Liquid-liquid extraction - 2014

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. click image to enlarge [reference: Seader et al., p300]
05 November	10B	Liquid liquid extraction example calculations	Slides	Video	Audio	The ternary diagram that will be used in today's class. Download and print it out for practice problems. Here's another instructor's slides on the same topic - sometimes a different point of view helps to understand.
07 November	10C	Liquid liquid extraction example calculations	Slides	Video	Audio	Web links shown in the class: Rotating disc column Karr column Scheibel column Pulsed and packed columns
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. A reading on solvent extraction principles A general article on liquid liquid extractors. An interesting reading on safety in liquid-liquid extraction plants: a further reason for counter-current operations to minimize solvent use.

Exercise

click image to enlarge

See this YouTube video for the full solution..