TY - JOUR
T1 - Uranium adsorption characteristic and thermodynamic behavior of clinoptilolite zeolite
AU - Kilincarslan, A.
AU - Akyil, S.
PY - 2005/6
Y1 - 2005/6
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=21044457251&partnerID=8YFLogxK
U2 - 10.1007/s10967-005-0750-5
DO - 10.1007/s10967-005-0750-5
M3 - Article
AN - SCOPUS:21044457251
SN - 0236-5731
VL - 264
SP - 541
EP - 548
JO - Journal of Radioanalytical and Nuclear Chemistry
JF - Journal of Radioanalytical and Nuclear Chemistry
IS - 3
ER -