The Synthesis of Zeolite A Ion Exchanger for Adsorption of Sr²⁺ and Cs⁺

Abstract

Zeolite A adsorbent has been prepared for adsorption of Sr²⁺ and Cs⁺. The present adsorbent has sufficient adsorption ability for both ions, of which adsorption achieved within 1 h. The adsorption mechanism for both ions is Langmuir type, and the maximum adsorption amount at equilibrium pH of 4.00 are 3.32 mmol/g for Sr²⁺ and 1.66 mmol/g for Cs⁺, respectively. Since the pH dependencies of the adsorption of Sr²⁺ and Cs⁺ are different, selective separation of Sr²⁺ and Cs⁺ is expected to be achieved.