Mathematical modeling of p-aminobenzoic acid reactive extraction without and with phase modifier

摘要

Using the statistical analysis and factorial experiments of second order, two mathematical correlations for the reactive extraction of PABA with Amberlite LA-2 dissolved in n-heptane have been established for systems without and with I-octanol. These equations describe the dependences between the extraction yield and the main parameters influencing the separation efficiency (pH of aqueous phase, extractant concentration and extraction duration). For both cases, the considered variables control the separation process in a 94.6-99.2% extent, the sense and the magnitude of variables influences depending on the alcohol presence.