FIELD: chemistry.
SUBSTANCE: invention relates to a method of purifying amino acids, in particular, from mineral components contained in flushing water for microbiological production. Method for demineralisation by neutralisation dialysis of mixed solution of amino acid and salt involves feeding solution of mixture into middle section of a three-section dialysis unit, defined by cation-exchange and anion-exchange membranes with geometrically irregular shaped surface, feeding acid solution in counter-flow mode through section adjacent to cation-exchange membrane, and through section adjacent to anion-exchange membrane – alkali solution.
EFFECT: higher efficiency of separation solution of mixture phenyl alanine and sodium chloride.
1 cl, 3 dwg
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