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Decolorization of the azo dye Reactive Black 5 by Fenton and photo-Fenton oxidation
Open accessAbstract
Abstract The oxidative decolorization of Reactive Black 5 (RB5) in aqueous solution has been studied using Fenton (H 2 O 2 /Fe 2+ ) and photo-Fenton (H 2 O 2 /Fe 2+ /UV) processes. This investigation reveals that both methods can remove the color of RB5. Batch experiments were carried out to investigate the process's optimal operational conditions: pH, H 2 O 2 dosage, Fe 2+ dosage, RB5 concentration and optimal [Fe 2+ ] 0 /[H 2 O 2 ] 0 /[RB5] 0 ratio, to obtain the bests results at low cost, render AOP competitive with other processes. The optimal conditions found were a ratio [H 2 O 2 ] 0 /[RB5] 0 of 4.9:1, a ratio [H 2 O 2 ] 0 /[Fe 2+ ] 0 of 9.6:1 and pH = 3.0. The decolorization experiments indicate that RB5 can be effectively decolorized using Fenton and photo-Fenton processes with a little difference between the two processes, 97.5% and 98.1%, respectively, for optimal conditions. This small difference in dye decolorization is not similar to TOC removal: with photo-Fenton process there is a significant increment (46.4% TOC removal) relatively to Fenton process (only 21.6% TOC removal). This fact indicates that although UV low-pressure mercury lamp has little effect on dye decolorization it is particularly important in dye mineralization.
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Cited by
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Treatments for Color Removal from Wastewater: State of the Art
Collivignarelli, M. C., Abbà, A., Carnevale Miino, M., & Damiani, S. (2019) · Journal of Environmental Management · doi:10.1016/j.jenvman.2018.11.094 · Cited by 324
Photodegradation of Reactive Black 5 in a ZnO/UV Slurry Membrane Reactor
Laohaprapanon, S., Matahum, J., Tayo, L., & You, S.-J. (2015) · Journal of the Taiwan Institute of Chemical Engineers · doi:10.1016/j.jtice.2014.11.017 · Cited by 66
Kaushal, J., Mahajan, P., & Kaur, N. (2021) · Environmental Science and Pollution Research · doi:10.1007/s11356-021-16672-7 · Cited by 38
Utilization of Prawn to Reduce the Value of BOD and COD of Textile Wastewater
Sela, S. K., Hossain, A. K. M. N.-U., Hussain, S. Z., & Hasan, N. (2020) · Cleaner Engineering and Technology · doi:10.1016/j.clet.2020.100021 · Cited by 22
Metadata
- Authors
- LUCAS, M., & PERES, J.
- Venue
- Dyes and Pigments
- Publisher
- Elsevier BV
- Published
- 2006
- Volume
- 71
- Issue
- 3
- Pages
- 236-244
- ISSN
- 0143-7208 (ISSN-L)
- OpenAlex
- W2020699033
- Cited by
- 760
- References
- 0
- FWCI
- 20.13
- Type
- journal article
- Language
- en
- Open access
- green
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- LUCAS, M., & PERES, J. (2006). Decolorization of the azo dye Reactive Black 5 by Fenton and photo-Fenton oxidation. Dyes and Pigments. https://doi.org/10.1016/j.dyepig.2005.07.007
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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