Uranium adsorption characteristic and thermodynamic behavior of clinoptilolite zeolite

A. Kilincarslan*, S. Akyil

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Özet

Natural zeolite, clinoptilolite was tested for its ability to remove uranium from aqueous solutions. Influence parameters to the sorption process, such as initial uranium concentration, pH, contact time and temperature were investigated. Distribution coefficients of uranium on clinoptilolite were measured by batch technique. Experimental isotherms evaluated from the distribution coefficients were fit to Langmuir, Freundlich and Dubinin-Radushkevich (D-R) models. Values of ΔH and ΔS were found as 0.93 and 56.09 J/mole, respectively. It was observed that the adsorption process is endothermic. Kinetics of uranium sorption was investigated at different time intervals at 30°C. The reaction rate and diffusion constant were calculated.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)541-548
Sayfa sayısı8
DergiJournal of Radioanalytical and Nuclear Chemistry
Hacim264
Basın numarası3
DOI'lar
Yayın durumuYayınlandı - Haz 2005
Harici olarak yayınlandıEvet

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