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Photochemical transformation of antibiotics by excitation of Fe(III)-complexes in aqueous medium

dc.contributor.authorBatista, Ana Paula S. [UNESP]
dc.contributor.authorCottrell, Barbara A.
dc.contributor.authorPupo Nogueira, Raquel F. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Calif Irvine
dc.date.accessioned2014-12-03T13:08:39Z
dc.date.available2014-12-03T13:08:39Z
dc.date.issued2014-01-30
dc.description.abstractThe degradation of sulfadiazine (STZ) and sulfathiazole (SDZ) induced by the excitation of ferric ions (Fe3+) was studied in this work. The effect of Fe3+ ion concentration, pH, iron complexation and irradiation source on the loss of these contaminants were evaluated. The increase of Fe3+ concentration from 0.20 to 0.60 mmol L-1 at pH 2.5 improved the generation of Fe2+ ions during irradiation of Fe(III)-aquacomplex achieving a maximum of 457 +/- 0.68 mu mol L-1 after 60min. However, the increase of pH from 2.5 to 4 decreased the concentration of Fe2+ to 169 +/- 0.59 mu mol L-1. The presence of Fe(III)-oxalate had a positive effect on antibiotics' degradation when compared to either Fe(III)-citrate or Fe(III)-aquacomplex complexes. Antibiotic degradation was improved during sunlight irradiation resulting in concentrations of both STZ and SDZ below the detection limit after an UV doses of 43 and 22J cm(-2) UV respectively (80 and 50 min) in the presence of Fe(III)-oxalate. (C) 2013 Elsevier B.V. All rights reserved.en
dc.description.affiliationUNESP Univ Estadual Paulista, Inst Quim Araraquara, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUniv Calif Irvine, Urban Water Res Ctr, Dept Civil & Environm Engn, Irvine, CA 92697 USA
dc.description.affiliationUnespUNESP Univ Estadual Paulista, Inst Quim Araraquara, BR-14801970 Araraquara, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent50-56
dc.identifierhttp://dx.doi.org/10.1016/j.jphotochem.2013.09.017
dc.identifier.citationJournal Of Photochemistry And Photobiology A-chemistry. Lausanne: Elsevier Science Sa, v. 274, p. 50-56, 2014.
dc.identifier.doi10.1016/j.jphotochem.2013.09.017
dc.identifier.issn1010-6030
dc.identifier.urihttp://hdl.handle.net/11449/111436
dc.identifier.wosWOS:000327754900008
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Photochemistry and Photobiology A: Chemistry
dc.relation.ispartofjcr2.891
dc.relation.ispartofsjr0,689
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectSulfonamidesen
dc.subjectIron complexationen
dc.subjectPhotolysis processen
dc.subjectBlacklight irradiationen
dc.subjectSunlight irradiationen
dc.titlePhotochemical transformation of antibiotics by excitation of Fe(III)-complexes in aqueous mediumen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt
unesp.departmentQuímica Analítica - IQARpt

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