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dc.contributor.authorCeylan H.
dc.contributor.authorŞahan T.
dc.contributor.authorGürkan R.
dc.contributor.authorKubilay Ş.
dc.date.accessioned2019-07-27T12:10:23Z
dc.date.accessioned2019-07-28T09:12:40Z
dc.date.available2019-07-27T12:10:23Z
dc.date.available2019-07-28T09:12:40Z
dc.date.issued2005
dc.identifier.issn0263-6174
dc.identifier.urihttps://dx.doi.org/10.1260/026361705775212475
dc.identifier.urihttps://hdl.handle.net/20.500.12418/4441
dc.description.abstractThe adsorption removal of some heavy metal cations such as Cu(II), Zn(II) and Co(II) from aqueous solution onto kaolin has been studied using the batch method with initial metal ion concentrations within the range 15-70 mg/l. The percentage adsorption and equilibrium concentrations were determined by means of atomic absorption flame photometry as a function of adsorbate concentration, pH and temperature. Ion-exchange studies showed that over the complete concentration range studied the adsorption ratios for metal cations adsorbed onto kaolin correlated with the linear forms of the Langmuir, Freundlich and Dubinin-Kaganer-Radushkevich (DKR) adsorption isotherms. The cation-exchange capacity of kaolin towards each metal ion studied was evaluated. It was found that the adsorption phenomena depended on the charge density and diameter of the hydrated ion. The equilibrium studies demonstrated that the selectivity of the ions followed the sequence Zn(II) > Cu(II) > Co(II) at pH 7.0. Calculation of thermodynamic parameters such as the standard enthalpy (?H0), Gibbs free energy (?G0) and entropy (?S0) showed that the adsorption of the heavy metal ions studied onto kaolin was an endothermic process which was favoured at higher temperatures. These results show that natural kaolin has a considerable potential for the removal of heavy metal cationic species from aqueous solution and wastewater. © 2006 Ingenta.en_US
dc.language.isoengen_US
dc.relation.isversionof10.1260/026361705775212475en_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleRemoval of some heavy metal cations from aqueous solution by adsorption onto natural kaolinen_US
dc.typearticleen_US
dc.relation.journalAdsorption Science and Technologyen_US
dc.contributor.departmentCeylan, H., Department of Chemistry, Faculty of Science and Arts, University of Yüzüncü Yil, 65080 Van, Turkey -- Şahan, T., Department of Chemistry, Faculty of Science and Arts, University of Yüzüncü Yil, 65080 Van, Turkey -- Gürkan, R., Department of Chemistry, Faculty of Science and Arts, University of Cumhuriyet, 58140 Sivas, Turkey -- Kubilay, Ş., Department of Chemistry, Faculty of Science and Arts, University of Yüzüncü Yil, 65080 Van, Turkeyen_US
dc.identifier.volume23en_US
dc.identifier.issue7en_US
dc.identifier.endpage534en_US
dc.identifier.startpage519en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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