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Processs for production and purification of fermentation derived organic acids

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
A method of producing and purifying an organic acid by producing an aqueous solution of the ammonium salt of the organic acid through fermentation and/or bioconversion and neutralization. The solution is heated to thermally crack the ammonium salt of the organic acid producing a vapor phase of ammonia and water and organic acid which is thereafter passed in contact with a membrane permeable to water and ammonia and substantially impermeable to the organic acid vapor to concentrate the aqueous solution of organic acid, and remove the ammonia and excess water.
Datta, Rathin (Chicago, IL), Henry, Michael (Batavia, IL), Martin, Edward J. St. (Libertyville, IL)
The University of Chicago (Chicago IL)
10/ 859,259
June 2, 2004
[0001] The United States Government has rights in this invention pursuant to Contract No. W-31-109-ENG-38 between the U.S. Department of Energy (DOE) and The University of Chicago representing Argonne National Laboratory.