Transcription of Adsorption Basics: Part 1 - AIChE
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Adsorption Basics: Part 1 - AIChE
48 July 2017 CEPBack to BasicsAdsorption takes advantage of the tendency of one or more components of a liquid or gas to collect on the surface of a solid. This tendency can be leveraged to remove solutes from a liquid or gas or to separate compo-nents that have different affinities for the solid. The process objective may be either waste treatment or the purification of valuable components of a feed stream. In an Adsorption process, the solid is called the adsorbent and the solute is known as the adsorbate. Commercial adsorbents are highly porous, with pore sur-face areas ranging from about 100 to 1,200 m2/g. The large surface area allows a large amount of Adsorption relative to the weight of the adsorbent, well in excess of its own weight in some cases.
the length of the bed until it reaches nearly zero. Meanwhile, fresh feed continues to enter the column, so that the portion of the bed the feed contacts initially is continually exposed to fluid at the feed concentration. Eventually that part of the bed reaches equilibrium with the feed, and no additional net mass transfer occurs. When the
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