Effect Of Fe2+ On The Degradation Of The Pesticide Profenofos By Electrogenerated H2o2

dc.creatorRocha
dc.creatorRobson S.; Silva
dc.creatorFernando L.; Valim
dc.creatorRicardo B.; Barros
dc.creatorWillyam R. P.; Steter
dc.creatorJuliana R.; Bertazzoli
dc.creatorRodnei; Lanza
dc.creatorMarcos R. V.
dc.date2016
dc.datedez
dc.date2017-11-13T13:23:04Z
dc.date2017-11-13T13:23:04Z
dc.date.accessioned2018-03-29T05:55:46Z
dc.date.available2018-03-29T05:55:46Z
dc.identifierJournal Of Electroanalytical Chemistry. Elsevier Science Sa, v. 783, p. 100 - 105, 2016.
dc.identifier1572-6657
dc.identifier1873-2569
dc.identifierWOS:000390627500014
dc.identifier10.1016/j.jelechem.2016.11.038
dc.identifierhttp://www.chemeurope.com/en/publications/1025340/effect-of-fe2-on-the-degradation-of-the-pesticide-profenofos-by-electrogenerated-h2o2.html
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/328026
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1365051
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionThe purpose of the study was to evaluate the degradation of the organophosphate pesticide profenofos in acidic medium using a gas diffusion electrode (GDE) modified with 5.0% cobalt phthalocyanine (CoPc). The degradation of profenofos was based On oxidation by H2O2 electrogenerated in situ, and experiments were performed in the absence or presence of Fe(II) catalyst. Removal of the pesticide by anodic oxidation was minimal (similar to 20%), and reached only 36% when H2O2 was electrogenerated in the absence of catalyst. However, in the presence of 0.15 mmol L-1 FeSO4 center dot 7H(2)O (electro-Fenton reaction), profenofos removal attained 91% after 60 min of process tithe while total organic carbon (TOC) was reduced by 37%. Prolonged electrolysis. under similar electro-Fenton conditions showed that 100% profenofos removal could be achieved after 2 h and a 89.9% reduction in TOC could be attained after 4 h. Analysis by gas chromatography-mass spectrometry of the by-products formed during the process revealed the progressive degradation of profenofos to o- and p-benzoquinone, with subsequent rupture of the aromatic ring to form oxalic acid and, ultimately, CO2 and H2O. It is concluded that wastewater treatments involving H2O2 electrogeneration in a CoPc-modified GDE were effective in removing profenofos and TOC from commercial formulations of profenofos. (C) 2016 Elsevier B.V. All rights reserved.
dc.description783
dc.description100
dc.description105
dc.descriptionFundacao de Amparo a Pesquisa do Estado de sao Paulo (FAPESP) [2007/08314-3, 2009/15357-6, 2013/02762-5]
dc.descriptionCoordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [446436/2014-3]
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageEnglish
dc.publisherElsevier Science SA
dc.publisherLausanne
dc.relationJournal of Electroanalytical Chemistry
dc.rightsfechado
dc.sourceWOS
dc.subjectProfenofos
dc.subjectElectro-fenton Process
dc.subjectHydrogen Peroxide
dc.subjectGas Diffusion Electrode
dc.subjectOxidative Degradation
dc.titleEffect Of Fe2+ On The Degradation Of The Pesticide Profenofos By Electrogenerated H2o2
dc.typeArtículos de revistas


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