| 有机物与温度对壬基酚聚氧乙烯醚厌氧降解影响的研究 |
| 摘要点击 3279 全文点击 2848 投稿时间：2007-09-18 修订日期：2007-12-04 |
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| 中文关键词 壬基酚聚氧乙烯醚 产甲烷 反硝化 反硫化 有机物 温度 |
| 英文关键词 nonylphenol polyethoxylates methanogenesis denitrification desulfuration organic matters temperature |
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| 中文摘要 |
| 研究了在3种不同还原条件（产甲烷、反硝化、反硫化）下，壬基酚聚氧乙烯醚（NPEOs）的降解特性及有机物和温度对NPEOs厌氧生物降解效果的影响.结果表明，NP9EO 在3种不同还原条件下能够很好地降解.易降解有机物葡萄糖和乙酸钠会抑制NP9EO的厌氧生物降解，酵母粉则可促进NP9EO的厌氧生物降解.在15～35℃ 的温度范围内，与反应速率系数k相关的产甲烷、反硝化、反硫化反应的温度系数u值分别为19.93、 23.13和27.00 kJ/mol .说明在15～35℃的温度范围内，NP9EO生物降解过程中，温度对NP9EO生物降解速率系数的影响为反硫化条件＞反硝化条件＞产甲烷条件.这可为NPEOs污染的生物修复提供理论依据. |
| 英文摘要 |
| The biodegradation of nonylphenol polyethoxylates (NPEOs) was studied under three different reductive conditions (methanogenesis, denitrification, and desulfuration conditions). Effects of organic matter and temperature on the biodegradation of NPEOs were also studied. The results showed that NP9EO could be rapidly biodegraded under three different reductive conditions. Gulcose and sodium acetate could inhibit NP9EO biodegradation while yeast extract could enhance the biodegradation. Temperature coefficients (u), which was relative with rate coefficient (k), under methanogenesis, denitrification, and desulfuration conditions were 19.93 kJ/mol ， 23.13 kJ/mol ， 27.00 kJ/mol respectively, when temperature ranged from 15℃ to 35℃ . The result suggested that the biodegradation rate constant of NP9EO under desulfuration condition was more sensitive to temperature than those of denitrification and methanogenesis treatments. These results could provide useful information on bioremendation of NPEOs contaminants. |
