Abstract
Amorphous zirconium vanadate samples with different molar ratios have been prepared under optimum conditions. The experimental parameters such as the order of mixing and mixing ratios were established. The ion-exchange powders were characterized by X-ray diffraction, IR spectroscopy, and differential thermal analysis. The materials are thermally and chemically stable. The sorption behavior of Cs+, Co2+, and Ce4+ radionuclides was studied at varied values of Zr: V molar ratio, pH, and temperature. The thermodynamic equilibrium constants and the values of ΔG 0, ΔH 0, and ΔS 0 for the exchange of Cs+, Co2+ and Ce4+ radionuclides at Zr: V = 1: 6 were calculated from the exchange isotherms. At Zr: V = 1: 6, the capability of the material to sorb Cs+, Co2+, and Ce4+ ions is the highest. The process kinetics can be descirbed by first- or second-order equations.
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