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

dc.creatorRocha R.S.
dc.creatorSilva F.L.
dc.creatorValim R.B.
dc.creatorBarros W.R.P.
dc.creatorSteter J.R.
dc.creatorBertazzoli R.
dc.creatorLanza M.R.V.
dc.date2016
dc.date2017-08-17T19:10:15Z
dc.date2017-08-17T19:10:15Z
dc.date.accessioned2018-03-29T05:15:10Z
dc.date.available2018-03-29T05:15:10Z
dc.identifierJournal Of Electroanalytical Chemistry. Elsevier B.v., v. 783, p. 100 - 105, 2016.
dc.identifier1572-6657
dc.identifier10.1016/j.jelechem.2016.11.038
dc.identifierhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85002406594&doi=10.1016%2fj.jelechem.2016.11.038&partnerID=40&md5=89df560476eb09ecdc3cb3d1ba00e989
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/322990
dc.identifier2-s2.0-85002406594
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1357153
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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 (~ 20%), and reached only 36% when H2O2 was electrogenerated in the absence of catalyst. However, in the presence of 0.15 mmol L− 1 FeSO4·7H2O (electro-Fenton reaction), profenofos removal attained 91% after 60 min of process time 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. © 2016 Elsevier B.V.
dc.description783
dc.description100
dc.description105
dc.descriptionCAPES, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description2007/08314-3, FAPESP, Fundação de Amparo à Pesquisa do Estado de São Paulo
dc.description2009/15357-6, FAPESP, Fundação de Amparo à Pesquisa do Estado de São Paulo
dc.description2013/02762-5, FAPESP, Fundação de Amparo à Pesquisa do Estado de São Paulo
dc.description446436/2014-3, CNPq, Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageEnglish
dc.publisherElsevier B.V.
dc.relationJournal of Electroanalytical Chemistry
dc.rightsfechado
dc.sourceScopus
dc.subjectElectro - Fenton Process
dc.subjectGas Diffusion Electrode
dc.subjectHydrogen Peroxide
dc.subjectOxidative Degradation
dc.subjectProfenofos
dc.titleEffect Of Fe2 + On The Degradation Of The Pesticide Profenofos By Electrogenerated H2o2
dc.typeArtículos de revistas


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