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Materials (Basel)

Title:		Photo-Electrochemical Treatment of Reactive Dyes in Wastewater and Reuse of the Effluent: Method Optimization
Author(s):		Sala M; Lopez-Grimau V; Gutierrez-Bouzan C;
Address:		"Institut d'Investigacio Textil i Cooperacio Industrial de Terrassa (INTEXTER), Universitat Politecnica de Catalunya-BarcelonaTech (UPC), C/Colom 15, 08222 Terrassa, Spain. mireia@fitex.es. Institut d'Investigacio Textil i Cooperacio Industrial de Terrassa (INTEXTER), Universitat Politecnica de Catalunya-BarcelonaTech (UPC), C/Colom 15, 08222 Terrassa, Spain. victor.lopez-grimau@upc.es. Institut d'Investigacio Textil i Cooperacio Industrial de Terrassa (INTEXTER), Universitat Politecnica de Catalunya-BarcelonaTech (UPC), C/Colom 15, 08222 Terrassa, Spain. gutierrez@intexter.upc.edu"
Journal Title:		Materials (Basel)
Year:		2014
Volume:		20141114
Issue:		11
Page Number:		7349 - 7365
DOI:		10.3390/ma7117349
ISSN/ISBN:		1996-1944 (Print) 1996-1944 (Electronic) 1996-1944 (Linking)
Abstract:		"In this work, the efficiency of a photo-electrochemical method to remove color in textile dyeing effluents is discussed. The decolorization of a synthetic effluent containing a bi-functional reactive dye was carried out by applying an electrochemical treatment at different intensities (2 A, 5 A and 10 A), followed by ultraviolet irradiation. The combination of both treatments was optimized. The final percentage of effluent decolorization, the reduction of halogenated organic volatile compound and the total organic carbon removal were the determinant factors in the selection of the best treatment conditions. The optimized method was applied to the treatment of nine simulated dyeing effluents prepared with different reactive dyes in order to compare the behavior of mono, bi, and tri-reactive dyes. Finally, the nine treated effluents were reused in new dyeing processes and the color differences (DE(CMC (2:1))) with respect to a reference were evaluated. The influence of the effluent organic matter removal on the color differences was also studied. The reuse of the treated effluents provides satisfactory dyeing results, and an important reduction in water consumption and salt discharge is achieved"
Keywords:		UV irradiation bi-functional effluents reuse electrochemical indirect-oxidation mono-functional reactive dyes tri-functional;
Notes:		"PubMed-not-MEDLINESala, Mireia Lopez-Grimau, Victor Gutierrez-Bouzan, Carmen eng Switzerland 2014/11/14 Materials (Basel). 2014 Nov 14; 7(11):7349-7365. doi: 10.3390/ma7117349"