PHOTO-CATALYTIC DEGRADATION OF BIEBRICH SCARLET DYE USING TIO2 NANOPARTICLES
Photo-Catalytic Oxidation (PCO) is one of the efficient methods for degradation of the various hazardous organic pollutants in water. The photo-catalytic degradation of diazo dye Biebrich Scarlet (BS) in the wastewaters was studied. The degradation efficiency of the (BS) dye was monitored by UV-Vis spectrophotometer at the visible maximum absorption wavelengths (λmax= 507). The degradation of dyes depends on several parameters such as pH, catalyst concentration, substrate concentration, H2O2 and existing some salts in water. The electron scavenger employed was inorganic oxidant such as H2O2. Photo-catalytic activity of TiO2 was examined by focusing on its enhancement by electron acceptors (S2O7-2 or S2O8-2) in the photo-catalytic decomposition of the (BS) dye. The experimental data were analyzed by the Langmuir and Freundlich adsorption models. Equilibrium data fitted very well with the langmuir model.