| 驯化污泥厌氧还原脱氯促进2,4,6-三氯酚矿化及胞外呼吸脱氯途径 |
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| 引用本文： | 宋佳秀,李玲,盛凡凡,郭翠香,张永明,李祖元,王天丽.驯化污泥厌氧还原脱氯促进2,4,6-三氯酚矿化及胞外呼吸脱氯途径[J].环境科学,2015,36(10):3764-3770. |
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| 作者姓名： | 宋佳秀 李玲 盛凡凡 郭翠香 张永明 李祖元 王天丽 |
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| 作者单位： | 上海师范大学生命与环境科学学院, 环境科学与工程系, 上海 200234;上海师范大学生命与环境科学学院, 环境科学与工程系, 上海 200234;上海师范大学生命与环境科学学院, 环境科学与工程系, 上海 200234;上海师范大学生命与环境科学学院, 环境科学与工程系, 上海 200234;上海师范大学生命与环境科学学院, 环境科学与工程系, 上海 200234;上海师范大学生命与环境科学学院, 环境科学与工程系, 上海 200234;上海师范大学生命与环境科学学院, 环境科学与工程系, 上海 200234 |
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| 基金项目： | 国家自然科学基金青年基金项目(51208302);教育部博士点新教师基金项目(20123127120008);上海市教育委员会科研创新项目(12YZ083) |
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| 摘 要： | 厌氧条件下,以乳酸钠为电子供体,2,4,6-三氯酚为电子受体对活性污泥进行驯化,考察了驯化污泥厌氧脱氯的代谢特性.结果发现,污泥可对2,4,6-三氯酚进行高效脱氯,乳酸钠、2,4,6-三氯酚初始浓度为20 mmol·L-1、40~80μmol·L-1时,9~24 h内可实现2,4,6-三氯酚100%初始性降解.中间产物有2,4-二氯酚,但检出浓度较低(4.22μmol·L-1),4-氯酚和苯酚为主要产物.驯化污泥以脱邻位氯(2,4,6-三氯酚,2,4-二氯酚)降解菌为优势种群,对4-氯酚和苯酚的进一步转化有限.厌氧代谢残留物经好氧污泥处理后,4-氯酚(初始浓度33μmol·L-1)2 h实现100%去除.驯化污泥可快速将Fe(Ⅲ)还原为Fe(Ⅱ),并具有较强的腐殖质(AQDS)还原能力,说明驯化污泥中富集了异化铁还原菌.电子介体Fe(Ⅲ)和AQDS]明显地加速了脱氯速率,在电子介体的介导作用下,污泥可同步进行胞外呼吸脱氯.
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| 关 键 词： | 还原脱氯 2 4 6-三氯酚 电子介体 |
| 收稿时间： | 2015/2/25 0:00:00 |
| 修稿时间： | 2015/5/15 0:00:00 |
2,4,6-Trichlorophenol Mineralization Promoted by Anaerobic Reductive Dechlorination of Acclimated Sludge and Extracellular Respiration Dechlorination Pathway |
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| SONG Jia-xiu,LI Ling,SHENG Fan-fan,GUO Cui-xiang,ZHANG Yong-ming,LI Zu-yuan and WANG Tian-li.2,4,6-Trichlorophenol Mineralization Promoted by Anaerobic Reductive Dechlorination of Acclimated Sludge and Extracellular Respiration Dechlorination Pathway[J].Chinese Journal of Environmental Science,2015,36(10):3764-3770. |
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| Authors: | SONG Jia-xiu LI Ling SHENG Fan-fan GUO Cui-xiang ZHANG Yong-ming LI Zu-yuan and WANG Tian-li |
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| Affiliation: | Department of Environmental Science and Engineering, College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200234, China;Department of Environmental Science and Engineering, College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200234, China;Department of Environmental Science and Engineering, College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200234, China;Department of Environmental Science and Engineering, College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200234, China;Department of Environmental Science and Engineering, College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200234, China;Department of Environmental Science and Engineering, College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200234, China;Department of Environmental Science and Engineering, College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200234, China |
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| Abstract: | |
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| Keywords: | reductive dechlorination 2 4 6-trichlorophenol electron mediator |
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