2020 Fall Meeting

Presentation information

Oral presentation

V. Nuclear Fuel Cycle and Nuclear Materials » 505-2 Waste Disposal and Its Environmental Aspects

[2D03-06] Waste

Thu. Sep 17, 2020 10:35 AM - 11:45 AM Room D (Zoom room 4)

Chair:Takumi Saito(Univ. of Tokyo)

10:50 AM - 11:05 AM

[2D04] Encapsulation mechanisms of Cs and Sr in spent adsorbents by alkali activated materials

*Tsutomu Sato1, Soonthornwiphat Natatsawas2, Chaerun Rislam2, Yutaro Kobayashi2, Kazuma Kuroda2, Kanako Toda2, Tsubasa Otake1, Elakneswaran Yogarajah1, John Provis3 (1. Faculty of Engineering, Hokkaido University, 2. Graduate School of Engineering, Hokkaido University, 3. The University of Shefield )

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

CsおよびSrを吸着させたゼオライトおよびチタン酸塩に対して、アルカリ活性固化材料によって固化した模擬固化体の浸出実験を行った結果、K型アルカリ活性固化材料によりCsおよびSrの浸出は大きく遅延できることおよびそのメカニズムが明らかとなった。