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Reductive dechlorination of 1,2-dichloroethane and chloroethane by cell suspensions of methanogenic bacteria

✍ Scribed by Christof Holliger; Gosse Schraa; Alfons J. M. Stams; Alexander J. B. Zehnder

Publisher: Springer Netherlands
Year: 1990
Tongue: English
Weight: 683 KB
Volume: 1
Category: Article
ISSN: 0923-9820
DOI: 10.1007/bf00119762

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✦ Synopsis

Concentrated cell suspensions of methanogenic bacteria reductively dechlorinated 1,2-dichloroethane via two reaction-mechanisms: a dihalo-elimination yielding ethylene and two hydrogenolysis reactions yielding chloroethane and ethane, consecutively. The transformation of chloroethane to ethane was inhibited by 1,2-dichloroethane. Stimulation of methanogenesis caused an increase in the amount of dechlorination products formed, whereas the opposite was found when methane formation was inhibited. Cells of Methanosarcina barkeri grown on HJCO2 converted 1,2-dichloroethane and chloroethane at higher rates than acetate or methanol grown cells.

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