The use of waste SNCR catalysts to produce a nano-TiO photo-catalyst and to degrade wastewater from the dye making industry.

This study recycles titanium dioxide (TiO) that is contained in waste selective non-catalytic reduction (SNCR) catalysts using acid or alkali. The waste SNCR is then filtered, baked, ground and calcined to form a photo-catalytic powder. The nano-TiO photo-catalysts that are obtained using both processes are then tested and compared.