Mass Transfer
In case of an absorber, the operating

Line can be either above or below the equilibrium curve
Line always lies below the equilibrium curve
Line always lies above the equilibrium curve
Velocity is more than the loading velocity

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Mass Transfer
An example of elutioh is

Separation of uranium oxide from its ore by H₂SO₄ in a Pachuca tank
Recovery of vegetable oils from seeds
Dissolution of tannin out of tree barks by water
Separation of sugar from sugar beet by hot water

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Mass Transfer
Priming in a distillation column

Reduces the overall pressure drop
Is characterised by the presence of foam throughout the space between trays
Results from very low gas velocity
Is desirable from point efficiency consideration

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