Effects of the Addition of Fe, Co on the Azo Dye Degradation Ability of Mn-Al Mechanically Alloyed Powders
Azo compounds are used in the textile and leather industry. A significant step during the azo dyes treatment of water is the degradation by breaking the N=N bonds. This break produces the decolorization of water. In this research work, 10% atomic of Fe or Co was added to produce ternary Mn-Al-rich,...
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MDPI AG
2020-11-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/12/1578 |
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| author | Wael Ben Mbarek Joan Saurina Lluisa Escoda Eloi Pineda Mohamed Khitouni Joan-Josep Suñol |
| author_facet | Wael Ben Mbarek Joan Saurina Lluisa Escoda Eloi Pineda Mohamed Khitouni Joan-Josep Suñol |
| author_sort | Wael Ben Mbarek |
| collection | DOAJ |
| description | Azo compounds are used in the textile and leather industry. A significant step during the azo dyes treatment of water is the degradation by breaking the N=N bonds. This break produces the decolorization of water. In this research work, 10% atomic of Fe or Co was added to produce ternary Mn-Al-rich, nanostructured, mechanically alloyed powders in order to improve the decolorization of Reactive Black 5 solutions and to check Fe and Co addition’s influence. The microstructure was followed by X-ray diffraction, the morphology and composition by electronic microscopy and energy-dispersive X-ray spectroscopy (EDS) microanalysis. The dye degradation was monitored with ultraviolet/visible absorption spectrophotometry. After degradation, the remaining organic compound was checked by high-performance liquid chromatography (HPLC) and the functional groups of the powdered alloys by infrared spectroscopy. Fe addition to Mn-Al displayed faster kinetics and a higher efficiency than the Co addition. The Mn-Al-Fe solution (0.25 g/100 mL) was fully decolorized in 5 min. On the other side, Mn-Al-Co powders were able to successfully decolorize the dyed solution in 10 min under the same conditions. Thus, nanocrystalline Fe-doped Mn-Al alloys are good candidates for use in the decolorization process, in comparison with Co-doped and other intermetallic particles. |
| first_indexed | 2024-03-10T14:34:40Z |
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| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T14:34:40Z |
| publishDate | 2020-11-01 |
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| spelling | doaj.art-24e2eacf65bb497b89d905e6069100402023-11-20T22:17:58ZengMDPI AGMetals2075-47012020-11-011012157810.3390/met10121578Effects of the Addition of Fe, Co on the Azo Dye Degradation Ability of Mn-Al Mechanically Alloyed PowdersWael Ben Mbarek0Joan Saurina1Lluisa Escoda2Eloi Pineda3Mohamed Khitouni4Joan-Josep Suñol5Department of Physics, Campus Montilivi, s/n University of Girona, 17003 Girona, SpainDepartment of Physics, Campus Montilivi, s/n University of Girona, 17003 Girona, SpainDepartment of Physics, Campus Montilivi, s/n University of Girona, 17003 Girona, SpainDepartment of Physics and nuclear Engineering, Campus Diagonal Besòs, Polytechnic University of Catalonia, 08019 Barcelona, SpainInorganic Chemistry Laboratory, UR-11-ES-73, University of Sfax, Sfax BP 1171, TunisiaDepartment of Physics, Campus Montilivi, s/n University of Girona, 17003 Girona, SpainAzo compounds are used in the textile and leather industry. A significant step during the azo dyes treatment of water is the degradation by breaking the N=N bonds. This break produces the decolorization of water. In this research work, 10% atomic of Fe or Co was added to produce ternary Mn-Al-rich, nanostructured, mechanically alloyed powders in order to improve the decolorization of Reactive Black 5 solutions and to check Fe and Co addition’s influence. The microstructure was followed by X-ray diffraction, the morphology and composition by electronic microscopy and energy-dispersive X-ray spectroscopy (EDS) microanalysis. The dye degradation was monitored with ultraviolet/visible absorption spectrophotometry. After degradation, the remaining organic compound was checked by high-performance liquid chromatography (HPLC) and the functional groups of the powdered alloys by infrared spectroscopy. Fe addition to Mn-Al displayed faster kinetics and a higher efficiency than the Co addition. The Mn-Al-Fe solution (0.25 g/100 mL) was fully decolorized in 5 min. On the other side, Mn-Al-Co powders were able to successfully decolorize the dyed solution in 10 min under the same conditions. Thus, nanocrystalline Fe-doped Mn-Al alloys are good candidates for use in the decolorization process, in comparison with Co-doped and other intermetallic particles.https://www.mdpi.com/2075-4701/10/12/1578mechanical alloyingreactive black 5decolorizationUV-visible spectrophotometryLC-MS analysis |
| spellingShingle | Wael Ben Mbarek Joan Saurina Lluisa Escoda Eloi Pineda Mohamed Khitouni Joan-Josep Suñol Effects of the Addition of Fe, Co on the Azo Dye Degradation Ability of Mn-Al Mechanically Alloyed Powders Metals mechanical alloying reactive black 5 decolorization UV-visible spectrophotometry LC-MS analysis |
| title | Effects of the Addition of Fe, Co on the Azo Dye Degradation Ability of Mn-Al Mechanically Alloyed Powders |
| title_full | Effects of the Addition of Fe, Co on the Azo Dye Degradation Ability of Mn-Al Mechanically Alloyed Powders |
| title_fullStr | Effects of the Addition of Fe, Co on the Azo Dye Degradation Ability of Mn-Al Mechanically Alloyed Powders |
| title_full_unstemmed | Effects of the Addition of Fe, Co on the Azo Dye Degradation Ability of Mn-Al Mechanically Alloyed Powders |
| title_short | Effects of the Addition of Fe, Co on the Azo Dye Degradation Ability of Mn-Al Mechanically Alloyed Powders |
| title_sort | effects of the addition of fe co on the azo dye degradation ability of mn al mechanically alloyed powders |
| topic | mechanical alloying reactive black 5 decolorization UV-visible spectrophotometry LC-MS analysis |
| url | https://www.mdpi.com/2075-4701/10/12/1578 |
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