C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 53/00 (2006.01) B01D 61/02 (2006.01) B01D 61/04 (2006.01) C07C 51/42 (2006.01) C07C 51/48 (2006.01)
Patent
CA 2117595
A method for recovering carboxylic acids from a dilute aqueous solution thereof having a concentration below about ten percent (10%) by weight, which includes passing the dilute acid solution through a reverse osmosis separator, thereby producing a permeate substantially free of acid and a retentate having an acid concentration above about ten percent (10%) by weight. The retentate is contacted with a liquid extractant for acids to produce an acid-rich extractate and an acid-free raffinate. The acid is then recovered from the acid-rich extractate.
Gentry Joseph Charles
Gualy Ronald G.
Holmes Timothy L.
Mcintyre John Carl
Wytcherley Randa W.
Finlayson & Singlehurst
Glitsch Inc.
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