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Internal loop photo-biodegradation reactor used for accelerated quinoline degradation and mineralization
Zhang Yongming 1 * #,Chang Ling 2,Gan Lu 2,Yan Ning 2,Liu Rui 3,Rittmann E. Bruce 4
1.Department of Environmental Engineering, Shanghai Normal University, Shanghai 200234
2.Department of Environmental Engineering, Shanghai Normal University, Shanghai, 200234
3.Zhejiang Provincial Key Laboratory of Water Science and Technology, Department of Environmental Technology and Ecology, Yangtze Delta Region Institute of Tsinghua University, Zhejiang, Jiaxing 314006
4.Swette Center for Environmental Biotechnology, Biodesign Institute, Arizona State University, Tempe, AZ85287-5701, USA
*Correspondence author
#Submitted by
Subject:
Funding: the Special Foundation of Chinese Colleges and Universities Doctoral Discipline (No.20113127110002), National Natural Science Foundation of China (No.50978164)
Opened online:24 July 2013
Accepted by: none
Citation: Zhang Yongming,Chang Ling,Gan Lu.Internal loop photo-biodegradation reactor used for accelerated quinoline degradation and mineralization[OL]. [24 July 2013] http://en.paper.edu.cn/en_releasepaper/content/4552203
 
 
Biofilm biodegradation was coupled with UV photolysis using the internal loop photobiodegradation reactor (ILPBR) for degradation of quinoline. Three protocols -- photolysis alone (P), biodegradation alone (B), and intimately coupled photolysis and biodegradation (P&B) - were used for degradation of quinoline in batch and continuous flow experiments. For a 1000 mg/L initial quinoline concentration, the volumetric removal rate for quinoline was 38% higher with P&B than with B in batch experiments, and the P&B kinetics were approximately the sum of kinetics from the P and B experiments. Continuous-flow experiments with an influent quinoline concentration of 1000 mg/L also gave significantly greater quinoline removal in P&B, and the quinoline-removal kinetics for P&B were equal to the sum of the removal kinetics for P and B. P&B similarly increased the rate and extent of quinoline mineraliation. The COD-removal kinetics for P&B were equal to the sum of kinetics for P and B, and the rate-limiting step for mineralization was transformation of quinoline.
Keywords:Quinoline; biodegradation; photolysis; biofilm
 
 
 

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