Title: Determination of Diffusion Coefficients of Contaminant Ions in Clay Soil
Abstract: A special device is used to determine diffusion coefficients of contaminant ions (Cl -,K +,Ca 2+ ,Zn 2+ ,Cu 2+ ) in clay soil.Diffusion coefficients are calculated according to the equation,which is developed from the Fick's second law of diffusion.It is shown that the diffusion coefficient of anion Cl - through the clay samples is much larger than those of cations and there are obvious relations between diameters and electric conductivities of divalent cations and diffusion coefficients.It is also shown that adding cement to soil reduces the diffusion velocity of contaminant ions greatly.
Publication Year: 2003
Publication Date: 2003-01-01
Language: en
Type: article
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Cited By Count: 3
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