Treatment of high-fat-containing dairy wastewater in a sequential UASBR system: influence of recycle

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dc.contributor.authorErdirencelebi, Dilek
dc.date.accessioned2020-03-26T18:17:25Z
dc.date.available2020-03-26T18:17:25Z
dc.date.issued2011
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractBACKGROUND: Raw cheese whey originating from white cheese production results in a strong and complex wastewater excessively rich in organic matter (chemical oxygen demand, COD=28-65 g L(-1)), fatty matter (14-24.5 g L(-1)) and acidity (3.9-6.1 g L(-1)). It was treated in a three-stage configuration consisting of a pre-acidification (PA) tank and sequential upflow anaerobic sludge bed reactors (UASBRs) at 2.8-7 g COD L(-1) day(-1) organic loading rates, during which the effects of effluent recycling at low rates and promoted SRB activity were investigated. Acidification, volatile fatty acids (VFA), COD and fatty matter removal and volatile solids were monitored throughout the system during the study. RESULTS: Recycling of the effluent promoted VFA and COD removal as well as pH stability in both stages of the UASBRs and the effluent where high alkalinity levels were recovered reducing alkali requirement to 0.05 g OH g(-1) COD(applied). Higher removal rates of 71-100 and 50-92% for VFA and COD were obtained by use of recycling. Fatty matter was removed at 63-89% throughout the study. Volatile solids build-up was significant in the inlet zones of the UASBRs. CONCLUSIONS: The system produced efficient acidification in the PA tank, balanced pH levels and an effluent high in alkalinity and BOD/COD ratio. Efficient VFA removal and solids immobilization was obtained in both stages up to the highest loading rate. Recycling improved the system performance under high fatty matter loading conditions. A major advantage of the sequential system was that the second stage UASBR compensated for reduced performance in the first stage. (C) 2010 Society of Chemical Industryen_US
dc.description.sponsorshipTubitak, The Scientific and Technological Research Council of TurkeyTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [107Y245]en_US
dc.description.sponsorshipThis study was carried out at the Environmental Engineering Department of Selcuk University as part of the Project No. 107Y245 'Determination of the Anaerobic Treatability, Kinetics and Performance of Cheese and Yoghurt Production Wastewaters' supported by Tubitak, The Scientific and Technological Research Council of Turkey.en_US
dc.identifier.doi10.1002/jctb.2546en_US
dc.identifier.endpage533en_US
dc.identifier.issn0268-2575en_US
dc.identifier.issue4en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage525en_US
dc.identifier.urihttps://dx.doi.org/10.1002/jctb.2546
dc.identifier.urihttps://hdl.handle.net/20.500.12395/27026
dc.identifier.volume86en_US
dc.identifier.wosWOS:000288396400008en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherWILEY-BLACKWELLen_US
dc.relation.ispartofJOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectanaerobic digestionen_US
dc.subjectbiotreatmenten_US
dc.subjectlipidsen_US
dc.subjectprocess developmenten_US
dc.subjectrecyclingen_US
dc.subjectwastewateren_US
dc.titleTreatment of high-fat-containing dairy wastewater in a sequential UASBR system: influence of recycleen_US
dc.typeArticleen_US

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