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dc.contributor.authorCelebi, O.en_US
dc.contributor.authorKilikli, A.en_US
dc.contributor.authorErten, H. N.en_US
dc.date.accessioned2016-02-08T10:02:36Z
dc.date.available2016-02-08T10:02:36Z
dc.date.issued2009en_US
dc.identifier.issn0304-3894
dc.identifier.urihttp://hdl.handle.net/11693/22627
dc.description.abstractIn this study, the sorption behavior of two important fission product radionuclides (137Cs and 140Ba) onto sodium form of insolubilized humic acid (INaA) were investigated as a function of time, cation concentration and temperature, utilizing the radiotracer method. The sorption processes are well described by both Freundlich and Dubinin-Radushkevich type isotherms. Thermodynamic constants such as; free energy (ΔGads), enthalpy (ΔHads), entropy (ΔSads) of adsorption were determined. It was found that Ba2+ was adsorbed five times more than Cs+ onto structurally modified humic acid and kinetic studies indicated that adsorption behavior of both ions obey the pseudo second order rate law. The effect of pH change on sorption was also examined. FTIR and solid-state carbon NMR (13CNMR) spectroscopic techniques were used to understand the structural changes during insolubilization process. Quantitative determination of adsorption sites was carried out using potantiometric titration.en_US
dc.language.isoEnglishen_US
dc.source.titleJournal of Hazardous Materialsen_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.jhazmat.2009.02.090en_US
dc.subjectHumic aciden_US
dc.subjectAdsorptionen_US
dc.subjectRadioactive substancesen_US
dc.subjectRadiotracer methoden_US
dc.subjectThermodynamic parametersen_US
dc.titleSorption of radioactive cesium and barium ions onto solid humic aciden_US
dc.typeArticleen_US
dc.departmentDepartment of Chemistryen_US
dc.citation.spage695en_US
dc.citation.epage703en_US
dc.citation.volumeNumber168en_US
dc.citation.issueNumber2-3en_US
dc.identifier.doi10.1016/j.jhazmat.2009.02.090en_US
dc.identifier.eissn1873-3336


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