腐殖酸促进氯苯类物质厌氧还原脱氯研究进展  

Research progress on humic acid promoting anaerobic reduction dechlorination of chlorobenzenes

作　　者：胡妍玢[1] 李东阳[1,2] 田蕴 安喆 李琦 张萌[1] 杨天学[1] HU Yan-fen;LI Dong-yang;TIAN Yun;AN Zhe;LI Qi;ZHANG Meng;YANG Tian-xue(State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;School of Environmental and Chemical Engineering,Shanghai University,Shanghai 200444,China;Division of Environmental Law Enforcement Research,Appraisal Center for Environment&Engineering Ministry of Ecology&Environment,Beijing 100012,China).)

机构地区：[1]中国环境科学研究院环境基准与风险评估国家重点实验室,北京100012 [2]上海大学,环境与化学工程学院,上海200044 [3]生态环境部环境工程评估中心执法部,北京100012

出　　处：《环境生态学》2019年第2期85-90,共6页Environmental Ecology

摘　　要：氯苯类化合物(CBs)具有持久性和高生物毒性等环境危害,六氯苯(Hexachlorobenzene,HCB)为典型CBs之一,广泛存在于垃圾填埋场、湖泊底泥等厌氧环境中,对人类健康造成危害。研究表明厌氧条件下CBs物质能发生还原脱氯现象,且厌氧环境中存在的腐殖酸(humic acids,HA)能促进氯代物降解。通过分析HCB还原脱氯机理、HA氧化还原特性,以及厌氧条件下HA对氯苯类物质还原脱氯作用、腐殖酸还原微生物还原机制,以期为实现源头修复填埋场等厌氧环境中CBs类化合物污染环境提供调控原理。Chlorobenzene compounds(CBs)are environmental hazards with persistence and high biological toxicity.HCB is one of the typical CBs,it is widely used in anaerobic environments such as landfills and lake sediments which cause harm to human health.Studies have shown that CBs can undergo reductive dechlorination under anaerobic conditions,and humic acid(HA)in anaerobic environment can promote the degradation of chlorinated compounds.In this paper,the dechlorination mechanism of HCB,HA redox characteristics,the mechanism of HA on HCB reduction dechlorination under anaerobic conditions,and the reduction mechanism of HA reduction microorganisms were analyzed,which provided a regulation principle for remediation CBs environmental pollution in anaerobic environments such as source-controlled landfills.

关 键 词：腐殖酸 氯苯 厌氧脱氯 

分 类 号：X799.3[环境科学与工程—环境工程]