Electrochemical treatment of butylated hydroxyanisole: electrocoagulation versus advanced oxidation

This work compares the removal of butylated hydroxyanisole (BHA), a ubiquitous antioxidant in food and pharmaceuticals, from water either by electrocoagulation (EC) with an Fe|Fe cell or H2O2-based electrochemical advanced oxidation processes like electrochemical oxidation (EO-H2O2), electro-Fenton...

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Autores: Ye, Zhihong, Brillas, Enric, Centellas Masuet, Francesc A., Cabot Julià, Pere-Lluís, Sirés Sadornil, Ignacio
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/147417
Acceso en línea:https://hdl.handle.net/2445/147417
Access Level:acceso abierto
Palabra clave:Electrocoagulació
Oxidació electroquímica
Electrocoagulation
Electrolytic oxidation
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spelling Electrochemical treatment of butylated hydroxyanisole: electrocoagulation versus advanced oxidationYe, ZhihongBrillas, EnricCentellas Masuet, Francesc A.Cabot Julià, Pere-LluísSirés Sadornil, IgnacioElectrocoagulacióOxidació electroquímicaElectrocoagulationElectrolytic oxidationThis work compares the removal of butylated hydroxyanisole (BHA), a ubiquitous antioxidant in food and pharmaceuticals, from water either by electrocoagulation (EC) with an Fe|Fe cell or H2O2-based electrochemical advanced oxidation processes like electrochemical oxidation (EO-H2O2), electro-Fenton (EF) and photoelectro-Fenton (PEF) with an air-diffusion cathode. BHA degradation by EC was very poor, whereas the dissolved organic carbon (DOC) was more effectively abated in urban wastewater. The effect of pH, number of Fe|Fe pairs and current on the EC performance was examined. The additive was also slowly degraded by EO-H2O2 with a RuO2-based or BDD anode in 50 mM Na2SO4 solution. In the simulated matrix, BHA decay by EO-H2O2 was substantially enhanced owing to active chlorine generation from anodic oxidation of Cl−, whereas the OH-mediated oxidation at the BDD surface accounted for DOC decay. In EF and PEF, the OH produced in the bulk upgraded the mineralization, primordially using BDD. In raw urban wastewater at natural pH 7.9, the time course of BHA and DOC contents was affected by NOM oxidation, being accelerated in the order: EO-H2O2 < EF < PEF. The quickest decontamination of urban wastewater occurred in PEF at pH 3.0, because of the higher amounts of OH in the bulk along with UVA photolysis.Elsevier B.V.2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/147417Articles 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.seppur.2018.05.067Separation and Purification Technology, 2019, vol. 208, p. 19-26https://doi.org/10.1016/j.seppur.2018.05.067cc-by-nc-nd (c) Elsevier B.V., 2019http://creativecommons.org/licenses/by-nc-nd/3.0/esinfo:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1474172026-05-27T06:46:51Z
dc.title.none.fl_str_mv Electrochemical treatment of butylated hydroxyanisole: electrocoagulation versus advanced oxidation
title Electrochemical treatment of butylated hydroxyanisole: electrocoagulation versus advanced oxidation
spellingShingle Electrochemical treatment of butylated hydroxyanisole: electrocoagulation versus advanced oxidation
Ye, Zhihong
Electrocoagulació
Oxidació electroquímica
Electrocoagulation
Electrolytic oxidation
title_short Electrochemical treatment of butylated hydroxyanisole: electrocoagulation versus advanced oxidation
title_full Electrochemical treatment of butylated hydroxyanisole: electrocoagulation versus advanced oxidation
title_fullStr Electrochemical treatment of butylated hydroxyanisole: electrocoagulation versus advanced oxidation
title_full_unstemmed Electrochemical treatment of butylated hydroxyanisole: electrocoagulation versus advanced oxidation
title_sort Electrochemical treatment of butylated hydroxyanisole: electrocoagulation versus advanced oxidation
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 Electrocoagulació
Oxidació electroquímica
Electrocoagulation
Electrolytic oxidation
topic Electrocoagulació
Oxidació electroquímica
Electrocoagulation
Electrolytic oxidation
description This work compares the removal of butylated hydroxyanisole (BHA), a ubiquitous antioxidant in food and pharmaceuticals, from water either by electrocoagulation (EC) with an Fe|Fe cell or H2O2-based electrochemical advanced oxidation processes like electrochemical oxidation (EO-H2O2), electro-Fenton (EF) and photoelectro-Fenton (PEF) with an air-diffusion cathode. BHA degradation by EC was very poor, whereas the dissolved organic carbon (DOC) was more effectively abated in urban wastewater. The effect of pH, number of Fe|Fe pairs and current on the EC performance was examined. The additive was also slowly degraded by EO-H2O2 with a RuO2-based or BDD anode in 50 mM Na2SO4 solution. In the simulated matrix, BHA decay by EO-H2O2 was substantially enhanced owing to active chlorine generation from anodic oxidation of Cl−, whereas the OH-mediated oxidation at the BDD surface accounted for DOC decay. In EF and PEF, the OH produced in the bulk upgraded the mineralization, primordially using BDD. In raw urban wastewater at natural pH 7.9, the time course of BHA and DOC contents was affected by NOM oxidation, being accelerated in the order: EO-H2O2 < EF < PEF. The quickest decontamination of urban wastewater occurred in PEF at pH 3.0, because of the higher amounts of OH in the bulk along with UVA photolysis.
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/2445/147417
url https://hdl.handle.net/2445/147417
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.seppur.2018.05.067
Separation and Purification Technology, 2019, vol. 208, p. 19-26
https://doi.org/10.1016/j.seppur.2018.05.067
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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