| 초록 |
Amino acids and biochemicals have been important materials in many fields. These biochemicals are mainly produced by microbial fermentation processes. They are separated from the fermentation broth by complicated and costly ion exchange schemes due to low concentration and very low solubility in organic media. Such biochemicals are usually amphoteric. They exist both as anions and cations, depending upon the solution pH. Adsorption capacities of nonionic polymeric sorbents are less than that of an ion exchanger, the desorption step may be easier and faster than the case when one employs an ion exchanger. In this work, we investigated the fixed-bed adsorption for amino acids such as phenylalanine, tryptophan on nonionic polymeric sorbent in terms of concentration, flow rate and bed length and characteristic of desorption.
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