrocarbons (PAHs) and 15 persistent
organochlorine pesticides (OCPs) were analyzed by gas chromatography coupled to tandem
mass spectrometry (GC/MS/MS) during the spring and summer of 2015 in surface water at 14
sampling sites in the mainstream of the Luanhe River to elucidate their seasonal
distribution, composition, and potential sources. Results showed that total PAH
concentrations in the surface water of the Luanhe River ranged from 33.33
ng·L<sup>-1</sup>to 90.65 ng·L<sup>-1</sup>(52.64 ng·L<sup>-
1</sup>in average) in spring and 147.68 ng·L<sup>-1</sup>to 252.68
ng·L<sup>-1</sup>(169.88 ng·L<sup>-1</sup>in average) in summer,
respectively, and total concentrations of OCPs ranged from <0.08 ng·L<sup>-
1</sup>to 3.48 ng·L<sup>-1</sup>(1.19 ng·L<sup>-1</sup>in average) in
spring and <0.08 to 5.47 ng·L<sup>-1</sup>(1.02 ng·L<sup>-1</sup>in
average) in summer, respectively. Seasonal pollution characteristics of PAHs in surface
water during two different seasons showed that total PAH concentrations were much higher
in summer than in spring at each sampling site on the Luanhe River. While seasonal
pollution characteristics of OCPs showed that total OCP concentrations were much lower in
spring than in summer at six sites including Luanxian, Daheiting reservoir dam, Panjiakou
Village, Guojiatun, Qujiawan, and Baichengzi, and were higher in spring than in summer at
the remaining eight sites. From the perspective of spatial and temporal variations in the
composition patterns of PAHs and OCPs in surface water of the Luanhe River, the low and
middle ring species of PAHs were dominant in spring and summer and the proportion of PAHs
with different rings showed significant differences. Three-ring PAHs dominated the
samples with 51.18% and 67.55% (61.39% on average) of total PAHs in spring, and four-ring
and two-ring PAHs accounted for 11.78%-33.94% (20.97% on average) and 13.31%-27.12%
(16.94% on average), respectively. In the summer, In the summer, naphthalene(Nap) was the
main component of total PAHs at each sampling site and PAHs were predominated by two-ring
compounds with 77.08% and 90.62% (83.34% on average) of the total, and by three-ring and
four-ring compounds with 7.09%-15.22% (12.40% on average) and 2.23%-7.49% (3.97% on
average), respectively. Only the residues of hexachlorocyclohexanes(HCHs) and
dichlorodiphenyltrichloroethanes(DDTs) were detected in surface water of the Luanhe River
at different degrees and HCHs were the dominant compounds. β-HCH was the main
pollutant at most sampling sites with 43.78% and 70.09% (56.25% on average) of total HCHs
in the spring and with 53.63% and 64.31% (58.37% on average) in the summer. α-HCH
and γ-HCH were abundant at other sampling sites. Source analysis based on the
isomer ratios indicated that PAHs in the Luanhe River mainly originated from combustion
sources and also likely from petroleum processes. Ratios of OCPs confirmed that
historical residues and long-range atmospheric transport were the major sources of HCHs
in the study area, and new sources of lindane or γ-HCH existed at Wulongji and
Sandaohezi in the spring and Daheting reservoir dam in the summer. Fresh inputs at the
Panjiakou reservoir dam, Sandaohezi, Waigoumenzi, Baichengzi, Zhenglanqi, and the
Shandianhe reservoir, and environmental residues at Jianggezhuang and Guojiatun were the
major sources of DDTs. Concentrations of single PAHs in surface water of the Luanhe River
did not exceed the water quality standards of China and other countries except that
chrysene(Chr) exceeded the United States national water quality standard. Individual PAHs
did not exceed any safety guidelines for aquatic organisms that are exposed to PAHs in
water but total concentrations of PAHs exceeded the threshold limits set by the United
States Environmental Protection Agency (EPA) and the European Union. This result
indicated that consuming fish and other aquatic animals might pose a potential threat to
human health due to the bioaccumulation of PAHs in aquatic organisms. The concentrations
of OCPs in surface water of the Luanhe River did not exceed any water quality standards
or the aquatic life threshold limits for freshwater developed by the EPA. However, the
concentrations of α-HCH at Jianggezhuang, Wulongji, Qujiawan, and Baichengziand
sites in the spring and at the Panjiakou reservoir dam, Panjiakou village, Qujiawan, and
Baichengzi sites in the summer, and concentrations of p,p'-DDD at the Shandianhe
reservoir and p,p'-DDE at Jianggezhuang, Sandaohezi, Guojiatun, and Shandianhe reservoir
in the spring exceeded the human health ambient water quality criteria limit developed by
the EPA. This result suggests that α-HCH, p,p'-DDE, and p,p'-DDD pose a potential
health risk to the residents who live near the sampling sites on the Luanhe River.<br/>
© 2017, Science Press. All right reserved.
Number of references:112
Main heading:River pollution
Controlled terms:Animals - Aquatic organisms - Aromatic compounds - Aromatic hydrocarbons
- Aromatization - Atmospheric movements - Biochemistry - Chemical analysis - Dams - Drug
products - Environmental Protection Agency - Fish - Gas chromatography - Health - Health
risks - Hydrocarbons - Mass spectrometry - Naphthalene - Pesticides - Pollution -
Polycyclic aromatic hydrocarbons - Reservoirs (water) - Rivers - Rural areas - Surface
waters - Water pollution - Water quality - Water resources
Uncontrolled terms:Distribution - Long-range atmospheric transports - Organochlorine
pesticides - Persistent organochlorine pesticides - Polycyclic aromatic hydrocarbons
(PAHS) - Source apportionment - Spatial and temporal variation - United states
environmental protection agencies
Classification code:441.1 Dams - 441.2 Reservoirs - 443.1 Atmospheric Properties - 444
Water Resources - 444.1 Surface Water - 445.2 Water Analysis - 453 Water Pollution -
454.2 Environmental Impact and Protection - 461.6 Medicine and Pharmacology - 461.7
Health Care - 471 Marine Science and Oceanography - 801 Chemistry - 801.2 Biochemistry
- 802.2 Chemical Reactions - 802.3 Chemical Operations - 803 Chemical Agents and Basic
Industrial Chemicals - 804.1 Organic Compounds
Numerical data indexing:Mass_Density 1.02e-09kg/m3, Mass_Density 1.19e-09kg/m3,
Mass_Density 1.70e-07kg/m3, Mass_Density 5.26e-08kg/m3, Percentage 1.24e+01%, Percentage
1.69e+01%, Percentage 2.10e+01%, Percentage 3.97e+00%, Percentage 4.38e+01%, Percentage
5.12e+01%, Percentage 5.36e+01%, Percentage 5.62e+01%, Percentage 5.84e+01%, Percentage
6.14e+01%, Percentage 7.71e+01%, Percentage 8.33e+01%
DOI:10.13227/j.hjkx.201703107
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 3>
Accession number:20174904509413
Title:Utilization of Copper (II) Wastewater for Enhancing the Treatment of Chromium (VI)
Wastewater in Microbial Fuel Cells
Authors:Xiong, Xiao-Min (1); Wu, Xia-Yuan (1); Jia, Hong-Hua (1); Yong, Xiao-Yu (1);
Zhou, Jun (1); Wei, Ping (1)
Author affiliation:(1) Bioenergy Research Institute, School of Biotechnology and
Pharmaceutical Engineering, Nanjing University of Technology, Nanjing; 211800, China
Corresponding author:Wu, Xia-Yuan(wuxiayuan@njtech.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4262-4270
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The effect of copper (II) wastewater addition on the treatment of chromium (VI)
wastewater in dual-chamber microbial fuel cells (MFCs) was investigated for different Cr
(VI)/Cu(II) concentration ratios (2:1, 1:1, 1:2, 1:4) and external resistances (10, 500,
1 000, 2 000 Ω). The results demonstrated that the addition of Cu(II) and Cr(VI)
into the cathode chamber of MFCs could enhance the Cr(VI) removal efficiency. The Cr(VI)
removal efficiency increased with the increase in the Cr(VI)/Cu(II) concentration ratio.
The Cu(II) on the Cr(VI) removal efficiencies increased with the decrease of external
resistance. The highest Cr(VI) removal efficiency achieved was 91.00% in MFC at the Cr
(VI)/Cu(II) concentration ratio of 1:4 and external resistance of 10 Ω, which was
132.57% higher than the MFC with Cr(VI) only (39.13%). The scanning electron microscopy
with coupled energy dispersive spectroscopy (SEM-EDS) and X-ray photoelectron
spectroscopy (XPS) analyses of the cathode electrode at the end of the experiments
indicated that Cr(VI) reduced to non-conductive Cr(III) deposits
(Cr<inf>2</inf>O<inf>3</inf>) on the cathode electrode, resulting in cathode deactivation
which blocked the electron transfer. However, the addition of Cu(II) could improve the
electrical conductivity of the cathode due to its conductive reduzates (copper and
Cu<inf>2</inf>O) on the cathode which could reduce the cathode deactivation and
subsequently enhance the Cr(VI) removal efficiency.<br/> © 2017, Science Press. All
right reserved.
Number of references:26
Main heading:Chromium compounds
Controlled terms:Cathodes - Chemicals removal (water treatment) - Chromium - Copper -
Copper compounds - Electrodes - Energy dispersive spectroscopy - Fuel cells - Gas fuel
purification - Heavy metals - Microbial fuel cells - Removal - Scanning electron
microscopy - Wastewater treatment - X ray photoelectron spectroscopy
Uncontrolled terms:Cathode chambers - Cathode electrodes - Concentration ratio - Effect
of coppers - Electrical conductivity - Electron transfer - External resistance -
Microbial fuel cells (MFCs)
Classification code:452.4 Industrial Wastes Treatment and Disposal - 522 Gas Fuels -
531 Metallurgy and Metallography - 543.1 Chromium and Alloys - 544.1 Copper - 702.2
Fuel Cells - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products
Generally
Numerical data indexing:Electrical_Resistance 1.00e+01Ohms, Electrical_Resistance 2.00e
+03Ohms, Percentage 1.33e+02%, Percentage 3.91e+01%, Percentage 9.10e+01%
DOI:10.13227/j.hjkx.201703129
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 4>
Accession number:20174904509422
Title:Effect of Two-Stage Aeration on Nitrogen Removal Performance of Aerobic Granular
Sludge
Authors:Wang, Wen-Xiao (1); Bian, Wei (1); Wang, Meng (2); Kan, Rui-Zhe (1); Zhao, Qing
(1); Liang, Dong-Bo (1); Li, Jun (1)
Author affiliation:(1) College of Architecture and Civil Engineering of Beijing
University of Technology, Beijing; 100124, China; (2) Beijing Drainage Group Co., Ltd.,
Beijing; 100044, China
Corresponding author:Li, Jun(jglijun@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4332-4339
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Four mini experiments were conducted at different conditions. The heterotrophic
microorganisms on the aerobic granular sludge surface consumed organic compounds at the
initial stage of aeration. The denitrification rate and the efficiency of
NO<inf>2</inf><sup>-</sup>-N and NO<inf>3</inf><sup>-</sup>-N removal were relatively
low. Therefore, under the normal temperature conditions (20-23℃), aerobic granular
sludge sequencing batch reactor (SBR) was operated in the two-stage aeration mode(first
in low aeration then in high aeration mode). The low aeration time were carried out at 1,
2 and 3 hours stages respectively, and the characteristics of the granular sludge and its
effects on microorganisms were analyzed by scanning electron microscopy (SEM) and
fluorescence in situ hybridization (FISH) technique. The results show that the increase
in the aerobic granular sludge (AGS) particle size improved the denitrification capacity;
the denitrification rate of NO<inf>2</inf><sup>-</sup>-N was the highest at low aeration
mode with 2 h and reached 9.66 mg·(g·h)<sup>-1</sup>. The accumulation rate
of nitrite increased to 77.84% and the total nitrogen removal rate to 70%. The bacterial
count inside the granular sludge increased and they were mainly cocci, bacillus, and
ellipsoidal bacteria. Moreover, the proportion of ammonia-oxidizing bacteria in total
bacterial count increased from 13.70% to 15.40%. Therefore, the two-stage aeration
process achieved shortened simultaneous nitrification and denitrification processes and
showed a good denitrification performance.<br/> © 2017, Science Press. All right
reserved.
Number of references:30
Main heading:Bacteria
Controlled terms:Bacteriology - Batch reactors - Denitrification - Fluorescence
microscopy - Granular materials - Microorganisms - Nitration - Nitrification - Nitrogen -
Nitrogen oxides - Nitrogen removal - Particle size - Particles (particulate matter) -
Scanning electron microscopy - Sewage treatment
Uncontrolled terms:Aerobic granular sludges - Ammonia oxidizing bacteria -
Denitrification capacity - Denitrification rate - Fluorescence in situ hybridization
techniques - Nitrite accumulation - Simultaneous nitrification and denitrification -
Temperature conditions
Classification code:452.2 Sewage Treatment - 461.9 Biology - 802.1 Chemical Plants and
Equipment - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.2
Inorganic Compounds - 931.4 Quantum Theory; Quantum Mechanics - 951 Materials Science
Numerical data indexing:Percentage 1.37e+01% to 1.54e+01%, Percentage 7.00e+01%,
Percentage 7.78e+01%, Time 1.08e+04s, Time 7.20e+03s
DOI:10.13227/j.hjkx.201703207
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 5>
Accession number:20174904509386
Title:Pollution Characteristics of Aerosol Number Concentration in Winter and Spring in a
Northern Suburb of Nanjing
Authors:Wu, Dan (1, 2); Zhang, Fan (1, 2); Liu, Gang (1, 2); Wu, Ming (1, 3); Xia, Jun-
Rong (3); Gai, Xin-Lei (1, 2); Li, Feng-Ying (1, 2); Yang, Meng (1, 2)
Author affiliation:(1) Jiangsu Collaborative Innovation Center of Atmospheric Environment
and Equipment Technology(CICAEET), Nanjing University of Information Science and
Technology, Nanjing; 210044, China; (2) Jiangsu Key Laboratory of Atmospheric Environment
Monitoring and Pollution Control, Nanjing University of Information Science and
Technology, Nanjing; 210044, China; (3) Key Laboratory for Aerosol-Cloud-Precipitation of
China Meteorological Administration, Nanjing; 210044, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4015-4023
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Using APS-3321, the atmospheric aerosol number concentrations (0.5-20 μm)
were continuously monitored to analyze the characteristics of winter and spring pollution
in 2014 in a northern suburb of Nanjing. The average number concentrations were
(364.8±297.8) cm<sup>-3</sup>and (79.6±62.4) cm<sup>-3</sup>in winter and
spring, respectively; fine particles (0.5-1.0 μm) accounted for 87.8% and 86.6% of the
total, respectively. There were significant variations in number concentration at
different periods. The diurnal variations in number concentrations were evident with high
concentrations at night and low concentrations during the day. The early peaks were at
07:00 and 09:00, and number concentrations began to increase rapidly starting at 17:00
and 18:00 in winter and spring, respectively. The distribution of the number
concentrations was unimodal, with peak sizes between 0.583 and 0.626 μm in winter and
less than 0.542 μm in spring. With the increase in relative humidity, aerosol number
concentrations increased gradually; at the same time, the peak size moved to a larger
diameter which reflected the influence of hygroscopic growth of aerosols. During the
total observation period, it reached 83.3% of the proportion of hazy days. The number
concentration of particles less than 2.0 μm increased significantly with the increase
in the haze pollution level, which was more obvious in winter. In spring, the proportion
of fine particles increased with the increase in the haze level but in winter, it
decreased during hazy days due to a significant increase in particle size caused by
aging. The analysis of the typical pollution process in January indicated that there was
a strong correlation between the source of air mass and the surface wind direction.
Pollutants transmitted from the northern Jiangsu Province and the accumulation of
pollutants due to slow winds were important causations of the pollution process.<br/>
© 2017, Science Press. All right reserved.
Number of references:27
Main heading:Air pollution
Controlled terms:Aerosols - Atmospheric aerosols - Atmospheric humidity - Particle size -
Particle size analysis - Pollution
Uncontrolled terms:Air mass - Diurnal variation - Hygroscopic growth - Levels of haze -
Low concentrations - Number concentration - Observation Period - Strong correlation
Classification code:443.1 Atmospheric Properties - 451 Air Pollution - 951 Materials
Science
Numerical data indexing:Percentage 8.33e+01%, Percentage 8.66e+01%, Percentage 8.78e+01%,
Size 2.00e-06m, Size 5.00e-07m to 1.00e-06m, Size 5.00e-07m to 2.00e-05m, Size 5.42e-07m,
Size 5.83e-07m to 6.26e-07m
DOI:10.13227/j.hjkx.201702070
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 6>
Accession number:20174904509407
Title:Occurrence and Human Exposure Risk Assessment of Organophosphate Esters in Drinking
Water in the Weifang Binhai Economic-Technological Development Area
Authors:Dong, Zheng (1); Ma, Yu-Long (1); Li, Jun-Qi (1); Yuan, Hao-Dong (1); Jin, Jun
(1); Wang, Ying (1)
Author affiliation:(1) College of Life and Environmental Sciences, Minzu University of
China, Beijing; 100081, China
Corresponding author:Wang, Ying(wy1972@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4212-4219
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Concentrations and composition of six organophosphate esters (OPEs) in drinking
water in the Weifang Binhai Economic-Technological Development Area were detected by
solid phase extraction-gas chromatography-triple quadrupole mass spectrometry (SPE-GC-
MS/MS). The correlations of OPEs in drinking water and pooled serum samples from the
Weifang Binhai Economic-Technological Development Area were analyzed. The health risk
posed by OPEs in drinking water was evaluated using the health risk assessment model
recommended by the United States Environmental Protection Agency (USEPA). The results
showed that ∑<inf>6</inf>OPEs concentrations in the tap water samples ranged from
162-253 ng·L<sup>-1</sup>, while ∑<inf>6</inf>OPEs concentrations in
groundwater ranged from 3.52-13.9 ng·L<sup>-1</sup>, two orders of magnitude lower
than that in the tap water. Tris(2-chloroethyl)phosphate (TCEP) was the dominant OPE in
the tap water samples, with the median level accounting for 94.81% of the
∑<inf>6</inf>OPEs. Triphenyl phosphate (TPhP) was the dominant OPE in groundwater,
with the median level accounting for 47.55% of the ∑<inf>6</inf>OPEs. The composition
of OPEs in the human mixed serum collected in 2011 and 2015 was strongly correlated with
that in the tap water (r=0.990, P<0.01 and r=0.997, P<0.01, respectively). This
indicates the significant contribution of OPEs in drinking water to OPEs in human serum.
The daily intake (DI) of OPEs via drinking water was 0.26-7.48 ng·(kg·d)
<sup>-1</sup>and the non-cancer risk hazard quotient (HQ) of OPEs in drinking water
ranged from 10<sup>-5.81</sup>-10<sup>-2.43</sup>, indicating a negligible non-cancer
risk to the local residents exposed to OPEs through drinking water. The carcinogenic
risks posed by TCEP in drinking water ranged from 10<sup>-8.82</sup>-10<sup>-6.79</sup>,
which was lower than the theoretical threshold (Risk=10<sup>-6.00</sup>), while the
carcinogenic risk of TCEP in tap water was higher than that in groundwater.<br/> ©
2017, Science Press. All right reserved.
Number of references:26
Main heading:Water
Controlled terms:Bins - Body fluids - Diseases - Economic and social effects -
Environmental Protection Agency - Esters - Gas chromatography - Groundwater - Health
risks - Mass spectrometry - Phase separation - Plasticizers - Potable water - Risk
assessment
Uncontrolled terms:Carcinogenic risk - Non-cancer risks - Organophosphate esters -
Solid-phase extraction - Technological development - Triple-quadrupole mass spectrometry
- Tris(2-chloroethyl) phosphate - United states environmental protection agencies
Classification code:444 Water Resources - 444.2 Groundwater - 454.2 Environmental
Impact and Protection - 461.2 Biological Materials and Tissue Engineering - 461.7
Health Care - 694.4 Storage - 801 Chemistry - 802.3 Chemical Operations - 803
Chemical Agents and Basic Industrial Chemicals - 804.1 Organic Compounds - 914.1
Accidents and Accident Prevention - 971 Social Sciences
Numerical data indexing:Mass_Density 1.62e-07kg/m3 to 2.53e-07kg/m3, Mass_Density 3.52e-
09kg/m3 to 1.39e-08kg/m3, Percentage 4.75e+01%, Percentage 9.48e+01%
DOI:10.13227/j.hjkx.201703174
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 7>
Accession number:20174904509420
Title:Start-up and Capacity Enhancement of a Partial Nitrification Pilot Reactor in
Continuous Flow
Authors:Zhu, Qiang (1, 2); Liu, Kai (1, 2); Dong, Shi-Yu (1, 2); Gu, Cheng-Wei (1, 2);
Wang, Fan (1, 2); Li, Xiang (1, 2); Huang, Yong (1, 2)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Institute of Environmental
Biotechnology, Suzhou University of Science and Technology, Suzhou; 215009, China
Corresponding author:Huang, Yong(yhuang@mail.usts.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4316-4323
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The continuous flow reactor was used to treat simulated ammonia nitrogen
wastewater by inoculating the sludge after filtration and adding a suspended filler.
Regulations of free ammonia (FA), free nitrous acid (FNA), and dissolved oxygen (DO) in
the reactor were the key to achieving a successful start-up of the pilot scale
nitrosation reactor. The results show that the enrichment of ammonium oxidizing bacteria
(AOB) and the elimination of nitrite oxidizing bacteria (NOB) are achieved by adjusting
the operational mode of high DO, low DO, FA, and FNA in the reactor operation. The
nitrite production rate (NPR) in the reactor was 1.27 kg·(m<sup>3</sup>·d)
<sup>-1</sup>and the nitrogen accumulation rate (NAR) was stable at 98% at the end of the
start-up period. qPCR was used to study the difference in the functional microorganisms
(AOB, NOB) between the beginning and the end of the start-up period. The results show
that the copy number of microbial AOB grew from
5.3×10<sup>9</sup>copies·mL<sup>-1</sup>to
1.6×10<sup>11</sup>copies·mL<sup>-1</sup>. The copy number of NOB decreased
from 1.1×10<sup>10</sup>copies·mL<sup>-1</sup>to
1.2×10<sup>9</sup>copies·mL<sup>-1</sup>, because of the joint regulation of
DO, FA, FNA to suppress NOB.<br/> © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Bacteria
Controlled terms:Ammonia - Dissolved oxygen - Inorganic acids - Nitrogen - Polymerase
chain reaction - Wastewater treatment
Uncontrolled terms:Continuous flows - Free ammonia - Free nitrous acid (FNA) - Partial
nitritation - QPCR
Classification code:452.4 Industrial Wastes Treatment and Disposal - 801.2 Biochemistry
- 804 Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Percentage 9.80e+01%
DOI:10.13227/j.hjkx.201704183
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 8>
Accession number:20174904509398
Title:Distinguishing the Properties and Sources of the Dissolved Organic Matter in Karst
Reservoir Water During Winter Using Three-Dimensional Fluorescence Spectrum Technology: A
Case Study in Wulixia Reservoir of Guangxi Province
Authors:Lu, Xiao-Xuan (1, 2); Peng, Wen-Jie (2, 3); Li, Qiang (2); Fang, Jun-Jia (1, 2);
Jin, Zhen-Jiang (3); Song, Ang (2); Huang, Bin-Hui (2, 3); Yu, Shi (2)
Author affiliation:(1) Chongqing Key Laboratory of Karst Environment, School of
Geographical Sciences, Southwest University, Chongqing; 400715, China; (2) Key Laboratory
of Karst Dynamics, Ministry of Land and Resources & Guangxi, Institute of Karst
Geology, Chinese Academy of Geological Sciences, Guilin; 541004, China; (3) College of
Environmental Science and Engineering, Guilin University of Technology, Guilin; 541006,
China
Corresponding author:Li, Qiang(glqiangli@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4120-4129
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In recent years, the fluorescence spectrum technology has been widely applied to
study the physical and chemical properties of dissolved organic matter (DOM) in natural
water. In order to reveal the properties of the dissolved organic matter in reservoir
water, the three-dimensional fluorescence spectrum and the parallel factor analysis were
used to determine the properties of DOM and its sources in the Wulixia reservoir during
the winter of 2016. Moreover, the chemical characteristics of water and the relative
proportion of DOM fluorescent components were estimated. Results show that: ①
Ca<sup>2+</sup>and HCO<inf>3</inf><sup>-</sup>are the main cations and anions in the
Wulixia reservoir during winter. The water is mainly controlled by the carbonate balance
system and dissolved organic carbon (DOC) accounted for about 91% of total organic carbon
(TOC). ② DOM from the Wulixia reservoir can be divided into three components:
fulvic acid, humic acid, and tryptophan. ③ The parameters, fluorescence index,
humification index, biological index, and freshness index show the existence of DOM in
the Wulixia reservoir. Microorganisms have a significant effect on DOM composition.<br/>
© 2017, Science Press. All right reserved.
Number of references:36
Main heading:Organic carbon
Controlled terms:Amino acids - Biogeochemistry - Biological materials - Carbon -
Dissolution - Fluorescence - Landforms - Organic acids - Organic compounds
Uncontrolled terms:Dissolved organic matters - EEMs - Karst areas - Karst hydrochemistry
characteristics - PARAFAC
Classification code:461.2 Biological Materials and Tissue Engineering - 481.1 Geology -
481.2 Geochemistry - 741.1 Light/Optics - 802.3 Chemical Operations - 804 Chemical
Products Generally - 804.1 Organic Compounds
Numerical data indexing:Percentage 9.10e+01%
DOI:10.13227/j.hjkx.201703050
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 9>
Accession number:20174904509394
Title:Characteristics of C2-C6 Hydrocarbons During the Winter Air Pollution Period in
Beijing Urban Area
Authors:Li, Yue (1); Wei, Wei (1, 2); Yang, Gan (1); Chen, Dong-Sheng (1); Cheng, Shui-
Yuan (1, 2); Han, Li-Hui (1, 2)
Author affiliation:(1) College of Environmental and Energy Engineering, Beijing
University of Technology, Beijing; 100124, China; (2) Key Laboratory of Beijing on
Regional Air Pollution Control, Beijing University of Technology, Beijing; 100124, China
Corresponding author:Wei, Wei(weiwei@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4084-4091
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A C2-C6 hydrocarbons monitoring campaign was carried out in the Beijing
Southeastern Urban Area during December 2015. Twenty-five compounds excluding benzene
were detected by an on-line VOCs analyzer; the sum of their concentrations is referred to
as C2-C6 HCs in this study. During the monitoring period, C2-C6 HCs ranged from
12.4×10<sup>-9</sup>to 297.5×10<sup>-9</sup>. The mean value of C2-C6 HCs
reached 29.4×10<sup>-9</sup>, 63.2×10<sup>-9</sup>, 85.5×10<sup>-
9</sup>, 94.9×10<sup>-9</sup>, and 131.8×10<sup>-9</sup>, respectively, in AQ
I (air quality) (hourly PM<inf>2.5</inf><35 μg·m<sup>-3</sup>), AQ II
(hourly PM<inf>2.5</inf>: 35-75 μg·m<sup>-3</sup>), AQ III (hourly
PM<inf>2.5</inf>: 75-150 μg·m<sup>-3</sup>), AQ IV (hourly PM<inf>2.5</inf>:
150-250 μg·m<sup>-3</sup>), and AQ V (hourly PM<inf>2.5</inf>: >250
μg·m<sup>-3</sup>). Moreover, the mole percentage of alkanes, alkenes, and
ethyne significantly varied, 47% vs. 59%, 45% vs. 30%, and 7% vs. 12% (AQ I vs. AQ V).
The diurnal variation of C2-C6 HCs presented two peaks at 08:00-09:00 and 17:00-18:00 not
only in clean days (when 24-h PM<inf>2.5</inf><75 μg·m<sup>-3</sup>) but
also in polluted days (when 24-h PM<inf>2.5</inf>>75 μg·m<sup>-3</sup>).
This result is consistent with the normal traffic pattern and indicates the significant
impact of vehicle emissions on atmospheric hydrocarbon concentrations. Furthermore, we
calculated the HCs/CO (×10<sup>-9</sup>/×10<sup>-6</sup>) ratio to prevent
the impact of meteorological diffusion on C2-C6 HCs and to trace the physical transport
process and the chemical degradation process of hydrocarbons. The C2-C6 HCs/CO ratio and
the individual hydrocarbon to CO ratio presented a notable decreasing trend with
worsening air quality, 90.6 (AQ I), 63.8 (AQ II), 56.9 (AQ III), 37.4 (AQ IV), and 36.4
(AQ V). However, the rate of decrease in the ratio of individual hydrocarbons to CO in
the polluted period (AQ III-V) relative to the clean period (AQ I-II) was never
effectively related to the kinetic parameters of the reactions with the OH radical.
Therefore, the strong chemical degradation of C2-C6 hydrocarbons in the polluted air was
denied as the main reason. The HYSPLIT trajectory model showed that the transported air
mass from the north and northwest and from the south and southwest prevail in the clean
period and in the polluted period, respectively. Compared to the northern region, there
were more sources of fossil fuel combustion in the southern region, which led to a lower
HCs/CO ratio for the air mass in the southern region. Therefore, the increase in C2-C6
hydrocarbons during the polluted period was not only caused by the accumulation of local
emissions but also by the air mass transport from the south.<br/> © 2017, Science
Press. All right reserved.
Number of references:20
Main heading:Air pollution
Controlled terms:Air quality - Degradation - Fossil fuels - Free radicals - Fuels -
Hydrocarbons - Pollution - Urban transportation
Uncontrolled terms:C2-C6 HCs - Chemical degradation - HCs/CO - Heavy pollution period -
Regional transport - Urban areas
Classification code:432 Highway Transportation - 433 Railroad Transportation - 451 Air
Pollution - 451.2 Air Pollution Control - 802.2 Chemical Reactions - 804.1 Organic
Compounds
Numerical data indexing:Percentage 3.00e+01%, Percentage 5.90e+01%
DOI:10.13227/j.hjkx.201703217
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 10>
Accession number:20174904509421
Title:Quick Start-up Performance of Combined ANAMMOX Reactor Based on Different
Inoculated Sludge Types
Authors:Lü, Gang (1); Li, Tian (1); Xu, Le-Zhong (1, 2, 3); Shen, Yao-Liang (1, 2,
3); Wu, Peng (1, 2, 3); Zhang, Ting (1); Samwine, Thomas (1)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Jiangsu Collaborative Innovation
Center of Technology and Material of Water Treatment, Suzhou; 215009, China; (3) Jiangsu
Key Laboratory of Environmental Science and Engineering, Suzhou; 215009, China
Corresponding author:Xu, Le-Zhong(kgre505@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4324-4331
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to determine the optimal sludge source of anaerobic ammonium oxidation
(ANAMMOX) and the rapid formation of ANAMMOX granular sludge, two CAMBRs (combined ABR
and MBR) were compared for ANAMMOX enrichment with different inoculated sludge types, the
anaerobic granular sludge (R1) and flocculent denitrifying sludge (R2). The results
showed that ANAMMOX was successfully initiated after 45 d (R1) and 60 d (R2) in both
reactors, respectively. The enrichment processes are divided into three different phases,
lag phase, activity elevation phase, and stationary phase but the removal rules of
nitrogen in each phase were different. In the steady phase, the average removal rates of
NH<inf>4</inf><sup>+</sup>-N and NO<inf>2</inf><sup>-</sup>-N were higher than 95%. In
addition, the red ANAMMOX granular sludge with the main diameter of 0.8-1.6 mm was formed
in R1 while the flocculent sludge and irregular block with a low degree of granulation
were mainly developed in R2. The phenomenon of red granular sludge floating in the two
reactors was also observed. The quantitative relationship analysis between
NH<inf>4</inf><sup>+</sup>-N, NO<inf>2</inf>-N, and NO<inf>3</inf><sup>-</sup>-N showed
the occurrence of nitrate-dependent ANAMMOX, which resulted in the oxidation of excess
ammonia and the typical nitrite-dependent ANAMMOX occurred in R2.<br/> © 2017,
Science Press. All right reserved.
Number of references:35
Main heading:Nitrogen removal
Controlled terms:Granular materials - Granulation - Nitrogen oxides - Oxidation -
Wastewater treatment
Uncontrolled terms:Anaerobic ammonium oxidation - Anaerobic granular sludge - CAMBR -
Flocculent sludge - Inoculated sludge - Quick start-up - Relationship analysis -
Stationary phase
Classification code:452.4 Industrial Wastes Treatment and Disposal - 802.2 Chemical
Reactions - 802.3 Chemical Operations - 804.2 Inorganic Compounds - 951 Materials
Science
Numerical data indexing:Percentage 9.50e+01%, Size 8.00e-04m to 1.60e-03m
DOI:10.13227/j.hjkx.201704053
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 11>
Accession number:20174904509401
Title:Spatial and Temporal Distribution of Chlorophyll a and Its Relationship to Algae
and Environmental Factors in Aha Reservoir
Authors:Luo, Yi-Fu (1); Li, Lei (2); Li, Qiu-Hua (2); Jiao, Shu-Lin (1); Li, Hong-Mei
(2); Chen, Feng-Feng (3)
Author affiliation:(1) School of Geography and Environmental Science, Guizhou Normal
University, Guiyang; 550001, China; (2) Key Laboratory for Information System of
Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou
Normal University, Guiyang; 550001, China; (3) School of Public Health, Guizhou Medical
University, Guiyang; 550025, China
Corresponding author:Li, Qiu-Hua(qiuhua2002@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4151-4159
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:As one of the drinking water sources for Guiyang City in southwest China, the
Aha Reservoir has an area of 190 km<sup>2</sup>and a volume of
5.42×10<sup>8</sup>m<sup>3</sup>. The water depth is less than 30 m, with an
average depth of 13 m. Regulated by subtropical humid monsoon climate, it has cool
summers and warm winters, with an annual mean air temperature of about 15.3℃ and an
annual normal rainfall of approximately 1,129 mm. Impacted heavily by human activity
(e.g., untreated industrial and domestic sewage and agricultural non-point pollution
sources), the eutrophication problem in the Aha Reservoir has become more serious each
year. In order to explore the spatial and temporal distribution characteristics of
chlorophyll a (Chl-a) and its relationship to algae and the driving factors in the Aha
Reservoir, phytoplankton and water samples were collected in the dry period, normal
period, and flood period. The results showed a significant seasonal variation in Chl-a,
same as biomass, but not the same as the algal abundance. Highest Chl-a concentration (91
μg·L<sup>-1</sup>) occurred in the mean season with the dinoflagellate bloom
but during dry and wet seasons, they were only 8 μg·L<sup>-1</sup>and 16
μg·L<sup>-1</sup>, respectively. During the dry and flood periods, the Chl-a
concentrations in surface waters were slightly higher than the other layers caused by
sufficient light and dissolved oxygen. But in the normal period, the Chl-a concentrations
in surface waters were far higher than the other layers because of the dinoflagellate
bloom assembling in surface waters. Located at the reservoir entrance of Jinzhong River,
Dam sampling point owned higher Chl-a concentration than Kuzhong as a result of higher
nutrients. Correlation analysis indicated that Dinoflagellate was positively correlated
with Chl-a (R=0.798, P<0.01). Chl-a was positively associated with total phosphorus,
dissolved oxygen, pH value, and total nitrogen (R=0.762, P<0.01; R=0.792, P<0.01;
R=0.658, P<0.01; R=0.388, P<0.05) and it had a negative correlation with the N/P
ratio and nitrate nitrogen (R=-0.37, P<0.05; R=-0.435, P<0.05). Stepwise regression
analysis showed that TP, N/P ratio, and DO were the most important factors influencing
the temporal and spatial distribution of Chl-a. Thermal stratification and water
temperature were also the significant factors that could not be ignored.<br/> ©
2017, Science Press. All right reserved.
Number of references:40
Main heading:Reservoirs (water)
Controlled terms:Algae - Biochemical oxygen demand - Chlorophyll - Dissolved oxygen -
Eutrophication - Factor analysis - Floods - Nitrogen - Potable water - Rain - Regression
analysis - River pollution - Sewage - Spatial distribution - Surface waters - Vehicular
tunnels - Water
Uncontrolled terms:Agricultural non-point pollution - Chlorophyll a - Drinking water
sources - Driving factors - Environmental factors - Spatial and temporal distribution -
Stepwise regression analysis - Temporal and spatial distribution
Classification code:401.2 Tunnels and Tunneling - 441.2 Reservoirs - 443.3
Precipitation - 444 Water Resources - 444.1 Surface Water - 452.1 Sewage - 453 Water
Pollution - 804 Chemical Products Generally - 804.1 Organic Compounds - 921
Mathematics - 922.2 Mathematical Statistics
Numerical data indexing:Area 1.90e+08m2, Mass_Density 1.60e-05kg/m3, Mass_Density 8.00e-
06kg/m3, Mass_Density 9.10e-05kg/m3, Size 1.13e+00m, Size 1.30e+01m, Size 3.00e+01m
DOI:10.13227/j.hjkx.201703177
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 12>
Accession number:20174904509410
Title:Spatio-temporal Evolution of Groundwater Vulnerability Based on Spatial
Autocorrelation
Authors:Liu, Yu (1, 2); Lan, Shuang-Shuang (1, 2); Zhang, Yong-Xiang (1, 2); Li, Fang-
Chun (1, 2); Hou, Shu-Kai (1, 2)
Author affiliation:(1) College of Architecture and Civil Engineering, Beijing University
of Technology, Beijing; 100124, China; (2) Key Laboratory of Beijing for Water Quality
Science and Water Environment Recovery Engineering, Beijing University of Technology,
Beijing; 100124, China
Corresponding author:Lan, Shuang-Shuang(lanshuangs@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4236-4244
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The distribution patterns of human activities affecting groundwater
vulnerability vary with time. Studying the temporal and spatial changes in groundwater
vulnerability, exploring the distribution characteristics of each period, and predicting
the trends of development are important to formulate an effective development plan and
reduce the risk of groundwater pollution at the same time. Based on the hydrogeological
data as well as humanities and social data for 2004, 2010, and 2016 for the Chaoyang
District of Beijing, a comprehensive evaluation model considering the human factors such
as the land use types was established using the DRASTIC model. The spatiotemporal pattern
of groundwater vulnerability was quantitatively characterized by calculating the Global
Moran's I and Getis-Ord Gi<sup>*</sup>index, and the distribution characteristics and
variations in groundwater vulnerability were analyzed by the centroid of the G index and
the standard deviation ellipse of the study area. The results indicate that in 2004,
2010, and 2016, the areas of high vulnerability have gradually reduced. The groundwater
vulnerability in the study area shows a strong spatial aggregation; high concentration
areas are mainly distributed in the northeast and southwest regions. The vulnerability of
the northeast region has been decreasing each year, while the vulnerability of the
northwest region has not changed much. The main reasons are the land use changes and the
reductions in fertilizer use.<br/> © 2017, Science Press. All right reserved.
Number of references:23
Main heading:Groundwater pollution
Controlled terms:Autocorrelation - Groundwater - Land use
Uncontrolled terms:Comprehensive evaluation model - Distribution characteristics -
Distribution patterns - Groundwater vulnerability - Spatial autocorrelations -
Spatiotemporal evolution - Spatiotemporal patterns - Temporal and spatial changes
Classification code:403 Urban and Regional Planning and Development - 444.2 Groundwater
- 921 Mathematics
DOI:10.13227/j.hjkx.201704052
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 13>
Accession number:20174904509424
Title:Comparision of Ecological Risk Assessment Based on the Total Amount and Speciation
Distribution of Heavy Metals in Soil: A Case Study for Longyan City, Fujian Province
Authors:Wang, Rui (1); Chen, Ming (1); Chen, Nan (2); Liu, Guan-Nan (1); Zhang, Er-Xi
(3); Liu, Xiao-Duan (4); Zhang, Jia-Wen (1)
Author affiliation:(1) Ministry of Land and Resources Key Laboratory of Metallogeny and
Mineral Assessment, Institute of Mineral Resources Chinese Academy of Geological
Sciences, Beijing; 100037, China; (2) Environmental Development Centre of Ministry of
Environmental Protection, Beijing; 100029, China; (3) College of Management Science,
Chengdu University of Technology, Chengdu; 610059, China; (4) National Research Center
for Geoanalysis, Beijing; 100037, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4348-4359
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A total of 110 topsoil samples and 61 crop samples along the Lantian-Yangdong
Villages were collected in Shizhong, Longyan City. The total amount and speciation of
heavy metals(Pb, Cd, As) in soil and crops were determined. The characteristics of the
absorption of heavy metals by specific crops in the study area were analyzed, and a new
method of risk assessment based on the heavy metal speciation and its bioavailability was
established by statistical analysis. This new method was used to evaluate the soil
ecological risk and to compare it with the traditional method of potential ecological
risk index (RI). The results indicated that the Lantian-Yangdong Villages were located in
an area where Pb, Cd, and As mainly originate from the natural soil parent material with
weak human disturbance. There was no significant Pb or As pollution in the whole region.
Cd was the main pollutant with low pollution intensity. Four types of biological
components except for the residual form followed the order of Cd(53.28%)>Pb(43.28%)
>As(30.71%). Correlation and regression analyses of total metal concentrations, heavy
metal speciation, and crop uptake in the study area showed that the correlations between
the total amount of heavy metals and the ion exchange state, carbonate state, and other
active forms were low; the results even showed nonlinear relationships between those
variables.The ion exchange state had the greatest effect on the absorption of Pb, Cd, and
As by coix seed and rice. From the perspective of bioavailability, the new method based
on the heavy metal speciation was more accurate than the traditional method based on the
total amount of heavy metals.<br/> © 2017, Science Press. All right reserved.
Number of references:54
Main heading:Risk assessment
Controlled terms:Biochemistry - Cadmium - Crops - Ecology - Heavy metals - Ion exchange -
Lead - Pollution - Regression analysis - Rural areas - Soils
Uncontrolled terms:Absorption of heavy metals - Correlation and regression analysis -
Ecological risk assessment - Heavy metal speciation - Non-linear relationships -
Potential ecological risk - Speciation - Total amount
Classification code:454.3 Ecology and Ecosystems - 483.1 Soils and Soil Mechanics - 531
Metallurgy and Metallography - 546.1 Lead and Alloys - 549.3 Nonferrous Metals and
Alloys excluding Alkali and Alkaline Earth Metals - 801.2 Biochemistry - 802.2 Chemical
Reactions - 821.4 Agricultural Products - 914.1 Accidents and Accident Prevention -
922.2 Mathematical Statistics
Numerical data indexing:Percentage 3.07e+01%, Percentage 4.33e+01%, Percentage 5.33e+01%
DOI:10.13227/j.hjkx.201702137
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 14>
Accession number:20174904509412
Title:Effect of Eichhornia crassipes on Ammoxidation and Denitrification Microorganisms
in Eutrophic Freshwaters
Authors:Li, Jie (1); Jiang, Li-Juan (1); Wang, Xiao-Lin (1); Xiao, Lin (1)
Author affiliation:(1) State Key Laboratory of Pollution Control and Resource Reuse,
School of the Environment, Nanjing University, Nanjing; 210023, China
Corresponding author:Xiao, Lin(xiaolin@nju.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4253-4261
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The water hyacinth, Eichhornia crassipes, is widely used for the ecological
restoration of eutrophic freshwater bodies, but little is known about its microbial
interactions and nitrogen removal potential. In this study, we compared the relative
importance of E. crassipes and bacteria in nitrogen removal. We also examined the plant's
ability to modulate the abundance and diversity of nitrifying and denitrifying bacteria.
Nitrogen removal and the genetic potential for nitrification and denitrification,
determined using quantitative polymerase chain reactions (qPCRs) of the nitrification
gene amoA and the denitrification genes nirS/K, were evaluated in microcosms containing
water from a eutrophic lake with or without E. crassipes. The results showed that total
nitrogen (TN) losses on day 70 of the experiment were similar in all treatments but the
uptake by E. crassipes resulted in the rapid (within 24 h) removal of TN and
NH<inf>4</inf><sup>+</sup>-N. In microcosms containing E. crassipes, the abundance of
amoA increased whereas the abundances of nirS/K decreased. The T-RFLP (terminal
restriction fragment length polymorphism) profiles showed that Nitrosomonas dominated the
ammonia-oxidizing prokaryotes, based on the DNA and RNA levels of the targeted genes. The
E. crassipes cultivation can be used to achieve fast and efficient reductions in
NH<inf>4</inf><sup>+</sup>-N concentrations in eutrophic water bodies. While this aquatic
macrophyte may not be essential to N removal, considering the potential toxicity of
NH<inf>4</inf><sup>+</sup>-N, both aquaphytes and microbes should be fully exploited in
the restoration of freshwater ecosystems.<br/> © 2017, Science Press. All right
reserved.
Number of references:44
Main heading:Nitrogen removal
Controlled terms:Aquatic ecosystems - Bacteria - Denitrification - Ecology -
Eutrophication - Genes - Microorganisms - Nitrification - Nitrogen - Nucleic acids -
Polymerase chain reaction - Restoration - Water
Uncontrolled terms:Ammonia-oxidizing prokaryotes - AmoA - Eichhornia crassipes - NirK/S -
Nitrification and denitrification - Quantitative polymerase chain reaction - T-RFLP -
Terminal restriction fragment length polymorphisms
Classification code:454.3 Ecology and Ecosystems - 461.2 Biological Materials and
Tissue Engineering - 461.9 Biology - 801.2 Biochemistry - 802.2 Chemical Reactions -
804 Chemical Products Generally
Numerical data indexing:Time 8.64e+04s
DOI:10.13227/j.hjkx.201701179
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 15>
Accession number:20174904509384
Title:Application of Satellite Remote Sensing in NO<inf>x</inf>Emission Control
Authors:Wu, Wei-Ling (1); Xue, Wen-Bo (1); Wang, Yan-Li (1); Lei, Yu (1)
Author affiliation:(1) Chinese Academy for Environmental Planning, Beijing; 100012, China
Corresponding author:Xue, Wen-Bo(xuewb@caep.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:3998-4004
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Tropospheric NO<inf>2</inf>vertical column densities (VCDs) from ozone
monitoring instrument(OMI) were analyzed to evaluate the decrease in
NO<inf>x</inf>emissions during two special events, 70th anniversary of the end of World
War Ⅱ in 2015 and the G20 summit in 2016. Results showed a positive correlation
between NO<inf>2</inf>VCDs and near ground NO<inf>x</inf>emissions and verified that the
NO<inf>x</inf>emission control policy during “12<sup>th</sup>five-year plan”
were remarkably effective, with a 24.98% drop in VCDs in five years. At the early stage
of “13<sup>th</sup>five-year plan”, in 2016, NO<inf>2</inf>VCDs decreased by
3.18% year-on-year, showing a consistent drop in NO<inf>x</inf>.<br/> © 2017,
Science Press. All right reserved.
Number of references:17
Main heading:Nitrogen oxides
Controlled terms:Drops - Emission control - Gas emissions - Remote sensing - Ultraviolet
spectrometers
Uncontrolled terms:Five-year plans - NOx emissions - Ozone monitoring instruments -
Positive correlations - Satellite remote sensing - Vertical column densities - World war
Classification code:451.2 Air Pollution Control - 741.3 Optical Devices and Systems -
804.2 Inorganic Compounds
Numerical data indexing:Percentage 2.50e+01%, Percentage 3.18e+00%
DOI:10.13227/j.hjkx.201703172
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 16>
Accession number:20174904509385
Title:Control Models and Effect Evaluation of Air Pollution in Jing-Jin-Ji Urban
Agglomeration
Authors:Wang, Zhen-Bo (1, 2); Liang, Long-Wu (1, 2); Lin, Xiong-Bin (3); Liu, Hai-Meng
(1, 2)
Author affiliation:(1) Institute of Geographic Sciences and Natural Resources Research,
Chinese Academy of Sciences, Beijing; 100101, China; (2) Key Laboratory of Regional
Sustainable Development Modeling, Chinese Academy of Sciences, Beijing; 100101, China;
(3) Shenzhen Graduate School, Peking University, Shenzhen; 518055, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4005-4014
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Controlling air pollution in the Jing-jin-ji urban agglomeration (JJJUA), the
most seriously polluted area in China, is related to the integrated development strategy
for the region. Based on the national and regional implementation of air pollution
control measures in recent years, the hierarchical cross-regional multi-directional
linkage (HCML) air pollution prevention and control model was applied in this study. The
effect of air pollution control was evaluated by monitoring the pollutants,
SO<inf>2</inf>, NO<inf>2</inf>, PM<inf>10</inf>, PM<inf>2.5</inf>, O<inf>3</inf>, and CO,
at 112 monitoring sites in 13 cities in 2014-2015. The results can be summarized as
follows: ① The HCML model is an interrelated framework at the horizontal and
vertical level. Under the efforts provided by the central, urban agglomeration, and city
governments, this multi-level governance model serves as an effective tool to resolve the
issues related to air pollution beyond the borders of municipalities. Environmental
regulations on certain industries, energy consumption structure, car ownership and usage,
and air quality supervision and warning systems are well established under this
governance model. ② The air quality of the JJJUA has improved significantly in the
past two years. The concentrations of air pollutants significantly decreased, with the
exception of O<inf>3</inf>, and high pollution ranges significantly reduced from north to
south. The annual average concentrations of PM<inf>2.5</inf>, PM<inf>10</inf>,
SO<inf>2</inf>, NO<inf>2</inf>, and CO decreased by 17.84%, 14.61%, 37.55%, 4.82%, and
16.18%, respectively. The number of days meeting the air quality standards increased for
all pollutants except NO<inf>2</inf>. Based on the current situation and unsolved
problems of air pollution, the JJJUA area needs certain measures including diversifying
the governance subjects, joint legislation (beyond municipalities) on air pollution to
regulate pollution discharge, enhancing public awareness on air pollution and its health
impacts, carefully examining sources of air pollution in winter to reduce pollution, and
to better understand the sources of ozone and adopt effective control measures.<br/>
© 2017, Science Press. All right reserved.
Number of references:24
Main heading:Air pollution control
Controlled terms:Agglomeration - Air pollution - Air quality - Air quality standards -
Energy utilization - Environmental regulations - Laws and legislation - Nitrogen oxides -
Particles (particulate matter) - Pollution - Pollution control - Pollution induced
corrosion - Public policy
Uncontrolled terms:Air pollution prevention - Annual average concentration - Beijing-
tianjin-hebei regions - Energy consumption structure - Integrated development - Multi-
level governance - Pollution discharges - Urban agglomerations
Classification code:451 Air Pollution - 451.2 Air Pollution Control - 454.2
Environmental Impact and Protection - 525.3 Energy Utilization - 539.1 Metals Corrosion
- 802.3 Chemical Operations - 804.2 Inorganic Compounds - 902.2 Codes and Standards -
951 Materials Science - 971 Social Sciences
Numerical data indexing:Percentage 1.46e+01%, Percentage 1.62e+01%, Percentage 1.78e+01%,
Percentage 3.75e+01%, Percentage 4.82e+00%
DOI:10.13227/j.hjkx.201701007
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 17>
Accession number:20174904509414
Title:Efficiency and Microecology of a Soil Infiltration System with High Hydraulic
Loading for the Treatment of Swine Wastewater
Authors:Su, Cheng-Yuan (1, 2); Liu, Fan-Fan (1); Zhong, Yu (1); Huang, Zhi (1); Zheng,
Peng (1); Nong, Zhi-Wen (1); Lu, Yu-Xiang (1)
Author affiliation:(1) School of Environment and Resources, Guangxi Normal University,
Guilin; 541004, China; (2) University Key Laboratory of Karst Ecology and Environmental
Change of Guangxi Province, Guangxi Normal University, Guilin; 541004, China
Corresponding author:Huang, Zhi(77466325@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4271-4278
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The swine wastewater after treated with an anaerobic reactor was used to
investigate the removal efficiency of COD, ammonia nitrogen, and total nitrogen in an
ecological high hydraulic loading soil infiltration system. Meanwhile, the microbial
community structure and the contents of the catalase, urease, and nitrate reductase were
analyzed. The results showed that with the hydraulic load of 11 cm·d<sup>-
1</sup>and the influent COD concentration of 700 mg·L<sup>-1</sup>, the removal
rate of COD was 78.8%, 63.0%, and 92.6%for the first land infiltration column, the
secondary land infiltration column, and the total system, respectively. When the
hydraulic load increased to 22 cm·d<sup>-1</sup>; the total removal rate of COD
was also above 90.0%. The system was more significant for ammonia nitrogen removal. The
removal rate of ammonia nitrogen reached approximately 99%. The contents of catalase were
1.899, 0.990, and 0.323 mL·g<sup>-1</sup>at the upper, middle, and bottom sections
of the system, respectively. The organic matter in the swine wastewater was removed at
the upper and middle of the system. On the secondary soil infiltration system, the
content of nitrate reductase was 3.453, 3.831, and 1.971 mL·g<sup>-1</sup>,
respectively. Denitrification mainly occurred in the upper and middle of the secondary
soil infiltration system. Gram Negative and Gram Positive bacteria were given priority in
the soil infiltration system. Especially, arbuscular mycorrhizal fungi and Actinomycetes
dominated the secondary soil infiltration system. The system provides a guarantee for the
removal of the refractory organic compounds from the swine wastewater.<br/> © 2017,
Science Press. All right reserved.
Number of references:24
Main heading:Loading
Controlled terms:Ammonia - Bacteria - Ecology - Efficiency - Fungi - Infiltration -
Microorganisms - Nitrates - Nitrogen - Nitrogen removal - Organic compounds - Soils -
Turbines - Wastewater treatment
Uncontrolled terms:Ammonia nitrogen removal - Arbuscular mycorrhizal fungi - Enzymic
content - Microbial communities - Microbial community structures - Refractory organic
compounds - Soil infiltration - Swine wastewater
Classification code:452.4 Industrial Wastes Treatment and Disposal - 454.3 Ecology and
Ecosystems - 461.9 Biology - 483.1 Soils and Soil Mechanics - 691.2 Materials Handling
Methods - 804 Chemical Products Generally - 913.1 Production Engineering
Numerical data indexing:Mass_Density 7.00e-01kg/m3, Percentage 6.30e+01%, Percentage
7.88e+01%, Percentage 9.00e+01%, Percentage 9.90e+01%, Specific_Volume 1.97e-03m3/kg,
Specific_Volume 3.23e-04m3/kg
DOI:10.13227/j.hjkx.201611027
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 18>
Accession number:20174904509408
Title:Contamination Characteristics and Human Exposure to Organophosphate Flame
Retardants in Road Dust from Suzhou City
Authors:Li, Jing (1); Wang, Jun-Xia (1); Xu, Wan-Ting (2); Shang, Rong-Shuang (2); Gu,
Hai-Dong (1); Wen, Yao-Jin (2); Zhang, Li-Jun (1)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) School of Tianping, Suzhou
University of Science and Technology, Suzhou; 215000, China
Corresponding author:Wang, Jun-Xia(wjx_7297@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4220-4227
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The contamination levels and distribution characteristics of four
organophosphate flame retardants (OPFRs) in 25 outdoor dust samples collected in Suzhou
were quantitatively analyzed by gas chromatography-mass spectrometry (GC-MS). The
exposure to OPFRs via ingestion and inhalation of dust were also estimated for adults,
children, and professional street sweepers. Four types of OPFRs were detected in all dust
samples at different levels; the total OPFRs concentrations ranged from non-detected (ND)
to 8 901.66 ng·g<sup>-1</sup>, with a median of 1 039.21 ng·g<sup>-1</sup>.
The concentrations of TCPP, TBEP, TDCPP, and TCEP were in the range of 0-6 931.46, 0-2
021.15, 0-788.44, and 0-62.16 ng·g<sup>-1</sup>, respectively. The daily intake of
∑OPFRs under a high dust ingestion scenario was 125.68, 915.78, and 6 314.16
pg·kg<sup>-1</sup>for adults, children, and professional street sweepers,
respectively. The estimated exposure of children to ∑OPFRs was six times higher than
that of adults. However, the daily intake of OPFRs via dust inhalation was 3.07E-02,
1.89E-02, and 1.54E-01 pg·kg<sup>-1</sup>for adults, children, and professional
street sweepers, respectively. These findings indicated that the occurrence of OPFRs in
the dust poses a significant risk to children and professional street sweepers.<br/>
© 2017, Science Press. All right reserved.
Number of references:36
Main heading:Dust
Controlled terms:Flame retardants - Gas chromatography - Mass spectrometry - Professional
aspects - Roads and streets
Uncontrolled terms:Contamination levels - Distribution characteristics - Exposure -
Organophosphorus flame retardants - Road dusts
Classification code:406.2 Roads and Streets - 451.1 Air Pollution Sources - 801
Chemistry - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial
Chemicals - 901.1 Engineering Professional Aspects
DOI:10.13227/j.hjkx.201702001
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 19>
Accession number:20174904509392
Title:Characteristics and Health Risk Assessment of Metallic Elements in
PM<inf>2.5</inf>Fraction of Road Dust
Authors:Zhang, Jing (1); Zhang, Yan-Jie (1); Fang, Xiao-Zhen (1); Li, Feng-Hua (1); Wu,
Lin (1); Mao, Hong-Jun (1)
Author affiliation:(1) Center for Urban Transport Emission Research (CUTER), College of
Environmental Science and Engineering, Nankai University, Tianjin; 300071, China
Corresponding author:Wu, Lin(dr.wu@msn.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4071-4076
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to analyze and compare the pollution characteristics and risks to human
health of metallic elements in the PM<inf>2.5</inf>fraction of urban road dust (RD) and
park road dust (PRD), particles smaller than 2.5 μm were suspended to filters by a
re-suspension system and concentrations of Na, Mg, Al, Fe, Cu, Mn, Ni, Sb, Zn, Cd, and Pb
were quantified. Results showed that the average concentrations of Cu and Sb in RD were
626 mg·kg<sup>-1</sup>and 23 mg·kg<sup>-1</sup>, significantly higher than
that in PRD (274 mg·kg<sup>-1</sup>and 11 mg·kg<sup>-1</sup>). This
indicated that the elemental composition of RD was influenced by non-exhaust emissions.
The geoaccumulation Index (I<inf>geo</inf>) of each detected element showed that samples
were strongly to extremely contaminated by Cd (4<I<inf>geo</inf><5), moderately to
strongly contaminated by Cu, Sb, Zn, and Pb (2<I<inf>geo</inf><4), and
uncontaminated to moderately contaminated by Ni and Mn (I<inf>geo</inf><1). The hazard
index (HI) values of Sb, Pb, Cu, Ni, Zn, and Cd were less than 1 and the incremental
lifetime cancer risk (ILCR) values of Ni and Cd were less than 10<sup>-6</sup>,
indicating that these elements of RD and PRD are not associated with any cancer risks or
non-cancer health risks.<br/> © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Health risks
Controlled terms:Antimony - Antimony compounds - Copper - Copper compounds - Diseases -
Dust - Health - Lead - Lead compounds - Magnesium - Manganese - Nickel - Risk assessment
- Roads and streets - Suspensions (components) - Suspensions (fluids) - Transportation -
Zinc
Uncontrolled terms:Average concentration - Elemental compositions - Exhaust emission -
Geo-accumulation index - Hazard indices - Metallic elements - PM2.5 - Road dusts
Classification code:406.2 Roads and Streets - 451.1 Air Pollution Sources - 461.6
Medicine and Pharmacology - 461.7 Health Care - 542.2 Magnesium and Alloys - 543.2
Manganese and Alloys - 544.1 Copper - 546 Lead, Tin, Zinc, Antimony and Alloys - 548.1
Nickel - 601.2 Machine Components - 804 Chemical Products Generally - 914.1 Accidents
and Accident Prevention
Numerical data indexing:Size 2.50e-06m
DOI:10.13227/j.hjkx.201702198
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 20>
Accession number:20174904509400
Title:Eutrophication and Characteristics of Cyanobacteria Bloom in the Summer in Guishi
Reservoir
Authors:Gou, Ting (1); Ma, Qian-Li (1); Wang, Zhen-Xing (1); Wang, Li (1); Yao, Ling-Ai
(1); Xu, Zhen-Cheng (1); Zhao, Xue-Min (1); Liang, Rong-Chang (1); Lan, Yu (1)
Author affiliation:(1) South China Institute of Environmental Sciences, Ministry of
Environmental Protection, Guangzhou; 510655, China
Corresponding author:Zhao, Xue-Min(zhaoxuemin@scies.org)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4141-4150
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Large-scale cyanobacteria bloom occurred in the summer of 2014 in the Guishi
Reservoir that is an important drinking water source for Hezhou City. The dynamic change
regularity, external pollution sources, and the phytoplankton community characteristics
during the bloom were investigated to evaluate the eutrophication in the reservoir and to
present effective prevention and control measures. The results showed that nitrogen and
phosphorus concentrations increased year by year; water quality on some sites has been
out of class II of national water quality standards; and the main pollution source was
the agricultural non-point sources. Phytoplankton cell density was in the range of
8.60×10<sup>6</sup>-5.36×10<sup>8</sup>cells·L<sup>-1</sup>and
chlorophyll a concentrations reached 74.48 μg·L<sup>-1</sup>during the bloom.
The dominant species was Microcystis wesenbergii whose density reached
5.36×10<sup>8</sup>cells·L<sup>-1</sup>. The cell density decreased over
time and concentrated on the surface and at the depth of 2 m underwater. The total
phytoplankton cell density was strongly correlated to total phosphorus, total nitrogen,
nitrate nitrogen, and the permanganate index, and was inversely correlated to
transparency. The water in the Guishi Reservoir was not polluted by microcystic toxins.
Moreover, Guishi Reservoir is in a meso-eutrophic state; therefore, the prevention and
control of the cyanobacteria bloom should focus on weather conditions and on reducing the
input of nitrogen and phosphorus to keep the nutrient levels low.<br/> © 2017,
Science Press. All right reserved.
Number of references:46
Main heading:Reservoirs (water)
Controlled terms:Agriculture - Cells - Cytology - Eutrophication - Nitrogen - Phosphorus
- Phytoplankton - Pollution - Pollution control - Potable water - Water - Water
pollution - Water quality
Uncontrolled terms:Agricultural non-point source pollutions - Chlorophyll-a concentration
- Cyanobacteria blooms - Microcystins - Microcystis wesenbergii - Nitrogen and phosphorus
- Phytoplankton community - Prevention and controls
Classification code:441.2 Reservoirs - 444 Water Resources - 445.2 Water Analysis -
453 Water Pollution - 461.2 Biological Materials and Tissue Engineering - 471 Marine
Science and Oceanography - 804 Chemical Products Generally - 821 Agricultural Equipment
and Methods; Vegetation and Pest Control
Numerical data indexing:Mass_Density 7.45e-05kg/m3, Size 2.00e+00m
DOI:10.13227/j.hjkx.201702098
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 21>
Accession number:20174904509426
Title:Characteristics and Influencing Factors of CH<inf>4</inf>Emissions from the
Drawdown Area of the Three Gorges Reservoir
Authors:Chai, Xue-Si (1); Hao, Qing-Ju (1); Huang, Zhe (1); Fan, Zhi-Wei (1); Jiang,
Chang-Sheng (1)
Author affiliation:(1) Key Laboratory of the Three Gorges Reservoir Region's Eco-
Environment, College of Resources and Environment, Southwest University, Chongqing;
400715, China
Corresponding author:Jiang, Chang-Sheng(jiangcs@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4370-4379
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Five levels (180 m, 175 m, 165 m, 155 m, and 140 m) in a typical drawdown area
in Wangjiagou in the Three Gorges Reservoir were selected to study
CH<inf>4</inf>emissions from subtropical reservoirs. The experimental period lasted two
years from September 2010 to August 2012. The methods of static opaque chambers during
the drainage period and floating chambers during flooding period were used in this study.
