File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Acidification of mid- and high-strength dairy wastewaters

TitleAcidification of mid- and high-strength dairy wastewaters
Authors
Issue Date2001
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watres
Citation
Water Research, 2001, v. 35 n. 15, p. 3697-3705 How to Cite?
AbstractBatch and continuous experiments were conducted to study the influence of dairy wastewater strength (2-30g-COD/L) on acidification at pH 5.5 and 37°C. Results of batch experiments showed that carbohydrate was preferentially acidified as compared to protein and lipid. Production of VFAs (mainly acetate, propionate and butyrate) and hydrogen corresponded to carbohydrate acidification, whereas production of alcohols (mainly ethanol, propanol and butanol), plus i-butyrate and higher molecular-weight VFAs, corresponded to protein acidification. In treating high-strength wastewaters (8-30g-COD/L), acetate, butyrate and PH2 decreased after reaching their peak levels before leveling off. Results of continuous experiments with 12h of hydraulic retention showed that acidification decreased with the increase of wastewater COD, from 57.1% at 2g-COD/L to 28.8% at 30g-COD/L; among the constituents in dairy wastewater, 92-99% of carbohydrates, 59-85% of protein and 12-42% of lipid were acidified. High-strength wastewater favored production of hydrogen and alcohols, especially propanol and butanol. The biomass yield was 0.258g-VSS/g-COD. Copyright © 2001 Elsevier Science Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/71140
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.accessioned2010-09-06T06:29:16Z-
dc.date.available2010-09-06T06:29:16Z-
dc.date.issued2001en_HK
dc.identifier.citationWater Research, 2001, v. 35 n. 15, p. 3697-3705en_HK
dc.identifier.issn0043-1354en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71140-
dc.description.abstractBatch and continuous experiments were conducted to study the influence of dairy wastewater strength (2-30g-COD/L) on acidification at pH 5.5 and 37°C. Results of batch experiments showed that carbohydrate was preferentially acidified as compared to protein and lipid. Production of VFAs (mainly acetate, propionate and butyrate) and hydrogen corresponded to carbohydrate acidification, whereas production of alcohols (mainly ethanol, propanol and butanol), plus i-butyrate and higher molecular-weight VFAs, corresponded to protein acidification. In treating high-strength wastewaters (8-30g-COD/L), acetate, butyrate and PH2 decreased after reaching their peak levels before leveling off. Results of continuous experiments with 12h of hydraulic retention showed that acidification decreased with the increase of wastewater COD, from 57.1% at 2g-COD/L to 28.8% at 30g-COD/L; among the constituents in dairy wastewater, 92-99% of carbohydrates, 59-85% of protein and 12-42% of lipid were acidified. High-strength wastewater favored production of hydrogen and alcohols, especially propanol and butanol. The biomass yield was 0.258g-VSS/g-COD. Copyright © 2001 Elsevier Science Ltd.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.meshAgricultureen_HK
dc.subject.meshAnimalsen_HK
dc.subject.meshBacteria, Anaerobic - physiologyen_HK
dc.subject.meshCarbohydrates - chemistryen_HK
dc.subject.meshCattleen_HK
dc.subject.meshFatty Acids - chemistryen_HK
dc.subject.meshHydrogen-Ion Concentrationen_HK
dc.subject.meshLipids - chemistryen_HK
dc.subject.meshProteins - chemistryen_HK
dc.subject.meshVolatilizationen_HK
dc.subject.meshWaste Disposal, Fluiden_HK
dc.titleAcidification of mid- and high-strength dairy wastewatersen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0043-1354&volume=35 &issue=15&spage=3697 &epage= 3705&date=2001&atitle=Acidification+of+mid-+and+high-strength+dairy+wastewatersen_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(01)00077-Xen_HK
dc.identifier.pmid11561632-
dc.identifier.scopuseid_2-s2.0-0034893105en_HK
dc.identifier.hkuros67284en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0034893105&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume35en_HK
dc.identifier.issue15en_HK
dc.identifier.spage3697en_HK
dc.identifier.epage3705en_HK
dc.identifier.isiWOS:000170886000022-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridYu, HQ=13008678100en_HK
dc.identifier.scopusauthoridFang, HHP=7402542625en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats