B.E. (Chemical Engineering) Mass Transfer Operations I Syllabus - Mumbai University 2026

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The University has moved this degree onto NEP 2020 one year at a time. The first, second and third years are on NEP 2020; the final year is still on the REV-2019 'C' Scheme, which is what the University sets for it this year.

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Syllabus for Mass Transfer Operations-I

Semester 5 · Third Year BE Chemical

Module 1: Molecular diffusion (Gases, liquids, and solids)

• Definition of molecular diffusion • Definition of molar flux and types. • Fick’s first law of molecular diffusion • Steady-state molecular diffusion in binary gas mixtures: • One component diffusing in a non-diffusing second component, • Equimolal counter diffusion of two components. • Numerical example • Steady-state molecular diffusion in binary liquid solutions • One component diffusing in a non-diffusing second component. • Equimolal counter diffusion of two components. • Numerical examples • Theoretical estimation of diffusivities for gases and liquids. • Fick’s-law diffusion through solids. • Types of solid diffusion Self-Learning Topics • Molecular diffusion through multicompartment gas mixtures. • Derivation of the equation of continuity

Module 2: Mass transfer coefficients

• Definition of mass transfer coefficient. • F-type and k-type mass transfer coefficients. • Relations between F-type and k-type mass transfer coefficients, for binary gas and liquid mixtures, for the following cases • One component diffusing in a non-diffusing second component • Equimolal counter diffusion of two components. • Prediction of mass transfer coefficients in laminar flow. • Theories of mass transfer for predicting mass transfer coefficients in turbulent flow. • Introduction to interphase mass transfer • Two-film theory for interphase mass transfer. • The concept of individual and overall mass transfer coefficients. • The relation between individual and overall mass transfer coefficients for mass transfer between gas and liquid phases. • Numerical examples • Methods of contacting two insoluble phases Self-Learning Topics • Comparison of molecular with turbulent diffusion • Various dimensionless groups in mass transfer • Steady-state material balance for different types of processes.

Module 3: Equipment for gas- liquid contacting.

• Classification of equipment for gas-liquid contacting. • Equipment in which the gas phase is dispersed and the liquid phase is continuous. • Sparged vessels (Bubble columns) • Mechanically agitated vessels/ • Tray columns • Equipment in which the liquid phase is dispersed, and the gas phase is continuous. • Venturi Scrubber • Wetted wall column • Spray column • Packed column • Comparison between packed and tray columns Self-Learning Topics • Various types of tray efficiencies • Advanced equipment for gas-liquid contact.

Module 4: Gas Absorption

• Fundamentals of gas absorption • Definition • Equilibrium solubility of gases in liquids • Effect of temperature and pressure on the equilibrium solubility. • Ideal and non-ideal solutions • Choice of a suitable solvent for gas absorption. • Single-component absorption • Equations of operating line for co-and counter-current operations. • Minimum liquid to gas ratio. • Counter-current multistage operation with numerical examples based on the estimation of the number of stages. • Absorption in a packed column with numerical examples based on the estimation of NTU, HTU and height of packed bed. Self-Learning Topics • Absorption with chemical reaction

Module 5: Drying

• Fundamentals of drying • Definition • Equilibrium • Definitions of different types of moisture contents. • Batch drying • Rate of drying. • Drying curve • Typical rate of drying curve • Time of batch drying and numerical examples based on it. • Equipment for batch and continuous drying Batch Drying a. Tray Dryers b. Vacuum Dryer c. Fluidized Bed Dryer Continuous Drying b. Spray Dryer c. Rotary Dryer Self-Learning Topics • Material and Energy Balance for Continuous Dryers • Green and Sustainable Drying

Module 6: Humidification and dehumidification

• Fundamentals • Definition of humidification and dehumidification. • Vapour-pressure curve • Definitions of various properties of vapour- gas mixtures. • Wet-bulb temperature theory. • Derivation of the equation of adiabatic saturation curves. • Humidity charts. • Various cooling tower arrangements Self-Learning Topics • Design of cooling towers • Non-Adiabatic Operation: Evaporative Cooling

Textbooks

1 Treybal R.E., Mass transfer operation, 3 Ed., McGraw-Hill Hill New York, 1980.
2 Datta B.K., Mass Transfer and separation processes, Eastern economy edition, PHI learning private ltd, New Delhi, 2009
3 G. K. Roy, Fundamentals of Heat and Mass Transfer, Khanna Publication, New Delhi
1 McCabe W.L. and Smith J.C., Unit operations in chemical engineering, 5 Ed., McGraw-Hill, New York, 1993
2 Geankoplis C.J., Transport Processes and Unit Operations, Prentice Hall, New Delhi, 1997
3 Coulson J.M. Richardson J.F., Backhurst J.R. and Harker J.H., Coulson and Richardson chemical engineering, vol 1 & 2, Butterworth Heinmann, New Delhi, 2000
4 R.K. Sinnott (Ed), Coulson and Richardson chemical engineering, vol 6, Butterworth Heinemann, New Delhi, 2000
1 Swayam - NPTEL

Reproduced from the University of Mumbai syllabus for B.E. (Chemical Engineering) under NEP 2020, in force from the academic year 2026-27. Wording is as printed in that syllabus. Module numbering is as printed there too.

The complete syllabus

This subject is cut from the University circular for its year. Open a document here if you want the whole thing rather than a single subject.

PDF Revised Syllabus for B.E. (Chemical Engineering), Semester I & II - the whole circular NEP 2020 syllabus, in force from 2024-25 Read full PDF Read

PDF Revised Syllabus for B.E. (Chemical Engineering), Semester III & IV - the whole circular NEP 2020 syllabus, in force from 2025-26 Read full PDF Read

PDF B.E. (Chemical Engineering), Semester V & VI - the whole circular NEP 2020 syllabus, in force from 2026-27 Read full PDF Read

PDF Revised Syllabus for B.E. Final Year Chemical Engineering, Semester VII & VIII - the whole circular REV-2019 'C' Scheme syllabus, in force from 2022-23 Read full PDF Read

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