Adsorption of Remazol Brilliant Blue R using ZnO fine powder: Equilibrium, kinetic and thermodynamic modeling studies

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dc.contributor.authorAda, Kezban
dc.contributor.authorErgene, Aysun
dc.contributor.authorTan, Sema
dc.contributor.authorYalçın, Emine
dc.date.accessioned2020-06-25T17:48:23Z
dc.date.available2020-06-25T17:48:23Z
dc.date.issued2009
dc.departmentKırıkkale Üniversitesi
dc.description.abstractZinc oxide powders with six-sided flake-like particles were prepared by homogeneous precipitation from boiling aqueous solutions that contained excess urea and 0.075 (Z075) and 0.300 (Z300) M Zn2+. The average sizes of the particles are 37 and 46 mu m, while the average sizes of the crystals are similar to 45 for Z075 and Z300 at 1000 degrees C. Equilibrium, kinetic and thermodynamic studies were carried out for the adsorption of RBBR dye from aqueous solution using both types of ZnO in the form of fine powders. The effects of pH, initial dye concentration, contact time and temperature of solution on the adsorption were studied. Langmuir, Temkin and Dubinin-Radushkevich (D-R) isotherm models were used to describe the adsorption of RBBR onto ZnO powders. The Langmuir and D-R isotherm models fit the equilibrium data better than the Temkin isotherm model. The monomolecular adsorption capacity of Z075 and Z300 was determined to be 190 and 345 mg g(-1) for RBBR, respectively. The Lagergren first-order, Ritchie second-order kinetic and intra-particle diffusion models were used for the adsorption of the dye onto ZnO powders. The Ritchie second-order model was suitable for describing the adsorption kinetics for the removal of RBBR front aqueous solution onto Z075 and Z300. Thermodynamic parameters, such as the Gibbs free energy (Delta G(#)), enthalpy (Delta H-#), entropy (Delta S-#) and equilibrium constant of activation (K-#) were calculated. These parameters showed that the adsorption process of RBBR onto Z075 and Z300 was an endothermic process of a chemical nature under the studied conditions. (C) 2008 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipScientific and Technical Research Council of TurkeyTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [TUBITAK-104TO99]en_US
dc.description.sponsorshipThe authors are grateful to the Scientific and Technical Research Council of Turkey for supporting this work under the project TUBITAK-104TO99.en_US
dc.identifier.citationclosedAccessen_US
dc.identifier.doi10.1016/j.jhazmat.2008.10.036
dc.identifier.endpage644en_US
dc.identifier.issn0304-3894
dc.identifier.issn1873-3336
dc.identifier.issue1-3en_US
dc.identifier.pmid19059707
dc.identifier.scopus2-s2.0-64549141972
dc.identifier.scopusqualityQ1
dc.identifier.startpage637en_US
dc.identifier.urihttps://doi.org/10.1016/j.jhazmat.2008.10.036
dc.identifier.urihttps://hdl.handle.net/20.500.12587/4428
dc.identifier.volume165en_US
dc.identifier.wosWOS:000266121700084
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherElsevieren_US
dc.relation.ispartofJournal Of Hazardous Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectRemazol Brilliant Blue Ren_US
dc.subjectAdsorptionen_US
dc.subjectZinc oxide powdersen_US
dc.subjectIsothermsen_US
dc.subjectKineticsen_US
dc.subjectThermodynamicsen_US
dc.titleAdsorption of Remazol Brilliant Blue R using ZnO fine powder: Equilibrium, kinetic and thermodynamic modeling studiesen_US
dc.typeArticle

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