The elevations of 175 m, 165 m, and 155 m were all located in the drawdown area, whereas
the 180 m elevation was located in the land and never flooded. The 140 m elevation was
permanently flooded and used as a control area. The results showed that the
CH<inf>4</inf>fluxes showed no significant trends at 175 m and 165 m in the first year of
the experiment, while the fluxes showed a single peak pattern with the climax in the
summer at 155 m and 140 m. At 175 m, the CH<inf>4</inf>emissions showed a single peak
pattern with the climax during its flooding period, and then showed not regular
CH<inf>4</inf>emission sources or sinks alternately in the second year, whereas the
CH<inf>4</inf>fluxes at 165 m, 155 m, and 140 m presented a single-peak shape with winter
climax. During the entire observation period, the CH<inf>4</inf>emission fluxes at 180 m
were stable and showed no obvious peaks. In addition, CH<inf>4</inf>fluxes were higher
during the flooding period than in the drainage period at 175 m, 165 m, and 155 m.The
order of the annual CH<inf>4</inf>cumulative emissions at the five elevations was 140 m
(99.58 kg·hm<sup>-2</sup>)>155 m (82.98 kg·hm<sup>-2</sup>)>165 m
(65.38 kg·hm<sup>-2</sup>)>180 m (6.32 kg·hm<sup>-2</sup>)>175 m
(4.27kg·hm<sup>-2</sup>), suggesting that the soil was more conducive to
CH<inf>4</inf>production when the flooding period was longer. Correlation analysis
indicated that there were no significant correlations between CH<inf>4</inf>fluxes and
the soil carbon component and pH on land and during the drainage period but
CH<inf>4</inf>fluxes increased with the increase in soil water content. There was a
significant linear negative correlation between CH<inf>4</inf>emissions from the gas-
water interface at 140 m and in water. The soil moisture content was one of the key
factors affecting the CH<inf>4</inf>fluxes during the drainage period, while during
flooding period, the CH<inf>4</inf>fluxes were regulated by flooding depth.<br/> ©
2017, Science Press. All right reserved.
Number of references:44
Main heading:Floods
Controlled terms:Carbon - Gas emissions - Phase interfaces - Soil moisture - Soils -
Water levels
Uncontrolled terms:Correlation analysis - Cumulative emissions - Drawdown area - Gas-
water interface - Influencing factors - Negative correlation - Seasonal variation - Three
gorges reservoir
Classification code:483.1 Soils and Soil Mechanics - 801.4 Physical Chemistry - 804
Chemical Products Generally
Numerical data indexing:Size 1.40e+02m, Size 1.55e+02m, Size 1.65e+02m, Size 1.75e+02m,
Size 1.80e+02m
DOI:10.13227/j.hjkx.201702003
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 22>
Accession number:20174904509393
Title:Seasonal Variations in PM<inf>10</inf>and Associated Chemical Species in Jiuxian
Mountain in Fujian Province
Authors:Wei, Ya (1); Lin, Chang-Cheng (2); Hu, Qing-Hua (3); Wu, Shui-Ping (1)
Author affiliation:(1) College of Environment and Ecology, Xiamen University, Xiamen;
361102, China; (2) Meteorology Research Institute of Fujian Province, Fuzhou; 350001,
China; (3) Environmental Monitoring Central Station of Fujian Province, Fuzhou; 350003,
China
Corresponding author:Wu, Shui-Ping(wsp@xmu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4077-4083
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:PM<inf>10</inf>samples were collected at the top of Jiuxian Mountain in Fujian
Province from March 2011 to January 2012 and were analyzed for inorganic water-soluble
ions and dicarboxylic acids to investigate their seasonal variations and sources. The
results showed that PM<inf>10</inf>and its associated species exhibited much higher
levels in the spring than those in other seasons but the total contribution of the nine
species of dicarboxylic acids to PM<inf>10</inf>(0.51%±0.41%) was significantly
lower than that of the water-soluble ions (18.07%±8.73%). The water-soluble ions
were characterized by the highest concentrations of SO<inf>4</inf><sup>2-</sup>and
NO<inf>3</inf><sup>-</sup>, followed by Na<sup>+</sup>and NH<inf>4</inf><sup>+</sup>.
Significant positive correlations were observed between cation and anion equivalents, as
well as between NH<inf>4</inf><sup>+</sup>and SO<inf>4</inf><sup>2-</sup>or
NO<inf>3</inf><sup>-</sup>equivalents. Individual dicarboxylic acid showed a
monotonically decreasing trend with increasing carbon number in which oxalic acid
accounted for approximately 75% of the total dicarboxylic acids. Characteristic ratios of
malonic acid to succinic acid and adipic acid to azelaic acid, MODIS fire spots, and
backward trajectories showed that dicarboxylic acids mainly originated from secondary
reactions in the atmosphere and that the direct contributions of open biomass burning to
dicarboxylic acid concentrations were negligible.<br/> © 2017, Science Press. All
right reserved.
Number of references:28
Main heading:Oxalic acid
Controlled terms:Carbon - Ions - Landforms
Uncontrolled terms:Chemical compositions - Jiuxian Mountain - PM10 - Seasonal variation -
Source identification
Classification code:481.1 Geology - 804 Chemical Products Generally - 804.1 Organic
Compounds
Numerical data indexing:Percentage 7.50e+01%
DOI:10.13227/j.hjkx.201702151
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 23>
Accession number:20174904509431
Title:Remediation of Petroleum-Contaminated Soil Using a Bioaugmented Compost Technique
Authors:Wu, Man-Li (1); Chen, Kai-Li (1); Ye, Xi-Qiong (1); Qi, Yan-Yun (1); Xu, Hui-Ning
(1); Wang, Zhuo (1); Xue, Peng-Fei (1); Zhu, Chang-Lin (1)
Author affiliation:(1) Key Laboratory of Northwest Water Resources, Environment and
Ecology, School of Environmental and Municipal Engineering, Xi'an University of
Architecture and Technology, Xi'an; 710055, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4412-4419
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Bioaugmented compost was created by inoculating petroleum-degrading bacteria
into mature compost. The petroleum hydrocarbon degradation efficiencies were investigated
by applying this enhanced compost to petroleum-contaminated soil under low temperatures.
The results showed that the degrading bacteria can be enriched in the mature compost.
After 30 d of remediation, the removal efficiency of TPH, alkanes, and PAHs in the soil
was 27.0%, 19.6%, and 10.0%, compared to natural attenuation (CK), which was 4.5%, 9.5%,
and 2.3%, respectively. In response to remediation, the relative abundance of
Proteobacteria and Actinobacteria phyla decreased from 53.4% and 25.9% to 48.9% and
14.1%, respectively, and Bacteroidetes phylum increased from 5.0% to 24.5%. At the genus
level, the relative abundance of Acinetobacter and Pseudomonas increased from 0.02% and
3.4% to 15.2% and 4.6%, respectively. The results indicated that the bioaugmented compost
may efficiently facilitate and speed up the bioremediation of petroleum-contaminated soil
under low-temperature conditions. Soil microbial diversity and structure of microbial
communities are sensitive to the remediation.<br/> © 2017, Science Press. All right
reserved.
Number of references:26
Main heading:Soil pollution control
Controlled terms:Bacteria - Biodegradation - Bioremediation - Composting - Contamination
- Degradation - Efficiency - Natural attenuation - Petroleum chemistry - Pollution -
Remediation - Soil pollution - Soils - Temperature
Uncontrolled terms:Illumina - Low temperature conditions - Low temperatures - Microbial
communities - Petroleum hydrocarbons - Petroleum-contaminated soil - Scale-up - Soil
microbial diversity
Classification code:454.2 Environmental Impact and Protection - 461.8 Biotechnology -
483.1 Soils and Soil Mechanics - 513.1 Petroleum Refining, General - 641.1
Thermodynamics - 802.2 Chemical Reactions - 913.1 Production Engineering
Numerical data indexing:Percentage 1.00e+01%, Percentage 1.41e+01%, Percentage 1.96e+01%,
Percentage 2.00e-02%, Percentage 2.30e+00%, Percentage 2.59e+01% to 4.89e+01%, Percentage
2.70e+01%, Percentage 3.40e+00% to 1.52e+01%, Percentage 4.50e+00%, Percentage 4.60e+00%,
Percentage 5.00e+00% to 2.45e+01%, Percentage 5.34e+01%, Percentage 9.50e+00%
DOI:10.13227/j.hjkx.201702056
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 24>
Accession number:20174904509405
Title:Occurrence, Distribution and Health Risk of the Phthalate Esters in Riparian Soil
in the Fluctuating Zone of the Three Gorges Reservoir
Authors:Yang, Ting (1); He, Ming-Jing (1, 2); Yang, Zhi-Hao (1); Wei, Shi-Qiang (1, 2)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400716, China
Corresponding author:He, Ming-Jing(mjhe@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4187-4193
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Soil samples were collected in the fluctuating zone of the Three Gorges
Reservoir to analyze the concentrations and distribution of phthalate esters (PAEs) using
ultra performance liquid chromatography-quadrupole-time of flight mass spectrometry
(UPLC-Q-TOF-MS). Meanwhile, the interrelationships among the PAE congeners were analyzed
and the potential sources of PAEs in soil were determined by the correlation analysis and
principal component analysis. The results showed that the concentrations of ∑PAEs
ranged from 322.0-737.3 ng·g<sup>-1</sup>dry weight, with a mean value of 497.2
ng·g<sup>-1</sup>dry weight, which lies at the low end of the worldwide Figures.
DIBP was the most abundant PAEs congener, followed by DBP and DEHP, contributing to 94.5%
of the total PAEs. However, DEHP was not the main pollutant in this study compared to
other studies, which might be ascribed to the release of DEHP from the flooded soil to
the surrounding water but the degradation by microorganisms in the soil cannot be
completely ruled out. Significant interrelationships were observed among DMP, DEP, DBP,
and DIBP. The principal component analysis showed that DMP, DEP, DBP, and DIBP may have
similar sources. In this study, the daily intake dose was lower than the reference dose
(RfD) proposed by the United States Environmental Protection Agency (USEPA), and the
carcinogenic risk of six PAE congeners was far below the tolerable values proposed by the
USEPA. Nevertheless, the daily intake dose of DBP accounted for 60% to 84% of total PAEs;
thus, more attention should be paid to the potential health risks of DBP.<br/> ©
2017, Science Press. All right reserved.
Number of references:34
Main heading:Soil pollution
Controlled terms:Biodegradation - Correlation methods - Environmental Protection Agency -
Esters - Health - Health risks - Liquid chromatography - Mass spectrometry - Pollution -
Principal component analysis - Reservoirs (water) - Soils - Water pollution - Water
treatment
Uncontrolled terms:Carcinogenic risk - Correlation analysis - Phthalate ester - Potential
health risks - Potential sources - Three gorges reservoir - Ultra performance liquid
chromatography quadrupole time of flight mass spectrometries - United states
environmental protection agencies
Classification code:441.2 Reservoirs - 445.1 Water Treatment Techniques - 453 Water
Pollution - 454.2 Environmental Impact and Protection - 461 Bioengineering and Biology
- 483.1 Soils and Soil Mechanics - 801 Chemistry - 801.2 Biochemistry - 804.1 Organic
Compounds - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 6.00e+01% to 8.40e+01%, Percentage 9.45e+01%
DOI:10.13227/j.hjkx.201703167
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 25>
Accession number:20174904509417
Title:Coking Wastewater Treatment Efficiency and Comparison of Acute Toxicity
Characteristics of the AnMBR-A-MBR and A<sup>2</sup>-MBR Processes
Authors:Zhu, Jia-Di (1); Li, Fei-Fei (1); Chen, Lü-Jun (1, 2)
Author affiliation:(1) School of Environment, Tsinghua University, Beijing; 100084,
China; (2) Zhejiang Provincial Key Laboratory of Water Science and Technology, Yangtze
Delta Region Institute of Tsinghua University, Jiaxing; 314006, China
Corresponding author:Chen, Lü-Jun(chenlj@tsinghua.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4293-4301
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Coking wastewater contains high-strength refractory organic pollutants and is
commonly treated by biological treatment processes. To improve the efficiency of
biological treatment, two laboratory scale processes, anaerobic membrane
bioreactor/anoxic/aerobic membrane bioreactor (AnMBR-A-MBR) and anaerobic/anoxic/aerobic
membrane bioreactor (A<sup>2</sup>-MBR), were developed for coking wastewater treatment.
The removal of main pollutants and the stability of different pollutant loadings were
compared under the optimum operating conditions. Acute toxicity distribution, variations,
and toxic matter characteristics of the two processes were investigated by solid-phase
extraction, components separation, the luminous bacteria Q67 test, and three-dimensional
fluorescence spectrometry. The results showed that the organic pollutant removal rate of
AnMBR was 15.3%, which was significantly higher than the anaerobic stage of the
A<sup>2</sup>-MBR system (3.4%), and the AnMBR-A-MBR system had greater resistance to
pollutant loading. Acute toxicity of AnMBR-A-MBR system in each stage effluent was lower
than the A<sup>2</sup>-MBR system and the total toxic unit removal rate of both were
85.2% and 79.2%, respectively. The acute toxicity of the polar component in each stage
effluent was the highest, and the polar and mid-polar components contributed to the
majority of the toxicity. The toxicity of each stage effluent mainly originated from
Region II aromatic protein analogues, which could be the main acute toxicity substances
of the polar component.<br/> © 2017, Science Press. All right reserved.
Number of references:23
Main heading:Toxicity
Controlled terms:Biochemical engineering - Bioconversion - Biological water treatment -
Bioluminescence - Bioreactors - Efficiency - Effluents - Fluorescence spectroscopy -
Organic pollutants - Phase separation - Pollution - Wastewater treatment
Uncontrolled terms:Acute toxicity - Anaerobic membrane bioreactor - Biological treatment
process - Coking wastewater - Coking wastewater treatments - Comparative analysis -
Optimum operating conditions - Three-dimensional fluorescences
Classification code:445.1 Water Treatment Techniques - 452.3 Industrial Wastes - 452.4
Industrial Wastes Treatment and Disposal - 461.7 Health Care - 461.8 Biotechnology -
641.1 Thermodynamics - 741.1 Light/Optics - 741.3 Optical Devices and Systems - 801.2
Biochemistry - 804.1 Organic Compounds - 805.1.1 Biochemical Engineering - 913.1
Production Engineering
Numerical data indexing:Percentage 1.53e+01%, Percentage 3.40e+00%, Percentage 7.92e+01%,
Percentage 8.52e+01%
DOI:10.13227/j.hjkx.201703186
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 26>
Accession number:20174904509416
Title:Enhanced Antibiotic Resistant Bacteria Removal from Wastewater Treatment Plant by
Different Disinfection Technologies
Authors:Liu, Ya-Lan (1); Ma, Cen-Xin (1); Ding, He-Zhou (1); Qiu, Yong (2); Li, Bing (2);
Wang, Shuo (1, 3, 4); Li, Ji (1, 3, 4)
Author affiliation:(1) School of Environment and Civil Engineering, Jiangnan University,
Wuxi; 214122, China; (2) School of Environment, Tsinghua University, Beijing; 100084,
China; (3) Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi;
214122, China; (4) Jiangsu College of Water Treatment Technology and Material
Collaborative Innovation Center, Suzhou; 215009, China
Corresponding author:Li, Ji(lji18@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4286-4292
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Based on the removal of total heterotrophic bacteria (HPC) and antibiotic
resistant bacteria (ARB), including the ampicillin resistant bacteria (AMP), erythromycin
resistant bacteria (ERY), tetracycline resistant bacteria (TET), kanamycin resistant
bacteria (KAN), and ciprofloxacin resistant bacteria (CIP), this study investigates the
enhanced removal performance of ARB by different disinfection technologies. The
experimental results showed that ARB removal by ultraviolet (UV) disinfection from the
wastewater treatment plant (WWTP) was only 18.2%-40.9% and AMP was the highest in
content. ERY could be selectively removed by different disinfection technologies;
however, there was no distinguished selective removal performance for other four types of
ARB (P<0.05). For ARB, COD and NH<inf>4</inf><sup>+</sup>-N removal, the optimal
ozone, chlorination, and UV concentration or dosage were 5.0 mg·L<sup>-1</sup>,
25.0 mg·L<sup>-1</sup>, and 45.0 mJ·cm<sup>-2</sup>, respectively, and the
corresponding ARB removal efficiencies were 45.5%-74.5%, 66.1%-85.5%, and 68.6%-85.5%.
Furthermore, the combined UV and chlorine treatment could achieve better ARB removal
performance.<br/> © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Wastewater treatment
Controlled terms:Antibiotics - Bacteria - Disinfection - Ozone - Reclamation - Sewage
pumping plants - Water treatment plants
Uncontrolled terms:Antibiotic-resistant bacteria - Ozone disinfection - Sodium
hypochlorites - Ultraviolet disinfections - Wastewater treatment plants
Classification code:445.1 Water Treatment Techniques - 452.2 Sewage Treatment - 452.4
Industrial Wastes Treatment and Disposal - 461.6 Medicine and Pharmacology - 804
Chemical Products Generally
Numerical data indexing:Mass_Density 2.50e-02kg/m3, Mass_Density 5.00e-03kg/m3,
Percentage 1.82e+01% to 4.09e+01%, Percentage 4.55e+01% to 7.45e+01%, Percentage 6.86e
+01% to 8.55e+01%
DOI:10.13227/j.hjkx.201612141
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 27>
Accession number:20174904509387
Title:Source Apportionment and Size Distribution of Aerosols at Lin'an Atmosphere
Regional Background Station During Winter
Authors:Shi, Shuang-Shuang (1); Wang, Hong-Lei (1); Zhu, Bin (1); Lin, Xu (2); Guo, Ting
(3); Sha, Dan-Dan (1); Jiang, Lin (1); Zhang, Yu-Xin (1); Shi, Yuan-Zhe (1)
Author affiliation:(1) Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters, Key Laboratory for Aerosol-Cloud-Precipitation of China
Meteorological Administration, Nanjing University of Information Science &
Technology, Nanjing; 210044, China; (2) Hangzhou Environmental Monitoring Center,
Hangzhou; 310007, China; (3) Bengbu Meteorological Bureau, Bengbu; 233040, China
Corresponding author:Zhu, Bin(binzhu@nuist.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4024-4033
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Using a wide-range particle spectrometer (WPS), an environmental management
system (EMS), KC-120H middle volume sampler, a 850 professional ion chromatography
analyzer, and heat/light carbon analyzer (DRI2001A), we observed the number concentration
of aerosols with sizes ranging from 10 nm to 10 μm, gas concentrations, and
concentrations of PM<inf>2.5</inf>, water-soluble ions, OC, and EC in a Lin'an
atmospheric background station from January 9 to 31, 2015. The positive matrix
factorization (PMF) model was applied for source apportionment, and the size distribution
and diurnal variations of emission sources were analyzed based on the meteorological
data. The average aerosol concentration was 5 062 cm<sup>-3</sup>·nm<sup>-
1</sup>and PM<inf>2.5</inf>mass concentration was 123.6 μg·m<sup>-3</sup>. The
average concentrations of NO<inf>3</inf><sup>-</sup>, SO<inf>4</inf><sup>2-</sup>, and
NH<inf>4</inf><sup>+</sup>, the main water-soluble ions in PM<inf>2.5</inf>were 19.2,
15.4, and 10.8 μg·m<sup>-3</sup>, which accounted for 37.9%, 30.4%, and 21.4%
of total water-soluble ions, respectively. Theaverage concentrations of OC and EC were
24.4 μg·m<sup>-3</sup>and 6.6 μg·m<sup>-3</sup>. Secondary aerosol
formation, coal combustion, motor vehicle emissions, dust, andbiomass burning were the
main sources of PM<inf>2.5</inf>in Lin'an during winter with contributions of 42.3%,
21.4%, 17.1%, 8.7%, and 10.6%, respectively. Different sources had different aerosol
number concentration distributions. The aerosol number concentration spectra of secondary
sources, vehicle emissions, dust, and biomass burning followed unimodal-type
distributions with peaks at 120, 50, 100, and 90 nm. Coal particle number concentration
was a bimodal distribution which exhibited peak values at 25 nm and 100 nm (19 842
cm<sup>-3</sup>·nm<sup>-1</sup>and 18 372 cm<sup>-3</sup>·nm<sup>-1</sup>,
respectively). The spectra of surface concentrations of secondary sources, coal
combustion, motor vehicle emissions, dust, and biomass burning followed a three-peak
distribution. The peaks were at 650, 210, 160, 180, and 575 nm. The diurnal variations of
particle number concentrations influenced by diurnal variations in the boundary layer and
human activities were consistent with the variations in surface concentrations, which
displayed bimodal-type distribution.<br/> © 2017, Science Press. All right reserved.
Number of references:54
Main heading:Coal combustion
Controlled terms:Aerosols - Atmospheric aerosols - Boundary layers - Carbon - Coal - Coal
dust - Dust - Environmental management - Environmental management systems - Factorization
- Gas chromatography - Ion chromatography - Ions - Matrix algebra - Meteorology - Size
distribution - Vehicles
Uncontrolled terms:Diurnal variation - Environmental management system (eMS) - Motor
vehicle emissions - Particle number concentration - PM2.5 - Positive Matrix Factorization
- Positive matrix factorization models - Source apportionment
Classification code:443.1 Atmospheric Properties - 451.1 Air Pollution Sources - 454.1
Environmental Engineering, General - 524 Solid Fuels - 801 Chemistry - 802.3 Chemical
Operations - 804 Chemical Products Generally - 921 Mathematics - 921.1 Algebra - 922.2
Mathematical Statistics
Numerical data indexing:Percentage 1.06e+01%, Percentage 1.71e+01%, Percentage 2.14e+01%,
Percentage 3.04e+01%, Percentage 3.79e+01%, Percentage 4.23e+01%, Percentage 8.70e+00%,
Size 1.00e-08m to 1.00e-05m, Size 2.50e-08m, Size 5.75e-07m, Size 9.00e-08m
DOI:10.13227/j.hjkx.201703239
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 28>
Accession number:20174904509403
Title:Spatio-temporal Variations, Contamination and Potential Ecological Risk of Heavy
Metals in the Sediments of Chenghai Lake
Authors:Yu, Zhen-Zhen (1, 2); Liu, En-Feng (1, 3); Zhang, En-Lou (1); Lin, Qi (1, 2);
Shen, Ji (1); Wang, Rong (1); Li, Yan-Ling (1)
Author affiliation:(1) State Key Laboratory of Lake Science and Environment, Nanjing
Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing; 210008,
China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) College
of Geography and Environment, Shandong Normal University, Ji'nan; 250014, China
Corresponding author:Liu, En-Feng(liuenfeng@sdnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4169-4177
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Heavy metals pollution in the sediments is one of the main factors impacting the
water quality and ecosystem health. In this study, concentrations of ten metals in nine
sediment cores from the Chenghai Lake were determined. Chronology of a typical core
(CH2012) was constructed by the<sup>210</sup>Pb and<sup>137</sup>Cs dating method. The
spatio-temporal variations in concentrations and contamination characteristics of As, Cd,
Cu, Hg, Ni, Pb, and Zn were evaluated. The potential eco-risks of heavy metals in the
surface sediments were studied by combining the ecological risk index and sediment
quality guidelines (SQGs) assessment as well as their pollution levels (enrichment
factors, EF). The metal concentrations in each sediment core showed little vertical
change with coefficients of variation of less than 0.20, except for Cd, whose coefficient
of variation was 0.59. Spatially, the average concentrations of each metal showed minor
difference among the cores, with ratios ranging from 1.2 to 1.8, suggesting similar
sedimentary characteristics of metals in the whole lake. Cd and Pb were influenced by
anthropogenic contamination that has started in the mid-1980s. The pollution level of Cd
decreased in the past decade and still belongs to the moderate pollution degree, whereas
the pollution level of Pb increased continually and could be classified as the weak
pollution degree. The Hg contamination began in the late 1990s, with EFs ranging from 0.9
to 1.6, belonging to the weak pollution degree. The As, Cu, and Zn pollution occurred
mainly near the surface sediments with weak pollution degrees. Spatially, there were no
obvious trends in pollution levels of the metals. The heavy metals pollution is mainly
influenced by atmospheric deposition that originates from non-ferrous metal smelting
emissions, as well as agricultural and domestic discharges. As, Cu, Ni, Pb, and Zn in the
surface sediments have low potential ecological risks, whereas Hg and Cd may pose
middle-high potential risks.<br/> © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Lake pollution
Controlled terms:Cadmium - Contamination - Ecology - Ecosystems - Heavy metals - Lakes -
Lead - Metals - Meteorological problems - Nickel - Pollution - Risk assessment -
Sedimentology - Sediments - Smelting - Surficial sediments - Water pollution - Water
quality - Zinc
Uncontrolled terms:Anthropogenic contamination - Atmospheric depositions - Coefficient of
variation - Coefficients of variations - Potential ecological risk - Sediment quality
guideline (SQGs) - Sedimentary characteristics - Spatio-temporal variation
Classification code:443.1 Atmospheric Properties - 445.2 Water Analysis - 453 Water
Pollution - 454.3 Ecology and Ecosystems - 481.1 Geology - 483 Soil Mechanics and
Foundations - 531 Metallurgy and Metallography - 533.2 Metal Refining - 546.1 Lead and
Alloys - 546.3 Zinc and Alloys - 548.1 Nickel - 549.3 Nonferrous Metals and Alloys
excluding Alkali and Alkaline Earth Metals - 914.1 Accidents and Accident Prevention
DOI:10.13227/j.hjkx.201702131
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 29>
Accession number:20174904509391
Title:Pollution Assessment and Source Analysis of Metals in PM<inf>2.5</inf>in Haicang
District, Xiamen City, China
Authors:Zhao, Li-Si (1, 2); Yu, Rui-Lian (1); Xu, Ling-Ling (2); Hu, Gong-Ren (1); Wu,
Xin (2); Chen, Yan-Ting (2)
Author affiliation:(1) Department of Environmental Science and Engineering, Huaqiao
University, Xiamen; 361021, China; (2) Institute of Urban Environment, Chinese Academy of
Sciences, Xiamen; 361021, China
Corresponding author:Yu, Rui-Lian(ruiliany@hqu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4061-4070
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To determine the spatial-temporal distributions and potential sources of metals
in PM<inf>2.5</inf>and assess health risks from heavy metals, 348 PM<inf>2.5</inf>samples
were collected in the Haicang District of Xiamen, China from April 2015 to January 2016.
Metals (K, Ca, Na, Mg, Al, Zn, Cu, Fe, Ti, As, V, Mn, Ba, Co) in PM<inf>2.5</inf>were
detected using an X-ray fluorescence analyzer (XRF). Pollution assessment was performed
via enrichment factor calculation and health risk assessment. Potential sources were
explored using Pearson's correlation coefficient, principal component analysis, and the
HYSPLIT Trajectory Model. Results showed that the total concentration of 14 metal
elements contributed to 5.4%-10.6% of PM<inf>2.5</inf>during the sampling period. The
total concentration of metals was higher in spring and winter than those in summer and
autumn. The concentrations were higher in the port and the industrial areas than in
residential areas and background locations, in agreement with the seasonal and spatial
distribution of PM<inf>2.5</inf>. The frequency of PM<inf>2.5</inf>daily concentrations
exceeding the Chinese Ambient Air Quality Standards was higher in the port and
residential areas in the summer due to operations at the port and the wind direction. Zn
concentration was the highest in the industrial area followed by the background location.
Meanwhile, the highest concentration of V was observed in the port area; V concentration
in the residential area was high in the summer. These variations in Zn and V indicated
that the elements emitted in the polluted areas migrated easily to residential and
background areas. K concentrations were the highest in winter and As showed a higher rate
of exceeding the standard in winter and spring, indicating that activities, such as
biomass burning and coal combustion in the winter severely impacted air quality. The
enrichment factors of Cu, Zn, As, Co, Na, and Mn varied considerably, from 67 to 8,449.
The total risk level for non-carcinogenic heavy metals (Zn, Cu, Mn) was lower than the
average level of risk acceptance (1×10<sup>-6</sup>a<sup>-1</sup>) and Mn
contributed 74%-88% of the total risk level of Zn, Cu, and Mn. The combined results of
the correlation analysis and the principal component analysis revealed that metals in
PM<inf>2.5</inf>were mainly came from re-suspension of ground dust, motor vehicle
emissions, coal combustion, industrial emissions, and heavy oil combustion, with
contributions of 34.5%, 12.5%, 10.6%, and 7.8% respectively. The HYSPLIT Trajectory Model
showed that Xiamen was affected by the local air mass in spring, autumn, and winter, but
not in summer. Moreover, the rise of PM<inf>2.5</inf>in spring and winter was attributed
to air masses traveling through the Yangtze River Delta.<br/> © 2017, Science Press.
All right reserved.
Number of references:32
Main heading:Copper
Controlled terms:Air quality - Air quality standards - Coal combustion - Coal dust -
Correlation methods - Crude oil - Health risks - Heavy metals - Heavy oil production -
Housing - Industrial emissions - Magnetic levitation vehicles - Manganese - Metal
analysis - Metals - Meteorology - Pollution - Principal component analysis - Risk
assessment - River pollution - Sodium - Zinc
Uncontrolled terms:Metal elements - PM2.5 - Pollution assessment - Source analysis -
Xiamen
Classification code:403.1 Urban Planning and Development - 451.1 Air Pollution Sources
- 451.2 Air Pollution Control - 453 Water Pollution - 461.7 Health Care - 511.1 Oil
Field Production Operations - 512.1 Petroleum Deposits - 521 Fuel Combustion and Flame
Research - 524 Solid Fuels - 531 Metallurgy and Metallography - 543.2 Manganese and
Alloys - 544.1 Copper - 546.3 Zinc and Alloys - 549.1 Alkali Metals - 902.2 Codes and
Standards - 914.1 Accidents and Accident Prevention - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 1.06e+01%, Percentage 1.25e+01%, Percentage 3.45e+01%,
Percentage 5.40e+00% to 1.06e+01%, Percentage 7.40e+01% to 8.80e+01%, Percentage 7.80e
+00%
DOI:10.13227/j.hjkx.201702060
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 30>
Accession number:20174904509418
Title:Stability of the CANON Process Based on Real-Time Control Technologies
Authors:Sun, Yan-Fang (1); Han, Xiao-Yu (2, 3, 4); Zhang, Shun-Jun (3, 4); Li, Xing (1);
Cao, Xiang-Sheng (1)
Author affiliation:(1) Key Laboratory of Beijing for Water Quality Science and Water
Environmental Recovery Engineering, College of Architecture and Civil Engineering,
Beijing University of Technology, Beijing; 100124, China; (2) School of Municipal and
Environmental Engineering, Harbin Institute of Technology, Harbin; 150090, China; (3)
Research and Development Center of Beijing Drainage Group Technology, Beijing; 100022,
China; (4) Beijing Engineering Research Center for Wastewater Reuse, Beijing; 100124,
China
Corresponding author:Li, Xing(lixing@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4302-4308
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to achieve the optimization of the CANON process, ensuring the
stability of water quality and increasing the removal rate of ammonia nitrogen, the
stability of CANON process water quality under real-time control was studied in the SBR
reactor. During the experiment, the temperature was controlled at
30℃±1℃ and the pH was 7-8, based on the corresponding relationship
between indirect parameters and nitrogen pollutants, the real-time control strategy was
formulated. The results showed that when the influent ammonia nitrogen concentration was
917-1 540 mg·L<sup>-1</sup>, the residual ammonia nitrogen concentration of 6
mg·L<sup>-1</sup>can be used as the control parameter to meet the requirements of
process stability but the ammonia nitrogen sensor had many problems such as high costs
and large errors. The characteristic points and platforms of pH, DO, and ORP value can be
the automatic control parameters, which can maintain the long-term stable operation of
the CANON process and ensure that the average ammonia nitrogen removal rate is above 99%
and the effluent quality is stable.<br/> © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Quality control
Controlled terms:Ammonia - Automation - Dissolved oxygen - Effluents - Nitrogen -
Nitrogen removal - pH - pH effects - Real time control - Redox reactions - Stability -
Water pollution - Water quality
Uncontrolled terms:Ammonia nitrogen removal - Autotrophic nitrogen removal -
Characteristic point - Control parameters - Oxidation reduction potential - Process
stability - Real-time control strategy - Residual ammonias
Classification code:445.2 Water Analysis - 452.3 Industrial Wastes - 453 Water
Pollution - 731 Automatic Control Principles and Applications - 801.1 Chemistry,
General - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.2 Inorganic
Compounds - 913.3 Quality Assurance and Control
Numerical data indexing:Mass_Density 9.17e-01kg/m3 to 1.54e+00kg/m3, Percentage 9.90e+01%
DOI:10.13227/j.hjkx.201704088
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 31>
Accession number:20174904509409
Title:Cancer Risk of Human Intake of PAH-Contaminated Particles Based on Hand-to-Mouth
Activities
Authors:Tong, Rui-Peng (1); Yang, Xiao-Yi (1); Zhang, Lei (1); Cheng, Meng-Zhao (1)
Author affiliation:(1) School of Resources & Safety Engineering, China University of
Mining and Technology (Beijing), Beijing; 100083, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4228-4235
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The health risk of residents exposed to PAH-contaminated outdoor soil and indoor
dust particles via hand-to-mouth transfer was estimated by developing probabilistic risk
models. The cancer risk was assessed by applying the Monte Carlo method. The results
showed that toddlers, children, and teens were at greatest risk of exposure, followed by
infants, adults, and seniors. The probability of exceeding the acceptable level 10<sup>-
6</sup>was 2% for infants, 5% for toddlers and teens (none of the values were larger than
the upper limit 10<sup>-4</sup>), 15% for children (0.1% of the values were larger than
10<sup>-4</sup>); and 1% and 0.1% for adults and seniors, respectively. Indoor dust posed
a more serious threat than outdoor soil, which accounted for 91% of the total risk;
indoor hard surfaces were the main sources of indoor dust with a contribution of 65%. The
most influential variables were the frequency of hand-to-mouth events (FQ), benzo[a]
pyrene from indoor dust (PEF<inf>j</inf>), dust surface load on horizontal soft surfaces
(DSL<inf>SS</inf>) and hard surfaces (DSL<inf>HS</inf>), and saliva extraction factor
(SE).<br/> © 2017, Science Press. All right reserved.
Number of references:38
Main heading:Health risks
Controlled terms:Diseases - Dust - Monte Carlo methods - Polycyclic aromatic hydrocarbons
- Risk assessment - Risk perception - Risks
Uncontrolled terms:Benzo [a] pyrene - Cancer risk - Dust surface - Hand-to-mouth - Human
intake - Probabilistic risk - Risk of exposures - Upper limits
Classification code:451.1 Air Pollution Sources - 461.7 Health Care - 804.1 Organic
Compounds - 914.1 Accidents and Accident Prevention - 922.2 Mathematical Statistics
Numerical data indexing:Percentage 1.00e+00%, Percentage 1.00e-01%, Percentage 1.50e+01%,
Percentage 2.00e+00%, Percentage 5.00e+00%, Percentage 6.50e+01%, Percentage 9.10e+01%
DOI:10.13227/j.hjkx.201704073
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 32>
Accession number:20174904509432
Title:Effects of Microbial Diversity on Soil Carbon Mineralization
Authors:An, Li-Yun (1); Li, Jun-Jian (1); Yan, Jun-Xia (1); Li, Hong-Jian (1)
Author affiliation:(1) Institute of Loess Plateau, Shanxi University, Taiyuan; 030006,
China
Corresponding author:Li, Jun-Jian(lijunjian@sxu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4420-4426
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Soil microbial community plays an important role in ecosystem functions;
however, little is known about the importance of microbial diversity to the ecosystems.
In this study, serial dilution of soil suspension (10<sup>-1</sup>, 10<sup>-3</sup>, and
10<sup>-5</sup>) was performed and inoculated into the sterilized soils that form the
broadleaf mixed forests in Pangquangou. The change in the carbon mineralization rate and
the pattern of the carbon source utilization were studied by titration, Biolog Eco, and
other experimental methods. The results show that after being incubated for six weeks,
carbon mineralization rate, the cumulative amount of carbon mineralization, average well
color development (AWCD), and diversity index (Shannon, McIntosh, and richness index) of
D1 were significantly higher than those of the D5 treatment. The cumulative amount of
carbon mineralization and AWCD was strongly and inversely correlated with richness.
Principal component analysis and one-way ANOVA also indicated that the patterns of carbon
source utilization of microbially diverse soil were different. Therefore, the loss of
microbial diversity affects the carbon mineralization rate and the pattern of carbon
source utilization, leading to functional changes in terrestrial ecosystems. In the
management of forest soils, the effects of soil microbial diversity on ecosystem
functions should be considered.<br/> © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Mineralogy
Controlled terms:Biodiversity - Ecology - Ecosystems - Forestry - Principal component
analysis - Soils
Uncontrolled terms:Average well color development - Biolog Eco - Carbon source
utilization patterns - Functional diversity - Microbial biodiversity - Soil carbon
mineralizations - Soil microbial community - Soil microbial diversity
Classification code:454 Environmental Engineering - 454.3 Ecology and Ecosystems - 482
Mineralogy - 483.1 Soils and Soil Mechanics - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201702058
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 33>
Accession number:20174904509428
Title:Effects of Bamboo Biochar on Greenhouse Gas Emissions During the Municipal Sludge
Composting Process
Authors:Xiang, Qiu-Jie (1); Yang, Yu-Han (1); Zhang, Cheng (1, 3); Xiang, Xin-Yi (2); Mu,
Zhi-Jian (1, 3)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) School of Geographical and Sciences, Southwest University,
Chongqing; 400715, China; (3) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400715, China
Corresponding author:Zhang, Cheng(zhcheng@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4390-4397
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Effect of adding bamboo biochar into the compost at different dosages on
greenhouse gas emissions was investigated by analyzing the dynamic characteristics of the
process of municipal sludge composting with four different composts (S1: adding 2.5%
bamboo biochar, S2: adding 5% bamboo biochar, S3: adding 10% bamboo biochar, CK: without
bamboo biochar). The results showed that CH<inf>4</inf>emissions mainly occurred during
the heating period and the beginning of the altithermal period, accounting for 99.01%-
99.81% of the total emissions. When the added bamboo biochar is less than 5%,
CH<inf>4</inf>emissions decrease with the increase in the amount of bamboo biochar. If it
is more than 5%, CH<inf>4</inf>emissions will clearly increase. CO<inf>2</inf>emissions
mainly occurred during the heating period and the altithermal period, accounting for
75.65%-86.58% of the total emissions. Adding bamboo biochar can reduce 3.37%-13.48% of
the CO<inf>2</inf>emissions but there is no significant difference between the treatments
(P>0.05). N<inf>2</inf>O emissions mainly occurred during the heating period and the
rotten period. Adding bamboo biochar can reduce the emissions of N<inf>2</inf>O; the more
the amount of bamboo biochar, the less N<inf>2</inf>O emissions (P<0.05). The emission
factors of CK, S1, S2, and S3 were 44.10, 37.57, 35.10, and 35.44 kg·t<sup>-
1</sup>of dry sludge, respectively. S1, S2, and S3 showed 14.81%-20.41% reduction in
greenhouse gas emissions owing to the addition of bamboo biochar, indicating that bamboo
biochar can reduce the carbon emissions in the process of sludge composting.<br/> ©
2017, Science Press. All right reserved.
Number of references:32
Main heading:Gas emissions
Controlled terms:Bamboo - Carbon - Carbon dioxide - Composting - Greenhouse effect -
Greenhouse gases
Uncontrolled terms:Bio chars - Carbon emissions - Dynamic characteristics - Emission
characteristics - Emission factors - Municipal sludge - Sludge composting - Total
emissions
Classification code:451 Air Pollution - 451.1 Air Pollution Sources - 804 Chemical
Products Generally - 804.2 Inorganic Compounds - 811.1 Pulp and Paper
Numerical data indexing:Percentage 1.00e+01%, Percentage 1.48e+01% to 2.04e+01%,
Percentage 2.50e+00%, Percentage 3.37e+00% to 1.35e+01%, Percentage 5.00e+00%, Percentage
7.57e+01% to 8.66e+01%, Percentage 9.90e+01% to 9.98e+01%
DOI:10.13227/j.hjkx.201703224
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 34>
Accession number:20174904509388
Title:Seasonal Variations in Particle Size Distribution and Water-soluble Ion Composition
of Atmospheric Particles in Chengdu
Authors:Tao, Yue-Le (1); Li, Qin-Kai (2, 3); Zhang, Jun (1); Li, Si-Qi (1); Li, Xiao-Dong
(1)
Author affiliation:(1) Institute of Surface-Earth System Science, Tianjin University,
Tianjin; 300072, China; (2) University of Chinese Academy of Sciences, Beijing; 100049,
China; (3) State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry,
Chinese Academy of Sciences, Guiyang; 550081, China
Corresponding author:Li, Xiao-Dong(xiaodong.li@tju.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4034-4043
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Size-resolved atmospheric particles were collected monthly from February 2012 to
January 2013 on the campus of Chengdu University of Technology using the Anderson multi-
stage impactor sampler. The mass concentrations of these samples and the contents of nine
water-soluble ion species were analyzed. The results showed that the annual average
concentrations of PM<inf>2.1</inf>and PM<inf>11</inf>in Chengdu during the sampling
period were (125.9±56.14) μg·m<sup>-3</sup>and (224.5±83.64)
μg·m<sup>-3</sup>, respectively. The highest mass concentration of particulate
matter was observed in winter, followed by spring while the lowest was in autumn. The
average content of water-soluble ions in particulate matter in Chengdu was about 37.15
μg·m<sup>-3</sup>and the order of water-soluble ion mass concentrations was
SO<inf>4</inf><sup>2-</sup>>NO<inf>3</inf><sup>-</sup>>NH<inf>4</inf><sup>
+</sup>>Ca<sup>2+</sup>>Cl<sup>-</sup>>Mg<sup>2+</sup>>K<sup>
+</sup>>Na<sup>+</sup>>F<sup>-</sup>. Meanwhile, SO<inf>4</inf><sup>2-</sup>,
NO<inf>3</inf><sup>-</sup>, and NH<inf>4</inf><sup>+</sup>were the major water-soluble
ionic components that accounted for 78% of total water-soluble ions. Unimodal
distribution was observed for SO<inf>4</inf><sup>2-</sup>, NO<inf>3</inf><sup>-</sup>,
and NH<inf>4</inf><sup>+</sup>mainly in fine particles, while Ca<sup>2+</sup>and F<sup>-
</sup>were concentrated in coarse particles and their distribution was also unimodal.
Similar size distributions were found for Cl<sup>-</sup>and K<sup>+</sup>, as well as
Mg<sup>2+</sup>and Na<sup>+</sup>, both of which were bimodal. The content of water-
soluble ions in both fine and coarse particles during winter and spring was significantly
higher than that in summer and autumn in Chengdu. Based on the correlation analysis for
major ions, SO<inf>4</inf><sup>2-</sup>, NO<inf>3</inf><sup>-</sup>, and
NH<inf>4</inf><sup>+</sup>in fine particles are likely in the form of (NH<inf>4</inf>)
<inf>2</inf>SO<inf>4</inf>, NH<inf>4</inf>HSO<inf>4</inf>, and
NH<inf>4</inf>NO<inf>3</inf>. In coarse particles, the major water-soluble ions (i.e.
SO<inf>4</inf><sup>2-</sup>, NO<inf>3</inf><sup>-</sup>, and Ca<sup>2+</sup>) might exist
in the forms of Ca(NO<inf>3</inf>)<inf>2</inf>and CaSO<inf>4</inf>. The secondary
formation processes, soil dust, and biomass burning are the major sources of water-
soluble ion species in the particulate matter in Chengdu.<br/> © 2017, Science
Press. All right reserved.
Number of references:46
Main heading:Ions
Controlled terms:Calcium - Calcium compounds - Nitrogen compounds - Particle size -
Particle size analysis - Size distribution
Uncontrolled terms:Annual average concentration - Atmospheric particles - Chengdu -
Correlation analysis - Mass concentration - Source - Unimodal distribution - Water-
soluble ions
Classification code:549.2 Alkaline Earth Metals - 922.2 Mathematical Statistics - 951
Materials Science
Numerical data indexing:Percentage 7.80e+01%
DOI:10.13227/j.hjkx.201702175
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 35>
Accession number:20174904509327
Title:Ozone Deposition and Risk Assessment for a Winter Wheat Field: Partitioning Between
Stomatal and Non-stomatal Pathways
Authors:Xu, Jing-Xin (1); Zheng, You-Fei (1, 2); Zhao, Hui (1); Chu, Zhong-Fang (2);
Huang, Qi-Qing (2); Yuan, Yue (2)
Author affiliation:(1) Key Laboratory for Aerosol-Cloud-Precipitation of China
Meteorological Administration, Nanjing University of Information Science &
Technology, Nanjing; 210044, China; (2) Collaborative Innovation Center of Atmospheric
Environment and Equipment Technology, Nanjing University of Information Science &
Technology, Nanjing; 210044, China
Corresponding author:Zheng, You-Fei(xjx_0718@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4427-4437
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To better understand the ozone deposition and risk assessment over
agroecosystems based on the ozone flux indices, an eddy-covariance system was used for
measuring the ozone deposition continuously and dynamically in a winter wheat field. We
analyzed the variations in ozone concentration, total ozone flux, and stomatal and non-
stomatal flux. The relationships between stomatal/non-stomatal ozone deposition velocity
and the main meteorological factors were investigated. Finally, the yield losses of
winter wheat based on the ozone-dose index (AOT40) and ozone flux index
(DF<inf>s</inf>06) were calculated. Results showed that average daily ozone concentration
(c<inf>O3</inf>) was 32.9 nL·L<sup>-1</sup>. The daytime (08:00-18:00) and
nighttime total ozone flux (F<inf>O3</inf>) were -7.6 nmol·
(m<sup>2</sup>·s)<sup>-1</sup>and -3.1 nmol·(m<sup>2</sup>·s)<sup>-
1</sup>, respectively, and the mean diurnal F<inf>O3</inf>was -5.1 nmol·
(m<sup>2</sup>·s)<sup>-1</sup>. The mean daily stomatal ozone flux (F<inf>s</inf>)
and non-stomatal ozone flux (F<inf>ns</inf>) ranged from 0 to -5.1 nmol·
(m<sup>2</sup>·s)<sup>-1</sup>and from -1.43 to -10.31 nmol·
(m<sup>2</sup>·s)<sup>-1</sup>, respectively. The mean diurnal F<inf>s</inf>and
F<inf>ns</inf>were -1.43 nmol·(m<sup>2</sup>·s)<sup>-1</sup>and -3.66
nmol·(m<sup>2</sup>·s)<sup>-1</sup>. High solar radiation (SR), high
temperature (T), and moderate humidity were used to analyze stomatal ozone deposition;
high SR, moderate T, and high humidity were suitable to analyze non-stomatal ozone
deposition. The cumulative total ozone flux (DF<inf>O3</inf>), cumulative stomatal ozone
flux (DF<inf>s</inf>), and cumulative non-stomatal ozone flux (DF<inf>ns</inf>) were
31.58, 9.99, and 21.59 mmol·m<sup>-2</sup>during the entire experimental period,
and DF<inf>s</inf>and DF<inf>ns</inf>accounted for 32% and 68% of DF<inf>O3</inf>. The
ranges of yield loss in winter wheat were estimated at 11.58%-20.37% and 20%-23.56% using
different assessment models based on the ozone dose index AOT40 and ozone flux index
DF<inf>s</inf>06, respectively.<br/> © 2017, Science Press. All right reserved.
Number of references:59
Main heading:Ozone
Controlled terms:Crops - Deposition - Ozone layer - Risk assessment
Uncontrolled terms:Deposition velocities - Eddy covariance systems - Meteorological
factors - Ozone concentration - Ozone dry deposition - Stomatal and non-stomatal pathways
- Stomatal ozone fluxes - Winter wheat
Classification code:802.3 Chemical Operations - 804 Chemical Products Generally - 821.4
Agricultural Products - 914.1 Accidents and Accident Prevention
Numerical data indexing:Percentage 1.16e+01% to 2.04e+01%, Percentage 2.00e+01% to 2.36e
+01%, Percentage 3.20e+01%, Percentage 6.80e+01%
DOI:10.13227/j.hjkx.201702122
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 36>
Accession number:20174904509395
Title:Analysis of Atmospheric Particulate Matter Pollution Characteristics by LIDAR in
Beijing During Spring Festival, 2016
Authors:Shi, Lin-Lin (1); Li, Ling-Jun (2); Li, Qian (2); Jiang, Lei (2); Zhou, Yi-Ming
(2); Li, Yun-Ting (2); Liu, Bao-Xian (2); Zhang, Da-Wei (2)
Author affiliation:(1) College of Environmental and Energy Engineering, Beijing
University of Technology, Beijing; 100124, China; (2) Beijing Municipal Environmental
Monitoring Center, Beijing; 100048, China
Corresponding author:Zhang, Da-Wei(Zhangdawei@bjmemc.com.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4092-4099
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Real-time aerosol extinction retrieved by Micro-pulse LIDAR and concentrations
of PM<inf>2.5</inf>and PM<inf>10</inf>in Beijing were analyzed to investigate the air
quality during the Spring Festival. The results showed that fireworks on the New Year's
Eve resulted in a sharp increase in particulate matter concentrations in a short time.
The maximum concentration of PM<inf>2.5</inf>at Guanyuan station was 639.3
μg·m<sup>-3</sup>, which increased by nearly 30 times in 9 h. The maximum
hourly concentration of particulate matter at Dingling and Liulihe suburban stations were
significantly higher than that in Guanyuan station, the maximum values were more than 1
000 μg·m<sup>-3</sup>. The particulate matter levels were continuously high on
February 10-12 and the concentration of particulate matter at Dingling and Liulihe
suburban stations were higher than that at Guanyuan. LIDAR results showed no obvious
changes in the extinction coefficient at Dingling on the New Year's Eve. The extinction
coefficient at Liulihe was greater than 1 km<sup>-1</sup>, but the particulate matter
pollution was concentrated at altitudes less than 400 m. The extinction coefficient at
Chegongzhuang was still higher than 0.4 km<sup>-1</sup>at 500 m; however, the duration of
pollution was shorter than that of Liulihe. The extinction coefficients at 105 m at all
three stations during the New Year's Eve were significantly higher than those at 405 m.
There were significant differences in the vertical extinction characteristics of the
three sites. The background maximum values of Dingling, Chegongzhuang, and Liulihe were
0.09 km<sup>-1</sup>, 0.20 km<sup>-1</sup>, and 0.19 km<sup>-1</sup>under 1.0 km,
respectively. The maximum extinction coefficients at 00:00 (midnight) were 0.23 km<sup>-
1</sup>, 1.36 km<sup>-1</sup>, and 1.19 km<sup>-1</sup>, which were 2.6 times, 6.8 times,
and 6.0 times higher than the background value at the same time, respectively. In
summary, discharge of fireworks led to a dramatic increase in the extinction coefficient
of particulate matter. Temperature inversion and lower wind speeds were the main
meteorological factors that contributed to this pollution event.<br/> © 2017,
Science Press. All right reserved.
Number of references:37
Main heading:Optical radar
Controlled terms:Air quality - Atmospheric temperature - Explosives - Particles
(particulate matter) - Pollution
Uncontrolled terms:Atmospheric particulate matter - Extinction characteristics -
Extinction coefficients - Fireworks - Maximum concentrations - Particulate Matter -
Particulate matter pollution - Temperature inversions
Classification code:443.1 Atmospheric Properties - 451.2 Air Pollution Control - 716.2
Radar Systems and Equipment - 951 Materials Science
Numerical data indexing:Size 1.00e+03m, Size 1.05e+02m, Size 4.00e+02m, Size 4.05e+02m,
Time 3.24e+04s
DOI:10.13227/j.hjkx.201702107
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 37>
Accession number:20174904509399
Title:Analysis of Temporal and Spatial Variations in Trace Element Migration in Karst
Critical Zone: An Example of Jiguan Cave, Henan
Authors:Liang, Sha (1, 2); Yang, Yan (1, 2); Zhang, Na (1, 2); Sun, Zhe (1, 2); Zhang,
Ping (1, 2); Tian, Ning (1, 2); Ling, Xin-You (3); Ren, Xiao-Min (3)
Author affiliation:(1) Chongqing Key Laboratory of Karst Environment, School of
Geographical Sciences, Southwest University, Chongqing; 400715, China; (2) Field
Scientific Observation & Research Base of Karst Eco-environments at Nanchuan in
Chongqing, Ministry of Land and Resources of China, Chongqing; 408435, China; (3)
Administrative Office of Luoyang Jiguan Cave, Luanchuan; 471500, China
Corresponding author:Yang, Yan(yy2954@gmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4130-4140
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To explore the temporal and spatial variations and the process of trace element
migration in the karst critical zone, continuous fixed-point monitoring and sampling
analysis was applied to measure each cave system component, which includes rainfall,
soils, bedrock, drip waters, and their aerial sediment. Approximately 650 experimental
data were obtained from October 2009 to May 2015 in a typical karst critical zone in
north China-an interactive zone of the Jiguan Cave in the west Henan Province. The
variations in and the migration rules of Ca, Mg, Ba, Sr, and δ<sup>13</sup>C as
well as their ratios to different components were studied. The results show that: (1)
Soil and bedrock are the main sources of drip water. The values of Mg, Ba, and Sr are
consistent with the “soil-bedrock” two end-members model and their respective
proportions are 43.6:56.4, 1.01:98.09, and 47.2:52.8. (2) From the spatial perspective,
element migration of each component in the cave system interactive zone is interrelated.
Drip water inherits the signals of the soil and bedrock and the modern sediment can
continue the element information of the drip water. Elements in the soil profile cause
the leaching and deposition effect and the subsoil better inherits the information of
trace elements in the bedrock. (3) From the temporal perspective, the migration of
elements in the cave system interactive zone is complex. Because of the leaching effect,
soil and drip water show obvious seasonal discrepancies. However, under the influence of
karst water migration path, the prior calcite precipitation (PCP), and extreme arid and
annual precipitation type, the seasonal discrepancy in the element concentrations in drip
water is smaller than in soil. The PCP effect, selective leaching, and other factors
change the continuity of elements released from sediment to drip water. (4) In order to
systematically and comprehensively ascertain the trace element migration in the karst
critical zone and energy transformation rules, the study of cave system should be based
on the research of the cave's critical zone and should consider comprehensive information
ranging from the atmospheric origins to secondary sediments.<br/> © 2017, Science
Press. All right reserved.
Number of references:34
Main heading:Trace elements
Controlled terms:Landforms - Leaching - Sediments - Soils - Trace analysis
Uncontrolled terms:Comprehensive information - Critical zones - Drip waters - Element
concentrations - Energy transformation - Prior calcite precipitations - Spatial temporals
- Temporal and spatial variation
Classification code:481.1 Geology - 483 Soil Mechanics and Foundations - 483.1 Soils
and Soil Mechanics - 801 Chemistry - 802.3 Chemical Operations
DOI:10.13227/j.hjkx.201703140
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 38>
Accession number:20174904509396
Title:Influence Factors and Sensitivity of Ozone Formation in Langfang in the Summer
Authors:Li, Lei (1); Zhao, Yu-Mei (2); Wang, Xu-Guang (1); Liu, Wei (1); Tong, Jie (1);
Song, Li-Yun (2); Li, Huai-Rui (2); Wang, Qing-Chuan (3)
Author affiliation:(1) Langfang Bureau of Environmental Protection, Langfang; 065000,
China; (2) Academy of Ecology Industrialization for Wisdom Environment (Langfang),
Langfang; 065000, China; (3) Langfang Bureau of Meteorology, Langfang; 065000, China
Corresponding author:Zhao, Yu-Mei(zhao1989@mail.ustc.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4100-4107
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The diurnal variations in ozone concentrations in the summer were studied using
the temperature, wind speed and direction, total cloud cover, and solar radiation
intensity data collected in Langfang, China. The ratio of volatile organic compounds to
nitrogen oxides (VOCs/NO<inf>x</inf>) and the EKMA curve were studied to analyze the
sensitivity of ozone formation. The results showed that: (1) The ozone generation rate
and ozone concentrations were positively correlated with the solar radiation intensity
with Pearson correlation coefficients of 0.61 and 0.48, respectively. Both the ozone
generation rate and the solar radiation intensity reached their peak at about 12:00,
while the ozone concentration reached its peak at about 16:00, which lagged behind the
peak of the solar radiation intensity by 4 h. (2) The correlation coefficient between the
ozone generation rate and the temperature was 0.44, between the ozone concentration and
temperature was 0.68. The ozone generation rate and ozone concentrations were inversely
correlated with total cloud cover with correlation coefficients of -0.24 and -0.45,
respectively. (3) The ozone concentrations in Langfang were high when the winds were from
the west, south, or southeast. (4) The ozone concentrations in Langfang were more
sensitive to VOCs than to NO<inf>x</inf>; thus, they can be reduced efficiently by
controlling the VOCs emissions.<br/> © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Ozone
Controlled terms:Correlation methods - Nitrogen oxides - Solar radiation - Volatile
organic compounds - Wind
Uncontrolled terms:Control area - Correlation coefficient - Langfang - Meteorological
factors - Ozone concentration - Pearson correlation coefficients - Solar radiation
intensity - Wind speed and directions
Classification code:443.1 Atmospheric Properties - 657.1 Solar Energy and Phenomena -
804 Chemical Products Generally - 922.2 Mathematical Statistics
Numerical data indexing:Time 1.44e+04s
DOI:10.13227/j.hjkx.201703270
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 39>
Accession number:20174904509427
Title:Effects of Plastic Film Mulching on Nitrous Oxide Emissions from a Vegetable Field
Authors:Feng, Di (1); Hao, Qing-Ju (1); Zhang, Kai-Li (1); Shi, Jiang-Lai (1); Shi,
Xiao-Jun (1, 2); Jiang, Chang-Sheng (1)
Author affiliation:(1) Key Laboratory of Eco-environments in Three Gorges Reservoir
Region of Ministry of Education, College of Resources and Environment, Southwest
University, Chongqing; 400715, China; (2) National Monitoring Station of Soil Fertility
and Fertilizer Efficiency on Purple Soils, Chongqing; 400715, China
Corresponding author:Jiang, Chang-Sheng(jiangcs@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4380-4389
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Considering the common cropping system (chili-radish rotation) in Southwest
China, the objective of this study is to explore the effect of plastic film mulching on
N<inf>2</inf>O flux, N<inf>2</inf>O concentrations in the soil profile, soil temperature,
and humidity from a vegetable field. The method of the static opaque chamber was used and
the experimental period lasted for one year. The results showed that the average flux of
N<inf>2</inf>O was 1000.0 μg·(m<sup>2</sup>·h)<sup>-1</sup>in the
conventional treatment and 400.6 μg·(m<sup>2</sup>·h)<sup>-1</sup>in the
film mulching treatment during the chili growing period. The N<inf>2</inf>O flux of the
film mulching treatment was significantly lower than that of conventional treatment
(P<0.05). However, in the radish growing season, the N<inf>2</inf>O flux of the film
mulching treatment was higher than that of conventional treatment, but the difference
between the two treatments was not significant (P>0.05). N<inf>2</inf>O concentrations
in the soil profile of the two treatments both increased with the increase in soil depth.
The N<inf>2</inf>O concentrations showed significant correlations among the different
soil profiles of each treatment; meanwhile, there was also a significant correlation
between soil N<inf>2</inf>O concentrations at the same soil depth in different
treatments. There was a significant positive correlation between the N<inf>2</inf>O
concentration in different profiles and N<inf>2</inf>O fluxes in surface soils in the
conventional treatment, but the N<inf>2</inf>O flux under the plastic mulching film
treatment was only positively correlated with the N<inf>2</inf>O concentrations of 30 cm
deep soil. The soil moisture and temperature observations showed that the effect of
plastic film mulching on soil temperature was more significant in summer and the soil
moisture was more prominent in autumn and winter. However, the results of the correlation
analysis and principal component analysis showed that N<inf>2</inf>O emissions were
mainly determined by the distribution of nitrogen in the soil and were affected by the
change in soil total nitrogen content in the conventional treatment but N<inf>2</inf>O
emissions were more sensitive to the variation in soil inorganic nitrogen in the film
mulching treatment.<br/> © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Soil pollution
Controlled terms:Moisture - Nitrogen - Nitrogen oxides - Plastic films - Principal
component analysis - Soil moisture - Soil surveys - Soils - Temperature - Vegetables
Uncontrolled terms:Conventional treatments - Influencing factors - Nitrous oxide
emissions - Plastic film mulching - Positive correlations - Southwestern China -
Temperature observations - Vegetable Field
Classification code:483.1 Soils and Soil Mechanics - 641.1 Thermodynamics - 804
Chemical Products Generally - 804.2 Inorganic Compounds - 817.1 Polymer Products -
821.4 Agricultural Products - 922.2 Mathematical Statistics
Numerical data indexing:Size 3.00e-01m
DOI:10.13227/j.hjkx.201702002
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 40>
Accession number:20174904509328
Title:Progress in the Studies of Precipitation Chemistry in Acid Rain Areas of Southwest
China
Authors:Zhou, Xiao-De (1, 2); Xu, Zhi-Fang (1, 2); Liu, Wen-Jing (1, 2); Wu, Yao (1, 2);
Zhao, Tong (1, 2); Jiang, Hao (1, 2)
Author affiliation:(1) Institute of Geology and Geophysics, Chinese Academy of Sciences,
Beijing; 100029, China; (2) University of Chinese Academy of Sciences, Beijing; 100049,
China
Corresponding author:Xu, Zhi-Fang(zfxu@mail.iggcas.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4438-4446
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The precipitation data for nine sites in the acid rain area of southwest China
were analyzed. The data included pH and the concentrations of major ions (Cl<sup>-</sup>,
SO<inf>4</inf><sup>2-</sup>, NO<inf>3</inf><sup>-</sup>, Ca<sup>2+</sup>,
NH<inf>4</inf><sup>+</sup>, Mg<sup>2+</sup>, K<sup>+</sup>, and Na<sup>+</sup>).
SO<inf>4</inf><sup>2-</sup>and NO<inf>3</inf><sup>-</sup>were the main anions, whereas
Ca<sup>2+</sup>and NH<inf>4</inf><sup>+</sup>were the main cations in the precipitation.
The concentrations of acidic ions, alkaline ions, and total ions in this area were
significantly higher than those reported in southeast China, but much lower than those in
northern China. About 58% of the total precipitation has a pH value ranging from 4.5 to
5.6. According to the correlation of acidic and alkaline ions as well as the results of
the neutralization factor, the rainwater in this area has been neutralized.
