Under methanogenic conditions, stream-bed sediment microorganisms rapidly degraded [1,2- 14 C]vinyl chloride to 14 CH 4 and 14 CO 2 . Amendment with 2-bromoethanesulfonic acid eliminated 14 CH 4 production and decreased 14 CO 2 recovery by an equal molar amount. Results obtained with [ 14 C]ethene, [ 14 C]acetate, or 14 CO 2 as substrates indicated that acetotrophic methanogens were responsible for the production of 14 CH 4 during biodegradation of [1,2- 14 C]VC.
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Bradley et al. (1999) studied this question.
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