Solar photocatalytic degradation of azo dye Reactive Black 5 in aqueous suspension of TiO 2

Soon-An Ong, Ohm Mar Min, Li-Ngee Ho, Yee-Shian Wong, Fahmi Muhammad Ridwan
2011 Journal of Water Reuse and Desalination  
Photocatalytic degradation of pollutants under solar light irradiation is an economically viable process and a very promising clean wastewater treatment technology. The aim of this study is to evaluate photocatalytic degradation of Reactive Black 5 (RB5) under natural sunlight irradiation with TiO 2 as photocatalyst. The effects of initial concentration of RB5, dosage of TiO 2 , with/without solar irradiation, with/without air sparging and pH solution were examined. The decolorization rate
more » ... orization rate improved with a higher dosage of TiO 2 , with sunlight irradiation and air sparging, and under acidic solution. The photocatalytic process not only decolorized the RB5 but also mineralized the intermediate products completely.
doi:10.2166/wrd.2011.053 fatcat:j6hs46pjizca3j37dc264hxizy