Adsorption Capacity and Structure Characterization of Palygorskite on Sr~(2+)

The paper studied adsorption capacity of Sr2+ on palygorskite in a few conditions including concentration,pH value,medium and temperature with the intermittence method and XRD characterization and analysis of palygorskite adsorbed Sr2+ and offered some reference for valued mid-lower radioactive waste disposal.Result showed that equilibrium adsorptive quantity of Sr2+ of palygorskite increased,equilibrium adsorptive rate and equilibrium adsorptive ratio decreased with the rise of solution concentration of Sr2+.Adsorptive capacity of Sr2+ of palygorskite heightened with the augment of pH value.Adsorptive capacity of Sr2+ of palygorskite was the best in medium 1,that of Sr2+ decreased by turn in medium 3,2,4.Adsorptive capacity of Sr2+ of palygorskite increased with the rise of temperature by the beyond of 303 K.Unit cell parameter a of palygorskite adsorbed Sr2+ increased and that b decreased under all conditions and that c,β and unit cell cubage were irregular.