Characterization of a flow-through electrochemical reactor for the degradation of ciprofloxacin by photoelectro-Fenton without external oxygen supply

This work reports the experimental characterization of an innovative electrolyzer designed for self-sustained H2O2 production and synchronized degradation of the antibiotic ciprofloxacin (CIP) by photoelectro-Fenton (PEF) process tested in recirculation operation mode. The flow-through electrochemic...

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Detalles Bibliográficos
Autores: Cornejo, Oscar M., Sirés Sadornil, Ignacio, Nava, José L.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2022
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/197085
Acceso en línea:https://hdl.handle.net/2445/197085
Access Level:acceso abierto
Palabra clave:Antibiòtics
Electroquímica
Depuració de l'aigua
Antibiotics
Electrochemistry
Water purification
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spelling Characterization of a flow-through electrochemical reactor for the degradation of ciprofloxacin by photoelectro-Fenton without external oxygen supplyCornejo, Oscar M.Sirés Sadornil, IgnacioNava, José L.AntibiòticsElectroquímicaDepuració de l'aiguaAntibioticsElectrochemistryWater purificationThis work reports the experimental characterization of an innovative electrolyzer designed for self-sustained H2O2 production and synchronized degradation of the antibiotic ciprofloxacin (CIP) by photoelectro-Fenton (PEF) process tested in recirculation operation mode. The flow-through electrochemical reactor comprises an arrangement of two alternated anodes and cathodes, using the anodic O2 generated from water oxidation at Ti|IrO2-Ta2O5 anodes to produce H2O2 at graphite-felt cathodes from the oxygen reduction reaction (ORR). The influence of the most relevant operation conditions such as the initial Fe2+ concentration, applied current density, liquid flow rate (Q) and initial CIP concentration was systematically examined during the electrolytic trials by analyzing the CIP concentration decay, solution mineralization, and time course of Fe2+ content. It is demonstrated that the H2O2 concentration attained with this reactor configuration is sufficient to run the PEF treatment without needing an air pump or compressor. Complete elimination of CIP was reached at 40 min, with mineralization current efficiency and electrolytic energy consumption of 42% and 0.25 kWh (g TOC)-1, respectively. Oxalic and oxamic acids were the final organic by-products of the destruction of CIP, which also yielded nitrate, ammonium, and fluoride ions. PEF outperformed other processes like anodic oxidation with cathodic H2O2 and electro-Fenton (EF), as revealed by comparing the degradation and mineralization profiles.Elsevier B.V.2023202420222023info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion41 p.application/pdfhttps://hdl.handle.net/2445/197085Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1016/j.cej.2022.140603Chemical Engineering Journal, 2022, vol. 455, p. 140603https://doi.org/10.1016/j.cej.2022.140603cc-by-nc-nd (c) Elsevier B.V., 2022https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1970852026-05-29T05:05:01Z
dc.title.none.fl_str_mv Characterization of a flow-through electrochemical reactor for the degradation of ciprofloxacin by photoelectro-Fenton without external oxygen supply
title Characterization of a flow-through electrochemical reactor for the degradation of ciprofloxacin by photoelectro-Fenton without external oxygen supply
spellingShingle Characterization of a flow-through electrochemical reactor for the degradation of ciprofloxacin by photoelectro-Fenton without external oxygen supply
Cornejo, Oscar M.
Antibiòtics
Electroquímica
Depuració de l'aigua
Antibiotics
Electrochemistry
Water purification
title_short Characterization of a flow-through electrochemical reactor for the degradation of ciprofloxacin by photoelectro-Fenton without external oxygen supply
title_full Characterization of a flow-through electrochemical reactor for the degradation of ciprofloxacin by photoelectro-Fenton without external oxygen supply
title_fullStr Characterization of a flow-through electrochemical reactor for the degradation of ciprofloxacin by photoelectro-Fenton without external oxygen supply
title_full_unstemmed Characterization of a flow-through electrochemical reactor for the degradation of ciprofloxacin by photoelectro-Fenton without external oxygen supply
title_sort Characterization of a flow-through electrochemical reactor for the degradation of ciprofloxacin by photoelectro-Fenton without external oxygen supply
dc.creator.none.fl_str_mv Cornejo, Oscar M.
Sirés Sadornil, Ignacio
Nava, José L.
author Cornejo, Oscar M.
author_facet Cornejo, Oscar M.
Sirés Sadornil, Ignacio
Nava, José L.
author_role author
author2 Sirés Sadornil, Ignacio
Nava, José L.
author2_role author
author
dc.subject.none.fl_str_mv Antibiòtics
Electroquímica
Depuració de l'aigua
Antibiotics
Electrochemistry
Water purification
topic Antibiòtics
Electroquímica
Depuració de l'aigua
Antibiotics
Electrochemistry
Water purification
description This work reports the experimental characterization of an innovative electrolyzer designed for self-sustained H2O2 production and synchronized degradation of the antibiotic ciprofloxacin (CIP) by photoelectro-Fenton (PEF) process tested in recirculation operation mode. The flow-through electrochemical reactor comprises an arrangement of two alternated anodes and cathodes, using the anodic O2 generated from water oxidation at Ti|IrO2-Ta2O5 anodes to produce H2O2 at graphite-felt cathodes from the oxygen reduction reaction (ORR). The influence of the most relevant operation conditions such as the initial Fe2+ concentration, applied current density, liquid flow rate (Q) and initial CIP concentration was systematically examined during the electrolytic trials by analyzing the CIP concentration decay, solution mineralization, and time course of Fe2+ content. It is demonstrated that the H2O2 concentration attained with this reactor configuration is sufficient to run the PEF treatment without needing an air pump or compressor. Complete elimination of CIP was reached at 40 min, with mineralization current efficiency and electrolytic energy consumption of 42% and 0.25 kWh (g TOC)-1, respectively. Oxalic and oxamic acids were the final organic by-products of the destruction of CIP, which also yielded nitrate, ammonium, and fluoride ions. PEF outperformed other processes like anodic oxidation with cathodic H2O2 and electro-Fenton (EF), as revealed by comparing the degradation and mineralization profiles.
publishDate 2022
dc.date.none.fl_str_mv 2022
2023
2023
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/197085
url https://hdl.handle.net/2445/197085
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1016/j.cej.2022.140603
Chemical Engineering Journal, 2022, vol. 455, p. 140603
https://doi.org/10.1016/j.cej.2022.140603
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier B.V., 2022
https://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier B.V., 2022
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 41 p.
application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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