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標題: Enhanced dechlorination of chloroethenes by granular sludge under microaerophilic conditions
作者: Hwu, C.S.
Lu, C.J.
關鍵字: chlorinated ethenes;co-oxidation;groundwater bioremediation;microaerophilic;reductive dechlorination;mixed culture system;degradation
Project: World Journal of Microbiology & Biotechnology
期刊/報告no:: World Journal of Microbiology & Biotechnology, Volume 22, Issue 8, Page(s) 841-844.
This study investigates an innovative dechlorination process using anaerobic granular sludge that was partially exposed to oxygen. The exposure supported a synchronously anaerobic and aerobic bioconversion process that combined reductive dechlorination with aerobic co-oxidation in a sludge granule. Experimental results showed that the highest dechlorination rates of tetrachloroethene, trichloroethene, cis-dichloroethene and vinyl chloride were 6.44, 2.98, 1.70 and 0.97 nmol/gVS day, at initial O-2 concentrations of 10, 100, 5 and 0%, respectively. Strictly anaerobic conditions favored the dechlorination of vinyl chloride while absolutely aerobic conditions were preferred for trichloroethene dechlorination. Microaerophilic conditions are suggested to ensure the overall biodegradation of the chlorinated ethenes present in groundwater as a mixture.
ISSN: 0959-3993
DOI: 10.1007/s11274-005-9112-2
Appears in Collections:環境工程學系所

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