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Photocatalytic Removal of Reactive Black-5 Dye from Aqueous Solution by UV Irradiation in Aqueous TiO2: Equilibrium and Kinetics Study
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Mehdi Shirzad Siboni
Published/Copyright:
November 30, 2016
Abstract
In this work, photocatalytic oxidation of reactive Black-5(RB-5) dye was investigated with illuminated TiO2. Effects of various parameters such as catalyst loading, contact time, pH and initial dye concentration on the removal efficiency of RB-5 dye was studied. Oxidation and adsorption were recognized as significant processes for the removal of RB-5 dye. Removal of RB-5 dye decreased with increasing pH and initial dye concentration. TiO2 dosage was an important parameter for the removal of RB-5 dye. As the TiO2 dosage increased up to 1 g/L TiO2, the removal efficiency of RB-5 dye was continuously enhanced. Removal trend of RB-5 was fitted well with the pseudo-first-order equation. From this work, it is possible to suggest that photocatalytic reaction with illuminated TiO2 can be effectively applied to treat industrial wastewater contaminated with dyes.
Received: 2011-3-9
Revised: 2011-6-1
Accepted: 2011-6-14
Published Online: 2016-11-30
Published in Print: 2011-7-1
© 2016 by Walter de Gruyter Berlin/Boston
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