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Improved ethanol–water separation using fatty acids

Paper ID Volume ID Publish Year Pages File Format Full-Text
36636 45138 2006 4 PDF Available
Title
Improved ethanol–water separation using fatty acids
Abstract

As a means to reduce the processing costs for separating ethanol from fermentation broth, several fatty acids have been tested as liquid solvents for extracting ethanol from water. Valeric acid, the lowest molecular weight fatty acid used in this study, extracted the most ethanol but was not an ideal solvent since it also extracted water and was quite soluble in water. Oleic acid, the highest molecular weight fatty acid used in this study, was not soluble in water but was not a good solvent because it extracted low amounts of ethanol. Nonanoic acid was found to be the best extracting solvent, providing a reasonable ethanol distribution coefficient (0.354) and a 69.5% vapour rich ethanol stream using flash separation. Nonanoic acid extraction combined with the flash process is shown to require 38% less thermal energy to separate an equivalent amount of ethanol from fermentation broth compared to the traditional distillation process.

Keywords
Fermentation ethanol; Liquid–liquid extraction; Fatty acid solvents; Economics
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Improved ethanol–water separation using fatty acids
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 4, April 2006, Pages 980–983
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us