Analyzing porosity of compacted bentonite via through diffusion method
摘要
The diffusion behavior of ReO4− (as a surrogate for 99TcO4−) and HSeO3− (as a surrogate for 79HSeO3−) in compacted Wyoming bentonite was investigated. A through-diffusion experiment was conducted to measure the effective diffusion coefficient and the accessible porosity at high salinity. Two multi-porosity models (MP1 and MP2) were employed to analyze the effect of compaction on the accessible porosity, the diffuse double-layer porosity, and the interlayer porosity. The diffuse double-layer porosity increased with increasing the external surface area.