TY - JOUR
T1 - Enhancing denitrifying sulfide removal with functional strains under micro-aerobic condition
AU - Chen, Chuan
AU - Wang, Aijie
AU - Ren, Nanqi
AU - Zhao, Qingliang
AU - Liu, Lihong
AU - Adav, Sunil S.
AU - Lee, Duu Jong
AU - Chang, Jo Shu
PY - 2010/6
Y1 - 2010/6
N2 - The biological denitrifying sulfide reaction (DSR) frequently proceeds in anaerobic environments since excess oxygen inhibits the activity of the denitrifiers. This study isolated a consortium H7, comprising two strains, Penibacillus sp. and Aneurinibacillus aneurinilyticus. It indicated that the DSR performance with the H7 in a mixotrophic medium is significantly enhanced at high sulfide concentrations. The H7 was inhibited by adding >200 mg l-1 of S2- under anaerobic conditions. However, when 280 mg -1 of S2- was added, H7 could still degrade some of the sulfide, nitrate and acetate under micro-aerobic conditions. Micro-aerobic conditions stimulated the activity of sulfide oxidase and increased the removal rate of highly concentrated sulfide, reducing the inhibition of sulfide on denitrifiers and improving DSR performance.
AB - The biological denitrifying sulfide reaction (DSR) frequently proceeds in anaerobic environments since excess oxygen inhibits the activity of the denitrifiers. This study isolated a consortium H7, comprising two strains, Penibacillus sp. and Aneurinibacillus aneurinilyticus. It indicated that the DSR performance with the H7 in a mixotrophic medium is significantly enhanced at high sulfide concentrations. The H7 was inhibited by adding >200 mg l-1 of S2- under anaerobic conditions. However, when 280 mg -1 of S2- was added, H7 could still degrade some of the sulfide, nitrate and acetate under micro-aerobic conditions. Micro-aerobic conditions stimulated the activity of sulfide oxidase and increased the removal rate of highly concentrated sulfide, reducing the inhibition of sulfide on denitrifiers and improving DSR performance.
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U2 - 10.1016/j.procbio.2010.02.013
DO - 10.1016/j.procbio.2010.02.013
M3 - Article
AN - SCOPUS:77950917427
SN - 1359-5113
VL - 45
SP - 1007
EP - 1010
JO - Process Biochemistry
JF - Process Biochemistry
IS - 6
ER -