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Electrochemical removal of dimethyl phthalate with diamond anodes

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dc.contributor.author Souza, F.L.
dc.contributor.author Saez, C.
dc.contributor.author Cañizares Cañizares, Pablo
dc.contributor.author Motheo, Artur de
dc.contributor.author Rodrigo Rodrigo, Manuel Andrés
dc.date.accessioned 2016-05-10T09:54:40Z
dc.date.available 2016-05-10T09:54:40Z
dc.date.issued 2014-02
dc.identifier.citation Journal of Chemical Technology and Biotechnology. Volume 89, Issue 2, pages 282–289, February 2014 es_ES
dc.identifier.issn 1097-4660
dc.identifier.uri http://hdl.handle.net/10578/9243
dc.description.abstract BACKGROUND In this work, the electrolysis of dimethyl phthalate (DMP, a widely-use plasticizer) with conductive-diamond anodes is studied. RESULTS Results show that this technology is capable of depleting this pollutant in a wide range of initial concentrations. Although mass transfer limits the kinetics of the process, there is a significant contribution of mediated oxidation and the rate of the processes improve with increasing current density, while the efficiency decreases. A first stage in the oxidation of DMP consists of the attack on the methyl ester groups, and monomethyl phthalate and phthalate are the main aromatic intermediates. Further oxidation of these species results in the formation of maleic and oxalic acid, which behave as intermediates and are completely mineralized during the electrolysis. The presence of chloride in water leads to the formation of many more aromatic chlorinated intermediates from the action of hypochlorite on aromatics intermediates. Intermediates found and oxidation mechanisms proposed are consistent with those reported in the literature for other advanced oxidation processes. CONCLUSIONS DMP, TOC (total organic carbon) and COD (chemical oxygen demand) can be successfully removed using electrolysis with conductive-diamond anodes. DMP removal is faster than that of COD and TOC indicating the formation of reaction intermediates es_ES
dc.format application/pdf es_ES
dc.language.iso en es_ES
dc.publisher Wileu es_ES
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject electrolysis es_ES
dc.subject conductive-diamond es_ES
dc.subject phthalate es_ES
dc.subject wastewater treatment es_ES
dc.title Electrochemical removal of dimethyl phthalate with diamond anodes es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.relation.projectID CTM2010-18833 es_ES
dc.identifier.DOI 10.1002/jctb.4118

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