Adsorption thermodynamic and desorption studies of U(VI) on modified silica gel (SiAPMS-HL)

In this study, the adsorption process was examined by various isotherm models Langmuir, Freundlich and Dubinin–Radushkevich and equilibrium data were successfully described by Langmuir model. Adsorption thermodynamics of uranium (VI) on modified silica gel (SiAPMS-HL) has been studied within a tempe...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2014-10, Vol.302 (1), p.79-85
Main Authors: Karayel Incili, Gamze, Aycik, Gul Asiye
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
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Summary:In this study, the adsorption process was examined by various isotherm models Langmuir, Freundlich and Dubinin–Radushkevich and equilibrium data were successfully described by Langmuir model. Adsorption thermodynamics of uranium (VI) on modified silica gel (SiAPMS-HL) has been studied within a temperature range from 293 to 333 K and the thermodynamic parameters, such as equilibrium constant ( K D ), standard free energy changes (Δ G °), standard enthalpy change (Δ H °) and standard entropy change (Δ S °), have been obtained. The desorption studies were conducted in batch system to investigate the kind, concentration and volume of the eluent.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-014-3344-2