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FEM Analysis of Contaminant Transport in a Loamy Desert Soil
Publié en 2008
In the present work, transport and adsorption of contaminants (lead, cesium) on loamy desert soil was modeled using the Finite Element Method (FEM). The Advective dispersion reaction mechanism was employed to describe the contaminant transport in soil medium.
A partial differential equation (PDE) obtained from unsteady mass balance was developed using convective diffusion, solute adsorption, and dispersion terms. The adsorption isotherm equation was coupled with an Advective Dispersion Reaction (ADR) equation and the resulting unsteady nonlinear PDE was solved using COMSOL Multiphysics. Breakthrough profiles for adsorption that were obtained from modeling agree well with the experimental results.
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