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Conference Paper: Bio-hydrogen production from wastewater

TitleBio-hydrogen production from wastewater
Authors
KeywordsBio-hydrogen
Clostridium
Fermentation
Phototrophic
Rhodobacter
Wastewater
Issue Date2004
PublisherIWA Publishing. The Journal's web site is located at http://www.iwapublishing.com/template.cfm?name=iwapwst_ws
Citation
Water Science And Technology: Water Supply, 2004, v. 4 n. 1, p. 77-85 How to Cite?
AbstractThe technically feasibility of converting organic pollutants in wastewater into hydrogen by a continuous two-step process was demonstrated. Two carbohydrates, i.e. glucose and sucrose, in wastewater were respectively acidified by dark fermentation at pH 5.5 with 6-6.6 hours of hydraulic retention in a 3-1 fermentor, producing an effluent containing mostly acetate and butyrate, and a methane-free biogas comprising mostly hydrogen. The acidified effluent was then further treated by photo fermentation for hydrogen production. The overall yield based on the substrate consumed was 31-32%, i.e. 17-18% for dark fermentation and 14% for photo fermentation. It was found that under certain dark fermentation conditions, hydrogen-producing sludge was agglutinated into granules, resulting in a higher biomass density and increased volumetric hydrogen production efficiency. DNA-based analysis of microbial communities revealed that the respective predominant bacteria were Clostridium in dark fermentation and Rhodobacter in photo fermentation. Further investigations are warranted, particularly, in areas such as improving reactor design, treating protein and lipid rich wastewaters, and studying sludge granulation mechanisms and controlling factors.
Persistent Identifierhttp://hdl.handle.net/10722/70834
ISSN
2015 Impact Factor: 0.532
2015 SCImago Journal Rankings: 0.315
References

 

DC FieldValueLanguage
dc.contributor.authorFang, HHPen_HK
dc.contributor.authorLiu, Hen_HK
dc.contributor.authorZhang, Ten_HK
dc.date.accessioned2010-09-06T06:26:32Z-
dc.date.available2010-09-06T06:26:32Z-
dc.date.issued2004en_HK
dc.identifier.citationWater Science And Technology: Water Supply, 2004, v. 4 n. 1, p. 77-85en_HK
dc.identifier.issn1606-9749en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70834-
dc.description.abstractThe technically feasibility of converting organic pollutants in wastewater into hydrogen by a continuous two-step process was demonstrated. Two carbohydrates, i.e. glucose and sucrose, in wastewater were respectively acidified by dark fermentation at pH 5.5 with 6-6.6 hours of hydraulic retention in a 3-1 fermentor, producing an effluent containing mostly acetate and butyrate, and a methane-free biogas comprising mostly hydrogen. The acidified effluent was then further treated by photo fermentation for hydrogen production. The overall yield based on the substrate consumed was 31-32%, i.e. 17-18% for dark fermentation and 14% for photo fermentation. It was found that under certain dark fermentation conditions, hydrogen-producing sludge was agglutinated into granules, resulting in a higher biomass density and increased volumetric hydrogen production efficiency. DNA-based analysis of microbial communities revealed that the respective predominant bacteria were Clostridium in dark fermentation and Rhodobacter in photo fermentation. Further investigations are warranted, particularly, in areas such as improving reactor design, treating protein and lipid rich wastewaters, and studying sludge granulation mechanisms and controlling factors.en_HK
dc.languageengen_HK
dc.publisherIWA Publishing. The Journal's web site is located at http://www.iwapublishing.com/template.cfm?name=iwapwst_wsen_HK
dc.relation.ispartofWater Science and Technology: Water Supplyen_HK
dc.subjectBio-hydrogenen_HK
dc.subjectClostridiumen_HK
dc.subjectFermentationen_HK
dc.subjectPhototrophicen_HK
dc.subjectRhodobacteren_HK
dc.subjectWastewateren_HK
dc.titleBio-hydrogen production from wastewateren_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0273-1223&volume=4&spage=77&epage=86&date=2004&atitle=Bio-hydrogen+production+from+wastewateren_HK
dc.identifier.emailFang, HHP:hrechef@hkucc.hku.hken_HK
dc.identifier.emailZhang, T:zhangt@hkucc.hku.hken_HK
dc.identifier.authorityFang, HHP=rp00115en_HK
dc.identifier.authorityZhang, T=rp00211en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-1542284142en_HK
dc.identifier.hkuros93240en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-1542284142&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume4en_HK
dc.identifier.issue1en_HK
dc.identifier.spage77en_HK
dc.identifier.epage85en_HK
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridFang, HHP=7402542625en_HK
dc.identifier.scopusauthoridLiu, H=36072584800en_HK
dc.identifier.scopusauthoridZhang, T=24470677400en_HK

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