Mixing effect on thermophilic anaerobic digestion of source-sorted organic fraction of municipal solid waste

Handle URI:
http://hdl.handle.net/10754/562252
Title:
Mixing effect on thermophilic anaerobic digestion of source-sorted organic fraction of municipal solid waste
Authors:
Ghanimeh, Sophia A.; El-Fadel, Mutasem E.; Saikaly, Pascal ( 0000-0001-7678-3986 )
Abstract:
This paper examines the effect of mixing on the performance of thermophilic anaerobic digestion of source-sorted organic fraction of municipal solid waste during the start-up phase and in the absence of an acclimated seed. For this purpose, two digesters were used under similar starting conditions and operated for 235days with different mixing schemes. While both digesters exhibited a successful startup with comparable specific methane yield of 0.327 and 0.314l CH 4/gVS, continuous slow stirring improved stability by reducing average VFA accumulation from 2890 to 825mg HAc/l, propionate content from 2073 to 488mg/l, and VFA-to-alkalinity ratio from 0.32 to 0.07. As a result, the startup with slow mixing was faster and smoother accomplishing a higher loading capacity of 2.5gVS/l/d in comparison to 1.9gVS/l/d for non-mixing. Mixing equally improved microbial abundance from 6.6 to 10gVSS/l and enhanced solids and soluble COD removal. © 2012 Elsevier Ltd.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division; Environmental Science and Engineering Program; Environmental Biotechnology Research Group
Publisher:
Elsevier
Journal:
Bioresource Technology
Issue Date:
Aug-2012
DOI:
10.1016/j.biortech.2012.02.125
PubMed ID:
22609715
Type:
Article
ISSN:
09608524
Sponsors:
This work was supported by the National Council for Scientific Research, Lebanon and the Masri Institute of Energy and Natural Resources at the American University of Beirut. Special thanks are extended to the US Agency for International Development for its support in acquiring the automated bioreactors used in the experimental program.
Appears in Collections:
Articles; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorGhanimeh, Sophia A.en
dc.contributor.authorEl-Fadel, Mutasem E.en
dc.contributor.authorSaikaly, Pascalen
dc.date.accessioned2015-08-03T09:58:06Zen
dc.date.available2015-08-03T09:58:06Zen
dc.date.issued2012-08en
dc.identifier.issn09608524en
dc.identifier.pmid22609715en
dc.identifier.doi10.1016/j.biortech.2012.02.125en
dc.identifier.urihttp://hdl.handle.net/10754/562252en
dc.description.abstractThis paper examines the effect of mixing on the performance of thermophilic anaerobic digestion of source-sorted organic fraction of municipal solid waste during the start-up phase and in the absence of an acclimated seed. For this purpose, two digesters were used under similar starting conditions and operated for 235days with different mixing schemes. While both digesters exhibited a successful startup with comparable specific methane yield of 0.327 and 0.314l CH 4/gVS, continuous slow stirring improved stability by reducing average VFA accumulation from 2890 to 825mg HAc/l, propionate content from 2073 to 488mg/l, and VFA-to-alkalinity ratio from 0.32 to 0.07. As a result, the startup with slow mixing was faster and smoother accomplishing a higher loading capacity of 2.5gVS/l/d in comparison to 1.9gVS/l/d for non-mixing. Mixing equally improved microbial abundance from 6.6 to 10gVSS/l and enhanced solids and soluble COD removal. © 2012 Elsevier Ltd.en
dc.description.sponsorshipThis work was supported by the National Council for Scientific Research, Lebanon and the Masri Institute of Energy and Natural Resources at the American University of Beirut. Special thanks are extended to the US Agency for International Development for its support in acquiring the automated bioreactors used in the experimental program.en
dc.publisherElsevieren
dc.subjectMixingen
dc.subjectNon-acclimated seeden
dc.subjectOrganic solid wasteen
dc.subjectThermophilic anaerobic digestionen
dc.titleMixing effect on thermophilic anaerobic digestion of source-sorted organic fraction of municipal solid wasteen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentEnvironmental Science and Engineering Programen
dc.contributor.departmentEnvironmental Biotechnology Research Groupen
dc.identifier.journalBioresource Technologyen
dc.contributor.institutionDepartment of Civil and Environmental Engineering, American University of Beirut, Lebanonen
kaust.authorSaikaly, Pascalen
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