Adsorption of Uranium(Ⅵ) on Polyaluminium

This paper investigates the adsorption of uranium on the polyaluminium and the determination of uranium in the solution containing aluminum ion using Arsenazo Ⅲ. Research shows that: the error of uranium determination using Arsenazo Ⅲ is less than 10% when the concentration of aluminum is less than 0.1 mol/L in the 1∶1 hydrochloric acid medium, molar absorption coefficient is 10³ L/(mol•cm). When OH^- is two times aluminum in the polyaluminum and the concentration of aluminum is 5.64×10^-3 mol/L, the removal rate of uranium can reach 90% or more. Therefore, polyaluminum is a kind of very good uranium adsorption materials, and it can realize the volume reduction of the waste water containing uranium, thus reducing the costs of nuclear waste disposal.