[1B04-08] Sorption and separation

11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)

[1B07] Ion-exchange properties of Cs(I) and Sr(II) in various zeolites and their applicability to simultaneous removal

*Taeyi Nam¹, Shunsaku Yasumura¹, Minoru Matsukura¹, Masaru Ogura¹ (1. UTokyo)

Keywords:

Zeolite,Ion-exchange behavior,Cs(I),Sr(II)

To achieve more efficient capture of Cs(I) and Sr(II) remaining in the environment, various zeolites with different framework structures, SiO₂/Al₂O₃ ratios, and charge-compensating cations, including LTA, FAU, MOR, MFI, and CHA, were investigated to clarify the differences in Cs(I) and Sr(II) ion-exchange behavior. The results revealed that Cs(I) uptake strongly depends on the zeolite framework structure, whereas Sr(II) uptake is mainly governed by the presence of Al pair sites.