Activated carbon

A porous carbon with a large surface area that can adsorb certain organic chemicals.

It is a type of carbon managed to have low, small-volume pores that can grow the surface area available for adsorption and chemical reactions. ‘Active’ can be another term used to describe this process.
Physical absorption is the way activated carbon works to remove contaminants from liquid or vapour streams. The large surface area of carbon has forces which manifest, which means water contaminants are absorbed to the surface of carbon. The dissolved adsorbate goes from the solution through to the pore channels to reach the strongest attractive forces.
Activated carbon is used primarily to purify liquids and gases. It includes municipal drinking water, odour removal, industrial pollution control and food and beverage processing. Produced from carbonaceous source materials, activated carbon can come from things like nutshells, coconuts and wood.