[1D11-14] Bentonite 2

[1D11] Diffusion behavior of radionuclides in natural bentonite samples with different properties

*Hiroto Sato¹, Shinichiro Uematsu², Naoko Watanabe², Tamotsu Kozaki², Toru Nagaoka³, Takahiro Goto⁴ (1. Graduate School of Engineering Hokkaido Univ., 2. Faculty of Engineering Hokkaido Univ., 3. CRIEPI, 4. NUMO)

Keywords:geological disposal, bentonite, diffusion, activation energy, anion exclusion

Non-steady-state diffusion experiments with HTO and anions were conducted using three natural bentonite samples with different properties. Diffusion process including the anion exclusion effect were discussed based on the ionic strength and the temperature dependences of apparent diffusion coefficients.