suure süsinikusisaldusega poorne aine, mis tekib puidu kuumutamisel õhu juurdepääsuta v. vähese juurdepääsu korral
a porous solid product containing 85-98 per cent carbon and produced by heating carbonaceous materials such as cellulose, wood or peat at 500-600 degrees Celsius in the absence of air
Charcoal from wood is used as a fuel. All forms of charcoal are porous and are used for adsorbing gases and purifying and clarifying liquids. There are several types depending on the source. Charcoal from coconut shells is a particularly good gas adsorbent. Animal charcoal (or bone black) is made by heating bones and dissolving out the calcium phosphates and other mineral salts with acid. It is used in sugar refining. Activated charcoal is charcoal that has been activated for adsorption by steaming or by heating in a vacuum.
