انتقال المادة

Concept of mass transfer operations and its role in separation processes.

Molecular diffusion; general law for diffusion and convection, equimolar counter diffusion, transfer across stagnant layer, effect of changing area.

Diffusion coefficient estimation in gases and liquids with their applications.

Fickian diffusion in solids.

Convective mass transfer, general equation, mass transfer coefficient concept, dimensionless analysis, analogy between heat, mass and momentum transfer.

Mass transfer correlations for different geometries with relevant applications.

Multi-components gas diffusion and non-Fickian Knudsen diffusion in micro-porous solids.

Interface mass transfer; two resistance theory, relationship between overall and individual mass transfer coefficients.

Packed bed and tray tower absorbers.

Theory of single and multiple equilibrium contact stages, Design of tray towers for absorption, Understanding the concept about the operating line and equilibrium lines in design of absorption column.

Detailed design of packed bed absorbers, Use of equilibrium theory to compute Number of Transfer Units, Use of mass transfer theory to compute height of transfer units.

Design issues of absorber for concentrated solutions.

Calculation of absorber diameter and mass transfer coefficients.