N-doped TiO2 for the Photocatalytic Treatment of Tannery Wastewater under Visible Light

The aim of this work is the comparison of the efficiency of photodegradation of tannery wastewater on N-TiO₂ under different visible light sources.  The obtained results clearly evidence that N-doped photocatalyst synthesized by hydrolysis of titanium tetraisopropoxide with ammonia aqueous solution is effective to treat real wastewater under visible light irradiation