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Article: Interactions between methanogenic, sulfate-reducing and syntrophic acetogenic bacteria in the anaerobic degradation of benzoate

TitleInteractions between methanogenic, sulfate-reducing and syntrophic acetogenic bacteria in the anaerobic degradation of benzoate
Authors
KeywordsAcetogen
Anaerobic
Bacterial population
Benzoate
Electron flow
Interaction
Methanogen
Sulfate-reducer
Sulfide
Syntrophic association
Issue Date1996
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watres
Citation
Water Research, 1996, v. 30 n. 7, p. 1555-1562 How to Cite?
AbstractEffect of sulfate on the anaerobic degradation of benzoate was investigated by using the chemostat-type reactors at 35°C. The benzoate concentrations were equivalent to 1250-10,000 mg.l-1 in COD (chemical oxygen demand) and the sulfate concentrations were equivalent to 167-1670 mg.l-1 in sulfur (S). Interactions between the methane-producing bacteria (MPB) and sulfate-reducing bacteria (SRB) were dependent strongly on the ratio of COD/S in wastewater. The MPB consumed 99% of the available electron donors at COD/S ratio of 60, but consumed only 69% at ratio of 1.5, and 13% at 0.75. The biochemical reactions and the bacterial composition in the biomass were also governed by the COD/S ratio. At high COD/S ratios (3.0 or higher), benzoate was degraded mainly to methane via acetate and hydrogen/formate. The degradation of benzoate required the syntrophic association between the hydrogen-producing acetogens such as Syntrophus buswellii and hydrogen-consuming MPB, plus Methanothrix-like MPB. On the other hand, at low COD/S ratio (1.5 or lower), benzoate was consumed mainly by SRB, converting sulfate into sulfide and suppressing the methane production. The anaerobic degradation of benzoate was partially inhibited when sulfide concentration was high. | Effect of sulfate on the anaerobic degradation of benzoate was investigated by using the chemostat-type reactors at 35°C. The benzoate concentrations were equivalent to 1250-10,000 mg.1-1 in COD (chemical oxygen demand) and the sulfate concentrations were equivalent to 167-1670 mg.1-1 in sulfur (S). Interactions between the methane-producing bacteria (MPB) and sulfate-reducing bacteria (SRB) were dependent strongly on the ratio of COD/S in wastewater. The MPB consumed 99% of the available electron donors at COD/S ratio of 60, but consumed only 69% at ratio of 1.5, and 13% at 0.75. The biochemical reactions and the bacterial composition in the biomass were also governed by the COD/S ratio. At high COD/S ratios (3.0 or higher), benzoate was degraded mainly to methane via acetate and hydrogen/formate. The degradation of benzoate required the syntrophic association between the hydrogen-producing acetogens such as Syntrophus buswellii and hydrogen-consuming MPB, plus Methanothrix-like MPB. On the other hand, at low COD/S ratio (1.5 or lower), benzoate was consumed mainly by SRB, converting sulfate into sulfide and suppressing the methane production. The anaerobic degradation of benzoate was partially inhibited when sulfide concentration was high.
