Charcoal is a light black residue consisting of carbon, obtained by removing water and other volatile constituents from animal and vegetation sources. This carbon, or charcoal, that is left has been turned into something with amazing properties.
The process of carbonization creates a product with an enormous surface area to mass ratio with the ability to attract and hold (adsorption) a wide range of chemicals and other harmful substances. A gram of bamboo charcoal has up to 600 square meters of surface area!
Most people think of charcoal as a fuel for barbecue grills, but grilling is just one of the many ways that charcoal can be used. Charcoal has been used in the past for making gunpowder, smelting metals, water purification, and treating illnesses of all types.