以萘为共代谢的芘的好氧生物降解  

Biodegradation of pyrene using naphthalene as cometabolism substrate

作　　者：王文静[1] 陈海[1] 李博[1] 杨琦[1] WANG Wenjing CHEN Hai LI Bo YANG Qi(School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China)

机构地区：[1]中国地质大学(北京)水资源与环境学院水资源与环境工程重点实验室,北京100083

出　　处：《环境工程学报》2016年第11期6332-6336,共5页Chinese Journal of Environmental Engineering

基　　金：北京市产学研项目(51900265005);国家水体污染控制与治理科技重大专项(2015ZX07406005;2009ZX07207-008;2009ZX07419-002;2009ZX07207-001);中央高校基本科研业务费专项(2652013101;2652013086;2652013087;2652015118;2652015005;2652015006);科学仪器基础研究专款资助项目(2012YQ060115)

摘　　要：为更好有效去除地下水中的常见污染物芘,以萘为降解基质,利用苍白杆菌降解芘,并对反应影响因素进行了研究,模拟了反应动力学。结果表明:浓度为100 mg·L^(-1)、pH=7、25℃、萘的初始反应24 h后萘的去除率达到99.84%,芘的去除率达到37.5%。另外,菌株在萘初始浓度不同的条件下对萘的降解符合一级动力学,对芘的降解符合二级动力学。结果表明苍白杆菌在去除地下水中的萘和芘方面具有很大前景。To find a more effective way of removing common contaminants from groundwater,we studied pyrene degradation by Pale coli,by using naphthalene as a co-metabolite. We also analyzed the underlying reaction kinetics. Optimum reaction conditions for the pale coli strain were as follows： initial concentration of naphthalene up to 100 mg·L-1,pH 7,and 25℃. The degradation of naphthalene by pale coli fitted first-order reaction kinetics for different initial concentrations of naphthalene,while pyrene degradation fitted a second-order reaction. Results show that the pale coli strain has great potential in removing naphthalene and pyrene from groundwater.

关 键 词：萘 芘 生物降解 共代谢动力学 

分 类 号：X523[环境科学与工程—环境工程]