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Materials 2016, 9(6), 490; doi:10.3390/ma9060490

Reuse of Textile Dyeing Effluents Treated with Coupled Nanofiltration and Electrochemical Processes

1
Institute of Textile Research and Industrial Cooperation of Terrassa (INTEXTER), Universitat Politècnica de Catalunya-BarcelonaTech (UPC), C/Colom 15, Terrassa 08222, Spain
2
Department of Project and Construction Engineering, Universitat Politècnica de Catalunya-Barcelona Tech (UPC), C/Colom 11, Terrassa 08222, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Reza Montazami
Received: 25 May 2016 / Revised: 13 June 2016 / Accepted: 14 June 2016 / Published: 20 June 2016
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Abstract

The reactive dye Cibacron Yellow S-3R was selected to evaluate the feasibility of combining nanofiltration membranes with electrochemical processes to treat textile wastewater. Synthetic dyeing effluents were treated by means of two nanofiltration membranes, Hydracore10 and Hydracore50. Up to 98% of dye removal was achieved. The influence of salt concentration and pH on membrane treatment was studied. The best dye removal yield was achieved at pH 3 in the presence of 60 g/L of NaCl. After the membrane filtration, the concentrate containing high dye concentration was treated by means of an electrochemical process at three different current densities: 33, 83, and 166 mA/cm2. Results showed a lineal relationship between treatment time and applied current density. Both permeates and electrochemically-decoloured effluents were reused in new dyeing processes (100% of permeate and 70% of decoloured concentrates). Dyed fabrics were evaluated with respect to original dyeing. Colour differences were found to be into the acceptance range. View Full-Text
Keywords: dyeing effluent; nanofiltration; electrochemical process; water reuse dyeing effluent; nanofiltration; electrochemical process; water reuse
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Buscio, V.; García-Jiménez, M.; Vilaseca, M.; López-Grimau, V.; Crespi, M.; Gutiérrez-Bouzán, C. Reuse of Textile Dyeing Effluents Treated with Coupled Nanofiltration and Electrochemical Processes. Materials 2016, 9, 490.

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