Photo-Fenton oxidation of phenol and organochlorides (2,4-DCP and 2,4-D) in aqueous alkaline medium with high chloride concentration

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dc.contributor.authorLuna, Airton J.
dc.contributor.authorChiavone-Filho, Osvaldo
dc.contributor.authorMachulek, Amilcar
dc.contributor.authorMoraes, Jose Ermirio F. de [UNIFESP]
dc.contributor.authorNascimento, Claudio A. O.
dc.contributor.institutionNatl Inst Ind Property
dc.contributor.institutionUniv Fed Rio Grande do Norte
dc.contributor.institutionUniversidade Federal de Mato Grosso do Sul (UFMS)
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2016-01-24T14:28:02Z
dc.date.available2016-01-24T14:28:02Z
dc.date.issued2012-11-30
dc.description.abstractA highly concentrated aqueous saline-containing solution of phenol, 2,4-dichlorophenoxyacetic acid (2,4-D) and 2,4-dichlorophenol (2.4-DCP) was treated by the photo-Fenton process in a system composed of an annular reactor with a quartz immersion well and a medium-pressure mercury lamp (450 W). the study was conducted under special conditions to minimize the costs of acidification and neutralization, which are usual steps in this type of process. Photochemical reactions were carried out to investigate the influence of some process variables such as the initial concentration of Fe2+ ([Fe2+](0)) from 1.0 up to 2.5 mM, the rate in mmol of H2O2 fed into the system (F-H2O2,F-in) from 3.67 up to 7.33 mmol of H2O2/min during 120 min of reaction time, and the initial pH (pH(0)) from 3.0 up to 9.0 in the presence and absence of NaCl (60.0 g/L). Although the optimum pH for the photo-Fenton process is about 3.0, this particular system performed well in experimental conditions starting at alkaline and neutral pH. the results obtained here are promising for industrial applications, particularly in view of the high concentration of chloride, a known hydroxyl radical scavenger and the main oxidant present in photo-Fenton processes. (C) 2012 Elsevier B.V. All rights reserved.en
dc.description.affiliationNatl Inst Ind Property, BR-20090910 Rio de Janeiro, Brazil
dc.description.affiliationUniv Fed Rio Grande do Norte, Dept Chem Engn, BR-59066800 Natal, RN, Brazil
dc.description.affiliationUniv Fed Mato Grosso do Sul, Dept Chem, BR-79074460 Campo Grande, MS, Brazil
dc.description.affiliationUniversidade Federal de São Paulo, Dept Exact & Earth Sci, BR-09972270 Diadema, SP, Brazil
dc.description.affiliationUniv São Paulo, Dept Chem Engn, BR-05508900 São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Dept Exact & Earth Sci, BR-09972270 Diadema, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipANP
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipFUNDECT
dc.format.extent10-17
dc.identifierhttp://dx.doi.org/10.1016/j.jenvman.2012.06.014
dc.identifier.citationJournal of Environmental Management. London: Academic Press Ltd- Elsevier B.V., v. 111, p. 10-17, 2012.
dc.identifier.doi10.1016/j.jenvman.2012.06.014
dc.identifier.issn0301-4797
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/35514
dc.identifier.wosWOS:000311005200002
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Environmental Management
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.rights.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.subjectPhoto-Fentonen
dc.subjectPesticidesen
dc.subjectSodium chlorideen
dc.titlePhoto-Fenton oxidation of phenol and organochlorides (2,4-DCP and 2,4-D) in aqueous alkaline medium with high chloride concentrationen
dc.typeinfo:eu-repo/semantics/article
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