Experimental and modeling studies on sorption and diffusion of radium in bentonite

摘要

The sorption and desorption behavior of radium on bentonite and purified smectite was investigated as a function of pH, ionic strength and liquid to solid ratio by batch experiments. The distribution coefficients (K_d) were in the range of 10~2 to > 10~4 ml g~-1 and depended on ionic strength and pH. Most of sorbed Ra was desorbed by 1 M KCl.