Cultures able to dechlorinate cis-1,2-dichloroethene (cDCE) were selected with ethene (3-20%, v/v) as the sole source of carbon and energy. One mixed culture (K20) could degrade cDCE (400 &mgr;mol l(-1)) or vinyl chloride (100 &mgr;mol l(-1)) in the presence of ethene (
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