Physics
Chemistry
The Difference Between

What is the difference between absorption and adsorption?

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2016-07-01 05:56:07

Answer 2

  • Absorption is the process in which a fluid is dissolved

    by a liquid or a solid (absorbent).

  • Adsorption is the process in which atoms, ions or

    molecules from a substance (it could be gas, liquid or dissolved

    solid) adhere to a surface of the adsorbent. Adsorption is a

    surface-based process where a film of adsorbate is created on the

    surface while absorption involves the entire volume of the

    absorbing substance. There are some adsorption analyzers (eg V-Sorb

    2800P) by using gas (like N2, Kr etc) as adsorbates to attach on

    materials to get samples adsorption isotherms, then to know surface

    area, pore size and so on data.

Adsorption: Some of the industrial applications

for adsorption are air-conditioning, adsorption chillers, synthetic

resin and water purification. An adsorption chiller does not

require moving parts and hence is quiet. In pharmaceutical industry

applications, adsorption is used as a means to prolong neurological

exposure to specific drugs or parts thereof. Adsorption of

molecules onto polymer surfaces is used in various applications

such as in the development of non-stick coatings and in various

biomedical devices.

Absorption: The common commercial uses of

absorption cycle are absorption chillers for space cooling

applications, ice production, cold storage, turbine inlet cooling.

High efficiency operation, environmentally friendly refrigerants,

clean-burning fuels and few moving parts that require maintenance

make absorption a very good choice for consumers. The process of

gas absorption by a liquid is used in hydrogenation of oils and

carbonation of beverages.

Answer 1 Adsorption and absorption are two

different things.

  • Absorption is the chemical integration of one chemical into

    another. When you drink a glass of water, you are absorbing it, as

    the water becomes part of you.

  • Adsorption occurs when one substance holds another via physical

    bonds. If you spill a glass of water on your shirt, it is adsorbed

    as the fibres will hold the water until heat dries out the

    shirt.


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