Photochemical transformation of antibiotics by excitation of Fe(III)-complexes in aqueous medium
dc.contributor.author | Batista, Ana Paula S. [UNESP] | |
dc.contributor.author | Cottrell, Barbara A. | |
dc.contributor.author | Pupo Nogueira, Raquel F. [UNESP] | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.contributor.institution | Univ Calif Irvine | |
dc.date.accessioned | 2014-12-03T13:08:39Z | |
dc.date.available | 2014-12-03T13:08:39Z | |
dc.date.issued | 2014-01-30 | |
dc.description.abstract | The 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.affiliation | UNESP Univ Estadual Paulista, Inst Quim Araraquara, BR-14801970 Araraquara, SP, Brazil | |
dc.description.affiliation | Univ Calif Irvine, Urban Water Res Ctr, Dept Civil & Environm Engn, Irvine, CA 92697 USA | |
dc.description.affiliationUnesp | UNESP Univ Estadual Paulista, Inst Quim Araraquara, BR-14801970 Araraquara, SP, Brazil | |
dc.description.sponsorship | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) | |
dc.format.extent | 50-56 | |
dc.identifier | http://dx.doi.org/10.1016/j.jphotochem.2013.09.017 | |
dc.identifier.citation | Journal Of Photochemistry And Photobiology A-chemistry. Lausanne: Elsevier Science Sa, v. 274, p. 50-56, 2014. | |
dc.identifier.doi | 10.1016/j.jphotochem.2013.09.017 | |
dc.identifier.issn | 1010-6030 | |
dc.identifier.uri | http://hdl.handle.net/11449/111436 | |
dc.identifier.wos | WOS:000327754900008 | |
dc.language.iso | eng | |
dc.publisher | Elsevier B.V. | |
dc.relation.ispartof | Journal of Photochemistry and Photobiology A: Chemistry | |
dc.relation.ispartofjcr | 2.891 | |
dc.relation.ispartofsjr | 0,689 | |
dc.rights.accessRights | Acesso restrito | |
dc.source | Web of Science | |
dc.subject | Sulfonamides | en |
dc.subject | Iron complexation | en |
dc.subject | Photolysis process | en |
dc.subject | Blacklight irradiation | en |
dc.subject | Sunlight irradiation | en |
dc.title | Photochemical transformation of antibiotics by excitation of Fe(III)-complexes in aqueous medium | en |
dc.type | Artigo | |
dcterms.license | http://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy | |
dcterms.rightsHolder | Elsevier B.V. | |
unesp.campus | Universidade Estadual Paulista (Unesp), Instituto de Química, Araraquara | pt |