Abstract
Production of chemicals through environmentally benign processes requires effective methods for
the recovery of typically highly hydrophilic products from the complex fermentation broth.
Carboxylic acids, which are of high interest as building blocks for biodegradeable plastics, can be
produced via fermentation. Their recovery is often done through extraction using tertiary amines.
However, in order to become an economically viable alternative for traditional chemical synthesis,
this process needs to be improved. This paper reports an extractant screening study for the model
solutes lactic acid and succinic acid, aiming at better process efficiency. A range of extractants
were evaluated, including amines, amides, superbases, guanidines and N-oxides. Octanol, 2-octyl-
1-dodecanol and heptane were used as diluents. Batch extraction experiments were done under
compareable conditions (20 % wt extractant in octanol, 1.2% wt acid, ambient temperature) to
evaluate the performances of the various extractants. The highest distributions (D) were observed
for tertiary amines; D = 30 for lactic acid and D = 45 for succinic acid. The extraction performance
with N-oxides and superbases was in both cases negligible (D
Original language | English |
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Title of host publication | Proceedings of the 19th International Solvent Extraction Conference - ISEC 2011, 3-7 October 2011, Santiago, Chile |
Pages | 1-7 |
Publication status | Published - 2011 |
Event | 19th International Solvent Extraction Conference (ISEC 2011), October 3-7, 2011, Santiago, Chile - Santiago, Chile Duration: 3 Oct 2011 → 7 Oct 2011 https://gecamin.com/isec2011/index.php?option=com_content&view=frontpage&Itemid=1&lang=en |
Conference
Conference | 19th International Solvent Extraction Conference (ISEC 2011), October 3-7, 2011, Santiago, Chile |
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Abbreviated title | ISEC 2011 |
Country | Chile |
City | Santiago |
Period | 3/10/11 → 7/10/11 |
Internet address |