Affiliation:
1. Center for Microbial Ecology,
2. Department of Microbiology and Molecular Genetics,
3. Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI 48824–1325, USA.
Abstract
1,1,1-Trichloroethane (TCA) is a ubiquitous environmental pollutant because of its widespread use as an industrial solvent, its improper disposal, and its substantial emission to the atmosphere. We report the isolation of an anaerobic bacterium, strain TCA1, that reductively dechlorinates TCA to 1,1-dichloroethane and chloroethane. Strain TCA1 required H
2
as an electron donor and TCA as an electron acceptor for growth, indicating that dechlorination is a respiratory process. Phylogenetic analysis indicated that strain TCA1 is related to gram-positive bacteria with low DNA G+C content and that its closest relative is
Dehalobacter restrictus
, an obligate H
2
-oxidizing, chloroethene-respiring bacterium.
Publisher
American Association for the Advancement of Science (AAAS)
Reference28 articles.
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4. Federal Register Fed. Regist. 54 22062 (1989).
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104 articles.
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