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The present work has focused on the uptake behavior of uranium (VI) from sulfuric acid media by using Lewatit MonoPlus M500 resin. The influence of parameters, namely pH, U (VI) initial concentration, contact time and temperature were investigated. The optimum conditions were explicated via the sorption kinetics, the isotherm models and the thermodynamic data to determine the behavior of the uranium adsorption. The studied resin is an efficient sorbent for U (VI) ions with maximum sorption capacity qmax 181.82 mg g-1 and agreed with both the pseudo-second order kinetic model and Langmuir isotherm. Thermodynamic characteristics showed that the process was spontaneous (ΔG° < 0) and exothermic (ΔH° < 0) in nature. Finally, by application of the results to increase the uranium assay and purity in the working impure uranium concentrate which produced at Gattar pilot plant, Egypt. The assay increase from about 36% up to 71%, while the purity up to 94%.

Uranium Sorption Using Lewatit MonoPlus M500 from Sulphate Media