“…Over the last decade several studies have been conducted on the performance of hydrogen peroxide (H 2 O 2 ) and ultraviolet (UV) light in an advanced oxidation process (AOP) which has been successfully utilised for the treatment of various refractory (Doré, 1989;Sundstrom et al, 1990;Legrini et al, 1993;Sapach and Viraghan, 1998;Ho and Bolton, 1998;Von Gunten and Oliveras (1997); Shiraishi et al, 1999;Wenzel et al, 1999;Huston and Pignatello, 1999;Ince, 1999;Wang and Hong, 1999;Andreozzi et al, 2000a;Chiron et al, 2000). These previous studies have given the effect of initial H 2 O 2 concentration, initial concentration of the recalcitrant pollutants, and of time and UV light on the performance of the AOP process.…”