Diffusion of acetic acid, butyric acid, and butanol in compacted montmorillonite

Ishidera, Takamitsu 

Effective diffusion coefficients () of acetic acid, butyric acid, and butanol in compacted montmorillonite were determined by through-diffusion experiments and compared with those of iodide and deuterated water. The difference in values between acetic acid, butyric acid, and iodide could be attributed to the difference in their self-diffusion coefficient values, while this was not applicable to the values determined for butanol and deuterated water. This result suggests that the values of iodide can be converted to those of carboxylic acid and utilized for migration analysis of carbon-14 in the safety assessment of geological disposal.