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dc.contributor.authorLópez Grimau, Víctor
dc.contributor.authorGutiérrez Bouzán, María Carmen
dc.contributor.authorValldeperas Morell, José
dc.contributor.authorCrespi Rosell, Martin
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Projectes d'Enginyeria
dc.contributor.otherUniversitat Politècnica de Catalunya. Institut d'Investigació Tèxtil i Cooperació Industrial de Terrassa
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera
dc.identifier.citationLopez, V. [et al.]. Continuous reuse of water and electrolyte from decolorized reactive dyebaths. "Desalination and water treatment", 04 Març 2013.
dc.description.abstractIn this work, the feasibility of reusing water and salt from reactive dyebaths after electrochemical decolourization was evaluated. Dyeing series of ten reuses with three reactive dyes (Navy Blue Procion H-EXL, Crimson Procion H-EXL and Yellow Procion H-EXL) were carried out (individually and in a trichromie) and color differences and total organic carbon values were measured to study how the successive reuses affect the quality dyeing. The first reuse produced dyeings with low colour differences with respect to a standard dyeing. In the subsequent reuses, colour differences increased until they reached a constant value at the 4th or 5th reuse, following a similar behavior to the organic matter content. At this point, it is determined the percentage of dye increase that allows for continuous dyeing of acceptable quality for the textile industry. To obtain dyeings with acceptable color differences (DE ⁄ CMC (2:1) 6 1) independent of the number of consecutive reuses, a 30% increase in blue dyestuff and 10% for red dyestuff must be added, whereas in the case of yellow dyeing, it was not necessary to increase the dye amount after subsequent reuses. In each dyeing, this process allowed savings of 70% of water and an average of 60% for salt.
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Indústria dels processos químics
dc.subjectÀrees temàtiques de la UPC::Enginyeria tèxtil ::Fabricació tèxtil::Tintura
dc.subject.lcshElectrochemical analysis
dc.subject.lcshTextile fabrics--Environmental aspects
dc.subject.lcshDyes and dyeing
dc.subject.lcshWater reuse
dc.titleContinuous reuse of water and electrolyte from decolorized reactive dyebaths
dc.subject.lemacTeixits i tèxtils -- Aspectes ambientals
dc.subject.lemacTints i tenyit -- Química
dc.subject.lemacAnàlisi electroquímica
dc.subject.lemacAigua -- Reutilització
dc.contributor.groupUniversitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient
dc.contributor.groupUniversitat Politècnica de Catalunya. POLQUITEX - Materials Polimérics i Química Téxtil
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
upcommons.citation.authorLopez, V.; Gutierrez, M.; Valldeperas, J.; Crespi, M.
upcommons.citation.publicationNameDesalination and water treatment

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