Adsorption of Cr(III) ions by Turkish brown coals

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dc.contributor.authorGode, F
dc.contributor.authorPehlivan, E
dc.date.accessioned2020-03-26T16:56:30Z
dc.date.available2020-03-26T16:56:30Z
dc.date.issued2005
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThe equilibrium and kinetic properties of Cr(III) ion adsorption by two brown coals from Anatolia, Turkey, have been investigated in batch stirred-tank experiments. The effects of adsorbent dose, initial sorbate concentration and contact time on the adsorption of Cr(III) by Isparta-Yalvac-Yarikkaya (YK) and Kasikara (KK) brown coals were evaluated. The Cr(III) ions are able to form complex compounds with carboxylic and phenolic groups of brown coals and they were also bounded with phenolic groups even at low pH reaction of the solution (< 3). Mechanisms including ion exchange, complexation and adsorption to the surface are possible in the sorption process. Our batch adsorption studies show the equilibrium adsorption data fit the linear Langmuir adsorption isotherm. Adsorption equilibrium was achieved in about 15-20 min for chromium(III). The Langmuir adsorption isotherm was used to describe the observed sorption phenomena. The maximum equilibrium uptake was 0.05 mmol of Cr(III)/g for KK, and 0.26 mmol of Cr(III)/g for YK, respectively, at a pH of 4.5. More than 90% of chromium(III) was removed by KK and YK from an aqueous solution after 60 min. In every experiment, the maximum Cr(III) was sequestered from the solution within 60 min. It is proposed that KK and YK brown coals can be used as potential sorbents for Cr(III) removal from aqueous solutions. (c) 2004 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.fuproc.2004.10.006en_US
dc.identifier.endpage884en_US
dc.identifier.issn0378-3820en_US
dc.identifier.issue8en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage875en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.fuproc.2004.10.006
dc.identifier.urihttps://hdl.handle.net/20.500.12395/19583
dc.identifier.volume86en_US
dc.identifier.wosWOS:000228343400003en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherELSEVIER SCIENCE BVen_US
dc.relation.ispartofFUEL PROCESSING TECHNOLOGYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectchromiumen_US
dc.subjectbatch modeen_US
dc.subjectadsorptionen_US
dc.subjectnatural producten_US
dc.subjectbrown coalen_US
dc.titleAdsorption of Cr(III) ions by Turkish brown coalsen_US
dc.typeArticleen_US

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