Liquid-liquid extraction - 2014

From Separation Processes: 4M3
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Class date(s): 29 October 2014
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References

Please use these references to read ahead, or for extra background reading on liquid-liquid extraction. In alphabetical order:

  • Ghosh, R. "Principles of Bioseparations Engineering", Chapter 7, McMaster (reserve)
  • Geankoplis, C.J. "Transport Processes and Separation Process Principles", Chapter 12 in 3rd and 4th edition, McMaster Libraries (reserve)
  • Perry's Chemical Engineers' Handbook, Chapter 15, Direct link (McMaster subscription)
  • Richardson and Harker, "Chemical Engineering, Volume 2", 5th edition, Chapter 13 ebook
  • Schweitzer, "Handbook of Separation Techniques for Chemical Engineers", Chapter 1.9, McMaster library
  • Seader, Henley and Roper, "Separation Process Principles", Chapter 8 in 2nd and 3rd edition McMaster Libraries (reserve)
Date Class number Topic Slides for class Video and audio files References and Notes
29 October 09B

Liquid liquid extraction overview

Slides

Video Audio

A comprehensive article on liquid-liquid extraction which describes the various units available.

04 November 10A

Liquid liquid extraction theory and calculations

Slides

Video Audio
  • The flowsheet for separating acetic acid from water using ethyl acetate solvent. This flowsheet has the mass flow rates, to help contrast it to distillation.
Acetic-acid-water-ethyl-acetate-flowsheet-Seader-3ed-p300.jpg click image to enlarge

[reference: Seader et al., p300]

05 November 10B

Liquid liquid extraction example calculations

Slides

Video Audio
07 November 10C

Liquid liquid extraction example calculations

Slides

Video Audio

Web links shown in the class:

11 November 11A

Liquid liquid extraction example calculations

Slides

Video Audio

These readings seem old, but they are still relevant. For example, the same principles are used in modern bioseparations.

  1. A reading on solvent extraction principles
  2. A general article on liquid liquid extractors.
  3. An interesting reading on safety in liquid-liquid extraction plants: a further reason for counter-current operations to minimize solvent use.

Exercise

Adsorption-example-from-VLE-raw-data.png click image to enlarge

See this YouTube video for the full solution..