Recovery of carboxylic acid from organic solution that contains an amine and an extraction enhancer
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United States of America Patent
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Jul 14, 1998
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N/A
app pub date -
Nov 25, 1996
filing date -
May 23, 1994
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Expired
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Abstract
Recovery of carboxylic acid from an amine-based, water-immiscible organic extractant solution thereof that contains an enhancer, by extraction of the acid into an aqueous phase. A low molecular, at least partly water-miscible organic compound being a C.sub.2 -C.sub.5 alkanol, an acetate of a C.sub.1 -C.sub.3 alkanol and acetone is used as enhancer. In operation, the enhancer is recovered and recycled. The process is applicable, among others, to the recovery of carboxylic acid from a fermentation broth.
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