The urge to achieve climate protection goals and a more prevalent interest in finding alternatives to fossil fuel-based products focus attention increasingly on cascade raw material utilization, respectively, to intensify commercial production processes. The present project provides a study on the combination of liquid-liquid extraction and esterification using the system acetic acid/octanol and 4-dodecylbenzenesulfonic acid as catalyst. The surfactant 4-dodecylbenzenesulfonic acid causes emulsification during extraction, but emulsification was successfully avoided by using supported liquid membrane permeation equipment.