Soil pollution is one of the most complicated issues that humanity faces in industrial and developing countries. Due to development of petrochemical refineries, large amounts of oil pollutants are released to the soils. There are many methods for remediation of oil from soil. Microwave irradiation, as a thermal method has a high potential to remediate soils contaminated by oil. The current study uses this method of remediation and compare physical and chemical soil properties before and after using microwave irradiation for remediation of oil from polluted soils of Shiraz Oil Refinery. For microwave remediation, we irradiated microwave for 15 min and the power was 1100 Watt. Result showed that Total Petroleum Hydrocarbons (TPHs) decrease in the soil and its removal efficiency was up to 80%. Because of decreasing TPHs, bulk density, and n increased and water repellency index, soil-water contact angle, ? and decreased after microwave irradiation. Generally, using microwave irradiation had a high TPHs efficiency removal potential and improved water repellency property and water retention capacity of soils. Keywords: TPHs, Microwave, Water repellency index, Soil-water contact angle, Shiraz Oil Refinery
