Heavy metal adsorption by modified oak sawdust: Thermodynamics and kinetics

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dc.contributor.authorArgun, Mehmet Emin
dc.contributor.authorDursun, Sukru
dc.contributor.authorOzdemir, Celalettin
dc.contributor.authorKaratas, Mustafa
dc.date.accessioned2020-03-26T17:17:30Z
dc.date.available2020-03-26T17:17:30Z
dc.date.issued2007
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThis paper describes the adsorption of heavy metal ions from aqueous solutions by oak (Quercus coccifera) sawdust modified by means of HCl treatment. Our study tested the removal of three heavy metals: Cu, Ni, and Cr. The optimum shaking speed, adsorbent mass, contact time, and pH were determined, and adsorption isotherms were obtained using concentrations of the metal ions ranging from 0.1 to 100 mg L-1. The adsorption process follows pseudo-second-order reaction kinetics, as well as Langmuir and D-R adsorption isotherms. The paper discusses the thermodynamic parameters of the adsorption (the Gibbs free energy, entropy, and enthalpy). Our results demonstrate that the adsorption process was spontaneous and endothermic under natural conditions. The maximum removal efficiencies were 93% for Cu(II) at pH 4, 82% for Ni(II) at pH 8, and 84% for Cr(VI) at pH 3. (c) 2006 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.jhazmat.2006.06.095en_US
dc.identifier.endpage85en_US
dc.identifier.issn0304-3894en_US
dc.identifier.issue1en_US
dc.identifier.pmid16879919en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage77en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.jhazmat.2006.06.095
dc.identifier.urihttps://hdl.handle.net/20.500.12395/21418
dc.identifier.volume141en_US
dc.identifier.wosWOS:000244985900011en_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.subjectheavy metalsen_US
dc.subjectadsorptionen_US
dc.subjectisothermsen_US
dc.subjectsawdusten_US
dc.subjectkineticsen_US
dc.subjectthermodynamicsen_US
dc.titleHeavy metal adsorption by modified oak sawdust: Thermodynamics and kineticsen_US
dc.typeArticleen_US

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