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DC Field | Value | Language |
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dc.contributor.author | Thiam, Abdoulaye | - |
dc.contributor.author | Salazar, Ricardo | - |
dc.contributor.author | Brillas, Enric | - |
dc.contributor.author | Ignés i Mullol, Jordi | - |
dc.date.accessioned | 2020-06-11T07:49:07Z | - |
dc.date.available | 2022-06-02T05:10:17Z | - |
dc.date.issued | 2020-06-02 | - |
dc.identifier.issn | 0301-4797 | - |
dc.identifier.uri | http://hdl.handle.net/2445/165140 | - |
dc.description.abstract | The degradation of the antibiotic thiamphenicol has been studied by photoelectro-Fenton (PEF) process with UVA light using pyrite particles as catalyst source. Pyrite is a sulfide mineral that naturally acidifies the reaction medium and releases Fe2+, thus promoting the effective generation of ¿OH from Fenton's reaction. The assays were made in an IrO2/air-diffusion cell, which yielded similar results to a boron-doped diamond (BDD)/air-diffusion one at a lower cost. In dark conditions, electro-Fenton (EF) process showed an analogous ability for drug removal, but mineralization was much poorer because of the large persistence of highly stable by-products. Their photolysis explained the higher performance of PEF. Conventional homogeneous PEF directly using dissolved Fe2+ exhibited a lower mineralization power. This suggests the occurrence of heterogeneous Fenton's reaction over the pyrite surface. The effect of current density and drug content on pyrite-catalyzed PEF performance was examined. The drug heteroatoms were gradually converted into SO42-, Cl- and NO3- ions. Nine aromatic derivatives and two dichloroaliphatic amines were identified by GC-MS, and five short-chain carboxylic acids were detected by ion-exclusion HPLC. A reaction route for thiamphenicol mineralization by PEF process with continuous H2O2 and Fe2+ supply on site is proposed. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1016/j.jenvman.2020.110835 | - |
dc.relation.ispartof | Journal of Environmental Management, 2020, vol. 270, p. 110835 | - |
dc.relation.uri | https://doi.org/10.1016/j.jenvman.2020.110835 | - |
dc.rights | cc-by-nc-nd (c) Elsevier, 2020 | - |
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 | Antibiòtics | - |
dc.subject.classification | Catàlisi | - |
dc.subject.classification | Oxidació electroquímica | - |
dc.subject.other | Antibiotics | - |
dc.subject.other | Catalysis | - |
dc.subject.other | Electrolytic oxidation | - |
dc.title | In-situ dosage of Fe2+ catalyst using natural pyrite for thiamphenicol mineralization by photoelectro-Fenton process | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 701500 | - |
dc.date.updated | 2020-06-11T07:49:07Z | - |
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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701500.pdf | 547.24 kB | Adobe PDF | View/Open |
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