A Review on Advanced Oxidation Processes for the Treatment of Textile Effluent

Dyes are those synthetic and natural compounds which applied in form of aqueous based solutions with many additives to strong attachment of dye molecule with a fabric for persistence the colour on it while pigments are usually insoluble. There are various methods of dye all over the world for dye fabrications. Dyes fabrication processes require thousands liters of water for coloring materials which need very small amount of it and remaining water discharged as a dye waste water and become hazardous to ecology. As an effluent from textile and printing industries having remaining dyes and several additives it become one of the central sources with severe pollution complications worldwide and hard to treat by conventional Chemical/Biological processes. This complex nature of dye wastewater can be converted into less harmless/useful by products along with conventional biological treatment, chemical treatment or set of chemical treatments like Advanced Oxidation processes are used. This paper reviews various Advanced Oxidation processes (AOPs) like Hydrogen peroxide, ozonation, ultra violet radiations, alone or in combinations for the treatment of textile effluent and their efficiency regarding detoxification and color removal. The current review describes the efficiency of various advanced oxidation processes in which hydroxyl radical was generated for color removal dye bath.