Preparation of ZrO2 and ZrO2-TiO2 microspheres by the sol-gel method and an experimental design approach to their strontium adsorption behaviours

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dc.contributor.authorTel, Hueseyin
dc.contributor.authorAltas, Yueksel
dc.contributor.authorEral, Meral
dc.contributor.authorSert, Senol
dc.contributor.authorCetinkaya, Berkan
dc.contributor.authorInan, Sueleyman
dc.date.accessioned2019-10-27T21:16:25Z
dc.date.available2019-10-27T21:16:25Z
dc.date.issued2010
dc.departmentEge Üniversitesien_US
dc.description.abstractZrO2 and ZrO2-TiO2 mixed gel spheres were prepared via sol-gel process. The source sols of Zr and Zr-Ti (with 1:1 molar ratio) were prepared by the ammonia addition method starting from ZrOCl2 and TiCl4 solutions. A simple method, using a gelation column containing two phases (methyl isobutyl ketone and ammonia) as sphere forming and gelling medium, allowing to direct preparation of ZrO2 and ZrO2-TiO2 mixed gel spheres. The adsorption behaviours of each adsorbent towards strontium were determined by the experimental design method for the possible application to its removal from radioactive waste solutions. pH, temperature, strontium concentration and shaking time were chosen as independent variables and the efficiency of strontium removal as dependent output variable. Central composite design (CCD), with seven replicates at the centre points and thus a total of 31 experiments were employed in this study for each synthesized ZrO2 and ZrO2-TiO2 microspheres. Sorption data have been interpreted in terms of Freundlich, Langmuir and Dubinin-Raclushkevich equations. Thermodynamic parameters for the sorption system have been determined. Each adsorbent were subjected to thermal treatment from 600 degrees C to 900 degrees C and were investigated by XRD, FTIR, DTA/TGA, SEM and BET surface area methods. (C) 2010 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipTUBITAK (The Scientific and Technological Research Council of Turkey)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [106T680]; EBILTEM (Ege University Research and Application Center of Science and Technology)Ege University [2008BIL022]en_US
dc.description.sponsorshipThe present work was financially supported by TUBITAK (The Scientific and Technological Research Council of Turkey) under Project No. 106T680 and EBILTEM (Ege University Research and Application Center of Science and Technology) under Project No, 2008BIL022.en_US
dc.identifier.doi10.1016/j.cej.2010.04.053
dc.identifier.endpage160en_US
dc.identifier.issn1385-8947
dc.identifier.issn1385-8947en_US
dc.identifier.issue01.Feben_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage151en_US
dc.identifier.urihttps://doi.org/10.1016/j.cej.2010.04.053
dc.identifier.urihttps://hdl.handle.net/11454/43667
dc.identifier.volume161en_US
dc.identifier.wosWOS:000279596600020en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofChemical Engineering Journalen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectZirconiaen_US
dc.subjectTitaniaen_US
dc.subjectStrontiumen_US
dc.subjectAdsorptionen_US
dc.subjectSol-gelen_US
dc.titlePreparation of ZrO2 and ZrO2-TiO2 microspheres by the sol-gel method and an experimental design approach to their strontium adsorption behavioursen_US
dc.typeArticleen_US

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