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

Ishidera, Takamitsu 

Effective diffusion coefficients (${it D$_{e}$}$) 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 ${it D$_{e}$}$ 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 ${it D$_{e}$}$ values determined for butanol and deuterated water. This result suggests that the ${it D$_{e}$}$ 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.

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Category:Chemistry, Analytical

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