Ca<sup>2+</sup>and NH<inf>4</inf><sup>+</sup>are the dominant neutralization substances
in rainwater. Comparisons of pH and the main ion components with other areas showed that
rainfall neutralization in this area was stronger than that in southeast China but poorer
than that in northern China. Calculation of enrichment factors for rainwater components
relative to soil and seawater indicated that Ca<sup>2+</sup>and Mg<sup>2+</sup>mainly
originated from terrestrial sources and SO<inf>4</inf><sup>2-</sup>and
NO<inf>3</inf><sup>-</sup>were mostly attributed to the anthropogenic activities in this
area. In addition, approximately 99.7% of Ca<sup>2+</sup>and 84.0% of Mg<sup>2+</sup>were
attributed to terrestrial sources and were closely related to the widespread distribution
of carbonate rocks in the southwest of China.<br/> © 2017, Science Press. All right
reserved.
Number of references:45
Main heading:Rain
Controlled terms:Acid rain - Alkalinity - Calcium - Ions - pH - Precipitation (chemical)
- Precipitation (meteorology)
Uncontrolled terms:Anthropogenic activity - Enrichment factors - Neutralization -
Neutralization factor - Precipitation chemistry - Precipitation data - Southwest China -
Total precipitation
Classification code:443.3 Precipitation - 451.1 Air Pollution Sources - 549.2 Alkaline
Earth Metals - 801.1 Chemistry, General - 802.3 Chemical Operations
Numerical data indexing:Percentage 5.80e+01%, Percentage 8.40e+01%, Percentage 9.97e+01%
DOI:10.13227/j.hjkx.201702069
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 41>
Accession number:20174904509389
Title:Seasonal Variation and Source Apportionment of Water-Soluble Ions in
PM<inf>2.5</inf>in Quanzhou City
Authors:Zhang, Yun-Feng (1, 2); Yu, Rui-Lian (1); Hu, Gong-Ren (1); Sun, Jing-Wei (1, 2);
Zhang, Zong-Wei (1); Xu, Wen-Zhi (3)
Author affiliation:(1) Department of Environmental Science and Engineering, Huaqiao
University, Xiamen; 361021, China; (2) School of Resources and Environmental Science,
Quanzhou Normal University, Quanzhou; 362000, China; (3) Quanzhou Environmental
Supervising Detachment, Quanzhou; 362000, China
Corresponding author:Hu, Gong-Ren(grhu@hqu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4044-4053
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In this study, the seasonal characteristics of water-soluble ions (WSIs) present
in fine particulate matter (PM<inf>2.5</inf>) in Quanzhou City were investigated.
PM<inf>2.5</inf>samples were collected at five different sites in the city from March
2014 to January 2015 and the concentrations of Na<sup>+</sup>, NH<inf>4</inf><sup>
+</sup>, K<sup>+</sup>, Ca<sup>2+</sup>, Mg<sup>2+</sup>, F<sup>-</sup>, Cl<sup>-</sup>,
NO<inf>3</inf><sup>-</sup>, and SO<inf>4</inf><sup>2-</sup>were determined by ion-
exchange chromatography. In order to identify the sources of these WSIs, the positive
matrix factorization (PMF) analysis was applied. The seasonal variations in total WSI
concentrations were found to decrease in the order of
spring>winter>summer>autumn. The ions SO<inf>4</inf><sup>2-</sup>,
NO<inf>3</inf><sup>-</sup>, and NH<inf>4</inf><sup>+</sup>were the major WSIs found in
PM<inf>2.5</inf>, accounting for 90.3%±3.3%, 68.8%±11.7%,
78.9%±7.1%, and 74.0%±18.4% of the total amount of ions found in spring,
summer, autumn, and winter, respectively. These results suggested that the level of
secondary ions was relatively high in the spring season. The anion-to-cation ratio in
each of the four seasons was less than one, which indicated that PM<inf>2.5</inf>in
Quanzhou City was slightly alkaline. Furthermore, NH<inf>4</inf><sup>+</sup>ions in
PM<inf>2.5</inf>mostly existed in the form of (NH<inf>4</inf>)<inf>2</inf>SO<inf>4</inf>,
NH<inf>4</inf>HSO<inf>4</inf>, and NH<inf>4</inf>NO<inf>3</inf>during spring and winter,
while they were primarily found as NH<inf>4</inf>HSO<inf>4</inf>and
NH<inf>4</inf>NO<inf>3</inf>in the summer and autumn seasons. PMF analysis revealed that
marine salt, secondary sources, fugitive dust from construction, municipal incineration,
and biomass burning were the main potential sources of the ionic components of
PM<inf>2.5</inf>.<br/> © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Particles (particulate matter)
Controlled terms:Chromatographic analysis - Chromatography - Factorization - Incineration
- Ion chromatography - Ion exchange - Ions - Nitrogen compounds
Uncontrolled terms:PM2.5 - Quanzhou city - Seasonal variation - Source - Water-soluble
ions
Classification code:801 Chemistry - 802.2 Chemical Reactions - 921 Mathematics - 951
Materials Science
DOI:10.13227/j.hjkx.201703108
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 42>
Accession number:20174904509397
Title:Impact of Human Activities on Water-Rock Interactions in Surface Water of Lijiang
River
Authors:Zhao, Hai-Juan (1, 2); Xiao, Qiong (2); Wu, Xia (2); Liu, Fan (2); Miao, Ying
(2); Jiang, Yong-Jun (1)
Author affiliation:(1) Chongqing Key Laboratory of Karst Environment, School of
Geographical Sciences, Southwest University, Chongqing; 400715, China; (2) Key Laboratory
of Karst Dynamics, Ministry of Land and Resources/Guangxi, Institute of Karst Geology,
Chinese Academy of Geological Sciences, Guilin; 541004, China
Corresponding author:Jiang, Yong-Jun(jiangjyj@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4108-4119
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The influence of human activities on karst surface water quality has received
increasing attention. To explore the impact of human activities on water-rock
interactions in karst surface water, water samples were collected from July to November
in 2016 in the Lijiang River, which is dominated by human activities. The samples were
analyzed for the hydrochemistryand the characteristics of
δ<sup>13</sup>C<inf>DIC</inf>. The results show that: (1)The Lijiang River is
mainly characterized by HCO<inf>3</inf>-Ca chemical composition.. The
SO<inf>4</inf><sup>2-</sup>and NO<inf>3</inf><sup>-</sup>concentrations are inferior to
HCO<inf>3</inf><sup>-</sup>concentrations in the anion composition; besides, the
concentrations of SO<inf>4</inf><sup>2-</sup>and NO<inf>3</inf><sup>-</sup>in the river
between Guilin and Yangshuo are higher than in the other sampling sites, caused by
tourism and urban development. (2)Equivalent ratios of [Ca<sup>2+</sup>
+Mg<sup>2+</sup>]/[HCO<inf>3</inf><sup>-</sup>] are between 1.01 and 1.51 and the
equivalent ratios of [Ca<sup>2+</sup>+Mg<sup>2+</sup>]/[SO<inf>4</inf><sup>2-</sup>
+NO<inf>3</inf><sup>-</sup>+HCO<inf>3</inf><sup>-</sup>] are between 0.85 and 1.12,
indicating that the sulfuric acid and nitric acid have participated in the water-rock
interaction. (3)The proportions of carbonic acid dissolving carbonate rocks range from
32.10%-98.01% with an average of 75.89%. The proportions of sulfuric acid and nitric acid
dissolving carbonate rocks vary from 1.99%-67.90% with an average of 24.11%. The
proportions of sulfuric acid and nitric acid dissolving carbonate rocks in the rainy
period with an average of 24.31% is higher than in the brief rain period with an average
of 23.88%. In addition, the proportions of sulfuric acid and nitric acid dissolving
carbonate rocks present a fluctuated increasing trend from upstream to downstream and the
maximum strength and the minimum strength of the sulfuric and nitric acid dissolving
carbonate rocks occur in Lingchuan and Huajiang, respectively. (4) HCO<inf>3</inf><sup>-
</sup>mainly originated from the carbonate rocks dissolved by carbonic acid, with an
average of 83.58%, followed by the carbonate rocks dissolved by sulfuric acid and nitric
acid, with an average of 14.24%. The contribution of carbonic acid weathering silicate
rocks is the smallest with an average of 2.18%. ⑤
δ<sup>13</sup>C<inf>DIC</inf>of the Lijiang River ranges from -11.95‰-
7.61‰; the calculated δ<sup>13</sup>C<inf>DIC-rock</inf>using the mixture
endmember model ranges from -14.24‰-7.23‰.
δ<sup>13</sup>C<inf>DIC</inf>is close to δ<sup>13</sup>C<inf>DIC-rock</inf>in
the rainy period and δ<sup>13</sup>C<inf>DIC</inf>is significantly higher than
δ<sup>13</sup>C<inf>DIC-rock</inf>in the brief rain period. The difference between
δ<sup>13</sup>C<inf>DIC</inf>and δ<sup>13</sup>C<inf>DIC-rock</inf>is caused
by the influence of aquatic photosynthetic organisms.<br/> © 2017, Science Press.
All right reserved.
Number of references:33
Main heading:Rivers
Controlled terms:Aquatic organisms - Calcium - Carbon - Carbon dioxide - Carbonates -
Carbonation - Dissolution - Erosion - Landforms - Nitric acid - Organic acids - Rain -
Rocks - Sedimentary rocks - Silicate minerals - Silicates - Sulfuric acid - Surface
waters - Urban growth - Water quality - Water resources - Weathering
Uncontrolled terms:Acid erosion - Anion composition - Carbon sink - Chemical compositions
- Equivalent ratios - Photosynthetic organisms - Urban development - Water rock
interactions
Classification code:403.1 Urban Planning and Development - 443.3 Precipitation - 444
Water Resources - 444.1 Surface Water - 445.2 Water Analysis - 471 Marine Science and
Oceanography - 481.1 Geology - 482.2 Minerals - 549.2 Alkaline Earth Metals - 802.2
Chemical Reactions - 802.3 Chemical Operations - 804 Chemical Products Generally
Numerical data indexing:Percentage 1.42e+01%, Percentage 1.99e+00% to 6.79e+01%,
Percentage 2.18e+00%, Percentage 2.39e+01%, Percentage 2.41e+01%, Percentage 2.43e+01%,
Percentage 3.21e+01% to 9.80e+01%, Percentage 7.59e+01%, Percentage 8.36e+01%
DOI:10.13227/j.hjkx.201703229
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 43>
Accession number:20174904509402
Title:Spatio-temporal Variations in Phytoplankton Community in Shahe Reservoir, Tianmuhu,
China
Authors:Sun, Xiang (1); Zhu, Guang-Wei (2); Yang, Wen-Bin (1); Zhu, Meng-Yuan (2); Xu,
Hai (2); Guo, Chao-Xuan (2); Yu, Li (2); Shi, Hao-Chen (3); Hang, Xin-Yu (3); Xu, Di-Fei
(3)
Author affiliation:(1) College of Environmental Science and Engineering, Anhui Normal
University, Wuhu; 241003, China; (2) State Key Laboratory of Lake Environment and
Science, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences,
Nanjing; 210008, China; (3) High School Affiliated to Nanjing Normal University, Nanjing;
210003, China
Corresponding author:Yang, Wen-Bin(ywb1968@mail.ahnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4160-4168
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Monthly investigations of the phytoplankton community and the associated
environmental drivers during the past eight years in the Shahe Reservoir, Jiangsu
Province, China revealed the spatial and temporal variations of phytoplankton and the
associated driving factors in the reservoir. The results show that the concentrations of
total nitrogen (TN), total phosphorous (TP), turbidity (Turb), suspended solids (SS), and
chlorophyll-a (CHL) were the highest in the upstream tributaries and the lowest in the
downstream-linked reservoir. In contrast, the highest Secchi disk depth (SDD) was
recorded in the Shahe Reservoir and that the lowest in the upstream tributaries.
Significant differences in water quality indices were recorded among the upstream
tributaries, the transition region, and the downstream-linked reservoir area (ANOVA,
P<0.05). The biomass of phytoplankton was the highest in the upstream tributaries and
the lowest in the reservoir. The highest biomass of phytoplankton was recorded in the
summer and the lowest in the winter. Synedra, Cyclotella, Cryptomonas, and Achnanthes
were the dominant genera in the spring; Synedra, Cryptomonas, Raphidiopsis, and
Phormidium were dominant in the summer; Cryptomonas, Synedra, Raphidiopsis, and
Aphanizomenon were dominant in the autumn; and Cryptomonas, Synedra, Achnanthes, and
Cyclotella were dominant in the winter. Synedra and Cryptomonas were the dominant genera
throughout the year. The correlation analysis shows that TP, water temperature, and SDD
were the most important driving factors for the spatial and temporal variations of
phytoplankton. Notable spatial differences were recorded for Cryptomonas, while minimal
variations were recorded for the remaining species. A smaller number sampling sites and a
higher sampling frequency are needed to characterize the phytoplankton community in the
Shahe Reservoir.<br/> © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Reservoirs (water)
Controlled terms:Eutrophication - Phytoplankton - Rivers - Water quality
Uncontrolled terms:Cyanobacteria - Diatom - Phytoplankton community - Sampling
frequencies - Spatial and temporal variation - Spatial temporals - Spatio-temporal
variation - Water quality indexes
Classification code:441.2 Reservoirs - 445.2 Water Analysis - 471 Marine Science and
Oceanography
DOI:10.13227/j.hjkx.201704161
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 44>
Accession number:20174904509419
Title:Improving Nitrogen and Phosphorus Removal from Reclaimed Water Using a Novel
Sulfur/Iron Composite Filler
Authors:Zhou, Yan-Qing (1); Hao, Rui-Xia (1); Liu, Si-Yuan (1); Wang, Li-Sha (1)
Author affiliation:(1) Key Laboratory of Beijing for Water Quality Science and Water
Environmental Recovery Engineering, College of Architecture and Civil Engineering,
Beijing University of Technology, Beijing; 100124, China
Corresponding author:Hao, Rui-Xia(haoruixia@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4309-4315
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to improve the ability of denitrification and phosphorus removal from
reclaimed water, a novel composite filler was prepared using sulfur powder and sponge
iron powder, and a comparative experiment was constructed at different HRT(hydraulic
retention time) and C/N(carbon-nitrogen ratio) conditions between the novel filler and
the composite filler. The results showed that the efficiency of nitrogen and phosphorus
removal on the novel filler was higher than that on the grain filler (more than 30%
higher at HRT=4 h and C/N=1). Moreover, based on the 16S rRNA gene clone library, the
denitrification system in the two reactors included sulfur autotrophic denitrification
bacteria and heterotrophic denitrification bacteria, while the proportion of sulfur
autotrophic denitrification bacteria in the novel filler system was higher. The dominant
bacteria in the novel filler and composite filler were Sulfurimonas and Acinetobacter,
respectively.<br/> © 2017, Science Press. All right reserved.
Number of references:24
Main heading:Fillers
Controlled terms:Bacteria - Carbon - Chemicals removal (water treatment) - Cloning -
Denitrification - Genes - Nitrogen - Nitrogen removal - Phosphorus - RNA - Sponge iron -
Sulfur
Uncontrolled terms:16S rRNA gene clone libraries - Autotrophic denitrification - Chemical
phosphorus removal - Composite fillers - Gene clone libraries - Heterotrophic
denitrification - Hydraulic retention time - Nitrogen and phosphorus removal
Classification code:461.2 Biological Materials and Tissue Engineering - 461.8.1 Genetic
Engineering - 545.1 Iron - 802.2 Chemical Reactions - 804 Chemical Products Generally
Numerical data indexing:Percentage 3.00e+01%
DOI:10.13227/j.hjkx.201703241
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 45>
Accession number:20174904509404
Title:Characteristics of Phosphorus Output Through Runoff on a Red Soil Slope Under
Natural Rainfall Conditions
Authors:Zuo, Ji-Chao (1, 2); Zheng, Hai-Jin (1, 2); Xi, Tong-Hang (1, 2); Wang, Ling-Yun
(1, 2); Nie, Xiao-Fei (1, 2); Liu, Zhao (1, 2)
Author affiliation:(1) Jiangxi Institute of Soil and Water Conservation, Nanchang;
330029, China; (2) Jiangxi Provincial Key Laboratory of Soil Erosion and Prevention,
Nanchang; 330029, China
Corresponding author:Zheng, Hai-Jin(haijinzheng@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4178-4186
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The development of agriculture in the red soil sloping uplands has been
increasingly restricted by low water availability, high temperatures, and low fertilizer
use efficiency. Subsurface flow has a significant influence on runoff generation,
nutrient loss, and soil erosion. The rainfall-runoff process makes it easy for nutrients
on the sloping land to enter water bodies through subsurface flow mainly in the liquid
phase, which may lead to environmental problems such as eutrophication and groundwater
pollution. Phosphorus as one of the common nutrients causing eutrophication is immobile
in the soil because it is easily absorbed and fixed by soil particles. Thus, the
principal pathway of phosphorus release from the soil is the surface flow. In some
regions, sufficient and concentrated rainfall results in the surface-subsurface flow that
enhances phosphorus migration. Recently, researchers have studied the migration patterns
of red soil phosphorus through surface flow and the impact factors arising from these
migrations, as well as the generation of subsurface flow and its influence on phosphorus
outputs. However, there are relatively few investigations that have comprehensively
considered the influence of both surface flow and subsurface flow on the migration of red
soil phosphorus. In order to investigate the characteristics of phosphorus loss through
runoff under natural rainfall, a large-scale field lysimeter experiment was conducted
with three treatments i.e., grass cover (GC), litter mulch (LM), and bare land (BL) on a
red soil slope land in southeast China. Phosphorus loss through surface flow, interflow
at different soil layers (30 cm and 60 cm), and groundwater flow (at 105 cm depth) was
observed under each natural precipitation event over a one-year period. The results
showed that: (1) The concentrations of total P (TP) and dissoluble P (DP) in surface flow
were slightly higher than those in interflow and groundwater flow; the concentrations of
TP and DP showed a gradual downward trend with the increase in soil depth. The total
amount of TP runoff loss was ordered as BL (1.61 kg·hm<sup>-2</sup>)>LM (1.33
kg·hm<sup>-2</sup>)>GC(0.82 kg·hm<sup>-2</sup>). (2) Surface flow,
interflow, and groundwater contributed to 57%, 6%, and 37%, respectively, of the
phosphorus runoff loss on BL plot; surface runoff was the main pathway of phosphorus
loss. Groundwater flow was the crucial route of phosphorus runoff loss once a vegetation
cover was in place; groundwater flow contributed to more than 71% of the phosphorus
runoff loss while the surface flow contributed less than 14%. (3) Particulate phosphorus
was the primary pattern of phosphorus transport which accounted for 64%-97% of the total
amount of phosphorus runoff loss. The effect of phosphorus loss through groundwater flow
cannot be neglected on the red soil slope land. The loss load of phosphorus through
runoff can be controlled by grass cover and litter mulch treatments, whereas the
concentrations of phosphorus in runoff do not significantly reduce.<br/> © 2017,
Science Press. All right reserved.
Number of references:30
Main heading:Agricultural runoff
Controlled terms:Eutrophication - Groundwater - Groundwater flow - Groundwater pollution
- Nutrients - Phosphorus - Precipitation (meteorology) - Rain - Runoff - Soils - Water
pollution
Uncontrolled terms:Interflow - Natural rainfalls - Phosphorus loss - Red soil slops -
Surface runoffs - Underground runoffs
Classification code:443.3 Precipitation - 444.1 Surface Water - 444.2 Groundwater -
453 Water Pollution - 453.1 Water Pollution Sources - 483.1 Soils and Soil Mechanics -
804 Chemical Products Generally
Numerical data indexing:Percentage 1.40e+01%, Percentage 3.70e+01%, Percentage 5.70e+01%,
Percentage 6.00e+00%, Percentage 6.40e+01% to 9.70e+01%, Percentage 7.10e+01%, Size
1.05e+00m, Size 3.00e-01m, Size 6.00e-01m
DOI:10.13227/j.hjkx.201703025
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 46>
Accession number:20174904509415
Title:Effects of Bacteria on the Growth of and Lipid Accumulation in Chlorella
pyrenoidosa Cultivated in Municipal Wastewater
Authors:Tu, Ren-Jie (1); Jin, Wen-Biao (1); Han, Song-Fang (1); Chen, Hong-Yi (1)
Author affiliation:(1) School of Civil and Environmental Engineering, Harbin Institute of
Technology Shenzhen Graduate School, Shenzhen; 518055, China
Corresponding author:Jin, Wen-Biao(jinwb@hit.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4279-4285
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Cultivating microalgae using municipal wastewater can treat wastewater and
recover algal biofuel as an energy source. Wastewater provides necessary nutrients such
as nitrogen, phosphorus, and water for microalgal growth. Due to the complexity of the
components of municipal wastewater and the complex symbiotic and antagonistic
relationship between microalgae and bacteria, it is necessary to select the suitable
dominant bacterial species that can promote the microalgae to achieve high lipid
production and algal biofuel production using municipal wastewater. Based on the
microalgal growth and lipid production, we selected Photosynthetic bacteria and W4
bacteria from 13 different types of bacteria and analyzed the microbial community
structure of the municipal wastewater at the end of the microalgal culture cycle.
Laboratory test results showed that the amount of lipid production by Photosynthetic
bacteria and W4 was 0.114 g·L<sup>-1</sup>and 0.113 g·L<sup>-1</sup>, which
is 22.58% and 21.50% higher than the production by the control group, respectively.
According to the gas chromatography (GC) analysis of the lipids, Photosynthetic bacteria
and W4 bacteria exerted a relatively low influence on the composition of fatty acids of
Chlorella pyrenoidosa but increased the content of monounsaturated fatty acids that
improve the grade of biodiesel. The results of the analysis of microbial community
structure of the municipal wastewater showed that Photosynthetic and W4 bacteria reduced
the richness and diversity of bacterial communities and have the potential to become the
dominant bacterial community.<br/> © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Bacteria
Controlled terms:Algae - Biofuels - Fatty acids - Gas chromatography - Microorganisms -
Monounsaturated fatty acids - Social sciences - Wastewater treatment
Uncontrolled terms:Bacterial community - Chlorella pyrenoidosa - Lipid accumulations -
Lipid productions - Microalgal cultures - Microbial community structures - Municipal
wastewaters - Photosynthetic bacterias
Classification code:452.4 Industrial Wastes Treatment and Disposal - 461.9 Biology -
802.3 Chemical Operations - 804.1 Organic Compounds - 971 Social Sciences
Numerical data indexing:Mass_Density 1.13e-01kg/m3, Mass_Density 1.14e-01kg/m3,
Percentage 2.15e+01%, Percentage 2.26e+01%
DOI:10.13227/j.hjkx.201703054
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 47>
Accession number:20174904509429
Title:Removal of Cd from Soil by Aspergillus fumigatus in a Semi-solid Culture
Authors:Chen, Yao-Ning (1, 2); Wang, Yuan-Nan (1, 2); Li, Yuan-Ping (3); Li, Hui (4);
Chen, Yan-Rong (1, 2); Wu, Yan-Xin (1, 2); Gou, Yu (1, 2); Zhu, Fu-Zao (1, 2); Zhang,
Dao-Li (1, 2); Liu, Yao (1, 2); Zeng, Guang-Ming (1, 2)
Author affiliation:(1) College of Environment Science and Engineering, Hunan University,
Changsha; 410082, China; (2) Key Laboratory of Environmental Biology and Pollution
Control (Hunan University), Changsha; 410082, China; (3) College of Municipal and Mapping
Engineering, Hunan City University, Yiyang; 413000, China; (4) Institute of Biological
and Environmental Engineering, Hunan Academy of Forestry, Changsha; 410004, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4398-4404
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:A method was proposed to remove Cd from contaminated soils by a semi-solid
culture containing Aspergillus fumigatus that have a strong resistance to Cd. The removal
efficiencies of Cd in different simulated Cd pollution levels were studied and the
changes in Cd adsorption and the enrichment in Aspergillus fumigatus were measured. The
results showed that Aspergillus fumigatus could remove some Cd from the soil in the
semi-solid culture system. When the concentration of Cd was 10 mg·kg<sup>-1</sup>,
the total removal rate of Cd was up to 31%. Meanwhile, the dry weight of Aspergillus
fumigatus and the pH of the system were studied during the culture process. The results
showed that the dry weight decreased with the increase in culture time and Cd
concentration, the maximum decrease rate of dry weight was 64%. The removal efficiency
was the best when the pH was varied from 5.6 to 6.0. The changes in different extraction
fractions for Cd showed that the main fractions of Cd removed by Aspergillus fumigatus
were the acid-soluble fraction and the reducible fraction and the oxidizable fraction of
Cd remained essentially unchanged before and after the culturing. The proposed method
would provide valuable information for the remediation of heavy metal-contaminated soil
by fungi.<br/> © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Pollution
Controlled terms:Aspergillus - Cadmium - Efficiency - Heavy metals - Remediation -
Removal - Soil pollution - Soil pollution control - Soils
Uncontrolled terms:Acid-soluble fractions - Aspergillus fumigatus - Contaminated soils -
Extraction fractions - Heavy metal contaminated soils - Heavy metal speciation - Removal
efficiencies - Total removal rates
Classification code:454.2 Environmental Impact and Protection - 461.9 Biology - 483.1
Soils and Soil Mechanics - 531 Metallurgy and Metallography - 549.3 Nonferrous Metals
and Alloys excluding Alkali and Alkaline Earth Metals - 913.1 Production Engineering
Numerical data indexing:Percentage 3.10e+01%, Percentage 6.40e+01%
DOI:10.13227/j.hjkx.201703039
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 48>
Accession number:20174904509430
Title:Removal of Chlortetracycline and Morphological Changes in Heavy Metals in Swine
Manure Using the Composting Process
Authors:Wen, Qin-Xue (1); Cao, Yong-Sen (1); Chen, Zhi-Qiang (1)
Author affiliation:(1) State Key Laboratory of Urban Water Resource and Environment
(SKLUWRE, HIT), Harbin Institute of Technology, Harbin; 150090, China
Corresponding author:Chen, Zhi-Qiang(czqhit@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4405-4411
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The widespread use of antibiotics and heavy metals in livestock farms results in
large residues of antibiotics and heavy metals in the livestock manure. Composting
technology can biodegrade residual antibiotics and solidify heavy metals. A pilot
composting reactor was used to analyze the characteristics of chlortetracycline (CTC)
removal at different antibiotic concentrations [0 mg·kg<sup>-1</sup>(CK), 10
mg·kg<sup>-1</sup>(T1), and 50 mg·kg<sup>-1</sup>(T2)]. Moreover, the
morphological changes in heavy metals during the composting process were analyzed. After
composting, no chlortetracycline was detected in the CK group and the antibiotics
degradation rates of T1 and T2 groups reached 96.31% and 97.32%, respectively. The
chlortetracycline degradation fits the pseudo-first-order kinetics model. Heavy metals
can be solidified during the composting; thus, the bioavailable state of Cu and Zn
(exchangeable state, reducible state) changed into the oxidation state and residues with
apparent passivation formed. The correlation analysis showed that the removal of CTC
showed strong positive correlations with the biological available Cu and Zn.<br/> ©
2017, Science Press. All right reserved.
Number of references:31
Main heading:Copper
Controlled terms:Agriculture - Antibiotics - Degradation - Fertilizers - Heavy metals -
Manures - Morphology - Zinc
Uncontrolled terms:Aerobic composting - Antibiotic concentration - Chlorotetracycline
(CTC) - Composting technologies - Morphological changes - Positive correlations - Pseudo
first-order kinetics - Swine manure
Classification code:461.6 Medicine and Pharmacology - 531 Metallurgy and Metallography
- 544.1 Copper - 546.3 Zinc and Alloys - 802.2 Chemical Reactions - 804 Chemical
Products Generally - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
- 821.5 Agricultural Wastes - 951 Materials Science
Numerical data indexing:Percentage 9.63e+01%, Percentage 9.73e+01%
DOI:10.13227/j.hjkx.201703040
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 49>
Accession number:20174904509383
Title:Correlation Analysis of the Urban Heat Island Effect and Its Impact Factors in
China
Authors:Cao, Chang (1, 2); Li, Xu-Hui (1, 2); Zhang, Mi (1, 2); Liu, Shou-Dong (1, 2);
Xu, Jia-Ping (1, 2)
Author affiliation:(1) Yale-NUIST Center on Atmospheric Environment, Nanjing University
of Information Science and Technology, Nanjing; 210044, China; (2) Jiangsu Collaborative
Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), Nanjing
University of Information Science and Technology, Nanjing; 210044, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:3987-3997
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:Urban heat islands (UHIs), which are urban areas with higher surface or air
temperatures than surrounding rural areas, can further enhance the heat stress already
exacerbated by global warming. This poses great challenges to human health and
sustainable development. China has been burdened with heavy air pollution in recent
years, and the effect of haze pollution on UHIs is still far less well understood. This
study investigated the spatial variations of daytime, nighttime, and seasonal surface UHI
effects in China during 2003-2013, based on MODIS land surface temperature data, and
analyzed the correlations between the UHI effect and its impact factors from both
biophysical and biochemical perspectives. Our results show that MODIS-derived annual
nighttime UHI effect (3.4 K±0.2 K, mean±1 s.e.) is higher than the annual
mean daytime UHI effect (2.1 K±0.3 K). The daytime UHI effect is strongest in
summer and weakest in winter but contrasts with the seasonal variation characteristics of
nighttime UHI effect. During daytime, UHI effects in humid and semi-humid regions are
much more obvious than those in semi-arid/arid regions; during nighttime, the UHI effect
in semi-humid and semi-arid/arid regions is much stronger than that in humid regions. A
Daytime Urban Cool Island effect exists in semi-arid/arid regions during spring, autumn,
and winter seasons. Population, vegetation activity, and irrigation are three factors
controlling annual mean daytime UHI effect. The nighttime UHI is significantly influenced
by latitude, albedo, precipitation, and aerosol concentrations. We provide evidence for a
long-held hypothesis that the biogeochemical effect of urban aerosols is an important
contributor to the UHI effect. The important role played by rural background environment
in calculating the UHI effect is further discussed in terms of surface aerodynamic
roughness and the contrast in albedo between urban and rural areas. Mitigation of haze
pollution has a co-benefit of reducing the UHI effect and heat stress for urban dwellers.
It is also conducive to reducing negative impacts of regional and global climate
change.<br/> © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Atmospheric temperature
Controlled terms:Aerosols - Climate change - Global warming - Landforms - Pollution -
Radiometers - Remote sensing - Rural areas - Solar radiation - Surface measurement -
Surface properties - Sustainable development - Thermal stress
Uncontrolled terms:Aerosol concentration - Background environment - Biogeochemical
effects - Global climate changes - Land surface temperature - Urban and rural areas -
Urban heat island - Urban Heat Island Effects
Classification code:443.1 Atmospheric Properties - 481.1 Geology - 657.1 Solar Energy
and Phenomena - 931.2 Physical Properties of Gases, Liquids and Solids - 943.2
Mechanical Variables Measurements - 944.7 Radiation Measuring Instruments
DOI:10.13227/j.hjkx.201702127
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 50>
Accession number:20174904509425
Title:Heavy Metal Contamination of Soils and Crops near a Zinc Smelter
Authors:Chen, Feng (1); Dong, Ze-Qin (1); Wang, Cheng-Cheng (1); Wei, Xue-Hua (1); Hu, Yu
(1); Zhang, Li-Juan (2)
Author affiliation:(1) Guizhou Academy of Environmental Science and Designing, Guiyang;
550081, China; (2) South China Institutes of Environmental Sciences, Ministry of
Environmental Protection, Guangzhou; 510655, China
Corresponding author:Dong, Ze-Qin(dongzheqin@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4360-4369
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:To evaluate the influence of mining activities on heavy metal contamination and
health risks in a zinc-smelting area in Guizhou Province, Pb, Cd, Zn, and Cu in
agriculture soils and dominant crops were monitored and analyzed. A single factor
pollution index and a comprehensive pollution index were calculated to assess the quality
of soils and crops. Furthermore, the potential ecological risks of the four heavy metals
in soils and crops were evaluated using the potential ecological risk index (RI). The
potential health risks to adults and children induced by the intake of these heavy metals
through consumption of crops were evaluated using the hazard quotient (HQ). The results
showed that: (1)The farmlands in the zinc-smelting area were contaminated by heavy
metals; the most polluted farm land was corn fields followed by paddy fields and wheat
fields. The order of the heavy metal concentrations was Cd>Cu>Zn>Pb. The Nemero
index of corn fields was higher than the threshold value of heavy pollution and was
higher than that of the paddy and wheat fields. Cd contributed most to the integrated
pollution index. (2)The very high ecological risk was posed by Cd followed by Pb, Cu, and
Zn. The results of the potential ecological risk assessment showed that 1.41% of the
sites were classified as low risk, 21.1% classified as medium risk, 35.2% as high risk,
and 42.3% as extremely high risk. (3)The average concentrations of Pb, Cd, Zn, and Cu in
rice were 0.145, 0.017, 16.97, and 2.704 mg·kg<sup>-1</sup>, respectively. The
average concentrations of Pb, Cd, Zn, and Cu in corn were 0.094, 0.055, 26.81, and 4.464
mg·kg<sup>-1</sup>, respectively. The average concentrations of Pb, Cd, Zn, and Cu
in wheat were 0.048, 0.085, 35.37, and 5.426 mg·kg<sup>-1</sup>, respectively.
(4)Rice, corn, and wheat from the study area were subjected to pollution at different
degrees. Among the three crops studied, wheat was polluted most heavily, followed by rice
and corn. Contamination levels of rice and corn were safe, whereas the contamination of
wheat reached alarming levels. (5)The daily intake of individual heavy metals from food
was below the standard exposure dose set by the United States Environmental Protection
Agency. In addition, the assessment results for the comprehensive health risk index for
the three crops indicate that the contamination of heavy metals poses health risks to
adults and children by food ingestion. (6) Positive correlations were not observed
between farmlands and crops.<br/> © 2017, Science Press. All right reserved.
Number of references:44
Main heading:Soil pollution
Controlled terms:Cadmium - Chemical contamination - Contamination - Copper - Crops -
Ecology - Environmental Protection Agency - Farms - Health - Health risks - Heavy metals
- Lead - Lead smelting - Pollution - Risk assessment - Smelting - Soils - Zinc - Zinc
smelting
Uncontrolled terms:Ecological risks - Heavy metal concentration - Heavy metal
contamination - Integrated pollution indices - Positive correlations - Potential
ecological risk - Potential health risks - United States environmental protection agency
Classification code:454.2 Environmental Impact and Protection - 454.3 Ecology and
Ecosystems - 461.6 Medicine and Pharmacology - 461.7 Health Care - 483.1 Soils and
Soil Mechanics - 531 Metallurgy and Metallography - 533.2 Metal Refining - 544.1
Copper - 546.1 Lead and Alloys - 546.3 Zinc and Alloys - 549.3 Nonferrous Metals and
Alloys excluding Alkali and Alkaline Earth Metals - 821 Agricultural Equipment and
Methods; Vegetation and Pest Control - 821.4 Agricultural Products - 822.3 Food
Products - 914.1 Accidents and Accident Prevention
Numerical data indexing:Percentage 1.41e+00%, Percentage 2.11e+01%, Percentage 3.52e+01%,
Percentage 4.23e+01%
DOI:10.13227/j.hjkx.201704140
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 51>
Accession number:20174904509390
Title:Chemical Characteristics and Sources of Heavy Metals in Fine Particles in Beijing
in 2011-2012
Authors:Zhou, Xue-Ming (1, 5); Zheng, Nai-Jia (1, 5); Li, Ying-Hong (3); Duan, Jing-Chun
(2); Tan, Ji-Hua (1, 4, 5); Zhang, Yuan-Xun (1, 5); He, Ke-Bin (4); Ma, Yong-Liang (4)
Author affiliation:(1) College of Resources and Environment, University of Chinese
Academy of Sciences, Beijing; 100049, China; (2) State Key Laboratory of Environmental
Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences,
Beijing; 100012, China; (3) Key Laboratory of Western China's Environmental Systems
(Ministry of Education), Lanzhou University, Lanzhou; 730000, China; (4) State Key Joint
Laboratory of Environment Simulation and Pollution Control, School of Environment,
Tsinghua University, Beijing; 100084, China; (5) Research Center for Eco-Environmental
Sciences, Chinese Academy of Sciences, Beijing; 100085, China
Corresponding author:Tan, Ji-Hua(Tanjh@ucas.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4054-4060
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:In order to investigate the chemical characteristics and sources of atmospheric
heavy metals, PM<inf>2.5</inf>samples were collected every three days during the summer
of 2011 and summer of 2012. The samples were analyzed for Li, V, Cr, Mn, Co, Cu, Zn, As,
Se, Ti, Ga, Ni, Sr, Cd, In, Ba, Tl, Pb, Bi, and U by ICP-MS, with an emphasis on seven
major heavy metal elements (Zn, Pb, Mn, Cu, As, V, and Cr). The concentrations of Zn, Pb,
Mn, Cu, As, V, and Cr were (331.30±254.52), (212.64±182.06),
(85.96±47.00), (45.19±27.74), (17.13±19.02), (4.92±3.38), and
(9.04±7.84) ng·m<sup>-3</sup>in PM<inf>2.5</inf>in Beijing during the
summer of 2011 and the summer of 2012. In the autumn and winter seasons,
PM<inf>2.5</inf>/heavy metal pollution is more severe than in spring and summer, which
may be related to the increase in coal combustion used for heating in autumn and winter
in Beijing. Haze pollution enhances the concentrations of seven heavy metals in
PM<inf>2.5</inf>in Beijing and the enhancement shows seasonal variations. The source
analysis suggested that dust (including building dust and road dust) and coal combustion
might be two most important sources of heavy metals in Beijing, and transport and other
industrial sources cannot be ignored.<br/> © 2017, Science Press. All right
reserved.
Number of references:40
Main heading:Copper
Controlled terms:Air pollution - Cadmium - Coal combustion - Coal dust - Dust - Heavy
metals - Lead - Manganese - Particles (particulate matter) - Pollution - Strontium -
Titanium - Uranium - Zinc
Uncontrolled terms:Atmospheric heavy metals - Chemical characteristic - Haze - Heavy
metal elements - Industrial sources - PM2.5 - Seasonal variation - Source
Classification code:451 Air Pollution - 451.1 Air Pollution Sources - 521 Fuel
Combustion and Flame Research - 524 Solid Fuels - 531 Metallurgy and Metallography -
542.3 Titanium and Alloys - 543.2 Manganese and Alloys - 544.1 Copper - 546.1 Lead
and Alloys - 546.3 Zinc and Alloys - 547 Minor, Precious and Rare Earth Metals and
Alloys - 549.2 Alkaline Earth Metals - 549.3 Nonferrous Metals and Alloys excluding
Alkali and Alkaline Earth Metals - 951 Materials Science
DOI:10.13227/j.hjkx.201612115
Database:Compendex
Compilation and indexing terms, Copyright 2017 Elsevier Inc.
<RECORD 52>
Accession number:20174904509423
Title:Construction of a High Efficiency Anaerobic Digestion System for Vinegar Residue
Authors:Zhou, Yun-Long (1, 2); Xu, Zhi-Yang (1, 2); Zhao, Ming-Xing (1, 2); Shi, Wan-
Sheng (1, 2); Huang, Zhen-Xing (1, 2); He, Di (1, 2); Ruan, Wen-Quan (1, 2)
Author affiliation:(1) School of Environment and Civil Engineering, Jiangnan University,
Wuxi; 214122, China; (2) Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi; 214122,
China
Corresponding author:Ruan, Wen-Quan(wqruanjn@gmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:10
Issue date:October 15, 2017
Publication year:2017
Pages:4340-4347
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Journal article (JA)
Publisher:Science Press
Abstract:The model of high solid anaerobic digestion was used by improving the degree of
homogeneity of the reaction system and biogas slurry reflux to gradually increase the
material load. The vinegar residue-efficient anaerobic digestion system was successfully
constructed without pretreatment. The optimum anaerobic digestibility was observed when
the material loading of the reaction system reached 6.15 g·(L·d)<sup>-
1</sup>, when the amount of biogas produced per unit of dry material was 396
mL·g<sup>-1</sup>, and the amount of methane produced per unit of dry material was
211 mL·g<sup>-1</sup>. The degradation rate of hemicellulose reached 63.66%, which
was the main reason for the improvement of anaerobic digestion performance. The
degradation rates of cellulose and lignin were 21.46% and 24.43%, respectively. The lower
degradation efficiency was mainly due to the complicated degradation of the benzene ring
structure in lignin and hindered hydrolysis of cellulose, which had a shielding effect on
cellulose degradation.<br/> © 2017, Science Press. All right reserved.
Number of references:36
Main heading:Anaerobic digestion
Controlled terms:Acetic acid - Biogas - Cellulose - Degradation - Digestive system -
Efficiency - Lignin
Uncontrolled terms:Benzene ring structure - Cellulase - Cellulose degradation -
Degradation efficiency - Digestion performance - Lignocellulose - Material loading -
Vinegar residue
Classification code:461.2 Biological Materials and Tissue Engineering - 522 Gas Fuels -
802.2 Chemical Reactions - 804.1 Organic Compounds - 811.3 Cellulose, Lignin and
Derivatives - 913.1 Production Engineering
Numerical data indexing:Percentage 2.15e+01%, Percentage 2.44e+01%, Percentage 6.37e+01%,
Specific_Volume 2.11e-01m3/kg, Specific_Volume 3.96e-01m3/kg
DOI:10.13227/j.hjkx.201703104
<RECORD 1>
Accession number:20181705054067
Title:Long Term Variations of Ozone Concentration of in a Winter Wheat Field and Its Loss
Estimate Based on Dry Matter and Yield
Authors:Zhao, Hui (1, 2); Zheng, You-Fei (1, 2, 3); Li, Shuo (4); Xu, Jing-Xin (1, 2);
Cao, Jia-Chen (3); Wei, Li (3); Guan, Qing (3)
Author affiliation:(1) Key Laboratory for Aerosol-Cloud-Precipitation of China
Meteorological Administration, Nanjing University of Information Science &
Technology, Nanjing; 210044, China; (2) School of Atmospheric Physics, Nanjing University
of Information Science & Technology, Nanjing; 210044, China; (3) Jiangsu
Collaborative Innovation Center of Atmospheric Environment and Equipment Technology
(CICAEET), Nanjing University of Information Science & Technology, Nanjing; 210044,
China; (4) Tongzhou District Meteorological Bureau of Beijing, Beijing; 101100, China
Corresponding author:Zheng, You-Fei(zhengyf@nuist.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5315-5325
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Surface ozone pollution and its negative effects on crops and food safety have
attracted the attention of many people. In this study, ozone concentration and
meteorological parameters in a winter wheat field were measured from 2014 to 2016. We
analyzed the variations in ozone concentration and AOT40 during the growing season for
winter wheat. According to the revised stomatal model, the leaf stomatal conductance of
winter wheat was simulated and verified by comparing with measured results. Based on the
flux model, the leaf stomatal fluxes of winter wheat were calculated. In addition, we
estimated the effects of ozone concentration on winter wheat dry matter and yield by
using exposure-response relationships and flux-response relationships. The results
suggested that the concentration of ozone gradually increased during the growing season
for winter wheat and showed a distinct unimodal pattern of diurnal variation. The mean
concentrations of ozone were 36.2, 37.7, and 33.6 nL·L<sup>-1</sup>, respectively,
and the ozone AOT40 values were 17.08, 17.90, and 11.84 μL·(L·h)<sup>-
1</sup>, respectively, during the growing seasons for winter wheat from 2014 to 2016. The
Jarvis-type factorial model of stomatal conductance could be used to simulate the
stomatal conductance of winter wheat in the region, and approximately 81% of the
variation of measured stomatal conductance could be accounted for by the model. The leaf
stomatal ozone fluxes of winter wheat were 9.36, 9.32, and 8.65 mmol·m<sup>-
2</sup>, respectively, from 2014 to 2016. Winter wheat yield decreased about 18.03%, and
its dry matter decreased about 19.31% under ozone stress during these three years.<br/>
© 2017, Science Press. All right reserved.
Number of references:46
Main heading:Crops
Controlled terms:Ozone
Uncontrolled terms:Dry matters - Ozone concentration - Stomatal fluxes - Winter wheat -
Yield
Classification code:804 Chemical Products Generally - 821.4 Agricultural Products
Numerical data indexing:Percentage 1.80e+01%, Percentage 1.93e+01%, Percentage 8.10e+01%
DOI:10.13227/j.hjkx.201704117
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 2>
Accession number:20181705054179
Title:Long-term Impacts of TiO<inf>2</inf>Nanoparticles on the Stability of an Anaerobic
Granular Sludge Bioreactor
Authors:Li, Hui-Ting (1); Cui, Fu-Yi (1, 2)
Author affiliation:(1) School of Municipal and Environmental Engineering, Harbin
Institute of Technology, Harbin; 150090, China; (2) State Key Laboratory of Urban Water
Resource and Environment, Harbin Institute of Technology, Harbin; 150090, China
Corresponding author:Cui, Fu-Yi(hit_cuifuyi@hotmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5229-5236
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In the present study, the fate and long-term effect of
TiO<inf>2</inf>nanoparticles (NPs) on anaerobic granular sludge (AGS) was evaluated in an
anaerobic methanogenic system. In the short-term experiment, the methane production rate
decreased when the dosage of TiO<inf>2</inf>NPs was greater than 150 mg·g<sup>-
1</sup>. However, no significant difference in the products of acidification and
methanation between the control and 150 mg·g<sup>-1</sup>(as VSS) of
TiO<inf>2</inf>NPs assays was observed, indicating low bacteria cytotoxicity of
TiO<inf>2</inf>NPs on AGS in dark anaerobic digestion. The operation data of the AGS
bioreactor showed that acidogens was more sensitive to prolonged exposure to
TiO<inf>2</inf>NPs with the accumulation of VFAs and a decrease of biogas production in
the TiO<inf>2</inf>NPs containing reactor. The inhibiting effect of TiO<inf>2</inf>NPs on
the AGS might be attributed to the physical restraints. The average
TiO<inf>2</inf>concentration escaping with the effluent was 0.632 mg·L<sup>-
1</sup>, suggesting most of the NPs were retained inside the reactor. The long-term
presence of TiO<inf>2</inf>NPs could alter the composition of the microbial communities
in the AGS, since the amount of Methanosarcina increased by 115.6%. The results also
indicated that the treatment of short-term sudden exposure to TiO<inf>2</inf>NPs using
batch tests might not be appropriate for interpreting their cumulative effects on the
AGS, since a long time was need for the TiO<inf>2</inf>NPs to show negative effects on
the microbial populations in the AGS. Our study could supply useful proof for assessments
of potential risks for TiO<inf>2</inf>NPs on anaerobic activated sludge.<br/> ©
2017, Science Press. All right reserved.
Number of references:35
Main heading:Anaerobic digestion
Controlled terms:Activated sludge process - Bioreactors - Effluents - Granular materials
- Nanoparticles - Titanium dioxide - Volatile fatty acids
Uncontrolled terms:Anaerobic granular sludge - Inhibitory mechanism - Long-term impacts -
Operation stability - TiO2 nano-particles
Classification code:452.2 Sewage Treatment - 452.3 Industrial Wastes - 461.8
Biotechnology - 761 Nanotechnology - 804.1 Organic Compounds - 804.2 Inorganic
Compounds - 933 Solid State Physics - 951 Materials Science
Numerical data indexing:Mass_Density 6.32e-04kg/m3, Percentage 1.16e+02%
DOI:10.13227/j.hjkx.201706001
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 3>
Accession number:20181705054139
Title:Regional Transport Matrix Study of PM<inf>2.5</inf>in Jingjinji Region, 2015
Authors:Wang, Yan-Li (1); Xue, Wen-Bo (1); Lei, Yu (1); Wang, Jin-Nan (1); Wu, Wei-Ling
(1)
Author affiliation:(1) Chinese Academy for Environmental Planning, Beijing; 100012, China
Corresponding author:Xue, Wen-Bo(xuewb@caep.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:4897-4904
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:By coupling particle source apportionment technology (PSAT) with a comprehensive
air quality model with extensions (CAMx), the regional transport matrix of
PM<inf>2.5</inf>was built for 13 cities in the Jingjinji Region in 2015. Results showed
that the major contributor to PM<inf>2.5</inf>was local source emissions, contributing
21.49%-68.74%, The internal transport from in-region sources contributed 13.31%-54.62%
and the external transport from out-region sources contributing 13.32%-45.02% were also
significant. The spatio-temporal distribution of the PM<inf>2.5</inf>transport matrix was
characterized by geographical, meteorological, and source patterns. Local emissions
exerted the most significant impact on the central part of Jingjinji in winter, while
regional transport contributed more to the southern region in other seasons. By assessing
the input/output and activity of PM<inf>2.5</inf>transport, Langfang, Hengshui, Chengde,
Qinhuangdao, and Xingtai were receptors; Tianjin, Cangzhou, Tangshan, Beijing,
Shijiazhuang, and Handan were sources, and Zhangjiakou and Baoding had a balanced
transportation mode. The seasonal matrix of PM<inf>2.5</inf>showed significant transport
between Beijing and Langfang, Baoding, Chengde, Tianjin, Cangzhou, while the city list
for Tianjin and Shijiazhuang differed slightly.<br/> © 2017, Science Press. All
right reserved.
Number of references:22
Main heading:Atmospheric movements
Controlled terms:Air quality
Uncontrolled terms:CAMx-PSAT - Jingjinji Region - Local source - PM2.5 - Regional
transport
Classification code:443.1 Atmospheric Properties - 451.2 Air Pollution Control
Numerical data indexing:Percentage 1.33e+01% to 4.50e+01%, Percentage 1.33e+01% to 5.46e
+01%, Percentage 2.15e+01% to 6.87e+01%
DOI:10.13227/j.hjkx.201703282
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 4>
Accession number:20181705046659
Title:Physiochemical Properties and Sources of Atmospheric Particulate Matter During
Pollution Monitoring in Nanning, China
Authors:Liu, Hui-Lin (1); Chen, Zhi-Ming (1); Li, Hong-Jiao (1); Jiang, Jing-Kun (2);
Zhang, Qiang (2); Huang, Jiong-Li (1); Mao, Jing-Ying (1); Liang, Gui-Yun (1); Yang,
Jun-Chao (1); Zhang, Da-Biao (1); Mo, Zhao-Yu (1, 3)
Author affiliation:(1) Scientific Research Academy of Guangxi Environmental Protection,
Nanning; 530022, China; (2) School of Environment, Tsinghua University, Beijing; 100084,
China; (3) Department of Environmental Science and Engineering, Fudan University,
Shanghai; 200433, China
Corresponding author:Mo, Zhao-Yu(65678503@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4486-4493
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Distribution characteristics, chemical constituents, and sources of particulate
matter were measured using a scanning mobility particle sizer and single particle aerosol
mass spectrometer during pollution monitoring that occurred between December 5th and
December 11th, 2016, in Nanning. Results showed that particulate matter (PM) sized
between 20 nm-10 μm were concentrated in the 23 to 395 nm range, with a peak of 100
nm. Three new particle types were generated during the course of this monitoring. These
new 30 nm particles came into existence between 14:00 to 18:00, and grew to a size of
between 40 nm and 110 nm between 20:00 to 06:00 the next day. The generation of the all
three new particles was affected by motor vehicle exhaust emissions. Many secondary
particles were also produced during this period of pollution. The source of the fine
particulate matter was mainly from the burning of biomass, dust, and the combustion of
coal. In addition, a long-distance transmission also contributed to the particles from
biomass burning.<br/> © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Particles (particulate matter)
Controlled terms:Aerosols - Air pollution - Coal combustion - Coal dust - Mass
spectrometers - Particle size - Particle size analysis - Pollution detection
Uncontrolled terms:Aerosol mass spectrometers - Atmospheric particulate matter -
Distribution characteristics - Long distance transmission - Nanning - Number
concentration - Particle sizing - Scanning mobility particle sizer
Classification code:451 Air Pollution - 503 Mines and Mining, Coal - 521 Fuel
Combustion and Flame Research - 524 Solid Fuels - 951 Materials Science
Numerical data indexing:Size 1.00e-07m, Size 2.00e-08m to 1.00e-05m, Size 2.30e-08m to
3.95e-07m, Size 3.00e-08m, Size 4.00e-08m to 1.10e-07m
DOI:10.13227/j.hjkx.201704240
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 5>
Accession number:20181705054159
Title:Distribution Characteristics and Risk Analysis of Antibiotic in the Groundwater in
Beijing
Authors:Chen, Wei-Ping (1); Peng, Cheng-Wei (1, 2); Yang, Yang (1, 2); Wu, Yu-Mei (3)
Author affiliation:(1) State Key Laboratory of Urban and Regional Ecology, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085,
China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3)
Monitoring Center of Beijing Water Environment, Beijing; 100038, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5074-5080
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Based on the GC-MS technique, we conducted a survey to investigate the
concentration, distributions, and emission sources of sulfonamides (SAs),
fluoroquinolones (FQs), tetracycline (TCs), β-lactam, and macrolides in groundwater
in Beijing. Results indicated that SAs, FQs, and TCs were the main types of antibiotic in
groundwater, and the detection ratios of trimethoprim, ciprofloxacin, and norfloxacin
were above 70%. Concentration of antibiotics in sites from sewage irrigation areas were
significantly higher than those from the drinking source area or the south-to-north water
recharge areas. The highest concentration of sulfadimidine (236 ng·L<sup>-1</sup>)
and sulfadiazine (96.8 ng·L<sup>-1</sup>) in groundwater were both found in the
sewage irrigation area. An ecological risk analysis showed a low risk for antibiotic in
groundwater at drinking source sites, while groundwater at sewage irrigation sites fell
into the high risk group. It is important to strengthen the ciprofloxacin monitoring and
ensure underground water safety.<br/> © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Risk analysis
Controlled terms:Amides - Antibiotics - Fertilizers - Gas chromatography - Groundwater -
Health risks - Irrigation - Mass spectrometry - Potable water - Risk assessment - Sewage
- Sulfur compounds
Uncontrolled terms:Distribution - Distribution characteristics - Ecological risks -
Emission sources - Fluoroquinolones (FQs) - Sewage irrigation - Tetracyclines (TCs) -
Water recharges
Classification code:444 Water Resources - 444.2 Groundwater - 452.1 Sewage - 461.6
Medicine and Pharmacology - 461.7 Health Care - 801 Chemistry - 802.3 Chemical
Operations - 804 Chemical Products Generally - 804.1 Organic Compounds - 821.3
Agricultural Methods - 914.1 Accidents and Accident Prevention - 922 Statistical
Methods
Numerical data indexing:Mass_Density 2.36e-07kg/m3, Mass_Density 9.68e-08kg/m3,
Percentage 7.00e+01%
DOI:10.13227/j.hjkx.201704287
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 6>
Accession number:20181705046670
Title:Effects of Soil Microbial Diversity on the Phosphate Fraction in the Rhizosphere of
Phragmites communis in the Yeyahu Wetland in Beijing, China
Authors:Teng, Ze-Dong (1); Li, Min (1); Zhu, Jing (1); Song, Ming-Yang (1)
Author affiliation:(1) College of Environmental Science and Engineering, Beijing Forestry
University, Beijing; 100083, China
Corresponding author:Li, Min(zedong_teng@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4589-4597
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In this research, microorganisms in rhizosphere/non-rhizosphere soils of
Phragmites communis in the Yeyahu Wetland were studied. A sequential extraction procedure
was used to analyze the phosphorus (P) forms in the rhizosphere/non-rhizosphere soil with
a variety of plant growth conditions (April, July, October). The soil bacteria community
structure and the diversity was measured using the high-throughput of 16S rRNA amplicons.
Furthermore, the complete crystallographic analysis (CCA) method was used to analyze the
relationship between phosphate solubilizing microorganisms and P transformation in the
soil samples. The results showed that the rank order of inorganic P (IP) fractions in the
soil was generally as follows: Ca-bound P (Ca-P) >Occluded P (Oc-P) >Fe-bound P
(Fe-P) >Exchangeable P (Ex-P) >Al-bound P (Al-P). The IP content was most affected
by the growth of Phragmites communis. The minimum content of IP appeared in the vigorous
growth period and the total IP content in the rhizosphere soil was generally lower than
in the non-rhizosphere soil. The rank order of organic P (OP) fractions were highly
resistant OP (HR-OP) >moderately resistant OP (MR-OP) > moderately labile OP (ML-
OP) > labile OP (L-OP), and all the components of OP first decreased and then
increased with the growth of plant. The major phylogenic groups in rhizosphere/non-
rhizosphere soil of Phragmites communis, included Proteobacteria, Acidobacteria,
Chloroflexi, and Actinobacteria among which, Proteobacteria was the majority group in the
community composition. Furthermore, the rhizosphere/non-rhizosphere microbial community
structure was significantly affected by seasonal changes and existing differences between
the rhizosphere and non-rhizosphere soils. In addition, the main functional groups of the
modal transformation of P bacteria genera were Bacillus, Enterobacter, Pseudomonas,
Burkholderia, Acinetobacter, which can make use of most OP and IP, playing an important
role in the transformation of P in wetland soils.<br/> © 2017, Science Press. All
right reserved.
Number of references:33
Main heading:Soils
Controlled terms:Aluminum compounds - Bacteria - Bacteriology - Calcium compounds -
Forestry - Iron compounds - RNA - Wetlands
Uncontrolled terms:Crystallographic analysis - Microbial community structures - Microbial
diversity - Non rhizospheres - Phragmites communis - Rhizosphere - Sequential extraction
procedure - Soil microbial diversity
Classification code:461.2 Biological Materials and Tissue Engineering - 483.1 Soils and
Soil Mechanics
DOI:10.13227/j.hjkx.201704253
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 7>
Accession number:20181705046669
Title:Impacts of Environmental Conditions on the Soaking Release of Nitrogen and
Phosphorus from Cynodon dactylon (Linn.) Pers. in the Water-level Fluctuation Zone of the
Three Gorges Reservoir Region
Authors:Xiao, Li-Wei (1, 2, 3); Zhu, Bo (1, 2)
Author affiliation:(1) Institute of Mountain Hazards and Environment, Chinese Academy of
Sciences, Chengdu; 610041, China; (2) Key Laboratory of Mountain Surface Processes and
Ecological Regulation, Chinese Academy of Sciences, Chengdu; 610041, China; (3)
University of Chinese Academy of Sciences, Beijing; 100049, China
Corresponding author:Zhu, Bo(bzhu@imde.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4580-4588
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The flooding-drying cycles in the water-level fluctuation zone (WLFZ) of the
Three Gorges Reservoir (TGR) result in an abundance of plants that are submerged and
decomposed to release nutrients. This has the potential to lead to water quality
deterioration of the TGR. Cynodon dactylon (Linn.) Pers., one of the typical plants in
the WLFZ, was collected and inundated in the laboratory under different conditions under
temperatures of 15℃ and 25℃, a pH 5.0 to 9.0, and under light and dark
conditions, respectively, to measure the decomposition rate and nitrogen and phosphorus
release mechanisms. The dry weight lost with the contents of nitrogen and phosphorus was
found to decrease after Cynodon dactylon (Linn.) Pers. was soaked for decomposition. The
amount released of total nitrogen (TN) and total phosphorus (TP) at 25℃ for 200-
days inundation was(2.66±0.29)g·kg<sup>-1</sup>or(3.76±0.04)
g·kg<sup>-1</sup>, respectively and at 15℃ was(0.79±0.03)
g·kg<sup>-1</sup>or (1.40±0.02) g·kg<sup>-1</sup>, respectively.
When the pH of the water submerging the grass was 5.0, 7.0 and 9.0, the amount of TN
released was (3.76±0.08) g·kg<sup>-1</sup>, (2.66±0.29)
g·kg<sup>-1</sup>, and (2.55±0.12) g·kg<sup>-1</sup>, respectively
while the amount of TP released was (1.53±0.04) g·kg<sup>-1</sup>,
(0.79±0.03) g·kg<sup>-1</sup>, and (1.70±0.07) g·kg<sup>-
1</sup>, respectively. The TN and TP released was (3.87±0.14) g·kg<sup>-
1</sup>and (1.78±0.08) g·kg<sup>-1</sup>under dark condition. The lower the
temperature, the higher the amount of TN and TP will be released for inundation from
Cynodon dactylon (Linn.) Pers. When the overlying water is acidic or alkaline, more TN
and TP is released. Dark conditions are beneficial to nitrogen and phosphorus release
into the overlying water. Thus, the water environment changes in each flooding season in
winter. Sewage discharge will also accelerate the nutrients released from soaked plants
through their decomposition in the WLFZ, and then will aggravate the deterioration of
water quality in TGR.<br/> © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Reservoirs (water)
Controlled terms:Alkalinity - Deterioration - Floods - Nitrogen - Nutrients - Phosphorus
- Sewage - Water levels - Water quality
Uncontrolled terms:Nitrogen and phosphorus - Plant inundation - Three gorges reservoir -
Water quality deterioration - Water-level-fluctuation zones
Classification code:441.2 Reservoirs - 445.2 Water Analysis - 452.1 Sewage - 801.1
Chemistry, General - 804 Chemical Products Generally - 951 Materials Science
Numerical data indexing:Age 5.48e-01yr
DOI:10.13227/j.hjkx.201703195
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 8>
Accession number:20181705046668
Title:Responses of the Benthic Diatom Community to Nutrients and the Identification of
Nutrient Thresholds in Three Aquatic Ecoregions of the Huntai River, Northeast China
Authors:Zhang, Li (1, 2); Lin, Jia-Ning (2); Zhang, Yuan (2); Wang, Shu-Ping (2); Zang,
Xiao-Miao (1, 2); Zhang, Xiao-Jiao (2, 3)
Author affiliation:(1) College of Environmental Sciences, Liaoning University, Shenyang;
110036, China; (2) .Laboratory of Riverine Ecological Conservation and Technology,
Chinese Research Academy of Environmental Sciences, Beijing; 100012, China; (3) College
of Fisheries and Life Science, Dalian Ocean University, Dalian; 116023, China
Corresponding author:Zhang, Yuan(zhangyuan@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4570-4579
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Benthic diatom communities and nutrient gradients were investigated from 287
sampling sites in three aquatic ecoregions (AE) of the Huntai River to characterize the
spatial distribution of nutrients and the benthic diatom communities. Locally weighted
scatterplot smoothing (LOWESS) was used to analyze the thresholds for nitrogen and
phosphorus. The results showed that: (1) The concentration of ammonia nitrogen and total
phosphorus significantly differs in the three AEs, and shows a tendency of AE I <AE
II<AE III. (2) To reveal the structure of benthic diatom communities, various benthic
diatom indexes, including the sportive diatom percentage, sensitive diatom percentage,
stipitate diatom percentage, Pielou evenness index, specific polluosensitivity index
(IPS), biological diatom index (IBD), and generic diatom index (IDG) were analyzed. The
sportive diatom percentage varied significantly in AEI, AEII, and AE III, with the
highest percentage observed in AEIII and the lowest in AEI. However, the other six
indexes exhibited an opposite trend. All revealed that AE III has been seriously damaged,
while AEI is less disturbed than AEII and AE III. (3) LOWESS fitting curves show
thresholds for ammonia nitrogen (NH<inf>4</inf><sup>+</sup>-N) in the three aquatic
ecoregions as 0.13, 0.30, and 1.98 mg·L<sup>-1</sup>, respectively and for total
phosphorous (TP) were 0.04, 0.06, and 0.20 mg·L<sup>-1</sup>. All results were
tested by independent-sample T tests. This study will provide assistance for effectively
protecting the benthic diatom community in different aquatic ecoregions and also provide
a theoretical basis for water management.<br/> © 2017, Science Press. All right
reserved.
