TWO-COMPARTMENT BIPOLAR MEMBRANE ELECTRODIALYSIS OF SALTS OF AMINO ACIDS
This disclosure relates to an improved electrodialysis method for preparing an amino acid (e.g., iminodiacetic acid) from a salt of the amino acid (e.g., disodium iminodiacetic acid) utilizing a two-compartment bipolar membrane electrodialysis process wherein at least a portion of the salt product s...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | This disclosure relates to an improved electrodialysis method for preparing an amino acid (e.g., iminodiacetic acid) from a salt of the amino acid (e.g., disodium iminodiacetic acid) utilizing a two-compartment bipolar membrane electrodialysis process wherein at least a portion of the salt product stream comprising the amino acid and one or more salt thereof is recirculated to the two-compartment bipolar membrane. The process also comprises removing at least a portion of the recirculation stream and phosphonomethylating the amino acid therein. The process further comprises recovering a base product stream and utilizing the base product stream for preparing the salt of the amino acid. |
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