Influence of Hydraulic Retention Time on Extent of PCE Dechlorination and Preliminary Characterization of the Enrichment Culture
作者： Dandan Zheng , Cynthia S. Carr , Joseph B. Hughes
关键词: Hydraulic retention time 、 Biodegradation 、 Waste management 、 Chemistry 、 Bioremediation 、 Anaerobic sludge 、 Bioreactor 、 Microbial population biology 、 Environmental chemistry 、 Vinyl chloride 、 Enrichment culture 、 General Environmental Science
摘要: The extent of tetrachloroethene (PCE) dechlorination in two chemostats was evaluated as a function hydraulic retention time (HRT). inoculum these from an upflow anaerobic sludge blanket (UASB) reactor that rapidly converts PCE to vinyl chloride (VC) and ethene. When the HRT 2.9 days, converted only cis-dichloroethene (cDCE). 11 end products were VC Further studies showed dechlorinating microbial community UASB contained distinct populations, one which cDCE other Methanogenic activity very low cultures. culture apparently has lower growth rate than culture, result, at shorter HRT, washed out system leading incomplete PCE. Both enrichment cultures used pyruvate or hydrogen electron donors for dechlorination. Acet...
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