Study on Sorption Capacity and Characterization of Sr²⁺ on Synthetic Zeolite

Sr²⁺ adsorption capacity of synthetic zeolite（ZF） are studied with the intermittence method,and ZF adsorbed the Sr²⁺ is characterized and analyzed by XRD,as a reference for the evaluation of the disposal effectiveness of low and medium radwastes.The results show that Sr²⁺ adsorption capacity of ZF is good,and the equilibrium time for ZF to adsorb Sr²⁺ is in range of 5～14 days.Sr²⁺ concentration has the greatest effect on ZF adsorption capacity,and the medium,temperature and pH value of the solution also have effect on ZF adsorption capacity.With the augment of Sr²⁺ concentration,the Sr²⁺ equilibrium adsorption quantity of ZF increases,but the equilibrium adsorption rate and equilibrium adsorption ratio decreases.Sr²⁺ adsorption capacity of ZF improves with the augment of pH value.Sr²⁺ adsorption capacity of ZF is complicate and varies with the different ion,concentration and other components in the medium solution.Sr²⁺ adsorption capacity of ZF increases with the augment of temperature.As a whole,when Sr²⁺ concentration in the solution is 0.005mol/L,the pH value of the solution,and the temperature of medium and solution have less effect on the Sr²⁺ adsorption capacity of ZF,and the unit cell parameter of ZF adsorbed Sr²⁺ decreases.