Process for the separation of amino acids from aqueous solutions
AssigneeDegussa AG
InventorsSems Yonsel, Wiltrud Schafer-Treffenfeldt, Akos Kiss, Elfriede Sextl, Heike Kinz
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Abstract
A process for the separation of amino acids from aqueous solutions by adsorption on zeolites of different types. It is unnecessary to separate the biomass prior to the treatment.
Claims8
A process for the separation of amino acids from aqueous solutions which comprises adjusting the pH value of a solution of an amino acid, the pH being adjusted to a pH value of .gtoreq.pI, where pI is the isoelectric point, in the case of basic amino acids (isoelectric point pI>pH 7), and the pH being adjusted to pH.ltoreq.pI in the case of neutral amino acids (pI between 5 and 7) and acidic amino acids (pI<5), then contacting the said solution with a zeolite, and eluting the amino acid adsorbed on the zeolite at a pH value of pH</pI in the case of basic amino acids and pH>pI in the case of neutral and acidic amino acids.
Dependencies are inferred from the claim text.