Activated carbon, in simpler terms, is a solid black substance which looks a lot like powdered charcoal. It has a huge surface area, and is made out of simple natural objects, such as sawdust, seeds, corn cobs etc. Activated carbon made from bamboo is
The Classification of Activated Carbon. I. Classification of raw material. Coal activated carbon. The activated carbon of this type is made from various kinds of coal, petroleum and their processing products. Activated carbon made from coal is usually activated by water vapor or carbon dioxide gas, and the shape of the product is mainly granular.