Adsorption of Uranium on Hydrous Zirconium Oxidenfrom Uranyl Sulfate Solutions at.Elevated Temperatures

摘要

Measurements of the adsorptive capacity of hydrous zirconium oxide for uranium from uranyl sulfate solutions at high temperature (250°C) were made to characterize the effects of certain system variables on the uranium adsorption process.nTechniques employed included simple batch-type experiments in which small amounts of oxide were equilibrated with UO2SO4 solutions and modi¬fied break-through experiments with a special high-temperature ion-exchange column.nReproducibility of the results of the column experiments was poor, and little quantitative information was gained from them. The batch-type experiments indicated a dependence of the uranium adsorption at 250°C given by UA = 30-2C0.4 where UA is the amount of adsorbed uranium in nig per g of oxide, and C is the solution concentration in mg per ml at 25°C.