• Manjusha Kulkarni

In the present investigation we have shown the photocatalytic degradation of azo dye using Advance Oxidation Process in presence of different metal oxide nanoparticles &. Au & γ-Fe2O3 modified TiO2Nano composites. We report here the photocatalytic degradation studies on Amaranth (AM) dye as a representative of the class of azo dye using UV+TiO2/ZnO and UV+TiO2/ZnO+H2O2 processes in aqueous suspension under 8W low-pressure mercury vapor lamp irradiation. This azodye is widely used in food industry and released into the eco system by the food industrial effluents. It is found to be carcinogenic, posing serious danger to the aquatic and human life. Environmental Protection Agency (EPA) declared Amaranth dye as a priority pollutant. We focus our study on degradation of Amaranth dye using various AOPs. Here we also report the optimization of various experimental parameters such as effect of catalyst concentration, effect of substrate concentration, effect of addition of H2O2. Obtained results are very encouraging. By addition of H2O2 the rate of photodegradation is dramatically increases. The obtained result shows that the employment of UV+TiO2/ZnO and UV+TiO2/ZnO+H2O2 processes and selection of operational parameters led to a complete degradation and substantial dye mineralization supported by the values of the % reduction in Chemical Oxygen Demand (COD) ~ 86.2 % and Total Organic Carbon (TOC) ~ 55% of the treated dye using DP25 TiO2 & also testified by using γ-Fe2O3 NPs attached TiO2,which shows a remarkable 95% degradation of the azodye in 15 minutes of UV exposure.We extend our study to treat real industrial effluent.

Amaranth dye, TiO2, photocatalysis.

"APPLICATION OF AOP FOR AMARANTH DYE USING SEMICONDUCTOR NANO MATERIALS AND AU AND γ-Fe2O3 MODIFIED TiO2 NANO COMPOSITES.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 1, page no.200-206, January-2019, Available :http://www.jetir.org/papers/JETIR1901624.pdf

"APPLICATION OF AOP FOR AMARANTH DYE USING SEMICONDUCTOR NANO MATERIALS AND AU AND γ-Fe2O3 MODIFIED TiO2 NANO COMPOSITES.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 1, page no. pp200-206, January-2019, Available at : http://www.jetir.org/papers/JETIR1901624.pdf