Acetogenic microbial degradation of vinyl chloride

Environmental Science & Technology
By:  and 



Under methanogenic conditions, microbial degradation of [1,2-14C]vinyl chloride (VC) resulted in significant (14 ± 3% maximum recovery) but transient recovery of radioactivity as 14C-acetate. Subsequently, 14C-acetate was degraded to 14CH4 and 14CO2 (18 ± 2% and 54 ± 3% final recoveries, respectively). In contrast, under 2-bromoethanesulfonic acid (BES) amended conditions, 14C-acetate recovery remained high (27 ± 1% maximum recovery) throughout the study, no 14CH4 was produced, and the final recovery of 14CO2 was only 35 ± 4%. These results demonstrate that oxidative acetogenesis may be an important mechanism for anaerobic VC biodegradation. Moreover, these results (1) demonstrate that microbial degradation of VC to CH4and CO2 may involve oxidative acetogenesis followed by acetotrophic methanogenesis and (2) suggest that oxidative acetogenesis may be the initial step in the net oxidation of VC to CO2reported previously under Fe(III)-reducing, SO4-reducing, and humic acids-reducing conditions.

Publication type Article
Publication Subtype Journal Article
Title Acetogenic microbial degradation of vinyl chloride
Series title Environmental Science & Technology
DOI 10.1021/es991371m
Volume 34
Issue 13
Year Published 2000
Language English
Publisher ACS
Contributing office(s) Toxic Substances Hydrology Program
Description 3 p.
First page 2761
Last page 2763
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