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Applicability of Electrochemical Oxidation using Diamond anodes to the Treatment of a Sulfonylurea Herbicide

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dc.contributor.author Pablo Cañizares
dc.contributor.author C.Saez
dc.contributor.author Marcos Roberto de Vasconcelos Lanza
dc.contributor.author Fabio Luiz de Souza
dc.contributor.author Quijorna, S.
dc.date.accessioned 2018-05-24T10:28:09Z
dc.date.available 2018-05-24T10:28:09Z
dc.date.issued 2017-02-01
dc.identifier.citation Souza, F., Quijorna, S., Lanza, M. R. V., Sáez, C., Cañizares, P., & Rodrigo, M. A. (2017). Applicability of electrochemical oxidation using diamond anodes to the treatment of a sulfonylurea herbicide. Catalysis Today, 280, 192-198. es_ES
dc.identifier.issn 0920-5861
dc.identifier.uri http://hdl.handle.net/10578/17673
dc.description.abstract In this work, the electrolysis of chlorsulfuron (ClSF, a sulfonylurea herbicide) with conductive-diamond anodes is studied. The influences of the nature of the supporting electrolyte (0.05 mol dm−3 NaCl and Na2SO4), the applied current density (30 and 100 mA cm−2) and the initial herbicide concentration (20,50 ad 100 mg dm−3) have been evaluated. Total mineralization of the herbicide was attained regardless of the supporting electrolyte medium used, although electrolyte clearly influenced on the efficiency and rate of the oxidation process. Likewise, the process was found to be more efficient at low current densities. Results point out the importance of mediated electrochemical processes in the removal of ClSF. This influence was confirmed by additional tests in which the electrolysis was combined with UV light or ultrasound irradiation: the use of UV irradiation results in a less efficient process, while US improves importantly the rate of the mineralization as compared to the single electrolytic process. The strong oxidation conditions of electrolysis leads to the formation of reaction intermediates (2-amino-4-methoxy-6-methyl-1,3,5-Triazine, 2-chlorobenzenesulfonamida and oxalic acid) in agreement with the mechanisms proposed in the literature for other AOPs. 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/openAccess es_ES
dc.subject Chlorsulfuron es_ES
dc.subject Wastewater treatment es_ES
dc.subject Electrochemical oxidation es_ES
dc.subject Diamond anodes es_ES
dc.subject Pesticide es_ES
dc.title Applicability of Electrochemical Oxidation using Diamond anodes to the Treatment of a Sulfonylurea Herbicide es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.identifier.DOI dx.doi.org/10.1016/j.cattod.2016.04.030

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