Biodegradation of Acid Anthraquinone Dye in a Facultative-aerobic Process:Kinetics and Products  

作　　者：李茵 李再磊 

机构地区：[1]College of Environmental Science and Engineering,Donghua University

出　　处：《Journal of Donghua University(English Edition)》2009年第1期5-9,共5页东华大学学报（英文版）

基　　金：Natural Science Foundation of Shanghai,China (No.06ZR14002);Shanghai Leading Academic Discipline Project (No.B604)

摘　　要：The transformation of an anthraquinone dye blue 324 in a facultative-aerobic(F-A) system was investigated.Kinetic parameter study showed that higher Vmax coupled with more recalcitrant chemical oxygen demand(COD) were found in the facultative biofilm reactor(FBR) than in the aerobic reactor(AR).Results of the product analyses indicated that most of dye molecular could be facultatively broken down into simple intermediates,which would be further degraded under subsequent aerobic condition.The main metabolites in each reactor were detected by infrared(FT-IR) and high performance liquid chromatography and mass spectrometry(HPLC-MS).Comparison of the toxicities among the dye and its metabolites was conducted,surprisingly,the colorless intermediates from FBR possessed less inhibitory than original dye and the median effective luminescence concentration(EC50) in 15 min for aerobic effluent could not be detected,showing that hardly toxic products existed in the aerobic process effluent.The transformation of an anthraquinone dye blue 324 in a facultative-aerobic（F-A） system was investigated.Kinetic parameter study showed that higher Vmax coupled with more recalcitrant chemical oxygen demand（COD） were found in the facultative biofilm reactor（FBR） than in the aerobic reactor（AR）.Results of the product analyses indicated that most of dye molecular could be facultatively broken down into simple intermediates,which would be further degraded under subsequent aerobic condition.The main metabolites in each reactor were detected by infrared（FT-IR） and high performance liquid chromatography and mass spectrometry（HPLC-MS）.Comparison of the toxicities among the dye and its metabolites was conducted,surprisingly,the colorless intermediates from FBR possessed less inhibitory than original dye and the median effective luminescence concentration（EC50） in 15 min for aerobic effluent could not be detected,showing that hardly toxic products existed in the aerobic process effluent.

关 键 词：kinetics study products analyses TOXICITY dyewastewater 

分 类 号：X792[环境科学与工程—环境工程] X788