Inhibitory effect of heavy metals on methane-producing anaerobic granular sludge

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dc.contributor.authorAltaş, Levent
dc.date.accessioned13.07.201910:50:10
dc.date.accessioned2019-07-29T19:26:16Z
dc.date.available13.07.201910:50:10
dc.date.available2019-07-29T19:26:16Z
dc.date.issued2009
dc.departmentMühendislik Fakültesi
dc.description.abstractHeavy metals could potentially have a negative impact on methane-producing anaerobic granular sludge. The objective of this study was to investigate the inhibitory effect of zinc(II), chromium(VI), nickel(II), and cadmium(II) on the methane-producing activity of granular sludge sampled from the upflow anaerobic sludge blanket reactor that treats the wastewaters of a yeast factory, for a range of concentrations between 0 and 128 mg L-1. The modified Gompertz, Logistic, and Richards equations were applied to describe the inactivation of anaerobic culture by heavy metals. According to these models, the values of methane production potential (mL) for a heavy metal concentration of 128 mg L-1 were in the following order: Ni (44.82 +/- 0.67) > Cd (28.73 +/- 0.11) > Cr (15.52 +/- 1.63) > Zn (0.65 +/- 0.00). The IC50 values, the metal concentrations that cause a 50% reduction in the cumulative methane production over a fixed period of exposure time (24 h), for the individual heavy metals were found to be in the following order: Zn (most toxic; 7.5 mg L-1) > Cr (27 mg L-1) > Ni (35 mg L-1) approximate to Cd (least toxic; 36 mg L-1). (C) 2008 Elsevier B.V. All rights reserved.
dc.description.sponsorshipTurkish Scientific and Technical Research Council (TUBITAK); Turkish Government Planning Institution (DPT); CAYDAG [105Y262, DPT-2006K120880-1]
dc.description.sponsorshipThe Turkish Scientific and Technical Research Council (TUBITAK) and Turkish Government Planning Institution (DPT) funded this study. The author would like to thank them for the financial support given to the project with grant numbers CAYDAG 105Y262 and DPT-2006K120880-1.
dc.identifier.doi10.1016/j.jhazmat.2008.06.048
dc.identifier.endpage1556en_US
dc.identifier.issn0304-3894
dc.identifier.issn1873-3336
dc.identifier.issue02.Maren_US
dc.identifier.pmid18640779
dc.identifier.scopusqualityQ1
dc.identifier.startpage1551en_US
dc.identifier.urihttps://doi.org/10.1016/j.jhazmat.2008.06.048
dc.identifier.urihttps://hdl.handle.net/20.500.12451/5517
dc.identifier.volume162en_US
dc.identifier.wosWOS:000263370200130
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofJournal of Hazardous Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectInhibition
dc.subjectHeavy Metal
dc.subjectAnaerobic Granular Sludge
dc.subjectMethane Production
dc.titleInhibitory effect of heavy metals on methane-producing anaerobic granular sludge
dc.typeArticle

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