Reductive dechlorination of 1,2-dichloroethane and chloroethane by cell suspensions of methanogenic bacteria |
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Authors: | Christof Holliger Gosse Schraa Alfons J M Stams Alexander J B Zehnder |
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Affiliation: | (1) Department of Microbiology, Wageningen Agricultural University, Hesselink van Suchtelenweg 4, NL-6703 CT Wageningen, The Netherlands |
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Abstract: | 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 H2/CO2 converted 1,2-dichloroethane and chloroethane at higher rates than acetate or methanol grown cells.Abbreviations BrES
2-bromoethanesulfonic acid
- CA
chloroethane
- 1,2-DCA
1,2-dichloroethane
- F430
Ni(II)tetrahydro-(12, 13)-corphin with an uroporphinoid (III) ligand skeleton |
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Keywords: | chloroethane 1 2-dichloroethane methanogenic bacteria Methanosarcina barkeri reductive dechlorination |
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