Removal of Dyes from Textile Industry Effluent: A Review

Effluent from the textile industry contains toxic compounds. These compounds contaminate the surface water, thereby making it unfit for irrigation and drinking. Since farmers use water from the rivers for agricultural purposes and the residents of the town, use both the surface and underground water from the same area as potable water, it is quite unsafe to discharge this effluent into water body. Suspended solids can clog fish gills, either kill them or reduce their growth rate. They also reduce the ability of algae to produce food and oxygen. Therefore, proper treatment of effluent water and enforcement of pollution control by the regulatory authority on the indiscriminate discharge of textile wastewater into water bodies should be done. Batch adsorption experiments using Ashoka leaf powder, a low cost, locally available biomaterial as an adsorbent has been used for removal of cationic dyes such as Methylene blue, Malachite Green, Rhodamine B and Brilliant Green from effluent of textile industry.