Term generally referring to either adsorption or absorption. Adsorption is the process by which one material attaches itself to the surface of a second material. Some air pollutants settle out and coat the outer surface of a building, for example. Absorption is the process by which one material soaks into a second material. Liquid air pollutants may actually soak into the surface of a building. The term sorption is most commonly used when the exact process involved, adsorption or absorption, is unknown. Various sorption methods are employed to reduce pollutants from contaminated air and water.

See Also

Pollution Control