[1A01-04] Vitrification

[1A01] Evaluation of HLW glass dissolution as a function of dissolved silica concentration under various pH conditions

*Toshihiro Kimachi¹, Yaohiro Inagaki¹, Kazuya Idemitsu¹, Tatsumi Arima¹ (1. Kyushu Univ.)

Keywords:HLW glass, dissolution kinetics, effects of pH, effects of dissolved silica concentration, Micro-Channel Flow-Through test method

Dissolution rate of HLW glass changes depending on environmental conditions such as pH and groundwater composition. In this study, we measured dissolution rate of international simple glass (ISG) as a function of dissolved silica concentration under various pH conditions by using a Micro-Channel Flow-Through test method with Si-29 enriched silica solution.