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.
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.