Efficient Recovery of V, W, and Regeneration of TiO2 Photocatalysts from Waste-SCR Catalysts

Discarded Waste-SCR (selective catalytic reduction) catalysts not only harm the natural environment, but also hinder recovery of valuable metals such as V, W, and Ti, thus resulting in a waste resources. Therefore, it has become imperative to dispose large amounts. This study aims develop complete, eco-friendly, economical process dealing with catalysts. In this process, V W from was achieved several steps. addition, leaching conditions acid-base were optimized, while structure composition residual studied depth. Sodium titanates generated by alkali then applied for regeneration TiO2 photocatalyst. It is worth noting that Fe-doped photocatalysts prepared, required iron source obtained through acid leaching. Regenerated photocatalyst an excellent performance photocatalytic degradation dye pollutants, which attributable small particle size low forbidden band width. contributes new idea recycling solid waste, treatment wastewater.