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Description
CeO2 solids of different surface areas have been prepared by sol-gel reverse micelles method using non ionic surfactant Triton X-100. The samples have then characterized by N2 isothermal adsorption, SEM microscopy and FTIR spectroscopy. The effect of the BET surface area/surface groups of the solids on the U(VI) adsorption has been investigated by batch-type experiments and evaluated by correlating the surface parameters with the corresponding maximum adsorption capacity values, which varied between 0.108 and 0.162 mg g-1. The adsorption of U(VI) by CeO2 is well described by the Langmuir isotherm model indicating the predominance of one type’s interaction between the U(VI) ions and the surface hydroxyl groups and that the adsorption efficacy strongly depends on the BET surface/surface hydroxyl groups.
