Comparative Studied of Degradation of Textile Brilliant Reactive Red Dye Using H2O2, TiO2, UV and Sunlight

Abstract

In this study sunlight and UV radiation were used to compare the efficiency of decolorization of textile wastewater containing brilliant reactive red dye K-2BP (?max = 534 nm) by the advanced oxidation process (AOP) using (H₂O₂/sunlight, H₂O₂/UV, H₂O₂/TiO₂/sunlight, and H₂O₂/TiO₂/UV). The results studied the effect of solution pH, applied H₂O₂ concentration, TiO₂ concentration (nanoparticle), and initial dye concentration were studied. The experimental results showed that decolorization percentage with H₂O₂/sunlight and TiO₂/H₂O₂/sunlight under the following conditions: - reaction time 150 of minutes, [ 500 ppm] H₂O₂, [100 ppm] TiO₂, pH=3, initial dye concentration =15 ppm and at ambient temperature were 95.7% and 98.42% respectively. For the same conditions using H₂O₂/UV, H₂O₂/TiO₂ /UV, the percentage of decolorization were 97.85% and 96.33% respectively. The results also indicated that the sunlight is more economic and cost-effective than UV radiation.