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Regeneration of carboxylic acid-laden basic sorbents by leaching with a volatile base in an organic solvent

United States Patent

5,965,771
October 12, 1999
View the Complete Patent at the US Patent & Trademark Office
Lawrence Berkeley National Laboratory - Visit the Technology Transfer and Intellectual Property Management Department Website
Carboxylic acids are sorbed from aqueous feedstocks onto a solid adsorbent. The acids are freed from the sorbent phase by treating it with an organic solution of alkylamine thus forming an alkylamine/carboxylic acid complex which is decomposed with improved efficiency to the desired carboxylic acid and the alkylamine. Carbon dioxide addition can be used to improve the adsorption or the carboxylic acids by the solid phase sorbent.
King; C. Judson (Kensington, CA), Husson; Scott M. (Berkeley, CA)
The Regents of the University of California (Oakland, CA)
08/ 943,514
October 3, 1997
ORIGIN OF THE INVENTION This invention was made in the performance of work funded by the "Biochemical and Chemical Technology Research" (BCTR) program of the United States Department of Energy under Contract No. DE-AC03-76SFO0098. The United States Government has rights to this invention.