C - Chemistry – Metallurgy – 25 – B
Patent
C - Chemistry, Metallurgy
25
B
C25B 3/00 (2006.01) B01D 61/44 (2006.01) C07C 227/40 (2006.01) C07C 229/26 (2006.01) C07C 277/08 (2006.01) C07C 279/14 (2006.01) C07D 233/64 (2006.01) C12P 13/08 (2006.01)
Patent
CA 2292334
The invention uses a stack of three compartment electrodialysis cells in a process for the production amino acid hydrochloride and an alkali. The electrodialysis cell contains bipolar, cation and anion membranes which are arranged to form acid, base and salt compartments. The process begins with supplying a salt solution to the salt compartment, water to the base compartment, and a liquid comprising an amino acid to the acid compartment. Preferably, the feed salt is sodium chloride or potassium chloride or lithium chloride. A direct current driving force is applied across the cell to convert the salt solution to an alkali in the base compartments and an amino acid hydrochloride in the acid compartment. The acid and alkali solutions and a depleted salt solution are withdrawn from their respective compartments. A chelating agent may be added to the salt solution before it is fed into the electrodialysis cell.
Archer Daniels Midland Company
Shapiro Cohen
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