Document Detail


Enhanced sulfate reduction with acidogenic sulfate-reducing bacteria.
MedLine Citation:
PMID:  18093734     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Sulfate reduction in a continuous flow, acidogenic reactor using molasses wastewater as the carbon source was studied at varying chemical oxygen demand/sulfate (COD/SO4(2-)) ratios. At a critical COD/SO4(2-) ratio of 2.7, neither COD nor sulfate were in excess for extra production of ethanol or acetate in the reactor. An acetic-type microbial metabolism was established with sulfate-reducing bacteria (SRB) significantly consuming hydrogen and volatile fatty acids produced by acidogenic bacteria and hydrogen producing acetogens in degrading COD, thereby yielding sulfate removal rate>94.6%. A low critical COD/SO(4)2- ratio of 1.6 was also observed with the enriched ASRB population in reactor which overcomes the barrier to the treatment capability of sulfate-laden wastewater treatment with limited COD supply.
Authors:
Aijie Wang; Nanqi Ren; Xu Wang; Duujong Lee
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-11-17
Journal Detail:
Title:  Journal of hazardous materials     Volume:  154     ISSN:  0304-3894     ISO Abbreviation:  J. Hazard. Mater.     Publication Date:  2008 Jun 
Date Detail:
Created Date:  2008-04-25     Completed Date:  2008-07-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9422688     Medline TA:  J Hazard Mater     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  1060-5     Citation Subset:  IM    
Affiliation:
School of Municipal & Environmental Engineering, Harbin Institute of Technology, P.O. Box 2614, 202 Haihe Road, Harbin 150090, China.
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MeSH Terms
Descriptor/Qualifier:
Bioreactors*
Molasses
Oxidation-Reduction
Sulfates / metabolism*
Sulfur-Reducing Bacteria / metabolism*
Waste Disposal, Fluid / methods*
Water Pollutants, Chemical / metabolism*
Chemical
Reg. No./Substance:
0/Sulfates; 0/Water Pollutants, Chemical

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