[2B08-11] Geopolymer 2 and Alkali Activated Material

[2B08] Encapsulation of Cs and Sr in spent adsorbents by alkali activated materials

*Tsutomu Sato¹, Natatsawas Soonthornwiphat¹, Chaerun Raudhatul Islam¹, Yutaro Kobayashi¹, Kazuma Kuroda¹, Kanako Toda¹, Tsubasa Otake¹, Yogarajah Elakneswaran¹, John L. Provis² (1. Hokkaido Univ., 2. The University of Sheffield)

Keywords:Spent adsorbent, Treatment, Disposal, Alkali activated material, Solidified waste

Leaching experiments were conducted for solidified wastes embedded zeolite and titanate with Cs and Sr. As results of the experiments, the leaching rates of Cs and Sr from potassium type alkali activated material were limited than that from ordinary Portland cement. The results suggest that potassium type alkali activated material are excellent candidate matrix for immobilization of radioactive waste containing Cs and Sr.