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Diffusion behavior of humic acid in compacted bentonite, 2; Effect of dry density and ionic strength on the diffusion behavior

Iijima, Kazuki  ; Kurosawa, Seiichi*; Tobita, Minoru*; Kibe, Satoshi*

Diffusion behavior of humic acid in compacted bentonite was investigated by through-diffusion experiments under the conditions with various dry density and NaCl concentration. Limitation of filtration effect of the compacted bentonite with 1.2 Mg m$$^{-3}$$ of dry density in 1 mol dm$$^{-3}$$ of NaCl solution is around 3,000 of molecular weight, based on the molecular weight distribution of humic acid before and after the experiment measured by size exclusion chromatography.



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