MODEL FOR SR-CS-CA-MG-NA ION-EXCHANGE UPTAKE KINETICS ON CHABAZITE

Many nuclear facilities throughout the world must separate strontium-9 0 and cesium-137 from natural waters containing calcium, magnesium, an d sodium. Our research showed that chabazite, a zeolite with a hexagon al ring structure, is cost-effective for this purpose. A batch kinetic uptake model for this five-component ion-exchange system was develope d and tested against experimental data, The pore-diffusion model of Ya o and Tien is used with the equilibrium model of Perona. The resulting model is fast and stable, and represents the experimental data well.