Hydrocarbon pollution emission in the pilot and pulse condition in saturated porous media of soil

Hydrocarbon pollutants with negative polluting effects cause changes on physical and chemical properties of soil and water and threaten their quality and human safety. The purpose of this research was to investigate the heavy and light soils behavior on transportation of gasoline and kerosene in a pilot scale and pulse condition. An equipment including glassy cylinders has been designed. The bulk density and porosity of the soils have been determined. Then, the amount of half and one pore volume, gasoline and kerosene were applied. Glassy cylinders were filled with soil homogeneously in the given depth and soils were saturated by water. In this stage, half and one pore volume of the kerosene and gasoline were applied on saturated soils. Eventually, output volume of gasoline, kerosene and water has been measured per time. Finally the breakthrough curve were drawn. The results showed that both pollutants went through the loamy sand soil by less retention and more velocity in comparison with silty clay one. In both soils, gasoline retention was more than kerosene and kerosene flowed out of the light and heavy soils by sharper gradient and less retardation and more velocity. This difference in the output rate of pollutants from light soil is more distinct than heavy one. The results of this investigation can be applied for pollution emission assessment in terms of pulse pollution and quality of soil reaction versus these pollutants.