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공과대학
환경공학과
Journal papers
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Reduction of perchlorate by salt tolerant bacterial consortia
Title
Reduction of perchlorate by salt tolerant bacterial consortia
Authors
Ryu H.W.
;
Nor S.J.
;
Moon K.E.
;
Cho K.-S.
;
Cha D.K.
;
Rhee K.I.
Ewha Authors
조경숙
SCOPUS Author ID
조경숙
Issue Date
2012
Journal Title
Bioresource Technology
ISSN
0960-8524
Citation
Bioresource Technology vol. 103, no. 1, pp. 279 - 285
Indexed
SCI; SCIE; SCOPUS
Document Type
Article
Abstract
Two perchlorate-reducing bacterial consortia (PRBC) were obtained by enrichment cultures from polluted marine sediments. Non-salt-tolerant PRBC (N-PRBC) was enriched without the addition of NaCl, and salt tolerant-PRBC (ST-PRBC) was enriched with 30g-NaClL -1. Although the perchlorate reduction rates decreased with increasing NaCl concentration, ST-PRBC (resp., N-PRBC) could reduce perchlorate until 75g-NaClL -1 (resp., 30g-NaClL -1). The reduction yield (1.34±0.05mg-perchlorate per mg-acetate) and maximum perchlorate reduction rate (86mg-perchlorateL -1h -1) of ST-PRBC was higher than those (1.16±0.03mg-perchlorate per mg-acetate and 48mg-perchlorateL -1h -1) of N-PRBC. Kinetic analysis showed that NaCl acted as an uncompetitive inhibitor against both PRBCs. The inhibition constants were 25 and 41mg-NaClL -1 for N-PRBC and ST-PRBC, respectively. © 2011 Elsevier Ltd.
DOI
10.1016/j.biortech.2011.09.115
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