Distinct approaches of removal of dyes from wastewater: A review

Concerns about the concentration of organic dyes in wastewater have been raised by environmentalists for quite some time. Many industries, including fabric, food, makeup, and paper industry, are significant sources of organic dye disposal in wastewater. This is creating a significant problem for many organisms which are living in water. Various methods reported till date for organic dyes removal from water are divided into chemical, physical, and biological methods. As different dyes are used in different industries, distinct methods are used for their effective removal. Different physical methods for removing dyes include adsorption, coagulation/flocculation, and filtering. Electro-Fenton, Photocatalysis, and Ozonation are examples of chemical techniques. The biological methods include the use of enzymes and microbes, as well as biosorption and biodegradation.