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CHE
345
Mass Transfer
Molecular mass transport in fluids, transport phenomena and the basic equation of change, molecular mass transport in liquids, mass transport phenomena in solids, mass transfer coefficient in laminar and turbulent flow, interphase mass transport, continuous two-phase mass transport.
Prerequisites:
0600307 or 0600308,0640211,0640343
0640345
(3-0-3)

Prerequisites by Topic:

  • Differential Equations.
  • Elements of material balance.
  • The conservation of equations of momentum and heat transfer.
  • Rate equations, steady state and transient processes.

Textbook(s):

Mass Transport Phenomena. Geankoplis, Holt Reinchart and Winston, Inc., 1971.

Reference(s):

Transport Phenomena. R. Bird, W. Stewart, E. Lightfoot., Wiley Inc., 2^nd Edition (2009)

Topics Covered:

  • Fundamentals of Mass Transport Phenomena: Molecular Mass Transport, diffusion coefficient, and convective mass transport and their analogies in momentum and heat transport (6 hours).
  • Diffusion equations (4 hours).
  • Steady state molecular diffusion (4 hours).
  • Unsteady state molecular diffusion (6 hours).
  • Convective momentum, heat and mass transfer and mass transfer theories (9 hours).
  • Interphase mass transfer (6 hours).
  • Design of continuous contactors: Packed gas absorption/liquid strippers columns (6 classes).

Assessment Criteria:

  1. Quizzes
  2. Homework
  3. Term Exams
  4. Projects / Final Exam

Course Objectives:

  1. To introduce fundamentals and theories of mass transfer [1, 2]
  2. To teach students design methodologies for continuous contractors, such as absorption columns, Extractors and equilibrium processes [2, 3]

Performance Criteria:

Objective 1:

Students will be able to:

1. Evaluate properties and parameters related to mass transfer by using appropriate correlations and experimental data (6)

2. Identify and formulate problems that have multi-mode of mass transfer such as molecular diffusion and convective mass transfer. (1)

3. Solve mass transfer equation to obtain the concentration profile of different mass transfer operations. (1)

4. Identify and formulate unsteady mass transfer situations with using advance mathematics to obtain the solution. (1)

Objective 2:

Students will be able to:

1. Apply design principles on packed and staged contactors to obtain its dimension under specified constrains. (2, 3)

2. Evaluate performance of existing packed and staged contractors under specified feed qualities. (1, 2)

ABET Category Content:

Engineering Science: 2 credits or 67%

Engineering Design: 1 credit or 33%

Course Classification

Student Outcomes Level (L, M, H) Relevant Activities
1. An ability to identify, formulate, and solve complex engineering problems by applying principles of engineering, science, and mathematics. H Solve differential mass diffusion/convection equation to obtain the concentration profile of systems that has multi-mode of mass transfer. Solve unsteady mass transfer by using quasi-steady state principle or Laplace transform. Use correlation to obtain required parameters for designing contactors.
2. An ability to apply engineering design to produce solutions that meet specified needs with consideration of public health, safety, and welfare, as well as global, cultural, social, environmental, and economic factors. M Design a staged contactor by using Mc-Cabe method to find required number of stages. Design Packed column (contactor) by using correlations and graphical method to obtain the diameter and length. Design of the contractors will be passed on Environmental regulations set by KEPA or EPA on the chemical processes waste streams.
3. An ability to communicate effectively with a range of audiences. L Prepare and conduct final written report and oral presentation for term project.
4. An ability to recognize ethical and professional responsibilities in engineering situations and make informed judgments, which must consider the impact of engineering solutions in global, economic, environmental, and societal contexts.
5. An ability to function effectively on a team whose members together provide leadership, create a collaborative and inclusive environment, establish goals, plan tasks, and meet objectives. L Assign the term project to a team of 2-3 students to plan to conduct solution strategy and to present the findings.
6. An ability to develop and conduct appropriate experimentation, analyze and interpret data, and use engineering judgment to draw conclusions. L Evaluate mass diffusivity using appropriate experimental correlations and compare its order of magnitude for different material category. Evaluate mass transfer coefficient using experimental correlations.
7. An ability to acquire and apply new knowledge as needed, using appropriate learning strategies.