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Article: Acidogenesis of gelatin-rich wastewater in an upflow anaerobic reactor: Influence of pH and temperature

TitleAcidogenesis of gelatin-rich wastewater in an upflow anaerobic reactor: Influence of pH and temperature
Authors
Issue Date2003
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watres
Citation
Water Research, 2003, v. 37 n. 1, p. 55-66 How to Cite?
AbstractThe influence of temperature and pH on the acidification of a synthetic gelatin based wastewater was investigated using an upflow anaerobic reactor. Gelatin degradation efficiency and rate, degree of acidification, and formation rate of volatile fatty acids and alcohols all slightly increased with temperature. Temperature affected the acidogenesis of gelatin according to the Arrhenius equation with an activation energy of 1.83kcal/mol. Compared with temperature, pH had a more significant effect on the acidogenesis. Gelatin degradation efficiency substantially increased with pH, from 60.0% at pH 4.0 to 97.5% at pH 7.0. The degree of acidification increased from 32.0% at pH 4.0 to 71.6% at pH 6.5, but dropped to 66.8% when pH increased to 7.0. The optimum pH for the overall acidogenic activity was found to be 6.0, close to 5.9, the optimum pH calculated using a semi-empirical model. Operation at pH of 4.0-5.0 favored the production of propionate, hydrogen, whereas the operation at pH 6.0-7.0 encouraged the production of acetate, butyrate, and i-butyrate. The region between pH 5.0 and 6.0 was the transition zone. © 2002 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/71734
ISSN
2015 Impact Factor: 5.991
2015 SCImago Journal Rankings: 2.772
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYu, HQen_HK
dc.contributor.authorFang, HHPen_HK
dc.date.accessioned2010-09-06T06:34:41Z-
dc.date.available2010-09-06T06:34:41Z-
dc.date.issued2003en_HK
dc.identifier.citationWater Research, 2003, v. 37 n. 1, p. 55-66en_HK
dc.identifier.issn0043-1354en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71734-
dc.description.abstractThe influence of temperature and pH on the acidification of a synthetic gelatin based wastewater was investigated using an upflow anaerobic reactor. Gelatin degradation efficiency and rate, degree of acidification, and formation rate of volatile fatty acids and alcohols all slightly increased with temperature. Temperature affected the acidogenesis of gelatin according to the Arrhenius equation with an activation energy of 1.83kcal/mol. Compared with temperature, pH had a more significant effect on the acidogenesis. Gelatin degradation efficiency substantially increased with pH, from 60.0% at pH 4.0 to 97.5% at pH 7.0. The degree of acidification increased from 32.0% at pH 4.0 to 71.6% at pH 6.5, but dropped to 66.8% when pH increased to 7.0. The optimum pH for the overall acidogenic activity was found to be 6.0, close to 5.9, the optimum pH calculated using a semi-empirical model. Operation at pH of 4.0-5.0 favored the production of propionate, hydrogen, whereas the operation at pH 6.0-7.0 encouraged the production of acetate, butyrate, and i-butyrate. The region between pH 5.0 and 6.0 was the transition zone. © 2002 Elsevier Science Ltd. All rights reserved.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.subject.meshAcids - chemistryen_HK
dc.subject.meshBioreactorsen_HK
dc.subject.meshGelatin - metabolismen_HK
dc.subject.meshHydrogen-Ion Concentrationen_HK
dc.subject.meshManufactured Materialsen_HK
dc.subject.meshTemperatureen_HK
dc.subject.meshWaste Disposal, Fluid - methodsen_HK
dc.titleAcidogenesis of gelatin-rich wastewater in an upflow anaerobic reactor: Influence of pH and temperatureen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0043-1354&volume=37&issue=1&spage=55&epage=66&date=2003&atitle=Acidogenesis+of+gelatin-rich+wastewater+in+an+upflow+anaerobic+reactor:+influence+of+pH+and+temperatureen_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/S0043-1354(02)00256-7en_HK
dc.identifier.pmid12465788-
dc.identifier.scopuseid_2-s2.0-0037209985en_HK
dc.identifier.hkuros76002en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037209985&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume37en_HK
dc.identifier.issue1en_HK
dc.identifier.spage55en_HK
dc.identifier.epage66en_HK
dc.identifier.isiWOS:000179316500007-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridYu, HQ=13008678100en_HK
dc.identifier.scopusauthoridFang, HHP=7402542625en_HK

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