Enhanced atrazine removal using membrane bioreactor bioaugmented with genetically engineered microorganism

作     者：Chun LIU Xia HUANG 

作者机构：State Key Joint Laboratory of Environmental Simulation and Pollution ControlDepartment of Environmental Science and EngineeringTsinghua UniversityBeijing 100084China School of Environmental Science and EngineeringHebei University of Science and TechnologyShijiazhuang 050018China 

基　　金：This work was supported by the National Science Fund for Distinguished Young Scholars(Grant No.50725827) 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2008年第2卷第4期

页      码：452-460页

摘      要：Bioaugmentation with genetically engineered microorganisms(GEMs)in a membrane bioreactor(MBR)for enhanced removal of recalcitrant pollutants was *** atrazine-degrading genetically engineered microorganism(GEM)with green fluorescent protein was inoculated into an MBR and the effects of such a bioaugmentation strategy on atrazine removal were *** results show that atrazine removal was improved greatly in the bioaugmented MBR compared with a control *** a start-up period of 6 days,average 94.7%of atrazine was removed in bioaugmentedMBRwhen atrazine concentration of influent was 14.5 mg/*** volumetric removal rates increased linearly followed by atrazine loading increase and the maximum was 65.5 mg/(L?d).No negative effects were found on COD removal although carbon oxidation activity of bioaugmented sludge was lower than that of common *** inoculation,adsorption to sludge flocs was favorable for GEM *** GEM population size initially decreased shortly and then was kept constant at about 104–105 CFU/*** of micro-organisms played an important role in the decay of the GEM *** leakage from MBR was less than 102 CFU/mL initially and was then *** contrast,in a conventionally activated sludge bioreactor(CAS),sludge bulking occurred possibly due to atrazine exposure,resulting in bioaugmentation failure and serious GEM *** MBR was superior to CAS in atrazine bioaugmentation treatment using GEM.

主 题 词：genetically-engineered microorganism(GEM) membrane bioreactor(MBR) atrazine 

学科分类：083002[083002] 0830[工学-生物工程类] 08[工学] 

核心收录：

D　O　I：10.1007/s11783-008-0050-8

馆 藏 号：203550751...