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dc.contributor.authorSala, Mireia
dc.contributor.authorLópez Grimau, Víctor
dc.contributor.authorGutiérrez Bouzán, María Carmen
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
dc.contributor.otherUniversitat Politècnica de Catalunya. Institut d'Investigació Tèxtil i Cooperació Industrial de Terrassa
dc.identifier.citationSala, M., Lopez, V., Gutierrez-Bouzán, C. Photoassisted electrochemical treatment of azo and phtalocyanine reactive dyes in the presence of surfactants. "Materials", 18 Març 2016, vol. 9, núm. 3.
dc.description.abstractAn electrochemical treatment (EC) was applied at different intensities to degrade the chromophoric groups of dyes C.I. Reactive Black 5 (RB5) and C.I. Reactive Blue 7 (Rb7) until uncolored species were obtained. Decolorization rate constants of the azo dye RB5 were higher than the phtalocyanine Rb7 ones. In addition, the EC treatment was more efficient at higher intensities, but these conditions significantly increased the generation of undesirable by-products such as chloroform. The combination of EC with UV irradiation (UVEC) drastically minimized the generation of chloroform. The photo-assisted electrochemical treatment was also able to achieve decolorization values of 99%. Finally, mixtures of dyes and surfactants were treated by EC and UVEC. In the presence of surfactants, the decolorization kinetic of dyes was slowed due to the competitive reactions of surfactants degradation. Both methods achieved total decolorization and in both cases, the generation of haloforms was negligible.
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Indústries químiques::Colorants, pintures i vernissos
dc.subjectÀrees temàtiques de la UPC::Enginyeria tèxtil::Impacte ambiental
dc.subject.lcshTextile waste
dc.subject.lcshColoring matter
dc.subject.lcshAzo dyes
dc.subject.lcshSurface active agents
dc.subject.otherTextile washing effluents
dc.subject.otherReactive dyes
dc.subject.otherAzo dyes
dc.subject.otherPhtalocyanine dyes
dc.subject.otherElectrochemical treatment
dc.subject.otherPhoto-assisted electrochemical treatment
dc.titlePhotoassisted electrochemical treatment of azo and phtalocyanine reactive dyes in the presence of surfactants
dc.subject.lemacColorants azoics
dc.subject.lemacColorants -- Tractament
dc.subject.lemacElectroquímica -- Aplicacions
dc.subject.lemacAigües residuals -- Contaminació
dc.subject.lemacAgents tensioactius
dc.contributor.groupUniversitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorSala, M.; Lopez, V.; Gutierrez-Bouzán, C.

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