Title:
ELECTROLYZING METHOD FOR ALKALINE METALLIC SALT OF AMINO ACID
Document Type and Number:
Japanese Patent JPS61261488
Kind Code:
A
Abstract:
PURPOSE:To obtain a free amino acid at a good yield with less electric power consumption by using a cation exchange membrane as a diaphragm, adding the alkaline metallic salt of a neutral amino acid into an anolyte having positive pH and electrolyzing the same with an aq. alkaline metallic hydroxide as a catholyte. CONSTITUTION:An electrolytic cell is constituted by providing a sheet of the cation exchange membrane 3 as the diaphragm between the anode 1 and the cathode 2. The stock soln. F consisting of the alkaline metallic salt of the neutral amino acid having each one amino group and carboxyl group is added to the anolyte A circulated and passed in an anode chamber 4 of the above-mentioned cell and the pH of the above-mentioned anolyte A is maintained at <=9.5, more preferably <=9.0. On the other hand, the catholyte C consisting of the aq. soln. of the alkaline metallic hydroxide is passed through the chamber 5. Electric current is then passed between both electrodes 1 and 2 to form the free amino acid in the anolyte A, the alkaline metallic hydroxide is obtd. in the catholyte C. The amino acid and the alkaline metallic hydroxide are respectively recovered as an ion exchange liquid E and recovered alkali R by gas-liquid separators 6, 7.
Inventors:
KISHIDA KONOSUKE
TANABE TAKATOSHI
TANABE TAKATOSHI
Application Number:
JP10156785A
Publication Date:
November 19, 1986
Filing Date:
May 15, 1985
Export Citation:
Assignee:
MUSASHINO KAGAKU KENKYUSHO
International Classes:
C25B1/16; C25B3/23; (IPC1-7): C25B3/02
Attorney, Agent or Firm:
Heikichi Odashima
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