Encyclopedia

Activated carbon


a. Activated carbon. It is usually produced by treating plant, mineral or other forms of carbon (charcoal, carbon from coconut husks, peat, lignite, coal, anthracite, etc.) at high temperatures in an atmosphere of water vapor, carbon dioxide or other gases (gas activation) or by calcining cellulose materials impregnated with solutions of certain chemicals in a dry atmosphere (chemical activation).

Activated carbon is used as a finely ground powder for decolorizing liquids in many industries (sugar or glucose production, oil or wine production, pharmaceuticals, etc.). In the form of granules, it is used for adsorbing vapors (for example, for regenerating volatile solvents in dry cleaning, for removing benzene from coal gas), for water or air purification, as a protective means against toxic gases, in catalysis or for removing accumulated gas in the layer near the electrode during electrolysis (depolarization)

Source: "Explanatory Notes to the Harmonized System of Goods Nomenclature for Foreign Economic Activity of the Russian Federation (HSN of Russia)" (prepared by the Federal Customs Service of Russia) (volume 2, sections VI - XI, groups 30 - 63)

Laws with commentary

Codes and federal laws