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Article: Anaerobic degradation of cornstarch in wastewater in two upflow reactors

TitleAnaerobic degradation of cornstarch in wastewater in two upflow reactors
Authors
Issue Date1996
PublisherAmerican Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/ee.html
Citation
Journal of Environmental Engineering, 1996, v. 122 n. 1, p. 9-17 How to Cite?
AbstractWastewater containing high concentrations of cornstarch was treated in two 8.5-L upflow reactors: upflow anaerobic sludge blanket (UASB) and a modified anaerobic filter (AF). Both reactors were operated in parallel at 37°C and pH 6.8-7.9 over 510 d with increased loadings of chemical oxygen demand (COD). Results showed that, in spite of having different sludge concentration profiles, both reactors, with 12 h of hydraulic retention time, removed an average of 95.3% of COD from wastewater containing up to 45,000 mg-COD · L-1 (loading rates up to 90 g-COD · L-1 · d-1). At Loading rates up to 75 g-COD·L-1d-1, only 0.42% and 0.80% of starch particulates remained unhydrolyzed and were washed out by the effluent from UASB and modified AF reactors, respectively. Of the COD removed, 85.9% was converted to methane and the rest was converted to biomass with a net sludge yield of 0.10 g-VSS · g-COD-1. Both reactors failed at loading rates higher than 90 g-COD · L-1 · d-1, because of severe washout of solids. The sludge granules had a methanogenic activity of 1.90-1.92 g-methane-COD · g-VSS-1 · d-1 and consisted of various trophic bacteria in the order of 108-109 m/L.
Persistent Identifierhttp://hdl.handle.net/10722/149798
ISSN
2015 Impact Factor: 1.125
2015 SCImago Journal Rankings: 0.462
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorKwong, TSen_US
dc.contributor.authorFang, HHPen_US
dc.date.accessioned2012-06-26T05:59:50Z-
dc.date.available2012-06-26T05:59:50Z-
dc.date.issued1996en_US
dc.identifier.citationJournal of Environmental Engineering, 1996, v. 122 n. 1, p. 9-17en_US
dc.identifier.issn0733-9372en_US
dc.identifier.urihttp://hdl.handle.net/10722/149798-
dc.description.abstractWastewater containing high concentrations of cornstarch was treated in two 8.5-L upflow reactors: upflow anaerobic sludge blanket (UASB) and a modified anaerobic filter (AF). Both reactors were operated in parallel at 37°C and pH 6.8-7.9 over 510 d with increased loadings of chemical oxygen demand (COD). Results showed that, in spite of having different sludge concentration profiles, both reactors, with 12 h of hydraulic retention time, removed an average of 95.3% of COD from wastewater containing up to 45,000 mg-COD · L-1 (loading rates up to 90 g-COD · L-1 · d-1). At Loading rates up to 75 g-COD·L-1d-1, only 0.42% and 0.80% of starch particulates remained unhydrolyzed and were washed out by the effluent from UASB and modified AF reactors, respectively. Of the COD removed, 85.9% was converted to methane and the rest was converted to biomass with a net sludge yield of 0.10 g-VSS · g-COD-1. Both reactors failed at loading rates higher than 90 g-COD · L-1 · d-1, because of severe washout of solids. The sludge granules had a methanogenic activity of 1.90-1.92 g-methane-COD · g-VSS-1 · d-1 and consisted of various trophic bacteria in the order of 108-109 m/L.en_US
dc.languageengen_US
dc.publisherAmerican Society of Civil Engineers. The Journal's web site is located at http://www.pubs.asce.org/journals/ee.htmlen_US
dc.relation.ispartofJournal of Environmental Engineeringen_US
dc.titleAnaerobic degradation of cornstarch in wastewater in two upflow reactorsen_US
dc.typeArticleen_US
dc.identifier.emailFang, HHP: hrechef@hkucc.hku.hken_US
dc.identifier.authorityFang, HHP=rp00115en_US
dc.description.naturelink_to_OA_fulltexten_US
dc.identifier.doi10.1061/(ASCE)0733-9372(1996)122:1(9)-
dc.identifier.scopuseid_2-s2.0-0002285763en_US
dc.identifier.hkuros13392-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0002285763&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume122en_US
dc.identifier.issue1en_US
dc.identifier.spage9en_US
dc.identifier.epage17en_US
dc.identifier.isiWOS:A1996TL83200004-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridKwong, TS=7004193956en_US
dc.identifier.scopusauthoridFang, HHP=7402542625en_US

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