Question

Why molecular diffusion is not used in mass transfer equipment?

Answer 1

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Mass transfer is the transport of a substance (mass) in liquid and gaseous media.
Depending on the conditions, the nature, and the forces responsible for mass transfer, four basic types are distinguished:

(1) diffusion in a quiescent medium,

(2) mass transfer in laminar flow,

(3) mass transfer in the turbulent flow, and

(4) mass exchange between phases.
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