Carbon adsorption

It works as an adsorbant in its "virgin" state and as a chemisorbant in its impregnated forms. This is achieved by virtue of its vast internal surface area, where almost every atom of carbon or impregnant is exposed to the air stream in some manner. Each kilogram of carbon has 1,000,000 m2 of surface area or the equivalent of 247 football pitches. In the carbon matrix there are a myriad of partially bonded carbon atoms which, as a result carry an electrical charge. The resulting electrostatic charge attracts contaminant molecules and adheres them to the carbon surface. Where the carbon is impregnated with a reagent, the reagent is often catalysed by the electrical charge distribution and hence reactions are rapid and complete.

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