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http://hdl.handle.net/2445/152982
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DC Field | Value | Language |
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dc.contributor.author | Dos Santos, Alexsandro Jhones | - |
dc.contributor.author | Sirés Sadornil, Ignacio | - |
dc.contributor.author | Martínez-Huitle, Carlos Alberto | - |
dc.contributor.author | Brillas, Enric | - |
dc.date.accessioned | 2020-03-18T10:56:06Z | - |
dc.date.available | 2020-07-23T05:10:27Z | - |
dc.date.issued | 2018-07-23 | - |
dc.identifier.issn | 0045-6535 | - |
dc.identifier.uri | http://hdl.handle.net/2445/152982 | - |
dc.description.abstract | Mixtures of monoazo Tartrazine, diazo Ponceau SS and triazo Direct Blue 71 dyes with 105 mg L-1 of total organic carbon (TOC) in 0.050 M Na2SO4 at pH 3.0 have been treated by solar photoelectro-Fenton (SPEF). Experiments were carried out in a 2.5 L pre-pilot plant with a Pt/air-diffusion cell coupled to a solar planar photoreactor. Comparative trials were made by anodic oxidation with electrogenerated H2O2 (AO-H2O2) and electro-Fenton (EF) to better understand the role of oxidizing agents. AO-H2O2 gave poor degradation due to the low oxidation ability of ●OH formed at the Pt anode and H2O2 produced at the cathode. Similar color removal was achieved in EF and SPEF because the main oxidant was ●OH formed in the bulk from Fenton's reaction. EF yielded partial mineralization by formation of molecules with high stability against ●OH. In contrast, these by-products were rapidly photolyzed under sunlight irradiation in SPEF, which was the most powerful treatment. Up to 8 linear final carboxylic acids were detected, along with the release of sulfate and ammonium ions. The effect of Fe2+ and azo dye concentrations, and current density over the SPEF performance was assessed. Total mineralization of azo dyes mixtures occurred when operating up to 105 mg L-1 TOC with 0.50 mM Fe2+ at 100 mA cm-2. | - |
dc.format.extent | 8 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier Ltd | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1016/j.chemosphere.2018.07.116 | - |
dc.relation.ispartof | Chemosphere, 2018, vol. 210, p. 1137-1144 | - |
dc.relation.uri | https://doi.org/10.1016/j.chemosphere.2018.07.116 | - |
dc.rights | cc-by-nc-nd (c) Elsevier Ltd, 2018 | - |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es | - |
dc.source | Articles publicats en revistes (Ciència dels Materials i Química Física) | - |
dc.subject.classification | Depuració de l'aigua | - |
dc.subject.classification | Oxidació electroquímica | - |
dc.subject.other | Water purification | - |
dc.subject.other | Electrolytic oxidation | - |
dc.title | Total mineralization of mixtures of Tartrazine, Ponceau SS and Direct Blue 71 azo dyes by solar photoelectro-Fenton in pre-pilot plant | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 681466 | - |
dc.date.updated | 2020-03-18T10:56:06Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Ciència dels Materials i Química Física) |
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File | Description | Size | Format | |
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681466.pdf | 1.39 MB | Adobe PDF | View/Open |
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