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Title: Degradation of Reactive Black 5 by Fenton/UV-C and ferrioxalate/H2O2/solar light processes
Authors: Lucas, Marco S.
Peres, Jose A.
Keywords: Textile wastewater
Reactive Black 5
Advanced Oxidation Processes
Fenton’s reagent
Ferrioxalate
UV-C radiation
Solar light
Issue Date: 2007
Publisher: © Elsevier Ltd
Citation: LUCAS, M.S. and PERES, J.A., 2007. Degradation of Reactive Black 5 by Fenton/UV-C and ferrioxalate/H2O2/solar light processes. Dyes and Pigments, 74 (3), pp.622-629
Abstract: The feasibility of employing different photoxidation systems, like Fenton/UV-C and ferrioxalate/H2O2/solar light in the decolorization and mineralization of an azo dye, has been investigated. Batch experiments were carried out to evaluate, on the first stage, the influence of different processes on Reactive Black 5 (RB5) decolorization. During the second stage were investigated the optimal operational conditions of Fenton/UVC and ferrioxalate/H2O2/solar light processes, like pH, H2O2 dosage, iron dosage, RB5 concentration and source of light. The experiments indicate that RB5 can be effectively decolorized using Fenton/UV-C and ferrioxalate/H2O2/solar light processes with a small difference between the two processes, 98.1% and 93.2%, respectively, after 30 min. Although there is lesser difference in dye decolorization, significant increment in TOC removal was found with Fenton/UV-C process (46.4% TOC removal) relative to ferrioxalate/H2O2/solar light process (29.6% TOC removal). This fact reveals that UV-C low-pressure mercury lamp although with its small effect on dye decolorization is particularly important in dye mineralization, when compared to solar light. However, ferrioxalate/H2O2/solar light system shows large potential on photochemical treatment of textile wastewater with particular interest from the economical point of view.
Description: This paper is closed access.
Version: Closed access
DOI: 10.1016/j.dyepig.2006.04.005
URI: https://dspace.lboro.ac.uk/2134/19775
Publisher Link: http://dx.doi.org/10.1016/j.dyepig.2006.04.005
ISSN: 0143-7208
Appears in Collections:Closed Access (Chemical Engineering)

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