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A Reliable method of obtaining Breakthrough Curves of ions in Soils using Transport Equation

Naik, Maya SN and Reddy, Hari Prasad P and Sivapullaiah, PV (2008) A Reliable method of obtaining Breakthrough Curves of ions in Soils using Transport Equation. In: The 12th International Conference of International Association for Computer Methods and Advances in Geomechanics (IACMAG), 1-6 October, 2008, Goa, India.

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Abstract

Molecular diffusion plays a dominant role in transport of contaminants through fine-grained soils with low hydraulic conductivity. Attenuation processes occur while contaminants travel through the soils. Effective diffusion coefficient (De) is expected to take into consideration various attenuation processes. Effective diffusion coefficient has been considered to develop a general approach for modelling of contaminant transport in soils.The effective diffusion coefficient of sodium in presence of sulphate has been obtained using the column test.The reliability of De, has been checked by comparing theoretical breakthrough curves of sodium ion in soils obtained using advection diffusion equation with the experimental curve.

Item Type: Conference Paper
Keywords: cation exchange capacity;clays;diffusion coefficient; hydraulic conductivity
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 23 Sep 2011 08:49
Last Modified: 23 Sep 2011 08:49
URI: http://eprints.iisc.ernet.in/id/eprint/40748

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