硝基类化合物厌氧还原研究进展  

Anaerobic Reduction of Nitro-aromatic Compounds: A Review

作　　者：黄进刚[1] 陈素素 卢雄雄 HUANG Jingang;CHEN Susu;LU Xiongxiong(School of Materials and Environmental Engineering,Hangzhou Dianzi University,Hangzhou Zhejiang 310018,China)

机构地区：[1]杭州电子科技大学材料与环境工程学院

出　　处：《杭州电子科技大学学报（自然科学版）》2019年第5期67-74,共8页Journal of Hangzhou Dianzi University：Natural Sciences

基　　金：国家自然科学基金资助项目(51408171);中国博士后科学基金资助项目(2018M642438)

摘　　要：硝基类化合物(NACs)是典型的氧化态有机氮,如直排水体将危害生态环境和人畜健康。NACs的生物降解过程一般通过厌氧—好氧过程去除,其中厌氧还原是限速步骤,因此提高NACs的还原速率是其降解过程的关键。在系统识别NACs生物还原关键问题的基础上,从NACs还原酶、电子供体、氧化还原介质(RMs)以及外部电子受体等方面,总结有机碳源或无机电子供体作为共基质时的NACs生物还原特征,分析了RMs介导电子由初级电子供体到最终电子受体(NACs)的转移规律,比较了硝酸盐、硫酸盐等电子受体在NACs还原过程中对电子供体的竞争/协同/耦合作用,为NACs厌氧生物还原研究提供一定指导。Nitro-aromatic compounds(NACs)are typical oxidized organic-nitrogen.The discharge of wastewater containing NACs poses a great threat to both environmental and human health.The biological method,consisting of an anaerobic reduction and a following aerobic oxidation process,is the popularly applied system to treat NACs contained wastewater.In such a treatment system,the reduction of NACs to the corresponding amine derivatives is the rate-limiting step for the overall process.Thus,it is a key issue to improve the NACs reduction for the above treatment system.Upon the careful identification of NACs reduction,the influential factors from nitroreductase,electron donor,redox mediators(RMs)and external electron acceptor were reviewed.It was summarized that organic carbon and other inorganic reductants could be supplied as effective electron donors for the bio-reduction of NACs;the potential role of RMs in shuttling electrons from the primary electron donors to the final electron acceptor was also described.Furthermore,the competition/cooperative/coupling effects of external electron acceptors such as sulfate and nitrate on the bio-reduction process of NACs are compared,which provide some guidance for the research of anaerobic biological reduction of NACs.

关 键 词：硝基类化合物 厌氧还原 电子供体 氧化还原介质 电子受体 

分 类 号：X703.1[环境科学与工程—环境工程]