Persistent Identifierhttp://hdl.handle.net/10722/71798
ISSN
2015 Impact Factor: 5.991
2015 SCImago Journal Rankings: 2.772
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, YYen_HK
dc.contributor.authorLam, Sen_HK
dc.contributor.authorFang, HHPen_HK
dc.date.accessioned2010-09-06T06:35:16Z-
dc.date.available2010-09-06T06:35:16Z-
dc.date.issued1996en_HK
dc.identifier.citationWater Research, 1996, v. 30 n. 7, p. 1555-1562en_HK
dc.identifier.issn0043-1354en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71798-
dc.description.abstractEffect of sulfate on the anaerobic degradation of benzoate was investigated by using the chemostat-type reactors at 35°C. The benzoate concentrations were equivalent to 1250-10,000 mg.l-1 in COD (chemical oxygen demand) and the sulfate concentrations were equivalent to 167-1670 mg.l-1 in sulfur (S). Interactions between the methane-producing bacteria (MPB) and sulfate-reducing bacteria (SRB) were dependent strongly on the ratio of COD/S in wastewater. The MPB consumed 99% of the available electron donors at COD/S ratio of 60, but consumed only 69% at ratio of 1.5, and 13% at 0.75. The biochemical reactions and the bacterial composition in the biomass were also governed by the COD/S ratio. At high COD/S ratios (3.0 or higher), benzoate was degraded mainly to methane via acetate and hydrogen/formate. The degradation of benzoate required the syntrophic association between the hydrogen-producing acetogens such as Syntrophus buswellii and hydrogen-consuming MPB, plus Methanothrix-like MPB. On the other hand, at low COD/S ratio (1.5 or lower), benzoate was consumed mainly by SRB, converting sulfate into sulfide and suppressing the methane production. The anaerobic degradation of benzoate was partially inhibited when sulfide concentration was high. | Effect of sulfate on the anaerobic degradation of benzoate was investigated by using the chemostat-type reactors at 35°C. The benzoate concentrations were equivalent to 1250-10,000 mg.1-1 in COD (chemical oxygen demand) and the sulfate concentrations were equivalent to 167-1670 mg.1-1 in sulfur (S). Interactions between the methane-producing bacteria (MPB) and sulfate-reducing bacteria (SRB) were dependent strongly on the ratio of COD/S in wastewater. The MPB consumed 99% of the available electron donors at COD/S ratio of 60, but consumed only 69% at ratio of 1.5, and 13% at 0.75. The biochemical reactions and the bacterial composition in the biomass were also governed by the COD/S ratio. At high COD/S ratios (3.0 or higher), benzoate was degraded mainly to methane via acetate and hydrogen/formate. The degradation of benzoate required the syntrophic association between the hydrogen-producing acetogens such as Syntrophus buswellii and hydrogen-consuming MPB, plus Methanothrix-like MPB. On the other hand, at low COD/S ratio (1.5 or lower), benzoate was consumed mainly by SRB, converting sulfate into sulfide and suppressing the methane production. The anaerobic degradation of benzoate was partially inhibited when sulfide concentration was high.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watresen_HK
dc.relation.ispartofWater Researchen_HK
dc.subjectAcetogenen_HK
dc.subjectAnaerobicen_HK
dc.subjectBacterial populationen_HK
dc.subjectBenzoateen_HK
dc.subjectElectron flowen_HK
dc.subjectInteractionen_HK
dc.subjectMethanogenen_HK
dc.subjectSulfate-reduceren_HK
dc.subjectSulfideen_HK
dc.subjectSyntrophic associationen_HK
dc.titleInteractions between methanogenic, sulfate-reducing and syntrophic acetogenic bacteria in the anaerobic degradation of benzoateen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0043-1354&volume=30&issue=7&spage=1555&epage=1562&date=1996&atitle=Interactions+between+methanogenic,+sulfate-reducing+and+syntrophic+acetogenic+bacteria+in+the+anaerobic+degradation+of+benzoateen_HK
dc.identifier.emailFang, HHP:hrechef@hkucc.hku.hken_HK
dc.identifier.authorityFang, HHP=rp00115en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/0043-1354(95)00316-9en_HK
dc.identifier.scopuseid_2-s2.0-0030199998en_HK
dc.identifier.hkuros13391en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0030199998&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume30en_HK
dc.identifier.issue7en_HK
dc.identifier.spage1555en_HK
dc.identifier.epage1562en_HK
dc.identifier.isiWOS:A1996UU42300001-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLi, YY=7502096327en_HK
dc.identifier.scopusauthoridLam, S=7402279304en_HK
dc.identifier.scopusauthoridFang, HHP=7402542625en_HK

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