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http://hdl.handle.net/2445/185795
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DC Field | Value | Language |
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dc.contributor.author | Lopez Vinent, Núria | - |
dc.contributor.author | Cruz Alcalde, Alberto | - |
dc.contributor.author | Romero, L. E. | - |
dc.contributor.author | Chavez, M. E. | - |
dc.contributor.author | Marco Buj, Pilar | - |
dc.contributor.author | Giménez Farreras, Jaume | - |
dc.contributor.author | Esplugas Vidal, Santiago | - |
dc.date.accessioned | 2022-05-18T17:46:01Z | - |
dc.date.available | 2022-05-18T17:46:01Z | - |
dc.date.issued | 2019-12-15 | - |
dc.identifier.issn | 0304-3894 | - |
dc.identifier.uri | http://hdl.handle.net/2445/185795 | - |
dc.description.abstract | The photo-Fenton process, with UV-A LED (λ=380-390, 390-400 and 380-400 nm) has demonstrated to be effective in the abatement of a target micropollutant, such as diphenhydramine hydrochloride (DPH). Different concentrations of iron (Fe2+) and H2O2 were tested and monitored, and the best results in DPH removal were obtained for the highest concentrations of both iron (II) and H2O2 (10 mg Fe2+/L - 150 mg H2O2/L). The evolution of iron and peroxide concentration was also monitored. Kinetic studies showed that dark Fenton process prevails at the beginning of the experiment, when Fe2+ concentration is higher. However, after these initial moments, the prevailing process is photo-Fenton and, in addition, wavelength radiation plays an important role. Concerning the effect of radiation, four LEDs (4.2 W total power) were used, emitting radiation in the wavelength range between 380-390 or 390-400 nm. Similar results were obtained in both cases in DPH removal by photo-Fenton (30 min for total elimination). However, a synergistic effect was observed when two LEDs of 380-390 nm and two LEDs of 390-400 nm were used. Total power was the same (4.2 W) in each experimental condition, but the increase in the wavelength range to 20 nm (380-400 nm) produces an increase in the rate of DPH removal, achieving its total elimination at 15 min. This fact, with the use of a simple radiation model, reveals the important role that radiation plays in the photo-Fenton process. Finally, the formed intermediates were determined and some reaction pathways were proposed. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier B.V. | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1016/j.jhazmat.2019.120882 | - |
dc.relation.ispartof | Journal of Hazardous Materials, 2019, vol. 380 | - |
dc.relation.uri | https://doi.org/10.1016/j.jhazmat.2019.120882 | - |
dc.rights | cc-by-nc-nd (c) Elsevier B.V., 2019 | - |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | - |
dc.source | Articles publicats en revistes (Enginyeria Química i Química Analítica) | - |
dc.subject.classification | Intermediaris (Química) | - |
dc.subject.classification | Contaminants | - |
dc.subject.classification | Ferro | - |
dc.subject.other | Intermediates (Chemistry) | - |
dc.subject.other | Pollutants | - |
dc.subject.other | Iron | - |
dc.title | Synergies, radiation and kinetics in photo-Fenton process with UVA-LEDs | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 694709 | - |
dc.date.updated | 2022-05-18T17:46:01Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Enginyeria Química i Química Analítica) |
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File | Description | Size | Format | |
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694709.pdf | 680.13 kB | Adobe PDF | View/Open |
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