Abstract
The degradation of a model mixture composed of Acid Yellow 36 (AY36) and Methyl Orange (MO) azo dyes was performed using the photo-Fenton process (PFP). The performance of this process conducted under artificial UV light (365 nm) was compared with the Fenton reaction. Some important operating parameters that affect the degradation of azo dyes, such as initial Fe2+ and H2O2 concentrations and the presence or absence of chloride ions, were investigated. Decolorisation of the dye mixture sample was achieved in 70 min with the photo-Fenton reaction, while the complete mineralization evaluated by TOC abatement was completed in 180 min. These results provide important knowledge for the treatment of wastewater containing azo dye mixtures by Fenton and photo-Fenton oxidation processes.
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This paper is published as part of the themed issue of contributions from the 6th European Meeting on Solar Chemistry and Photocatalysis: Environmental Applications held in Prague, Czech Republic, June 2010.
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Macías-Sánchez, J., Hinojosa-Reyes, L., Guzmán-Mar, J.L. et al. Performance of the photo-Fenton process in the degradation of a model azo dye mixture. Photochem Photobiol Sci 10, 332–337 (2011). https://doi.org/10.1039/c0pp00158a
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DOI: https://doi.org/10.1039/c0pp00158a