Number of references:38
Main heading:Aquatic organisms
Controlled terms:Ammonia - Curve fitting - Nitrogen - Nutrients - Phosphorus - Rivers -
Water management
Uncontrolled terms:Aquatic ecoregions - Benthic diatoms - Ecoregions - Independent
samples - LOWESS - Nitrogen and phosphorus - Nutrient gradients - Threshold
Classification code:471 Marine Science and Oceanography - 804 Chemical Products
Generally - 804.2 Inorganic Compounds - 921.6 Numerical Methods
Numerical data indexing:Mass_Density 1.98e-03kg/m3, Mass_Density 2.00e-04kg/m3
DOI:10.13227/j.hjkx.201704207
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 9>
Accession number:20181705046657
Title:Characteristics and Source Identification of Carbonaceous Aerosols in
PM<inf>2.5</inf>Measurements During Summer and Fall in Changzhou
Authors:Ye, Zhao-Lian (1, 2); Liu, Jia-Shu (1); Li, Qing (1); Ma, Shuai-Shuai (1); Xu,
Peng (1)
Author affiliation:(1) School of Chemical and Environmental Engineering, Jiangsu
University of Technology, Changzhou; 213001, China; (2) School of Environmental Science
and Engineering, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and
Pollution Control, Nanjing University of Information Science & Technology, Nanjing;
210044, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4469-4477
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:To better understand the characterization and sources of carbonaceous
components, a total of 60 fine particle (PM<inf>2.5</inf>) samples were collected in
Changzhou during summer (July to August) and fall (October to November) of 2016. The
average mass concentrations of PM<inf>2.5</inf>, organic carbon (OC), and elemental
carbon (EC) during this study period were observed to be 73.0, 14.3 and 3.3
μg·m<sup>-3</sup>in summer and 84.2, 13.2, and 3.5 μg·m<sup>-
3</sup>in fall, respectively. The average mass fraction of carbonaceous aerosols (OC+EC)
in the PM<inf>2.5</inf>measurement was estimated to be 24.3% in summer and 20.7% in fall.
Eight carbonaceous fractions, resolved by following the IMPROVE-A thermal/optical
reflectance protocol, showed strong correlation (r>0.92) between OC2, OC3, OC4 and EC1
and close correlations between EC2 and EC3 (r>0.65), indicating probable similar
contributors. OC and EC were moderately correlated, suggesting complex contributions to
carbonaceous aerosol. The water soluble organic carbon (WSOC) to OC ratio (WSOC/OC) in
the fall (60.9%) was slightly higher than that in the summer (57.4%), while secondary
organic carbon (SOC) to OC ratio (SOC/OC) was lower in the fall (49.0%) compared with the
summer (52.5%). The SOC/OC ratio was lower than the WSOC/OC for both seasons, suggesting
that part of WSOC component originates from primary emissions. The significant
correlation of WSOC and SOC confirms that most SOC is water soluble. Relationships
between each carbonaceous species and the principal component analysis indicate that
vehicle emissions and coal combustion are the two main emission sources of carbonaceous
aerosols from the observation period. Back trajectory analysis was used to indicate that
carbonaceous components at sampling site are mainly affected by local emission sources
and short distance transport, whereas the contribution of long-distance transmission is
small.<br/> © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Organic carbon
Controlled terms:Aerosols - Coal combustion - Particles (particulate matter) - Principal
component analysis
Uncontrolled terms:Carbonaceous aerosol - Changzhou - PM2.5 - Secondary organic carbon -
Water-soluble organic carbon
Classification code:521 Fuel Combustion and Flame Research - 524 Solid Fuels - 804.1
Organic Compounds - 922.2 Mathematical Statistics - 951 Materials Science
Numerical data indexing:Percentage 2.07e+01%, Percentage 2.43e+01%, Percentage 4.90e+01%,
Percentage 5.25e+01%, Percentage 5.74e+01%, Percentage 6.09e+01%
DOI:10.13227/j.hjkx.201704295
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 10>
Accession number:20181705054180
Title:Composition and Distribution of Antibiotics in Soils with Different Land Use Types
in a Typical Peri-urban Area of the Yangtze River Delta
Authors:Zhao, Fang-Kai (1, 2); Chen, Li-Ding (1); Yang, Lei (1); Fang, Li (3); Sun, Long
(1); Li, Shou-Juan (1, 2)
Author affiliation:(1) State Key Laboratory of Urban and Regional Ecology, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085,
China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China; (3) Key
Laboratory of Health Risk Factors for Seafood of Zhejiang Province, Zhoushan Municipal
District Center for Disease Control and Prevention, Zhoushan; 316021, China
Corresponding author:Yang, Lei(leiyang@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5237-5246
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Antibiotics have been widely used for agriculture, aquaculture, and livestock,
as well as for human disease treatment, in recent decades. However, antibiotics cannot be
completely absorbed, and most of them are excreted through urine and feces. A substantial
part of the antibiotics enter soils through fertilization and irrigation. Antibiotics
persist in the soil environment and threaten human and ecological security. Identifying
the composition, distribution, and factors affecting antibiotics in soils with different
land use types can help in understanding the spatial distribution and migration processes
of antibiotics. In this study, a typical peri-urban catchment located in the Yangtze
River delta was selected as the study area, and 82 sampling sites were selected based on
land use and topographical features. Soil samples were collected at depths of 0-40 cm at
each sampling site. The types and quantity of antibiotics in each soil sample were
identified and analyzed by using HPLC-MS/MS in the laboratory. The composition and
concentration of antibiotics in different soil layers and the land use types were
compared, and the factors affecting the spatial distribution of soil antibiotics were
analyzed. Results from this study showed that the total concentration of antibiotic
compounds (∑total) ranged from 0.05 μg·kg<sup>-1</sup>to 395.55
μg·kg<sup>-1</sup>in the study area, and a significant spatial distribution of
antibiotics was found between different land use types. The ∑total in cropland ranged
from 0.35 μg·kg<sup>-1</sup>to 395.55 μg·kg<sup>-1</sup>, and
tetracyclines (TCs) were the dominant antibiotics (81.45%). The ∑total in forestland
ranged from 0.07 μg·kg<sup>-1</sup>to 3.65 μg·kg<sup>-1</sup>, with
values significantly lower than those in cropland (P<0.05). The ∑total in orchard
soil were significantly lower than in cropland (P<0.05), and no significant
differences in antibiotics were found between orchards and forestland (P>0.05). The
analysis of the composition and quantity of antibiotics in the soils showed that
tetracyclines (TCs) and quinolones (QNs) were the dominant antibiotic types in orchards
(TCs: 67.63%, QNs: 29.55%) and forestland (TCs: 13.25%, QNs: 70.04%). The indices,
including distance to town, distance to road, elevation, and C/N value in soils, were
selected to explore the influence of human activity on soil antibiotic concentration.
Results of the correlation analysis showed that the concentration of soil antibiotics
decreased with increasing values of the four indices. This indicated that the
concentrations of soil antibiotics in peri-urban areas were dominantly affected by land
use and its spatial distribution, and the concentrations increased with the intensity of
human activities. Results of this study can provide scientific guidance for soil
management and soil security.<br/> © 2017, Science Press. All right reserved.
Number of references:47
Main heading:Soil surveys
Controlled terms:Agronomy - Antibiotics - Catchments - Forestry - Land use - Orchards -
Queueing networks - Soils - Spatial distribution - Urban growth
Uncontrolled terms:Affecting factors - Antibiotic concentration - Correlation analysis -
Different land use types - Ecological security - Peri-urban catchment - Tetracyclines
(TCs) - Topographical features
Classification code:403 Urban and Regional Planning and Development - 403.1 Urban
Planning and Development - 461.6 Medicine and Pharmacology - 483.1 Soils and Soil
Mechanics - 821.3 Agricultural Methods - 921 Mathematics
Numerical data indexing:Percentage 1.32e+01%, Percentage 2.96e+01%, Percentage 6.76e+01%,
Percentage 7.00e+01%, Percentage 8.15e+01%, Size 0.00e+00m to 4.00e-01m
DOI:10.13227/j.hjkx.201705243
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 11>
Accession number:20181705046660
Title:Concentration and Size Distribution Characteristics of Culturable Bioaerosols at
Various Air Quality Levels During Fall and Winter in Xi'an, China
Authors:Li, Wan-Xin (1); Lu, Rui (1); Xie, Zheng-Sheng (1); Wang, Jin-Long (1); Fan,
Chun-Lan (1); Liu, Peng-Xia (1); Li, Yan-Peng (1, 2)
Author affiliation:(1) School of Environmental Science and Engineering, Chang'an
University, Xi'an; 710054, China; (2) Key Laboratory of Subsurface Hydrology and Ecology
in Arid Areas, Ministry of Education, Chang'an University, Xi'an; 710054, China
Corresponding author:Li, Yan-Peng(liyanp01@chd.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4494-4500
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The concentration and size distribution of culturable bacteria and fungi were
studied in Xi'an city at various air quality levels. The culturable bioaerosols were
collected by an Andersen bioaerosol aerosol sampler between Sept. 2014 and Jan. 2015.
Principal component analysis and multiple linear regressions were applied to link the
concentrations with meteorological conditions including ambient temperature and relative
humidity, as well as the levels of air pollutants such as PM<inf>2.5</inf>,
PM<inf>10</inf>, NO<inf>2</inf>, SO<inf>2</inf>, and O<inf>3</inf>. These measured
results showed that the concentration of culturable bacteria and fungi were in the ranges
of 97-1 909 CFU·m<sup>-3</sup>and 92-1 737 CFU·m<sup>-3</sup>,
respectively. The concentrations of culturable bioaerosols increased along with a
deterioration in air quality. The size distribution of the bacteria migrated to coarse
particles. Fungal aerosols showed a normal distribution at low pollution levels, while
for a high levels, they preferenced fine particles. Results from the principal component
analysis (PCA) indicate that the concentration of culturable bioaerosols is mainly
influenced by haze, solar radiation, and relative humidity. Multiple linear regression
analysis showed that bacterial aerosol concentrations are positively correlated with haze
(P<0.05) and relative humidity, while no significant negative correlations with solar
radiation exists. Fungal aerosol concentrations did not have significant positive
correlations with haze, solar radiation, or relative humidity. The results of this study
will provide basic data for evaluating the effects of bioaerosols on human health and the
environment.<br/> © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Principal component analysis
Controlled terms:Aerosols - Air quality - Bacteria - Fungi - Linear regression - Normal
distribution - Particles (particulate matter) - Size distribution - Solar radiation
Uncontrolled terms:Air pollutants - Airborne bacteria - Airborne fungi - Meteorological
condition - Multiple linear regression analysis - Multiple linear regressions -
Particulate Matter - Temperature and relative humidity
Classification code:451.2 Air Pollution Control - 657.1 Solar Energy and Phenomena -
922.1 Probability Theory - 922.2 Mathematical Statistics - 951 Materials Science
DOI:10.13227/j.hjkx.201703072
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 12>
Accession number:20181705046698
Title:Remediation of Cd/Ni Contaminated Soil by Biochar and Oxalic Acid Activated
Phosphate Rock
Authors:Duan, Ran (1, 2); Hu, Hong-Qing (1); Fu, Qing-Ling (1); Kou, Chang-Lin (2)
Author affiliation:(1) College of Resources and Environment, Huazhong Agriculture
University, Wuhan; 430070, China; (2) Institute of Plant Nutrition and Agricultural
Resources and Environmental Science, Henan Academy of Agricultural Sciences, Zhengzhou;
450002, China
Corresponding author:Fu, Qing-Ling(fuqingling@mail.hzau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4836-4843
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Taking soil contaminated with a combination of Cd and Ni as the research
objective, biochar, and oxalic acid activated phosphate rock (APR) were applied both
together and separately for the remediation of this contaminated soil. The effects of
different ratios of amendments on the remediation of Cd and Ni heavy metals in the soil
and on inorganic nitrogen and microbial biomass nitrogen (MBN) in the soil were compared.
The results show that an increasing amount of biochar and APR, increases the soil pH
gradually and acid-extractable Cd and Ni are gradually transformed into reducible,
oxidable and residual Cd and Ni, resulting in a reduction in Cd and Ni bioavailability.
After 40 days incubation, the acid extractable Ni decreased by 37.04% with a 14.8%
increase in residual Ni, and acid extractable Cd decreased 40.28% with a 35.20% increase
in residual Cd with the amendment of C50P3 (Applying 50 g·kg<sup>-1</sup>biochar
and 3 g·kg<sup>-1</sup>APR) when compared to C0P0 treatment (Applying nothing).
Furthermore, the MBN content for C50P0 (Applying 50 g·kg<sup>-1</sup>biochar only)
and C0P3 (Applying 3 g·kg<sup>-1</sup>APR only) increased by 1.5 and 1 times,
respectively, while the content of ammonium nitrogen decreased by 12.5% and 6.4%,
respectively and the content of nitrate nitrogen decreased by 11.6% and 10.2%,
respectively. This comparison shows that the combined effect of the application of
biochar and APR is superior to each respective separate treatment. A mixture of 50
g·kg<sup>-1</sup>of biochar and 3g·kg<sup>-1</sup>of APR (C50P3)
demonstrates the best effect on the remediation of the Cd and Ni in soil. Furthermore,
the application of amendments promoted the transformation of inorganic nitrogen into
organic nitrogen.<br/> © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Nickel
Controlled terms:Biochemistry - Cadmium compounds - Contamination - Heavy metals -
Nitrogen - Oxalic acid - Phosphate deposits - Remediation - Soil pollution - Soils
Uncontrolled terms:Activated phosphate rocks - Ammonium nitrogen - Bio chars -
Contaminated soils - Inorganic nitrogen - Microbial biomass - Nitrate nitrogen - Research
objectives
Classification code:454.2 Environmental Impact and Protection - 483.1 Soils and Soil
Mechanics - 505.1 Nonmetallic Mines - 531 Metallurgy and Metallography - 548.1 Nickel
- 801.2 Biochemistry - 804 Chemical Products Generally - 804.1 Organic Compounds
Numerical data indexing:Age 1.10e-01yr, Percentage 1.02e+01%, Percentage 1.16e+01%,
Percentage 1.25e+01%, Percentage 1.48e+01%, Percentage 3.52e+01%, Percentage 3.70e+01%,
Percentage 4.03e+01%, Percentage 6.40e+00%
DOI:10.13227/j.hjkx.201704028
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 13>
Accession number:20181705046683
Title:Microbial Population Dynamics During Sludge Granulation in a Simultaneous Nitrogen
and Phosphorus Removal System
Authors:Gao, Jing-Feng (1); Wang, Shi-Jie (1); Fan, Xiao-Yan (1); Pan, Kai-Ling (1);
Zhang, Li-Fang (1); Zhang, Shu-Jun (2); Gao, Yong-Qing (2); Zhang, Shuai (2)
Author affiliation:(1) National Engineering Laboratory for Advanced Municipal Wastewater
Treatment and Reuse Technology, College of Environmental and Energy Engineering, Beijing
University of Technology, Beijing; 100124, China; (2) Research and Development Center of
Beijing Drainage Group Co., Ltd., Beijing; 100124, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4696-4705
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In this study, domestic sewage was utilized to cultivate aerobic granular sludge
(AGS) in a simultaneous nitrogen and phosphorus removal (SNPR) system. The bacterial
population dynamics during the aerobic sludge granulation were investigated to reveal the
granulation mechanisms using Illumina MiSeq PE300 high-throughput sequencing.
Quantitative real time polymerase chain reactions (PCR) were used to investigate shifts
in the abundance of ammonia-oxidizing bacteria (AOB), ammonia-oxidizing archaea (AOA),
nitrite-oxidizing bacteria (NOB) and polyphosphate accumulating organisms (PAOs). After
cultivation for 100 d, the AGS was compact and demonstrated good SNPR performance. During
the AGS formation process, extracellular polysaccharides obviously increased, while
extracellular proteins kept relatively stable. The abundance of AOA significantly
decreased during the formation of AGS process, while the abundance of PAOs increased. The
bacterial diversity increased at first and then decreased during the formation of AGS.
The bacterial community changed dramatically during aerobic sludge granulation.
Persistent operational taxonomic units (OTUs) accounted for 92.70% of the total
sequences. Proteobacteria (31.07%-53.67%), Bacteroidetes (6.70%-16.50%) and Chloroflexi
(7.84%-13.36%) were the dominant phyla. Candidatus competibacter was obviously enriched
in the AGS formation process (increased from 0.11% in the seed sludge to 35.33% in the
AGS) and may play an important role in the formation of AGS.<br/> © 2017, Science
Press. All right reserved.
Number of references:29
Main heading:Nitrogen removal
Controlled terms:Ammonia - Bacteria - Granular materials - Granulation - Nitrogen -
Phosphorus - Polymerase chain reaction - Population dynamics - Sewage - Throughput
Uncontrolled terms:Aerobic granular sludges - Ammonia oxidizing archaea (AOA) - High-
throughput sequencing - Microbial community composition - Microbial population dynamics -
Polyphosphate-accumulating organisms - Quantitative real-time polymerase chain reaction -
Simultaneous nitrogen and phosphorus removals
Classification code:452.1 Sewage - 801.2 Biochemistry - 802.3 Chemical Operations -
804 Chemical Products Generally - 804.2 Inorganic Compounds - 951 Materials Science -
971 Social Sciences
Numerical data indexing:Percentage 1.10e-01%, Percentage 3.11e+01% to 5.37e+01%,
Percentage 3.53e+01%, Percentage 6.70e+00% to 1.65e+01%, Percentage 7.84e+00% to 1.34e
+01%, Percentage 9.27e+01%
DOI:10.13227/j.hjkx.201703275
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 14>
Accession number:20181705054173
Title:Start-up and Characteristics of the Microbial Community Structure of ANAMMOX
Authors:Wang, Yao-Qi (1); Zhang, Min (1); Jiang, Ying (1); Xu, Yue-Zhong (1, 2, 3); Chen,
Chong-Jun (1, 2, 3); Shen, Yao-Liang (1, 2, 3)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Jiangsu Collaborative Innovation
Center of Technology and Material of Water Treatment, Suzhou; 215009, China; (3) Jiangsu
Key Laboratory of Environmental Science and Engineering, Suzhou; 215009, China
Corresponding author:Chen, Chong-Jun(chongjunchen@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5184-5191
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:An anaerobic ammonium oxidation (ANAMMOX) reactor was successfully started up in
17 days, with the up-flow anaerobic sludge blanket (UASB) reactor being seeded with mixed
anaerobic sludge from laboratory cultures with an ANAMMOX function and aerobic activated
sludge from a municipal sewage treatment plant in a volume ratio of 1:2. The processes
could be divided into two phases of hydrolysis, enhanced and steady. Anaerobic ammonium
oxidation bacteria (AAOB) were enriched by improving the reactor volume load gradually
after the steady phase. When the volume load increased from 0.10 kg·
(m<sup>3</sup>·d)<sup>-1</sup>to 0.44 kg·(m<sup>3</sup>·d)<sup>-
1</sup>, the removal of total nitrogen (TN) also increased from 0.09 kg·
(m<sup>3</sup>·d)<sup>-1</sup>to 0.42 kg·(m<sup>3</sup>·d)<sup>-
1</sup>. The color of the sludge changed from a light red that deepened gradually in the
UASB reactor. At that time, the proportion of the sludge particle size greater than 0.2
mm increased from 10.90% to 38.37%.The sludges from the inoculation phase and from the
phase when the volume load was increasing were analyzed by high-throughput sequencing,
indicating that Chloroflexi, Proteobacteria, WWE3, Actinobacteria, Planctomycetes, and so
on were the dominant species. The proportion of Proteobacteriain the denitrification
bacteria was gradually reduced from 21.60% to 14.20% with an increase in the degree of
AAOB enrichment, while the Planctomycetes increased from 0.73% to 15.50%. Candidatus
Brocadia, Candidatus Jettenia, and Candidatus Kuenenia were the main species of
Planctomyceteswhen the volume load increased to 0.44 kg·(m<sup>3</sup>·d)
<sup>-1</sup>in the reactor, and the Candidatus Brocadia was the main species of AAOB,
which accounted for 13.40%.<br/> © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Nitrogen removal
Controlled terms:Activated sludge process - Bacteria - Particle size - Sewage treatment
plants - Throughput - Wastewater treatment
Uncontrolled terms:ANAMMOX - High-throughput sequencing - Microbial community structures
- UASB reactor - Volume loadings
Classification code:452.2 Sewage Treatment - 452.4 Industrial Wastes Treatment and
Disposal
Numerical data indexing:Age 4.66e-02yr, Percentage 1.09e+01% to 3.84e+01%, Percentage
1.34e+01%, Percentage 2.16e+01% to 1.42e+01%, Percentage 7.30e-01% to 1.55e+01%, Size
2.00e-04m
DOI:10.13227/j.hjkx.201705114
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 15>
Accession number:20181705054155
Title:Identification of Nitrate Sources and Transformation Processes in Midstream Areas:
A Case in the Taizi River Basin
Authors:Li, Yan-Li (1); Sun, Wei (1); Yang, Zi-Rui (1)
Author affiliation:(1) Institute of Resources and Environment, Henan Polytechnic
University, Jiaozuo; 454003, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5039-5046
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:This study analyzed the nitrate (NO<inf>3</inf><sup>-</sup>), ammonia nitrogen
(NH<inf>4</inf><sup>+</sup>-N), chloride (Cl<sup>-</sup>), δ<sup>15</sup>N-
NO<inf>3</inf><sup>-</sup>, δ<sup>18</sup>O-NO<inf>3</inf><sup>-</sup>, and
δ<sup>18</sup>O-H<inf>2</inf>O in the surface water to identify the nitrate sources
and transformation processes in midstream areas of the Taizi River basin in May and
August 2016, corresponding to the dry season and wet season, respectively. The results
indicated that the NO<inf>3</inf><sup>-</sup>, Cl<sup>-</sup>, and NH<inf>4</inf><sup>
+</sup>-N concentrations and the δ<sup>18</sup>O-NO<inf>3</inf><sup>-</sup>in the
dry season were greater than those in the wet season, and the δ<sup>15</sup>N-
NO<inf>3</inf><sup>-</sup>did not show significant seasonal variations based on the Man-
Whitney U test. The NO<inf>3</inf><sup>-</sup>was derived mainly from the mixed sources
according to the ranges of NO<inf>3</inf><sup>-</sup>/Cl<sup>-</sup>,
δ<sup>15</sup>N-NO<inf>3</inf><sup>-</sup>, and δ<sup>18</sup>O-
NO<inf>3</inf><sup>-</sup>. The nitrate sources in the surface water were synthetic
fertilizer, soil nitrogen, manure, and sewage in the Xihe River (XR), Lanhe River (LR),
and Xiada River (XDR) and soil nitrogen and synthetic fertilizer in the Er dao River
(EDR) during the wet season. The sources were synthetic fertilizer and soil nitrogen in
the XDR and soil nitrogen, manure, and sewage in the XR, LR, and EDR during the dry
season. The significant negative relationship between NO<inf>3</inf><sup>-</sup>and
NH<inf>4</inf><sup>+</sup>and the significant positive relationship between
NO<inf>3</inf><sup>-</sup>and δ<sup>15</sup>N-NO<inf>3</inf><sup>-</sup>in the wet
season indicated that the volatilization and nitrification of soil N might be related to
NO<inf>3</inf><sup>-</sup>sources in the wet season. NH<inf>4</inf><sup>+</sup>-N and
δ<sup>15</sup>N-NO<inf>3</inf><sup>-</sup>increased with decreasing
NO<inf>3</inf><sup>-</sup>and Cl<sup>-</sup>in EDR and LR during the wet season, which
indicated denitrification processes occurred. There was a significant relationship
between NO<inf>3</inf><sup>-</sup>and Cl<sup>-</sup>, indicating that mixing processes
occurred in the surface water during the two sampling periods. This study will provide a
better understanding for nitrate sources related to seasonal variations and
transformation processes in hilly areas.<br/> © 2017, Science Press. All right
reserved.
Number of references:34
Main heading:Rivers
Controlled terms:Chlorine compounds - Drought - Manures - Nitrates - Nitrogen fertilizers
- Sewage - Soils - Watersheds
Uncontrolled terms:Chloride - Denitrification process - Seasonal variation - Source
tracing - Stable isotopes - Synthetic fertilizers - Taizi rivers - Transformation process
Classification code:444 Water Resources - 444.1 Surface Water - 452.1 Sewage - 483.1
Soils and Soil Mechanics - 804 Chemical Products Generally - 804.2 Inorganic Compounds
- 821.5 Agricultural Wastes
DOI:10.13227/j.hjkx.201704238
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 16>
Accession number:20181705046694
Title:Assessment of Pollution, Sources, and Risks of Polycyclic Aromatic Hydrocarbons in
Soil from Urban Parks in Xi'an City, China
Authors:Zhou, Yan (1); Lu, Xin-Wei (1, 2)
Author affiliation:(1) College of Geography and Tourism, Shaanxi Normal University,
Xi'an; 710119, China; (2) National Experimental Teaching Demonstration Center of
Geography (Shaanxi Normal University), Xi'an; 710119, China
Corresponding author:Lu, Xin-Wei(luxinwei@snnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4800-4808
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:A total of seventeen surface soil samples were collected from urban parks in
Xi'an city. The concentration of sixteen priority polycyclic aromatic hydrocarbons (PAHs)
were analyzed by high performance liquid chromatography (HPLC). In addition, the
composition, source, pollution level and a risk assessment of PAHs in surface soil of
park were evaluated. The results showed that the total concentrations of sixteen PAHs
ranged from 0.362 to 1.336 μg·g<sup>-1</sup>, with a mean value of 0.591
μg·g<sup>-1</sup>. The concentration of seven carcinogenic PAHs
(∑<inf>7</inf>CPAHs) ranged from 0.051 to 0.528 μg·g<sup>-1</sup>, with a
mean value of 0.181 μg·g<sup>-1</sup>. Compared to the ∑PAHs levels of
other cities of China, the ∑PAHs in park surface soils in Xi'an are relatively low.
PAHs in the soil samples were dominated by low molecular weight PAHs with 2 and 3 rings.
The results of source analysis showed that the PAHs in park surface soil mainly
originated from the combustion of fossil fuels, however, the source of PAHs in some
samples is complex and from mixed sources, such as oil spills, oil burning, and
incomplete combustion of coal and biomass. The ecological risks of PAHs in the surface
soil were evaluated according to the soil quality guidelines to be ERL (effects range
low) and ERM (effects range median), and these results showed that all samples, in
general, were polluted. However, the potential ecological risks of PAHs were at a low
level. The incremental life cancer risk (ILCR) assessment indicated that health risks for
children and adults were both in a permissible range, however, the risks for children
exposed to the soil were considerably higher than for adults. Dermal contact was the main
exposure pathway that resulted in the relatively higher risk, followed by ingestion.<br/>
© 2017, Science Press. All right reserved.
Number of references:35
Main heading:Polycyclic aromatic hydrocarbons
Controlled terms:Aromatization - Coal combustion - Fossil fuels - Health risks - High
performance liquid chromatography - Hydrocarbons - Oil spills - Pollution - Quality
control - Risk assessment - Soil surveys - Soils
Uncontrolled terms:Carcinogenic PAHs - Exposure pathways - Incomplete combustion - Low
molecular weight - Polycyclic aromatic hydrocarbons (PAHS) - Potential ecological risk -
Source - Xi'an
Classification code:453.1 Water Pollution Sources - 461.7 Health Care - 483.1 Soils
and Soil Mechanics - 521 Fuel Combustion and Flame Research - 524 Solid Fuels - 802.2
Chemical Reactions - 804.1 Organic Compounds - 913.3 Quality Assurance and Control -
914.1 Accidents and Accident Prevention
DOI:10.13227/j.hjkx.201703009
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 17>
Accession number:20181705054171
Title:Effect of Free Ammonia on Ammonia Escape During an Ammonia Oxidation Process
Authors:Sun, Hong-Wei (1); Yu, Xue (1); You, Yong-Jun (1); Peng, Yong-Zhen (2); Wang,
Shu-Ying (2)
Author affiliation:(1) School of Environmental and Municipal Engineering, Lanzhou
Jiaotong University, Lanzhou; 730070, China; (2) Key Laboratory of Beijing for Water
Quality Science and Water Environment Recovery Engineering, Beijing University of
Technology, Beijing; 100124, China
Corresponding author:Peng, Yong-Zhen(pyz@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5169-5173
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:This study used short process nitrification sludge to investigate the effect of
high free ammonia (FA) on ammonia escape during ammonia oxidation. A sequencing batch
reactor (SBR) was used to study the ammonia escape process under different FA
concentrations. The results indicate that FA in water is usually combined with water
molecules at lower FA concentrations to produce stable
NH<inf>3</inf>·H<inf>2</inf>O with almost no ammonia escape. With high FA
concentration (FA>687.1 mg·L<sup>-1</sup>), ammonia nitrogen is not oxidized to
oxidized nitrogen (NO<inf>2</inf><sup>-</sup>-N concentration is<0.1
mg·L<sup>-1</sup>at the end of aeration), but the total nitrogen (TN) reached
269.7 mg·L<sup>-1</sup>. Therefore, when there is a high FA concentration,
NH<inf>4</inf><sup>+</sup>-N will evaporate in the form of FA, resulting in ammonia
escape. In addition, when 226.6≤FA≤711.8 mg·L<sup>-1</sup>, the free ammonia
escape rate (FEV) grows rapidly with the increase in FA concentration.<br/> © 2017,
Science Press. All right reserved.
Number of references:21
Main heading:Ammonia
Controlled terms:Batch reactors - Molecules - Nitrification - Nitrogen - Oxidation
Uncontrolled terms:Ammonia nitrogen - Ammonia oxidation - Escape process - Escape rate -
Free ammonia - Oxidized nitrogen - Sequencing batch reactors - Water molecule
Classification code:802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions -
804 Chemical Products Generally - 804.2 Inorganic Compounds - 931.3 Atomic and
Molecular Physics
Numerical data indexing:Mass_Density 2.70e-01kg/m3
DOI:10.13227/j.hjkx.201705117
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 18>
Accession number:20181705054071
Title:Review of CO<inf>2</inf>and CH<inf>4</inf>Emissions from Rivers
Authors:Wang, Xiao-Feng (1, 2); Yuan, Xing-Zhong (1, 2, 3, 4); Chen, Huai (5); He, Yi-Xin
(5); Luo, Zhen (6); Liu, Lian (3, 4); He, Zong-Yi (3, 4)
Author affiliation:(1) College of Geography and Tourism, Chongqing Normal University,
Chongqing; 401331, China; (2) Wetland Science Research Center of the Upper Reaches of the
Yangtze River, Chongqing Normal University, Chongqing; 401331, China; (3) State Key
Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing;
400030, China; (4) College of Resource and Environmental Science, Chongqing University,
Chongqing; 400030, China; (5) Chengdu Institute of Biology, Chinese Academy of Sciences,
Chengdu; 610041, China; (6) College of Military Preventive Medicine, Third Military
Medical University, Chongqing; 400038, China
Corresponding author:Yuan, Xing-Zhong(xzyuan@cqu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5352-5366
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Streams and rivers play a major biogeochemical role in the global carbon cycle
and act as hot spots for carbon dioxide (CO<inf>2</inf>) and methane (CH<inf>4</inf>)
emissions to the atmosphere, excepting their roles of transporting the water and carbon
from the terrestrial environment to the ocean. While carbon gases have been of great
global concern, systematic reviews are still scarce. Given recent recognition of the
pervasiveness of CO<inf>2</inf>and CH<inf>4</inf>in streams and rivers, this study
synthesized existing research and discoveries to identify patterns and controls for
riverine CO<inf>2</inf>and CH<inf>4</inf>, knowledge gaps, and research opportunities.
This study presented a conceptual framework for sources and the fates of
CO<inf>2</inf>/CH<inf>4</inf>from streams and rivers and used this framework to
understand the dynamic processes of fluvial carbon evasion and potential anthropogenic
disturbances. Multiple environmental influences combined with different contributions of
endogenous metabolism and terrigenous input, and the CO<inf>2</inf>and CH<inf>4</inf>in
streams and rivers showed significant spatial and temporal variability on a global scale,
regional scale, and watershed scale, which indicates a substantial challenge for
understanding the larger-scale dynamics. For a clearer recognition of how the changing
environment and human activities may modify fluvial CO<inf>2</inf>and
CH<inf>4</inf>dynamics, this study constructed a system framework of controls on
CO<inf>2</inf>and CH<inf>4</inf>production and persistence in streams and rivers. The
framework of controls can be viewed in terms of endogenous environmental controls that
influence river metabolism (organic matter, temperature, nutrients, pH, and alternative
electron acceptors) and external factors, including geomorphic and hydrologic drivers and
human activities (agriculture, damming, and urbanization). We point out that the carbon
emissions from rivers should be integrated into the terrestrial carbon budget, and in the
future, more attention should be given to research on the sources of CO<inf>2</inf>and
CH<inf>4</inf>in rivers, the generation and diffusion of CO<inf>2</inf>and
CH<inf>4</inf>at different interfaces, the spatiotemporal variability of riverine carbon
emissions, and the response of riverine CO<inf>2</inf>and CH<inf>4</inf>dynamics to the
changing environment and human activities.<br/> © 2017, Science Press. All right
reserved.
Number of references:145
Main heading:Rivers
Controlled terms:Biogeochemistry - Budget control - Carbon dioxide - Control engineering
- Dynamics - Metabolism - Physiology
Uncontrolled terms:Alternative electron acceptors - Anthropogenic disturbance - Carbon
emissions - Conceptual frameworks - River systems - Spatial and temporal variability -
Spatiotemporal variability - Terrestrial environments
Classification code:461.9 Biology - 481.2 Geochemistry - 804.2 Inorganic Compounds
DOI:10.13227/j.hjkx.201701049
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 19>
Accession number:20181705054162
Title:Removal of High Concentration of Iron, Manganese and Ammonia Nitrogen from Low
Temperature Groundwater Using Single Bio-filter
Authors:Li, Dong (1); Cao, Rui-Hua (1); Yang, Hang (2); Wang, Liu-Yu (1); Zhang, Jie (1,
2); Zeng, Hui-Ping (1)
Author affiliation:(1) Key Laboratory of Beijing for Water Quality Science and Water
Environment Recovery Engineering, Beijing University of Technology, Beijing; 100124,
China; (2) State Key Laboratory of Urban Water Resource and Environment, Harbin Institute
of Technology, Harbin; 150090, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5097-5105
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:A pilot-scale bio-filter was constructed for the removal of high concentrations
of iron (TFe 9.0-12.0 mg·L<sup>-1</sup>, Fe(II) 6.5-8.0 mg·L<sup>-1</sup>),
manganese (1.9-2.1 mg·L<sup>-1</sup>), and ammonia nitrogen (1.4-1.7
mg·L<sup>-1</sup>) simultaneously from low temperature (5-6℃) groundwater in
a plant. The results showed that iron was removed at the beginning of the bio-filter
start-up, and manganese and ammonia nitrogen were removed on day 72 and day 75,
respectively. The start-up period was influenced by the culture temperature and the raw
water quality. For higher filtration rates, the removal of manganese was lower. When the
filtration rate was more than 1.0 m·h<sup>-1</sup>, the maximum removal of
manganese was about 3.0 mg·L<sup>-1</sup>. Manganese was the limiting factor for
the increase of filtration rate, and the maximum filtration rate of the single bio-filter
was 4.5 m·h<sup>-1</sup>. When the filtration rate was less than 6.0
m·h<sup>-1</sup>, the removal of ammonia nitrogen was about 1.5 mg·L<sup>-
1</sup>, which was not affected by the filtration rate. Dissolved oxygen (DO) deficiency
led to failure with the removal of more ammonia nitrogen. The required thickness of the
bio-filter required for purification increased as the concentration of manganese and
ammonia nitrogen increased when DO was sufficient. The removed iron, manganese, and
ammonia nitrogen move to the depth of the filter layer, and there will be
“manganese dissolution” when the filtration rate is increased. Iron and
ammonia nitrogen in the filter layer can be oxidized and removed simultaneously.
Manganese is oxidized and removed after the iron and ammonia nitrogen. The effective
oxidation and removal section of manganese, iron, and ammonia nitrogen are obviously
graded.<br/> © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Chemicals removal (water treatment)
Controlled terms:Ammonia - Bandpass filters - Dissolved oxygen - Groundwater - Iron
compounds - Nitrogen - Nitrogen removal - Oxidation - Passive filters - Reactor startup
- Temperature - Water quality
Uncontrolled terms:Ammonia nitrogen - Culture temperature - Filter layers - Filtration
rates - Low temperatures - Manganese dissolution - Pilot scale - Raw water quality
Classification code:444.2 Groundwater - 445.2 Water Analysis - 621 Nuclear Reactors -
641.1 Thermodynamics - 703.2 Electric Filters - 802.2 Chemical Reactions - 804
Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 1.40e-03kg/m3 to 1.70e-03kg/m3, Mass_Density 1.50e-
03kg/m3, Mass_Density 1.90e-03kg/m3 to 2.10e-03kg/m3, Mass_Density 3.00e-03kg/m3,
Mass_Density 6.50e-03kg/m3 to 8.00e-03kg/m3, Mass_Density 9.00e-03kg/m3 to 1.20e-02kg/m3
DOI:10.13227/j.hjkx.201705096
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 20>
Accession number:20181705046678
Title:Effects of Temperature on Shortcut Nitrification and Nitrification Activity of
Nitrification in an Intermittent Aeration Sequencing Batch Reactor
Authors:Liu, Hong (1); Peng, Yong-Zhen (2); Lu, Jiong-Yuan (1); Li, Hui (1); Nan, Yan-Bin
(1); Wang, Jin (1); Chen, Yong-Zhi (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Lanzhou
Jiaotong University, Lanzhou; 730070, China; (2) National Engineering Laboratory for
Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of
Technology, Beijing; 100124, China
Corresponding author:Chen, Yong-Zhi(476411589@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4656-4663
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Real domestic sewage was treated with sequencing batch reactors (SBR). The
aerobic/anoxic modes were alternated 4 times at 30℃ and 7 times at 18℃ in a
single-cycle, respectively, and the ratio of aerobic/anoxic cycles was 30 min/30 min. The
influent concentration of ammonia and nitrite was 61.44 mg·L<sup>-1</sup>and 0.77
mg·L<sup>-1</sup>, respectively. After the experiments were run for 61 and 90
cycles, the effluent of the ammonia was 0.68 mg·L<sup>-1</sup>and 1.28
mg·L<sup>-1</sup>and the removal rate for ammonia was 98.94% and 99.57%,
respectively. The nitrite concentrations were 20.57 mg·L<sup>-1</sup>and 20.18
mg·L<sup>-1</sup>, and the nitrite accumulation rate reached 95.92% and 99.58%,
respectively. During shortcut nitrification, the activity of the ammonia oxidizing
bacteria (AOB) increased gradually before finally stabilizing at 100.00%, however the
activity of nitrite oxidizing bacteria (NOB) increased first and then decreased
gradually, the activity of AOB exceeded NOB at 32 and 74 cycles respectively, where the
AOB became the dominant bacteria and the activity of NOB was completely inhibited at 61
and 90 cycles.<br/> © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Batch reactors
Controlled terms:Activated sludge process - Ammonia - Bacteria - Effluents - Nitration -
Nitrification - Sewage - Temperature
Uncontrolled terms:Ammonia oxidizing bacteria - Effects of temperature - Influent
concentrations - Intermittent aeration - Nitrification activity - Nitrite-oxidizing
bacteria - Sequencing batch reactors - Shortcut nitrification
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal -
641.1 Thermodynamics - 802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions
- 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 1.28e-03kg/m3, Mass_Density 2.02e-02kg/m3,
Mass_Density 2.06e-02kg/m3, Mass_Density 6.14e-02kg/m3, Mass_Density 6.80e-04kg/m3,
Mass_Density 7.70e-04kg/m3, Percentage 1.00e+02%, Percentage 9.59e+01%, Percentage 9.89e
+01%, Percentage 9.96e+01%
DOI:10.13227/j.hjkx.201704277
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 21>
Accession number:20181705046687
Title:Microbial Community Diversity and Differences in Cellar water of Typical Rainwater
Harvesting Area
Authors:Yang, Hao (1, 2); Zhang, Guo-Zhen (1); Yang, Xiao-Ni (3); Wu, Fu-Ping (1); Zhao,
Wei (1); Zhang, Hong-Wei (1); Zhang, Xiang (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Lanzhou
Jiaotong University, Lanzhou; 730070, China; (2) Key Laboratory of Urban Stormwater
System and Water Environment, Ministry of Education, Beijing; 100044, China; (3) College
of Natural Resources and Environment, Gansu Agricultural University, Lanzhou; 730070,
China
Corresponding author:Zhang, Guo-Zhen(guozhenzhang126@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4733-4746
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In order to explore the natural change mechanisms for cellar water quality for
typical rainwater harvesting and drinking water surfaces in China, the MiSeq high-
throughput sequencing method was used to study the differences between characteristics of
microbial communities and functional diversity regarding collecting and making use of
rainwater. This is achieved through constructing combined modes of different types of
catchment areas and water-storing cellars. The results of this study show that there is
significant differences in microbial community structure and function. The main factors
causing this difference are heterogeneity of internal and external environmental factors
regarding cellar water. The diversity of microbial community structures in cellar water
show patterns of a large number of rare species and few common species. There are
different significant microbial communities at different water points. The differences in
the functional diversity of microbial communities shows that gene sequences that encode
metabolic functions have significant advantages over other functional gene sequences, and
amino acid, carbohydrate, lipid, energy, vitamin, terpenoid and polyketide, nucleotide,
and glycan metabolism, as well as the biosynthesis of other secondary metabolites, are
the main functional groups that compose metabolic function. This shows that there are a
large number of microorganisms with relatively specific ecological functions in cellar
water and many active metabolic activities are involved. Cellar water quality can be
improved through combined modes of concrete collecting surfaces and water-storing cellars
for collection and storage of rainwater. The results of the study aim to deepen the
understanding of cellar water microbial community structures and diversity to be used as
a reference for improving water quality and selecting the water surfaces for rainwater
harvesting.<br/> © 2017, Science Press. All right reserved.
Number of references:34
Main heading:Potable water
Controlled terms:Biochemistry - Catchments - Discriminant analysis - Genes - Harvesting -
Ketones - Metabolism - Metabolites - Microorganisms - Rain - Throughput - Water quality
Uncontrolled terms:Community complexity - Effect size - Functional genes - High-
throughput sequencing - Microbial communities - Rain water harvesting
Classification code:443.3 Precipitation - 444 Water Resources - 445.2 Water Analysis -
461.2 Biological Materials and Tissue Engineering - 461.9 Biology - 801.2 Biochemistry
- 804.1 Organic Compounds - 821.3 Agricultural Methods - 922 Statistical Methods
DOI:10.13227/j.hjkx.201702128
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 22>
Accession number:20181705046664
Title:Major Ionic Features and Their Possible Controls in the Water of the Niyang River
Basin
Authors:Zhang, Tao (1); Cai, Wu-Tian (1); Li, Ying-Zhi (1); Zhang, Zhi-Yin (1); Geng,
Ting-Ting (1); Bian, Chao (1); Zhao, Miao (1); Cai, Yue-Mei (1)
Author affiliation:(1) Center for Hydrogeology and Environmental Geology, China
Geological Survey, Baoding; 071051, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4537-4545
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In order to study the hydrochemical characteristics and their possible controls
for the chemical composition of the water from the Niyang River Basin, 30 samples were
collected from wells, springs, and the river in 2014 and major ion concentrations were
measured. Descriptive statistics, the Gibbs figure, an ion ratio, and Piper triangular
diagrams were used to investigate the hydrochemical characteristics, influencing factors,
and hydrochemical evolution of the water in the basin. The results showed that the major
cations in this water were Ca<sup>2+</sup>and Mg<sup>2+</sup>, accounting for more than
84% of cations and the main anions were HCO<inf>3</inf><sup>-</sup>and
SO<inf>4</inf><sup>2-</sup>, accounting for more than 97% of anions The hydrochemical
typology of the water is HCO<inf>3</inf>·SO<inf>4</inf>
(SO<inf>4</inf>·HCO<inf>3</inf>)-Ca·Mg (Mg·Ca). The total dissolved
solids (TDS) in the water ranges from 79.11 to 290.48 mg·L<sup>-1</sup>with an
average of 165.21 mg·L<sup>-1</sup>. The chemical composition of water samples is
located to the left of the Gibbs model, which indicates that the chemical process of
Niyang River Basin are controlled by rock weathering. According to the principal
component analysis and correlation analysis, the hydrochemical composition is controlled
by silicate weathering, however, carbonate weathering also plays an important role.<br/>
© 2017, Science Press. All right reserved.
Number of references:35
Main heading:Weathering
Controlled terms:Chemical analysis - Factor analysis - Hydrochemistry - Ion sources -
Positive ions - Principal component analysis - Rivers - Silicates - Watersheds
Uncontrolled terms:Chemical compositions - Chemical weathering - Descriptive statistics -
Element ratios - Hydrochemical characteristics - Hydrochemical evolution - Major ions -
Total dissolved solids
Classification code:444.1 Surface Water - 481.2 Geochemistry - 922.2 Mathematical
Statistics - 932.1 High Energy Physics
Numerical data indexing:Mass_Density 1.65e-01kg/m3, Mass_Density 7.91e-02kg/m3 to 2.90e-
01kg/m3, Percentage 8.40e+01%, Percentage 9.70e+01%
DOI:10.13227/j.hjkx.201704051
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 23>
Accession number:20181705046692
Title:Short-term Effects of Nitrogen Deposition on CO<inf>2</inf>and CH<inf>4</inf>Fluxes
from Wetlands in the Minjiang River Estuary
Authors:Li, Dong-Dong (1, 2); Tong, Chuan (1, 2, 3); Tan, Li-Shan (1, 2); Chen, Kun-Long
(1, 2); Sun, Dong-Yao (1, 2); Huang, Jia-Fang (1, 2, 3)
Author affiliation:(1) School of Geographical Sciences, Fujian Normal University, Fuzhou;
350007, China; (2) Research Centre of Wetlands in Subtropical Region, Fujian Normal
University, Fuzhou; 350007, China; (3) Key Laboratory of Humid Sub-tropical Eco-
geographical Process of Ministry of Education, Fujian Normal University, Fuzhou; 350007,
China
Corresponding author:Huang, Jia-Fang(wahugeo@fjnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4782-4789
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In order to evaluate the effects of nitrogen deposition on CO<inf>2</inf>and
CH<inf>4</inf>fluxes from a Cyperus malaccensis marsh in the Min River estuary at
Daoqingzhou, Fujian, static chamber-gas chromatography (GC) techniques were used.
CO<inf>2</inf>and CH<inf>4</inf>fluxes at a control (CK)[0 g·
(m<sup>2</sup>·a)<sup>-1</sup>], N1[24 g·(m<sup>2</sup>·a)<sup>-
1</sup>], N2[48 g·(m<sup>2</sup>·a)<sup>-1</sup>], and N3[96 g·
(m<sup>2</sup>·a)<sup>-1</sup>] were measured and analyzed and the related
environmental factors were recorded. The results show that, (1) compared to the control
treatment, the effects of nitrogen deposition on the CO<inf>2</inf>fluxes for N1 and N3
increased by 20.30% and 4.06%, respectively, whereas the CO<inf>2</inf>fluxes for N2
reduced by 10.05%, furthermore, the CO<inf>2</inf>fluxes under different treatments were
not significantly different (P>0.05), except for the N2 and N3 treatments in December
(P<0.05). (2) Compared to the control treatment, the effects of nitrogen deposition on
CH<inf>4</inf>fluxes at N1, N2, and N3 were increased by 64.51%, 30.23%, and 80.57%,
respectively, whereas the CH<inf>4</inf>fluxes under different treatments were not
significantly different (P>0.05). (3) There was significant positive correlation
between CO<inf>2</inf>and CH4 fluxes and soil temperature (P<0.05), however, the
CO<inf>2</inf>and CH<inf>4</inf>fluxes were not significant with regards to soil pH and
soil EC (P>0.05).<br/> © 2017, Science Press. All right reserved.
Number of references:47
Main heading:Carbon dioxide
Controlled terms:Estuaries - Gas chromatography - Nitrogen - Rivers - Soils - Wetlands
Uncontrolled terms:CH4 flux - CO2 fluxes - Freshwater marshes - Minjiang River estuaries
- Nitrogen deposition
Classification code:407.2 Waterways - 483.1 Soils and Soil Mechanics - 802.3 Chemical
Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Percentage 1.01e+01%, Percentage 2.03e+01%, Percentage 3.02e+01%,
Percentage 4.06e+00%, Percentage 6.45e+01%, Percentage 8.06e+01%
DOI:10.13227/j.hjkx.201704165
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 24>
Accession number:20181705054148
Title:Characteristics Analysis of the Surface Ozone Concentration of China in 2015
Authors:Duan, Xiao-Tong (1); Cao, Nian-Wen (1); Wang, Xiao (1); Zhang, Yu-Xin (1); Liang,
Jing-Shu (1); Yang, Si-Peng (1); Song, Xiu-Yu (1)
Author affiliation:(1) Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters, Key Laboratory for Aerosol-Cloud-Precipitation of China
Meteorological Administration, Nanjing University of Information Science and Technology,
Nanjing; 210044, China
Corresponding author:Cao, Nian-Wen(nwcao@nuist.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:4976-4982
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Surface ozone concentration data from 189 cities in China in 2015 were processed
by ArcGIS software in order to obtain the characteristics of the surface ozone
concentration, such as time and space, topographical features, temperature, etc. The
trend for surface ozone concentration was a decrease followed by an increase in China in
2015. The concentrations during the four seasons followed the order:
summer>autumn>spring>winter, and the maximum appeared in July. The ozone
pollution of East China, South China, and North China were more serious than other
regions in China. The variation of longitude had a small influence on the ozone
concentration, while the influence of latitude is significant. According to the analysis
contrasting three different topographies in the same latitude, the influence of
topography on ozone concentration was negligible. Furthermore, the research found a
significant positive correlation between surface ozone concentration and
temperature.<br/> © 2017, Science Press. All right reserved.
Number of references:31
Main heading:Ozone
Controlled terms:Correlation methods - Temperature - Topography
Uncontrolled terms:Arcgis softwares - Characteristics analysis - Ozone concentration -
Positive correlations - Surface ozone concentrations - Temporal and spatial variation -
Topographical features - Variation in characteristics
Classification code:641.1 Thermodynamics - 804 Chemical Products Generally - 922.2
Mathematical Statistics - 951 Materials Science
DOI:10.13227/j.hjkx.201703045
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 25>
Accession number:20181705046689
Title:Degradation Process of Exogenous Naphthenic Acids and Their Effects on Microbial
Community Structure in Soil
Authors:Liu, Yan-Qiu (1); Zhao, Yan-Ran (1); Liu, Meng-Jiao (1); Fan, Hao (1); Huang, Yi
(1)
Author affiliation:(1) State Key Joint Laboratory of Environmental Simulation and
Pollution Control, College of Environmental Science and Engineering, Peking University,
Beijing; 100871, China
Corresponding author:Huang, Yi(yhuang@pku.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4756-4762
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Naphthenic acids (NAs) are a natural component of petroleum, which account for
about 2% of severe ecological toxicity in addition to polycyclic aromatic hydrocarbons.
With the growth in demand for energy, a large number of NAs have leaked into soil
environments through oil industry processes, which have caused enormous potential threats
to human health and ecosystems. However, there are few studies about the degradation
process of exogenous NAs and their effects on microbial community structures in soil.
This research explores the degradation process of NAs and their dynamics in microbial
communities in soil by adding a high concentration of 180 mg·kg<sup>-1</sup>of NAs
to natural, clean soil with the aid of liquid chromatography and high-throughput
sequencing technologies. This study found that: (1) Natural clean soil has a strong
capability to degrade high concentration of NAs with about 50% of the NAs degraded within
5 days, which stabilized at 80% after 30 days of the experiment; (2) Pollution with NAs
obviously alters the microbial community structure as the number of specific OTU
increased and were mainly distributed in phylum of unidentified Proteobacteria and
Bacteroidetes; (3) Under high concentrations of NAs, the content of Bacteroidetes and
Acidobacteria phylum and the γ-Proteobacteria of Proteobacteria phylum all
increased swiftly and were speculated to be a potential agents for NA degradation, with
the relative abundance ratio of Bacteroidetes and Acidobacteria increasing from 4.2% and
2% to 20.3% and 5.5%, respectively, while a 24.8% decrease was found in Actinobacteria
phylum; (4) This study revealed the degradation process of exogenous NAs and their
effects on microbial community structure in soil, which provided scientific support for
the ecological restoration of petroleum pollution and further study in this area.<br/>
© 2017, Science Press. All right reserved.
Number of references:27
Main heading:Soil pollution
Controlled terms:Biodegradation - Ecosystems - Health risks - Liquid chromatography -
Microorganisms - Organic acids - Polycyclic aromatic hydrocarbons - Soils - Throughput
Uncontrolled terms:Bacteria community structures - Ecological restoration - High-
throughput sequencing - Microbial communities - Microbial community structures -
Naphthenic acid - Natural degradation - Petroleum pollutions
Classification code:454.3 Ecology and Ecosystems - 461 Bioengineering and Biology -
483.1 Soils and Soil Mechanics - 804.1 Organic Compounds
Numerical data indexing:Age 1.37e-02yr, Age 8.22e-02yr, Percentage 2.00e+00%, Percentage
2.00e+00% to 2.03e+01%, Percentage 2.48e+01%, Percentage 4.20e+00%, Percentage 5.00e+01%,
Percentage 5.50e+00%, Percentage 8.00e+01%
DOI:10.13227/j.hjkx.201703221
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 26>
Accession number:20181705046682
Title:Storage and Reactivation of Anaerobic Ammonium Oxidation (ANAMMOX) Sludge at Room
Temperature
Authors:Huang, Jia-Lu (1); Wang, Xiao-Long (1); Gao, Da-Wen (1)
Author affiliation:(1) State Key Laboratory of Urban Water Resource and Environment,
Harbin Institute of Technology, Harbin; 150090, China
Corresponding author:Gao, Da-Wen(gaodw@hit.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4687-4695
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Slow growth rates limit the widespread application of anaerobic ammonia
oxidation (ANAMMOX) reactions, which presents a need for the study of long-term storage
and rapid reactivation of ANAMMOX sludge. Under room temperature conditions
(14~30℃), this study investigated the effects of storage duration on the residual
activity and the activity after reactivation of ANAMMOX sludge without the addition of
external substances. The chosen storage durations were 15, 30, 45, 60, 75 and 100 days,
respectively. The results show that the residual specific ANAMMOX activities (SAAs) of
the stored ANAMMOX sludge were 90.9%, 64.3%, 61.7%, 43.2%, 25.8% and 19.3% of the initial
activity (activity before sludge storage) after 15, 30, 45, 60, 75 and 100 days,
respectively. Therefore, the residual SAA decreases linearly with an increase in the
storage duration of ANAMMOX sludge (R<sup>2</sup>was 0.978). The SAAs after reactivation
with a storage duration of 15, 30, 45, 60 and 75 days were all higher than the initial
SAA and reached 103.4%, 129.3%, 124.8%, 111.7% and 116.9% of the initial SAA before its
storage, respectively. However, the SAA after reactivation after storage for 100 days was
just 98.9% of the initial SAA. In conclusion, after as long as 100 days of storage
duration under room temperature, the residual SAA of ANAMMOX sludge decreases to 0.051 3
g·(g·d)<sup>-1</sup>, and its ANAMMOX activity can still be recovered after
9.5 days of reactivation culture.<br/> © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Nitrogen removal
Controlled terms:Ammonia - Oxidation - Wastewater treatment
Uncontrolled terms:Anaerobic ammonium oxidation - ANAMMOX - Long-term storage -
Reactivation - Residual activity - Room-temperature conditions - Sludge storage -
Specific Anammox activity
Classification code:452.4 Industrial Wastes Treatment and Disposal - 802.2 Chemical
Reactions - 804.2 Inorganic Compounds
Numerical data indexing:Age 1.64e-01yr, Age 2.05e-01yr, Age 2.60e-02yr, Age 2.74e-01yr,
Percentage 1.03e+02%, Percentage 1.12e+02%, Percentage 1.17e+02%, Percentage 1.25e+02%,
Percentage 1.29e+02%, Percentage 1.93e+01%, Percentage 2.58e+01%, Percentage 4.32e+01%,
Percentage 6.17e+01%, Percentage 6.43e+01%, Percentage 9.09e+01%, Percentage 9.89e+01%
DOI:10.13227/j.hjkx.201704159
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 27>
Accession number:20181705046684
Title:Anaerobic Reduction Process Characteristics and Microbial Community Analysis for
Sulfate and Fe(II)EDTA-NO/Fe(III)EDTA
Authors:Zhang, Yu (1); Wan, Fang (1); Zhou, Ji-Ti (1)
Author affiliation:(1) Key Laboratory of Industrial Ecology and Environmental Engineering
(MOE), School of Environmental Science and Technology, Dalian University of Technology,
Dalian; 116024, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4706-4714
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Based on biological flue gas desulfurization technology (Bio-FGD) and chelating
absorption-biological regeneration technology (BioDeNO<inf>x</inf>), simultaneous
desulfurization and denitrification by biological methods combined with chelating
absorption technology has been proposed in this study. This technique uses an alkaline
absorption liquid with Fe(II)EDTA to absorb the SO<inf>2</inf>and NO in the flue gas. In
this study, an attempt is made to simultaneously remove sulfate (SO<inf>4</inf><sup>2-
</sup>) and Fe(II)EDTA-NO/Fe(III)EDTA, which are the SO<inf>2</inf>and NO absorption
byproducts in an anaerobic reactor. The results indicate that average removal
efficiencies for SO<inf>4</inf><sup>2-</sup>and Fe(II)EDTA-NO of 95.16% and 96.61%,
respectively, were achieved when the hydraulic residence time (HRT) and pH were
controlled at 16 h and 7.0. The reduction products of SO<inf>4</inf><sup>2-</sup>were
mainly in the form of S<sup>2-</sup>in the liquid phase and hydrogen sulfide
(H<inf>2</inf>S) in the gas phase, while the reduction products of Fe(II)EDTA-NO was
N<inf>2</inf>. The reduction of Fe(III)EDTA could be achieved at all stages of the
operation, however, the reduction rate decreases with a reduction in the HRT. In the
fifth stage, the main sulfate-reducing bacteria (SRB) in the reactor was
Desulfomicrobium, a heterotrophic denitrifying bacteria, Pseudomonas, and two types of
sulfur autotrophic denitrifying bacteria, Sulfurimonas and Sulfurovum, which coexisted.
Two genera of bacteria that can also reduce sulfur, Thermovirga and Mesotoga, were also
identified in the reactor.<br/> © 2017, Science Press. All right reserved.
Number of references:31
Main heading:Iron compounds
Controlled terms:Alkalinity - Bacteria - Byproducts - Chelation - Denitrification -
Desulfurization - Flue gases - Flues - Gas absorption - Reduction - Sulfur - Sulfur
compounds
Uncontrolled terms:Biological regeneration - Denitrifying bacteria - Flue gas
desulfurization - Hydraulic residence time - Microbial community analysis - Simultaneous
desulfurization and denitrification - Sulfate reducing bacteria - Sulfate reduction
Classification code:451.1 Air Pollution Sources - 801.1 Chemistry, General - 802.2
Chemical Reactions - 802.3 Chemical Operations - 804 Chemical Products Generally
Numerical data indexing:Percentage 9.52e+01%, Percentage 9.66e+01%, Time 5.76e+04s
DOI:10.13227/j.hjkx.201704227
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 28>
Accession number:20181705054161
Title:Relative Importance of Factors Influencing Iron Release in Drinking Water
Distribution Systems
Authors:Liu, Ying (1); Yu, Ying (2, 3); Shi, Bao-You (2, 3); Liu, Shu-Ming (1); Wu, Xue
(1)
Author affiliation:(1) Division of Drinking Water Safety, School of Environment, Tsinghua
University, Beijing; 100084, China; (2) Key Laboratory of Drinking Water Science and
Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences,
Beijing; 100085, China; (3) University of Chinese Academy of Sciences, Beijing; 100049,
China
Corresponding author:Shi, Bao-You(byshi@rcees.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5090-5096
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Iron release in drinking water distribution systems (DWDSs) has attracted
significant attention in recent years. There are many factors influencing iron release in
DWDSs. In this study, we select pH, dissolved oxygen (DO), alkalinity (Alk), hardness,
chloride (Cl<sup>-</sup>), sulfate (SO<inf>4</inf><sup>2-</sup>), temperature (T), and
hydraulic retention time (HRT) as factors to investigate. Stepwise regression and partial
correlation analysis are used as methods for establishing nonlinear power exponent iron
release models and determining the relative importance of these factors by comparing
standardized regression coefficients and partial correlation coefficients. The results
show that the iron release models fit well. The important factors are
SO<inf>4</inf><sup>2-</sup>, HRT, Cl<sup>-</sup>, and T, and the relative importance of
the effect of the factors on iron release is SO<inf>4</inf><sup>2-
</sup>≈HRT>Cl<sup>-</sup>>T, when measured by standardized regression
coefficients; whereas, the important factors are HRT, SO<inf>4</inf><sup>2-</sup>, Alk,
Cl<sup>-</sup>, and T, and the order of importance is HRT>SO<inf>4</inf><sup>2-
</sup>>Alk>Cl<sup>-</sup>>T, when measured by partial correlation coefficients.
Combining these two results, we conclude HRT, SO<inf>4</inf><sup>2-</sup>, and Cl<sup>-
</sup>are the most important factors affecting iron release in pipes for the conditions
in this study. The relative importance of T and Alk changes depending on the actual
situation.<br/> © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Potable water
Controlled terms:Alkalinity - Biochemical oxygen demand - Chlorine compounds -
Correlation methods - Dissolved oxygen - Iron - Regression analysis - Sulfur compounds -
Water distribution systems
Uncontrolled terms:Hydraulic retention time - In-pipe - Iron release - Partial
correlation - Power exponent - Standardized regression coefficients - Stepwise regression
Classification code:444 Water Resources - 446.1 Water Supply Systems - 545.1 Iron -
801.1 Chemistry, General - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201703249
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 29>
Accession number:20181705046675
Title:Removal of Antimony from Water by Nano Zero-Valent Iron/Activated Carbon Composites
Authors:Jiang, Ting (1); Bao, Yue (2); Li, Wei (1); Fang, Rong-Ye (1); Shi, Hui-Xiang (1)
Author affiliation:(1) Department of Environmental Engineering, Zhejiang University,
Hangzhou; 310058, China; (2) Zhejiang Huanke Environment Consultancy Company, Hangzhou;
310000, China
Corresponding author:Shi, Hui-Xiang(huixiang_shi@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4632-4640
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Nano zero-valent iron/activated carbon (nZVI/AC) composites were prepared via
liquid phase chemical precipitation and then characterized by X-ray diffraction, X-ray
photoelectron spectroscopy, scanning electron microscopy and Brunauer-Emmett-Teller
theoretical methods for an analysis of the structure, morphology, physical and chemical
characteristics of the composites. The effects of the reaction system, nZVI loading,
initial pH, and dosage on antimony removal were investigated and the removal mechanisms
were discussed. These results indicate that nZVI/AC can be successfully prepared via
liquid phase chemical precipitation. In an N<inf>2</inf>atmosphere, a dosage of 0.2
g·L<sup>-1</sup>, 15% nZVI/AC with an initial pH of 7.5 (the pH of raw water) was
prepared. After a reaction duration of 2 h, the removal rate of Sb(V) had reached 76.2%
and the effluent concentration had decreased to only 23.8 μg·L<sup>-1</sup>.
