“…Therefore, there is a growing interest in the development of phytoremediation, which is environment-friendly, less expensive and uses less energy. Therefore, many researches have studied the phytoremediation of organic contaminants such as polyaromatic hydrocarbons (PAHs) (Aprill and Sims, 1990;Siciliano et al, 2003), polychlorinated biphenyls (PCBs) (Donnelly et al, 1994) and hydrocarbons (Günther et al, 1996;Banks et al, 2003a;Kirk et al, 2005) by using different plant species in Europe and North America. Italian ryegrass, sorghum, maize and alfalfa are recognized as phytoremediators (Radwan et al, 1995;Wiltse et al, 1998;Pradhan et al, 1999;Châineau et al, 2000;Banks et al, 2003b;Parrish et al, 2004).…”