ENCH396-23S1 (C) Semester One 2023

Chemical Engineering Separations 1

15 points

Start Date: Monday, 20 February 2023
End Date: Sunday, 25 June 2023
Withdrawal Dates
Last Day to withdraw from this course:
  • Without financial penalty (full fee refund): Sunday, 5 March 2023
  • Without academic penalty (including no fee refund): Sunday, 14 May 2023


Chemical engineering separation operations including humidification/dehumidification, drying, membrane separations, leaching and washing, crystallisation, ion exchange, distillation, gas absorption and liquid-liquid extraction.

An introduction to the fundamental principles of equilibrium conditions and heat and mass transfer.

Consistent methodology is applied to demonstrate how fundamental principles are used to design and operate separation unit operations.

• Fundamental principle (unit operation)
• Separation physical challenge
• Separation process metrics
• Solubility (Washing and leaching)
• Equilibrium stages (Washing and leaching)
• Counter-current, cross-current, and co-current design (Washing and leaching)
• Vapour-liquid equilibria (Distillation)
• Operating equations (Distillation)
• Mass transfer limitations (Gas Absorption)
• Steady-state processes (Membranes)
• Heat transfer (Drying)
• Humidity (Humidification)
• Combined heat and mass transfer (Drying and Humidification)
• Roles of separation engineers (Industrial interviews)
• Project management (Optional)

Learning Outcomes

  • Students should:

  • Fully understand physical equilibria.
  • Understand the process metrics for separation process design.
  • Understand equilibrium stages.
  • Design staged separation processes.
  • Understand how heat and mass transfer limitations affect separation process operation and design.
  • Gain insight into professional separation engineering roles.
  • Improve formatting and written report skills.
  • Be able to identify and apply separation design principles in any separation process.


Timetable 2023

Students must attend one activity from each section.

Lecture A
Activity Day Time Location Weeks
01 Monday 14:00 - 15:00 Rehua 528
20 Feb - 2 Apr
24 Apr - 4 Jun
Lecture B
Activity Day Time Location Weeks
01 Friday 15:00 - 16:00 A5 Lecture Theatre
20 Feb - 2 Apr
24 Apr - 4 Jun
Lecture C
Activity Day Time Location Weeks
01 Tuesday 13:00 - 14:00 Ernest Rutherford 141
20 Feb - 2 Apr
24 Apr - 4 Jun

Examination and Formal Tests

Test A
Activity Day Time Location Weeks
01 Friday 18:30 - 20:30 E5 Lecture Theatre
1 May - 7 May

Course Coordinator

Matthew Cowan


Assessment Due Date Percentage  Description
Final Exam 45%
Assignment 1 10 Mar 2023 10% Equlibrium stage process design (Washing and leaching)
Assignment 2 26 Apr 2023 15% Mass transfer modifications to equilibrium stage process design (Gas absorption)
Test 02 May 2023 20% : Vapour-liquid equilibria, operating equations, and mass transfer (Distillation)
Assignment 3 19 May 2023 10% Roles of separation engineers (Industrial interviews)

36 lectures, 3 assignments and 1 test.

Attendance at all lectures is highly encouraged. Students who do not complete all assignments and the exam are much less likely to pass.

You have optional involvement in using a project management software to organize your ENCH396 schedule and workload.

Textbooks / Resources

Required Texts

Seader, J. D. , Henley, Ernest J., Roper, D. Keith; Separation process principles : chemical and biochemical operations ; 3rd ed; Wiley, 2011.

Wankat, Phillip C; Separation process engineering : includes mass transfer analysis ; 3rd ed; Prentice Hall, 2012.


All information about academic policies (e.g. special consideration, dishonest practice) can be found on the ENCH-Undergraduate LEARN page.

This is a compulsory course. It provides preparation for ENCH494 and for graduate employment. Prerequisite: ENCH292

Indicative Fees

Domestic fee $1,030.00

International fee $5,750.00

* All fees are inclusive of NZ GST or any equivalent overseas tax, and do not include any programme level discount or additional course-related expenses.

For further information see Chemical and Process Engineering .

All ENCH396 Occurrences

  • ENCH396-23S1 (C) Semester One 2023