Abstract
Bentonite deposit Jelsovy potok in Slovakia has great potential for use as a engineering barrier in the multi-barrier system of deep geological repository for high level radioactive waste and spent nuclear fuel. In this study, the adsorption equilibrium and kinetics of U(VI) ions on Slovak bentonite Jelsovy potok (J15) was examined. The removal of uranium cationic species from aqueous solutions (initial concentration: 10-1,000 mg/L) by J15 was studied in the absence of background electrolytes at initial pH (pH{sub init}) 2.5. The amount of the sorbed U was determined spectrophotometrically using the Arsenazo III method. The maximum uptake capacity observed was 30.15 (mg/g) at 298 K. Experimental results were analysed by the Langmuir, Freundlich and Dubinin-Redushkevich isotherm. The kinetics of adsorption of U(VI) ions was also discussed using the pseudo-first-order and the pseudo-second-order at three different temperatures. The experimental data fitted very well the pseudo-second-order kinetic model. The activation energy of the sorption was calculated as 11.316 kJ.mol{sup -}1 for J15. (authors)
Krajnak, A.;
Viglasova, E.;
Galambos, M.;
Rosskopfova, O.
[1]
- Comenius University in Bratislava, Faculty of Natural Sciences, Department of Nuclear Chemistry, 842 15 Bratislava (Slovakia)
Citation Formats
Krajnak, A., Viglasova, E., Galambos, M., and Rosskopfova, O.
Sorption of uranium cationic species from aqueous solutions on Slovak bentonite Jelsovy potok.
Slovakia: N. p.,
2013.
Web.
Krajnak, A., Viglasova, E., Galambos, M., & Rosskopfova, O.
Sorption of uranium cationic species from aqueous solutions on Slovak bentonite Jelsovy potok.
Slovakia.
Krajnak, A., Viglasova, E., Galambos, M., and Rosskopfova, O.
2013.
"Sorption of uranium cationic species from aqueous solutions on Slovak bentonite Jelsovy potok."
Slovakia.
@misc{etde_22122202,
title = {Sorption of uranium cationic species from aqueous solutions on Slovak bentonite Jelsovy potok}
author = {Krajnak, A., Viglasova, E., Galambos, M., and Rosskopfova, O.}
abstractNote = {Bentonite deposit Jelsovy potok in Slovakia has great potential for use as a engineering barrier in the multi-barrier system of deep geological repository for high level radioactive waste and spent nuclear fuel. In this study, the adsorption equilibrium and kinetics of U(VI) ions on Slovak bentonite Jelsovy potok (J15) was examined. The removal of uranium cationic species from aqueous solutions (initial concentration: 10-1,000 mg/L) by J15 was studied in the absence of background electrolytes at initial pH (pH{sub init}) 2.5. The amount of the sorbed U was determined spectrophotometrically using the Arsenazo III method. The maximum uptake capacity observed was 30.15 (mg/g) at 298 K. Experimental results were analysed by the Langmuir, Freundlich and Dubinin-Redushkevich isotherm. The kinetics of adsorption of U(VI) ions was also discussed using the pseudo-first-order and the pseudo-second-order at three different temperatures. The experimental data fitted very well the pseudo-second-order kinetic model. The activation energy of the sorption was calculated as 11.316 kJ.mol{sup -}1 for J15. (authors)}
place = {Slovakia}
year = {2013}
month = {Apr}
}
title = {Sorption of uranium cationic species from aqueous solutions on Slovak bentonite Jelsovy potok}
author = {Krajnak, A., Viglasova, E., Galambos, M., and Rosskopfova, O.}
abstractNote = {Bentonite deposit Jelsovy potok in Slovakia has great potential for use as a engineering barrier in the multi-barrier system of deep geological repository for high level radioactive waste and spent nuclear fuel. In this study, the adsorption equilibrium and kinetics of U(VI) ions on Slovak bentonite Jelsovy potok (J15) was examined. The removal of uranium cationic species from aqueous solutions (initial concentration: 10-1,000 mg/L) by J15 was studied in the absence of background electrolytes at initial pH (pH{sub init}) 2.5. The amount of the sorbed U was determined spectrophotometrically using the Arsenazo III method. The maximum uptake capacity observed was 30.15 (mg/g) at 298 K. Experimental results were analysed by the Langmuir, Freundlich and Dubinin-Redushkevich isotherm. The kinetics of adsorption of U(VI) ions was also discussed using the pseudo-first-order and the pseudo-second-order at three different temperatures. The experimental data fitted very well the pseudo-second-order kinetic model. The activation energy of the sorption was calculated as 11.316 kJ.mol{sup -}1 for J15. (authors)}
place = {Slovakia}
year = {2013}
month = {Apr}
}