The impact of toxicity of metals on the activity of ureolytic mixed culture during the precipitation of calcium

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dc.contributor.authorKurmac, Yakup
dc.date.accessioned13.07.201910:50:10
dc.date.accessioned2019-07-29T19:27:10Z
dc.date.available13.07.201910:50:10
dc.date.available2019-07-29T19:27:10Z
dc.date.issued2009
dc.departmentMühendislik Fakültesi
dc.description.abstractin this article, the inhibitory impact of metals on Substrate utilization and microbial carbonate precipitation (MCP) by ureolytic mixed Cultures (UMC) was investigated with glucose and mineral medium under batch conditions. The IC(50) (toxicant concentration eliciting 50% inhibitory effect) values were determined from the BOD values of samples. Inhibition, expressed as the value of 50% inhibitory effect (IC(50)), was evaluated by the decrease in Substrate removal using BOD tests. The effect of toxicity of metals on substrate degradation, IC(50) values, was found to increase in the following order: Cd(II) > Cu(II) > Pb(II) > Cr(VI) > Ni(II) > Zn(II). Nitrification a possible phenomenon in the biocatalytic process was observed in several samples and this inhibited the precipitation of soluble calcium. During the removal of calcium from industrial calcium-rich wastewater, toxicity of metal at higher metal concentrations and possibility of nitrification at higher sludge ages should be considered. (C) 2008 Elsevier B.V. All rights reserved.
dc.description.sponsorshipTurkish Scientific and Technical Research Council (TUBITAK); Turkish Government Planning Institution (DPT) [CAYDAG 105Y262, 2006K120880-1]
dc.description.sponsorshipThe author would like to thank the Turkish Scientific and Technical Research Council (TUBITAK) and Turkish Government Planning Institution (DPT) for the financial support given to this project with grant numbers CAYDAG 105Y262 and 2006K120880-1.
dc.identifier.doi10.1016/j.jhazmat.2008.07.061
dc.identifier.endpage1067en_US
dc.identifier.issn0304-3894
dc.identifier.issue02.Maren_US
dc.identifier.pmid18723282
dc.identifier.scopusqualityQ1
dc.identifier.startpage1063en_US
dc.identifier.urihttps://doi.org/10.1016/j.jhazmat.2008.07.061
dc.identifier.urihttps://hdl.handle.net/20.500.12451/5805
dc.identifier.volume163en_US
dc.identifier.wosWOS:000264160000077
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.subjectUreolytic
dc.subjectCalcium Removal
dc.subjectInhibition
dc.subjectNitrification
dc.subjectPrecipitation
dc.titleThe impact of toxicity of metals on the activity of ureolytic mixed culture during the precipitation of calcium
dc.typeArticle

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