Behavior of U(VI) under the Conditions of a Reservoir Bed for Liquid Radioactive Waste

Abstract

The behavior of U(VI) under the conditions of liquid radioactive waste (LRW) disposal in a reservoir bed was studied. Model experiments were performed to determine the radionuclide binding mechanism and the role of hydrolysis products of LRW cations and of sands from the reservoir bed. The U(VI) binding with the reservoir bed rocks depends on pH of the solution. The U(VI) binding with the solid phase under the conditions of LRW reservoir bed is determined by sorption reactions with components of the surrounding rocks. The kinetic of uranium leaching occurring with a decrease in pH of the solution was studied.