These results show that Fe<sup>2+</sup>plays a major mechanistic role in the removal of
Sb(V) from the system and is the major active substance in the reaction process. In
combination with an analysis of elemental Sb on the surface of the nZVI/AC before and
after reaction, the removal process relies on the reduction of Fe(0) and Fe<sup>2+</sup>,
Sb(V) reducted into Sb(III) and through adsorption removal.<br/> © 2017, Science
Press. All right reserved.
Number of references:33
Main heading:Antimony compounds
Controlled terms:Activated carbon - Antimony - Carbon carbon composites - Chemical
analysis - Chemicals removal (water treatment) - Effluents - Iron - pH - Scanning
electron microscopy - X ray diffraction - X ray photoelectron spectroscopy
Uncontrolled terms:Brunauer emmett tellers - Chemical precipitation - Dyeing wastewater -
Effluent concentrations - Nano zero-valent irons - NZVI - Physical and chemical
characteristics - Removal mechanism
Classification code:415.4 Structural Materials Other Than Metal, Plastics or Wood -
452.3 Industrial Wastes - 545.1 Iron - 546.4 Antimony and Alloys - 801.1 Chemistry,
General - 804 Chemical Products Generally
Numerical data indexing:Mass_Density 2.00e-01kg/m3, Mass_Density 2.38e-05kg/m3,
Percentage 7.62e+01%, Time 7.20e+03s
DOI:10.13227/j.hjkx.201704249
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 30>
Accession number:20181705054156
Title:Characteristics of Nitrogen Variation and Its Response to Rainfall: A Case Study in
Wuxi Port at Taihu Lake Basin
Authors:Lian, Hui-Shu (1); Liu, Hong-Bin (1); Li, Xu-Dong (2); Song, Ting (3, 4); Liu,
Shen (1, 5); Lei, Qiu-Liang (1); Ren, Tian-Zhi (6); Wu, Shu-Xia (1); Li, Ying (1)
Author affiliation:(1) Key Laboratory of Nonpoint Source Pollution Control, Institute of
Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences,
Beijing; 100081, China; (2) School of Agriculture and Biology, Shanghai Jiao Tong
University, Shanghai; 200240, China; (3) School of Environmental Science and Engineering,
Nanjing University of Information Science & Technology, Nanjing; 210044, China; (4)
Wuxi Environmental Monitoring Centre, Wuxi; 214121, China; (5) Aisino Corporation Inc.,
Beijing; 100195, China; (6) Agro-Environmental Protection Institute, Ministry of
Agriculture, Tianjin; 300191, China
Corresponding author:Lei, Qiu-Liang(leiqiuliang@caas.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5047-5055
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Based on monitoring data of the water quality in the Wuxi port estuary of Taihu
Lake from 2010 to 2015, we studied the temporal variation characteristics of nitrogen and
its response to rainfall in Wuxi port. The results showed that the pollution level in
Wuxi port is serious, with an average annual total nitrogen (TN) concentration of (4.41-
5.92 mg·L<sup>-1</sup>), worse than the water environment quality grade V standard
(2 mg·L<sup>-1</sup>). The ammonia nitrogen (NH<inf>4</inf><sup>+</sup>-N)
concentration was 1.09-1.72 mg·L<sup>-1</sup>. The concentrations of TN and
NH<inf>4</inf><sup>+</sup>-N showed obvious seasonal variations, with the concentration
of TN and NH<inf>4</inf><sup>+</sup>-N in summer and autumn higher than in spring and
winter. The concentration of TN in 2015, 2012, and 2011 was 5.92, 5.82, and 5.47
mg·L<sup>-1</sup>, respectively, which was significantly higher than in 2013 and
2014. The concentration of NH<inf>4</inf><sup>+</sup>-N in 2011 (1.72 mg·L<sup>-
1</sup>) was higher than in 2013 and 2015. With the increase of rainfall intensity, the
TN concentration showed an increase after the first downward trend and then a decrease,
while the NH<inf>4</inf><sup>+</sup>-N concentration increased first and then decreased.
In addition, the nitrogen concentration in the non-flood season was higher than in the
flood season.<br/> © 2017, Science Press. All right reserved.
Number of references:35
Main heading:Water pollution
Controlled terms:Ammonia - Floods - Lakes - Nitrogen - Rain - Water quality
Uncontrolled terms:Ammonia nitrogen - Inflow waters - Nitrogen concentrations - Rainfall
intensity - Seasonal variation - Temporal variability - Temporal variation - Total
nitrogen
Classification code:443.3 Precipitation - 445.2 Water Analysis - 453 Water Pollution -
804 Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 1.09e-03kg/m3 to 1.72e-03kg/m3, Mass_Density 1.72e-
03kg/m3, Mass_Density 2.00e-03kg/m3, Mass_Density 4.41e-03kg/m3 to 5.92e-03kg/m3,
Mass_Density 5.47e-03kg/m3
DOI:10.13227/j.hjkx.201704185
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 31>
Accession number:20181705046680
Title:Laboratory-scale CANON Processes Applied to Wastewater Treatment Plants
Authors:Li, Dong (1); Zhao, Shi-Xun (1); Wang, Jun-An (2); Zhu, Jin-Feng (1); Guan,
Hong-Wei (1); Zhang, Jie (1, 3)
Author affiliation:(1) Key Laboratory of Beijing for Water Quality Science and Water
Environment Recovery Engineering, Beijing University of Technology, Beijing; 100124,
China; (2) Technology Research and Development Center, Beijing Sander Environmental
Group, Beijing; 101102, China; (3) State Key Laboratory of Urban Water Resource and
Environment, Harbin Institute of Technology, Harbin; 150090, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4673-4678
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:A laboratory-scale completely autotrophic nitrogen removal over nitrite (CANON)
process was operated in a municipal wastewater treatment plant (WWTP). Sewage effluent
treated by the anaerobic/oxic (A/O) process and was used to operate a WWTP to obtain the
initial substance for the start-up of a CANON filter reactor. On the 48th day, the
ammonia removal rate was measured at greater than 90% in successive 10 d samples and the
nitrogen removal rate was greater than 70%. The CANON filter was successful at start up.
From the 49th to the 129th day, the dissolved oxygen in the reactor was maintained at
fairly low concentration of 0.2-0.5 mg·L<sup>-1</sup>. The effluent contained
nearly no ammonia and the maximum total nitrogen (TN) concentration was 15.6
mg·L<sup>-1</sup>, which exceeded the national Class 1A Discharge Standards for
pollutants from municipal wastewater treatment plants. Nitrite oxidizing bacteria (NOB)
proliferated excessively in the reactor. Backwash was implemented on 129th, 169th and
213th days. The nitrogen removal rate was more than 70% for a long time and TN
concentration in effluent was below 12 mg·L<sup>-1</sup>. The nitrogen
concentration in effluent fitted the national Class 1A Discharge Standards and the NOB
were effectively inhibited. These results show that backwash has negligible on the
structure of filter and its impact on the thickness of the bio-membrane and its
functional bacteria was small, however, it is capable of effectively inhibiting the
activity of the NOB. Periodically backwashing can be utilized as an engineering
application to maintain stable operation of the CANON process.<br/> © 2017, Science
Press. All right reserved.
Number of references:27
Main heading:Wastewater treatment
Controlled terms:Ammonia - Bacteria - Dissolved oxygen - Effluent treatment - Effluents -
Filtration - Nitrogen removal - Passive filters - Reclamation - Sewage - Sewage pumping
plants - Toxicity - Water treatment plants
Uncontrolled terms:Backwash - CANON - Domestic wastewater - Filter - Nitrite-oxidizing
bacteria
Classification code:445.1 Water Treatment Techniques - 452 Municipal and Industrial
Wastes; Waste Treatment and Disposal - 461.7 Health Care - 703.2 Electric Filters -
802.3 Chemical Operations - 804.2 Inorganic Compounds
Numerical data indexing:Electric_Current 1.00e+00A, Mass_Density 1.20e-02kg/m3,
Mass_Density 1.56e-02kg/m3, Mass_Density 2.00e-04kg/m3 to 5.00e-04kg/m3, Percentage
7.00e+01%, Percentage 9.00e+01%
DOI:10.13227/j.hjkx.201705064
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 32>
Accession number:20181705054176
Title:Effect of pH Value on Autotrophic Denitrification Process of Zero Valent Iron
Substrate
Authors:Zhang, Ning-Bo (1, 2); Li, Xiang (1, 2); Huang, Yong (1, 2)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Institute of Environmental
Biotechnology, Suzhou University of Science and Technology, Suzhou; 215009, China
Corresponding author:Huang, Yong(yhuang@mail.usts.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5208-5214
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Using a substrate with zero valent iron and nitrate, the research determined the
change of pH value in the iron autotrophic denitrification process and the effect of pH
on zero valent iron autotrophic denitrification activated sludge using batch experiments
and a continuous flow fermenter denitrification rate. Batch experiments were carried out
with four reactor bottles with sludge addition. The initial pH values were 6.2, 6.7, 7.5,
and 8.8, respectively, and there was an initial pH of 6.7 in a bottle without sludge
addition. The results showed that the initial pH value of 6.7 obtained the highest
nitrogen removal rate. For the bottle without sludge addition, the pH rose to about 10.
The pH value of the four batch experiments was concentrated between 7.5-7.8 in the
follow-up process, so there was no significant difference in the effects of pH on
denitrifying bacteria. However, the pH value in the fermenter can be controlled stably by
an acid-base pump. With five pH gradients of 6, 6.5, 7, 7.5, and 8, the adaptability and
activity of microorganisms under a constant pH value were observed separately. The sludge
activity was the highest at pH 6.5, and the highest nitrogen removal rate was 1.35
mg·(L·h)<sup>-1</sup>.<br/> © 2017, Science Press. All right reserved.
Number of references:20
Main heading:pH effects
Controlled terms:Activated sludge process - Bacteria - Bottles - Denitrification -
Fermenters - Iron compounds - Iron research - Nitrogen removal
Uncontrolled terms:Denitrification rate - Denitrifying bacteria - pH value - Sludge
activity - Zero-valent iron
Classification code:452.2 Sewage Treatment - 545.1 Iron - 694.2 Packaging Materials -
801.1 Chemistry, General - 802.1 Chemical Plants and Equipment - 802.2 Chemical
Reactions
DOI:10.13227/j.hjkx.201705040
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 33>
Accession number:20181705046701
Title:Interactions between Goethite and Humic Acid and the Stability of Goethite-Humic
Acid Complex
Authors:Wang, Rui (1); Zhu, Chao-Ju (2); Xiang, Wen-Jun (2); Fang, Dun (1); Yang, Xiao-
Hong (1); Wu, Shao-Wei (1); Wei, Shi-Yong (1)
Author affiliation:(1) Department of Chemistry and Environmental Engineering, Hubei
University for Nationalities, Enshi; 445000, China; (2) School of Chemistry and Chemical
Engineering, Sichuan University of Arts and Science, Dazhou; 635000, China
Corresponding author:Wei, Shi-Yong(weishiyong2007@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4860-4867
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Goethite-humic acid complex was prepared in a suspension containing goethite and
humic acid. X-ray diffraction (XRD) results showed that the crystal structure of this
complex had no obvious changes compared to pure goethite, but the peak intensity of the
complex was slightly reduced. Transmission electron microscopy (TEM) images indicated
that the surface of the goethite was coated by particles of humic acid. Compared to the
infra-red (IR) spectra of goethite and humic acid, the anti-vibrational frequencies of
COO<sup>-</sup>and the vibrational frequencies of ≡Fe-OH decreased by 20 cm<sup>-
1</sup>and 9 cm<sup>-1</sup>, respectively, while the vibrational frequencies of the
associated hydroxyls increased by 10 cm<sup>-1</sup>and the absorption band of carboxylic
C-O and free hydroxyls almost disappeared. This indicates that the interactional
mechanisms between goethite and humic acid include the monodentate coordination of Fe
(III)-carboxylate and hydrogen-bonds. Thermogravimetry/differential thermogravimetry
(TG/DTG) analysis showed that the temperature of the weight loss peak for ≡Fe-OH in
goethite and the complex were 258℃ and 276℃, respectively. This indicates
that the coating of humic acid enhances the heat stability of ≡Fe-OH in goethite.
Compared with humic acid, the temperature of the weight loss peak for aliphatic organics
and aromatic organics in complex decreased by 60℃ and 26℃, respectively and
the ratio of weight loss from aliphatic organics to aromatic organics in complex
increased. This indicates that organics with a lower heat stability may be more easily
adsorbed onto goethite and the affinity to goethite was higher for the aliphatic organics
than for aromatic organics. After ultrasonic dispersion, the content of large particles
(≥2 μm) decreased significantly for both goethite and humic acid, but the content
and the size of large particles in the complex changed only slightly.<br/> © 2017,
Science Press. All right reserved.
Number of references:34
Main heading:Suspensions (fluids)
Controlled terms:Aromatic compounds - Aromatization - Biological materials -
Carboxylation - Convergence of numerical methods - Crystal structure - High resolution
transmission electron microscopy - Hydrogen bonds - Iron compounds - Organic acids -
Stability - Thermogravimetric analysis - Transmission electron microscopy - X ray
diffraction
Uncontrolled terms:Aromatic organics - Goethite - Humic acid - Interaction -
Interactional mechanism - Large particles - Monodentate coordination - Weight loss peaks
Classification code:461.2 Biological Materials and Tissue Engineering - 741.3 Optical
Devices and Systems - 801 Chemistry - 801.4 Physical Chemistry - 802.2 Chemical
Reactions - 804 Chemical Products Generally - 804.1 Organic Compounds - 921.6
Numerical Methods - 933.1.1 Crystal Lattice
DOI:10.13227/j.hjkx.201704110
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 34>
Accession number:20181705046681
Title:Effects of Magnetic Activated Carbon with Different Particle Sizes on Sludge
Granulation in a SBR System
Authors:Xin, Xin (1); Guan, Lei (1); Guo, Jun-Yuan (1); Liu, Jie (1); Feng, Mei (1); Yu,
Ting-Ting (1)
Author affiliation:(1) College of Resources and Environment, Chengdu University of
Information Technology, Chengdu; 610225, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4679-4686
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In this paper, 1.5 g·L<sup>-1</sup>of magnetic activated carbon with
different particle sizes being 80, 140, 200, and 300 mesh (numbered 2, 3, 4, 5) were
inoculated into the same sequencing batch reactor (SBR). The sludge volume index (SVI),
particle size distribution characteristics, changes of extracellular proteins (PN),
polysaccharide (PS), and polymeric substances (EPS) and their decontamination capability
were studied and compared with a control group without addition (numbered 1). The results
show that different particle diameters of magnetic activated carbon have certain
influences on the granulation process. For example, it is easier for activated sludge to
form aerobic granular sludge (AGS) when particle size are 140 mesh and 200 mesh acting as
an inner core. Under these conditions, the AGS has a close structure and good
sedimentation characteristics. Gaussian distribution was adopted to analyze the
characteristics of Tparticle size distribution and standard deviations. The average
diameter of the sludge in 3# and 4# all reached 780 μm within 50 days, which was
higher than other reactors, with the same standard deviations being 318.9 μm and 362.3
μm respectively, which is lower than 2# and 3#. Besides, the granular sludge formed in
both reactors was uniform in size and stable in operation. Different particle sizes of
magnetic activated carbon were beneficial for the enhancement of proteins (PN),
especially those with appropriate diameters (140 and 200 mesh), but had little effects on
polysaccharides (PS). The formation of aerobic granular sludge based-magnetic activated
carbon was in accordance with the inert kernel model. Meanwhile, the PN/PS in 3# and 4#
were obviously higher than other SBRs with the same removal rate of TN and TP reaching
50% and 60% respectively.<br/> © 2017, Science Press. All right reserved.
Number of references:21
Main heading:Particles (particulate matter)
Controlled terms:Activated carbon - Activated sludge process - Batch reactors - Granular
materials - Granulation - Magnetic bubbles - Mesh generation - Particle size - Particle
size analysis - Proteins - Size distribution - Statistics
Uncontrolled terms:Aerobic granular sludges - Different particle sizes - Extracellular
proteins - Granulation process - Magnetic activated carbon - Sedimentation characteristic
- Sequencing batch reactors - Sludge volume index
Classification code:452.2 Sewage Treatment - 701.2 Magnetism: Basic Concepts and
Phenomena - 723.5 Computer Applications - 802.1 Chemical Plants and Equipment - 802.3
Chemical Operations - 804 Chemical Products Generally - 804.1 Organic Compounds - 922.2
Mathematical Statistics - 951 Materials Science
Numerical data indexing:Age 1.37e-01yr, Mass_Density 1.50e+00kg/m3, Percentage 5.00e+01%,
Percentage 6.00e+01%, Size 3.19e-04m, Size 3.62e-04m, Size 7.80e-04m
DOI:10.13227/j.hjkx.201703163
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 35>
Accession number:20181705046667
Title:Effects of Optimized Fish Farming on the Sediment Nutrients of Eastern Lake Taihu
Authors:He, Xiao-Wei (1, 2); Chu, Yu (1, 2); Zeng, Jin (2); Zhao, Da-Yong (1); Lu, Jian-
Ming (3); Cao, Ping (3); Wu, Qing-Long (2)
Author affiliation:(1) State Key Laboratory of Hydrology-Water Resources and Hydraulic
Engineering, Hohai University, Nanjing; 210098, China; (2) State Key Laboratory of Lake
Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of
Sciences, Nanjing; 210008, China; (3) Taihu Fishery Management Committee Office, Suzhou;
215004, China
Corresponding author:Zeng, Jin(jzeng@niglas.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4562-4569
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The farming of lake fisheries is an important part of the freshwater fishery
industry in China. However, farming patterns of traditional fisheries maintain serious
negative effects on the ecosystem of Eastern Lake Taihu. In recent years, the enclosure
culture model of this lake has been optimized. In order to investigate the effects of
aquaculture on the sediment properties, samples were collected from different areas of
the lake (i.e. within the culture areas, outside the culture areas; from the crab-plant
co-culture areas, mixed culture areas, ecological restoration areas, and control areas),
in different months (January, March, April, August, and November), and at different
depths (0-1 cm and 9-10 cm). The results of this sampling indicates that (1) the
concentrations of total nitrogen (TN) and total phosphorus (TP) in the sediments samples
collected within the culture areas are slightly higher than samples collected outside the
culture areas; (2) compared to the crab-plant co-culture areas, lower concentrations of
TN and TP are found in the samples collected from the mixed culture areas; (3) in the
ecological restoration areas, aquatic plants exhibit certain positive effects with
decreasing concentrations of TN and TP in the sediment. The lowest concentrations of TN
and TP are detected in the sediment during the growing season of aquatic plants.<br/>
© 2017, Science Press. All right reserved.
Number of references:26
Main heading:Sediments
Controlled terms:Aquaculture - Ecology - Fisheries - Lakes - Restoration - Shellfish
Uncontrolled terms:Culture modeling - Ecological restoration - Fishery industry - Lake
taihu - Nitrogen and phosphorus - Physicochemical characteristics - Sediment nutrients -
Sediment properties
Classification code:454.3 Ecology and Ecosystems - 461.9 Biology - 483 Soil Mechanics
and Foundations - 821.3 Agricultural Methods
Numerical data indexing:Size 0.00e+00m to 1.00e-02m, Size 9.00e-02m to 1.00e-01m
DOI:10.13227/j.hjkx.201705088
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 36>
Accession number:20181705046696
Title:Effects of UV-B Radiation on Soil Carbon and Nitrogen Transformation under
Different Soil Moisture Contents from Two Paddy Fields
Authors:Jiang, Meng-Die (1); Wang, Qiu-Min (1, 2); Xu, Peng (1); Zhou, Wei (1); Wu, Lei
(1); Hu, Rong-Gui (1, 3)
Author affiliation:(1) College of Resources and Environment, Huazhong Agricultural
University, Wuhan; 430070, China; (2) Xiangyang Environmental Monitoring Station,
Xiangyang; 441000, China; (3) Ecological Environment Center, Huazhong Agricultural
University, Wuhan; 430070, China
Corresponding author:Hu, Rong-Gui(rghu@mail.hzau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4819-4827
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Carbon and nitrogen in soils play an important role in the global carbon and
nitrogen cycle. The enhancement of ultraviolet radiation (predominantly UV-B) resulting
from the depletion of stratospheric ozone has raised significant concern. The effects of
UV-B radiation on soil carbon and nitrogen transformation is connected directly to the
physical and chemical properties of the soil. In order to clearly understand the effects
of soil moisture on UV-B radiation, this study collected soil samples from two paddy
fields with different levels of organic matter in a subtropical region of China. The
response of the total organic carbon (TOC), dissolved organic carbon (DOC), ammonia
nitrogen (NH<inf>4</inf><sup>+</sup>-N), nitrate nitrogen (NO<inf>3</inf><sup>-</sup>-N)
and cumulative net nitrogen mineralization to UV-B radiation under three different
moisture gradients (W1=25%, W2=50%, and W3=100%) were monitored in laboratory for 120 h.
After this period, the results were compared with a control treatment (CK) and it was
found that: the TOC content had significantly decreased under UV-B radiation (p<0.05).
From low to high moisture content (W1, W2 and W3), the TOC decreased by 9.9%, 4.5% and
6.3%, respectively for soil with low organic matter (L), and by 10.9%, 5.6% and 6.3%,
respectively for soil with high organic matter (H), under UV-B radiation. However, UV-B
radiation was found to enhance the DOC content in the soil compared with the CK.
Furthermore, the DOC for soil moisture contents under 100% (W3) was higher than for other
moisture contents (W1, W2). The measured DOC increased by 21.5% (W1), 9.4% (W2), and
26.3% (W3) for soil with L. In addition, the measured DOC increased by 26.7% (W1), 14.2%
(W2) and 33.8% (W3) for soil with H under UV-B radiation after 120 h. Compared with
control treatment (CK), UV-B radiation decreased the NH<inf>4</inf><sup>+</sup>-N content
significantly, but there was an increased NO<inf>3</inf><sup>-</sup>-N content. The
decrease of the NH<inf>4</inf><sup>+</sup>-N content was largest for W3 and smallest for
W1. The increase in NO<inf>3</inf><sup>-</sup>-N content was largest for W2 and smallest
for W1 for the two soil samples under UV-B radiation. UV-B radiation demonstrated an
obvious effect on the cumulative net nitrogen mineralization (p<0.05) after 24 h
compared with the CK and the effect of different soil moisture treatment was also
significant (p<0.05). Overall, light degradation played a major role in the
stabilization of soil organic matter, soil moisture, and UV-B radiation could accelerate
the loss of soil organic carbon and has a major impact on the transformation of mineral
nitrogen in the soil. Therefore, in agricultural production systems, completely bare
surfaces should be avoided. For example, paddy rice-upland crop rotation systems could
reduce the use of fallow periods.<br/> © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Organic carbon
Controlled terms:Agriculture - Biogeochemistry - Biological materials - Mineralogy -
Moisture determination - Ozone layer - Radiation effects - Soil moisture - Soil surveys -
Stabilization - Stream flow
Uncontrolled terms:Agricultural production system - Dissolved organic carbon - Mineral
nitrogen - Nitrogen mineralization - Physical and chemical properties - Soil organic
matters - Total Organic Carbon - UVB radiation
Classification code:407.2 Waterways - 461.2 Biological Materials and Tissue Engineering
- 481.2 Geochemistry - 482 Mineralogy - 483.1 Soils and Soil Mechanics - 804 Chemical
Products Generally - 804.1 Organic Compounds - 821 Agricultural Equipment and Methods;
Vegetation and Pest Control - 944.2 Moisture Measurements
Numerical data indexing:Percentage 1.09e+01%, Percentage 4.50e+00%, Percentage 5.60e+00%,
Percentage 6.30e+00%, Percentage 9.90e+00%, Time 4.32e+05s, Time 8.64e+04s
DOI:10.13227/j.hjkx.201704022
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 37>
Accession number:20181705046658
Title:Characteristics and Sources of Water Soluble Inorganic Ions in Fine Particulate
Matter During Winter in Xuzhou
Authors:Fan, Mei-Yi (1); Cao, Fang (1); Zhang, Yuan-Yuan (1); Bao, Meng-Ying (1); Liu,
Xiao-Yan (1); Zhang, Wen-Qi (1); Gao, Song (2); Zhang, Yan-Lin (1)
Author affiliation:(1) Yale-NUIST Center on Atmospheric Environment, Nanjing University
of Information Science & Technology, Nanjing; 210044, China; (2) Jiangsu Electric
Power Company Research Institute, Nanjing; 210000, China
Corresponding author:Cao, Fang(caofangle@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4478-4485
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:A total of 32 daily PM<inf>2.5</inf>samples were collected from December 2016 to
February 2017 in the urban area of Xuzhou city. Water-soluble inorganic ions (WSIIs),
including F<sup>-</sup>, Cl<sup>-</sup>, NO<inf>3</inf><sup>-</sup>,
SO<inf>4</inf><sup>2-</sup>, Na<sup>+</sup>, Mg<sup>2+</sup>, NH<inf>4</inf><sup>+</sup>,
K<sup>+</sup>and Ca<sup>2+</sup>, were determined by ion chromatography. The average mass
concentration of PM<inf>2.5</inf>was (164.8±77.3) μg·m<sup>-3</sup>and
the average total mass concentration of the nine ions was (67.5±36.1)
μg·m<sup>-3</sup>, the contribution of the WSIIs to the PM<inf>2.5</inf>was
more than 40.9%. The order of the concentrations of individual ions was
NO<inf>3</inf><sup>-</sup>>SO<inf>4</inf><sup>2-</sup>>NH<inf>4</inf><sup>
+</sup>>Cl<sup>-</sup>>Ca<sup>2+</sup>>K<sup>+</sup>>Na<sup>
+</sup>>Mg<sup>2+</sup>>F<sup>-</sup>. NH<inf>4</inf><sup>+</sup>,
NO<inf>3</inf><sup>-</sup>, and SO<inf>4</inf><sup>2-</sup>(SNA) were the major
components of the water-soluble ions in the PM<inf>2.5</inf>measurement. The average mass
concentration of WSIIs in clean air, mild haze, and severe haze was (12.8±8.8),
(59.0±22.8) and (86.3±36.0) μg·m<sup>-3</sup>, respectively. The
contribution of SNA to WSIIs was 86.4%, 82.8%, and 78.9%, respectively. The correlation
between each component of SNA with each other was significant. NH<inf>4</inf><sup>
+</sup>, NO<inf>3</inf><sup>-</sup>, and SO<inf>4</inf><sup>2-</sup>were in the form of
(NH<inf>4</inf>)<inf>2</inf>SO<inf>4</inf>and NH<inf>4</inf>NO<inf>3</inf>. Secondary
formation, biomass burning, fossil fuel combustion, and dust were the major sources of
the water-soluble ions in PM<inf>2.5</inf>.<br/> © 2017, Science Press. All right
reserved.
Number of references:27
Main heading:Ions
Controlled terms:Fossil fuels - Ion chromatography - Nitrogen compounds - Particles
(particulate matter)
Uncontrolled terms:Haze - PM2.5 - Source - Water soluble inorganic ions - Xuzhou
Classification code:801 Chemistry - 951 Materials Science
Numerical data indexing:Percentage 4.09e+01%, Percentage 7.89e+01%, Percentage 8.28e+01%,
Percentage 8.64e+01%
DOI:10.13227/j.hjkx.201703178
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 38>
Accession number:20181705054149
Title:Effects of Different Precious Metal Loads of CDPF on Characteristics of VOCs
Emissions from a Diesel Bus
Authors:Lou, Di-Ming (1); Zhang, Zi-Jun (1); Liu, Ji-Yue (1); Tan, Pi-Qiang (1); Hu,
Zhi-Yuan (1)
Author affiliation:(1) School of Automotive Studies, Tongji University, Shanghai; 201804,
China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:4983-4990
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Based on heavy chassis dynamometers, an experimental study was conducted in a
diesel bus with proton transfer reaction mass spectrometry (PTR-MS). It investigated the
effects of volatile organic compound (VOC) emission characteristics with three different
diesel oxidation catalyst (DOC)+catalyzed diesel particulate filter (CDPF) after-
treatments for a typical Chinese city bus driving cycle (CCBC). The results reveal that
the major compounds from the diesel bus are OVOCs, aromatic hydrocarbons, alkenes,
alkanes, nitrogenous organic compounds, and polycyclic aromatic hydrocarbons (PAH), and
that the OVOCs account for more than 50%of the total VOCs. With the same precious metal
composition and ratio of the proportion in the CDPF catalyst, the emissions of VOCs
decrease with an increase in precious metal load. The emission reduction rates of the
VOCs are 36.2%, 40.1%, and 41.4%, respectively, when the precious metal loads are 15
g·ft<sup>-3</sup>(type A after-treatment device), 25 g·ft<sup>-3</sup>(type
B), and 35 g·ft<sup>-3</sup>(type C). The average emission rates of alkanes for
the three kinds of DOC+CDPF after-treatments are all over 59% for the entire CCBC cycle.
The type C after-treatment device can reduce the alkane emissions by 70.2%, with a slight
advantage for the OVOC reduction compared with type A and type B devices. For unsaturated
hydrocarbons, including aromatic hydrocarbons, alkenes, and PAHs, the after-treatment
devices have a catalytic effect, but there is no significant difference between them. The
emissions of nitrogenous organic compounds are greatly decreased, by 50.5%, with the type
A after-treatment, but the reduction rate decreases with an increase in precious metal
load. In addition, OVOCs, aromatic hydrocarbons, and alkenes are the most important
contributors to ozone formation. The adoption of DOC+CDPF reduces the emissions of VOCs
and, therefore, the ozone formation potential. Taking into account the emission reduction
rates and costs of the three different after-treatments and for weighting coefficients of
0.8 and 0.2, respectively, the type B after-treatment is the optimal solution.<br/>
© 2017, Science Press. All right reserved.
Number of references:27
Main heading:Polycyclic aromatic hydrocarbons
Controlled terms:Air filters - Aromatization - Buses - Catalysis - Catalysts - Diesel
engines - Dynamometers - Emission control - Fuel filters - Mass spectrometry - Ozone -
Paraffins - Particulate emissions - Precious metals - Proton transfer - Volatile organic
compounds
Uncontrolled terms:Catalyzed diesel particulate filters - Diesel oxidation catalyst -
Emission characteristics - Ozone formation potentials - Polycyclic aromatic hydrocarbon
(PAH) - Proton-transfer reaction mass spectrometries - Unsaturated hydrocarbons -
Volatile organic compound (VOC)
Classification code:451.1 Air Pollution Sources - 451.2 Air Pollution Control - 547.1
Precious Metals - 612.2 Diesel Engines - 663.1 Heavy Duty Motor Vehicles - 801
Chemistry - 802.2 Chemical Reactions - 804 Chemical Products Generally - 804.1 Organic
Compounds - 932.1 High Energy Physics - 943.1 Mechanical Instruments
Numerical data indexing:Percentage 3.62e+01%, Percentage 4.01e+01%, Percentage 4.14e+01%,
Percentage 5.05e+01%, Percentage 5.90e+01%, Percentage 7.02e+01%
DOI:10.13227/j.hjkx.201706059
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 39>
Accession number:20181705054178
Title:Comparison of Start-up and Stable Performance of Nitritation in Activated Sludge
and Biofilm Processes in a SBR
Authors:Sun, Yi-Qi (1); Bian, Wei (1); Wang, Meng (2); Zhao, Qing (1); Wang, Wen-Xiao
(1); Liang, Dong-Bo (1); Li, Jun (1)
Author affiliation:(1) College of Architecture and Civil Engineering, Beijing University
of Technology, Beijing; 100124, China; (2) Beijing Drainage Group Co., Ltd., Beijing;
100044, China
Corresponding author:Li, Jun(jglijun@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5222-5228
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:This study investigates the effect of increased hydraulic retention time (HRT)
and dissolved oxygen (DO) on the destruction and restoration of the performance of
activated sludge and biofilm sequencing batch reactor (SBR) nitritation after the
processes were simultaneously started up and stably operated at room temperature
(25℃). The results showed that was easier to start nitritation in an activated
sludge reactor, but nitritation was destroyed when DO was 2-2.5 mg·L<sup>-1</sup>.
The performance could be restored by reducing DO to 0.5-1 mg·L<sup>-1</sup>. The
biofilm process was not affected by DO. Prolonging HRT destroyed the stable operation of
the two processes. Compared with the method of biofilm, the activated sludge method had
less resistance, but restoring performance was better than for the biofilm process after
shortening the HRT. Subsequently, the temperature (20, 15, and 10℃) was
continuously reduced to investigate the synergistic effect of DO and temperature on
nitritation stabilization. The results showed that the reduction of temperature destroyed
the stable operation of nitritation, but the reduction of DO concentration could
compensate for the adverse effects of temperature reduction. In addition, when the
temperature was higher than 20℃, the rate of nitritation in the activated sludge
process was better than that in thebiofilm method. At low temperature (below 15℃),
a stable operation of nitritation was easier to achieve with the biofilm method. The
capacity of the activated sludge process was hardly changed at 10℃. The above
conclusions were confirmed by molecular microbiological analysis, and it was found that
the stable operation of nitritation could be achieved without complete wash-out of the
nitrite-oxidizing bacteria (NOB).<br/> © 2017, Science Press. All right reserved.
Number of references:28
Main heading:Activated sludge process
Controlled terms:Bacteria - Batch reactors - Biofilms - Dissolved oxygen - Restoration -
Temperature
Uncontrolled terms:Activated sludge - Activated sludge reactors - Hydraulic retention
time - Microbiological analysis - Nitritation - Nitrite-oxidizing bacteria - Sequencing
batch reactors - Stable performance
Classification code:452.2 Sewage Treatment - 462.5 Biomaterials (including synthetics)
- 641.1 Thermodynamics - 802.1 Chemical Plants and Equipment
Numerical data indexing:Mass_Density 2.00e-03kg/m3 to 2.50e-03kg/m3, Mass_Density 5.00e-
04kg/m3 to 1.00e-03kg/m3
DOI:10.13227/j.hjkx.201706018
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 40>
Accession number:20181705046699
Title:Effects of Repeated Freezing and Thawing and High Temperature Aging on the
Solidification and Stabilization of Arsenic Contaminated Soil
Authors:Yang, Jie (1); Qian, Zhao-Qiu (2); Wang, Jing (1)
Author affiliation:(1) Shanghai Academy of Environmental Sciences, Shanghai; 200233,
China; (2) School of Environmental and Chemical Engineering, Shanghai University,
Shanghai; 200444, China
Corresponding author:Wang, Jing(wangjingsean@sina.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4844-4849
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The impact of solidification and stabilization effects on arsenic (As)
contaminated soil before and after repeated freezing and thawing or high temperature
aging was investigated by tests of unconfined compressive strength (UCS), permeability,
leaching concentration and fractionation. The microstructure appearance of the soil was
observed using SEM. The results show that the UCS of solidified soil decreases and its
permeability increases after repeated freezing and thawing or high temperature aging. In
stabilized soil, the unstable species of As increase and the leaching concentration of As
rises accordingly after both treatments. The concentration of unstable species of As
increased accordingly by 19.81% and 25.1%, and the leaching concentration rose from 115.5
μg·L<sup>-1</sup>to 151.5 μg·L<sup>-1</sup>and 164.5
μg·L<sup>-1</sup>respectively after 300 freeze-thaw treatments or under 10 h of
high temperature aging under 80℃. In general, the influence of the effects
increases with more freeze-thaw events and higher temperature aging of longer duration.
More damage and fragmentation was observed after both treatments.<br/> © 2017,
Science Press. All right reserved.
Number of references:25
Main heading:Soil pollution
Controlled terms:Arsenic - Compressive strength - Freezing - Leaching - Soils -
Solidification - Stabilization - Thawing
Uncontrolled terms:Contaminated soils - Freezing and thawing - High temperature aging -
Leaching concentrations - Permeability increase - Stabilization effects - Temperature
aging - Unconfined compressive strength
Classification code:483.1 Soils and Soil Mechanics - 802.3 Chemical Operations - 804
Chemical Products Generally
Numerical data indexing:Mass_Density 1.15e-04kg/m3 to 1.51e-04kg/m3, Mass_Density 1.64e-
04kg/m3, Percentage 1.98e+01%, Percentage 2.51e+01%, Time 3.60e+04s
DOI:10.13227/j.hjkx.201704086
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 41>
Accession number:20181705054167
Title:Simultaneous Recovery of Nutrients from Wastewater by Mesoporous MgO-loaded Natural
Zeolital
Authors:Cheng, Xue-Jun (1); Wang, Xue-Jiang (1); Wang, Hao (1); Zhang, Zhi-Hao (1); Zhao,
Jian-Fu (1)
Author affiliation:(1) State Key Laboratory of Pollution Control and Resource Reuse,
School of Environmental Science and Engineering, Tongji University, Shanghai; 200092,
China
Corresponding author:Wang, Xue-Jiang(wangxj@tongji.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5139-5145
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Using MgO modified natural zeolite (NZ-MgO) as a settling agent, nutrients from
synthetic contaminated waters were recovered as a struvite precipitate. Different
reaction conditions, including reagent dosage, solution pH, contact time, and coexisting
calcium ions, were investigated. In order to understand the recovery mechanism, Fourier
transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) were utilized to
analyze the chemical composition of recovered precipitates, and Brunauer-Emmett-Teller
(BET) and field-emission scanning electron microscopy(SEM) were used to detect the
surface area and morphology. The results showed that NZ-MgO exhibited a strong removal
capacity, with a maximum removal capacity of 119.2 mg·g<sup>-1</sup>for phosphate
and 48.5 mg·g<sup>-1</sup>for ammonium nitrogen at a dosage of 0.4
g·L<sup>-1</sup>, initial pH of 7, and contact time of 2 h. The kinetics of both
phosphate and ammonia nitrogen followed the pseudo-second-order kinetic model
(R<sup>2</sup>>0.99), which revealed that the chemical process occurred at the solid-
liquid interface. The mechanisms for nutrient recovery by NZ-MgO were struvite
crystallization, physical adsorption, ion exchange, and electrostatic attraction, with
struvite crystallization being the main mechanism. Existing calcium ions would hinder the
simultaneous recovery of nutrients from wastewater, resulting in a struvite decline and
calcium phosphate increase.<br/> © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Nutrients
Controlled terms:Calcium phosphate - Chemical analysis - Field emission microscopes -
Fourier transform infrared spectroscopy - Ion exchange - Ions - Magnesia - Nitrogen -
Nitrogen removal - Phase interfaces - Precipitates - Recovery - Scanning electron
microscopy - Water pollution - X ray diffraction - Zeolites
Uncontrolled terms:Brunauer emmett tellers - Calcium ions - Electrostatic attractions -
Field emission scanning electron microscopy - Natural zeolites - Nutrient recovery -
Pseudo-second-order kinetic models - Struvites
Classification code:453 Water Pollution - 741.3 Optical Devices and Systems - 801
Chemistry - 801.4 Physical Chemistry - 802.2 Chemical Reactions - 804 Chemical
Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 4.00e-01kg/m3, Time 7.20e+03s
DOI:10.13227/j.hjkx.201704091
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 42>
Accession number:20181705046703
Title:Effects on Physico-chemical Parameters of Glycoside Hydrolase Family 6 Genes During
Composting of Agricultural Waste
Authors:Chen, Yao-Ning (1, 2); Gou, Yu (1, 2); Li, Yuan-Ping (3); Wu, Yan-Xin (1, 2);
Chen, Yan-Rong (1, 2); Li, Hui (4); Liu, Yao (1, 2); Wang, Yuan-Nan (1, 2); Zhang, Dao-Li
(1, 2); Zhu, Fu-Zao (1, 2); Zeng, Guang-Ming (1, 2)
Author affiliation:(1) College of Environment Science and Engineering, Hunan University,
Changsha; 410082, China; (2) Key Laboratory of Environmental Biology and Pollution
Control (Hunan University), Changsha; 410082, China; (3) College of Municipal and Mapping
Engineering, Hunan City University, Yiyang; 413000, China; (4) Institute of Biological
and Environmental Engineering, Hunan Academy of Forestry, Changsha; 410004, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4874-4881
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Polymerase chain reaction denaturing gradient gel electrophoresis (PCR-DGGE) was
used to study the changes of glycoside hydrolase family 6 (GH6 family) genes during the
composting of agricultural waste. In addition, a redundancy analysis (RDA) and Monte
Carlo permutation test were applied to determine the relationship between the changes to
the GH6 family genes and physico-chemical parameters. According to the relative
magnitudes of the influence caused by these different parameters on the changes to GH6
family genes, the eight-ranked physico-chemical parameters were pH>pile
temperature>total nitrogen (TN)>total organic matter (TOM)>C/N ratio>moisture
content>ambient temperature>water soluble carbon (WSC). The eight physico-chemical
parameters, which explained 83.1% of the variation of GH6 family genes, confirmed that
these parameters had important effects on the GH6 family genes changes. The pH (P=0.002),
pile temperature (P=0.004), and TN (P=0.004) had the most significant impacts on these
changes. These three significant factors explained 24.92%, 15.57%, and 15.04% of the
variation of GH6 family genes, respectively. There were different dominant species which
contain GH6 family genes in different stages of composting. The diversity and abundance
of GH6 family genes demonstrated these fluctuation trends. The t-value biplots based on
the RDA showed that these three significant factors had either positive or negative
correlations with the dynamic changes of GH6 family genes and the microbial species
contained within GH6 family genes can be generally be divided into five types. The
microbial community changes are reflected by the No. 4 to No. 10 bands and these had a
significant positive correlation with pile temperature and a significant negative
correlation with pH and TN. The microbial community changes reflected by the No. 20 to
No. 23 bands had a significant positive correlation with pH and TN.<br/> © 2017,
Science Press. All right reserved.
Number of references:38
Main heading:Piles
Controlled terms:Agricultural wastes - Agriculture - Chemical analysis - Composting -
Electrophoresis - Genes - Hydrolases - Microorganisms - Monte Carlo methods - pH -
Polymerase chain reaction - Sugars - Waste treatment
Uncontrolled terms:Glycoside hydrolase family 6 - Microbial communities - PCR-DGGE -
Permutation tests - Physico - chemical parameters - Polymerase chain reaction-denaturing
gradient gel electrophoreses (PCR-DGGE) - Redundancy analysis (RDA) - Water-soluble
carbons
Classification code:408.2 Structural Members and Shapes - 452.4 Industrial Wastes
Treatment and Disposal - 461.2 Biological Materials and Tissue Engineering - 461.9
Biology - 801 Chemistry - 804.1 Organic Compounds - 821 Agricultural Equipment and
Methods; Vegetation and Pest Control - 821.5 Agricultural Wastes - 922.2 Mathematical
Statistics
Numerical data indexing:Percentage 1.50e+01%, Percentage 1.56e+01%, Percentage 2.49e+01%,
Percentage 8.31e+01%
DOI:10.13227/j.hjkx.201704008
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 43>
Accession number:20181705054185
Title:Magnetic Response of Heavy Metal Pollution in Playground Dust of an Industrial Area
Authors:Yang, Meng (1); Li, Hui-Ming (2); Li, Feng-Ying (1); Wang, Jin-Hua (2); Diao,
Yi-Wei (3); Qian, Xin (2); Yang, Zhao-Ping (1); Wang, Cheng (1)
Author affiliation:(1) Jiangsu Collaborative Innovation Center of Atmospheric Environment
and Equipment Technology, School of Environmental Science & Engineering, Nanjing
University of Information Science & Technology, Nanjing; 210044, China; (2) State Key
Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing
University, Nanjing; 210023, China; (3) School of Atmospheric Physics, Nanjing University
of Information Science & Technology, Nanjing; 210044, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5282-5291
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The use of mineral magnetic measurements as a potential pollution proxy is
explored as an alternative means of monitoring heavy metal pollution in playground dust
in industrial areas. Dust samples were collected from playgrounds in an industrial area
in Nanjing. The magnetic properties of the samples were analyzed, and the total and
acid-extractable concentrations of heavy metals were measured.Mineral magnetic
concentration parameters [mean magnetic susceptibility (χ<inf>lf</inf>)
939.31×10<sup>-8</sup>m<sup>3</sup>·kg<sup>-1</sup>and saturation isothermal
remanent magnetization (SIRM) 16 618.74×10<sup>-
5</sup>A·m<sup>2</sup>·kg<sup>-1</sup>] indicate that the dust samples
contain high concentrations of magnetic minerals when compared to the non-industrial zone
of the city. High and stable S-ratio values (mean 0.97, standard deviation 0.01) indicate
the prominence of ferromagnetic minerals. Low values of anhysteretic remanent
magnetization (χ<inf>ARM</inf>)/χ<inf>lf</inf>(2.35) and χ<inf>ARM</inf>/SIRM
(0.12×10<sup>-3</sup>m·A<sup>-1</sup>) indicate predominantly coarse pseudo
single domain (PSD) and multi-domain (MD) magnetic grain size assemblages. The playground
dust is considered moderately to highly polluted, and the enrichment factor values for
Cd, Zn, Cu, and Pb indicate extremely high contamination levels in the playground dust.
Mineral magnetic parameters [χ<inf>lf</inf>, SIRM, hard isothermal remanent
magnetization (HIRM), χ<inf>ARM</inf>, and χ<inf>ARM</inf>/SIRM] reveal
significant correlations with total and acid-extractable concentrations of the trace
metals, and the correlations with total concentrations are stronger. The most significant
correlations were found with mineral magnetic concentrations (χ<inf>ARM</inf>and
SIRM) and total concentrations of the elements Mn, Ni, and Cr and the Tomlinson pollution
load index (PLI) (0.69≤r≤0.86, P<0.01). Consistent spatial characteristics
between them were also found, showing that the total concentrations of heavy metals and
magnetic parameter values are higher in the playgrounds near and downwind of the power
plant. Results of a principal component analysis indicate that anthropogenic activities
(mainly from coal consumption by power plants) are the main sources for both heavy metals
and magnetic minerals. In summary, significant correlations and consistent spatial
characteristics between heavy metal contents and magnetic parameters and the same
anthropogenic source for heavy metals and magnetic minerals confirm that magnetic
parameters could be considered as efficient indicators for heavy metal contamination in
the playground dust in industrial areas.<br/> © 2017, Science Press. All right
reserved.
Number of references:42
Main heading:Magnetic domains
Controlled terms:Air pollution - Dust - Heavy metals - Isotherms - Magnetic
susceptibility - Minerals - Pollution control - Principal component analysis - Saturation
magnetization - Trace elements
Uncontrolled terms:Anhysteretic remanent magnetizations - Environmental magnetism -
Industrial area - Isothermal remanent magnetization - Mineral magnetic measurements -
Playground - Saturation isothermal remanent magnetizations - Urban surfaces
Classification code:451 Air Pollution - 451.1 Air Pollution Sources - 482.2 Minerals -
531 Metallurgy and Metallography - 701.2 Magnetism: Basic Concepts and Phenomena -
922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201704197
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 44>
Accession number:20181705054183
Title:Pollution Characteristics, Source Analysis and Potential Ecological Risk Assessment
of Heavy Metals in Soils Surrounding a Municipal Solid Waste Incineration Plant in
Shanghai
Authors:Guo, Yan-Hai (1); Sun, Xu-Chao (1); Zhang, Shi-Bing (1); Yu, Guang-Jie (1); Tang,
Zheng (1); Liu, Zhen-Hong (1); Xue, Gang (1); Gao, Pin (1)
Author affiliation:(1) State Environmental Protection Engineering Center for Pollution
Treatment and Control in Textile Industry, College of Environmental Science and
Engineering, Donghua University, Shanghai; 201620, China
Corresponding author:Gao, Pin(pingao@dhu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5262-5271
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The contents of ten heavy metals (As, Cu, Cd, Cr, Pb, Ni, Zn, Ti, Mn, and Hg)
were determined in the surface soils surrounding a municipal solid waste incineration
plant in Shanghai using atomic spectroscopy. The spatial distribution and sources of the
detected heavy metals were studied by enrichment factor and multivariate statistical and
spatial interpolation analyses. In addition, their potential ecological risk was
assessed. The results showed that all heavy metals, except Hg and As, were detected with
mean contents ranging from 0.399 to 4 220 mg·kg<sup>-1</sup>. The mean contents of
Cu, Cd, Cr, Pb, Ni, Zn, and Mn were higher than their respective background values in
Shanghai. In particular, the mean content of Cd was 2.9 times its background value. The
results of the Pearson's correlation, principle component, enrichment factor, and spatial
distribution analyses of these heavy metals indicated that Ti, Mn, and Ni primarily
originated from natural sources, while Cd, Cr, Cu, Pb, and Zn originated from industrial
manufacturing, combustion, and traffic emissions. The potential ecological risk
assessment showed that soils surrounding the municipal solid waste incineration plant
suffered from a moderate-level risk. The mean value of the potential ecological risk
index of these detected heavy metals was 108.92, of which Cd contributed as high as
79.63%, deserving much attention.<br/> © 2017, Science Press. All right reserved.
Number of references:37
Main heading:Waste incineration
Controlled terms:Air pollution - Atomic spectroscopy - Correlation methods - Factor
analysis - Heavy metals - Industrial emissions - Multivariant analysis - Municipal solid
waste - Principal component analysis - Risk assessment - Soils - Spatial distribution -
Spatial variables measurement
Uncontrolled terms:Enrichment factors - Heavy metals in soil - Industrial manufacturing -
Potential ecological risk - Principle component - Spatial distribution analysis - Spatial
interpolation analysis - Surface soil
Classification code:451 Air Pollution - 451.1 Air Pollution Sources - 452 Municipal
and Industrial Wastes; Waste Treatment and Disposal - 452.4 Industrial Wastes Treatment
and Disposal - 483.1 Soils and Soil Mechanics - 531 Metallurgy and Metallography -
914.1 Accidents and Accident Prevention - 921 Mathematics - 922 Statistical Methods -
922.2 Mathematical Statistics - 931.3 Atomic and Molecular Physics - 943.2 Mechanical
Variables Measurements
Numerical data indexing:Percentage 7.96e+01%
DOI:10.13227/j.hjkx.201704113
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 45>
Accession number:20181705046674
Title:Zero-Valent Iron (ZVI) Activation of Persulfate (PS) for Oxidation of Arsenic (V)
Form Aqueous Solutions
Authors:Zhou, Zi-Mai (1, 2); Deng, Wen-Na (1, 2); Yang, Yi-Lin (1, 2); Sun, Yan-Qiu (1,
2); Wang, Yue (1, 2); Liu, Ting-Yi (1); Wang, Zhong-Liang (1, 2)
Author affiliation:(1) Tianjin Key Laboratory of Water Resources and Environment, Tianjin
Normal University, Tianjin; 300387, China; (2) College of Urban and Environmental
Science, Tianjin Normal University, Tianjin; 300387, China
Corresponding author:Wang, Zhong-Liang(wangzhongliang@vip.skleg.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4623-4631
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Arsenic is one of the most toxic substances yet discovered and arsenic
contamination of water has become a global environmental problem in need of a solution.
This study has identified the capacity of sodium persulfate (PS), activated by zero-
valent iron (ZVI) to remove As(V) from waste-water is much greater than the capacity of
PS alone due to the production of sulfate radicals in the process. Five parameter types
including PS and ZVI dosage, reaction temperature, initial pH value, and initial As(V)
concentration are discussed in detail. These parameters affect the removal rate dynamics
as an influencing factor of the As(V) concentration. The material structure before and
after the reaction was characterized by X-ray photoelectron spectroscopy analysis (XPS)
and scanning electron microscopy (SEM). It was demonstrated that under this solution of
20-100 mg·L<sup>-1</sup>of As(V), the removal rate of As(V) is more than 98% and a
pseudo-second order kinetic model can be used to describe the reaction. The removal
mechanism of ZVI/PS to As(V) was explored by comparing the results of X-ray photo-
electron spectroscopy of samples taken before and after reaction with ZVI/PS. PS can
accelerate the corrosion of ZVI and then promote the adsorption of As(V), moreover, it
can also form precipitates and coprecipitates with iron oxide/hydroxide to achieve an
enhanced removal of As(V).<br/> © 2017, Science Press. All right reserved.
Number of references:48
Main heading:Chemicals removal (water treatment)
Controlled terms:Corrosion - Iron oxides - Scanning electron microscopy - Sodium
compounds - Solutions - Sulfur compounds - Wastewater - X ray photoelectron spectroscopy
Uncontrolled terms:Arsenic contamination - Global environmental problems - Material
structure - Pseudo-second-order kinetic models - Reaction temperature - Removal mechanism
- Sodium persulfate - Zerovalent irons
Classification code:452.3 Industrial Wastes - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 2.00e-02kg/m3 to 1.00e-01kg/m3, Percentage 9.80e+01%
DOI:10.13227/j.hjkx.201701117
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 46>
Accession number:20181705054152
Title:Spatial and Temporal Variability of CO<inf>2</inf>Emissions from the Xin'anjiang
Reservoir
Authors:Yang, Le (1); Li, He-Peng (1); Sun, Bin-Feng (2); Yue, Chun-Lei (1)
Author affiliation:(1) Zhejiang Academy of Forestry, Hangzhou; 310023, China; (2)
Agricultural Engineering Research Institute of Jiangxi Academy of Agricultural Sciences,
Nanchang; 330200, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5012-5019
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Xin'anjiang Reservoir is the largest reservoir in eastern China, with a surface
area of 580 km<sup>2</sup>and a mean depth of 30 m. It is in an oligotrophic or
mesotrophic state at present. This study measured carbon dioxide (CO<inf>2</inf>)
emissions from the upstream river, the reservoir's main body, and the river downstream of
the Xin'anjiang Reservoir to investigate the spatial and seasonal variability of
CO<inf>2</inf>emissions from the water surface using static floating chambers and gas
chromatography. Results showed that the downstream river had, significantly, the highest
CO<inf>2</inf>emission flux [(1 535.00±1 447.46) mg·
(m<sup>2</sup>·h)<sup>-1</sup>], followed by the upstream river
[(120.39±135.41) mg·(m<sup>2</sup>·h)<sup>-1</sup>]. The reservoir's
main body had the lowest flux [(36.65-61.94) mg·(m<sup>2</sup>·h)<sup>-
1</sup>]. The high CO<inf>2</inf>emission flux in the downstream river was probably
influenced by turbulence during the discharge periods, which would allow the dissolved
CO<inf>2</inf>in the hypolimnion before the dam to be released to the atmosphere in the
watercourse of the downstream river. However, the CO<inf>2</inf>emission flux decreased
with distance to the dam, likely because of the drop in strength of the turbulence.
Moreover, there was an obvious alternation between CO<inf>2</inf>source and
CO<inf>2</inf>sink in the main body of the reservoir, with CO<inf>2</inf>sources in
autumn and winter and CO<inf>2</inf>sinks in spring and summer. The maximum and minimum
CO<inf>2</inf>emission values occurred in winter and spring, respectively. Such
variability in the CO<inf>2</inf>emissions was probably influenced by the bloom of alga
in spring and summer, because dissolved CO<inf>2</inf>in the water was absorbed by the
respiration of alga. However, hydrologic conditions were unstable in the upstream river
due to a fast water flow, so alga was difficult to bloom there, and a
CO<inf>2</inf>source was observed throughout the year, except during April and August.
The measurement of the flux from the upstream river, main body, and downstream river
required a long period for the investigation of greenhouse gas emissions to avoid
underestimating the total CO<inf>2</inf>emission from a hydroelectric reservoir
system.<br/> © 2017, Science Press. All right reserved.
Number of references:25
Main heading:Rivers
Controlled terms:Carbon dioxide - Flow of water - Gas chromatography - Gas emissions -
Greenhouse gases - Turbulence
Uncontrolled terms:Carbon dioxide emissions - CO2 emissions - CO2 sink - CO2 source -
Hydroelectric reservoirs - Hydrologic conditions - Seasonal variability - Spatial and
temporal variability
Classification code:451.1 Air Pollution Sources - 631.1.1 Liquid Dynamics - 802.3
Chemical Operations - 804.2 Inorganic Compounds
Numerical data indexing:Area 5.80e+08m2, Size 3.00e+01m
DOI:10.13227/j.hjkx.201704190
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 47>
Accession number:20181705046685
Title:Treatment Efficiency and Microbial Community Diversity in a Magnetic Field Enhanced
Sequencing Batch Reactor (SBR)
Authors:Geng, Shu-Ying (1); Fu, Wei-Zhang (1); Wang, Jing (1); Zheng, Shu-Lian (1)
Author affiliation:(1) College of Resources and Environment, Shandong Agricultural
University, Tai'an; 271018, China
Corresponding author:Fu, Wei-Zhang(sdaufwz@sdau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4715-4724
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The application of SBR reactors is becoming more common and in order to further
improve the efficiency of their treatment it has been proposed to add a magnetic field to
SBR systems. The effects of different magnetic fields on the degradation efficiency of
conventional pollutants in an SBR was studied. MiSeq high-throughput sequencing
techniques were used to analyze the diversity of microbial communities in activated
sludge under magnetic field conditions. These results show that the addition of a
magnetic field improves the performance of a SBR system to an extent and magnetic
induction effects are most obvious at 7×10<sup>-2</sup>T. This is identified
through a significant effect on the removal efficiency of total nitrogen and an increase
in the denitrification rate from 65.69% to 85.98%. It also significantly improves the
activity of sludge dehydrogenase and has a positive effect on the removal of various
pollutants. The diversity of microbial communities in activated sludge under different
magnetic field intensities shows a greater microbial abundance and diversity in the
active sludge. The bacterial domain in the experimental SBR includes 14 phyla, which are
mainly Proteobacteria (25.3%-61.5%), Bacteroidetes (18.6%-46.2%), Actonobacteria (5.3%-
47.2%), and Acidobacteria (0.4%-4.0%). Important denitrification bacteria such as
Rhodoblastus, Paracoccus of α-Proteobacteria, Alicycliphilus, Comamonas,
Xenophilus, Acidovorax, Dechloromonas, Thauera of β-Proteobacteria, Desulfovibrio of
δ-Proteobacteria and Planctomycetes, etc. at a moderate magnetic induction of
7×10<sup>-2</sup>T have a high abundance and there is an internal relationship
between this and an increase in denitrification efficiency. Polyphosphate-accumulating
organisms (PAOs) such as Acinetobacter, Pseudomonas, Propionicimonas, etc., are present
at higher levels under these conditions and follow the same trends as for the phosphorus
removal rates. There is a correlation between bacterial community structure changes and
sewage treatment efficiency in activated sludge. Applied magnetic fields have a positive
effect on sewage treatment by changing the microbial community structure.<br/> ©
2017, Science Press. All right reserved.
Number of references:33
Main heading:Magnetic field effects
Controlled terms:Activated sludge process - Bacteria - Batch reactors - Degradation -
Denitrification - Efficiency - Nitrogen removal - Pollution
Uncontrolled terms:Magnetic field enhancements - Microbial community structures -
Pollutants - Removal efficiencies - Sequencing batch reactors
Classification code:452.2 Sewage Treatment - 701.2 Magnetism: Basic Concepts and
Phenomena - 802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions - 913.1
Production Engineering
Numerical data indexing:Percentage 1.86e+01% to 4.62e+01%, Percentage 2.53e+01% to 6.15e
+01%, Percentage 4.00e-01% to 4.00e+00%, Percentage 5.30e+00% to 4.72e+01%, Percentage
6.57e+01% to 8.60e+01%
DOI:10.13227/j.hjkx.201703088
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 48>
Accession number:20181705054141
Title:Space-Time Estimations and Mapping of PM<inf>2.5</inf>Fine Particulates Based on
Multi-source Data
Authors:Xiao, Lu (1); Lang, Yi-Chao (1); Xia, Lang (3); Lou, Zhao-Han (1); Sun, Nan (1);
Huang, Li-Tong (1); Christakos, George (1, 2)
Author affiliation:(1) Institute of Islands and Coastal Ecosystems, Zhejiang University,
Zhoushan; 316021, China; (2) Department of Geography, San Diego State University, San
Diego; CA, United States; (3) Beijing Agricultural Intelligent Equipment Technology
Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing; 100089,
China
Corresponding author:Christakos, George(gchristakos@zju.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:4913-4923
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:PM<inf>2.5</inf>pollution in China has become an extreme environmental and
social problem and has generated widespread public concern. We estimate ground-level
PM<inf>2.5</inf>from satellite-derived aerosol optical depth (AOD), topography data,
meteorological data, and pollutant emissions using a new technique, Bayesian maximum
entropy (BME) combined with geographically weighted regression (GWR), to evaluate the
spatial and temporal characteristics of PM<inf>2.5</inf>exposure in an eastern region of
China in winter. The overall 10-fold cross-validation R<sup>2</sup>is 0.92, and the root
mean squared prediction error (RMSE) is 8.32 μg·m<sup>-3</sup>. The mean
prediction error (MPE) of the predicted monthly PM<inf>2.5</inf>is -0.042
μg·m<sup>-3</sup>, the mean absolute prediction error (MAE) is 4.60
μg·m<sup>-3</sup>. Compared with the results of the Geographically Weighted
Regression model-GWR (R<sup>2</sup>=0.71, RMSE=15.68 μg·m<sup>-3</sup>, MPE=-
0.095 μg·m<sup>-3</sup>, MAE=11.14 μg·m<sup>-3</sup>), the prediction
by the BME were greatly improved. In this location, the high
PM<inf>2.5</inf>concentration area is mainly concentrated in North China, the Yangtze
River Delta, and Sichuan Basin. The low concentration area is mainly concentrated in the
south of China, including the Pearl River Delta and southwest of Yunnan. Temporally,
there is migration trend from the coastal areas inland, and PM<inf>2.5</inf>pollution is
most serious in December 2015 and January 2016. It is relatively low in November 2015 and
February 2016.<br/> © 2017, Science Press. All right reserved.
