Interactive Self-Study Module: Hunter-Nash Method for Liquid-Liquid Extraction
Department of Chemical and Biological Engineering, University of Colorado Boulder 
Overview:

This module uses screencasts and interactive simulations to explain how to use the Hunter-Nash Method for liquid-liquid extraction. It then provides example problems and step-by-step quiz simulations to allow the user to test themselves. We suggest using the learning resources in the following order:

  1. Attempt to answer the multiple-choice ConcepTest and the example problem before watching the screencasts or working with the simulations.
  2. Watch the screencasts that describe the Hunter-Nash method and answer the questions within the screencasts.
  3. Use the two interactive simulations to further understand liquid-liquid extraction.
  4. Use the quiz interactive simulations to test your understanding by carrying out a step-by-step preparation of a ternary phase diagram and applying the Hunter-Nash method.
  5. Try to solve the two example problems before watching the solutions in the screencasts.
  6. Answer the ConcepTests.
Motivation:

This module is intended for a separations course.


Before studying this module, you should:


After studying this module, you should be able to:
  • Graphically locate the mixing point on a ternary phase diagram.
  • Graphically locate the operating point on a ternary phase diagram.
  • Determine the extract composition for liquid-liquid extraction, given feed and solvent compositions and flow rates, and the desired raffinate composition.
  • Use mass balances and ternary phase diagrams to determine the outlet compositions from a liquid-liquid extraction.
  • Use a ternary phase diagram to determine the number of stages needed for liquid-liquid extraction.