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以萘为共代谢的芘的好氧生物降解
引用本文:王文静, 陈海, 李博, 杨琦. 以萘为共代谢的芘的好氧生物降解[J]. 环境工程学报, 2016, 10(11): 6332-6336. doi: 10.12030/j.cjee.201506161
作者姓名:王文静  陈海  李博  杨琦
作者单位: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
基金项目: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。

关 键 词:     生物降解   共代谢动力学
收稿时间:2015-11-01

Biodegradation of pyrene using naphthalene as cometabolism substrate
WANG Wenjing, CHEN Hai, LI Bo, YANG Qi. Biodegradation of pyrene using naphthalene as cometabolism substrate[J]. Chinese Journal of Environmental Engineering, 2016, 10(11): 6332-6336. doi: 10.12030/j.cjee.201506161
Authors:WANG Wenjing  CHEN Hai  LI Bo  YANG Qi
Affiliation:1.School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China
Abstract: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.
Keywords:naphthalene  pyrene  biodegradation  cometabolism
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