Treatment of atrazine by integrating photocatalytic and biological processes

doi:10.1016/j.envpol.2004.02.022

CORC > 北京大学 > 城市与环境学院

	Treatment of atrazine by integrating photocatalytic and biological processes
	Chan, C.Y. ; Tao, S. ; Dawson, R. ; Wong, P.K.
刊名	environmental pollution
	2004
DOI	10.1016/j.envpol.2004.02.022
英文摘要	This research examines the degradation of atrazine by photocatalytic oxidation (PCO) under different experimental conditions. Deisopropylatrazine, deethylatrazine and deethyldeisopropylatrazine were formed as major intermediates based on gas chromatography-mass spectrometry. The reaction mixture was found to be toxic towards two bioassays, i.e. the Microtox ® and amphipods survival tests even when atrazine was completely degraded by PCO within 2h under optimized conditions. The results indicate that adding H2O2 could significantly enhance the degradation of atrazine by PCO. Ammeline, ammelide and cyanuric acid (CA) became the major intermediates/products as detected by high performance liquid chromatography from 6th to the 40th h of PCO treatment. After 72h PCO treatment, only CA was detectable in the reaction mixture. Further degradation of CA was carried out by a newly isolated CA-degrading bacterium, Sphingomonas capsulata. The photochemical pretreatment integrated with microbial degradation lead to the complete degradation and detoxification of atrazine. ? 2004 Elsevier Ltd. All rights reserved.; SCI(E); EI; 43; 1; 45-54; 131
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/254403]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Chan, C.Y.,Tao, S.,Dawson, R.,et al. Treatment of atrazine by integrating photocatalytic and biological processes[J]. environmental pollution,2004.
APA	Chan, C.Y.,Tao, S.,Dawson, R.,&Wong, P.K..(2004).Treatment of atrazine by integrating photocatalytic and biological processes.environmental pollution.
MLA	Chan, C.Y.,et al."Treatment of atrazine by integrating photocatalytic and biological processes".environmental pollution (2004).