| 铁还原地下水环境中微生物降解苯和甲苯的碳源
专一性分析 |
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| 引用本文： | 陈亮,刘菲,刘玉龙,董洪忠.铁还原地下水环境中微生物降解苯和甲苯的碳源
专一性分析[J].地学前缘,2010,17(6):47-51. |
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| 作者姓名： | 陈亮 刘菲 刘玉龙 董洪忠 |
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| 作者单位： | 1中国地质大学(北京) 北京市水资源与环境工程重点实验室, 北京 100083;
2中国石油天然气集团公司 安全环保技术研究院, 北京 100085 |
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| 基金项目： | 中国地质大学(北京)基本科研业务费专项资金资助项目(2009PY12); 国家自然科学基金项目(40972162); 水体污染控制与治理科技重大专项“地下水源城市饮用水安全保障共性技术研究与示范”(2009ZX07424-002) |
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| 摘 要： | 文中研究在粒状铁化学还原三氯乙烯渗透反应格栅和生物降解苯和甲苯渗透反应格栅的联合格栅技术中,下游生物降解格栅中铁还原环境下微生物对苯和甲苯的生物降解。通过模拟粒状铁渗透反应格栅下游铁还原环境,主要研究微生物以苯、甲苯作为碳源时,对碳源的专一性。通过批实验发现,对于分别用苯和甲苯培养驯化的微生物,互换碳源后,微生物对2 000.00μg/L苯和甲苯的生物降解半衰期分别由之前的1.0和1.5 d减少到0.7和1.0 d,互换碳源后苯和甲苯的去除率分别增加38%和32%。在粒状铁渗透反应格栅下游生物降解渗透反应格栅中,微生物在铁还原环境下以苯、甲苯作为碳源时对碳源没有专一性,苯和甲苯可以同时被生物降解去除。
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| 关 键 词： | 铁还原环境 苯 甲苯 生物降解 碳源专一性 |
Analysis of carbon source specificity in microbe degradation of benzene and toluene in groundwater under an iron reducing environment |
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| Chen Liang,Liu Fei,Liu Yulong,Dong Hongzhong.Analysis of carbon source specificity in microbe degradation of benzene and toluene in groundwater under an iron reducing environment[J].Earth Science Frontiers,2010,17(6):47-51. |
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| Authors: | Chen Liang Liu Fei Liu Yulong Dong Hongzhong |
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| Institution: | 1Beijing Key Laboratory of Water Resources and Environmental Engineering, China University of Geosciences(Beijing), Beijing 100083, China;
2Research Institute of Safety and Environmental Technology, China National Petroleum Corporation(CNPC), Beijing 100085, China |
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| Abstract: | This study simulated benzene and toluene biodegradation under an iron reducing environment in a downstream biodegradation permeable reactive barrier(Bio-PRB) of a composite permeable reactive barrier which includes an upstream zero-valent permeable reactive barrier(ZVI PRB) that reduces trichloroethene.Microbial specificity to a carbon source was mainly evaluated by batch experiments where benzene and toluene were used as the carbon sources.After exchanging the carbon sources,the biodegradation half-life of... |
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| Keywords: | iron reducing environment benzene toluene biodegradation carbon source specificity |
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