Removal Methods of Synthetic Dyes from Industrial Wastewater: A review

Abstract

The textile industry has significant impacts on water through discharging effluents into various receiving bodies involving rivers, ponds and other public sewer. The main contaminants produced by textile industries are from several of their wet- processing such as scouring, bleaching, mercerizing and dyeing. Dyeing process normally uses large amount of water for dyeing, fixing and washing processes. Dyes are using in several industries, like paper-making, textiles, plastic and foods industries. Wastewater contains dye has become one of the most pollution sources. The textile effluent treatment involves mainly physical, chemical and biological methods. Several treatment technologies are using now a days for removal of dye from industrial wastewater including coagulation, adsorption, biological methods, advanced oxidation processes (AOPs), membrane technologyandelectrochemical methods. Removal of dyes from industrial wastewater using various methods has been reviewed in this paper.