Adsorption Isotherms

Adsorption Isotherms

A mathematical equation, which describes the relationship between pressure (p) of the gaseous adsorbate and the extent of adsorption at any fixed temperature, is called adsorption isotherms.

The extent of adsorption is expressed as mass of the adsorbate adsorbed on one unit mass of the adsorbent.

Thus, if x g of an adsorbate is adsorbed on m g of the adsorbent, then

Various adsorption isotherms are commonly employed in describing the adsorption data.

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