Adsorption

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Adsorption

The removal of low-concentration gases and vapours from an exhaust stream by the adherence of these materials to the surface of a porous solid adsorbent is referred to as adsorption. Adsorbents used in air pollution applications include activated carbon, alumina, bauxite, and silica gel. Activated carbon (most frequently used) is prepared by partially oxidizing lignite, bituminous coal, and petroleum coke.

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