Number of references:34
Main heading:River pollution
Controlled terms:Air pollution - Atmospheric aerosols - Errors - Forecasting - Mapping -
Maximum entropy methods - Meteorology - Optical properties - Regression analysis - Remote
sensing - Water analysis
Uncontrolled terms:Aerosol optical depths - Bayesian maximum entropies - Geographically
weighted regression - PM2.5 - Pollution mapping
Classification code:405.3 Surveying - 443.1 Atmospheric Properties - 451 Air Pollution
- 453 Water Pollution - 716.1 Information Theory and Signal Processing - 741.1
Light/Optics - 801 Chemistry - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201705122
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 49>
Accession number:20181705054188
Title:Uptake and Volatilization of Gaseous Elemental Mercury by Paddy Rice
Authors:Shang, Shuai (1); Tian, Pei (1); Jiang, Yu (1); Wu, Jing-Xuan (1); Jiang, Shan
(1); Deng, Hong (1, 2)
Author affiliation:(1) School of Ecological and Environmental Sciences, East China Normal
University, Shanghai; 200241, China; (2) Shanghai Key Laboratory for Urban Ecological
Processes and Eco-Restoration, East China Normal University, Shanghai; 200241, China
Corresponding author:Deng, Hong(hdeng@des.ecnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5308-5314
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Wetlands are important sinks for mercury, and its reducing substrate favors the
production of gaseous elemental mercury. In order to adapt to the anoxic condition,
wetland plants usually have developed aerenchyma to transfer oxygen from the shoots to
the roots to supply their roots respiration. In this study, a typical wetland plant,
rice, is used to investigate whether its aerenchyma can also be a channel for the
transportation of rhizosphere gaseous mercury into the atmosphere. In addition, the
underlying mechanisms will be evaluated. In this study, the roots of rice were separated
from the shoots by an air-tight chamber. Roots were exposed to saturated mercury vapor in
the root chamber, and the gaseous mercury volatilized from the leaf chamber was absorbed
by an active carbon absorbent. The results showed that gaseous elemental mercury could be
transferred to shoots after absorption by the roots. The mercury in the roots decreased
polynomially with root porosity (R=0.8309, P<0.01), while the mercury in the above
ground tissues showed a positive correlation with root surface area and root volume
(R=0.896, P<0.01; R=0.871, P<0.01). It was also indicated that the mercury absorbed
by the roots could be volatilized into the atmosphere through the leaves. The
volatilization of the mercury from the leaves increased positively with the leaf area
(R=0.897, P<0.01). There was also a significant positive correlation between the
mercury volatilization per unit leaf area and transpiration intensity (R=0.73,
P<0.01). The results proved that rice can absorb gaseous elemental mercury through its
roots and transfer it above ground for emission into the atmosphere through the stomata
of the leaves. This provides a scientific basis for further investigations to reveal
mercury behavior and its mechanisms in wetland ecosystems.<br/> © 2017, Science
Press. All right reserved.
Number of references:27
Main heading:Plants (botany)
Controlled terms:Oxygen supply - Soils - Substrates - Wetlands
Uncontrolled terms:Above-ground tissues - Aerenchyma - Gaseous elemental mercury - Leaf
Area Index - Positive correlations - Rice - Root surface area - Wetland ecosystem
Classification code:483.1 Soils and Soil Mechanics - 804 Chemical Products Generally
DOI:10.13227/j.hjkx.201704034
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 50>
Accession number:20181705046691
Title:Mercury Release Flux and Its Influencing Factors Under Four Typical Vegetation
Covers at Jinyun Mountain, Chongqing
Authors:Yang, Guang (1); Sun, Tao (1); An, Si-Wei (1); Ma, Ming (1, 2)
Author affiliation:(1) College of Resource and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Engineering Research Center for Agricultural
Non-point Source Pollution Control in the Three Gorges Reservoir Area, Chongqing; 400716,
China
Corresponding author:Ma, Ming(maming8312@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4774-4781
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In order to reveal the characteristics of mercury release flux and exchange
across the soil/atmosphere interface under different vegetation cover types, four of
these types (evergreen broad-leaved forest, bamboo forest, shrub, and grassland) were
chosen as research samples at Jinyun Mountain National Nature Reserve, Chongqing,
Continuous monitoring of the different vegetation covers, soil/atmosphere interface, and
mercury release flux was conducted, at the same time as the effects of environmental
factors were also considered. Results show that the annual average Hg emission flux for
the four kinds of forest cover have obvious differences. The overall emission performance
of Hg is ranked as: bamboo forest [17.77 ng·(m<sup>2</sup>·h)<sup>-
1</sup>]>grassland [17.58 ng·(m<sup>2</sup>·h)<sup>-1</sup>]
>shrubbery [16.87 ng·(m<sup>2</sup>·h)<sup>-1</sup>]>evergreen
broad-leaved forest [14.32 ng·(m<sup>2</sup>·h)<sup>-1</sup>]. There are
obviously seasonal differences between Hg emission and the four kinds of forested stands
in Jinyun mountain and there are significant differences among the different forests.
These differences mainly reflect that emissions in the warm season are higher than in the
cold season. There is also an obvious diurnal variation of soil mercury release flux from
different forested stands in Jinyun Mountain. Meteorological factors of light intensity,
air temperature, soil temperature, and relative humidity also effects the soil/air
interface meaning that mercury flux is not the same across land cover types. Temperature
is the main factor affecting evergreen broad-leaved forest, shrub forests, and bamboo
forests. Light intensity is the main influencing factor for grasslands.<br/> © 2017,
Science Press. All right reserved.
Number of references:28
Main heading:Forestry
Controlled terms:Atmospheric temperature - Bamboo - Landforms - Mercury (metal) - Soils -
Vegetation
Uncontrolled terms:Continuous monitoring - Emission performance - Environmental factors -
Evergreen broad-leaved forests - Jinyun mountains - Meteorological factors - Seasonal
differences - Vegetation cover
Classification code:443.1 Atmospheric Properties - 481.1 Geology - 483.1 Soils and
Soil Mechanics - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth
Metals - 811.1 Pulp and Paper
DOI:10.13227/j.hjkx.201704007
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 51>
Accession number:20181705054144
Title:Seasonal Variation of Carbon Fractions in PM<inf>2.5</inf>in Heze
Authors:Liu, Ze-Jun (1); Wu, Jian-Hui (1); Zhang, Yu-Fen (1); Liang, Dan-Ni (1); Ma, Xian
(1); Liu, Bao-Shuang (1); Feng, Yin-Chang (1); Zhang, Qin-Xun (2)
Author affiliation:(1) State Environmental Protection Key Laboratory of Urban Ambient Air
Particulate Matter Pollution Prevention and Control, College of Environmental Science and
Engineering, Nankai University, Tianjin; 300071, China; (2) Heze Environmental Monitoring
Centre, Heze; 274000, China
Corresponding author:Wu, Jian-Hui(envwujh@nankai.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:4943-4950
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:PM<inf>2.5</inf>samples were collected in Heze from August 2015 to April 2016.
Eight carbon fractions were analyzed by a thermal/optical carbon analyzer, and organic
carbon (OC) and elemental carbon (EC) analyses were obtained. The OC/EC ratio and the
correlation between OC and EC were analyzed. Secondary organic carbon (SOC) mass
concentration was estimated by the OC/EC ratio method; and eight carbon fractions were
analyzed using a principal component analysis. The results showed that: ① The
annual average mass concentrations of OC and EC were 1.2-60.6 μg·m<sup>-
3</sup>and 0.6-24.8 μg·m<sup>-3</sup>, respectively; and the characterization
of OC and EC percentages in PM<inf>2.5</inf>during different seasons were similar with
winter>spring>autumn>summer. ② The annual average OC/EC ratio was
2.6±1.0, and the correlations between OC and EC during spring, summer, autumn, and
winter were 0.91, 0.56, 0.86, and 0.75, respectively, and the estimated mass
concentration of SOC was (4.7±5.0) μg·m<sup>-3</sup>. ③The
characterization of eight carbon fractions percentages in PM<inf>2.5</inf>in the
different seasons demonstrated similar seasonal variations, with EC1 having the highest
percentage and EC3 having the lowest percentage. The result of the principal component
analysis showed that coal burning, motor vehicle emissions, and biomass burning were the
major sources of carbon.<br/> © 2017, Science Press. All right reserved.
Number of references:49
Main heading:Organic carbon
Controlled terms:Particles (particulate matter) - Principal component analysis
Uncontrolled terms:Carbon fraction - Elemental carbon - Heze - PM2.5 - Seasonal variation
Classification code:804.1 Organic Compounds - 922.2 Mathematical Statistics - 951
Materials Science
DOI:10.13227/j.hjkx.201704296
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 52>
Accession number:20181705054186
Title:Distribution Characteristics and Health Risk for Heavy Metals in Vegetables Near
the Industrial Areas in Shanghai
Authors:Zhou, Ya (1); Bi, Chun-Juan (1); Zhou, Xiao-Xiao (1); Zhang, Huan-Huan (1); Chen,
Zhen-Lou (1); Bao, Xin-Yi (1)
Author affiliation:(1) Key Laboratory of Geographic Information Science, School of
Geographic Sciences, East China Normal University, Shanghai; 200241, China
Corresponding author:Bi, Chun-Juan(cjbi@geo.ecnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5292-5298
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The concentrations of Cd, Zn, Pb, Cu, Hg, and As in vegetables collected from
the industrial areas in suburban Shanghai were analyzed before and after washing. Results
showed that the average concentrations (fresh weight) of Cd, Zn, Pb, Cu, Hg, and As in
washed vegetables were 0.023, 4.444, 0.112, 0.826, 0.004, and 0.094 mg·kg<sup>-
1</sup>, respectively. Amaranth accumulated the highest Cd, Zn, Pb, and Cu, while pakchoi
accumulated the highest Hg and As. There was no significant difference of heavy metals
between different sites. Washing vegetables prior to cooking reduced the health risk for
heavy metals related to the consumption of vegetables. A health risk evaluation indicated
that more than 55% of the Total Target Hazard Quotient (TTHQ) came from As, while the
other elements contributed less than 1, indicating that the health risk from vegetable
consumption was mainly caused by As. Children have higher health risks than adults when
eating the same vegetables.<br/> © 2017, Science Press. All right reserved.
Number of references:19
Main heading:Health risks
Controlled terms:Health - Heavy metals - Pollution - Thermal processing (foods) -
Vegetables - Washing
Uncontrolled terms:Average concentration - Distribution characteristics - Fresh weight -
Industrial area - Pakchoi - Risk evaluation - Suburban Shanghai - Target hazard quotients
Classification code:461.6 Medicine and Pharmacology - 461.7 Health Care - 531
Metallurgy and Metallography - 821.4 Agricultural Products - 822.2 Food Processing
Operations
Numerical data indexing:Percentage 5.50e+01%
DOI:10.13227/j.hjkx.201702104
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 53>
Accession number:20181705046656
Title:Characteristics and Sources of Elements of a PM<inf>10</inf>Measurements from a
Typical Industrial City in Eastern Hubei Province
Authors:Zhan, Chang-Lin (1); Zhang, Jia-Quan (1); Zheng, Jing-Ru (1); Yao, Rui-Zhen (1);
Liu, Hong-Xia (1); Xiao, Wen-Sheng (1); Liu, Xian-Li (1); Cao, Jun-Ji (2, 3)
Author affiliation:(1) Hubei Key Laboratory of Mine Environmental Pollution Control and
Remediation, School of Environmental Science and Engineering, Hubei Polytechnic
University, Huangshi; 435003, China; (2) Key Laboratory of Aerosol Chemistry &
Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an; 710061,
China; (3) Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an;
710049, China
Corresponding author:Zhang, Jia-Quan(jiaquanzh@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4463-4468
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In order to investigate the characteristics and sources of elements in
atmospheric aerosols (PM<inf>10</inf>) measurements, samples were collected between April
2012 and February 2013 in Huangshi, a typical industrial city in the east of Hubei
province, China. These samples were analyzed for seventeen elements using wavelength
dispersive X-ray fluorescence spectrometry. In addition, the pollution characteristics of
fourteen elements were analyzed by an enrichment factor (EF) method, and the sources of
these elements were studied by a principal component analysis (PCA) and positive matrix
factorization (PMF) method. The result from the EF indicated that the concentration of
the seventeen elements in the PM<inf>10</inf>measurements varied from 0.01-9.83
μg·m<sup>-3</sup>. The elemental concentration of S was the highest and Ni and
V was the lowest during the monitoring period in Huangshi. Daily levels of Pb and Cd
exceeded the annual reference values set by the National Ambient Air Quality Standard
(GB3095-2012) by 36.4% and 89.1%, respectively. An analysis of EF showed that Ti, V, Mn,
and Ni elements were mildly enriched, indicating they were affected by both natural and
anthropogenic sources. Ca, Cr, and Ba elements were moderately enriched and Cu, Zn, Pb,
Sn, Sb, and Fe were highly enriched or hyper accumulated, suggesting they are mainly
sourced from human activities. There were four sources significantly contributing to the
elements in the PM<inf>10</inf>measurement, which were determined using PCA and PMF
analysis. These were soil and fugitive dust, coal combustion, industry exhausts, and
motor vehicle emissions. The results of the two models supported each other and had good
consistency.<br/> © 2017, Science Press. All right reserved.
Number of references:43
Main heading:Principal component analysis
Controlled terms:Air quality - Atmospheric aerosols - Chemical elements - Coal combustion
- Coal dust - Coal industry - Factorization - Fluorescence spectroscopy
Uncontrolled terms:Elemental concentrations - Enrichment factors - Huangshi - National
ambient air quality standards - PM10 - Positive Matrix Factorization - Source -
Wavelength dispersive x-ray fluorescence spectrometries
Classification code:443.1 Atmospheric Properties - 451.2 Air Pollution Control - 503
Mines and Mining, Coal - 521 Fuel Combustion and Flame Research - 524 Solid Fuels -
741.3 Optical Devices and Systems - 804 Chemical Products Generally - 921 Mathematics
- 922.2 Mathematical Statistics
Numerical data indexing:Percentage 3.64e+01%, Percentage 8.91e+01%
DOI:10.13227/j.hjkx.201704023
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 54>
Accession number:20181705046558
Title:Comment on Sensitivity Analysis Methods for Environmental Models
Authors:Chen, Wei-Ping (1); Tu, Hong-Zhi (1, 2); Peng, Chi (1); Hou, Ying (1)
Author affiliation:(1) State Key Laboratory of Urban and Regional Ecology, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing; 100085,
China; (2) University of Chinese Academy of Sciences, Beijing; 100049, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4889-4896
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Environmental models have been regarded as a key method to study the complex
conditions of environmental systems. Sensitivity analysis (SA) is a vital step, which
aims to investigate the impact of model inputs on model outputs. During the application
of environmental models, SA plays a significant role in simplifying the model structure
and improving the precision and reliability of the simulation. Consequently,
identification and analysis of sensitivity parameters in environmental models is an
important issue. This paper provides an introduction to the functions of SA in
environmental models. Mathematical theories and methods used for SA are summarized, and
their applications, advantages, and limits. On this basis, development trends for the use
of SA for environmental models are proposed.<br/> © 2017, Science Press. All right
reserved.
Number of references:64
Main heading:Sensitivity analysis
Controlled terms:Uncertainty analysis
Uncontrolled terms:Development trends - Environmental model - Environmental systems -
Global sensitivity - Local sensitivity - Mathematical theory - Sensitivity parameters -
Uncertainty
Classification code:921 Mathematics - 922.1 Probability Theory
DOI:10.13227/j.hjkx.201704121
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 55>
Accession number:20181705054166
Title:Methane Cycle Anaerobic Membrane Bioreactor with Desulfurization for Treating High
Sulfate Organic Wastewater at Normal Temperature
Authors:Xu, Ting (1, 2); Jin, Yan-Qing (1, 2); Li, Yong (1, 2)
Author affiliation:(1) School of Environment Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Institute of Environmental
Biotechnology, Suzhou University of Science and Technology, Suzhou; 215009, China
Corresponding author:Li, Yong(yongli69@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5132-5138
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The operational performance of a methane cycle anaerobic membrane bioreactor
(MCAnMBR) with desulfurization for the treatment of high sulfate organic wastewater was
investigated. Within 63 days, the MCAnMBR with desulfurization was started successfully
at a normal temperature of 26-34℃. The two main problems at the beginning of
debugging, sludge loss and increased pH, were effectively solved by adjusting the gas
path system and adding methanol to the inflow for acclimation. The results show that the
inflow concentration of SO<inf>4</inf><sup>2-</sup>from 650 mg·L<sup>-1</sup>to 5
800 mg·L<sup>-1</sup>can be treated well with the conditions of hydraulic
retention time (HRT)=120 h, a volume loading of 3.61-4.36 kg·
(m<sup>3</sup>·d)<sup>-1</sup>, pH of 7.18-7.61, and temperature of 23.3-
25.4℃. The effluent chemical oxygen demand (COD) concentration could be lowered to
23 mg·L<sup>-1</sup>. The total removal rate of COD could remain stable at
96.23%-99.77%, and the SO<inf>4</inf><sup>2-</sup>conversion rate was about 83.83%-
95.51%. These results indicated that the MCAnMBR reactor with desulfurization could
effectively solve the problem of secondary sulfide inhibition. A gradient experiment
revealed that the high Na<inf>2</inf>SO<inf>4</inf>inflow could be treated when the
influent COD ranged from 18 000 mg·L<sup>-1</sup>to 21 000 mg·L<sup>-
1</sup>, the concentration of SO<inf>4</inf><sup>2-</sup>ranged between 9 082
mg·L<sup>-1</sup>and 9 600 mg·L<sup>-1</sup>, and the
COD/SO<inf>4</inf><sup>2-</sup>=2.<br/> © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Effluents
Controlled terms:Bioconversion - Bioreactors - Chemical oxygen demand - Desulfurization -
Methane - Program debugging - Sodium sulfate - Sulfur compounds - Wastewater treatment
Uncontrolled terms:Anaerobic membrane bioreactor - Conversion rates - Hydraulic retention
time - Operational performance - Organic wastewater - Sulfide inhibitions - Total removal
rates - Volume loadings
Classification code:452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and
Disposal - 461.8 Biotechnology - 723.1 Computer Programming - 801.2 Biochemistry -
804.1 Organic Compounds - 804.2 Inorganic Compounds
Numerical data indexing:Age 1.73e-01yr, Mass_Density 1.80e+01kg/m3, Mass_Density 2.30e-
02kg/m3, Mass_Density 9.08e+00kg/m3 to 9.60e+00kg/m3, Percentage 8.38e+01% to 9.55e+01%,
Percentage 9.62e+01% to 9.98e+01%
DOI:10.13227/j.hjkx.201705013
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 56>
Accession number:20181705054151
Title:Deposition of Sulfur, Nitrogen and Mercury in Two Typical Forest Ecosystems in
Southern China
Authors:Cheng, Zheng-Lin (1); Luo, Yao (1); Zhang, Ting (1); Duan, Lei (1)
Author affiliation:(1) State Key Joint Laboratory of Environmental Simulation and
Pollution Control, School of Environment, Tsinghua University, Beijing; 100084, China
Corresponding author:Duan, Lei(lduan@tsinghua.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5004-5011
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Bulk precipitation collectors and canopy throughfall collectors were applied to
measure the deposition of sulfur, nitrogen, and mercury at two forest ecology stations,
Qianyanzhou (QYZ) in Jiangxi Province and Huitong (HT) in Hunan Province, from December
2013 to November 2014. During the observation period, the volume weighted average
concentrations of SO<inf>4</inf><sup>2-</sup>-S, NO<inf>3</inf><sup>-</sup>-N,
NH<inf>4</inf><sup>+</sup>-N, and Hg at QYZ station were 1.89 mg·L<sup>-1</sup>,
0.957 mg·L<sup>-1</sup>, 0.401 mg·L<sup>-1</sup>, and 12.5
ng·L<sup>-1</sup>in the bulk precipitation, respectively, and 2.39
mg·L<sup>-1</sup>, 1.18 mg·L<sup>-1</sup>, 0.897 mg·L<sup>-1</sup>,
and 22.2 ng·L<sup>-1</sup>in the throughfall, respectively. The concentrations of
these components increased by different proportions for the bulk precipitation compared
to the throughfall. At HT station, the average concentrations of SO<inf>4</inf><sup>2-
</sup>-S, NO<inf>3</inf><sup>-</sup>-N, NH<inf>4</inf><sup>+</sup>-N, and Hg in the
throughfall were 2.93 mg·L<sup>-1</sup>, 1.60 mg·L<sup>-1</sup>, 0.502
mg·L<sup>-1</sup>, and 22.0 ng·L<sup>-1</sup>, respectively. In addition,
atmospheric deposition fluxes based on the throughfall were 3.56 g·
(m<sup>2</sup>·a)<sup>-1</sup>for sulfur, 3.02 g·(m<sup>2</sup>·a)
<sup>-1</sup>for nitrogen, and 30.6 μg·(m<sup>2</sup>·a)<sup>-1</sup>for
mercury at QYZ station, while the corresponding fluxes were 6.18 g·
(m<sup>2</sup>·a)<sup>-1</sup>, 4.48 g·(m<sup>2</sup>·a)<sup>-
1</sup>, and 37.3 μg·(m<sup>2</sup>·a)<sup>-1</sup>at HT station. The
deposition rates of all three elements were the highest in summer. The contribution of
dry deposition to the total deposition of mercury was similar to that of wet deposition,
while wet deposition contributed more to the total deposition of sulfur and nitrogen than
did dry deposition. Unlike sulfur and nitrogen depositions, which were mainly derived
from anthropogenic sources, mercury deposition might have a greater contribution from
natural sources, especially at HT station.<br/> © 2017, Science Press. All right
reserved.
Number of references:39
Main heading:Ecosystems
Controlled terms:Atmospheric chemistry - Deposition rates - Forestry - Meteorological
problems - Nitrogen
Uncontrolled terms:Acid deposition - Dry deposition - Mercury depositions - Throughfall -
Wet deposition
Classification code:443.1 Atmospheric Properties - 454.3 Ecology and Ecosystems - 804
Chemical Products Generally
Numerical data indexing:Mass_Density 1.18e-03kg/m3, Mass_Density 1.25e-08kg/m3,
Mass_Density 1.60e-03kg/m3, Mass_Density 1.89e-03kg/m3, Mass_Density 2.20e-08kg/m3,
Mass_Density 2.22e-08kg/m3, Mass_Density 2.39e-03kg/m3, Mass_Density 2.93e-03kg/m3,
Mass_Density 4.01e-04kg/m3, Mass_Density 5.02e-04kg/m3, Mass_Density 8.97e-04kg/m3,
Mass_Density 9.57e-04kg/m3
DOI:10.13227/j.hjkx.201705103
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 57>
Accession number:20181705054146
Title:Characteristics of the Size Distribution of Water-soluble Ions During a Heavy
Pollution Episode in the Winter in Tianjin
Authors:Yao, Qing (1, 2); Liu, Zi-Rui (3); Han, Su-Qin (1); Cai, Zi-Ying (1, 2); Liu,
Jing-Le (1); Huang, Xiao-Juan (3, 4); Liu, Jing-Yun (5); Wang, Yue-Si (3)
Author affiliation:(1) Tianjin Meteorological Institute, Tianjin; 300074, China; (2)
Tianjin Environmental Meteorological Center, Tianjin; 300074, China; (3) State Key
Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC),
Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing; 100029, China;
(4) Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, College of
Atmospheric Sciences, Chengdu University of Information Technology, Chengdu; 610225,
China; (5) Department of Environmental Science and Engineering, Beijing University of
Chemical Technology, Beijing; 100029, China
Corresponding author:Liu, Zi-Rui(liuzirui@mail.iap.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:4958-4967
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:To characterize the size distribution of water-soluble inorganic ions (WSII)
during a heavy pollution episode, particle samples were collected by an Andersen cascade
sampler in Tianjin in January 2014, and the concentrations of eight WSII (Na<sup>+</sup>,
NH<inf>4</inf><sup>+</sup>, K<sup>+</sup>, Mg<sup>2+</sup>, Ca<sup>2+</sup>, Cl<sup>-
</sup>, NO<inf>3</inf><sup>-</sup>, and SO<inf>4</inf><sup>2-</sup>) during a typical
haze episode were analyzed by ion chromatography. The sources and formation mechanisms of
WSII were analyzed based on their size distributions. The results showed that the daily
average concentrations of PM<inf>2.5</inf>and PM<inf>10</inf>were (138±100)
μg·m<sup>-3</sup>and (227±142) μg·m<sup>-3</sup>,
respectively, and the average concentration of total WSII concentrations (TWSII) in the
coarse and fine particles were (34.07+6.16) μg·m<sup>-3</sup>and (104.16+51.76)
μg·m<sup>-3</sup>, respectively. The concentrations of SO<inf>4</inf><sup>2-
</sup>, NO<inf>3</inf><sup>-</sup>, and NH<inf>4</inf><sup>+</sup>in the fine particles
were much higher than concentrations of the other ions, and there were strong
correlations between these three ions. The TWSII on clear days, light pollution days, and
heavy pollution days were (41.55±12.41) μg·m<sup>-3</sup>,
(94.46±31.19) μg·m<sup>-3</sup>, and (147.55±27.76)
μg·m<sup>-3</sup>, respectively. On clear days, SO<inf>4</inf><sup>2-
</sup>showed a unimodal distribution, peaking at 0.43-0.65 μm; and
NO<inf>3</inf><sup>-</sup>showed a trimodal distribution, peaking at 0.43-0.65 μm,
2.1-3.3 μm, and 5.8-9.0 μm. NH<inf>4</inf><sup>+</sup>had a bimodal distribution,
peaking at 0.43-0.65 μm and 4.7-5.8 μm. On heavy pollution days, however, the size
distributions of these three secondary inorganic ions switched to a unimodal size
distribution, peaking at 0.65-1.1 μm. Unimodal NH<inf>4</inf><sup>+</sup>mainly
coexisted with SO<inf>4</inf><sup>2-</sup>and NO<inf>3</inf><sup>-</sup>, and the excess
NH<inf>4</inf><sup>+</sup>was found to be combined with Cl<sup>-</sup>in the fine
particles. In the coarse particles, NH<inf>4</inf><sup>+</sup>completely coexisted with
SO<inf>4</inf><sup>2-</sup>and NO<inf>3</inf><sup>-</sup>.<br/> © 2017, Science
Press. All right reserved.
Number of references:39
Main heading:Water pollution
Controlled terms:Ion chromatography - Ions - Particles (particulate matter) - Size
distribution - Sodium compounds
Uncontrolled terms:Average concentration - Bimodal distribution - Particulate Matter -
Pollution episodes - Tianjin - Unimodal distribution - Unimodal size distribution -
Water-soluble ions
Classification code:453 Water Pollution - 801 Chemistry - 922.2 Mathematical
Statistics - 951 Materials Science
Numerical data indexing:Size 2.10e-06m to 3.30e-06m, Size 4.30e-07m to 6.50e-07m, Size
4.70e-06m to 5.80e-06m, Size 5.80e-06m to 9.00e-06m, Size 6.50e-07m to 1.10e-06m
DOI:10.13227/j.hjkx.201702097
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 58>
Accession number:20181705046686
Title:Molecular Research of Acid-Generating Microbial Communities in Abandoned Ores in
the Waste Dump of an Iron Mine in Anhui Province
Authors:Du, Ze-Rui (1, 2); Hao, Chun-Bo (1); Pei, Li-Xin (1); Wei, Peng-Fei (1); Zhang,
Yi (1); Lu, Yan-Chun (1)
Author affiliation:(1) School of Water Resources and Environment, China University of
Geosciences, Beijing; 100083, China; (2) Beijing Municipal Environmental Monitoring
Centre, Beijing; 100048, China
Corresponding author:Hao, Chun-Bo(chunbohao@cugb.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4725-4732
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The waste dump of an iron mine in Anhui Province has been abandoned for several
decades. Pyrite in the exposed waste ores is oxidized by acidophiles and large amounts of
metal ions and H<inf>2</inf>SO<inf>4</inf>are released, resulting in the formation of an
acid mine drainage (AMD) lake since 1970s. Besides the lake, there are also some small-
scale AMD adjacent to the newly deposited waste ore. In order to study the acid
generation potential of the waste ore and the related microbial communities, soil samples
were taken from beside the AMD lake (1LL) and small-scale AMD (5J, 5Y, 6-1, 6-2, 6-3) and
the physicochemical properties and microbial community of these samples were analyzed.
The results reveal that all of samples were highly acidic and the pH of the 1LL sample
was 2.77, while the other samples were even more acidic, at less than 2.6. The electrical
conductivity (EC) (0.32 mS·cm<sup>-1</sup>) of the 1LL sample was obviously lower
than the other samples (2.25-7.08 mS·cm<sup>-1</sup>), which indicates that the
newly deposited waste ore contains higher ion concentrations. The
Fe<sup>2+</sup>concentration of the 1LL sample was only 0.80 mg·kg<sup>-1</sup>but
the other five samples were as high as 2.91-33.40 mg·kg<sup>-1</sup>. This
suggests that most of the Fe<sup>2+</sup>in the 1LL sample has been converted to
Fe<sup>3+</sup>after long-term oxidization. High-throughput sequencing results showed
that most acidophiles in 1LL sample were Actinobacteria, Acidobacteria and Chloroflexi
but the microbes in the remaining five samples were γ-Proteobacteria, Firmicutes
and Nitrospira. The iron-sulfur oxidizing bacteria, such as Sulfobacillus,
Leptospirillum, Acidithiobacillus, were scarce in the 1LL sample, while they highly
abundant in the other five samples, which proves that the acid-generation process of the
newly deposited waste ore is strong. However, the reduced iron and sulfur in the 1LL
sample has nearly been depleted. Statistical analysis shows that the microbial
composition of the 1LL sample is significantly different to that of the five newly
deposited samples, illustrating that microbial community composition is remarkably
influenced by physicochemical conditions.<br/> © 2017, Science Press. All right
reserved.
Number of references:26
Main heading:Iron research
Controlled terms:Bacteria - Drainage - Iron mines - Lakes - Metal ions - Metals - Pyrites
- Throughput
Uncontrolled terms:Acid mine drainage - Acidophilic bacteria - High-throughput sequencing
- Microbial communities - Waste ores
Classification code:531.1 Metallurgy - 545.1 Iron
Numerical data indexing:Electrical_Conductivity 2.25e-01S/m to 7.08e-01S/m,
Electrical_Conductivity 3.20e-02S/m, Energy 5.00e+00J
DOI:10.13227/j.hjkx.201704047
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 59>
Accession number:20181705046672
Title:Distribution of External Phosphorus in the Sedimentary Phosphorus forms Under
Different Disturbances
Authors:Cai, Shun-Zhi (1); Li, Da-Peng (1); Tang, Xin-Yu (1); Li, Hao-Ran (1); Zhu, Wei
(1); Huang, Yong (1)
Author affiliation:(1) College of Environmental Science and Engineering, Suzhou
University of Science and Technology, Suzhou; 215011, China
Corresponding author:Li, Da-Peng(ustsldp@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4607-4614
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The distribution of external phosphorus (P) in the overlying water, pore water,
and sediment under different disturbances were investigated and the transformation
between internal P forms was analyzed. The results show that physical disturbances can
promote the migration of external P from the overlying water to the sediment. In
addition, the enhancement was even higher due to the bioturbation of the combined
disturbances. Noticeably, the improvement of the P migration in the control was lowest,
compared with the three disturbances. This may be attributed to the penetration of
dissolved oxygen. Meanwhile, the physical disturbance reduced the average content of
(dissolved organic phosphorus) DIP in the pore water by 12.13% (a mean of 6d and 10d),
compared with the control. However the reduction was less than that associated with the
bioturbation (38.63%) and the combined disturbance (50.79%), respectively. These three
disturbances may promote the formation of Fe/Al-P and Ca-P. The formation of Fe/Al-P and
Ca-P was largest under the physical disturbance. However, the algal-available phosphorus
(AAP) is reduced due to the physical disturbance, suggesting that physical disturbance
may promote the transformation of AAP to occluded Fe/Al-P or Ca-P.<br/> © 2017,
Science Press. All right reserved.
Number of references:38
Main heading:Phosphorus
Controlled terms:Aluminum compounds - Biochemical oxygen demand - Calcium compounds -
Dissolved oxygen - Iron compounds - Water
Uncontrolled terms:Available phosphorus - Dissolved organic phosphorus - Distribution -
Disturbances - Overlying water - Phosphorus transformations - Physical disturbance -
Synergy
Classification code:804 Chemical Products Generally
Numerical data indexing:Percentage 3.86e+01%, Percentage 5.08e+01%
DOI:10.13227/j.hjkx.201704166
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 60>
Accession number:20181705054153
Title:Evaluation of Temporal and Spatial Variation Characteristics of Nutrients in
Surface Sediment in the Three Gorges Reservoir Area
Authors:Zhuo, Hai-Hua (1); Qiu, Guang-Sheng (2); Zhai, Wan-Ying (1); Liu, Yun-Bing (1);
Lan, Jing (1)
Author affiliation:(1) Yangtze Valley Water Environment Monitoring Center, Wuhan; 430010,
China; (2) Water Resources Protection Bureau of the Yangtze River Basin, Wuhan; 430010,
China
Corresponding author:Lan, Jing(89073107@qq.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5020-5031
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:With the construction of the Three Gorges Dam, the river flow pattern and
sediment dynamics are expected to be affected. As a consequence, the sediment traits
could be impacted by these changes. The temporal and spatial variation characteristics of
the nutrient content from 2000 to 2015 in surface sediment were analyzed in the main
stream from Jiangjin to the dam site section of the Yangtze River and in the estuaries of
the representative input tributaries of the Three Gorges Reservoir, such as the Jialing
River, Yulin River, Wujiang River, Xiaojiang River, Daning River, and Xiangxi River.
Then, the state of the pollution was assessed. Results revealed that the average
concentrations of total phosphorus (TP) in the surface sediments of the main stream
ranged from 678.2 to 928.6 mg·kg<sup>-1</sup>, the average contents of total
nitrogen (TN) ranged from 0.203% to 0.362%, the average contents of potassium ranged from
1.74% to 2.37%, and the average contents of organic matter ranged from 0.94% to 1.54%.
The average concentrations of TP in the estuaries of the representative input tributaries
ranged from 490.1 to 832.3 mg·kg<sup>-1</sup>, the average contents of TN ranged
from 0.257% to 0.495%, the average contents of potassium ranged from 1.69% to 2.32%, and
the average contents of organic matter ranged from 1.21% to 2.27%. The concentrations of
TP and potassium in the study sections were generally within background concentration
ranges, while the concentrations of TN were obviously above background levels, and the
concentrations of organic matter were obviously below background levels. The nutrient
contents in the surface sediment did not display significant differences among the study
sites; however, the distributions of different nutrient contents along the river varied
widely. Although the nutrient contents in the surface sediments fluctuated somewhat
during different flow periods, they were seemingly unaffected by the impoundment, since
no obvious enrichment was observed throughout the impoundment. The evaluation of organic
index indicated a clean state for the surface sediments in the majority of the study
area, while there was a moderately polluted state in some local sections. The evaluation
of nitrogen pollution indicated a polluted state for most sections. Overall, the
nutrients in the surface sediments of the Three Gorges Reservoir showed moderate
ecological risks, possibly caused by TP and TN.<br/> © 2017, Science Press. All
right reserved.
Number of references:37
Main heading:River pollution
Controlled terms:Biogeochemistry - Biological materials - Estuaries - Flow patterns -
Forestry - Nitrogen - Nutrients - Organic compounds - Petroleum reservoir evaluation -
Potassium - Reservoirs (water) - Rivers - Surficial sediments
Uncontrolled terms:Average concentration - Background concentration - Evaluation -
Nitrogen pollution - Surface sediments - Temporal and spatial variation - Three gorges
reservoir - Three gorges reservoir area
Classification code:407.2 Waterways - 441.2 Reservoirs - 453 Water Pollution - 461.2
Biological Materials and Tissue Engineering - 481.2 Geochemistry - 483 Soil Mechanics
and Foundations - 512.1.2 Petroleum Deposits : Development Operations - 549.1 Alkali
Metals - 631.1 Fluid Flow, General - 804 Chemical Products Generally - 804.1 Organic
Compounds
Numerical data indexing:Percentage 1.21e+00% to 2.27e+00%, Percentage 1.69e+00% to 2.32e
+00%, Percentage 1.74e+00% to 2.37e+00%, Percentage 2.03e-01% to 3.62e-01%, Percentage
2.57e-01% to 4.95e-01%, Percentage 9.40e-01% to 1.54e+00%
DOI:10.13227/j.hjkx.201705127
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 61>
Accession number:20181705046673
Title:Effect of Elodea nuttallii-Immobilized Nitrogen Cycling Bacteria on the Mechanism
of Nitrogen Removal in Polluted River Water
Authors:Wang, Hao (1); Li, Zheng-Kui (1); Zhang, Yi-Pin (1); Ding, Bang-Jing (1)
Author affiliation:(1) State Key Laboratory of Pollutantion Control and Resources Reuse,
School of the Environment, Nanjing University, Nanjing; 210023, China
Corresponding author:Li, Zheng-Kui(zhkuili@nju.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4615-4622
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Surface water, Elodea nuttallii and undisturbed sediment cores from the Qinshui
River in Gonghu Bay were collected to carry out a simulation experiment in a laboratory
to study the effect of Elodea nuttallii-immobilized nitrogen-cycling bacteria on nitrogen
removal mechanisms from the river water. In this study, the transformation and fate of
ammonium among four different treatment groups were investigated by using a
stable<sup>15</sup>N isotope pairing technique combined with high-throughput sequencing
technology [Treatment A: bare sediment, Treatment B: sediment+immobilized nitrogen
cycling bacteria (INCB), Treatment C: sediment+E. nuttallii, Treatment D: sediment+INCB
+E. nuttallii]. The results of the<sup>15</sup>N mass-balance model showed that there
were three pathways to the ultimate fate of nitrogen: precipitated with the sediments,
absorbed by E. nuttallii, and consumed by microbial processes [denitrification and
anaerobic ammonium oxidation (ANAMMOX)]. The percentages of E. nuttallii assimilated in
the<sup>15</sup>NH<inf>4</inf><sup>+</sup>were 25.44% and 19.79% for treatments C and D.
The sediment storage ratio of<sup>15</sup>NH<inf>4</inf><sup>+</sup>accounted for 7.94%,
5.52%, 6.47% and 4.86% in treatments A, B, C, and D, respectively. The proportion
of<sup>15</sup>NH<inf>4</inf><sup>+</sup>lost as<sup>15</sup>N-labelled gas were 16.06%,
28.86%, 16.93% and 33.09% in the four different treatment groups, respectively.
Denitrification and anammox were the bacterial primary processes in N<inf>2</inf>and
N<inf>2</inf>O production. The abundance and diversity of microorganisms was relatively
higher in the treatment with E. nuttallii-immobilized nitrogen cycling bacteria (E-INCB)
assemblage technology applied. Furthermore, the removal rates
of<sup>15</sup>NH<inf>4</inf><sup>+</sup>were 24%, 34.38%, 48.84% and 57.74% in
treatments A, B, C and D, respectively. These results show that the E-INCB assemblage
technology may improve the capacity for nitrogen removal from the river water.<br/>
© 2017, Science Press. All right reserved.
Number of references:28
Main heading:Nitrogen removal
Controlled terms:Bacteria - Denitrification - River pollution - Rivers - Sediments -
Wastewater treatment
Uncontrolled terms:Elodea nuttallii - NH4^+ - Plant assimilation - Polluted river waters
- Sediment storage
Classification code:452.4 Industrial Wastes Treatment and Disposal - 453 Water
Pollution - 483 Soil Mechanics and Foundations - 802.2 Chemical Reactions
Numerical data indexing:Percentage 1.61e+01%, Percentage 1.69e+01%, Percentage 1.98e+01%,
Percentage 2.40e+01%, Percentage 2.54e+01%, Percentage 2.89e+01%, Percentage 3.31e+01%,
Percentage 3.44e+01%, Percentage 4.86e+00%, Percentage 4.88e+01%, Percentage 5.52e+00%,
Percentage 5.77e+01%, Percentage 6.47e+00%, Percentage 7.94e+00%
DOI:10.13227/j.hjkx.201702120
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 62>
Accession number:20181705054147
Title:Physico-chemical Characteristic Analysis of PM<inf>2.5</inf>in the Highway Tunnel
in the Plateau City of Kunming
Authors:Wang, Cheng-Hui (1); Yan, Kun (2); Han, Xin-Yu (1); Shi, Ze (2); Bi, Li-Mei (1,
2); Xiang, Feng (1, 2); Ning, Ping (1); Shi, Jian-Wu (1)
Author affiliation:(1) Faculty of Environmental Science and Engineering, Kunming
University of Science and Technology, Kunming; 650500, China; (2) Yunnan Environmental
Monitoring Center, Kunming; 650000, China
Corresponding author:Shi, Jian-Wu(shijianwu2000@sina.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:4968-4975
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:This research aimed to determine the characteristics of the motor vehicle
exhaust emissions in the plateau area. The PM<inf>2.5</inf>was evaluated in the Caohai
Tunnel of Kunming for this study by measuring the water-soluble inorganic ions,
carbonaceous species, polycyclic aromatic hydrocarbons (PAHs), and inorganic elements in
air samples. The results showed that the mass concentration of PM<inf>2.5</inf>in the
tunnel was about 225.65-312.84 μg·m<sup>-3</sup>, which is 11-14 times the
PM<inf>2.5</inf>concentration in the ambient atmosphere. The carbonaceous species were
the most abundant species, constituting 35.73% of the total PM<inf>2 5</inf>mass,
followed by inorganic elements constituting about 21.78% and the water-soluble inorganic
ions in the range of 4.79%-5.52%. The smallest proportion of the PM<inf>2.5</inf>was PAH,
constituting about 0.25%-0.32%. The Ca<sup>2+</sup>and SO<inf>4</inf><sup>2-
</sup>concentrations were the highest among the water-soluble inorganic ions, which
accounted for about 77.78%-80.17% of the total ions and from the crust source.
NH<inf>4</inf><sup>+</sup>and NO<inf>3</inf><sup>-</sup>are relatively high, coming
mainly from automobile exhausts. The 4 and 6 ring PAHs with higher molecular weight and
lower volatility were the dominant components of PM<inf>2.5</inf>in the Caohai Tunnel.
The automobile exhaust contributing to PAHs in PM<inf>2.5</inf>is very significant. The
most poisonous single BaP concentration is 23-29 times higher than the state regulations
exposure limit, and it has reached a hazardous level. It is obvious that there are health
risks from the exposure to PM<inf>2.5</inf>in the plateau highway tunnel. A principal
component analysis (PCA) showed that the sources of road dust and automobile exhaust
emission were about 61.64%, followed by mechanical wear and emissions that accounted for
about 17.49% and tire wear emission sources that accounted for 9.11% of the total
PM<inf>2.5</inf>. Under the conditions of hypobaric hypoxia in the Yun-Gui plateau, there
is a greater chance of incomplete combustion of motor vehicle fuels, resulting in the
increase in OC and PAHs in PM<inf>2.5</inf>emissions.<br/> © 2017, Science Press.
All right reserved.
Number of references:32
Main heading:Principal component analysis
Controlled terms:Automobiles - Barium compounds - Chemical analysis - Fiber optic sensors
- Fuels - Health risks - Ions - Laws and legislation - Polycyclic aromatic hydrocarbons
Uncontrolled terms:Automobile exhaust - Automobile exhaust emissions - Chemical
compositions - Incomplete combustion - Physicochemical characteristics - PM2.5 -
Polycyclic aromatic hydrocarbons (PAHS) - Water soluble inorganic ions
Classification code:461.7 Health Care - 662.1 Automobiles - 741.1.2 Fiber Optics -
804.1 Organic Compounds - 922.2 Mathematical Statistics - 971 Social Sciences
Numerical data indexing:Percentage 1.75e+01%, Percentage 2.18e+01%, Percentage 2.50e-01%
to 3.20e-01%, Percentage 3.57e+01%, Percentage 4.79e+00% to 5.52e+00%, Percentage 6.16e
+01%, Percentage 7.78e+01% to 8.02e+01%, Percentage 9.11e+00%
DOI:10.13227/j.hjkx.201702052
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 63>
Accession number:20181705054165
Title:MIL-88A@MIP Activated Persulfate for Targeted Degradation of Dibutyl Phthalate
Authors:Wang, Jiu-Mei (1); Guan, Ze-Yu (1); Wan, Jin-Quan (1, 2, 3); Wang, Yan (1, 2, 3);
Ma, Yong-Wen (1, 2, 3); Yan, Zhi-Cheng (1); Zhang, Gui-Hua (4)
Author affiliation:(1) College of Environment and Energy, South China University of
Technology, Guangzhou; 510006, China; (2) Key Laboratory of Pollution Control and
Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University
of Technology, Guangzhou; 510006, China; (3) State Key Laboratory of Pulp and Paper
Engineering, South China University of Technology, Guangzhou; 510006, China; (4)
Environmental Science Institute of Huizhou, Huizhou; 516001, China
Corresponding author:Guan, Ze-Yu(guanzeyu1@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5124-5131
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:MIL-88A@MIP was fabricated for the first time in this experiment with a metal-
organic framework of MIL-88A as the precursor based on the molecular imprinting method.
It was characterized by X-ray diffraction (XRD), scanning electronic microscopy (SEM),
energy dispersive spectrometer (EDS), and N<inf>2</inf>adsorption. The catalytic
performance of MIL-88A@MIP was tested to activate persulfate (PS) to generate
SO<inf>4</inf><sup>-·</sup>for the degradation of dibutyl phthalate (DBP), which
was used as a target pollutant. Compared with the precursor MIL-88A, the catalytic
activity of MIL-88A@MIP was improved effectively through targeted modification, and the
DBP removal rate increased 80.4% after reacting for 480 min. An experiment determining
the influencing factors showed that the optimum activation condition of the catalyst was
PS:DBP=600:1, MIL-88A@MIP dosage of 0.5 g·L<sup>-1</sup>, and pH=3.26.
Furthermore, MIL-88A@MIP shows a high capability of removing different phthalic acid
ester (PAE) contaminants that reflect its targeting selectivity.<br/> © 2017,
Science Press. All right reserved.
Number of references:21
Main heading:Catalyst activity
Controlled terms:Biodegradation - Crystalline materials - Esters - Organometallics -
Spectrometers - Targets - X ray diffraction
Uncontrolled terms:Activation conditions - Catalytic degradation - Catalytic performance
- Energy dispersive spectrometers - Metal organic framework - MIL-88A@MIP - Persulfate -
Scanning electronic microscopy (SEM)
Classification code:461.8 Biotechnology - 741.3 Optical Devices and Systems - 803
Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.1
Organic Compounds - 932.1.1 Particle Accelerators - 933.1 Crystalline Solids
Numerical data indexing:Mass_Density 5.00e-01kg/m3, Percentage 8.04e+01%, Time 2.88e+04s
DOI:10.13227/j.hjkx.201704004
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 64>
Accession number:20181705054143
Title:Aerosol Chemical Characteristics for Different Air Pollution Levels in North
Suburban Nanjing
Authors:Zhang, Cheng (1); Yu, Xing-Na (1); An, Jun-Lin (1); Zhu, Bin (1); Lin, Meng-Fan
(1)
Author affiliation:(1) Collaborative Innovation Center on Forecast and Evaluation of
Meteorological Disasters (CIC-FEMD), Key Laboratory for Aerosol-Cloud-Precipitation of
China Meteorological Administration, Nanjing University of Information Science and
Technology, Nanjing; 210044, China
Corresponding author:Yu, Xing-Na(xnyu@nuist.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:4932-4942
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:PM<inf>2.5</inf>samples were collected in a northern suburb of Nanjing during
the winter of 2015. Water soluble ions and carbonaceous substances under different air
quality levels were analyzed by an 850 professional IC-type ion chromatograph produced by
Metrohm and a Model 2001A carbon analyzer. The results show that the average mass
concentration of PM<inf>2.5</inf>, SO<inf>4</inf><sup>2-</sup>, NO<inf>3</inf><sup>-
</sup>, and NH<inf>4</inf><sup>+</sup>during heavy pollution days was 4.0, 6.4, 3.1, and
3.9 times higher than on clear days, respectively. Three main secondary ions were all in
the form of (NH<inf>4</inf>)<inf>2</inf>SO<inf>4</inf>and NH<inf>4</inf>NO<inf>3</inf>on
all days. Two kinds of acid pollution days were mainly affected by the flow source. The
proportion of fixed sources on the heavy pollution days was greater than on the
light/moderate pollution days. The highest mass concentrations of organic carbon (OC) and
elemental carbon (EC) were 49.8 μg·m<sup>-3</sup>and 10.3 μg·m<sup>-
3</sup>, respectively. The average concentration of SOC on clear days was the lowest
(4.28 μg·m<sup>-3</sup>). The proportion of secondary organic carbon (SOC) in
the OC on clear days was more than on the other two pollution days (41.14%). Coal
combustion and motor vehicle exhaust emissions were the main contributors to carbonaceous
substances by abundances of carbonaceous components.<br/> © 2017, Science Press. All
right reserved.
Number of references:47
Main heading:Organic carbon
Controlled terms:Air quality - Coal combustion - Ions - Nitrogen compounds - Particles
(particulate matter)
Uncontrolled terms:Carbonaceous components - Carbonaceous substance - Chemical
characteristic - Element carbons - Nanjing - PM2.5 - Secondary organic carbons (SOC) -
Water-soluble ions
Classification code:451.2 Air Pollution Control - 521 Fuel Combustion and Flame
Research - 524 Solid Fuels - 804.1 Organic Compounds - 951 Materials Science
Numerical data indexing:Electric_Current 2.00e+03A, Percentage 4.11e+01%
DOI:10.13227/j.hjkx.201705020
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 65>
Accession number:20181705054158
Title:Method of Improving the Water Quality of Polluted Rivers Based on the MIKE11 Model
Authors:Xiong, Hong-Bin (1); Chen, Xue (1); Zhang, Si-Si (1)
Author affiliation:(1) School of Resources and Environmental Engineering, Hefei
University of Technology, Hefei; 230009, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5063-5073
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In order to seek ways to improve the quality of polluted rivers, this study
selected the heavily polluted Yinghe River in China for study, as there is a requirement
to improve water quality from the Yangtze River to the Yinghe River. The permanganate
index and ammonia nitrogen are the main pollutant targets for the Yinghe River. This
study applies MIKE11 to set up a one-dimensional model of the hydrodynamics and water
quality using a numerical simulation method to determine the optimal method for river
water quality improvement. The simulation experiment tests the influence of factors, such
as the supplementary water flow, replenishment water quality, water replenishment
position, and method of water supply to improve the water quality. The simulation results
indicate that water quality improvement can be simulated with the hydrodynamic module
(HD) and the convective diffusion module (AD) combined with the rainfall runoff module
(NAM) in the MIKE11 model. In practice, the option with the best replenishment effect is
to use class III at point 1 and to use class IV at points 2 and 3 when the supplementary
water flow rate is 10% of the river bottom flow. The reduction in permanganate index and
ammonia nitrogen was, respectively, 72.3% and 55.7%, and over 85% of the study area
reached the standard of class IV water quality. This provides a new method for river
pollution control.<br/> © 2017, Science Press. All right reserved.
Number of references:25
Main heading:River pollution
Controlled terms:Ammonia - Flow of water - Hydraulics - Hydrodynamics - Nitrogen -
Numerical methods - Pollution control - Replenishment (water resources) - Rivers - Water
quality - Water supply
Uncontrolled terms:Convective diffusion - Method - Numerical simulation method - One-
dimensional model - Pollutant targets - Polluted rivers - River water quality
improvements - Water quality improvements
Classification code:444 Water Resources - 445.2 Water Analysis - 446.1 Water Supply
Systems - 453 Water Pollution - 631.1.1 Liquid Dynamics - 632.1 Hydraulics - 804
Chemical Products Generally - 804.2 Inorganic Compounds - 921.6 Numerical Methods
Numerical data indexing:Percentage 1.00e+01%, Percentage 5.57e+01%, Percentage 7.23e+01%,
Percentage 8.50e+01%
DOI:10.13227/j.hjkx.201703257
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 66>
Accession number:20181705046663
Title:Heavy Metals in Sediments from the Haizhou Bay Marine Ranching Based on Geochemical
Characteristics
Authors:Li, Da-Peng (1); Zhang, Shuo (2, 3); Zhang, Zhong-Fa (1); Luo, Na (1); Wei,
Qing-Qing (1); Zhang, Rui (2); Huang, Hong (1, 3)
Author affiliation:(1) College of Marine Ecology and Environment, Shanghai Ocean
University, Shanghai; 201306, China; (2) College of Marine Sciences, Shanghai Ocean
University, Shanghai; 201306, China; (3) Key Laboratory of Sustainable Exploitation of
Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai;
201306, China
Corresponding author:Huang, Hong(hhuang@shou.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4525-4536
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Marine ranching is a new sustainable production method, which plays an important
role in the transformation of China's marine economy. In this paper, Haizhou Bay marine
ranching was divided into 3 areas according to the intensity and delivery time of the
submarine structures. Five geochemical indicators of temperature (T), pH, oxidation-
reduction potential (Eh), grain size (D[3,2]) and total organic carbon (TOC) were
determined on-site. A modified European Community Bureau of Reference(BCR)sequential
extraction procedure was applied to determine the chemical speciation of different heavy
metals (i.e. Cr, Cu, Ni, Zn, Pb, and Cd). The results showed a horizontal distribution of
the Eh was influenced by the submarine structures. The TOC content ranged from 11.7 to
13.5 g·kg<sup>-1</sup>, which had a significant negative correlation with pH. Pb
and Cd mainly present in the secondary phase of iron manganese oxide forms (F2), which
were controlled by the Eh, however, Cu, Zn, Ni, and Cr were mainly present in the primary
phase. A correlation and cluster analysis indicated that the Cr, Cu, Ni, and Zn present
in sediments were from natural sources, while the Cd and Pb content obviously came from
anthropogenic metal sources. The exchangeable and carbonate fractions (F1) of Cr, Ni, Cu,
Zn, Pb, and Cd were significantly correlated with TOC. The residuals (F4) of Cr, Ni, Cu,
Zn, Pb, Cd were significantly correlated with the grain size of sediments as well as the
iron-manganese oxide forms (F2) of Cr, Ni, Cu, and Zn. A different speciation of Cd was
controlled by multiple geochemical characteristics of the sediment. The heavy metal
levels of the primary and secondary phases in the central and lateral areas were lower
than the control and medial areas because of differences in the submarine structures and
hydrodynamics. The enrichment and adsorption of Cr, Ni, Cu, and Zn in sediment was
stronger than the release of particles that were resuspended. While the influence of fine
particles and organic matter from the sediment in the central and outer areas was
limited, an enrichment factor analysis suggested that Cd in sediment showed enrichment to
some extent. This paper provides a scientific basis for the construction of marine
ranching and ecological restoration in Haizhou Bay.<br/> © 2017, Science Press. All
right reserved.
Number of references:42
Main heading:Cadmium
Controlled terms:Chemical speciation - Cluster analysis - Geochemistry - Grain size and
shape - Heavy metals - Iron oxides - Manganese oxide - Organic carbon - pH effects -
Redox reactions - Sediments - Submarines - Zinc
Uncontrolled terms:European community bureau of references - Geochemical characteristic -
Haizhou Bay - Horizontal distribution - Marine ranching - Oxidation reduction potential -
Sequential extraction procedure - Submarine structure
Classification code:481.2 Geochemistry - 483 Soil Mechanics and Foundations - 531
Metallurgy and Metallography - 546.3 Zinc and Alloys - 549.3 Nonferrous Metals and
Alloys excluding Alkali and Alkaline Earth Metals - 672.1 Combat Naval Vessels - 723
Computer Software, Data Handling and Applications - 801.1 Chemistry, General - 802.2
Chemical Reactions - 804 Chemical Products Generally
DOI:10.13227/j.hjkx.201704015
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 67>
Accession number:20181705046702
Title:Contents and Health Risks of Organic Phosphorus Esters in Plastic Runway Products
Authors:Yin, Hong-Ling (1); Liu, Qin (1); Liao, Lin-Qun (1); Wang, Zhen (1); Luo, Yi (1);
Deng, Xu (1); Ding, Jun-Gang (1); Tang, Ming (1)
Author affiliation:(1) College of Resources and Environment, Chengdu University of
Information Technology, Chengdu; 610225, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4868-4873
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Using ultrasonic assisted extraction, column chromatograph purification and gas
chromatograph-mass spectrometer(GC-MS) analysis method to quantify the contents of seven
kinds of organic phosphorus ester(OPEs) in plastic tracks in Chengdu City. The recovery
rates of this method ranged from 71.41% to 110.58% and the correlation coefficient (r) of
the standard curve was higher than 0.99, which demonstrates satisfying quality control.
Plastic track samples were collected from twelve schools in Chengdu. The results show
that OPEs are detected in two-thirds of plastic track samples. TnBP [Tri-n-butyl
phosphate] and TEHP [tris(2-ethylhexyl) phosphate] were detected with high frequency,
while TCEP [tri(2-chloroethyl) phosphate], TDCPP [tridichloropropyl phosphate] and TPhP
[triphenyl phosphate] were not detected in any samples. Contents of the total OPEs
(∑7OPEs) in the plastic track ranged from ND to 534.89 ng·g<sup>-1</sup>. TnBP
was identified at the highest content levels (ND-462.18 ng·g<sup>-1</sup>). TCPP
[Trichloropropyl phosphate], a chlorinated phosphate with higher toxicity, was detected
in one sample with a contents of 205.94 ng·g<sup>-1</sup>. The average exposure
dose for adults was 0.14 ng·(kg·d)<sup>-1</sup>, lower than that for
children of 0.64 ng·(kg·d)<sup>-1</sup>. Risk quotients of OPEs for adults
and children were only 10<sup>-7</sup>-10<sup>-5</sup>and could be ignored. These results
indicate that the government should limit the consumption, as well as the type of OPEs
which are added to plastic tracks, to protect population health.<br/> © 2017,
Science Press. All right reserved.
Number of references:21
Main heading:Health risks
Controlled terms:Air purification - Chromatography - Esters - Flame retardants - Health -
Phosphorus - Plastic products - Quality control
Uncontrolled terms:Correlation coefficient - Gas chromatograph mass spectrometers -
Organic phosphorus - Pollution level - Tri-n-butyl phosphate - Triphenyl phosphate -
Tris(2-ethylhexyl) phosphate - Ultrasonic-assisted extractions
Classification code:461.6 Medicine and Pharmacology - 461.7 Health Care - 643 Space
Heating, Ventilation and Air Conditioning - 803 Chemical Agents and Basic Industrial
Chemicals - 804 Chemical Products Generally - 804.1 Organic Compounds - 817.1 Polymer
Products - 913.3 Quality Assurance and Control
Numerical data indexing:Percentage 7.14e+01% to 1.11e+02%
DOI:10.13227/j.hjkx.201702086
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 68>
Accession number:20181705046693
Title:Effects of Plastic Film Mulching on Methane and Nitrous Oxide Emissions from a
Rice-Rapeseed Crop Rotation
Authors:Shi, Jiang-Lai (1); Hao, Qing-Ju (1); Feng, Di (1); Zhang, Kai-Li (1); Shi,
Xiao-Jun (1, 2); Jiang, Chang-Sheng (1)
Author affiliation:(1) Key Laboratory of Eco-environments in Three Gorges Reservoir
Region, Ministry of Education, College of Resources and Environment, Southwest
University, Chongqing; 400716, China; (2) National Monitoring Station of Soil Fertility
and Fertilizer Efficiency on Purple Soils, Chongqing; 400716, China
Corresponding author:Jiang, Chang-Sheng(jiangcs@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4790-4799
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:A field experiment was conducted in the Key Field Station for Monitoring of
Eco-Environment of Purple Soil of the Ministry of Agriculture of China in the farm of
Southwest University in Chongqing. Static opaque chamber and gas chromatography methods
were used to study the effect of plastic film mulching on CH<inf>4</inf>and
N<inf>2</inf>O emissions characteristics from a rice-rapeseed crop rotation in situ for
one year. The results showed that CH<inf>4</inf>and N<inf>2</inf>O emissions are mainly
concentrated in the early stages of the growth of each crop and there is a clear seasonal
variation of CH<inf>4</inf>emissions during the rice growing period and N<inf>2</inf>O in
the rapeseed growing period. The CH<inf>4</inf>flux changed from -0.45 to 1.90
mg·(m<sup>2</sup>·h)<sup>-1</sup>and the N<inf>2</inf>O flux varied between
-46.1 and 2 040.7 μg·(m<sup>2</sup>·h)<sup>-1</sup>over the entire year.
Plastic film mulching was found to increase the total emissions of CH<inf>4</inf>and
N<inf>2</inf>O, with the total CH<inf>4</inf>emission of(27.22±4.48)
kg·hm<sup>-2</sup>over the entire year, which is 26.22% higher than that of the
non-mulching treatment(19.93±0.56) kg·hm<sup>-2</sup>. The total amount of
N<inf>2</inf>O emissions under film mulching treatment increased 16.6% from
(11.27±2.77) kg·hm<sup>-2</sup>under no mulching treatment to
(13.14±0.82) kg·hm<sup>-2</sup>. The results analyzed for soil moisture and
soil temperature showed that mulching significantly increased the soil moisture during
the rapeseed season, while there was no obvious correlation with soil temperature (at
depths of 5 cm and for the surface temperature) for each crop season. During the rapeseed
growing season, CH<inf>4</inf>and N<inf>2</inf>O emissions negatively correlated with
soil moisture and has a significant negative correlation during the seedling period with
film mulching treatment. Moreover, under the two treatments, the correlation between
CH<inf>4</inf>and N<inf>2</inf>O emissions and soil temperature was negligible. This
study indicates that plastic film mulching impacts CH<inf>4</inf>and N<inf>2</inf>O
emissions at different growth stages of the crops, which changes the proportion of the
emission of the two gases over the whole growth period, and promotes the emission of
CH<inf>4</inf>and N<inf>2</inf>O in the rice-rapeseed system. In the time scale of 100
years, the integrated global warming potentials (GWP) of CH<inf>4</inf>and N<inf>2</inf>O
emission under plastic film was a CO<inf>2</inf>equivalent of 4 213.00
kg·hm<sup>-2</sup>compared with that under conventional treatment of 3 454.17
kg·hm<sup>-2</sup>. Conventional emits 22.0% less CO<inf>2</inf>, indicating that
plastic film mulching is not an effective measure for carbon sequestration.<br/> ©
2017, Science Press. All right reserved.
Number of references:34
Main heading:Film growth
Controlled terms:Carbon dioxide - Crops - Gas chromatography - Gas emissions - Global
warming - Nitrogen oxides - Oilseeds - Plastic films - Soil moisture - Temperature
Uncontrolled terms:Carbon sequestration - Conventional treatments - Different growth
stages - Emission fluxes - Emissions characteristics - Global warming potential - Nitrous
oxide emissions - Plastic film mulching
Classification code:443.1 Atmospheric Properties - 483.1 Soils and Soil Mechanics -
641.1 Thermodynamics - 802.3 Chemical Operations - 804.2 Inorganic Compounds - 817.1
Polymer Products - 821.4 Agricultural Products
Numerical data indexing:Age 1.00e+02yr, Percentage 1.66e+01%, Percentage 2.20e+01%,
Percentage 2.62e+01%, Size 5.00e-02m
DOI:10.13227/j.hjkx.201612243
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 69>
Accession number:20181705054069
Title:Effects of Biochar and Organic Fertilizer on Saline-alkali Soil N<inf>2</inf>O
Emission in the North China Plain
Authors:Shi, Yu-Long (1, 2); Liu, Xing-Ren (1); Gao, Pei-Ling (3); Zhang, Qing-Wen (1);
Zhang, Ai-Ping (1); Yang, Zheng-Li (1)
Author affiliation:(1) Institute of Environment and Sustainable Development in
Agriculture, Chinese Academy of Agricultural Sciences, Beijing; 100081, China; (2) School
of Agricutural Engineering and Food Science, Shandong University of Technology, Zibo;
255000, China; (3) School of Resources and Environmental Engineering, Shandong University
of Technology, Zibo; 255000, China
Corresponding author:Liu, Xing-Ren(liuxr1976@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5333-5343
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Based on the winter wheat-summer maize rotation field experiment, the effects of
biochar and organic fertilizer on saline-alkali soil N<inf>2</inf>O emissions in the
summer maize season were studied in Binzhou in the Shandong Province to provide a
theoretical basis for reducing N<inf>2</inf>O emissions from saline-alkali soil. The
experiment includes six treatments with three replications: CK [N: 0.2 t·
(hm<sup>2</sup>·a)<sup>-1</sup>, P<inf>2</inf>O<inf>5</inf>: 0.12 t·
(hm<sup>2</sup>·a)<sup>-1</sup>, K<inf>2</inf>O: 0.2 t·
(hm<sup>2</sup>·a)<sup>-1</sup>], C1 [5 t·(hm<sup>2</sup>·a)<sup>-
1</sup>biochar], C2 [10 t·(hm<sup>2</sup>·a)<sup>-1</sup>biochar], C3 [20
t·(hm<sup>2</sup>·a)<sup>-1</sup>biochar], M1 [7.5 t·
(hm<sup>2</sup>·a)<sup>-1</sup>organic fertilizer], and M2 [10 t·
(hm<sup>2</sup>·a)<sup>-1</sup>organic fertilizer]. The same nitrogen, phosphorus,
and potassium fertilizer was applied for each treatment. The results showed that the
dynamic trend of the soil N<inf>2</inf>O fluxes among different treatments were similar.
