Elsayed Talat Helmy - Environment Division, National Institute of Oceanography and Fisheries, Kayet Bey, Elanfoushy,Alexandria, Egypt
Ahmed El Nemr - Environment Division, National Institute of Oceanography and Fisheries, Kayet Bey, Elanfoushy,Alexandria, Egypt
Mahmoud mousa - Chemistry Department, Faculty of Science, Benha University, Cairo, Egypt
esam arafa - Chemistry Department, Faculty of Science, Mansoura University, ۳۵۵۱۶-Mansoura, Egypt

This paper describes the photocatalytic degradation of Reactive Blue 19 (RB-19) and Reactive Red 76 (RR-76) dyes pollutant in the industrial wastewater using TiO2, C-doped TiO2 (C-TiO2), S-doped TiO2 (S-TiO2) and C,S co-doped TiO2 (C,S-TiO2) nanoparticles as photocatalysts, which were synthesized via sol-gel process. The prepared photocatalysts were characterized by scanning electron microscopy (SEM), X-Ray diffraction (XRD), Fourier transformer infra-red spectroscopy (FTIR), Energy dispersivespectroscopy (EDAX) and ultraviolet-visible absorption spectroscopy (UV-Vis). The dyes degradation was investigated under several experimental parameters such as pH, catalyst load, dye concentration, shaking speed, irradiation time and catalyst recovery. The photocatalytic dose was found to be 1.6 g/L and the efficiency of RB-19 and RR-76 photocatalytic degradation attained 100 % after 1 h irradiation time under visible light. The chemical oxygen demand (COD) values were determined for wastewaterand treated wastewater. Toxicity and biological activity of the treated and untreated wastewater on marine aquatic organisms rotifer, artemia and Vibrio parahaemolyticus were investigated

Non-Metal Doped Tio2 Nps; Photocatalytic Degradation; Reactive Blue 19 Dye; Reactive Red 76 Dye;Sol-Gel Process