Recovery of L-lysine from dilute water solutions by liquid pertraction

✍ Scribed by L. Boyadzhiev; I. Atanassova

• Publisher: John Wiley and Sons
• Year: 1991
• Tongue: English
• Weight: 453 KB
• Volume: 38
• Category: Article
• ISSN: 0006-3592
• DOI: 10.1002/bit.260380915

✦ Synopsis

Kinetics of liquid membrane (pertraction) recovery of L-lysine from dilute aqueous solutions is studied in a twocompartment glass cell. A 5% (vol) solution of the cation exchange carrier di(2-ethy1hexyl)phosphoric acid in n-decane was used as intermediate, membrane liquid. The third stripping phase was IN 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.