About 10,000 tons of different reactive dyes are produced every year all over the world. A huge amount of these dyes is discharged out into water bodies as textile effluents causing environmental hazards. It is necessary to eliminate such persistent contaminants from environment. In present project, solution of reactive azo dye was irradiated which resulted in the free radical degradation known as radiolysis. For the treatment of dye solution, variable parameters such as pH, concentration of H2O2, concentration of TiO2, time of UV irradiation was optimized for the achievement of higher degradation rate of dyes. The response surface methodology (RSM)) was applied for theoretical optimization and collected data interpretation. UV/Visible and FT-IR (Fourier Transform Infrared) spectroscopic techniques were employed for the analysis of extent of dye degradation. The optimized conditions can be employed for the treatment of textile industry wastewater on pilot scale. This heterogeneous photo catalytic method has been found an economical and efficient way for the advanced oxidation treatment of textile industry waste water. The treated water can be reused for industrial and agricultural purposes.

Ijaz Ahmad Bhatti, Misbah and Saira Irshad