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Reuse of textile effluents treated with nanofiltration membranes
Vilaseca Vallvé, M. Mercedes; Buscio Olivera, Valentina; García Jiménez, María Gracia; Crespi Rosell, Martin; Gutiérrez Bouzán, María Carmen
Universitat Politècnica de Catalunya. Institut d'Investigació Tèxtil i Cooperació Industrial de Terrassa; Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera; Universitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient
The reactive dye Cibacron Yellow S-3R was selected for the membrane filtration study, to evaluate the feasibility of nanofiltration membranes to treat textile wastewater. Synthetic effluents were treated by means of two nanofiltration membranes, Hydracore10 and Hydracore50, manufactured by Hydranautics. The membranes provided a high quality permeate, able to be reused in new dyeings. Up to 98% of dye removal was achieved. The influence of salt concentration and pH on membrane treatment was studied. The best conditions for dye removal were pH 3 and 60g·L-1 of NaCl. After the membrane filtration, the treated permeates were reused in new dyeing process. 100% of the obtained permeate was reused to perform different dyeings with four reactive dyes. Finally fabrics dyed with the reused water were evaluated respect to references carried out with softened tap water. The colour differences obtained were lower than 0.5, being 1 the maximum value generally accepted by the industry
Àrees temàtiques de la UPC::Enginyeria tèxtil ::Impacte ambiental
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Degradació ambiental::Contaminació de l’aigua
Àrees temàtiques de la UPC::Enginyeria química::Indústries químiques::Química tèxtil
Textile industry--Water-supply
Water--Purification--Color removal
Reactive dyes
Nanofiltration
Nanofiltration
membrane treatment
textile wastewater
reactive dyes
permeate reuse
colour removal
Aigua -- Depuració -- Indústria tèxtil
Nanofiltració
Colorants -- Química
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