Photocatalytic Decolorization of an Azo Dye Derivative, Acid Yellow 29 in Aqueous Suspension of Titania

Title:Photocatalytic Decolorization of an Azo Dye Derivative, Acid Yellow 29 in Aqueous Suspension of Titania

Volume: 3 Issue: 1

Author(s): Abuzar Khan, Niyaz A. Mir, Mohammad Muneer and Zaki S Seddigi

Affiliation:

Keywords: Acid Yellow 29, azo dye derivation, photocatalytic decolorization, titanium dioxide.

Abstract: Photocatalyzed decolorization of an azo dye Acid Yellow 29 has been examined under UV -light irradiation by monitoring the change in absorption intensity as a function of irradiation time under a variety of conditions. The reaction was carried out in an immersion well photochemical reactor using titanium dioxide (TiO₂) as photocatalyst. The effect of operating parameters such as catalyst type, catalyst quantity, substrate concentration, pH and electron acceptors (H₂O₂ and KBrO₃,) on decolorization efficiency have been discussed. The photodecolorization of the dye Acid Yellow 29 was also examined under sunlight and the decolorization efficiency was compared with UV-light source. The maximum decolorization of the dye was observed at pH 3.2 with catalyst loading of 2.0 gL^-1. Addition of KBrO₃ as electron acceptor showed pronounced effect for the decolorization of the dye under investivation. Results demonstrated that the TiO₂ mediated photocatalytic process can effectively decolorize Acid Yellow 29 under UV-light radiations.

Cite this article as:

Khan Abuzar, Mir A. Niyaz, Muneer Mohammad and Seddigi S Zaki, Photocatalytic Decolorization of an Azo Dye Derivative, Acid Yellow 29 in Aqueous Suspension of Titania, Current Catalysis 2014; 3 (1) . https://dx.doi.org/10.2174/22115447113026660021