The peak N<inf>2</inf>O emissions occurred after fertilization (base fertilizer and
topdressing). The N<inf>2</inf>O cumulative emission fluxes accounted for nearly half of
the emissions during the whole growth period, and the N<inf>2</inf>O emissions of the C1,
C2, and C3 treatments were lower than that of CK after fertilization. Compared with CK,
the N<inf>2</inf>O cumulative emissions from C1 and C2 were reduced by 45.3% and 31.6%,
respectively, but C3, M1, and M2 increased by 17.3%, 37.4%, and 27.6%, respectively.
Biochar and organic fertilizer both affected N<inf>2</inf>O emission fluxes. Applying
biochar can reduce N<inf>2</inf>O emissions, while organic fertilizer can increase
N<inf>2</inf>O emissions. In summary, biochar has a great advantage in reducing
N<inf>2</inf>O emissions in the farmland.<br/> © 2017, Science Press. All right
reserved.
Number of references:47
Main heading:Nitrogen fertilizers
Controlled terms:pH - Potassium fertilizers - Soil moisture
Uncontrolled terms:Bio chars - Cumulative emissions - Different treatments - Field
experiment - North China Plain - Organic fertilizers - Saline-alkali soils - Shandong
province
Classification code:483.1 Soils and Soil Mechanics - 801.1 Chemistry, General - 804
Chemical Products Generally - 804.2 Inorganic Compounds
Numerical data indexing:Percentage 1.73e+01%, Percentage 2.76e+01%, Percentage 3.16e+01%,
Percentage 3.74e+01%, Percentage 4.53e+01%
DOI:10.13227/j.hjkx.201705035
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 70>
Accession number:20181705046700
Title:Evaluation of the Combined Removal of Heavy Metals by Saponin and Citric Acid from
Municipal Sewage Sludges and Metal Stability Features
Authors:Ye, Tao (1); Huang, Li (1); Zhang, Ke-Qiang (2); Zhang, Bin (1); Chang, Hong (1);
Liu, Zhi-Jie (1); Du, Lian-Zhu (2)
Author affiliation:(1) College of Resources and Environment, Huazhong Agricultural
University, Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of
Yangtze River), Ministry of Agriculture, Wuhan; 430070, China; (2) Key Laboratory of
Original Agro-environment Quality of Ministry of Agriculture, Tianjin Key Laboratory of
Agro-environment and Safe-product, Tianjin; 300191, China
Corresponding author:Huang, Li(daisyh@mail.hzau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4850-4859
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Sewage sludge contains a high level of nutrients, such as nitrogen, phosphorus,
potassium and organic matter, with a high recovery value. The presence of heavy metals in
sludges has become a major limiting factor in the utilization of these sludges.
Therefore, the removal of heavy metals before land application of sewage sludge has
become very necessary. Two municipal sewage sludges (S1 and S2) were collected from
municipal wastewater plants in Wuhan city and were studied by oscillation leaching
experiments with combination of saponin and citric acid to evaluate their removal
efficiencies for Cu, Pb and Zn at different volume ratios (20:1-1:20), ratios of solid to
liquid (1:20-1:80), reaction times (0-2 880 min), and leaching times (1-4). The heavy
metal fractions in the sewage sludges were analyzed before and after leaching to study
changes in the stability and mobility of heavy metals by calculating a stability factor
[relative bonding strength of heavy metals (I<inf>R</inf>)] and a mobility factor (MF).
The results show that the highest removal efficiency of Cu, Pb, and Zn was 43.16% (S1),
32.45% (S2) and 38.69% (S1), respectively under the removal conditions of a volume ratio
(saponin: citric acid) of 5:1, solid-liquid ratio of 1:60, and leaching time of 1 440
min. The removal efficiencies of Cu and Pb were significantly enhanced and Zn had a small
increase with longer leaching times, which was significantly different after two to three
washing times. The highest removal rate of Cu, Pb, and Zn was 78.89% (S1), 77.08% (S2)
and 49.39% (S1) after four washing times, respectively. Beyond acid soluble and reducible
fractions, other forms of heavy metals have very low removal rates after a single
leaching. The removal rates of heavy metal fractions increased by increasing the leaching
time, particularly for Pb, which in the residual fraction was significantly increased.
The stability and mobility of heavy metals changes after each leaching. For example, the
I<inf>R</inf>of Cu, Pb, and Zn increased to 43.63% (S1), 39.44% (S2) and 32.00% (S1),
respectively, and the MF of these heavy metals decreased from 30.19% to 79.45% in the
sewage sludges after four washing events.<br/> © 2017, Science Press. All right
reserved.
Number of references:37
Main heading:Lead removal (water treatment)
Controlled terms:Citric acid - Efficiency - Heavy metals - Leaching - Metabolites -
Sewage sludge - Stability - Washing
Uncontrolled terms:Heavy metal fractions - Leaching experiments - Mobility factors -
Municipal sewage sludge - Municipal wastewaters - Removal efficiencies - Saponin -
Stability factor
Classification code:445.1 Water Treatment Techniques - 452.2 Sewage Treatment - 531
Metallurgy and Metallography - 802.3 Chemical Operations - 804.1 Organic Compounds -
913.1 Production Engineering
Numerical data indexing:Percentage 3.02e+01% to 7.95e+01%, Time 0.00e+00s to 1.73e+05s,
Time 8.64e+04s
DOI:10.13227/j.hjkx.201702087
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 71>
Accession number:20181705054184
Title:Comparison of Characteristics and Source Apportionment of Polycyclic Aromatic
Hydrocarbons in Different Environmental Media in the Urban Area of Daqing City
Authors:Song, Ning-Ning (1, 2); Feng, Jia-Shen (1); Yu, Yang (1); Li, Ying-Xia (1)
Author affiliation:(1) State Key Laboratory of Water Environment Simulation, School of
Environment, Beijing Normal University, Beijing; 100875, China; (2) College of Resources,
Environment and Planning, Dezhou University, Dezhou; 253023, China
Corresponding author:Li, Ying-Xia(yingxia@bnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5272-5281
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In order to investigate the various pollution characteristics and sources of
polycyclic aromatic hydrocarbons (PAHs) in different environmental media, 23 street dust
samples and four soil samples were collected in October 2012 in Daqing City. After
extraction by Dionex ASE300 and purification, the content of the US EPA priority
pollutants [16 individual PAH and total PAHs (∑PAHs)] was determined by using gas
chromatography-mass spectrometry (GC/MS). The results showed that the range of ∑PAHs
content in street dust was 579.5-4 656.7 ng·g<sup>-1</sup>, and the average
content was 1 839.7 ng·g<sup>-1</sup>. The mass percentage of PAHs in the street
dust in different functional areas in Daqing showed a similar mass ratio range, with the
average mass percentage of low ring (2-3 rings) PAHs of 37.9%, medium ring (4 rings) PAHs
of 37.3%, and high ring (5-6 rings) PAHs of 24.8%. However, low ring PAHs, with mass
ratios of 69.3%-99.97%, overwhelmingly dominated the Daqing soil, Daqing lake sediment,
Daqing lakes, and Daqing ponds (data from literature). The distribution of ∑PAHs
content was not significant among different functional areas and was closely related to
the type of the plants around the sampling sites. The isomer ratio method confirmed that
the sources of PAHs in the street dust in the study area were mixed sources, including
oil spills, fuel oil combustion, and coal/biomass burning. Positive matrix factorization
(PMF) results showed that the PAHs in the street dust in the center of Daqing originated
from coal combustion, oil spill sources, industrial sources, and traffic sources, with
contribution rates of 30.1%, 26.9%, 23.6%, and 19.3%, respectively, which were not
exactly the same trend as that in other media.<br/> © 2017, Science Press. All right
reserved.
Number of references:43
Main heading:Polycyclic aromatic hydrocarbons
Controlled terms:Air pollution - Air purification - Aromatization - Coal combustion -
Coal dust - Environmental Protection Agency - Factorization - Gas chromatography -
Hydrocarbons - Lakes - Mass spectrometry - Oil spills
Uncontrolled terms:Daqing - Fuel oil combustion - Gas chromatography-mass spectrometry -
Pmf models - Polycyclic aromatic hydrocarbons (PAHS) - Positive Matrix Factorization -
Source apportionment - Street dust
Classification code:451 Air Pollution - 453.1 Water Pollution Sources - 454.2
Environmental Impact and Protection - 503 Mines and Mining, Coal - 521 Fuel Combustion
and Flame Research - 524 Solid Fuels - 643 Space Heating, Ventilation and Air
Conditioning - 801 Chemistry - 802.2 Chemical Reactions - 802.3 Chemical Operations -
804.1 Organic Compounds - 921 Mathematics
Numerical data indexing:Percentage 1.93e+01%, Percentage 2.36e+01%, Percentage 2.48e+01%,
Percentage 2.69e+01%, Percentage 3.01e+01%, Percentage 3.73e+01%, Percentage 3.79e+01%,
Percentage 6.93e+01% to 1.00e+02%
DOI:10.13227/j.hjkx.201704266
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 72>
Accession number:20181705054145
Title:Characteristics and Source Apportionment of Water-soluble Inorganic Ions in Road
Dust PM<inf>2.5</inf>in Selected Cities in Liaoning Province
Authors:Zhang, Wei (1); Ji, Ya-Qin (1); Zhang, Jun (2); Zhang, Lei (1); Wang, Wei (3);
Wang, Shi-Bao (1)
Author affiliation:(1) College of Environmental Science and Engineering, Nankai
University, Tianjin; 300350, China; (2) Panjin Environmental Monitoring Center, Panjin;
124010, China; (3) Anshan Environmental Monitoring Center, Anshan; 114004, China
Corresponding author:Ji, Ya-Qin(jiyaqin@nankai.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:4951-4957
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In order to collect comprehensive information on the characteristics and sources
of water-soluble inorganic ions in road dust (RD) PM<inf>2.5</inf>in Liaoning Province,
samples of road dust were collected in 2014 and 2016 in Anshan and Panjin and then re-
suspended on filters using an NK-ZXF sampler. The concentrations of the major water-
soluble inorganic ions were analyzed by ion chromatography. A correlation analysis,
ratios, and a principal component analysis were used to analyze the sources of RD. The
results showed that the total water-soluble inorganic ions in Panjin and Anshan accounted
for 5.83%±3.34% and 5.84%±1.15% in RD PM<inf>2.5</inf>, respectively.
NH<inf>4</inf><sup>+</sup>, SO<inf>4</inf><sup>2-</sup>, and NO<inf>3</inf><sup>-</sup>in
RD PM<inf>2.5</inf>coexisted in the forms of (NH<inf>4</inf>)<inf>2</inf>SO<inf>4</inf>,
and NH<inf>4</inf>NO<inf>3</inf>in Panjin, and NH<inf>4</inf>HSO<inf>4</inf>and
NH<inf>4</inf>NO<inf>3</inf>in Anshan. The average values of NO<inf>3</inf><sup>-
</sup>/SO<inf>4</inf><sup>2-</sup>were 0.52±0.55 and 0.46±0.13 for Panjin
and Anshan, respectively, indicating that the effects of stationary sources (e.g., coal
combustion) on PM<inf>2.5</inf>were more significant. The main sources of RD
PM<inf>2.5</inf>in Panjin were biomass burning, sea salt particles, construction dust,
and mobile sources, while the main sources of RD PM<inf>2.5</inf>in Anshan were coal
combustion, biomass burning, sea salt particles, and steel smelting dust.<br/> ©
2017, Science Press. All right reserved.
Number of references:21
Main heading:Coal combustion
Controlled terms:Coal dust - Ion chromatography - Ions - Nitrogen compounds - Principal
component analysis - Roads and streets
Uncontrolled terms:Liaoning Province - PM2.5 - Road dusts - Source apportionment - Water
soluble inorganic ions
Classification code:406.2 Roads and Streets - 503 Mines and Mining, Coal - 521 Fuel
Combustion and Flame Research - 524 Solid Fuels - 801 Chemistry - 922.2 Mathematical
Statistics
DOI:10.13227/j.hjkx.201704182
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 73>
Accession number:20181705054140
Title:Effect of Atmospheric Haze Based on Multi-source Remote Sensing Data Considering
the Size Effect of Landscape Sources and Sinks
Authors:Xu, Kai (1); Yu, Tian-Tian (1); Sun, Jiao-Jiao (2); Yuan, Zhao-Xiang (3); Qin,
Kun (4)
Author affiliation:(1) Faculty of Information Engineering, China University of
Geosciences (Wuhan), Wuhan; 430070, China; (2) Faculty of Earth Science, Chengdu
University of Technology, Chengdu; 610059, China; (3) China State Power Economic Research
Institute, Beijing; 100010, China; (4) Shool of Remote Sensing and Information
Engineering, Wuhan University, Wuhan; 430079, China
Corresponding author:Yu, Tian-Tian(m13618650845_1@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:4905-4912
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Based on a geo-weighted regression model, this study analyzes the relationship
between the landscape patterns of sources and sinks in urban areas and atmospheric haze
pollution. First, the classification result of the study area is divided into a number of
square grids with side lengths of 2-9 km. Heterogeneity indices at different scales are
calculated and compared to select an optimal scale for the following analysis. Then, the
category level landscape indices, such as PLAND, PD, COHEDION, LPI, and FRAC_MN, are
calculated in each grid. The aerosol optical thickness (AOD) of Wuhan is used to
represent the degree of atmospheric haze pollution. Furthermore, the mean value of the
pixels in each grid is regarded as the value of the grid's center. Next, the landscape
sources and sinks of atmospheric haze pollution are selected based on the analysis of the
correlation between landscape indices and AOD. To make the following analysis more
efficient, the indices selected previously are determined using their correlation
coefficients. Finally, the geo-weighted regression analysis model is used to analyze the
relationship between the landscape indices of the category level and AOD. In addition,
the influences of industrial, commercial, and residential areas on haze pollution are
analyzed based on the result of the classification of urban functional areas. The results
show that the heterogeneity of the whole landscape is most obvious at a 6 km scale, so 6
km is the optimal scale for the analysis. The landscape sources of atmospheric haze
pollution are the buildings, and the landscape sinks are shrubs and woodland. Reducing
the proportion of landscape source area and increasing the degree of fragmentation can
cut down aerosol optical thickness. Distributing the landscape sources and sinks evenly
and interspersedly could effectively reduce aerosol optical thickness, which represents
atmospheric haze pollution. For Wuhan City, the main sources of haze pollution are
commercial and residential areas in the city center, representing public sources. Since
it is not easy to adjust existing facilities and infrastructure, adjusting built-up areas
slightly and planning reasonably for those areas that are not yet built up can reduce
atmospheric haze pollution.<br/> © 2017, Science Press. All right reserved.
Number of references:19
Main heading:Atmospheric chemistry
Controlled terms:Aerosols - Air pollution - Housing - Optical properties - Regression
analysis - Remote sensing - Scales (weighing instruments) - Urban planning
Uncontrolled terms:Aerosol optical thickness - Haze - Landscape sources and sinks - Scale
effects - Weighted regression
Classification code:403.1 Urban Planning and Development - 443.1 Atmospheric Properties
- 451 Air Pollution - 741.1 Light/Optics - 922.2 Mathematical Statistics - 943.3
Special Purpose Instruments
Numerical data indexing:Size 2.00e+03m to 9.00e+03m, Size 6.00e+03m
DOI:10.13227/j.hjkx.201702032
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 74>
Accession number:20181705054181
Title:Distribution of Phosphorus in Soil Profiles after Continuous Application of
Different Fertilizers
Authors:Zhang, Tian (1); Xu, Hao (1); Ru, Shu-Hua (2); Su, De-Chun (1)
Author affiliation:(1) Beijing Key Laboratory of Farmland Pollution Prevention-control
and Remediation, College of Resource and Environment Science, China Agricultural
University, Beijing; 100193, China; (2) Institute of Agro-resource and Environment, Hebei
Academy of Agriculture and Forestry Sciences, Shijiazhuang; 050051, China
Corresponding author:Su, De-Chun(dcsu@cau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5247-5255
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:This study clarifies the distribution and migration characteristics of
phosphorus in the soil profile and discusses the phosphorus load of farmland after
continuous application of different organic fertilizers. The distribution and migration
characteristics of phosphorus in soil profiles were studied through a field experiment
lasting four consecutive years. The results showed that total phosphorus and Olsen-P are
mainly accumulated in the soil surface, and their contents decrease with the deepening of
soil depth after the continuous application of different fertilizers. With a four-year
application of higher levels of organic fertilizer, the total phosphorus was found to
migrate into the 15-30 cm soil layer. Olsen-P was found to migrate into the 60-90 cm soil
layer under higher levels of pig manure. The ratio of available phosphorus to total
phosphorus in the soil surface increased, and there were significant differences after
the application of different amounts of organic fertilizers. The amount of Olsen-P as a
proportion of total phosphorus in the soil profile decreased as pig manure
treatment>chicken manure treatment>sludge treatment>phosphate fertilizer
treatment. After the application of chicken manure, pig manure, sludge, and phosphate
fertilizer, the value of Olsen-P in the soil surface increased with an increase in
phosphorus input and then remained stable. When applying the same phosphorus onto the
soil, the contribution of different organic fertilizers to Olsen-P in the surface soil
was quite different. The bioavailability and mobility of phosphorus from pig manure was
significantly higher than that of chicken manure, sludge, and phosphate fertilizer.<br/>
© 2017, Science Press. All right reserved.
Number of references:37
Main heading:Soil surveys
Controlled terms:Animals - Biochemistry - Manures - Phosphate fertilizers - Phosphorus -
Soils
Uncontrolled terms:Accumulation - Available phosphorus - Field experiment - Organic
fertilizers - Phosphorus inputs - Sludge treatment - Soil profiles - Transfer
Classification code:483.1 Soils and Soil Mechanics - 801.2 Biochemistry - 804 Chemical
Products Generally - 804.2 Inorganic Compounds - 821.2 Agricultural Chemicals - 821.5
Agricultural Wastes
Numerical data indexing:Size 1.50e-01m to 3.00e-01m, Size 6.00e-01m to 9.00e-01m
DOI:10.13227/j.hjkx.201705027
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 75>
Accession number:20181705054068
Title:Control Effect of Side Deep Fertilization with Slow-release Fertilizer on Ammonia
Volatilization from Paddy Fields
Authors:Hou, Peng-Fu (1); Xue, Li-Xiang (1); Yu, Ying-Liang (1); Xue, Li-Hong (1); Fan,
Li-Hui (1, 2); Yang, Lin-Zhang (1)
Author affiliation:(1) Institute of Agricultural Resources and Environment, Jiangsu
Academy of Agricultural Sciences, Nanjing; 210014, China; (2) College of Agronomy,
Nanjing Agricultural University, Nanjing; 210095, China
Corresponding author:Xue, Li-Hong(njxuelihong@gmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5326-5332
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In order to reduce the ammonia volatilization in paddy fields, seven treatments
were evaluated. These included three slow-release nitrogen fertilizers [sulfur-coated
urea (SCU); resin-coated urea (RCU); release bulk blending fertilizer (RBB)], two
fertilization modes [single base fertilization (B) and combined with panicle fertilizer
(BF)], and conventional split fertilization (CN). The effects of side deep fertilization
for slow-release nitrogen fertilizers on ammonia volatilization and surface water
nitrogen dynamics were examined using a rice transplanter with a fertilizer sowing
mechanism in the Taihu Lake region. The results showed that total nitrogen and ammonium
nitrogen concentration in the surface water of the SCU treatment in the base period were
higher, and those for RCU and RBB were lower than in the CN treatment. The cumulative
ammonia volatilization during the whole rice season varied among different types of
slow-release nitrogen fertilizers from 3.84% to 28.17% of the total N applied. The
nitrogen loss from ammonia volatilization using the three slow-release nitrogen
fertilizers was decreased when compared with conventional split fertilization. The
ammonia volatilization loss exhibited the following relationship for the treatments: CN,
B-SCU>BF-SCU, BF-RBB, BF-RCU, B-RBB, and B-RCU. When the slow-release nitrogen
fertilizers were applied in single base fertilization, the total ammonia volatilization
for the SCU was significantly higher than those for the RCU and RBB, while no significant
differences were detected when these three slow-release fertilizers were combined with
panicle fertilizer. Moreover, although the ammonia volatilization of BF-SCU was lower
than that of B-SCU, those of BF-RCU and BF-RBB were higher than those with the B-RCU and
B-RBB treatments, respectively. There are no significant differences for nitrogen
volatilization when any of these three different fertilizers are applied as B or BF. The
results for the emissions during ammonia volatilization during different stages indicated
that the ammonia volatilization of SCU at the basal-tillering fertilization stage (7.54%)
and the tillering-panicle fertilization stage (16.04%) were higher than those of the
panicle fertilization-mature stage. The N loss from ammonia volatilization for RBB in the
base-tillering fertilization stage (2.91%) increased more than in the tillering-panicle
fertilization stage and panicle fertilization-mature stage. For RCU treatment, the
highest rate for ammonia volatilization was detected at the panicle fertilization-mature
stage (2.75%). Compared with the single base fertilization mode, ammonia volatilization
during the panicle fertilization-mature stage was increased when combined with panicle
fertilizer (BF) for the slow-release fertilizer. There was no obvious correlation between
the N loss with ammonia volatilization for the three slow-release nitrogen fertilizers
and the concentration of ammonium nitrogen in surface water during the panicle
fertilization-mature stage.<br/> © 2017, Science Press. All right reserved.
Number of references:27
Main heading:Urea fertilizers
Controlled terms:Ammonia - Blending - Metabolism - Surface waters - Urea - Water
treatment
Uncontrolled terms:Ammonia volatilization - Paddy fields - Paddy waters - Side deep
fertilization - Slow release fertilizers
Classification code:444.1 Surface Water - 445.1 Water Treatment Techniques - 802.3
Chemical Operations - 804.1 Organic Compounds - 804.2 Inorganic Compounds
Numerical data indexing:Percentage 1.60e+01%, Percentage 2.75e+00%, Percentage 2.91e+00%,
Percentage 3.84e+00% to 2.82e+01%, Percentage 7.54e+00%
DOI:10.13227/j.hjkx.201705030
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 76>
Accession number:20181705054169
Title:Realization of Shortcut Nitrification in the ABR-MBR Process Treating Domestic
Wastewater
Authors:Lü, Liang (1, 2); Zhao, Shi-Hui (1, 2); Wei, Jia-Min (1, 2); Zhang, Min (1,
2); You, Wen (1, 2); Wu, Peng (1, 2, 3); Shen, Yao-Liang (1, 2, 3)
Author affiliation:(1) School of Environmental Science and Engineering, Suzhou University
of Science and Technology, Suzhou; 215009, China; (2) Jiangsu Collaborative Innovation
Center of Water Treatment Technology and Material, Suzhou; 215009, China; (3) Key
Laboratory of Environmental Science and Engineering of Jiangsu Province, Suzhou; 215009,
China
Corresponding author:Shen, Yao-Liang(ylshen@mail.usts.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5154-5161
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The operational control conditions for realizing shortcut nitrification in the
membrane bioreactor (MBR) process was investigated in a lab-scale anaerobic baffled
reactor (ABR)-MBR combined system, which laid the foundation for further research on the
performance of denitrification phosphorus removal in the system. The experimental results
under different conditions showed that shortcut nitrification in the MBR was achieved by
controlling the dissolved oxygen (DO) concentration to low levels (0.5-1.0
mg·L<sup>-1</sup>to 0.3-0.7 mg·L<sup>-1</sup>) and changing the effective
volume of the MBR to control hydraulic retention time (HRT), with the HRT in the ABR
equal to 6 h, sludge reflux ratio of 100%, NO<inf>x</inf><sup>-</sup>-N reflux ratio of
300%, and temperature of 30℃±2℃. Finally, the shortcut nitrification
deteriorated as the HRT in the MBR increased from 3 h to 5 h, with nitrite accumulation
rate dramatically dropping from 60% to 15%. The analysis of the influencing factors of
shortcut nitrification showed that maintaining low DO concentration (0.3-0.7
mg·L<sup>-1</sup>) and gradually shortening HRT were the key factors. The pH, free
ammonia (FA), free nitrous acid (FNA), temperature, and sludge retention time (SRT) had a
slightly positive effect on shortcut nitrification. During the period of shortcut
nitrification, a stable and high efficiency removal of COD and NH<inf>4</inf><sup>
+</sup>-N were achieved, and the average concentration of the effluent of COD and
NH<inf>4</inf><sup>+</sup>-N, whose removal rates were above 90%, were below 50
mg·L<sup>-1</sup>and 2 mg·L<sup>-1</sup>, respectively, and the removal
efficiency of total nitrogen (TN) reached 72%.<br/> © 2017, Science Press. All right
reserved.
Number of references:29
Main heading:Nitrification
Controlled terms:Bioreactors - Dissolved oxygen - Efficiency - Effluents - Nitration -
Nitrogen oxides - Nitrogen removal - Wastewater treatment
Uncontrolled terms:Anaerobic baffled reactor - Dissolved oxygen concentrations - Free
nitrous acid (FNA) - Hydraulic retention time - Membrane bio reactor (MBR) - Nitrite
accumulation - NOx^--N reflux - Shortcut nitrification
Classification code:452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and
Disposal - 802.1 Chemical Plants and Equipment - 802.2 Chemical Reactions - 804.2
Inorganic Compounds - 913.1 Production Engineering
Numerical data indexing:Mass_Density 2.00e-03kg/m3, Mass_Density 3.00e-04kg/m3 to 7.00e-
04kg/m3, Mass_Density 5.00e-02kg/m3, Mass_Density 5.00e-04kg/m3 to 1.00e-03kg/m3,
Percentage 1.00e+02%, Percentage 3.00e+02%, Percentage 6.00e+01% to 1.50e+01%, Percentage
7.20e+01%, Percentage 9.00e+01%, Time 1.08e+04s to 1.80e+04s, Time 2.16e+04s
DOI:10.13227/j.hjkx.201706153
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 77>
Accession number:20181705054070
Title:Flux Characteristics of CO<inf>2</inf>, CH<inf>4</inf>, and N<inf>2</inf>O and
their Influencing Factors in Different Types of Ditches on the Chengdu Plain
Authors:Feng, Xiang-Rong (1); Deng, Ou-Ping (1); Deng, Liang-Ji (1); Wu, Ming (1, 2);
Yao, Kun (1); Yang, Ze-Peng (1)
Author affiliation:(1) College of Resources, Sichuan Agricultural University, Chengdu;
610030, China; (2) Soil and Fertilizer Research Institute, Sichuan Academy of
Agricultural Sciences, Chengdu; 610066, China
Corresponding author:Deng, Liang-Ji(auh6@sicau.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5344-5351
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In order to study the flux characteristics of CH<inf>4</inf>, CO<inf>2</inf>and
N<inf>2</inf>O in different ditches and their influencing factors, three types of ditches
(an agricultural ditch, agricultural-living compound ditch, and living ditch) were
monitored once a month from March 2014 to February 2015 using static floating chambers in
the Chengdu Plain. The results showed that: ①Affected by human activities,
CO<inf>2</inf>, CH<inf>4</inf>, and N<inf>2</inf>O fluxes were high in ditches and ranged
from -2.26-1 504.40 mg·(m<sup>2</sup>·h)<sup>-1</sup>, 0.69-40.00
mg·(m<sup>2</sup>·h)<sup>-1</sup>, and -2.27-70.35 μg·
(m<sup>2</sup>·h)<sup>-1</sup>, respectively. All are higher in summer compared to
autumn and spring, and are lowest in winter. ②The flux of CO<inf>2</inf>in
agricultural-living compound ditches was significantly higher than that in agricultural
ditches and living ditches (P<0.05), and the fluxes of CH<inf>4</inf>and
N<inf>2</inf>O in living ditches were significantly higher than those in agricultural
ditches and agricultural-living compound ditches (P<0.05). ③ Water temperature
and rainfall were the main environmental factors affecting CO<inf>2</inf>,
CH<inf>4,</inf>and N<inf>2</inf>O fluxes, and DO (dissolved oxygen) and TN (total
nitrogen) were the main environmental factors affecting CO<inf>2</inf>and N<inf>2</inf>O
fluxes. NH<inf>4</inf><sup>+</sup>-N (ammonium nitrogen) and DO were the main water
quality parameters affecting the CH<inf>4</inf>flux.<br/> © 2017, Science Press. All
right reserved.
Number of references:40
Main heading:Carbon dioxide
Controlled terms:Agriculture - Biochemical oxygen demand - Dissolved oxygen - Nitrogen -
Phase interfaces - Water quality
Uncontrolled terms:Chengdu - Different types of ditches - Influencing factors - Static
floating chamber - Water-air interface
Classification code:445.2 Water Analysis - 801.4 Physical Chemistry - 804 Chemical
Products Generally - 804.2 Inorganic Compounds - 821 Agricultural Equipment and
Methods; Vegetation and Pest Control
DOI:10.13227/j.hjkx.201705018
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 78>
Accession number:20181705054172
Title:Water Quality and Diversity of Denitrifier Community Structure of Typical Scenic
Water Bodies in Xi'an
Authors:Kang, Peng-Liang (1); Huang, Ting-Lin (1); Zhang, Hai-Han (1); Chen, Sheng-Nan
(1); Shang, Pan-Lu (1); Feng, Ji (1); Jia, Jing-Yu (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China
Corresponding author:Huang, Ting-Lin(huangtinglin@xauat.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5174-5183
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Six micro-polluted landscape water bodies were selected to explore the
relationship between water quality and the nirS-Type denitrifier community structure and
diversity with an Illumina high-throughput sequencing technique. The results of a
physico-chemical analysis of the water bodies showed that the Fengqing Park (FQ) and
Laodong Park (LD) water bodies were classified as inferior V water quality, the Qujiang
Park (QJ), Mutasi Park (MTS), and Xinjiyuan Park (XJY) water bodies were classified as V
water quality, and the Yongyang Park (YY) water quality was classified as IV. The TN
values varied from 1.21 mg·L<sup>-1</sup>to 6.50 mg·L<sup>-1</sup>, with
the lowest value found in YY and the highest in FQ (P<0.05). TP was significantly
higher in LD (0.10 mg·L<sup>-1</sup>) and significantly lower in QJ [0.02
mg·L<sup>-1</sup>(P<0.05)]. The NH<inf>4</inf><sup>+</sup>-N in LD was 4.44
times higher than that in QJ and FQ (P<0.01). Illumina high-throughput sequencing
revealed that the denitrifier community composition was significantly different among the
six water bodies, and Paracoccus sp., Pseudomonas sp., and Rubrivivax sp. were the
dominant genus species. A principle component analysis (PCA) indicated that the nirS-Type
denitrifier communities of XJY and MTS were mainly regulated by NH<inf>4</inf><sup>
+</sup>-N and the permanganate index, LD and FQ were significantly influenced by
NO<inf>3</inf><sup>-</sup>-N, NO<inf>2</inf><sup>-</sup>-N, TN, TP, and DO, and YY was
significantly influenced by pH value. Our results showed that nirS-Type denitrifier
communities were regulated by different water quality indicators.<br/> © 2017,
Science Press. All right reserved.
Number of references:52
Main heading:Quality control
Controlled terms:Chemical analysis - Denitrification - Principal component analysis -
Throughput - Water quality
Uncontrolled terms:Community composition - Denitrifiers - High throughput - High-
throughput sequencing - Landscape water bodies - Physico-chemical analysis - Principle
component analysis - Water quality indicators
Classification code:445.2 Water Analysis - 802.2 Chemical Reactions - 913.3 Quality
Assurance and Control - 922.2 Mathematical Statistics
Numerical data indexing:Mass_Density 1.00e-04kg/m3, Mass_Density 1.21e-03kg/m3 to 6.50e-
03kg/m3
DOI:10.13227/j.hjkx.201703179
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 79>
Accession number:20181705046557
Title:Effect of the Food to Mass Ratio and Hydraulic Retention Time on Hydrogen
Production from Fruit and Vegetable Waste
Authors:Li, Biao (1, 2); Kong, Xiao-Ying (1); Li, Lian-Hua (1); Li, Ying (1); Yuan,
Zhen-Hong (1); Sun, Yong-Ming (1); Lü, Peng-Mei (1)
Author affiliation:(1) Guangdong Key Laboratory of New and Renewable Energy Research and
Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences,
Guangzhou; 510640, China; (2) Nano Science and Technology Institute, University of
Science and Technology of China, Suzhou; 215123, China
Corresponding author:Sun, Yong-Ming(sunym@ms.giec.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4882-4888
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Semi-continuous biogas production from fruit and vegetable waste by medium
temperature anaerobic fermentation was conducted. Hydrogen production under different
food-microorganism ratios (F/M 0.5, 0.75, 1.0, 1.5) and hydraulic retention times (HRT)
(2, 3, 4 d) were investigated. The results show that in the case of a smaller F/M values
(0.5 and 0.75), not all HRT stages were conducive to the continuous production of
hydrogen, however, they were conducive to producing methane, especially when HRT was 3 or
4 d. Continuous hydrogen production was viable when the F/M ration was relatively higher
(1.0 and 1.5), however, this was not conducive to the production of methane, with almost
no methane production detected in this process. A F/M of 1.0 and a HRT of 3 d provided
the best conditions for continuous hydrogen production from fruit and vegetable waste.
Meanwhile, the highest and average daily volume of hydrogen production were 451.2
mL·(L·d)<sup>-1</sup>and (186±29) mL·(L·d)<sup>-
1</sup>respectively, whereas the highest and average hydrogen production rate of volatile
solids were 133 mL·g<sup>-1</sup>and (27±5) mL·g<sup>-
1</sup>respectively. The hydrogen content was 20%-30%.<br/> © 2017, Science Press.
All right reserved.
Number of references:16
Main heading:Hydrogen production
Controlled terms:Food microbiology - Fruits - Hydrogen - Methane - Microorganisms -
Vegetables
Uncontrolled terms:Anaerobic fermentation - Continuous hydrogen production - Continuous
production - Food microorganisms - Fruit and vegetable waste - Hydraulic retention time -
Hydrogen production rate - Medium temperature
Classification code:461.9 Biology - 461.9.2 Microbiology - 522 Gas Fuels - 804
Chemical Products Generally - 804.1 Organic Compounds - 821.4 Agricultural Products
Numerical data indexing:Percentage 2.00e+01% to 3.00e+01%, Specific_Volume 1.33e-01m3/kg
DOI:10.13227/j.hjkx.201702091
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 80>
Accession number:20181705046662
Title:Characteristics and Risks of Heavy Metals Content in Surface Sediment of Tidal Flat
Areas in Eastern China
Authors:Zhang, Ming (1, 2); Bao, Zhen-Yu (1); Chen, Guo-Guang (2); Yong, Tai-Jian (2);
Zhu, Yi-Ping (2); Liang, Xiao-Hong (2)
Author affiliation:(1) School of Earth Sciences, China University of Geosciences, Wuhan;
430074, China; (2) Nanjing Center, China Geological Survey, Nanjing; 210016, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4513-4524
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:To understand the heavy metals content such as As, Cd, Cr, Cu, Hg, Pb, and Zn,
as well as their distribution features in surface sediments of tidal flat areas of
Eastern China, mathematical statistics, correlation analysis, factor analysis and other
statistical methods are used. This study collected 1906 surface sediment samples of As,
Cd, Cr, Cu, Hg, Pb, Zn were collected as part of a systematic research effort. These
results show that the coastal tidal flats zone of Eastern China contains surface sediment
samples with heavy metal concentrations (As, Cd, Cr, Cu, Hg, Pb, and Zn) with is not high
but has increased due to anthropogenic sources. The total content of heavy metals in
Jiangsu province is low, however, in Shanghai and Zhejiang provinces relatively high
heavy metal contents are present. In addition to natural causes, the heavy metal content
in coastal sediment in Shanghai and Zhejiang is significantly affected by human
activities, while Jiangsu coastal surface sediments has light impacts from human
activities. Heavy metal contamination in coastal areas Shanghai, Zhejiang, and Fujian
provinces is particularly serious including Hg, Cd, and Cu contamination. The results of
an evaluation using the Marine Pollution Sediment Index and Mean Sediment Quality
Guidelines show that in Eastern China, the overall sediment pollutant ecological risk is
low for Jiangsu and Fujian provinces, however, the ecological risk for the tidal flats of
Shanghai and Zhejiang provincial beaches is relatively high due to heavy metal
concentrations.<br/> © 2017, Science Press. All right reserved.
Number of references:38
Main heading:Metal analysis
Controlled terms:Coastal zones - Factor analysis - Heavy metals - Marine pollution -
Multivariant analysis - Quality control - Risk assessment - Statistics - Surficial
sediments - Tides - Wetlands
Uncontrolled terms:Anthropogenic sources - Coastal area - Distribution features -
Ecological risks - Heavy metal concentration - Heavy metal contamination - Sediment
quality guidelines - Tidal flat
Classification code:453 Water Pollution - 471 Marine Science and Oceanography - 471.4
Seawater, Tides and Waves - 483 Soil Mechanics and Foundations - 531 Metallurgy and
Metallography - 913.3 Quality Assurance and Control - 914.1 Accidents and Accident
Prevention - 922 Statistical Methods - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201701199
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 81>
Accession number:20181705054182
Title:Occurrence of Organophosphate Esters in Soils of the Three Gorges Reservoir
Authors:He, Ming-Jing (1, 2); Yang, Ting (1); Yang, Zhi-Hao (1); Wei, Shi-Qiang (1, 2)
Author affiliation:(1) College of Resources and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400716, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5256-5261
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Organophosphate esters (OPEs) were first identified and quantified in farmland
and riparian soil in the Three Gorges Reservoir (TGR) of western China. The mean
concentrations of OPEs were 272 ng·g<sup>-1</sup>dry weight (dw) in farmland soil
and 498 ng·g<sup>-1</sup>dw in riparian soil. These values lie at the middle of
the range of worldwide values. Hydrodynamic conditions might be important factors
contributing to the slightly different spatial distribution of the OPEs. The
concentrations of the OPEs in riparian soil exceed those in farmland soil, which could
partly be ascribed to the operation of the Three Gorges Dam (TGD). Of particular note is
the elevated contribution of TCP, followed by EHDPP, accounting for more than 90% of the
total OPEs, and the degradation of TBEP by microorganisms in the soil could be related to
the low occurrence of TBEP. Significant correlation between the OPE concentrations in
farmland and riparian soil were obtained, indicating that the OPEs in farmland and
riparian soil originated from the same source. A principal component analysis (PCA)
showed that the OPEs in farmland soil might come largely from construction and decoration
materials, and the OPEs in riparian soil may be derived from a combination of
construction materials and vehicular traffic emissions.<br/> © 2017, Science Press.
All right reserved.
Number of references:26
Main heading:Soil pollution
Controlled terms:Biodegradation - Esters - Farms - Principal component analysis - Soils
Uncontrolled terms:Farmland soils - Hydrodynamic conditions - Mean concentrations -
Occurrences - Organophosphate esters - Three Gorges Dam - Three gorges reservoir -
Western China
Classification code:461.8 Biotechnology - 483.1 Soils and Soil Mechanics - 804.1
Organic Compounds - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
- 922.2 Mathematical Statistics
Numerical data indexing:Percentage 9.00e+01%
DOI:10.13227/j.hjkx.201705057
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 82>
Accession number:20181705054142
Title:Exposure Level of Population and Economy in Zhejiang Province Considering the
Background of PM<inf>2.5</inf>in East China
Authors:Yu, Zhen-Yan (1); Gao, Da-Wei (1); Li, Zheng-Quan (1); Yang, Xu-Chao (2); Wang,
Kuo (1); Ma, Hao (1); Xu, Hong-Hui (3)
Author affiliation:(1) Zhejiang Climate Center, Hangzhou; 310017, China; (2) Ocean
College, Zhejiang University, Zhoushan; 316021, China; (3) Zhejiang Meteorological
Science Instituter, Hangzhou; 310008, China
Corresponding author:Gao, Da-Wei(davidgao82@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:4924-4931
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Using the satellite-derived Fine Particulate Matter (PM<inf>2.5</inf>) data of
global high-precision products during 1998-2012, detailed characteristics of
PM<inf>2.5</inf>distribution over East China and its change are given, and the
PM<inf>2.5</inf>exposure levels for population and economy in Zhejiang is further
analyzed in this context. The results show that the overall variability of the regional
average value of PM<inf>2.5</inf>concentration exhibits an increasing trend followed by a
decrease during 1998-2012, which is consistent in both the East China and Zhejiang
provinces; the turning point occurs around 2007-2009. In the initial years (1998-2000),
annual average PM<inf>2.5</inf>concentrations are below 50 μg·m<sup>-3</sup>in
the southern part of East China and eastern part of Shandong, while it is 50-75
μg·m<sup>-3</sup>in other areas. During this period, 51.8% of the area in East
China and 21.1% of the area in Zhejiang have PM<inf>2.5</inf>concentrations larger than
35 μg·m<sup>-3</sup>(Air quality standard value in China). The rising trend in
PM<inf>2.5</inf>concentration is extremely obvious in 1998-2009; the mean linear trend
over East China is 2.58 μg·(m<sup>3</sup>·a)<sup>-1</sup>, while it is
1.43 μg·(m<sup>3</sup>·a)<sup>-1</sup>over Zhejiang province.
PM<inf>2.5</inf>concentration reaches its maximum during 2007-2009. The area where
PM<inf>2.5</inf>concentration is larger than 35 μg·m<sup>-3</sup>reaches 82.1%
in East China and 65.9% in Zhejiang province. After that, the
PM<inf>2.5</inf>concentration begins to decrease in each region, and the average change
trend in East China and Zhejiang are -1.75 μg·(m<sup>3</sup>·a)<sup>-
1</sup>and -1.58 μg·(m<sup>3</sup>·a)<sup>-1</sup>, respectively. The
regional area in which PM<inf>2.5</inf>concentrations aregreater than 35
μg·m<sup>-3</sup>displays a slight decline during 2010-2012, which suggests
that the energy conservation and emission reduction plan proposed by the Chinese
government and associated measures may play a vital role in improving air quality of East
China. In 2010, the proportion of the population and GDP for which the
PM<inf>2.5</inf>exposure level exceeded 35 μg·m<sup>-3</sup>were 74.0% and
70.8%, respectively, of which 38.1% of the population lives in an environment where
annual average PM<inf>2.5</inf>concentrations are more than 50 μg·m<sup>-
3</sup>. In addition, 38.9% of the GDP is produced in an environment with annual average
PM<inf>2.5</inf>concentrations more than 50 μg·m<sup>-3</sup>.<br/> ©
2017, Science Press. All right reserved.
Number of references:35
Main heading:Particles (particulate matter)
Controlled terms:Air quality - Emission control - Population statistics - Remote sensing
Uncontrolled terms:Economy - Exposure level - PM2.5 - Population - Satellite remote
sensing - Trend
Classification code:451.2 Air Pollution Control - 951 Materials Science
Numerical data indexing:Percentage 2.11e+01%, Percentage 3.81e+01%, Percentage 3.89e+01%,
Percentage 5.18e+01%, Percentage 6.59e+01%, Percentage 7.08e+01%, Percentage 7.40e+01%,
Percentage 8.21e+01%
DOI:10.13227/j.hjkx.201705039
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 83>
Accession number:20181705046655
Title:Spatial Simulation of Black Carbon Concentrations Based on a Land Use Regression
Model and Mobile Monitoring over Shanghai, China
Authors:Peng, Xia (1, 3); She, Qian-Nan (2, 3); Long, Ling-Bo (2, 3); Liu, Min (2, 3);
Xu, Qian (2); Wei, Ning (2, 3); Zhou, Tao-Ye (4)
Author affiliation:(1) School of Geography Sciences, East China Normal University,
Shanghai; 200241, China; (2) School of Ecological and Environmental Sciences, East China
Normal University, Shanghai; 200241, China; (3) Shanghai Key Laboratory for Urban
Ecological Processes and Eco-Restoration, East China Normal University, Shanghai; 200241,
China; (4) Pudong New Area Environmental Monitoring Station, Shanghai; 200135, China
Corresponding author:Liu, Min(mliu@re.ecnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4454-4462
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Black carbon (BC) is an important component of atmospheric pollution and has
significant impacts on air quality and human health. Choosing Shanghai city for a case
study, this paper explores the statistical characteristics and spatial patterns of BC
concentrations using a mobile monitoring method, which differs from traditional fixed-
site observations. Land use regression (LUR) modeling was conducted to examine the
determinants for on-road BC concentrations, e.g. population, economic development,
traffic, etc. These results showed that the average on-road BC concentrations were
(9.86±8.68) μg·m<sup>-3</sup>, with a significant spatial variation. BC
concentrations in suburban areas [(10.47±2.04) μg·m<sup>-3</sup>] were
32.03% (2.54 μg·m<sup>-3</sup>) higher than those in the city center
[(7.93±2.79) μg·m<sup>-3</sup>]. Besides, meteorological factors (e.g.
wind speed and relative humidity) and traffic variables (e.g. the length of roads,
distance to provincial roads, distance to highway) had significant effects on on-road BC
concentrations (r: 0.5-0.7, P<0.01). Moreover, the LUR model, including meteorological
and traffic variables performed well (adjusted R<sup>2</sup>: 0.62-0.75, cross validation
R<sup>2</sup>: 0.54-0.69, RMSE: 0.15-0.20 μg·m<sup>-3</sup>), which
demonstrates that on-road BC concentrations in Shanghai are mainly affected by these
factors and traffic sources to some extent. Among them, the most accurate LUR model was
developed with a 100 m buffer, followed by the LUR model with a 5 km buffer. This study
is of great significance for the identification of spatial distribution patterns for on-
road BC concentration and exploring their influencing factors in Shanghai, which can
provide a scientific basis and theoretical support for simulating and predicting the
response mechanisms of BC on human health and the natural environment.<br/> © 2017,
Science Press. All right reserved.
Number of references:32
Main heading:Land use
Controlled terms:Air quality - Atmospheric humidity - Carbon - Economics - Regression
analysis - Roads and streets - Wind
Uncontrolled terms:Black carbon - Land-use regression models - Mobile monitoring -
Shanghai - Spatial variations
Classification code:403 Urban and Regional Planning and Development - 406.2 Roads and
Streets - 443.1 Atmospheric Properties - 451.2 Air Pollution Control - 804 Chemical
Products Generally - 922.2 Mathematical Statistics - 971 Social Sciences
Numerical data indexing:Size 1.00e+02m, Size 5.00e+03m
DOI:10.13227/j.hjkx.201705026
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 84>
Accession number:20181705054160
Title:Characteristics of Carbon and Nitrogen in the Downstream Columnar Sediment of
Maozhou River, Shenzhen
Authors:Ling, Jun-Hong (1, 2); Zhang, Yi-Zhang (2); Wang, Min-Hao (3); Zhou, Bei-Hai (1);
Tao, Ming (3); Chen, Hui-Ming (3); Yan, Zhen-Guang (2)
Author affiliation:(1) School of Energy and Environmental Engineering, University of
Science and Technology Beijing, Beijing; 100083, China; (2) Chinese Research Academy of
Environmental Sciences, Beijing; 100012, China; (3) Power China Water Environment
Governance, Shenzhen; 518100, China
Corresponding author:Zhou, Bei-Hai(zhoubeihai@sina.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5081-5089
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Based on the determinations of total nitrogen (TN), organic matter (OM),
carbon-nitrogen ratio (C/N), δ<sup>15</sup>N, and δ<sup>13</sup>C on 12
sediment cores, the distribution characteristics and the sources of nitrogen and organic
matter were analyzed in sediments from the lower reaches and main tributaries of the
Maozhou River. The results showed that the average concentrations of total nitrogen (TN)
and organic matter (OM) were 1 815.37 mg·kg<sup>-1</sup>and 22 401.68
mg·kg<sup>-1</sup>, respectively, in the Maozhou River sediments, which were
higher than in TaihuLake and ChaohuLake. The levels of TN and OM in the study area were
high and varied greatly with the increase of depth. The δ<sup>15</sup>N content in
the sediments of the MaozhouRiver downstream ranged from 2.20 ‰ to 32.78 ‰,
while the δ<sup>13</sup>C content ranged from -27.53 ‰ to -21.95 ‰.
The average concentrations of δ<sup>15</sup>N and δ<sup>13</sup>C were 6.78
‰ and -25.41 ‰. Moreover, the C/N ratio ranged from 0.49 to -18.23. The
δ<sup>13</sup>C varied slightly with the increase of depth, while
δ<sup>15</sup>N and C/N varied greatly. A source analysis in the study area
indicated that C3 plants and chemical fertilizer were the main sources in the surface
sediments (0-40 cm) downstream of the Maozhou River. Furthermore, algae were the main
sources of organic matter in the deep sediments downstream of the Maozhou River and in
tributary sediments of the Shajing River. Nitrogen in the surface sediments (0-40 cm)
downstream of the Maozhou River mainly comes from inorganic fertilizer and soil organic
nitrogen, while nitrogen in the Maozhou River deep sediments and Shajing River sediments
mainly come from soil erosion and soil organic nitrogen.<br/> © 2017, Science Press.
All right reserved.
Number of references:33
Main heading:Nitrogen fertilizers
Controlled terms:Biogeochemistry - Biological materials - Carbon - Chemical analysis -
Organic compounds - Rivers - Sediments - Soils - Surficial sediments
Uncontrolled terms:Average concentration - Carbon and nitrogen - Carbon and nitrogen
isotopes - Carbon-nitrogen ratio - Chemical fertilizers - Distribution characteristics -
Inorganic fertilizers - Total nitrogen
Classification code:461.2 Biological Materials and Tissue Engineering - 481.2
Geochemistry - 483 Soil Mechanics and Foundations - 483.1 Soils and Soil Mechanics -
804 Chemical Products Generally - 804.1 Organic Compounds
Numerical data indexing:Size 0.00e+00m to 4.00e-01m
DOI:10.13227/j.hjkx.201704285
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 85>
Accession number:20181705054175
Title:Enrichment of Nitrospira in Activated Sludge and Kinetic Characterization
Authors:Yao, Qian (1); Peng, Dang-Cong (1); Zhao, Qiao-Di (1); Wang, Bo (2)
Author affiliation:(1) School of Municipal and Environmental Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China; (2) The Third Research
Institute of China Academy of Aerospace Aerodynamics, Beijing; 100074, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5201-5207
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Nitrospira was enriched from activated sludge by using fed-batch cultivation,
and its related kinetic characterization was studied. The results showed that Nitrospira
could be successfully enriched from the activated sludge for a controlled nitrite
concentration no higher than 2 mg·L<sup>-1</sup>. The maximum nitrate oxidation
rate was 48.72 mg·(g·h)<sup>-1</sup>. The fluorescence for the in situ
hybridization results showed that Nitrospira accounted for about 75% of the total
biomass, while Nitrobacter accounted for only 0.1%. In addition, the kinetic parameters
of Nitrospira at 20℃ were also investigated. The results showed that the optimum
growth temperature for Nitrospira was 30-35℃. The temperature correction
coefficient τ<inf>N</inf>was 1.046. The nitrite half-saturation constant
K<inf>S</inf>and oxygen half-saturation constant K<inf>O</inf>were (0.32±0.03)
mg·L<sup>-1</sup>and (1.52±0.09)mg·L<sup>-1</sup>, respectively.
This study on the kinetic characterization of Nitrospira provided a theoretical
foundation for the treatment plant design and process optimization.<br/> © 2017,
Science Press. All right reserved.
Number of references:28
Main heading:Kinetics
Controlled terms:Blast enrichment - Fish - Optimization
Uncontrolled terms:Activated sludge - Fed-batch cultivation - In-situ hybridization -
Kinetic characterization - Nitrospira - Optimum growth temperature - Temperature
correction - Theoretical foundations
Classification code:921.5 Optimization Techniques - 931 Classical Physics; Quantum
Theory; Relativity
Numerical data indexing:Mass_Density 2.00e-03kg/m3, Percentage 1.00e-01%, Percentage
7.50e+01%
DOI:10.13227/j.hjkx.201704114
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 86>
Accession number:20181705054163
Title:Mechanism of Pre-ozonation Enhanced Coagulation on DON in the Secondary Effluent
Authors:Liu, Bing (1, 2); Zheng, Yu-Ming (2); Wang, Da-Xiang (3); Li, Qing-Fei (1); Zhao,
Cheng-Mei (1); Yu, Guo-Zhong (1); Gu, Li (4)
Author affiliation:(1) Key Laboratory for Synergistic Prevention of Water and Soil
Environmental Pollution, School of Geographic Sciences, Xinyang Normal University,
Xinyang; 464000, China; (2) Institute of Urban Environment, Chinese Academy of Sciences,
Xiamen; 361021, China; (3) Xinyang Water Resources Survey Bureau, Xinyang; 464000, China;
(4) College of Urban Construction and Environmental Engineering, Chongqing University,
Chongqing; 400044, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5106-5115
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Municipal wastewater effluent is increasingly used as reclaimed water and source
water for downstream areas. Scholars are beginning to study the potential of dissolved
organic nitrogen (DON) as a precursor to the formation of nitrogen disinfection by-
products (DBP). In order to explore the mechanism of pre-ozonation coupled with enhanced
coagulation on DON in the secondary effluent, the distributions of molecular weight and
hydrophobicity/hydrophilicity of DON were analyzed. Disinfection by-product formation
potential from chlorination was also investigated. Lastly, the composition and chemical
structure of DON before and after coagulation were studied in combination with 3DEEM. Our
results showed that pre-ozonation followed by coagulation with PACl significantly
enhanced the removal of DON and mitigated DBP formation potentials. The following
conclusions can be drawn from this study: ① The tested effluent was very hard as
indicated by total hardness and high calcium concentrations, and the pH had an important
effect on pre-ozonation enhanced coagulation. As pH was decreased, the rates of DON, DOC
and UV<inf>254</inf>removal increased. At pH 6.2, the rate of DON removal was maximal,
and a 3.7 fold increase in removal-rate was achieved. ② Calcium played a critical
role in pre-ozonation enhanced coagulation. Zeta potentials and calcium concentrations
were substantially affected at higher ozone doses. At ozone dosage of 8
mg·L<sup>-1</sup>, Zeta potentials increased from -33 to -8 mV, and calcium
concentrations decreased from 116 to 89 mg·L<sup>-1</sup>. The ratio of calcium
hardness to DOC was relatively high in this study, approaching 24 mg·mg<sup>-
1</sup>( CaCO<inf>3</inf>/DOC). Thus, pre-ozonation promoted the removal of DON by
coagulation. ③ Large molecular weight and hydrophobic DON were easier to remove by
coagulation. Ozonation modified the DON characteristics to become more hydrophilic and
smaller in molecular weight. Coagulation reduced overall DBP formation potentials to less
than 20%. Pre-ozonation enhanced coagulation decreased overall DBP formation potentials
by more than 45%. (4) Finally, the 3DEEM spectra indicated that the formation potentials
and DON characteristics, due to disinfection, were related to three main peaks, which
corresponded to tryptophan-based proteins, aromatic proteins, and fulvic acids.<br/>
© 2017, Science Press. All right reserved.
Number of references:46
Main heading:Ozonization
Controlled terms:Amino acids - Byproducts - Calcite - Calcium - Calcium carbonate -
Coagulation - Disinfection - Effluents - Hardness - Hydrophobicity - Molecular weight -
Nitrogen - Ozone - Ozone water treatment - Proteins - Wastewater reclamation - Wastewater
treatment - Zeta potential
Uncontrolled terms:3DEEM - Disinfection byproducts - Dissolved organic nitrogen -
Enhanced coagulation - Pre-ozonation - Secondary effluent
Classification code:452.3 Industrial Wastes - 452.4 Industrial Wastes Treatment and
Disposal - 549.2 Alkaline Earth Metals - 801.3 Colloid Chemistry - 802.2 Chemical
Reactions - 802.3 Chemical Operations - 804 Chemical Products Generally - 931.2
Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics -
951 Materials Science
Numerical data indexing:Mass_Density 1.16e-01kg/m3 to 8.90e-02kg/m3, Mass_Density 8.00e-
03kg/m3, Percentage 2.00e+01%, Percentage 4.50e+01%, Voltage -3.30e-02V to -8.00e-03V
DOI:10.13227/j.hjkx.201705142
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 87>
Accession number:20181705046679
Title:Nitrite Type Denitrifying Phosphorus Removal Capacity of Cycle Activated Sludge
Technology Processes Under Different Inducing Patterns
Authors:Ma, Juan (1); Wang, Jin (1); Yu, Xiao-Jun (1); Zhang, Wei (1); Wei, Xue-Fen (1);
Chen, Yong-Zhi (1); Tian, Wen-Qing (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Lanzhou
Jiaotong University, Lanzhou; 730070, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4664-4672
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:A modified cyclic activated sludge technology (CAST) reactor was utilized to
investigate the phosphorus and nitrogen removal performance under different inducing
patterns in this experiment. The results show that nitrite addition under anoxic
conditions has a more inhibitory effect on the denitrifying phosphorus removal
performance of the sludge. The phosphorus removal performance of the system was least
effective when nitrite dosage was 5 mg·L<sup>-1</sup>. Compared to an anoxic
addition system, the CAST system is more stable under aerobic addition conditions. The
phosphorus removal properties have a slight fluctuation during each initial operating
condition when the nitrite concentrations are 5, 10 and 15 mg·L<sup>-1</sup>,
respectively. However, the phosphorus removal rate was observed to recover quickly and
remain stable at more than 95% after acclimatizing for 10, 6, and 34 days, respectively.
The effluent phosphorus concentration was less than 0.5 mg·L<sup>-1</sup>in all
cases. It was also found that the phosphorus removal performance deteriorated drastically
when the nitrite dosage was 20 mg·L<sup>-1</sup>. Nevertheless, the nitrite type
denitrifying phosphorus uptake capacity of the sludge was 10.4 times greater than that of
the sludge before acclimatizing, suggesting that the phosphorus performance deterioration
due to nitrite addition could be relieved and long-term addition is beneficial to
enriching denitrifying phosphorus accumulating bacteria using NO<inf>2</inf><sup>-
</sup>as an electron acceptor. Moreover, the sludge settling performance was found to be
effective and the sludge concentration decreased continuously when adding a certain
concentration of nitrite under aerobic conditions, which is of significant for sludge
reduction.<br/> © 2017, Science Press. All right reserved.
Number of references:31
Main heading:Phosphorus
Controlled terms:Denitrification - Nitrogen removal
Uncontrolled terms:Activated sludge - Cyclic activated sludge technology - Denitrifying
phosphorus removal - Nitrite - Performance deterioration - Phosphorus and nitrogen
removal - Phosphorus concentration - Sludge reduction
Classification code:802.2 Chemical Reactions - 804 Chemical Products Generally
Numerical data indexing:Age 9.32e-02yr, Mass_Density 1.00e-02kg/m3, Mass_Density 1.50e-
02kg/m3, Mass_Density 2.00e-02kg/m3, Mass_Density 5.00e-03kg/m3, Mass_Density 5.00e-
04kg/m3, Percentage 9.50e+01%
DOI:10.13227/j.hjkx.201705106
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 88>
Accession number:20181705046666
Title:Occurrence, Distribution, and Ecological Risk of Antibiotics in Surface Water in
the Liaohe River Basin, China
Authors:Zhang, Xiao-Jiao (1, 2); Bai, Yang-Wei (2); Zhang, Yuan (2); Ma, Shu-Qin (2);
Guo, Chang-Sheng (2); Zhang, Li (2, 3)
Author affiliation:(1) College of Fisheries and Life Science, Dalian Ocean University,
Dalian; 116023, China; (2) Laboratory of Riverine Ecological Conservation and Technology,
Chinese Research Academy of Environmental Sciences, Beijing; 100012, China; (3) School of
Environmental Sciences, Liaoning University, Shenyang; 110036, China
Corresponding author:Zhang, Yuan(zhangyuan@craes.org.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4553-4561
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The pollution and ecological risk characteristics of five typical antibiotics
found in the surface water of the Liaohe River Basin (LRB) were analyzed and evaluated
using solid-phase extraction and high-performance liquid chromatography tandem mass
spectrometry. These results showed that macrolides have the highest average concentration
of all antibiotics in the surface water of the LRB of 201.88 ng·L<sup>-1</sup>,
followed by quinolones, trimethoprim, and sulfonamides with average concentrations of
113.40 ng·L<sup>-1</sup>, 93.93 ng·L<sup>-1</sup>, and 124.27
ng·L<sup>-1</sup>, respectively. Tetracycline demonstrated the lowest
concentration at 24.37 ng·L<sup>-1</sup>. In addition, antibiotics pollution of
the Daliao River is clearly identified as being higher than that of the Liaohe River, and
the highest proportion of antibiotic pollution (49.1%) is found to come from human use
according to a source apportionme0nt analysis. Relatively high levels of ecological risk
are identified from Trimethoprim and Erythromycin-H<inf>2</inf>O concentrations,
especially for cities such as Xinmin, Shenyang, and Anshan. The risk assessment indicates
that surface water of the LRB faces high ecological risk and argues for greater attention
to be paid to risk management and pollution controls.<br/> © 2017, Science Press.
All right reserved.
