1Research Scholar, Centre for Environmental Studies, Anna University, Chennai-600025
2Professor of Environmental Engineering, Centre for Environmental Studies, Anna University, Chennai-600 025
*Email: ganesh74r@yahoo.com
Online published on 11 December, 2012.
In a laboratory study, decolourisation of real textile dyeing wastewater by modified solar photo-Fenton (Steel scrap/H2O2) process under irradiation with sunlight was examined. Batch experiments were conducted to determine optimal operating conditions.The optimal doses of H2O2 and steel scrap were 15 mL/L and 1 giL, respectively at pH 3.Colour removal of 89% was obtained under optimum conditions. These results suggest that, the modified solar photo-Fenton process proved to be efficient for decolourisation of the real textile dyeing wastewater. A simplified mechanism of hydroxyl radical production in the presence of steel scrap as a catalyst has been proposed. The morphologic analysis and mapping of the elementary composition of Steel scrap used as a catalyst was determined by scanning electronic microscopy.
Textile dyeing wastewater, Steel scrap, Decolourisation, Solar light, Hydrogen peroxide, Modified solar photo-Fenton process
