Polluted porous media biological decontamination

Some kind of pollutant, particularly hydrocarbon, can be removed from the polluted subsoil by means of micro organism activity. Oxygen is required during the biodegradation process and therefore air is injected in the subsoil. A multiphase and multicomponent mathematical model describing the biodegradation process in a unsaturated porous media will be presented. The movement of the different fluids in the porous media and the dynamic of the bacteria population will be described.