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Removal of pesticide 2,4-D by conductive-diamond photoelectrochemical oxidation

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dc.contributor.author Souza, F.L.
dc.contributor.author Saez, C.
dc.contributor.author Lanza, Marcos R. V.
dc.contributor.author Cañizares Cañizares, Pablo
dc.contributor.author Rodrigo Rodrigo, Manuel Andrés
dc.date.accessioned 2016-05-10T10:42:21Z
dc.date.available 2016-05-10T10:42:21Z
dc.date.issued 2016-01
dc.identifier.citation Applied Catalysis B: Environmental. Volume 180, January 2016, Pages 733–739 es_ES
dc.identifier.issn 0926-3373
dc.identifier.uri http://hdl.handle.net/10578/9246
dc.description.abstract In this work, the removal of pesticide 2,4-D by single photolysis, electrolysis with BDD anode and a combined UV irradiation—electrolysis is studied. Results demonstrate that although photolysis is completely inefficient in the degradation of this pesticide, light irradiation improves significantly the results obtained by single electrolysis, leading to harsher oxidation conditions, which contribute to reduce the number of intermediates and promote mineralization. Electrolysis with diamond electrodes can attain the complete depletion of the pesticide and its mineralization regardless the current density applied and the light irradiation. In comparing the effect of current density, it was found that the process is much efficient operating at 10 mA cm−2, attaining complete mineralization with specific current charges below 10 Ah dm−3, in spite of being detected a lower concentration of oxidants. Under absence of chlorides in the supporting electrolyte main intermediates formed were hydroquinone and 4-chlororesorcinol. Under the presence of this anion, 2-chlorophenol and 4-chlorophenol were also observed at high concentrations. UV irradiation does not modify the intermediates formed although concentration is lower. An oxidation mechanism is proposed in agreement with other works shown in the literature es_ES
dc.format application/pdf es_ES
dc.language.iso en es_ES
dc.publisher Elsevier es_ES
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Conductive diamond es_ES
dc.subject Ultraviolet light irradiation es_ES
dc.subject Electrolysis es_ES
dc.subject Pesticide es_ES
dc.subject 2,4-D es_ES
dc.title Removal of pesticide 2,4-D by conductive-diamond photoelectrochemical oxidation es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.relation.projectID CTM2013-45612-R / FEDER 2007-2013 PP201010 es_ES
dc.identifier.DOI doi:10.1016/j.apcatb.2015.07.038

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