Photoelectrocatalysis based on Ti/TiO2 nanotubes removes toxic properties of the azo dyes Disperse Red 1, Disperse Red 13 and Disperse Orange 1 from aqueous chloride samples

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dc.contributor.authorFerraz, E. R A
dc.contributor.authorOliveira, G. A R
dc.contributor.authorGrando, M. D.
dc.contributor.authorLizier, T. M. [UNESP]
dc.contributor.authorZanoni, Maria Valnice Boldrin [UNESP]
dc.contributor.authorOliveira, D. P.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:29:49Z
dc.date.available2014-05-27T11:29:49Z
dc.date.issued2013-07-01
dc.description.abstractThis work describes the efficiency of photoelectrocatalysis based on Ti/TiO2 nanotubes in the degradation of the azo dyes Disperse Red 1, Disperse Red 13 and Disperse Orange 1 and to remove their toxic properties, as an alternative method for the treatment of effluents and water. For this purpose, the discoloration rate, total organic carbon (TOC) removal, and genotoxic, cytotoxic and mutagenic responses were determined, using the comet, micronucleus and cytotoxicity assays in HepG2 cells and the Salmonella mutagenicity assay. In a previous study it was found that the surfactant Emulsogen could contribute to the low mineralization of the dyes (60% after 4h of treatment), which, in turn, seems to account for the mutagenicity of the products generated. Thus this surfactant was not added to the chloride medium in order to avoid this interference. The photoelectrocatalytic method presented rapid discoloration and the TOC reduction was ≥87% after 240min of treatment, showing that photoelectrocatalysis is able to mineralize the dyes tested. The method was also efficient in removing the mutagenic activity and cytotoxic effects of these three dyes. Thus it was concluded that photoelectrocatalysis was a promising method for the treatment of aqueous samples. © 2013 Elsevier Ltd.en
dc.description.affiliationUSP Departamento de Análises Clínicas, Toxicológicas e Bromatológicas Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de Sao Paulo, Av. do Café, s/n, 14040-903 Ribeirão Preto, SP
dc.description.affiliationUNESP, Universidade Estadual Paulista Júlio de Mesquita Filho Instituto de Química de Araraquara Departamento de Química Analítica, Rua Francisco Degni, s/n, Bairro Quitandinha, 14800-900 Araraquara, SP
dc.description.affiliationUnespUNESP, Universidade Estadual Paulista Júlio de Mesquita Filho Instituto de Química de Araraquara Departamento de Química Analítica, Rua Francisco Degni, s/n, Bairro Quitandinha, 14800-900 Araraquara, SP
dc.format.extent108-114
dc.identifierhttp://dx.doi.org/10.1016/j.jenvman.2013.03.033
dc.identifier.citationJournal of Environmental Management, v. 124, p. 108-114.
dc.identifier.doi10.1016/j.jenvman.2013.03.033
dc.identifier.issn0301-4797
dc.identifier.issn1095-8630
dc.identifier.orcid0000-0002-2296-1393
dc.identifier.scopus2-s2.0-84877084989
dc.identifier.urihttp://hdl.handle.net/11449/75766
dc.identifier.wosWOS:000320219700012
dc.language.isoeng
dc.relation.ispartofJournal of Environmental Management
dc.relation.ispartofjcr4.005
dc.relation.ispartofsjr1,161
dc.relation.ispartofsjr1,161
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectAzo dye
dc.subjectCytotoxicity
dc.subjectMutagenicity
dc.subjectNanotubes
dc.subjectPhotoelectrocatalysis
dc.subjectazo dye
dc.subjectchloride
dc.subjectdisperse orange 1
dc.subjectdisperse red 1
dc.subjectdisperse red 13
dc.subjectnanotube
dc.subjecttitanium dioxide
dc.subjectunclassified drug
dc.subjectaqueous solution
dc.subjectbacterium
dc.subjectbiodegradation
dc.subjectdye
dc.subjectecotoxicology
dc.subjecteffluent
dc.subjectelectrokinesis
dc.subjectmicrobial activity
dc.subjectmutagenicity
dc.subjectpollutant removal
dc.subjecttitanium
dc.subjecttotal organic carbon
dc.subjecttoxicity test
dc.subjectbleaching
dc.subjectcatalysis
dc.subjectcell strain HepG2
dc.subjectcomet assay
dc.subjectcontrolled study
dc.subjectcytotoxicity
dc.subjectelectrochemistry
dc.subjectgenotoxicity
dc.subjecthuman
dc.subjecthuman cell
dc.subjectmicronucleus test
dc.subjectmineralization
dc.subjectphotoelectrocatalysis
dc.subjectSalmonella
dc.subjectwaste component removal
dc.titlePhotoelectrocatalysis based on Ti/TiO2 nanotubes removes toxic properties of the azo dyes Disperse Red 1, Disperse Red 13 and Disperse Orange 1 from aqueous chloride samplesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
unesp.author.orcid0000-0002-2296-1393[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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