PURIFICATION OF ORGANIC ACIDS USING ANION EXCHANGE CHROMATOGRAPHY

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:

PCT/US1999/004408

Publication Date:

December 16, 1999

Filing Date:

March 01, 1999

Export Citation:

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Assignee:

MICHIGAN BIOTECH INST (US)
PONNAMPALAM ELANKOVAN (US)

International Classes:

B01D15/04; C07C51/47; C07C53/08; C07C51/42; C07C55/10; C07C59/265; C11B3/10; C11B13/00; C11C1/08; (IPC1-7): C11B3/10; C11B13/00; C07C51/42

Foreign References:

US2664441A	1953-12-29
US2697724A	1954-12-21
US3015655A	1962-01-02
US4578223A	1986-03-25
US5102582A	1992-04-07
US5179219A	1993-01-12
US5362895A	1994-11-08
US5412126A	1995-05-02

Other References: