TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred method: The method comprises: using an organic composite material of a carbon- and/or carboxyl-containing and an alkaline metal-containing material, in dry form or with a liquid; the production taking place in an atmosphere, where CO2-containing gas is fed and/or exists and/or is produced in a plasma chamber; the option of carrying out cooling using cryogenic cooling or by recycling heat energy, where charcoal powder (nano coal) C is recycled from the cooled zone, and atomic O is reacted to O2 or water; adding a carboxyl compound, preferably carboxyl acid, acetate or organic material with a high carboxyl content, to the material; adding to the material, carboxyl and alkaline metal in the form of alkaline metal formate; and adding to the material, carboxyl and alkaline metal in the form of water dissolved or un-dissolved alkaline-based hydrocolloid, preferably sodium, potassium, Cs alginate, pectin, carrageenan and/or carboxyl methyl cellulose. The atmosphere and/or the surroundings of the plasma zone is cooled to temperatures below the threshold value for re-binding between atomic C and O, preferably below 180 degrees C, but higher temperatures may also be used, where a stream of C and O is extracted from the plasma zone. The composite material is produced only by mixing the components, or by the composite material or partial components is suspended in a water mixture, where hydrocolloid is added, alkaline metal is added to gel the carbon material, the flocculate is dehydrated, and/or formed and/or dried into powder, granulate, flakes or solid form. Preferred Components: The main component of the material consists of carbon, preferably recycled carbon from the process, charcoal, fossil coal, peat, peat moss, cellulose or wood chippings. The composite material contains fed water (0-95%), where the preferred moisture of the material is less than 40%, the concentration of alkaline metals is sufficiently high to start and maintain plasma formation with low microwave feed and low temperature. In composite material, a mixture of one or more alkaline metals is main group I or II of the periodic table and a carbon-containing material. EXAMPLE - No suitable example given.