| dc.description.abstract | The transport of solutes through porous media where chemicals undergo adsorption or
change process on the surface of the porous materials has been a subject of research over
years. Usage of pesticides has resulted in production of diverse quantity and quality for
the market and disposal of excess. material has also become an acute problem. The
concept of adsorption is essential in determining the movement pattern of pesticides in
soil in order to asses the effect of migrating chemical, from their disposal sites, on the
quality of ground water. In the study of movement of pesticides in the soil, the
mathematical models so far developed only consider axial movement. The contribution of
radial movement to the overall location of solutes in the porous media seems to have
been disregarded by researchers in this field. The objective of this study is to close this
gap by developing a mathematical model to determine the combine radial and axial
movement of pesticides due to Convective - Dispersive transport of pesticides with
steady - state water flow in a porous media.
The methodology will involve determining the comprehensive dispersion equation
accounting for both axial and radial movement of solutes in the porous media and finding
the solution of the governing equation using finite difference methods. The solution of
this equation will be applied to the data from experiments carried out on adsorption and
movement of selected pesticides at hi~h concentration by soil department, University of
Florida, Gainesville U.S.A. We will confme our study to single - Region Flow and
Transport. | en_US |
