[1C01-07] Waste

[1C03] Evaluation of HLW glass dissolution rate as a function of dissolved silica concentration using Si isotopes

*Ryosuke Kato¹, Yaohiro Inagaki¹, Tatsumi Arima¹, Kazuya Idemitsu¹, Keita Mutou¹, Sanae Shibutani² (1. Kyushu Univ., 2. NUMO)

Keywords:HLW glass, dissolution kinetics, Si isotopes, Micro-Channel Flow-Through test method

Dissolution rate of HLW glass changes depending on glass composition and vrious environmental parameters (temperature, pH, ground water composition).
In this study, we measured and evaluated glass dissolution rate for ISG as a function of dissolved silica concentration by using a Micro-Cannel Flow-Through test method with Si-29 enriched silica solution.