Sorption of Cr(VI) ions on two Lewatit-anion exchange resins and their quantitative determination using UV-visible spectrophotometer

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dc.contributor.authorPehlivan, E.
dc.contributor.authorCetin, S.
dc.date.accessioned2020-03-26T17:40:12Z
dc.date.available2020-03-26T17:40:12Z
dc.date.issued2009
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThe sorption of Cr(VI) from aqueous solutions with macroporous resins which contain quarternary amine groups (Lewatit MP 64 and Lewatit MP 500) was studied at varying Cr(VI) concentration, adsorbent dose. pH, contact time and temperature. Batch shaking sorption experiments were carried out to evaluate the performance of Lewatit MP 64 and Lewatit MP 500 anion exchange resins in the removal of Cr(VI) from aqueous solutions. The concentration of Cr(VI) in aqueous solution was determined by UV-visible spectrophotometer. The ion exchange process, which is dependent on pH, showed maximum removal of Cr(VI) in the pH range 3-7 for an initial Cr(VI) concentration of 1 x 10(-3) M. The optimum pH for Cr(VI) adsorption was found as 5.0 for Lewatit MP 64 and 6.0 for Lewatit MP 500. The maximum Cr(VI) adsorption at pH 5.0 is 0.40 and 0.41 mmol/g resin for Lewatit MP 64 and Lewatit MP 500 anion exchangers, respectively. The maximum chromium sorption occurred at approximately 60 min for Lewatit MP 64 and 75 min for Lewatit MP 500. The suitability of the Freundlich and Langmuir adsorption models was also investigated for each chromium-sorbent system. The uptake of Cr(VI) by the anion exchange resins was reversible and so it has good potential for the removal of Cr(VI) from aqueous solutions. Both ion exchangers had high bonding constants but Lewatit MP 500 showed stronger binding. The rise in the temperature caused a slight decrease in the value of the equilibrium constant (K(c)) for the sorption of Cr(VI) ion. (c) 2008 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipSelcuk UniversitySelcuk University [SU2007/07101031]en_US
dc.description.sponsorshipWe would like to thank Selcuk University Research Fund for its financial support for this work (project number: SU2007/07101031).en_US
dc.identifier.doi10.1016/j.jhazmat.2008.06.115en_US
dc.identifier.endpage453en_US
dc.identifier.issn0304-3894en_US
dc.identifier.issue1en_US
dc.identifier.pmid18692308en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage448en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.jhazmat.2008.06.115
dc.identifier.urihttps://hdl.handle.net/20.500.12395/23862
dc.identifier.volume163en_US
dc.identifier.wosWOS:000263439800062en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherELSEVIER SCIENCE BVen_US
dc.relation.ispartofJOURNAL OF HAZARDOUS MATERIALSen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectAnion exchange resinen_US
dc.subjectBatch adsorptionen_US
dc.subjectChromiumen_US
dc.subjectAdsorption isothermsen_US
dc.titleSorption of Cr(VI) ions on two Lewatit-anion exchange resins and their quantitative determination using UV-visible spectrophotometeren_US
dc.typeArticleen_US

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