Open Access Research Paper Views (838) Using natural adsorbents to reduce polycyclic aromatic hydrocarbons contamination of oily wastewater Maryam Farahani, Azita Behbahaninia J. Biodiv. & Environ. Sci. 5(6), 274-281, December 2014. Keywords: Adsorption, Oily wastewater, Polycyclic aromatic hydrocarbons, Rice bran, Sawdust Details