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Microbial treatment of high-strength perchlorate wastewater

Title
Microbial treatment of high-strength perchlorate wastewater
Authors
Nor S.J.Lee S.H.Cho K.-S.Cha D.K.Lee K.I.Ryu H.W.
Ewha Authors
조경숙이상현
SCOPUS Author ID
조경숙scopus
Issue Date
2011
Journal Title
Bioresource Technology
ISSN
0960-8524JCR Link
Citation
vol. 102, no. 2, pp. 835 - 841
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
To treat wastewater containing high concentrations of perchlorate, a perchlorate reducing-bacterial consortium was obtained by enrichment culture grown on high-strength perchlorate (1200mgL-1) feed medium, and was characterized in a sequence batch reactor (SBR) over a long-time operation. The consortium removed perchlorate in the SBR with high reduction rates (35-90mgL-1h-1) and stable removal efficiency over 200-day operations. The maximum specific perchlorate reduction rate (qmax), half saturation constant (Ks), and optimal pH range were 0.67mg-perchlorate mg-dry cell weight-1h-1, 193.8mg-perchlorateL-1, and pH 7-9, respectively. The perchlorate reduction yield was 0.48mol-perchloratemol-acetate-1. A clone library prepared using the amplicons of cld gene encoding chlorate dismutase showed that the dominant (per)chlorate reducing bacteria in the consortium were Dechlorosoma sp. (53%), Ideonella sp. (28%), and Dechloromonas sp. (19%). © 2010 Elsevier Ltd.
DOI
10.1016/j.biortech.2010.08.127
Appears in Collections:
엘텍공과대학 > 환경공학전공 > Journal papers
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