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Article: Anaerobic digestion of starch particulates in an upflow sludge blanket filter reactor

TitleAnaerobic digestion of starch particulates in an upflow sludge blanket filter reactor
Authors
KeywordsAnaerobic
Methanogenic
Particulate
Starch
Ubf
Issue Date1995
PublisherSelper Ltd. The Journal's web site is located at http://www.environtechnol.co.uk
Citation
Environmental Technology, 1995, v. 16 n. 1, p. 13-23 How to Cite?
AbstractThe effect of starch particulates in wastewater on an anaerobic upflow sludge blanket filter (UBF) reactor was evaluated at 37°C and pH 7.0-7.5 over a period of 415 days, during which the volumetric chemical oxygen demand (COD) loading was increased from 3 kg.m-3.d-1 to 50 kg.m-3.d-1. The initial organic substrate was a mixture of sucrose and starch. Upon reaching the constant loading rate of 10 kg-COD.m-3.d-1, starch gradually replaced sucrose in the wastewater and eventually became the sole substrate at loading rates of 10 kg-COD.m-3.d-1 and higher. Results showed that, despite the insoluble nature of the starch, only about 1.2% of starch in wastewater remained unhydrolyzed and about 5.9% became soluble COD in the effluent for loading rates up to 40 kg-COD.m-3.d-1. Of the COD removed, 86.1% was converted to methane and the rest was presumably converted to biomass with a sludge yield of 0.10 kg-VSS.kg-COD-1. The suspended solids in the effluent were mostly composed of the washed-out biomass, the amount of which increased with loading rate, because of the turbulence generated by the increased gas production and the insufficient depth of the reactor. There was no accumulation of starch in the reactor throughout this study. The starch-degrading granules had a higher methanogenic activity than granules in the previous studies degrading soluble carbohydrates. The bacterial populations of acidogens, syntrophic acetogens, and methanogens, were about 108-109 per ml.
Persistent Identifierhttp://hdl.handle.net/10722/150037
ISSN
2015 Impact Factor: 1.76
2015 SCImago Journal Rankings: 0.640
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorFang, HHPen_US
dc.contributor.authorKwong, TSen_US
dc.date.accessioned2012-06-26T06:01:13Z-
dc.date.available2012-06-26T06:01:13Z-
dc.date.issued1995en_US
dc.identifier.citationEnvironmental Technology, 1995, v. 16 n. 1, p. 13-23en_US
dc.identifier.issn0959-3330en_US
dc.identifier.urihttp://hdl.handle.net/10722/150037-
dc.description.abstractThe effect of starch particulates in wastewater on an anaerobic upflow sludge blanket filter (UBF) reactor was evaluated at 37°C and pH 7.0-7.5 over a period of 415 days, during which the volumetric chemical oxygen demand (COD) loading was increased from 3 kg.m-3.d-1 to 50 kg.m-3.d-1. The initial organic substrate was a mixture of sucrose and starch. Upon reaching the constant loading rate of 10 kg-COD.m-3.d-1, starch gradually replaced sucrose in the wastewater and eventually became the sole substrate at loading rates of 10 kg-COD.m-3.d-1 and higher. Results showed that, despite the insoluble nature of the starch, only about 1.2% of starch in wastewater remained unhydrolyzed and about 5.9% became soluble COD in the effluent for loading rates up to 40 kg-COD.m-3.d-1. Of the COD removed, 86.1% was converted to methane and the rest was presumably converted to biomass with a sludge yield of 0.10 kg-VSS.kg-COD-1. The suspended solids in the effluent were mostly composed of the washed-out biomass, the amount of which increased with loading rate, because of the turbulence generated by the increased gas production and the insufficient depth of the reactor. There was no accumulation of starch in the reactor throughout this study. The starch-degrading granules had a higher methanogenic activity than granules in the previous studies degrading soluble carbohydrates. The bacterial populations of acidogens, syntrophic acetogens, and methanogens, were about 108-109 per ml.en_US
dc.languageengen_US
dc.publisherSelper Ltd. The Journal's web site is located at http://www.environtechnol.co.uken_US
dc.relation.ispartofEnvironmental Technologyen_US
dc.subjectAnaerobicen_US
dc.subjectMethanogenicen_US
dc.subjectParticulateen_US
dc.subjectStarchen_US
dc.subjectUbfen_US
dc.titleAnaerobic digestion of starch particulates in an upflow sludge blanket filter reactoren_US
dc.typeArticleen_US
dc.identifier.emailFang, HHP: hrechef@hkucc.hku.hken_US
dc.identifier.authorityFang, HHP=rp00115en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1080/09593331608616241-
dc.identifier.scopuseid_2-s2.0-0028878715en_US
dc.identifier.hkuros811-
dc.identifier.volume16en_US
dc.identifier.issue1en_US
dc.identifier.spage13en_US
dc.identifier.epage23en_US
dc.identifier.isiWOS:A1995QC56500002-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridFang, HHP=7402542625en_US
dc.identifier.scopusauthoridKwong, TS=7004193956en_US

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