Solar photocatalytic degradation of azo dye Reactive Black 5 in aqueous suspension of TiO2

Journal of Water Reuse and Desalination

Ong, Soon-An¹  Wong, Yee-Shian¹  Min, Ohm Mar¹  Ridwan, Fahmi Muhammad¹  Ho, Li-Ngee² 

[1] School of Environmental Engineering, University Malaysia Perlis, 02600 Arau, Perlis, Malaysia;School of Material Engineering, University Malaysia Perlis, 02600 Arau, Perlis, Malaysia

关键词: azo dye;    photocatalytic degradation;    Reactive Black 5;    solar irradiation;    TiO2;   

DOI  :  10.2166/wrd.2011.053

学科分类：工程和技术（综合）

来源: IWA Publishing

【 摘 要 】

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 TiO2 as photocatalyst. The effects of initial concentration of RB5, dosage of TiO2, with/without solar irradiation, with/without air sparging and pH solution were examined. The decolorization rate improved with a higher dosage of TiO2, 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.

【 授权许可】

CC BY-NC-ND