Concept of Absorption

Absorption
   Absorption is also called as gas absorption, gas scrubbing or gas washing.
  In absorption there is transfer of one or more species from gas phase to liquid solvant.
  Absorption involved no change in chemical species present in the system
  Absorption is used to
1. To separate gas mixtures.
 2. To remove impurities.
 3. To remove or recover valuable chemicals.
   The operation of removing the absorbed solute from the solvent is called stripping.



Gas absorption is usually carried out in vertical counter coloum.
The solvent is feed from of coloum where as gas is feed from bottom of colum.
The absorbed substance is washed out by the solvent and leaves the absorber at bottom as liquid solution.




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