Research Article Open Access

PHOTO-CATALYTIC DEGRADATION OF BIEBRICH SCARLET DYE USING TIO2 NANOPARTICLES

Abstract

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 (λ_max= 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.

 Fatemeh Magham

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