Comparative Study of Degradation of Azo Dyes by Photo-Fenton Process

In a laboratory study, degradation of two azo dyes (Amaranth and Evans blue) by photo-Fenton (Fe2+/H2O2) process under visible light irradiation has been examined. The dyes have been chosen as model pollutant and the effects of various parameters such as effect of pH, concentration of ferrous ion, concentration of amaranth and evans blue dye, concentration of hydrogen peroxide and effect of light intensity on degradation of dyes were investigated. The degradation of dye depends on its structure. It was observed that evans blue degraded faster than amaranth. KeywordsAdvanced oxidation process, Azo dyes, PhotoFenton process, Dye degradation.