Abstract: Taking clinoptilotite in Xinjiang as adsorbent, carried out the adsorption and desorption tests to the simulated radioactive waste water containing Cs⁺ prepared by CsNO₃, then discussed the isothermal absorption model and desorption dynamic behavior. The results show:clinoptilolite on removal rate of clinoptilolite to Cs⁺ reaches equilibrium after 16 h, the saturated dosage adsorption is at 196.99 mg/g, the isothermal absorption model is Langmuir moel; under the dosage of Clinoptilotite at 10 g/L, in order to insure the removal rate of Cs⁺ above 97%, the concentration of Cs⁺ in water must be less than 664.55 mg/L; the desorption dynamic behavior of clinoptilotite to Cs⁺ is suit to the description of index model, and it will take 99 d to fully desorb the saturated adsorption Cs⁺ in theoretically which proves the solid ability of clinoptilotite to Cs⁺.

Key words: Clinoptilotite, Simulated radioactive waste water containing Cs, Adsorption, Desorption