| 초록 |
With an increase in demand for environmentally friendly material, the recovery of organic acids from dilute solutions resulting from fermentation processes has become of interest. Economics of the process, however, depends on the development of an effective recovery method for the organic acids from the broth. Solvent extraction processes as a promising recovery technique have been proposed as an alternative to the conventional precipitation process, and many solvents have been tried to improve such recovery. The purpose of this work is to determine LLE data of toluene + water + propionic acid + ethyl acetate and the LLE data for the quaternary system were measured at 25℃ under atmospheric pressure. The effect of the mixed solvents to separate propionic acid from aqueous solution was investigated. LLE data have also been predicted with the UNIFAC method, and they are compared with the experimental data at 25℃. |
