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Anaerobic Biodegradation of Tetrachloroethylene with Acetic Acid as Cometabolism Substrate under Anaerobic Condition
Authors:LI Ye  LIU Fei  CHEN Honghan  SHI Jinhua  WANG Yufan
Affiliation:[1]School of Geoscience and Space Science, Peking University, Beijing 100871, China [2]China University of Geosciences, Beijing Key Laboratory of Water Resources and Environmental Engineering, Beijing 100083, China
Abstract:A series of batch-type experiments with acetate acid as the primary substrate were performed using enrichment cultures developed from the anaerobic sludge to investigate the effect of acetate acid on tetrachloroethylene(PCE)biodegradation.Experimental results indicated that acetate acid was an efficient electron donor in affecting the biotransformability of PCE.Trichloroethylene (TCE)was the primary dehalogenation product,and small amounts of dichloroethylenes(DCEs)were also detected.No significant further DCEs degradation was detected.PCE degradation rate in the experiment was 36.6 times faster than background rate in natural groundwater.
Keywords:biodegradation  co-metabolism substrate  tetrachloroethylene
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