Emulsion Prevention with Supported Liquid Membrane Permeation

Abstract

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 liquidliquid 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.

Reactive Extraction of Lactic Acid, Formic Acid and Acetic Acid from Aqueous Solutions with Tri-n-octylamine/1-Octanol/n-Undecane

“…However, in situ extraction of valuables from a fermentation broth is in general accompanied with third phaseor crud formation, which prevents the use of a conventional extraction process [17]. Therefore, supported liquid membrane permeation was shown to be effective for the purpose of emulsion prevention in highly emulsion tending systems and can help to overcome the drawback of emulsion/crud formation when bio-based process streams are targeted [18].…”

Membrane‐Supported Liquid‐Liquid Extraction – Where Do We Stand Today?

“…As long as there are no restrictions on the membrane materials used (e.g., chemical resistance, no extractable constituents, good cleanability, etc. ), the advantages of the membrane‐supported liquid‐liquid extraction are obvious and are therefore already at an advanced stage of development 13–21. Multi‐stage processes are also possible and have already been described 22.…”

Membrangestützte Flüssig/Flüssig‐Extraktion – Wo stehen wir heute?

“…B. chemische Beständigkeit, keine herauslösbaren Inhaltsstoffe, gute Reinigbarkeit etc. ), liegen die Vorteile der membrangestützten Flüssig/Flüssig‐Extraktion klar auf der Hand und sind folgerichtig dort schon in einem fortgeschrittenen Entwicklungsstadium . Mehrstufige Prozesse sind ebenfalls möglich und wurden auch bereits beschrieben .…”