Abstract: The most dye wastewater is produced in the textile sector (54 percent), representing more than half the global environmental effluent. Textile wastewaters are hazardous effluents comprising toxic complex components that, if not treated properly, have a significant negative influence on the environment, causing harm to aquatic ecosystems as well as human health and necessitating treatment prior to discharge into natural reservoirs. To address this issue, it is necessary to establish a long-term and efficient way of treating dye effluents. Many dye removal technologies such as physical, chemical and biological approaches were used for the treatment. In this review study, we will look at several dye treatment methods, their effectiveness, and new breakthroughs in nanotechnology in dye treatment.

Keywords: Membrane filtration, Adsorption, Textile dye, Ion exchange, Electro coagulation, Fenton, Chitin, Nanoparticles, Carbon nanotubes

| DOI: 10.17148/IARJSET.2021.85105