An Introduction to Membrane-Based Systems for Dye Removal

Despite significant contributions to the country’s economy and human necessities, the textile industry consumes large quantities of dyes with the discharge of excessive deleterious dye effluents. The wastewater contaminated with dyes if not treated afore discharge poses serious intimidations to the environment and human health. The presence of dyes in untreated wastewater has grown into an emergent apprehension for scientists. Therefore, there is a calamitous prerequisite to discharge wastewater after treatment using different environmentally benign physical, chemical, and biological technologies. The chapter emphasizes the treatment of wastewater dye effluents with membrane-based technologies such as microfiltration, ultrafiltration, nanofiltration, reverse, and forward osmosis. Recent trends in the aforesaid techniques with the benefits and drawbacks have also been reconnoitered in detail. The critical analyses regarding the comparative efficiency of the membrane-based approaches for dye removal from wastewater have been explored systematically. The chapter will widen the industrial applications of membrane-based technology with cost-effectiveness, and performance in the future.