Abstract
In this paper, an advection- dispersion equation for the pollutant concentration is solved assuming zero initial rate of pollutant. To solve the dispersion equation in unsteady state condition, the transformation technique has been used. .It is obtained that the concentration of the pollutants in a small river decreases continuously with increasing distance.
Keywords
- Concentration of pollutant
- Laplace transforms method
- Advection – dispersion
- Unsteady-state.