Sorption/desorption study of strontium on Ain Oussera soils around the Es-Salam reactor facility
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Four types of undisturbed soils around the Es-Salam reactor (Algeria) were used to evaluate the sorption behavior of strontium. The batch study was carried out under different experimental conditions. The kinetics were well fited by pseudosecond order model. Soils’s activation energies were 12.37, 14.76, 15.5 and 16.17 kJ mol−1, corresponding to ion-exchange-type sorption. Sorption was exothermic (ΔH° < 0), spontaneous (ΔG° < 0) and favorable at low temperature. Competing cations, particularly Ca2+ reduce the Sr adsorption. Desorption reaction showed a higher value of Sr in the easily extractible phase indicating a relative availability of the element.
KeywordsUndisturbed soils Sorption Batch Sr Desorption
This work was supported by the Algerian Atomic Energy Commission. The authors are grateful for the financial support.
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