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Recovery of L ‐lysine from dilute water solutions by liquid pertraction
Author(s) -
Boyadzhiev L.,
Atanassova I.
Publication year - 1991
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260380915
Subject(s) - chemistry , lysine , chromatography , liquid liquid , chemical engineering , biochemistry , amino acid , engineering
Kinetics of liquid membrane (Pertraction) recovery of L ‐lysine from dilute aqueous solutions is studied in a tow‐compartment glass cell. A 5% (vol) solution of the cation exchange carrier di(2‐ethylhexyl)phosphoric acid in n ‐decane was used as intermediate, membrane liquid. The third stripping phase was 1/v hydrochloric acid. The reaction mechanism and stoichiometry were defined, and on the basis of the proposed mathematical model of the process and the experimental data obtained, the mass transfer coefficients were evaluated. It was found that overall transfer rate is controlled by the eddy diffusion of transported species in the donor and membrane liquids. The results proved the feasibility of the pertraction process for recovery and concentration of L ‐lysine from its dilute aqueous solutions.