Number of references:50
Main heading:River pollution
Controlled terms:Amides - Antibiotics - High performance liquid chromatography - Mass
spectrometry - Phase separation - Risk assessment - Risk management - Rivers - Sulfur
compounds - Surface waters - Watersheds
Uncontrolled terms:Average concentration - Ecological risk assessment - Ecological risks
- High-performance liquid chromatography tandem mass spectrometries - Quinolones - River
basins - Solid-phase extraction - Trimethoprim
Classification code:444.1 Surface Water - 453 Water Pollution - 461.6 Medicine and
Pharmacology - 641.1 Thermodynamics - 801 Chemistry - 804.1 Organic Compounds - 914.1
Accidents and Accident Prevention
Numerical data indexing:Mass_Density 1.13e-07kg/m3, Mass_Density 1.24e-07kg/m3,
Mass_Density 2.02e-07kg/m3, Mass_Density 2.44e-08kg/m3, Mass_Density 9.39e-08kg/m3,
Percentage 4.91e+01%
DOI:10.13227/j.hjkx.201704206
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 89>
Accession number:20181705054187
Title:Impacts of Silicon Fertilizer as Base Manure on Cadmium Bioavailability in Soil and
on Cadmium Accumulation in Rice Plants
Authors:Gao, Zi-Xiang (1); Zhou, Hang (1); Yang, Wen-Tao (2); Gu, Jiao-Feng (1); Chen,
Li-Wei (1); Du, Wen-Qi (1); Xu, Jun (1); Liao, Bo-Han (1)
Author affiliation:(1) College of Environmental Science and Engineering, Central South
University of Forestry and Technology, Changsha; 410004, China; (2) College of Bioscience
and Technology, Hunan Agricultural University, Changsha; 410128, China
Corresponding author:Liao, Bo-Han(liaobh1020@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5299-5307
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The impacts of silicon (Si) on cadmium (Cd) bioavailability in soil and Cd
accumulation in rice plants were investigated in pot experiments with rice (Oryza sativa
L.) cultivation. Silicon fertilizer as the base manure (Si 0, 15, 30, and 60
mg·kg<sup>-1</sup>) was added in simulated slightly Cd-contaminated soil (total
soil Cd of 0.72 mg·kg<sup>-1</sup>) and severe Cd-contaminated soil (total soil Cd
of 5.08 mg·kg<sup>-1</sup>). It indicated that the application of 15-60
mg·kg<sup>-1</sup>Si before the rice was transplanted improved soil pH values and
reduced the contents of exchangeable-Cd and TCLP extractable-Cd in the soil by 24.2%-
43.7% and 12.7%-46.8%, respectively, during the rice growing stages. The reduction in
soil Cd bioavailability resulted from the complexing of Si and Cd, and the reduction
followed the order: slightly Cd-contaminated soil>severely Cd-contaminated soil. It
was obvious that silicon fertilizer improved rice biomass above ground, especially for
rice grain yield. In the slightly Cd-contaminated soil, Si both promoted and restrained
soil Cd transportation from the rice root to the shoot; the low application (Si 15
mg·kg<sup>-1</sup>) and high application (Si 60 mg·kg<sup>-1</sup>) of Si
both promoted Cd transportation, but the medium application (Si 30 mg·kg<sup>-
1</sup>) restrained Cd transportation. With increasing silicon fertilizer application, Cd
contents in brown rice increased first and then decreased, ranging from 0.07-0.15
mg·kg<sup>-1</sup>, remaining lower than 0.2 mg·kg<sup>-1</sup>. In the
severely Cd-contaminated soil, Si restrained the soil Cd transportation from the rice
root to the shoot. The Cd contents in brown rice, husk, and straw were reduced by 38.7%-
48.5%, 35.7%-70.7%, and 30.9%-40.7%, respectively, and Cd contents in brown rice were
0.23-0.28 mg·kg<sup>-1</sup>. Considering rice grain yields and Cd contents in
brown rice, it was recommended that the Si application be 30 mg·kg<sup>-1</sup>of
Si in the slightly Cd-contaminated soil and Si 15-60 mg·kg<sup>-1</sup>in the
severely Cd-contaminated soil.<br/> © 2017, Science Press. All right reserved.
Number of references:54
Main heading:Soil pollution
Controlled terms:Biochemistry - Contamination - Cultivation - Fertilizers - Grain
(agricultural product) - Manures - Silicon - Soils
Uncontrolled terms:Accumulation - Bioavailability - Cd accumulation - Cd-contaminated
soils - Fertilizer applications - Growing stages - Rice - Rice (Oryza sativa L.)
Classification code:483.1 Soils and Soil Mechanics - 549.3 Nonferrous Metals and Alloys
excluding Alkali and Alkaline Earth Metals - 801.2 Biochemistry - 804 Chemical Products
Generally - 821 Agricultural Equipment and Methods; Vegetation and Pest Control
Numerical data indexing:Percentage 1.27e+01% to 4.68e+01%, Percentage 2.42e+01% to 4.37e
+01%, Percentage 3.09e+01% to 4.07e+01%, Percentage 3.87e+01% to 4.85e+01%
DOI:10.13227/j.hjkx.201704210
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 90>
Accession number:20181705046671
Title:Nitrification and Denitrification Potential of Benthic Sediments in a Suburban
Stream under Intense Human Disturbance Scenarios
Authors:Li, Ru-Zhong (1); Zheng, Xia (1); Gao, Su-Di (2); Ye, Zou (1)
Author affiliation:(1) School of Resources and Environmental Engineering, Hefei
University of Technology, Hefei; 230009, China; (2) College of Civil and Environmental
Engineering, Anhui Xinhua University, Hefei; 230031, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4598-4606
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Water and benthic sediment samples were collected monthly from six sites over a
2-km reach in a first-order stream located in the northeastern rural-urban fringe of
Hefei City, from May 2016 to January 2017. These sites were scattered in three stream
reach types as natural pattern sections (Scenario 1), point source pollution sections
(Scenario 2), and severe soil erosion sections (Scenario 3). The potential rates of
nitrification and denitrification in the sediments were measured and variable
characteristics were evaluated quarterly. Moreover, a difference analysis of each of the
three scenarios and an influencing factor analysis for nitrification and denitrification
potentials were subsequently conducted. Our results show that: (1) the mean value of the
nitration ratios for total sediment samples is 0.381%, of which the maximum nitration
ratio emerged in Scenario 2. As for Scenario 1, the nitration ratio in summer is the
larger than in winter. The nitration ratios for Scenarios 2 and 3 rank from largest to
smallest as spring>summer>autumn>winter. (2) The mean value of the nitrification
rate of the total sediment samples is 0.364 mg·(kg·d)<sup>-1</sup>, of
which the maximum nitrification rate is associated with in Scenario 2. The nitrification
rate is highest in winter, while similar for all other seasons in Scenarios 2 and 3.
There is not much difference all year round for Scenario 1. (3) Average values for the
denitrification ratio and denitrification rate for all sediment samples are 37.25% and
57.68 mg·(kg·d)<sup>-1</sup>, respectively. Both of these are higher for
Scenario 2 than the other two scenarios for the same season. The ranking for
denitrification for Scenarios 1 and 2 is summer>spring>autumn>winter, and
spring>summer>autumn>winter in Scenario 3. (4) According to the difference
analysis, significant differences not only exist between the nitrification rates between
Scenarios 1 and 2 but also for the denitrification ratios and denitrification rates
between Scenarios 1 and 3. In addition, there is an obvious difference in the nitration
ratio between Scenarios 2 and 3. (5) Partial least-squares regressive analysis indicates
that there is significant difference between the important influencing factors related to
the nitration ratio and nitrification rate for each of the three scenarios.<br/> ©
2017, Science Press. All right reserved.
Number of references:25
Main heading:Denitrification
Controlled terms:Factor analysis - Least squares approximations - Nitrification -
Sediments - Urban growth
Uncontrolled terms:Benthic sediments - Denitrification rate - Human disturbances -
Nitrification and denitrification - Nitrification rates - Suburban stream
Classification code:403.1 Urban Planning and Development - 483 Soil Mechanics and
Foundations - 802.2 Chemical Reactions - 921.6 Numerical Methods - 922.2 Mathematical
Statistics
Numerical data indexing:Percentage 3.72e+01%, Percentage 3.81e-01%, Size 2.00e+03m
DOI:10.13227/j.hjkx.201704201
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 91>
Accession number:20181705054170
Title:Substrate Inhibition and Kinetic Characteristics of Marine Anaerobic Ammonium
Oxidizing Bacteria Treating Saline Wastewater
Authors:Zhou, Tong (1); Yu, De-Shuang (1); Li, Jin (1); Wu, Guo-Dong (1); Wang, Xiao-Jing
(1)
Author affiliation:(1) School of Environmental Science and Engineering, Qingdao
University, Qingdao; 266071, China
Corresponding author:Li, Jin(ljin0532@126.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5162-5168
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:An anaerobic sequencing batch reactor (ASBR) was used to study substrate
inhibition and kinetic characteristics of marine anaerobic ammonium oxidizing bacteria
(MAAOB) treating saline wastewater. The results indicated that when ammonia increased to
1 200 mg·L<sup>-1</sup>, the MAAOB still maintained good nitrogen removal
capability, though there was a slight inhibitory effect. At the same time, nitrite
nitrogen removal efficiency was stable at about 80.70%. When nitrite increased to 265.6
mg·L<sup>-1</sup>, the MAAOB were inhibited obviously, and ammonia nitrogen
removal efficiency decreased to about 63.01%. When influent nitrite concentration
increased to 305.6 mg·L<sup>-1</sup>, the removal rate of ammonia nitrogen further
decreased to 43.93%. The kinetic characteristics resulting from inhibition of the MAAOB
were simulated by the Haldane model and Aiba model. Three parameters, TNRR<inf>max</inf>,
K<inf>S</inf>, and K<inf>i</inf>, and the relationship between effluent substrate
concentration and total nitrogen loading (TNRR) were evaluated. Based on further
analysis, the Haldane model was more suitable for describing dynamic characteristics
resulting from NH<inf>4</inf><sup>+</sup>-N inhibition, while the Aiba model was more
suitable for describing the dynamic characteristics resulting from NO<inf>2</inf><sup>-
</sup>-N inhibition. The predicted effluent inhibitory concentrations of
NH<inf>4</inf><sup>+</sup>-N and NO<inf>2</inf><sup>-</sup>-N were 3 893.625
mg·L<sup>-1</sup>and 287.208 mg·L<sup>-1</sup>, respectively. The results
could provide a theoretical basis for saline wastewater treatment by MAAOB.<br/> ©
2017, Science Press. All right reserved.
Number of references:30
Main heading:Nitrogen removal
Controlled terms:Activated sludge process - Ammonia - Bacteria - Batch reactors -
Efficiency - Effluents - Enzyme kinetics - Kinetics - Nitrogen oxides - Wastewater
treatment
Uncontrolled terms:Ammonia nitrogen removal - Ammonium oxidizing bacteria - Anaerobic
sequencing batch reactors - Biological nitrogen removal - Inhibitory concentration -
Saline wastewater - Saline wastewater treatment - Substrate inhibition
Classification code:452 Municipal and Industrial Wastes; Waste Treatment and Disposal -
802.1 Chemical Plants and Equipment - 804.2 Inorganic Compounds - 913.1 Production
Engineering - 931 Classical Physics; Quantum Theory; Relativity
Numerical data indexing:Mass_Density 1.20e+00kg/m3, Mass_Density 2.66e-01kg/m3,
Mass_Density 2.87e-01kg/m3, Mass_Density 3.06e-01kg/m3, Mass_Density 8.94e-01kg/m3,
Percentage 4.39e+01%, Percentage 6.30e+01%, Percentage 8.07e+01%
DOI:10.13227/j.hjkx.201705233
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 92>
Accession number:20181705054164
Title:Base Activation of Peroxymonosulfate for the Degradation of Ciprofloxacin in Water
Authors:Ge, Yong-Jian (1); Cai, Xian-Wei (1); Lin, Han (1); Xu, Meng-Yuan (1); Shen, Yi-
Ting (1); Zhou, Dan (1); Qian, Meng-Jie (1); Deng, Jing (1)
Author affiliation:(1) College of Civil Engineering and Architecture, Zhejiang University
of Technology, Hangzhou; 310014, China
Corresponding author:Deng, Jing(zjut_djing@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5116-5123
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The degradation of ciprofloxacin (CIP) in a base activated peroxymonosulfate
(PMS) system was investigated. Results showed that a base activated PMS system can
efficiently remove CIP. Singlet oxygen (<sup>1</sup>O<inf>2</inf>) and superoxide anion
radical (O<inf>2</inf><sup>-</sup>·) were confirmed to be the major reactive
oxygen species through radical quenching experiments. The NaOH concentration, PMS
concentration, reactive temperature, and coexisting anions also affected CIP removal.
Both NaOH and PMS concentration presented a dual effect, which was highly concentration
dependent. An improvement in reactive temperature accelerated CIP degradation, and the
calculated activation energy (E<inf>a</inf>) was determined to be 5.09
kJ·mol<sup>-1</sup>through the fitting of the Arrhenius equation. Different anions
had different effects on CIP degradation. No obvious change in CIP concentration was
observed when Cl<sup>-</sup>, SO<inf>4</inf><sup>2-</sup>, and NO<inf>3</inf><sup>-
</sup>were introduced. H<inf>2</inf>PO<inf>4</inf><sup>2-</sup>inhibited the degradation,
but CO<inf>3</inf><sup>2-</sup>significantly promoted it. Ten oxidation products were
identified through UPLC-MS/MS analysis, and the piperazine ring in the molecular
structure of CIP was preferentially attacked by reactive oxygen species in the base
activated PMS system.<br/> © 2017, Science Press. All right reserved.
Number of references:30
Main heading:Chlorine compounds
Controlled terms:Activation energy - Antibiotics - Degradation - Molecular oxygen -
Negative ions - Sodium hydroxide
Uncontrolled terms:Activation energies (Ea) - Base - Ciprofloxacin - Concentration-
dependent - Oxidation products - Peroxymonosulfate - Reactive oxygen species - Superoxide
anion radicals
Classification code:461.6 Medicine and Pharmacology - 802.2 Chemical Reactions - 804.2
Inorganic Compounds
DOI:10.13227/j.hjkx.201704232
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 93>
Accession number:20181705054154
Title:Distribution of Different Mercury Species in the Waterbody at Sanmenxia Reservoir
Authors:Cheng, Liu (1); Ma, Bing-Juan (1); Zhou, Wei-Li (1); Wang, Li (2); Zhi, Yin (3);
Liu, Qing-Wei (3); Mao, Yu-Xiang (1)
Author affiliation:(1) Institute of Resources & Environment, Henan Polytechnic
University, Jiaozuo; 454003, China; (2) Lomon Billions Group Co., Ltd., Jiaozuo; 454003,
China; (3) Jiaozuo Environmental Monitoring Station, Jiaozuo; 454003, China
Corresponding author:Mao, Yu-Xiang(yuxiangmao@hpu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5032-5038
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In order to obtain the distribution of different species of mercury (Hg) in the
water in the Sanmenxia Reservoir, cold vapor atomic fluorescence spectrometry (CVAFS) and
aqueous phase ethylation derivatization-gas chromatography-atomic fluorescence
spectrometry (GC-CVAFS) methods were used for the analysis of total Hg (THg) and
methylmercury (MeHg) in water and sediment samples, respectively. It was found that the
levels of THg, dissolved mercury, and particulate mercury in the water ranged from 1.65-
9.65, 0.80-3.16, and 0.70-7.81 ng·L<sup>-1</sup>, respectively. The THg in the
water could meet the requirement for the Class I criterion in the national surface water
environmental quality standard (GB 3838-2002). The amounts of MeHg, dissolved MeHg, and
particulate MeHg in the water samples were 0.05-0.36, 0.02-0.14, and ND-0.26
ng·L<sup>-1</sup>, respectively. No evident seasonal or spatial patterns for Hg
were observed. The THg and MeHg in the Sanmenxia Reservoir were within the ranges for
those in uncontaminated waterbodies worldwide. The amount of THg in the sediments was
(92.96±10.65) ng·g<sup>-1</sup>and (80.06±19.14) ng·g<sup>-
1</sup>, while the amount of MeHg in the corresponding sediment samples was
(0.33±0.14) ng·g<sup>-1</sup>and (0.50±0.19) ng·g<sup>-
1</sup>for wet and dry seasons, respectively. The ratios of MeHg/THg in the sediment of
the Sanmenxia Reservoir were relatively small in comparison to those in other aqueous
systems, indicating that methylation might play a minor role in the biogeochemistry of Hg
in the Sanmenxia Reservoir. This might be attributed to the high dissolved oxygen levels
of the bottom water and low organic carbon content of the sediments.<br/> © 2017,
Science Press. All right reserved.
Number of references:25
Main heading:Sediments
Controlled terms:Alkylation - Biochemical oxygen demand - Dissolution - Dissolved oxygen
- Fluorescence - Fluorescence spectroscopy - Gas chromatography - Mercury (metal) -
Mercury compounds - Organic carbon - Population distribution - Spectrometry - Surface
waters - Water
Uncontrolled terms:Atomic fluorescence spectrometry - Dissolved oxygen levels -
Environmental quality standards - Methyl mercury - Organic carbon contents - Particulate
mercury - Sanmenxia Reservoir - Wet and dry seasons
Classification code:405.3 Surveying - 444.1 Surface Water - 483 Soil Mechanics and
Foundations - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth
Metals - 741.1 Light/Optics - 802.2 Chemical Reactions - 802.3 Chemical Operations -
804.1 Organic Compounds - 941.4 Optical Variables Measurements
Numerical data indexing:Mass_Density 7.00e-10kg/m3 to 7.81e-09kg/m3
DOI:10.13227/j.hjkx.201705227
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 94>
Accession number:20181705046677
Title:Effect of Temperature on Nitrogen Removal Performance and the Extracellular
Polymeric Substance (EPS) in a Sequencing Batch Reactor (SBR)
Authors:Sun, Hong-Wei (1); Chen, Cui-Zhong (1); Wu, Chang-Feng (2); Zhao, Hua-Nan (1);
Yu, Xue (1); Fang, Xiao-Hang (3)
Author affiliation:(1) School of Environmental and Municipal Engineering, Lanzhou
Jiaotong University, Lanzhou; 730070, China; (2) Lanzhou Veolia Water(Group) Co. Ltd.,
Lanzhou; 730060, China; (3) South China Institute of Environmental Sciences, Ministry of
Environmental Protection, Guangzhou; 510655, China
Corresponding author:Fang, Xiao-Hang(fangxiaohang@scies.org)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4648-4655
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:In this paper, the long-term effects of temperature on the nitrogen removal
performance and the extracellular polymeric substance (EPS) in a sequencing batch reactor
(SBR) treating synthetic wastewater was investigated under three temperature conditions
(15℃, 25℃, 35℃). The results showed that high temperatures (35℃)
could promote the establishment of short-cut nitrification processes and improve nitrogen
removal performance greatly. Temperature had a significant impact on the EPS and its
composition. With an increased temperature, the EPS and tightly bound EPS (TB-EPS)
content decreased, while, loosely bound EPS (LB-EPS) increased slowly. TB-EPS became
dominant in the EPS (the percentage of TB-EPS/EPS was 69.0%-79.5%), however, the ratio of
TB-EPS/LB-EPS decreased from 3.8 (15℃) to 3.6 (25℃), and then to 2.2
(35℃) with a gradual increase in temperature. Moreover, protein (PN) and DNA in the
EPS, TB-EPS, and LB-EPS decreased with an increasing temperature. Carbohydrates (PS) in
the EPS and LB-EPS increased as temperature increased, nevertheless, PS in TB-EPS
decreased. Furthermore, 25℃ was identified as the breaking-point temperature in the
variation of PN, DNA and PS concentrations. At 15℃ and 25℃, PN was the main
component in TB-EPS and LB-EPS. PS has the second highest concentration and DNA the
least. However, PS were the dominant component at 35℃, with PN having the second
highest concentration, and DNA having a subtle concentration. Moreover, at 15℃ and
25℃, the EPS content increased in the nitrification process and reduced in the
denitrification process.<br/> © 2017, Science Press. All right reserved.
Number of references:24
Main heading:Temperature
Controlled terms:Batch reactors - Denitrification - DNA - Nitration - Nitrification -
Nitrogen removal - Polymers - Wastewater treatment
Uncontrolled terms:Biological denitrification - Denitrification process - Effect of
temperature - Extra-cellular polymeric substances - Increasing temperatures -
Nitrification process - Nitrite accumulation - Sequencing batch reactors
Classification code:452.4 Industrial Wastes Treatment and Disposal - 461.2 Biological
Materials and Tissue Engineering - 641.1 Thermodynamics - 802.1 Chemical Plants and
Equipment - 802.2 Chemical Reactions - 815.1 Polymeric Materials
Numerical data indexing:Percentage 6.90e+01% to 7.95e+01%
DOI:10.13227/j.hjkx.201704270
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 95>
Accession number:20181705054174
Title:Fast Start-up and Performance of the CANON Process Based on a SBAF Systemand
Evolution Properties of Microorganisms
Authors:Yue, Xiu (1); Liu, Zhu-Han (1); Yu, Guang-Ping (1); Ji, Shi-Ming (1); Tang, Jia-
Li (1)
Author affiliation:(1) Shenyang Institute of Automation in Guangzhou, Chinese Academy of
Sciences, Guangzhou; 511458, China
Corresponding author:Yu, Guang-Ping(ygping@sia.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5192-5200
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The CANON process has the disadvantages of long start-up periods and unstable
operation. In the SBAF system, under strictly controlled conditions of dissolved oxygen
(DO) and temperature, a CANON process is started up in 51 days and is operated stably for
278 days using a new method of independent research and development. The results show
that the maximum and average ARR are 98.9% and 95.1%, respectively. The maximum and
average TNR are 85.9% and 75.1%, respectively. Furthermore, a small quantity of
nitratenitrogen exists in this system. The microbial structure features of the sludge are
analyzed by 16S rDNA macro high-throughput genome sequencing. It is verified that
Proteobacteria is the main microorganism in the AOB, and Planctomycete Candidatus
Brocadia is the main microorganism in the AnAOB. Both of them collaborate on total
nitrogen removal in the CANON process.<br/> © 2017, Science Press. All right
reserved.
Number of references:24
Main heading:Microorganisms
Controlled terms:Dissolved oxygen - Nitrogen removal
Uncontrolled terms:AnAOB - CANON - Controlled conditions - Evolution properties -
Independent research - Microbial structures - SBAF - Total nitrogen removal
Classification code:461.9 Biology
Numerical data indexing:Age 1.40e-01yr, Age 7.62e-01yr, Percentage 7.51e+01%, Percentage
8.59e+01%, Percentage 9.51e+01%, Percentage 9.89e+01%
DOI:10.13227/j.hjkx.201704255
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 96>
Accession number:20181705046688
Title:Impact of the Biodegradation of 6:2 Fluorotelomer Alcohol on the Bacterial
Community Structure of Surface Sediment
Authors:Wang, Dan (1); Hou, Zhen (1); Zhang, Qi (1); Zhou, Ying (1); Lu, Xiao-Xia (1)
Author affiliation:(1) Laboratory for Earth Surface Processes, College of Urban and
Environmental Sciences, Peking University, Beijing; 100871, China
Corresponding author:Lu, Xiao-Xia(luxx@urban.pku.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4747-4755
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Fluorotelomer alcohol (6:2 FTOH) is a polyfluoalkyl substance that has been
widely used in industry and consumer products in recent years, causing potential harm to
the environment. However, currently the impact of 6:2 FTOH and its degradation products
on microbial communities in sediment is unclear. The purpose of this study is to explore
the impact of the biodegradation of 6:2 FTOH on bacterial community structures in surface
sediment based on gene analysis. Surface sediment and river water were collected from Hai
river, Tianjin, and a microcosm experiment was performed in the laboratory. The
concentration of 6:2 FTOH and its degradation products were analyzed by liquid
chromatograph-mass spectrometry/mass spectrometry (LC-MS/MS). The bacterial community
structure was analyzed by denaturing gradient gel electrophoresis and high-throughput
sequencing. The results showed that 6:2 FTOH could be degraded by microorganisms (half-
life was less than 3 d), producing transient products such as 6:2 fluorotelomer
carboxylic acid (FTCA) and 6:2 fluorotelomer unsaturated carboxylic acid (FTUCA) and
stable products such as 5:2 fluorotelomer (FT) ketone, 5:2 fluorotelomer alcohol (sFTOH),
perfluorohexanoic acid(PFHxA), perfluoro-n-pentanoic acid (PFPeA), perfluorobutanoic acid
(PFBA) and 5:3 polyfluorinated acid. At different stages of 6:2 FTOH degradation, a
change of bacteria and the predominant population became somewhat different. Based on the
experimental results for 100 d, at the Phylum level, the biodegradation of 6:2 FTOH
greatly increases the abundance of Chloroflexi (+24.8%) and decreases the abundance of
Proteobacteria (-17.8%) and Firmicutes (-15.9%). At the Class level, due to the
biodegradation of 6:2 FTOH, bacteria with notable increases included Anaerolineae
(+19.6%) and δ-Proteobacteria (+4.3%), while bacteria with notable decreases
included Ε-Proteobacteria (-20.0%), Clostridia (-10.1%), Bacilli (-5.8%) and
γ-Proteobacteria (-4.2%). At the Genus level, due to the biodegradation of 6:2
FTOH, bacteria with notable increases included Anaerolineaceae_(uncultured) (+19.1%) and
Thioalkalispira (+13.3%), while bacteria with notable decreases included Vibrio (-14.1%),
Sulfurimonas (-13.2%), Bacillus (-5.1%), Sulfurovum (-4.2%) and Fusibacter (-4.1%). These
results are helpful for predicting the response of bacteria to the contamination of
polyfluoalkyl substances and isolating the bacteria capable of the biodegradation of
polyfluoalkyl substances.<br/> © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Biodegradation
Controlled terms:Bacteria - Bacteriology - Carboxylic acids - Consumer products -
Degradation - Electrophoresis - Ketones - Mass spectrometry - Sediments - Surficial
sediments
Uncontrolled terms:Bacterial community structure - Denaturing gradient gel
electrophoreses (DGGE) - Diversity index - Fluorotelomer alcohols - Fluorotelomer
carboxylic acids - Fluorotelomer unsaturated carboxylic acids - High-throughput
sequencing - Microcosm experiments
Classification code:483 Soil Mechanics and Foundations - 801 Chemistry - 802.2
Chemical Reactions - 804.1 Organic Compounds
Numerical data indexing:Percentage -1.01e+01%, Percentage -1.32e+01%, Percentage -1.41e
+01%, Percentage -1.59e+01%, Percentage -1.78e+01%, Percentage -2.00e+01%, Percentage -
4.10e+00%, Percentage -4.20e+00%, Percentage -5.10e+00%, Percentage -5.80e+00%
DOI:10.13227/j.hjkx.201704297
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 97>
Accession number:20181705046661
Title:Distribution Characteristics of Chromophoric Dissolved Organic Matter and Nutrients
from the Yellow Sea and Bohai Sea in Autumn
Authors:Tang, Yong (1, 2); Sun, Yu-Yan (1, 2); Shi, Xiao-Yong (1, 3); Han, Xiu-Rong (1,
2); Su, Rong-Guo (1, 2)
Author affiliation:(1) College of Chemistry and Chemical Engineering, Ocean University of
China, Qingdao; 261000, China; (2) Key Laboratory of Marine Chemistry Theory and
Technology, Ministry of Education, Ocean University of China, Qingdao; 261000, China; (3)
National Marine Hazard Mitigation Service, Beijing; 100194, China
Corresponding author:Shi, Xiao-Yong(shixy@ouc.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4501-4512
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Water samples were collected from the Yellow and Bohai seas during November 2013
and the chromophoric dissolved organic matter (CDOM) and nutrients concentrations were
investigated, including their composition, source and distribution characteristics. CDOM
was analyzed by excitation-emission matrix spectroscopy (EEMS) in combination with a
parallel factor analysis (PARAFAC). Three terrestrial humic-like substances (C1, C2, and
C3) and one protein-like (C4) substances were identified. The three terrestrial humic-
like components had a similar horizontal distribution, decreasing from inshore to
offshore. The protein-like component, showed higher values for both inshore and offshore
areas in the Yellow Sea at the surface layer and the middle layer of the Bohai Sea, while
in other layers it had a similar distribution pattern as the terrestrial humic-like
components. In the Bohai Sea, the dissolved inorganic nitrogen (DIN) concentration showed
a decreasing trend from inshore to offshore areas and the concentration of dissolved
inorganic phosphorus (DIP) gradually decreased from the Caofeidian coastal and central
areas to other adjacent areas. The dissolved organic nitrogen (DON) showed an increasing
from inshore to the central area of the Bohai Sea. DIN and DON were higher in surface
layer than in the bottom layer and for DIP this was the opposite in the Bohai Sea. In the
Yellow Sea, DON concentrations showed a decreasing trend from inshore to offshore areas.
DIN and DIP had higher concentrations at inshore areas in the surface and middle layers,
while in the bottom layer they had higher concentrations in offshore areas. The vertical
distribution of the DIN and DIP showed higher values in the bottom layer than surface
layers and for DON this was the opposite. These results also showed that the
concentrations of DIN, DON, and DIP in the Bohai sea were overall higher than the Yellow
Sea. A discriminant analysis was performed through redundancy analysis (RAD) of these
water quality parameters, including the four fluorescent components, an absorption
coefficient (a<inf>355</inf>), chlorophyll a concentration, conductivity, dissolved
oxygen (DO), dissolved organic carbon (DOC), DIN, DON, and DIP. The RDA indicated that
the four fluorescent components are mainly affected by terrestrial inputs. DOC was
affected by both terrestrial and marine sources but terrestrial inputs were the major
contributor. It was also indicated that the DIN concentration was affected by terrestrial
inputs in the Bohai Sea area and by both terrestrial and marine sources in the Yellow
Sea. DON concentrations were mainly affected by marine sources in the Bohai Sea and
terrestrial inputs in the Yellow Sea. DIP concentrations were affected by both
terrestrial and marine sources in the studied areas.<br/> © 2017, Science Press. All
right reserved.
Number of references:43
Main heading:Dissolved oxygen
Controlled terms:Biogeochemistry - Biological materials - Discriminant analysis -
Dissolution - Factor analysis - Fluorescence - Multivariant analysis - Nitrogen -
Nutrients - Organic carbon - Proteins - Quality control - Redundancy - Water absorption
- Water analysis - Water quality
Uncontrolled terms:Bohai Sea - Chromophoric dissolved organic matter - Excitation
emission matrices - Parallel factor analysis - Redundancy analysis - Yellow sea
Classification code:445.2 Water Analysis - 461.2 Biological Materials and Tissue
Engineering - 481.2 Geochemistry - 741.1 Light/Optics - 802.3 Chemical Operations -
804 Chemical Products Generally - 804.1 Organic Compounds - 913.3 Quality Assurance
and Control - 922 Statistical Methods - 922.2 Mathematical Statistics
DOI:10.13227/j.hjkx.201703183
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 98>
Accession number:20181705046690
Title:Identification and Nitrogen Removal Characteristics of the Heterotrophic
Nitrification and Aerobic Denitrification Bacterial Strain DK1
Authors:Mu, Dong-Yang (1); Jin, Peng-Fei (1); Peng, Yong-Zhen (1); Li, Xi-Yao (1); Zhang,
Qiong (1); He, Jian-Zhong (2)
Author affiliation:(1) National Engineering Laboratory for Advanced Municipal Wastewater
Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing
University of Technology, Beijing; 100124, China; (2) Department of Civil &
Environmental Engineering, National University of Singapore, Singapore; 117576, Singapore
Corresponding author:Peng, Yong-Zhen(pyz@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4763-4773
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Nitrogen removal by a newly discovered Pseudomons sp. strain, DK1, isolated from
activated sludge was investigated. Using glucose as a carbon source and a n(C)/n(N) ratio
of five, batch experiments showed that the aerobic denitrification removal rate was 4.09
mg·(L·h)<sup>-1</sup>and 4.43 mg·(L·h)<sup>-1</sup>with
NaNO<inf>3</inf>or NaNO<inf>2</inf>, respectively. Completely nitrogen removal was
achieved when using these two nitrogen sources. DK1 was also found to heterotrophically
remove NH<inf>4</inf><sup>+</sup>-N at a rate of 2.32 mg·(L·h)<sup>-
1</sup>and to carry out anoxic denitrification of a range of concentrations of
NO<inf>2</inf><sup>-</sup>-N (from about 100 to 300 mg·L<sup>-1</sup>) within a
maximum of 36 hours of inoculation. In the presence of both NO<inf>3</inf><sup>-</sup>-N
and NO<inf>2</inf><sup>-</sup>-N, DK1 was found to preferentially denitrify
NO<inf>3</inf><sup>-</sup>-N. Simultaneous nitrification and denitrification (SND)
capacity of the DK1 strain was observed when using ammonium and nitrate or ammonium and
nitrite and the corresponding nitrogen removal rates reached as high as 95.06% and 94.69%
within 30 hours of inoculation, respectively. Ammonium with both nitrate and nitrite
resulted in a 100% nitrogen removal within the same time frame. The ability to achieve
SND and to denitrify both NO<inf>3</inf><sup>-</sup>-N and NO<inf>2</inf><sup>-</sup>-N
makes the DK1 strain potentially useful for future application in nitrogenous wastewater
treatment.<br/> © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Nitrogen removal
Controlled terms:Denitrification - Nitrates - Nitrification - Nitrogen oxides - Sodium
nitrate - Wastewater treatment
Uncontrolled terms:Aerobic denitrification - Anoxic denitrification - Bacterial strains -
Heterotrophic nitrification - Nitrogen sources - Nitrogenous wastewaters - Removal
characteristics - Simultaneous nitrification and denitrification
Classification code:452.4 Industrial Wastes Treatment and Disposal - 802.2 Chemical
Reactions - 804.2 Inorganic Compounds
Numerical data indexing:Mass_Density 1.00e-01kg/m3 to 3.00e-01kg/m3, Percentage 1.00e
+02%, Percentage 9.47e+01%, Percentage 9.51e+01%, Time 1.08e+05s, Time 1.30e+05s
DOI:10.13227/j.hjkx.201704131
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 99>
Accession number:20181705054168
Title:Phosphorus Removal Capacity of Domestic Wastewater Treated by a Modified CAST
Process Under Different Operating Modes
Authors:Ma, Juan (1); Wang, Jin (1); Yu, Xiao-Jun (1); Zhou, Meng (1); Sun, Hong-Wei (1);
Wang, Lei (1)
Author affiliation:(1) School of Environmental and Municipal Engineering, Lanzhou
Jiaotong University, Lanzhou; 730070, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5146-5153
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:A modified cyclic activated sludge technology (CAST) treating domestic
wastewater was employed to investigate the effects of different operating modes, such as
C/P ratio, reflux ratio, and temperature on phosphorus removal. The results illustrated
that at room temperature the phosphorus removal of the system improved significantly when
the influent C/P ratio increased from 50 to 100, with the removal efficiency increasing
rapidly from 15% to 95.6%. Decreasing the C/P ratio to 75, the phosphorus removal
performance declined due to influent carbon source deficiency, and the mean phosphorous
removal efficiency decreased to 51.4%. At the same time, the long-term addition of an
easily degradable carbon source resulted in sludge bulking and a large amount of sludge
loss. With a low C/P ratio, the phosphorus removal performance increased by 2.3 times
when the sludge reflux ratio decreased from 25% to 12.5%. However, the phosphorus removal
performance declined when reducing it to 0. The temperature experiment results showed
that the phosphorous removal efficiency of the system remained stable, above 90%, in the
low temperature system (14℃±1℃). However, the phosphorous removal
efficiency of a shortcut nitrification system at high temperature
(27℃±1℃) was only 14.1%, suggesting that a low temperature was
beneficial for removing phosphorous. It was observed from the batch tests that the sludge
at room temperature could utilize dissolved oxygen, nitrate, and nitrite as electron
acceptors to take up phosphate. The sludge in the low temperature system could use both
dissolved oxygen and nitrate as the electron acceptors. However, the sludge in the high
temperature system could only use dissolved oxygen as the electron acceptors to take up
phosphate. In addition, it was also found that sludge under starvation conditions
resulting from short-term idling of the system favored phosphorus removal.<br/> ©
2017, Science Press. All right reserved.
Number of references:22
Main heading:Dissolved oxygen
Controlled terms:Dissolution - Efficiency - Nitrates - Phosphorus - Sewage sludge -
Temperature - Wastewater treatment
Uncontrolled terms:COD/TP ratio - Cyclic activated sludge technology - Domestic
wastewater - High-temperature systems - Reflux ratio - Removal efficiencies - Shortcut
nitrification - Starvation conditions
Classification code:452.2 Sewage Treatment - 452.4 Industrial Wastes Treatment and
Disposal - 641.1 Thermodynamics - 802.3 Chemical Operations - 804 Chemical Products
Generally - 804.2 Inorganic Compounds - 913.1 Production Engineering
Numerical data indexing:Percentage 1.41e+01%, Percentage 1.50e+01% to 9.56e+01%,
Percentage 2.50e+01% to 1.25e+01%, Percentage 5.14e+01%, Percentage 9.00e+01%
DOI:10.13227/j.hjkx.201705206
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 100>
Accession number:20181705054150
Title:Influence of ENSO Events on the Hydrogen (δ<sup>2</sup>H) and Oxygen
(δ<sup>18</sup>O) Isotopic Values of Precipitation in Shanghai
Authors:Dong, Xiao-Fang (1); Yang, Hua-Wei (1); Zhang, Luan (1); Zhu, Zhi-Peng (1); Yang,
Yan (1); Zheng, Xiang-Min (1); Zhou, Li-Min (1)
Author affiliation:(1) Key Laboratory of Geographic Information Science, School of
Geographical Sciences, East China Normal University, Shanghai; 200241, China
Corresponding author:Zhou, Li-Min(lmzhou@geo.ecnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:4991-5003
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:An analysis of the effect of ENSO events with different strengths on the
isotopic composition of precipitation is conducted based on test data for 206
precipitation samples collected from January 2012 to February 2017 in Shanghai coupled
with the archives for Nanjing, Wuhan, Fuzhou, and Hong Kong from 1961 to 2012 from the
Global Network of Isotopes in Precipitation (GNIP) database. During the research periods,
the δD and δ<sup>18</sup>O values in precipitation are lower in summer and
autumn but higher in winter and spring. The slope and intercept of the atmospheric
precipitation lines during El Niño events are larger than during other times,
while anti-temperature, precipitation amount, and vapor pressure effects are more
significant than during La Niña events. The δ<sup>18</sup>O and deuterium
excess values (value of d) of rainfall in Shanghai during El Niño and La
Niña events of varied strengths have an obvious negative correlation with the
oceanic Niño index (ONI), sea surface temperature anomaly (SSTA), and the extreme
and cumulative values of ONI. Moreover, ENSO events are closely intertwined with the
correlation between δ<sup>18</sup>O isotopic value in precipitation, ONI, and
SSTA.<br/> © 2017, Science Press. All right reserved.
Number of references:29
Main heading:Oceanography
Controlled terms:Deuterium - Hydrogen - Oxygen - Pressure effects - Surface waters
Uncontrolled terms:Atmospheric precipitation - Deuterium excess - ENSO events - Isotopic
composition - Negative correlation - Precipitation samples - Sea surface temperature
anomalies - Shanghai
Classification code:444.1 Surface Water - 471.1 Oceanography, General - 804 Chemical
Products Generally - 931.1 Mechanics
DOI:10.13227/j.hjkx.201705190
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 101>
Accession number:20181705046654
Title:Development of a Non-Road Mobile Source Emissions Inventory for Tianjin
Authors:Zhang, Yi (1, 2); Michel, Andre (3); Li, Dong (4); Zhang, Xin (5); Wu, Lin (1,
2); Zhang, Yan-Jie (1, 2); Ma, Chao (1, 2); Zou, Chao (1, 2); Mao, Hong-Jun (1, 2)
Author affiliation:(1) College of Environmental Science & Engineering, Nankai
University, Tianjin; 300071, China; (2) Centre for Urban Transport Emission Research,
Nankai University, Tianjin; 300071, China; (3) French Institute of Science and Technology
for Transport, Spatial Planning, Development and Networks (IFSTTAR), Lyon; 690675,
France; (4) Tianjin Vehicle Emission Control Center, Tianjin; 300191, China; (5) Xingang
Maritime Safety Administration, Tianjin; 300456, China
Corresponding author:Mao, Hong-Jun(hongjun_mao@hotmail.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4447-4453
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Based on the collected data of activity level in 2015, a non-road mobile source
emissions inventory for Tianjin was developed following the recommended method from the
Compilation Guide for a Vehicle Emissions Inventory (trial edition) released by the
Ministry of Environmental Protection. In 2015, the emissions of CO, hydrocarbons (HC),
nitrogen oxides (NO<inf>x</inf>), particulate matter (PM) and SO<inf>2</inf>from non-road
mobile sources in Tianjin were 6.15×10<sup>3</sup>t, 2.45×10<sup>3</sup>t,
2.90×10<sup>4</sup>t, 1.45×10<sup>3</sup>t, and 1.37×10<sup>4</sup>t,
respectively. Marine sources were identified as the largest non-road mobile source
contributor accounting for 73.66% of total emissions, followed by non-road mobile
machinery (21.66%). Emissions from civil aircraft and locomotives were relatively lower.
Generally, emissions from non-road mobile sources increase from March (spring) to
November and decrease from the beginning and the end of the year (winter). Emissions are
mainly distributed in suburban districts where there is flourishing agriculture, downtown
areas with dense populations, urban construction areas, ports, railway lines, and
airports. Uncertainty in the inventory results is mainly due to the lack of key data,
such as local emission factors and actual activity levels.<br/> © 2017, Science
Press. All right reserved.
Number of references:19
Main heading:Roads and streets
Controlled terms:Engines - Fighter aircraft - Marine engineering - Mobile power plants -
Nitrogen oxides - Uncertainty analysis
Uncontrolled terms:Activity levels - Emission inventories - Mobile source emissions -
Mobile sources - Non-road mobile machineries - Particulate Matter - Spatiotemporal
distributions - Urban construction
Classification code:406.2 Roads and Streets - 652.1.2 Military Aircraft - 675 Marine
Engineering - 804.2 Inorganic Compounds - 922.1 Probability Theory
Numerical data indexing:Percentage 2.17e+01%, Percentage 7.37e+01%
DOI:10.13227/j.hjkx.201704268
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 102>
Accession number:20181705054177
Title:Effect of Seeding Single/Mixed Sludge on Rapid Start-up of an ANAMMOX Reactor
Authors:Zhang, Ze-Wen (1); Li, Dong (1); Zhang, Jie (1, 2); Guo, Yue-Zhou (1); Li, Shuai
(1, 2)
Author affiliation:(1) Key Laboratory of Beijing for Water Quality Science and Water
Environment Recovery Engineering, Beijing University of Technology, Beijing; 100124,
China; (2) State Key Laboratory of Urban Water Resource and Environment, Harbin Institute
of Technology, Harbin; 150090, China
Corresponding author:Li, Dong(lidong2006@bjut.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5215-5221
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:The experiment explored the effect of different seeding sludge on the rapid
start-up of an anaerobic ammonium oxidation (ANAMMOX) reactor by seeding a single type of
denitrified granular sludge and a mixed sludge composed of denitrified granular sludge
and aerobic nitrification sludge (the volume ratio of the mixed sludge was 2:1) in two
sequencing batch reactors (SBR), R0 and R1, respectively. The results indicated that R0
was started up successfully on day 64 with a nitrogen removal rate (NRR) of 0.26
kg·(m<sup>3</sup>·d)<sup>-1</sup>, while R1 was started up by day 47 with a
NRR of 0.30 kg·(m<sup>3</sup>·d)<sup>-1</sup>, which was shorter than R0 by
17 d. In the enrichment stage, reddish sludge appeared in R1, and the characteristics of
anaerobic ammonium oxidation of the system were more obvious than in R0. After the
reactor was started up successfully, the stoichiometric ratio of R0 was 1.20 and 0.34,
respectively, and the stoichiometric ratio of R1 was 1.26 and 0.21, which was closer to
the theoretical values of 1.32 and 0.26. The mixed liquor suspended solids (MLSS) and
mixed liquor volatile suspended solids (MLVSS) of R0 were restored to 51% (4.2
g·L<sup>-1</sup>) and 38% (2.3 g·L<sup>-1</sup>)of the initial seeding
sludge, respectively, while the MLSS and MLVSS of R1 were restored to 54% (4.4
g·L<sup>-1</sup>) and 42% (2.6 g·L<sup>-1</sup>), which was higher than R0.
It can be speculated that the proliferation rate of AnAOB in R1 was faster than in R0.
Seeding mixed sludge can accelerate the start-up process of anaerobic ammonium oxidation
with more stable N-removal performance.<br/> © 2017, Science Press. All right
reserved.
Number of references:20
Main heading:Nitrogen removal
Controlled terms:Batch reactors - Denitrification - Granular materials - Oxidation -
Restoration - Wastewater treatment
Uncontrolled terms:Anaerobic ammonium oxidation - Mixed liquor suspended solids - Mixed
liquor volatile suspended solids - Mixed sludge - MLSS, MLVSS - Nitrogen removal rates -
Sequencing batch reactors - Stoichiometric ratio
Classification code:452.4 Industrial Wastes Treatment and Disposal - 802.1 Chemical
Plants and Equipment - 802.2 Chemical Reactions - 951 Materials Science
Numerical data indexing:Mass_Density 2.30e+00kg/m3, Mass_Density 2.60e+00kg/m3,
Mass_Density 4.20e+00kg/m3, Mass_Density 4.40e+00kg/m3
DOI:10.13227/j.hjkx.201705289
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 103>
Accession number:20181705046695
Title:Spatial Distribution of Soil Particles and Heavy Metals Under Different
Psammophilic Shrubs in the Ulan Buh Desert
Authors:Dai, Yu-Jie (1); Guo, Jian-Ying (2); Dong, Zhi (1); Li, Jin-Rong (2); Li, Hong-Li
(1)
Author affiliation:(1) Shandong Provincial Key Laboratory of Soil Erosion and Ecological
Restoration, College of Forestry, Shandong Agricultural University, Tai'an; 271018,
China; (2) Institute of Water Resources for Pastoral Area of Ministry of Water Resources,
Hohhot; 010020, China
Corresponding author:Dong, Zhi(nmgdz@163.com)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4809-4818
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Aeolian sandy soil was collected at depths of 0 to 100 cm at intervals of 0-10,
>10-20, >20-30, >30-40, >40-60, >60-80, and >80-100 cm from under the
cover of psammophilous shrubs Ammopiptanthus mongolicus, Hedysarum scoparium, Oxytropis
aciphylla, Nitraria tangutorum and Haloxylon ammodendron and from a mobile dune in the
Ulan Buh Desert. Multi-fractal theory was used to determine the soil particle size
distribution (PSD), which measured the fractions of ω(Mn), ω(Zn), ω
(Cr), ω(Cu), ω(Pb), ω(Ni), ω(As), and ω(Cd), as well as
their distribution status in the laboratory and analyzed correlations between the PSD and
heavy metal content to identify the relationship between soil structure and heavy metal
pollution. This result shows that a range of different types of shrubs can increase the
distribution of fine soil particles, and specifically Ammopiptanthus mongolicus and
Hedysarum scoparium can increase range, heterogeneity and degree of dispersion of the
PSD. The heavy metal content in the soil under the different shrubs is ranked as ω
(Mn)>ω(Zn)>ω(Cr)>ω(Cu)>ω(Pb)>ω(Ni)
>ω(As)>ω(Cd). In the first 10 cm of the soil under the shrubs, the
concentration of all heavy metals are higher than samples from the mobile dune except for
Cr and Cu. Average value of ω(Mn) and ω(Cd) is 354.899 and 1.429
mg·kg<sup>-1</sup>under Ammopiptanthus mongolicus and Hedysarum scoparium
respectively. Concentrations of Mn and Cd under Ammopiptanthus mongolicus and Hedysarum
scoparium shrubs are significantly higher than those of mobile dune (P<0.05), and the
concentration of both is significantly various between each soil layers (P<0.05). The
highest value for ω(Mn) is in soil layer between 30 and 40 cm below the surface and
the highest for ω(Cd) appears between 10 and 20 cm below the surface. The average
ω(Pb) under Hedysarum scoparium is 13.556 mg·kg<sup>-1</sup>which is the
highest among all the shrubs, exceeding 3.24% under Ammopiptanthus mongolicus and higher
than samples from mobile dune. However, average ω(As) under Hedysarum scoparium is
exceeded 0.37% under Ammopiptanthus mongolicus but still higher than samples from mobile
dune. The grain size of φ(silt) and φ(medium coarse sand) are determining factors
for heavy metal concentrations in fine and coarse particles of aeolian sandy soil. Heavy
metal measurements all positively correlate with φ(silt) and φ(clay), however,
they negatively correlate with φ(medium coarse sand), except for ω(Cr). The
correlation coefficients between heavy metal contents and the multifractal parameters are
similar for φ(clay), φ(silt), and φ(medium coarse sand). Therefore,
multifractal parameters can describe the correlation between heavy metals and their
determinant soil grain size. This study shows that, Ammopiptanthus mongolicus and
Hedysarum scoparium can entrap and deposit fine particles from the sand flow to surface
soil layers around shrubs and improve the condition of PSDs for different soil layers
with respect to heavy metals. Hence, in aeolian sandy soil these concentrations are
higher than for mobile dunes after planting Ammopiptanthus mongolicus and Hedysarum
scoparium. Therefore both should be used to promote good soil structure of particular
areas to entrap and in-situ control heavy metals to decrease heavy metal pollution in
downwind cities.<br/> © 2017, Science Press. All right reserved.
Number of references:33
Main heading:Soil pollution
Controlled terms:Fractals - Grain size and shape - Heavy metals - Landforms - Light
transmission - Particle size - Particle size analysis - Sand - Silt - Size distribution
- Soil pollution control
Uncontrolled terms:Correlation coefficient - Haloxylon ammodendron - Heavy metal
concentration - Multifractal parameters - Multifractal theory - Psammophilous shrubs -
Soil particle size - Ulan Buh Desert
Classification code:481.1 Geology - 483.1 Soils and Soil Mechanics - 531 Metallurgy
and Metallography - 741.1 Light/Optics - 921 Mathematics - 922.2 Mathematical
Statistics - 951 Materials Science
Numerical data indexing:Percentage 3.24e+00%, Percentage 3.70e-01%, Size 0.00e+00m to
1.00e+00m, Size 1.00e-01m, Size 1.00e-01m to 2.00e-01m, Size 3.00e-01m to 4.00e-01m
DOI:10.13227/j.hjkx.201704135
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 104>
Accession number:20181705046665
Title:Vertical Distribution Characteristics of Fe and Mn in Subtropical Reservoirs During
Summer
Authors:Yang, Si-Yuan (1); Zhao, Jian (3); Yu, Hua-Zhang (3); Peng, Liang (1, 2); Xiao,
Li-Juan (1, 2)
Author affiliation:(1) Institute of Hydrobiology, Jinan University, Guangzhou; 510632,
China; (2) Guangdong Center for Control and Prevention of Reservoir Cyanobacterial
Blooms, Guangzhou; 510632, China; (3) Shantou Suboffice, Hydrological Bureau of Guangdong
Province, Shantou; 515041, China
Corresponding author:Xiao, Li-Juan(tljxiao@jnu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4546-4552
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Iron (Fe) and manganese (Mn) are redox-sensitive elements that are both
important chemical indicators of water quality. To study their vertical distribution
characteristics in south-subtropical reservoirs during summer, Fe and Mn concentrations
in the water column, as well as the physical and chemical conditions of the water, were
investigated in the lacustrine zones of nine reservoirs in the eastern of Guangdong
Province, in July 2016. These results showed that Fe and Mn exhibited a strong
concentration gradient in deep reservoirs due to thermal stratification. The total Fe
(TFe), total Mn (TMn), dissolved Fe (DFe), and dissolved Mn (DMn) concentrations in the
surface water are significantly lower than in these in bottom zones (TFe, F=6.708,
P=0.032; TMn, F=9.720, P=0.014; DFe, F=8.129, P=0.029; DMn, F=11.125, P=0.016). The
average concentrations of TFe and TMn are 0.399 mg·L<sup>-1</sup>and 0.422
mg·L<sup>-1</sup>, respectively at the bottom five of the deep reservoirs, and the
dissolved ions accounted for more than 70% of this concentration. In shallow reservoirs
without thermal stratification, TFe, TMn, DFe and DMn concentrations in surface water are
lower than those measured at bottom of the reservoir, no significant difference was
detected (TFe, F=0.135, P=0.726; TMn, F=0, P=1; DFe, F=0.006, P=0.943; DMn, F=0.007,
P=0.936). The average concentrations of TFe and TMn are 0.110 mg·L<sup>-1</sup>and
0.089 mg·L<sup>-1</sup>, respectively at the bottom of the four shallow
reservoirs, and they were present predominantly in particulate form. The concentrations
of TFe and DFe correlated significantly (P<0.05) with the dissolved oxygen (DO)
concentration, pH and depth, but did not significantly correlate with TN or TP
concentration in the deep reservoirs. The gradient distributions of DO and pH levels is
critical to the gradient distribution of Fe and Mn in deep reservoirs because of water
stratification. Low DO concentrations and acidic conditions in these areas contributed to
the release of Fe and Mn from sediment and result in high dissociation of these elements
in the bottom of deep reservoirs. Simultaneously, high concentrations of Fe and Mn at the
bottom of reservoirs may also attribute to the characteristic red soil of this region.
The results from this study imply that the high concentrations of Fe and Mn common in the
bottom of deep reservoirs is associated with the stable stratification of these
reservoirs in the summer. The concentrations of Fe and Mn may be exceed water standards
when deep water is taken for public water provision. The problem may be avoided with
surface water supplying.<br/> © 2017, Science Press. All right reserved.
Number of references:22
Main heading:Reservoirs (water)
Controlled terms:Biochemical oxygen demand - Dissolution - Dissolved oxygen - Indicators
(chemical) - Iron - Manganese - Manganese removal (water treatment) - Petroleum
reservoirs - Soils - Surface waters - Thermal stratification - Tropics - Water quality
Uncontrolled terms:Average concentration - Concentration gradients - Dissolved oxygen
concentrations - Gradient distributions - Stable stratification - Subtropical - Summer -
Vertical distributions
Classification code:441.2 Reservoirs - 443 Meteorology - 444.1 Surface Water - 445.1
Water Treatment Techniques - 445.2 Water Analysis - 483.1 Soils and Soil Mechanics -
512.1.1 Oil Fields - 543.2 Manganese and Alloys - 545.1 Iron - 801 Chemistry - 802.3
Chemical Operations - 804 Chemical Products Generally
Numerical data indexing:Mass_Density 1.10e-04kg/m3, Mass_Density 3.99e-04kg/m3,
Mass_Density 4.22e-04kg/m3, Mass_Density 8.90e-05kg/m3, Percentage 7.00e+01%
DOI:10.13227/j.hjkx.201704233
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 105>
Accession number:20181705054157
Title:Dynamics of the Water Quality in a Broad-leaf Evergreen Forest at Different Spatial
Levels on Jinyun Mountain
Authors:Ma, Ming (1); Sun, Tao (1); Li, Ding-Kai (3); Wang, Ding-Yong (1, 2)
Author affiliation:(1) College of Resource and Environment, Southwest University,
Chongqing; 400715, China; (2) Chongqing Key Laboratory of Agricultural Resources and
Environment, Chongqing; 400716, China; (3) Simian Mountain Forest Resources
Administration, Jiangjin District, Chongqing; 400296, China
Corresponding author:Wang, Ding-Yong(dywang@swu.edu.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:12
Issue date:December 15, 2017
Publication year:2017
Pages:5056-5062
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:A typical forest stand on the subtropical Jinyun Mountain in China was selected
to investigate water quality and interception characteristics for several important ions
at different levels in the subtropical forest ecosystem. Based on field and laboratory
experiments, the effect of precipitation, throughfall, litterfall, and soil percolation
on water quality and ionic interception were investigated from September 2013 to August
2014. Results indicated that the rainfall on Jinyun Mountain was obviously acidic, with
an average pH of 4.75. The soil and canopy can elevate the pH of rainfall, while the soil
had a greater capability for adjusting pH than did the forest canopy. In addition, the
concentrations of NH<inf>4</inf><sup>+</sup>, SO<inf>4</inf><sup>2-</sup>,
PO<inf>4</inf><sup>3-</sup>, Mg<sup>2+</sup>, Ca<sup>2+</sup>, and K<sup>+</sup>in the
litterfall increased with litterfall tissue disintegration, while the other ions
decreased. Moreover, functional groups and colloids in the soil can bind or neutralize
many ions, such as NO<inf>3</inf><sup>-</sup>, SO<inf>4</inf><sup>2-</sup>,
NH<inf>4</inf><sup>+</sup>, PO<inf>4</inf><sup>3-</sup>, K<sup>+</sup>, and
Mg<sup>2+</sup>. However, some ions were released from the soil by erosion from acid rain
over a long time. Generally, the forest ecosystem is a sink for ions found in
precipitation with diverse functions for different layers, and the forest canopy has the
highest interception capacity for the ions found in precipitation.<br/> © 2017,
Science Press. All right reserved.
Number of references:24
Main heading:Forestry
Controlled terms:Acid rain - Deposition - Ecosystems - Ions - Landforms - Satellite
interception - Soil moisture - Solvents - Water quality
Uncontrolled terms:Different layers - Evergreen forests - Forest canopies - Forest
ecosystem - Jinyun mountains - Laboratory experiments - Spatial levels - Subtropical
forests
Classification code:445.2 Water Analysis - 451.1 Air Pollution Sources - 454.3 Ecology
and Ecosystems - 481.1 Geology - 483.1 Soils and Soil Mechanics - 655.2 Satellites -
802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals
DOI:10.13227/j.hjkx.201704208
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 106>
Accession number:20181705046697
Title:Various effects on the Abundance and Composition of Arbuscular Mycorrhizal Fungal
Communities in Soils in Karst Shrub Ecosystems
Authors:Liang, Yue-Ming (1, 2); Su, Yi-Rong (1); He, Xun-Yang (1); Chen, Xiang-Bi (1);
Hu, Ya-Jun (1)
Author affiliation:(1) Key Laboratory of Agro-ecological Processes in Subtropical Region,
Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha; 410125,
China; (2) Key Laboratory of Karst Dynamics, Ministry of Land and Resources & Guangxi
Zhuangzu Autonomy Region, Institute of Karst Geology, Chinese Academy of Geological
Sciences, Guilin; 541000, China
Corresponding author:Su, Yi-Rong(yrsu@isa.ac.cn)
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4828-4835
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:Slope position is a key factor used in the restoration of vegetation in degraded
karst ecosystems, and arbuscular mycorrhizal fungi (AMF) play an important role in
improving this plant growth. However, little information is available regarding the
effects of slope position on arbuscular mycorrhizal fungi. To test whether these fungal
communities are impacted by slope position, the abundance, and composition of soil, AMF
communities along the slope position were analyzed through terminal restriction fragment
length polymorphism (T-RFLP) and real-time fluorescence-based quantitative polymerase
chain reaction (real-time PCR). The diversity, richness, and evenness of plant species
were evaluated through field surveys and soil properties were also measured. The results
show that content of carbon, nitrogen, and phosphorus in the soil are different along the
slope, and the trends identified were that the upper slope position≈middle slope
position>lower slope position. The trend for AMF abundance was identified as upper
slope position ≈ middle slope position<lower slope position. The available
phosphorus content in the soil correlated significantly with the AMF abundance. A
redundancy analysis showed that the structure of soil, AMF, and plant community
compositions differed along the slope. The plant evenness index was shown to
significantly contribute to the distribution of the AMF community structure, while the
total nitrogen and total organic carbon content of the soil had a significant effect on
the plant community structure. These results indicate that the interaction effects of
soil nutrients and plant community structures on the soil AMF community structures
suggest micro-morphology should be taken into account when AMF is used to restore
vegetation in karst regions.<br/> © 2017, Science Press. All right reserved.
Number of references:45
Main heading:Soil testing
Controlled terms:Ecosystems - Fungi - Landforms - Nitrogen - Organic carbon - Phosphorus
- Polymerase chain reaction - Restoration - Soils - Vegetation
Uncontrolled terms:Arbuscular mycorrhizal - Arbuscular mycorrhizal fungi - Community
structures - Karst - Quantitative polymerase chain reaction - Slope positions - Terminal
restriction fragment length polymorphisms - Total organic carbon content
Classification code:454.3 Ecology and Ecosystems - 481.1 Geology - 483.1 Soils and
Soil Mechanics - 801.2 Biochemistry - 804 Chemical Products Generally - 804.1 Organic
Compounds
DOI:10.13227/j.hjkx.201704153
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
<RECORD 107>
Accession number:20181705046676
Title:Effect of the Flow Patterns of Main-stream Reactors on the Efficiency of
Nitrification Enhancement with Bioaugmentation
Authors:Yu, Li-Fang (1); Du, Qian-Qian (1); Zhang, Ru (1); Yang, Xiu-Ling (1); Li, Ren
(1); Hua, Si-Si (1); Feng, Yun-Tang (2)
Author affiliation:(1) School of Environmental & Municipal Engineering, Xi'an
University of Architecture and Technology, Xi'an; 710055, China; (2) Zhongshan Chunxing
Construction Technology Co., Ltd., Zhongshan; 528400, China
Source title:Huanjing Kexue/Environmental Science
Abbreviated source title:Huanjing Kexue
Volume:38
Issue:11
Issue date:November 15, 2017
Publication year:2017
Pages:4641-4647
Language:Chinese
ISSN:02503301
CODEN:HCKHDV
Document type:Article in Press
Publisher:Science Press
Abstract:A nitrifying sequencing batch reactor (SBR) and continuous stirred-tank reactor
(CSTR) were operated at 15℃ under the same conditions to investigate the effect of
two typical flow patterns (plug flow and complete mixing) on the efficiency of
nitrification enhancement. The results show that, during bioaugmentation, the ammonia
utilized rate(AUR)and nitrite utilized rate(NUR)in the SBR were 2.34 and 2.39 times of
that before bioaugmentation, and after bioaugmentation ceased, the AUR and NUR slightly
decreased to 2.01 and 1.78 times of that before bioaugmentation. Meanwhile, the AUR and
NUR in the CSTR were 2.63 and 2.44 times that before bioaugmentation, and after
bioaugmentation ceased, the AUR and NUR decreased to 1.48 and 1.31 times that before
bioaugmentation. Fluorescence In-Situ Hybridization (FISH) results showed that during
bioaugmentation, the ammonia oxidizing bacteria (AOB) and nitrite oxidizing bacteria
(NOB) in the SBR were 2.67 and 2.71 times of that before bioaugmentation, and after
bioaugmentation ceased, the AUR and NUR slightly decreased to 2.14 and 1.95 times that
before bioaugmentation. Meanwhile, the AUR and NUR in the CSTR were 2.91 and 1.77 times
of that before bioaugmentation, and after bioaugmentation ceased, the AUR and NUR
decreased to 1.25 and 1.50 times of that before bioaugmentation. Therefore, the
efficiency of nitrification enhancement was similar between the two types of flow
patterns during bioaugmentation, but the seeded nitrifiers were much more vulnerable to
wash out in the CSTR than that in the SBR due to r/K selectivity of the flow
patterns.<br/> © 2017, Science Press. All right reserved.
Number of references:26
Main heading:Flow patterns
Controlled terms:Ammonia - Bacteria - Batch reactors - Efficiency - Fluorescence
microscopy - Indium compounds - Nitrification
Uncontrolled terms:Bio-augmentation - Community structures - Nitrification performance -
Nitrifiers - R/K-strategists
Classification code:631.1 Fluid Flow, General - 802.1 Chemical Plants and Equipment -
802.2 Chemical Reactions - 804.2 Inorganic Compounds - 913.1 Production Engineering -
931.4 Quantum Theory; Quantum Mechanics
DOI:10.13227/j.hjkx.201704272
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
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