Cesium sorption from 0.02 N CaCl2 and NaCl solutions by montmorillonites, illites, micas, kaolinites, chlorites and shales decreased significantly with increasing temperature. For example, Cs sorption by AZ montmorillonite in 0.02 N CaCl2 decreased from 1.05 meq/100 g at 25°C to 0.69 meq/100 g at 80°C. At all the temperatures used for Cs sorption, a greater amount of Cs was sorbed by all the minerals from 0.02 N NaCl than from 0.02 N CaClin2. The results of this study clearly suggest that the effect of geothermal gradient on Cs sorption by clay minerals and shales is considerable and therefore may be considered before determining the suitability of a shale for a radioactive waste repository.
|Original language||English (US)|
|Number of pages||4|
|Journal||Journal of Inorganic and Nuclear Chemistry|
|State||Published - 1979|