Electro-Fenton process at mild pH using Fe(III)-EDDS as soluble catalyst and carbon felt as cathode

The feasibility of destruction of organic pollutants in water at near-neutral pH by homogeneous electro-Fenton (EF) process employing a soluble Fe(III)-EDDS complex as catalyst is demonstrated for the first time. The performance of the Fe(III)-EDDS-assisted EF process with carbon-felt or air-diffusi...

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Authors: Ye, Zhihong, Brillas, Enric, Centellas Masuet, Francesc A., Cabot Julià, Pere-Lluís, Sirés Sadornil, Ignacio
Format: article
Status:Versión aceptada para publicación
Publication Date:2019
Country:España
Institution:Universidad de Barcelona
Repository:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/147679
Online Access:https://hdl.handle.net/2445/147679
Access Level:Open access
Keyword:Oxidació electroquímica
Electrolytic oxidation
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spelling Electro-Fenton process at mild pH using Fe(III)-EDDS as soluble catalyst and carbon felt as cathodeYe, ZhihongBrillas, EnricCentellas Masuet, Francesc A.Cabot Julià, Pere-LluísSirés Sadornil, IgnacioOxidació electroquímicaElectrolytic oxidationThe feasibility of destruction of organic pollutants in water at near-neutral pH by homogeneous electro-Fenton (EF) process employing a soluble Fe(III)-EDDS complex as catalyst is demonstrated for the first time. The performance of the Fe(III)-EDDS-assisted EF process with carbon-felt or air-diffusion cathodes was evaluated from the degradation of butylated hydroxyanisole (BHA) in sulfate medium. The influence of applied current, pH and Fe(III):EDDS ratio and dosage on BHA decay and mineralization was related to the evolution of H2O2 and iron concentrations. Using Fe(III)-EDDS, up to 50% Fe(II) regeneration was achieved in 10 min, whereas only 23% was transformed using hydrated Fe3+. Almost total removal of BHA was achieved thanks to homogenous Fenton, heterogeneous Fenton with cathodically adsorbed Fe(III), and electrocatalysis. The mineralization partly corresponded to the gradual destruction of EDDS by hydroxyl radical (kabs = 5.22 × 109 M−1 s−1), and involved the formation of 5 oxidation and 6 dimerization or cyclization by-productsElsevier B.V.2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/147679Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: https://doi.org/10.1016/j.apcatb.2019.117907Applied Catalysis B-Environmental, 2019, vol. 257, num. 117907https://doi.org/10.1016/j.apcatb.2019.117907cc-by-nc-nd (c) Elsevier B.V., 2019http://creativecommons.org/licenses/by-nc-nd/3.0/esinfo:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1476792026-05-27T06:46:51Z
dc.title.none.fl_str_mv Electro-Fenton process at mild pH using Fe(III)-EDDS as soluble catalyst and carbon felt as cathode
title Electro-Fenton process at mild pH using Fe(III)-EDDS as soluble catalyst and carbon felt as cathode
spellingShingle Electro-Fenton process at mild pH using Fe(III)-EDDS as soluble catalyst and carbon felt as cathode
Ye, Zhihong
Oxidació electroquímica
Electrolytic oxidation
title_short Electro-Fenton process at mild pH using Fe(III)-EDDS as soluble catalyst and carbon felt as cathode
title_full Electro-Fenton process at mild pH using Fe(III)-EDDS as soluble catalyst and carbon felt as cathode
title_fullStr Electro-Fenton process at mild pH using Fe(III)-EDDS as soluble catalyst and carbon felt as cathode
title_full_unstemmed Electro-Fenton process at mild pH using Fe(III)-EDDS as soluble catalyst and carbon felt as cathode
title_sort Electro-Fenton process at mild pH using Fe(III)-EDDS as soluble catalyst and carbon felt as cathode
dc.creator.none.fl_str_mv Ye, Zhihong
Brillas, Enric
Centellas Masuet, Francesc A.
Cabot Julià, Pere-Lluís
Sirés Sadornil, Ignacio
author Ye, Zhihong
author_facet Ye, Zhihong
Brillas, Enric
Centellas Masuet, Francesc A.
Cabot Julià, Pere-Lluís
Sirés Sadornil, Ignacio
author_role author
author2 Brillas, Enric
Centellas Masuet, Francesc A.
Cabot Julià, Pere-Lluís
Sirés Sadornil, Ignacio
author2_role author
author
author
author
dc.subject.none.fl_str_mv Oxidació electroquímica
Electrolytic oxidation
topic Oxidació electroquímica
Electrolytic oxidation
description The feasibility of destruction of organic pollutants in water at near-neutral pH by homogeneous electro-Fenton (EF) process employing a soluble Fe(III)-EDDS complex as catalyst is demonstrated for the first time. The performance of the Fe(III)-EDDS-assisted EF process with carbon-felt or air-diffusion cathodes was evaluated from the degradation of butylated hydroxyanisole (BHA) in sulfate medium. The influence of applied current, pH and Fe(III):EDDS ratio and dosage on BHA decay and mineralization was related to the evolution of H2O2 and iron concentrations. Using Fe(III)-EDDS, up to 50% Fe(II) regeneration was achieved in 10 min, whereas only 23% was transformed using hydrated Fe3+. Almost total removal of BHA was achieved thanks to homogenous Fenton, heterogeneous Fenton with cathodically adsorbed Fe(III), and electrocatalysis. The mineralization partly corresponded to the gradual destruction of EDDS by hydroxyl radical (kabs = 5.22 × 109 M−1 s−1), and involved the formation of 5 oxidation and 6 dimerization or cyclization by-products
publishDate 2019
dc.date.none.fl_str_mv 2019
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/2445/147679
url https://hdl.handle.net/2445/147679
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.apcatb.2019.117907
Applied Catalysis B-Environmental, 2019, vol. 257, num. 117907
https://doi.org/10.1016/j.apcatb.2019.117907
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier B.V., 2019
http://creativecommons.org/licenses/by-nc-nd/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier B.V., 2019
http://creativecommons.org/licenses/by-nc-nd/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 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:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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