Process of extraction of amino acids from aqueous solutions ther

Details Process of extraction of amino acids from aqueous solutions ther Process of extraction of amino acids from aqueous solutions ther

1988-08-04

1990-03-27

Schwartz, Richard A.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548497, 562443, 562445, 562559, 562560, 562562, 562570, 562571, 562573, 562575, 562576, C07D23364, C07C10122, C07C10108

Patent

active

049122282

ABSTRACT:
An improvement in the process of extraction of amino acids from aqueous solutions in which the amino acids are extracted with quaternary ammonium extractants. A pretreatment of the amino acid containing aqueous solution with a tertiary amine prior to extraction of the amino acids with the quaternary ammonium extractant, removes some impurities or poisons present therein, leaving the amino acids in the aqueous solution for subsequent extraction with a water insoluble quaternary ammonium extractant. After extraction with the quaternary extractant, the organic phase is stripped of amino acid and the stripped organic is subjected to an acidic scrub before returning to the quaternary extraction stage.

REFERENCES:
patent: 3966594 (1976-06-01), Ohkawa et al.
patent: 4275234 (1981-06-01), Baniel et al.
patent: 4584399 (1986-04-01), Portal et al.
patent: 4661606 (1987-04-01), Tuominen et al.

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