Friday, November 30, 2007

(BT05354) MASS TRANSFER AND SEPARATION

Unit I: Introduction to Mass Transfer and Diffusion
Introduction to Mass Transfer Operations; Fick’s Law of Diffusion, Gas diffusion
and Liquid diffusion (one component transferring to non-transferring component
and equimolar counter diffusion.) Diffusivity estimation (Stefan’s experiment);
permeability, distribution of gas and liquid components through solid, diffusion of
biological solutes in liquids, diffusion in biological gels.
Unit II: Mass Transfer Co-efficient (MTC)
Definition of MTC, F-type, K-type coefficients, Dimensionless numbers, Sherwood
number, Stanton number, Schmidt number; estimation of MTC for the case where
mass is diffusing from solid wall to bulk liquid. (Flat plates, cylindrical tubes) and
flow past single solids.
UNIT III :
Interface mass transfer, gas phase controlling, and liquid phase controlling
operations.
Unit IV: Gas Liquid Operation - I
Absorption: Definition, Solubilities of gases in liquids, single stage (one component
transferring) operation.
Unit V: Gas Liquid Operation -I I
Distillation: VLE, single stage equilibrium distillation, simple distillation and steam
distillation operation; continuous distillation (McCabe Thiele method only).
UnitVI: Liquid – Liquid and Solid –Liquid operations -I
Liquid-Liquid extraction: LLE, types of equilibrium system, Singe stage extraction,
Multi stage cross and counter current operations.
Solid liquid operation: Leaching, SLE, Single stage leaching.
UnitVII: Liquid – Liquid and Solid –Liquid operations -II
Adsorption: Physical adsorption, Chemisorption, Adsorption hysterisis, adsorption
isotherm, Single stage operation, Fixed bed adsorption.
Unit VIII: Membrane Separation Processes
Dialysis; Hemodialysis; Gas permeation process, introduction to types of flow in
gas permeation; hollow – fiber separation assembly, reverse osmosis, application
of reverse osmosis, introduction of ultra filtration processes and micro filtration
processes.
TEXT BOOKS:
1. Robert E. Treybal, Mass Transfer Operations III Edition, Mc. Graw Hill
International.
2. Christi J. Geankoplis, Transport process & Unit operations, Ill ed., Prentice
Hall India Pvt. Ltd.
REFERENCES:
1. Judson Kind: Separation Processes, II Edition, Mc Graw Hill Chemical
Engineering series.
2. Philip A. Schweitzer, Handbook of separation Techniques for chemical
Engineering, III Edition, Mc. Graw Hill.
3. Philip C. Wankat Rate, Controlled separations, Chapman and Hall, 1985.

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