Influence of different resins on the amino acid recovery by resin-filling electrodialysis

摘要: Compared to the concentration and separation of inorganic salts, recovery amino acids by electrodialysis (ED) is normally more difficult due their weak dissociation ability, relatively complex structure zwitterionic properties. In this work, three kinds resins, inert resin, 001 x 4 resin (strongly acidic) 201 basic), were added in diluted compartments membrane stack facilitate transport acids. The effect property quantity resin-filling on ED behavior glutamate (acidic) lysine (basic) was investigated respectively. It found that promotion different resins order: > >= resin. For when percentage filling reached 25% or 50%, improvement most significant. This attributed influence hydraulic conditions compartments. As for ion exchange higher produced obvious positive migration as compared which caused superior conductive catalytic ability functional groups. (C) 2015 Elsevier B.V. All rights reserved.