[2G08-12] Stabilization and Immobilization 1

[2G09] Leaching behavior of Cs from cement and geopolymer solidified forms of Cs adsorbent and fly ash

*Lang Lang¹, Kanako Toda¹, Takumi Saito¹ (1. UTokyo)

Keywords:geopolymer, cement, incineration ash, leaching, adsorbent, solidification, radioactive cesium

After the Fukushima Daiichi nuclear power plant accident, a great volume of incineration ash with radio-Cs (r-Cs) is produced and stored at the interim storage facility. Solidification of incineration ash or volume-reduced manners of r-Cs by adsorbents are candidate disposal forms. In this study, cement and geopolymer, stabilized zeolite and calcined ferrocyanide are considered as solidifying matrices and adsorbents, respectively. This research evaluates Cs leaching behaviors of various solidified forms.