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Course Info

About this Course

This subject introduces the students to one of the fundamental knowledge that the students must acquire in mass transfer and mass transfer operations. The topics covered include the concepts of mass transfer and equipment design for gas absorption, adsorption and drying. Students are also will be exposed to engineering tools to solve the engineering calculations especially related to mass transfer problems.

Course Syllabus

Introduction to Mass Transfer and Diffusion
1.1 Similarity of Mass, Heat and Momentum Transfer Processes
1.2 Examples of Mass-Transfer Processes
1.3 Fick’s Law for Molecular Diffusion

Types Molecular Diffusion
2.1 Molecular Diffusion in Gases
2.2 Molecular Diffusion in Liquids
2.3 Molecular Diffusion in Solids

Convective Mass Transfer Coefficients
3.1 Introduction to Convective Mass Transfer
3.2 Types of Mass-Transfer Coefficients
3.3 Mass Transfer Coefficient for Various Geometries
3.3.1 Mass Transfer Coefficients in Laminar and Turbulent Flow
3.3.2 Mass Transfer for Flow Inside Pipes
3.3.3 Mass Transfer for Flow Outside Solid Surfaces
3.3.3.1 Flat Plate
3.3.3.2 Sphere
3.3.3.3 Cylinder
3.3.3.4 Packed Bed

Gas Absorption
4.1 Definition, Applications and Notations used in Gas Absorption
4.2 Gas-liquid Equilibrium for Ideal Solution According to Raoult's Law
4.3 Single and Multistages Countercurrent Gas Absorption
4.3.1 Mass Balance in Gas Absorption Process
4.3.2 Determination the Number of Theoretical Stages using Graphical and Analytical Method
4.4 Packed tower
4.4.1 Packing Materials – Description and Flow Arrangement
4.4.2 Pressure Drop and Flooding in Packed Tower
4.4.3 Packed Tower Design
4.4.3.1 Minimum Liquid Flow
4.4.3.2 Determination of Tower Height using Film and Overall Mass Transfer Coefficients (Two Film Theory) and Transfer Units

Adsorption
5.1 Introduction
5.2 Physical Properties and Structure of Adsorbents
5.3 Equilibrium Relations for Adsorbents
5.4 Batch Adsorption
5.5 Determination of Fixed-Bed Adsorption Column Height


Drying
6.1 Introduction and Methods of Drying
6.1.1 Purposes of Drying
6.1.2 General Methods of Drying
6.2 Equipment for Drying
6.3 Vapor Pressure of Water, Humidity, Adiabatic Saturation Temperatures and Wet Bulb Temperature using Psychrometric Chart
6.4 Mechanism of Drying
6.4.1 Drying at Constant Rate Period
6.4.2 Drying at Falling Rate Period


Frequently Asked Questions

Q1 : What is Mass Transfer?
A1 : Movement of mass of gas, liquid or solid.