Sharif Digital Repository

Polyaromatic hydrocarbons are toxic compounds generally produced by combustion of explosives and petroleum materials. They cause soil and ground water contamination. PAHs are carcinogenic and lead to serious health problems for human and other living things; hence they should be removed from the environment. Soil washing technique has been one of methods applied for soil treatment during the years and surface active compounds like emulsifiers and surfactants have been introduced into washing process to improve the removal efficiency. On the other hand, synthetic surfactants made of chemicals and petroleum materials are not degradable and remain in the environment. To void this secondary...