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International Journal of Photoenergy
Volume 2013 (2013), Article ID 578191, 11 pages
http://dx.doi.org/10.1155/2013/578191
Research Article

The Comparison of Photocatalytic Degradation and Decolorization Processes of Dyeing Effluents

1Department of General and Analytical Chemistry, Medical University of Silesia, Jagiellońska 4, 41-200 Sosnowiec, Poland
2Institute of Occupational Medicine and Environmental Health, Kościelna 13, 41-200 Sosnowiec, Poland

Received 18 September 2012; Revised 13 December 2012; Accepted 19 December 2012

Academic Editor: Leonardo Palmisano

Copyright © 2013 Ewa Adamek et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Treatment of dye effluents resulting from the industrial scale dyeing of cotton, polyacrylic fibres, leather, and flax fabrics by photocatalytic methods was investigated. Photocatalytic processes were initiated by UV-a light ( 366 nm) and were conducted in the presence of TiO2, TiO2/FeCl3, or FeCl3 as photocatalysts. It was found that the photocatalytic process carried out with TiO2 and TiO2/FeCl3 was the most effective method for decolorization of textile dyeing effluents and degradation of dyes, except for effluents containing very high concentrations of stable azo dyes. During the photocatalytic degradation of anionic dyes, a mixture of TiO2/FeCl3 was more effective, while in the case of cationic dyes, more suitable seems to be TiO2 alone.