STUDY OF FACTORS DOMINATING SORPTION-DESORPTION OF CS IN SOIL

The phenomena of Cs sorption in soil as well as the main factors affec ting K-d value were investigated in this study. Ion exchange/chemical sorption dominated the Cs sorption in soil components, and the reactio n was found to be exothermic. Cesium could be desorbed by ion exchange in soil, but it is not easily desorbed in deionized water. The pH ran ge of groundwater did not affect the sorption on soil components. The K-d value would increase slightly with a higher liquid-solid ratio. In equilibrium, the Cs concentration in soil solution is a function of t he liquid-solid ratio.