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dc.contributor.authorEren, Erdal
dc.date.accessioned2019-11-24T20:38:59Z
dc.date.available2019-11-24T20:38:59Z
dc.date.issued2009
dc.identifier.issn0304-3894
dc.identifier.urihttps://dx.doi.org/10.1016/j.jhazmat.2008.06.016
dc.identifier.urihttps://hdl.handle.net/20.500.12513/2609
dc.descriptionWOS: 000263370200106en_US
dc.descriptionPubMed ID: 18657359en_US
dc.description.abstractThe adsorption behavior of crystal violet (CV(+)) from aqueous solution onto raw (RB) and manganese oxide-modified (MMB) bentonite samples was investigated as a function of parameters such as initial CV(+) concentration, contact time and temperature. The Langmuir, Freundlich and Dubinin-Radushkevich (D-R) adsorption models were applied to describe the equilibrium isotherms. The Langmuir monolayer adsorption capacities of RB and MMB were estimated as 0.32 and 1.12 mmol/g, respectively. The mean adsorption energy derived from D-R isotherm for MMB showed that the type of adsorption of dye molecules on this material may be defined as chemical adsorption. The adsorption rate was fast and more than half of the adsorbed-CV(+) was removed in the first 55 min for RB and 5 min for MMB at the room temperature. The pseudo-first-order, pseudo-second-order kinetic and the intraparticle diffusion models were used to describe the kinetic data and rate constants were evaluated. The thermodynamic parameters such as Delta H, Delta S and Delta G were found 117.41 kJ/mol, 41.50J/(mol K), -5.07 kJ/mol (RB) and 21.19 kJ/mol 98.34 J/(mol K), -7.84 kJ/mol (MMB) at 295.15 K, respectively. The quite high adsorption capacity and high adsorption rate of MMB will provide an important advantage for using of this material in basic dye solution. (C) 2008 Elsevier B.V. All rights reserved.en_US
dc.language.isoengen_US
dc.publisherELSEVIER SCIENCE BVen_US
dc.relation.isversionof10.1016/j.jhazmat.2008.06.016en_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDye adsorptionen_US
dc.subjectClayen_US
dc.subjectKineticen_US
dc.subjectSurface chargeen_US
dc.subjectX-ray diffractionen_US
dc.titleRemoval of basic dye by modified Unye bentonite, Turkeyen_US
dc.typearticleen_US
dc.relation.journalJOURNAL OF HAZARDOUS MATERIALSen_US
dc.contributor.departmentKırşehir Ahi Evran Üniversitesi, Fen-Edebiyat Fakültesi, Kimya Bölümüen_US
dc.identifier.volume162en_US
dc.identifier.issue2.Maren_US
dc.identifier.startpage1355en_US
dc.identifier.endpage1363en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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