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Patent Searching and Data


Title:
PURIFICATION OF ORGANIC ACIDS USING ANION EXCHANGE CHROMATOGRAPHY
Document Type and Number:
WIPO Patent Application WO1999044707
Kind Code:
A3
Abstract:
Disclosed is a cost-effective method for purifying and acidifying carboxylic acids, including organic acids and amino acids. The method involves removing impurities by allowing the anionic form of the carboxylic acid to bind to an anion exchange column and washing the column. The carboxylic anion is displaced as carboxylic acid by washing the resin with a strong inorganic anion. This method is effective in removing organic carboxylic acids and amino acids from a variety of industrial sources, including fermentation broths, hydrolysates, and waste streams.

Inventors:
PONNAMPALAM ELANKOVAN (US)
Application Number:
US9904408W
Publication Date:
December 16, 1999
Filing Date:
March 01, 1999
Export Citation:
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Assignee:
MICHIGAN BIOTECHNOLOGY INSTITUTE
PONNAMPALAM, ELANKOVAN
International Classes:
C07C51/42; B01D15/04; C07C51/47; C07C53/08; C07C55/10; C07C59/265; C11B3/10; C11B13/00; C11C1/08; (IPC1-7): C11B3/10; C11B13/00; C07C51/42
Foreign References:
US2664441A1953-12-29
US2697724A1954-12-21
US3015655A1962-01-02
US4578223A1986-03-25
US5102582A1992-04-07
US5179219A1993-01-12
US5362895A1994-11-08
US5412126A1995-05-02
Other References:
See also references of EP 1059975A2
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