Precipitation of copper (II) in a two-stage continuous treatment system using sulfate reducing bacteria

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dc.authorid0000-0002-1873-6038en_US
dc.contributor.authorBilgin, Ayla
dc.contributor.authorJaffe, Peter R.
dc.date.accessioned2019-11-27T13:24:30Z
dc.date.available2019-11-27T13:24:30Z
dc.date.issued2019
dc.departmentAÇÜ, Mühendislik Fakültesien_US
dc.description.abstractBiologically driven precipitation of dissolved copper and other trace metals has been used to treat contaminated aqueous streams. However, high dissolved trace metal concentrations can lead to toxicity, and their bioremediation difficult. Furthermore sorption of trace metals onto biomass might result in large amounts of contaminated byproducts. The aim of this work was to develop and test a two-stage reactor to bypass the toxic effects on the bacteria and chemically precipitate copper without contaminating the bulk of the biomass. Hence, copper removal using a sulfate reducing bacteria culture was investigated in a two-stage continuous treatment system. The first reactor was a sand-filled biological reactor in which the sulfate is reduced, followed by a second reactor/clarifier where the chemical precipitation and sedimentation of a CuS phase occurs. The influent Cu2+ concentration was varied systematically between 15 and 600 mg/L, and the precipitation of Cu2+ metal as CuS was achieved in the second reactor, resulting in complete (within detection limits) Cu2+ removal. EDS analysis on the solid phase collected from the second reactor confirmed the presence of Cu and S in the precipitate. EDS analysis on the solid phase collected from the second reactor confirmed the presence of Cu and S in the precipitate, and a CuS phase with minimal biomass was obtained. This configuration avoids toxicity effects of heavy metals in the biological reactor, as well as the contamination of biomass with the trace metal. Furthermore, the biomass free CuS precipitates can be easily disposed or even used to recover the trace metal.
dc.identifier.citationBilgin, A., & Jaffé, P. R. (2019). Precipitation of Copper (II) in a Two-Stage Continuous Treatment System Using Sulfate Reducing Bacteria. Waste and Biomass Valorization, 10(10), 2907. https://doi.org/10.1007/s12649-018-0329-3en_US
dc.identifier.doi10.1007/s12649-018-0329-3
dc.identifier.endpage2914en_US
dc.identifier.issue10en_US
dc.identifier.scopusqualityQ1
dc.identifier.startpage2907en_US
dc.identifier.urihttps://doi.org/10.1007/s12649-018-0329-3
dc.identifier.urihttps://hdl.handle.net/11494/1833
dc.identifier.volume10en_US
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorBilgin, Ayla
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofWaste and Biomass Valorization
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectHeavy Metalen_US
dc.subjectCopperen_US
dc.subjectCooper Sulfideen_US
dc.subjectAnaerobic Treatmenten_US
dc.subjectSulfate Reducing Bacteriaen_US
dc.titlePrecipitation of copper (II) in a two-stage continuous treatment system using sulfate reducing bacteriaen_US
dc.typeArticle

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