Degradation of the insecticide propoxur by electrochemical advanced oxidation processes using a boron-doped diamond/air-diffusion cell

A solution with 0.38 mM of the pesticide propoxur (PX) at pH 3.0 has been comparatively treated by electrochemical oxidation with electrogenerated H2O2 (EO-H2O2), electro-Fenton (EF) and photoelectro-Fenton (PEF). The trials were carried out with a 100 mL boron-doped diamond (BDD)/air-diffusion cell...

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Autores: Guelfi, Diego Roberta de Vieira, Gozzi, Fábio, Sirés Sadornil, Ignacio, Brillas, Enric, Machulek Jr., Amílcar, De Oliveira, Silvio César
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2017
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/155522
Acceso en línea:https://hdl.handle.net/2445/155522
Access Level:acceso abierto
Palabra clave:Oxidació electroquímica
Electrolytic oxidation
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spelling Degradation of the insecticide propoxur by electrochemical advanced oxidation processes using a boron-doped diamond/air-diffusion cellGuelfi, Diego Roberta de VieiraGozzi, FábioSirés Sadornil, IgnacioBrillas, EnricMachulek Jr., AmílcarDe Oliveira, Silvio CésarOxidació electroquímicaElectrolytic oxidationA solution with 0.38 mM of the pesticide propoxur (PX) at pH 3.0 has been comparatively treated by electrochemical oxidation with electrogenerated H2O2 (EO-H2O2), electro-Fenton (EF) and photoelectro-Fenton (PEF). The trials were carried out with a 100 mL boron-doped diamond (BDD)/air-diffusion cell. The EO-H2O2 process had the lowest oxidation ability due to the slow reaction of intermediates with ¿OH produced from water discharge at the BDD anode. The EF treatment yielded quicker mineralization due to the additional ¿OH formed between added Fe2+ and electrogenerated H2O2. The PEF process was the most powerful since it led to total mineralization by the combined oxidative action of hydroxyl radicals and UVA irradiation. The PX decay agreed with a pseudo-first-order kinetics in EO-H2O2, whereas in EF and PEF it obeyed a much faster pseudo-first-order kinetics followed by a much slower one, which are related to the oxidation of its Fe(II) and Fe(III) complexes, respectively. EO-H2O2 showed similar oxidation ability within the pH range 3.0-9.0. The effect of current density and Fe2+ and substrate contents on the performance of the EF process was examined. Two primary aromatic products were identified by LC-MS during PX degradation.Springer Verlag2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/155522Articles 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/10.1007/s11356-016-6416-8Environmental Science and Pollution Research, 2017, vol. 24, num. 7, p. 6083-6095https://doi.org/10.1007/s11356-016-6416-8(c) Springer Verlag, 2017info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1555222026-05-27T06:46:51Z
dc.title.none.fl_str_mv Degradation of the insecticide propoxur by electrochemical advanced oxidation processes using a boron-doped diamond/air-diffusion cell
title Degradation of the insecticide propoxur by electrochemical advanced oxidation processes using a boron-doped diamond/air-diffusion cell
spellingShingle Degradation of the insecticide propoxur by electrochemical advanced oxidation processes using a boron-doped diamond/air-diffusion cell
Guelfi, Diego Roberta de Vieira
Oxidació electroquímica
Electrolytic oxidation
title_short Degradation of the insecticide propoxur by electrochemical advanced oxidation processes using a boron-doped diamond/air-diffusion cell
title_full Degradation of the insecticide propoxur by electrochemical advanced oxidation processes using a boron-doped diamond/air-diffusion cell
title_fullStr Degradation of the insecticide propoxur by electrochemical advanced oxidation processes using a boron-doped diamond/air-diffusion cell
title_full_unstemmed Degradation of the insecticide propoxur by electrochemical advanced oxidation processes using a boron-doped diamond/air-diffusion cell
title_sort Degradation of the insecticide propoxur by electrochemical advanced oxidation processes using a boron-doped diamond/air-diffusion cell
dc.creator.none.fl_str_mv Guelfi, Diego Roberta de Vieira
Gozzi, Fábio
Sirés Sadornil, Ignacio
Brillas, Enric
Machulek Jr., Amílcar
De Oliveira, Silvio César
author Guelfi, Diego Roberta de Vieira
author_facet Guelfi, Diego Roberta de Vieira
Gozzi, Fábio
Sirés Sadornil, Ignacio
Brillas, Enric
Machulek Jr., Amílcar
De Oliveira, Silvio César
author_role author
author2 Gozzi, Fábio
Sirés Sadornil, Ignacio
Brillas, Enric
Machulek Jr., Amílcar
De Oliveira, Silvio César
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Oxidació electroquímica
Electrolytic oxidation
topic Oxidació electroquímica
Electrolytic oxidation
description A solution with 0.38 mM of the pesticide propoxur (PX) at pH 3.0 has been comparatively treated by electrochemical oxidation with electrogenerated H2O2 (EO-H2O2), electro-Fenton (EF) and photoelectro-Fenton (PEF). The trials were carried out with a 100 mL boron-doped diamond (BDD)/air-diffusion cell. The EO-H2O2 process had the lowest oxidation ability due to the slow reaction of intermediates with ¿OH produced from water discharge at the BDD anode. The EF treatment yielded quicker mineralization due to the additional ¿OH formed between added Fe2+ and electrogenerated H2O2. The PEF process was the most powerful since it led to total mineralization by the combined oxidative action of hydroxyl radicals and UVA irradiation. The PX decay agreed with a pseudo-first-order kinetics in EO-H2O2, whereas in EF and PEF it obeyed a much faster pseudo-first-order kinetics followed by a much slower one, which are related to the oxidation of its Fe(II) and Fe(III) complexes, respectively. EO-H2O2 showed similar oxidation ability within the pH range 3.0-9.0. The effect of current density and Fe2+ and substrate contents on the performance of the EF process was examined. Two primary aromatic products were identified by LC-MS during PX degradation.
publishDate 2017
dc.date.none.fl_str_mv 2017
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/2445/155522
url https://hdl.handle.net/2445/155522
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/10.1007/s11356-016-6416-8
Environmental Science and Pollution Research, 2017, vol. 24, num. 7, p. 6083-6095
https://doi.org/10.1007/s11356-016-6416-8
dc.rights.none.fl_str_mv (c) Springer Verlag, 2017
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Springer Verlag, 2017
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
publisher.none.fl_str_mv Springer Verlag
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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score 15.298079

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