Abstract: The paper studies the adsorption capacity of zeolite for simulated nuclide Sr²⁺ under different environment conditions (concentration, temperature, pH, media) and its adsorption mechanism, providing some references to the assessment of the disposal effect of medium and low radioactive radwastes. The experiments indicate that adsorptive equilibrium time of zeolite for Sr²⁺ is about 14 days. Its Sr²⁺ adsorption performance decreases with the rise of liquid phase temperature; is inferior at No.2, 3 and 4 media to that in No.1 medium; is greatly affected by the medium irons; and increases with the rise in solution pH value. The equilibrium adsorption of zeolite for Sr²⁺ increases while the equilibrium adsorption rate and ratio decrease with the rise of solution concentration.

Key words: Zeolite, Sr²⁺, Adsorption performance