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

被引：41

作者：

Buscio, V. ^{[1
]}

Crespi, M. ^{[1
]}

Gutierrez-Bouzan, C. ^{[1
]}

机构：

[1] Univ Politecn Catalunya BarcelonaTech UPC, Inst Invest Text & Cooperacio Ind Terrassa INTEXT, Terrassa 08222, Spain

来源：

JOURNAL OF CLEANER PRODUCTION | 2015年 / 91卷

关键词：

Dye recovery; Indigo; Reuse; Membrane technology; Ultrafiltration; TEXTILE WASTE-WATER; PHOTO-FENTON; REUSE; NANOFILTRATION; TECHNOLOGIES; FILTRATION; REDUCTION; EFFLUENT; WASTEWATERS; PERFORMANCE;

D O I：

10.1016/j.jclepro.2014.12.016

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：201 / 207

页数：7

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