Extração no ponto nuvem de compostos orgânicos homólogos e isômeros

Abstract

In this work, the feasibility of employing micelle-mediated extraction for selective separation of homologous or isomeric organic compounds is demonstrated. Firstly, the main parameters controlling extraction performances, such as surfactant concentration and temperature were varied. A Scheffé-type experimental design was demonstrated as a novel and useful method to characterize the various experimental factors. At each point selected in the two-phase domain and for a given solute, extraction percentage (E%), concentration ratio, phase volume ratio, and equilibrium partition coefficient (KC) were determined. The values of E% and KC decrease in the following order: phenol > 1-phenylethanol ∼ 2-phenylethanol > benzyl alcohol.