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    Finite Difference Method for Computation of 1D Pollutant Migration through Saturated Homogeneous Soil Media

    Source: International Journal of Geomechanics:;2011:;Volume ( 011 ):;issue: 001
    Author:
    Ritwik Chakraborty
    ,
    Ambarish Ghosh
    DOI: 10.1061/(ASCE)GM.1943-5622.0000068
    Publisher: American Society of Civil Engineers
    Abstract: The physical processes such as advection, dispersion, and diffusion and interaction between the solution and the soil solids such as sorption, biodegradation, and retention processes have been considered in the governing equation used in the present study. Finite difference method has been adopted herein to solve the one-dimensional contaminant transport model to predict the pollutant migration through soil in waste landfill. In the finite difference technique, the velocity field is first determined within a hydrologic system, and these velocities are then used to calculate the rate of contaminant migration by solving the governing equation. A total of seven contaminants have been chosen for analysis to represent a wide variety of wastes both organic and inorganic. A computer software CONTAMINATE has been developed for solution of the contaminant transport model. Results of this study have been compared with existing analytical solution for validation of the proposed solution technique. Design charts for liners have also been developed to facilitate the designers. The liner thickness has been optimized by considering the effect of velocity of advection, dispersion coefficient, and geochemical reactions for all the contaminants of this study.
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      Finite Difference Method for Computation of 1D Pollutant Migration through Saturated Homogeneous Soil Media

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/61463
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    • International Journal of Geomechanics

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    contributor authorRitwik Chakraborty
    contributor authorAmbarish Ghosh
    date accessioned2017-05-08T21:45:16Z
    date available2017-05-08T21:45:16Z
    date copyrightFebruary 2011
    date issued2011
    identifier other%28asce%29gm%2E1943-5622%2E0000079.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/61463
    description abstractThe physical processes such as advection, dispersion, and diffusion and interaction between the solution and the soil solids such as sorption, biodegradation, and retention processes have been considered in the governing equation used in the present study. Finite difference method has been adopted herein to solve the one-dimensional contaminant transport model to predict the pollutant migration through soil in waste landfill. In the finite difference technique, the velocity field is first determined within a hydrologic system, and these velocities are then used to calculate the rate of contaminant migration by solving the governing equation. A total of seven contaminants have been chosen for analysis to represent a wide variety of wastes both organic and inorganic. A computer software CONTAMINATE has been developed for solution of the contaminant transport model. Results of this study have been compared with existing analytical solution for validation of the proposed solution technique. Design charts for liners have also been developed to facilitate the designers. The liner thickness has been optimized by considering the effect of velocity of advection, dispersion coefficient, and geochemical reactions for all the contaminants of this study.
    publisherAmerican Society of Civil Engineers
    titleFinite Difference Method for Computation of 1D Pollutant Migration through Saturated Homogeneous Soil Media
    typeJournal Paper
    journal volume11
    journal issue1
    journal titleInternational Journal of Geomechanics
    identifier doi10.1061/(ASCE)GM.1943-5622.0000068
    treeInternational Journal of Geomechanics:;2011:;Volume ( 011 ):;issue: 001
    contenttypeFulltext
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