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Process for recovering low-boiling acids
(United States. Patent and Trademark Office, 2002-05-28)
The invention provides a method for recovering low-boiling acids from a concentrated solution of the calcium salt of the acid by treating the concentrated solution of calcium salts of the low-boiling acids with a high ...
Recovery of fermentation salts from dilute aqueous solutions
(United States. Patent and Trademark Office, 2002-11-12)
Dilute solutions of fermentation sales may be concentrated by extracting water using low-miscibility, low-molecular-weight secondary and tertiary amines, e.g. triethylamine (TEA), diisopropyl amine (DIA), N,N-diethylmethylamine ...