Show simple item record

dc.contributor.authorAkkaya, Recep
dc.date.accessioned2019-07-27T12:10:23Z
dc.date.accessioned2019-07-28T09:59:45Z
dc.date.available2019-07-27T12:10:23Z
dc.date.available2019-07-28T09:59:45Z
dc.date.issued2013
dc.identifier.issn0265-931X
dc.identifier.urihttps://dx.doi.org/10.1016/j.jenvrad.2012.11.015
dc.identifier.urihttps://hdl.handle.net/20.500.12418/8698
dc.descriptionWOS: 000317445200009en_US
dc.descriptionPubMed ID: 23416761en_US
dc.description.abstractPoly(hydroxyethylmethacrylate-pumice), [P(HEMA-Pum)], composite was synthesized by free radical polymerization in aqueous solution. The adsorptive features of P(HEMA-Pum) composite were investigated for UO22+ and Th4+ using a range of pH, concentration, time (kinetics), temperature (thermodynamics), ionic strength and selectivity, and the related parameters were derived from the obtained results. These results indicated that all adsorbents had high affinity to the uranium and thorium ions. The parameters obtained from Langmuir, Freundlich and Dubinin-Radsushkevich models fit the data well. The values of enthalpy and entropy changes showed that the overall adsorption process was endothermic (Delta H > 0) and increasing entropy (Delta S > 0), and it was spontaneous (Delta G < 0) as expected. The adsorption kinetics following the pseudo-second order model indicated that the rate-controlling step was chemical adsorption that occurred by ion exchange process. Reusability of P(HEMA-Pum) was also investigated, and it was found that the composite could be used at least 5 times. (c) 2012 Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipThe Research Fund of Cumhuriyet University (CUBAP)en_US
dc.description.sponsorshipThe author is grateful to Dr. Birnur AKKAYA for her valuable insights and contributions. This work was supported by The Research Fund of Cumhuriyet University (CUBAP) to which the author is grateful.en_US
dc.language.isoengen_US
dc.publisherELSEVIER SCI LTDen_US
dc.relation.isversionof10.1016/j.jenvrad.2012.11.015en_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAdsorptionen_US
dc.subjectCompositeen_US
dc.subjectPumiceen_US
dc.subjectPolyhydroxyethylmethacrylateen_US
dc.subjectThoriumen_US
dc.subjectUraniumen_US
dc.titleUranium and thorium adsorption from aqueous solution using a novel polyhydroxyethylmethacrylate-pumice compositeen_US
dc.typearticleen_US
dc.relation.journalJOURNAL OF ENVIRONMENTAL RADIOACTIVITYen_US
dc.contributor.departmentCumhuriyet Univ, Vocat Sch Hlth Serv, TR-58140 Sivas, Turkeyen_US
dc.contributor.authorIDAKKAYA, Recep -- 0000-0002-3477-7198en_US
dc.identifier.volume120en_US
dc.identifier.endpage63en_US
dc.identifier.startpage58en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record