Powder activated carbon produced by steam activation of wood. Wood Powder Activated carbon powder has an extraordinarily large internal surface area and pore volume that are responsible for its adsorptive properties. Powdered varieties of Activated Carbon are used in liquid phase application primarily for removal of undesired colour, smell and other impurities in many types of industries including basic drugs, glucose, sugar, and so on. Quite often, powdered carbon is washed with acid and then, repeatedly with water & dried to minimize impurities like soluble ash-iron, heavy metals etc.