Recovery of carboxylic acid from organic solution that contains an amine and and an extraction enhancer
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United States of America Patent
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Jun 30, 1998
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N/A
app pub date -
Dec 6, 1996
filing date -
Jul 4, 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 extraction enhancer, by extraction of acid into an aqueous phase. In a preliminary step the enhancer is removed from the extractant solution by extraction with an aqueous solution containing at least 50 % by weight of a salt of the carboxylic acid present in the extractrant. The process is applicable to the recovery of carboxylic acid from a fermentation broth.
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