Role of micropores within minerals in retardation of mass transfer by matrix diffusion and sorption in granitic rock.

ABSTRACT: Understanding the mass transfer characteristics of matrix diffusion and sorption is important in the safety assessment of geological disposal of high-level radioactive waste in crystalline rock (granite) by contributing to radionuclide retardation through mass transfer within the rock body. We present a comparative discussion of the effective diffusion coefficient (De), porosity, and petrological data for rock samples collected from the Toki Granite in central Japan, to evaluate the role of micropores within minerals in retardation by matrix diffusion and sorption in granitic rocks. De was derived from the through-diffusion experiments using uranine, barium, strontium, and chloride ions as tracers. Petrological data consist of the fracture frequency, the extent of hydrotherma

SUBMITTER: Yuguchi T 

PROVIDER: S-EPMC11409129 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature