Granular activated carbons are mostly made from Coconut Shells on petroleum coke, bituminous coal or lignite. Granular activated carbon is used in continuous process in areas like water treatment(drinking & effluent water), removal of mercury from effluents or alkali cells, solvent recovery, gold recovery, removal of odour, gas masks, as catalyst carrier, for decholorination of water, purification & separation of gases, kitchen hoods, dry cleaning etc.