Sustainable dyeing of denim using indigo dye recovered with polyvinylidene difluoride ultrafiltration membranes

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To access the full text documents, please follow this link: http://hdl.handle.net/2117/26381

dc.contributor	Universitat Politècnica de Catalunya. Institut d'Investigació Tèxtil i Cooperació Industrial de Terrassa
dc.contributor	Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera
dc.contributor	Universitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient
dc.contributor.author	Buscio Olivera, Valentina
dc.contributor.author	Crespi Rosell, Martin
dc.contributor.author	Gutiérrez Bouzán, María Carmen
dc.date	2015-03-15
dc.identifier.citation	Buscio, V.; Crespi, M.; Gutierrez, M. Sustainable dyeing of denim using indigo dye recovered with polyvinylidene difluoride ultrafiltration membranes. "Journal of cleaner production", 15 Març 2015, vol. 91, p. 201-207.
dc.identifier.citation	0959-6526
dc.identifier.citation	10.1016/j.jclepro.2014.12.016
dc.identifier.uri	http://hdl.handle.net/2117/26381
dc.language.iso	eng
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Enginyeria tèxtil ::Impacte ambiental
dc.subject	Àrees temàtiques de la UPC::Enginyeria tèxtil ::Fabricació tèxtil::Tintura
dc.subject	Dyes and dyeing--Textile fibers
dc.subject	Dyes and dyeing--Textile fibers--Environmental aspects
dc.subject	Indigo
dc.subject	Membrane technology
dc.subject	Ultrafiltration
dc.subject	Dye recovery
dc.subject	Indigo
dc.subject	Reuse
dc.subject	Membrane technology
dc.subject	Ultrafiltration
dc.subject	Tints i tenyit -- Aspectes ambientals
dc.subject	Tints i tenyit -- Fibres tèxtils
dc.subject	Membranes (Tecnologia)
dc.subject	Ultrafiltració
dc.title	Sustainable dyeing of denim using indigo dye recovered with polyvinylidene difluoride ultrafiltration membranes
dc.type	info:eu-repo/semantics/submittedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	Indigo is one of the most consumed dyes in the textile sector, as it is widely used for the dyeing of denim clothes. About 15% of indigo used in the dyeing process is discharged to the wastewater treatment plants or sometimes into rivers, in countries where regulations are not strictly applied. In this work, real effluents that contained indigo dye were treated by means of 4 different ultrafiltration membranes. The feasibility to recover the concentrated dye with lab and semi-industrial pilots was also investigated. The studied membranes achieved up to 99% colour removal and 80% chemical oxygen demand (COD) decrease. Finally, the concentrates containing 20 g L_1 of indigo dye were reused in new dyeing processes. Colour differences (DECMC) and rubbing and washing fastnesses were evaluated. Fabrics dyed with the recovered indigo concentrates exhibited similar characteristics than the ones obtained with the commercial dye

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