Changes in the porous structure of carbonizate of carbon containing raw under alkaline activation

Activated carbons due to its unique properties such as developed surface, adjustable porosity, good conductivity and stability in various environments, are widely used in various fields. Agricultural waste – licorice root millcake and its activation processes using an alkali solution were studied with the purpose of obtaining microporous coal adsorbents. A number of activated carbons were derived. The effect of alkali solution consumption on the porous structure of the materials is discussed. The carbonized obtained at 500°C found to be characterized by the least development of the porous structure: the lowest values of the specific surface area (less than 315 m2/g) and the pore volume. Activation carried out at the mass ratio carbonizate: KOH=1:1 led to an increase in the specific surface area to 447.4 m2/g. The most highly porous coals were characterized by values of 830-850 m2/g.

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