Study of Reactive blue 203 removal by TiO2-P25 adsorption combined with photocatalysis for its degradation

The treatment of wastewater containing textile dyes is a major environmental challenge due to the complexity of the effluents and the diversity of chemical compounds involved. In this study, we explored adsorption and photocatalysis to improve the purification efficiency of these waters. Adsorption on TiO2-P25 proved particularly effective in removing RB203 dye, reaching equilibrium in around 180 minutes, with optimum conditions A 25mL volume containing of 40 mg/L dye, 0.125 g TiO2-P25, pH 3, stirring speed 300 rpm and temperature 25°C. Photocatalysis using TiO2-P25 has shown promising results under solar irradiation, particularly with TiO2-P25 recycling techniques to reduce costs and improve durability. This study proposes effective solutions for the treatment of wastewater containing textile dyes, with specific recommendations for their practical application in industrial facilities, and future prospects include the optimization of treatment conditions and the integration of these processes into wider systems for sustainable environmental management. Keywords: TiO2; RB203; Solar photocatalysis; Photodegradation; Adsorption, Water treatment.