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

SoonAn Ong | Zendy; Ohm Mar Min | Zendy; LiNgee Ho | Zendy; YeeShian Wong | Zendy; Muhammad Ridwan Fahmi | Zendy

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

Author(s) -

SoonAn Ong,

Ohm Mar Min,

LiNgee Ho,

YeeShian Wong,

Muhammad Ridwan Fahmi

Publication year - 2011

Publication title -

journal of water reuse and desalination

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.548

H-Index - 16

eISSN - 2408-9370

pISSN - 2220-1319

DOI - 10.2166/wrd.2011.053

Subject(s) - photocatalysis , degradation (telecommunications) , irradiation , chemistry , wastewater , air sparging , aqueous solution , suspension (topology) , sunlight , waste management , pulp and paper industry , nuclear chemistry , chemical engineering , environmental engineering , environmental remediation , contamination , environmental science , catalysis , organic chemistry , telecommunications , ecology , physics , mathematics , astronomy , homotopy , computer science , nuclear physics , pure mathematics , engineering , biology

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 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.

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