Catalytic control of NOx emissions using waste derived oxide supported transition metals catalyst

Certain oxide and oxide supported transition metals are used as catalysts for NOx reduction. An economically attractive option for obtaining such catalysts is from wastes. For instance, red mud which is a waste obtained during processing of aluminium ore bauxite is rich in Fe2O3 and is a potential catalyst. Similarly, sludge from certain industries such as electroplating contain transition metals like Cu, Cr, Ni. This study will develop suitable catalysts from these wastes for NOx reduction which are efficient and yet economically attractive.