Interfacial mass transfer in stripping of phenylalanine in a liquid‐liquid extraction process

Abstract Stripping of L‐phenylalanine from organic phase containing ALIQUAT 336 (tri‐octyl‐methyl‐ammonium chloride) as complexing agent was studied using a stirred transfer cell. The study investigated the effects of concentration of the stripping agent, potassium chloride, in strip solution and temperature on mass transfer rates. A two‐film model based on organic and aqueous phases mass transfer resistances was proposed to estimate mass transfer coefficients and it predicted adequately the experimental time‐concentration data at different conditions studied. A comparison of mass transfer coefficients for stripping and previously published results on extraction for the same system was made.