| 模拟电镀污泥阴离子浸出液对氧化亚铁硫杆菌活性的影响 |
| 摘要点击 1680 全文点击 953 投稿时间：2013-07-22 修订日期：2013-09-22 |
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| 中文关键词 氧化亚铁硫杆菌 亚铁 活性 表观呼吸速率 电镀污泥阴离子浸出液 |
| 英文关键词 Acidithiobacillus ferrooxidans ferrous bioactivity apparent respiratory rate simulated inorganic anions leaching solution of electroplating sludge |
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| 中文摘要 |
| 利用课题组分离得到的氧化亚铁硫杆菌WZ-1（GenBank序列登录号：JQ968461）研究电镀污泥浸出液中无机阴离子对WZ-1活性的影响，考察了Cl-、NO3-、F-这3种单一阴离子以及4种不同模拟电镀污泥阴离子浸出液对WZ-1 Fe2+氧化活性和表观呼吸速率的影响，结果表明菌株在接种量为6.7%、初始pH 2.0、温度30℃、转速150 r·min-1的条件下，浓度分别为5.0 g·L-1、1.0 g·L-1的Cl-、NO3-对WZ-1的活性没有影响；WZ-1对Cl-、NO3-、F-的最大耐受浓度分别为10.0 g·L-1、5 g·L-1、25.0 mg·L-1；4种模拟电镀污泥阴离子浸出液对WZ-1活性的影响有明显差异，强弱顺序为：Cl-/NO3-/F-≥NO3-/F->Cl-/F->Cl-/NO3-. |
| 英文摘要 |
| An Acidithiobacillus ferrooxidans strain WZ-1 (GenBank sequence number: JQ968461) was used as the research object. The effects of Cl-, NO3-, F- and 4 kinds of simulated inorganic anions leaching solutions of electroplating sludge on the bioactivity of Fe2+ oxidation and apparent respiratory rate of WZ-1 were investigated. The results showed that Cl-, NO3- didn't have any influence on the bioactivity of WZ-1 at concentrations of 5.0 g·L-1, 1.0 g·L-1, respectively. WZ-1 showed tolerance to high levels of Cl- and NO3-(about 10.0 g·L-1, 5.0 g·L-1, respectively), but it had lower tolerance to F- (25 mg·L-1). Different kinds of simulated inorganic anions leaching solutions of electroplating sludge had significant differences in terms of their effects on bioactivity of WZ-1 with a sequence of Cl-/NO3-/F-≥NO3-/F->Cl-/F->Cl-/NO3-. |
