Membrane extraction is a membrane-based separation technique that selectively transfers specific components, such as gases or solutes, from one fluid phase to another. This process relies on diffusion of the desired components from one liquid to the second. A key element in our know-how is the design of a process with maximalised diffusion rates.

Membrane contactors facilitate these membrane extraction processes. They allow contact of a liquid that penetrates the membrane with a second – non-penetrating- liquid without the two mixing. This intimate contact allows for selective mass transfer, enabling the extraction or separation of specific components.

Membrane contactors are utilized in various industries, including pharmaceuticals, fragrances, chemical processing, and environmental engineering.

Membrane contactors are also used for controlled gassing and degassing of liquid phases (e.g. of controlled gassing of bioreactors, degassing when the presence of oxygen or other gasses is decremental to product quality – e.g. when dealcoholizing beer).

The main benefit of membrane extraction is the prevention of emulsification of the two involved liquids. There is no need for long relaxation times. Furthermore, membrane extraction offers more freedom when choosing the appropriate extractant than with classical extraction techniques. In essence, membrane contactors offer a combination of selectivity, efficiency, and versatility, making them valuable tools in separation processes across different industries.

A-membranes offers membrane contactors based on different membrane technologies and chemistries. We offer small lab scale contactors, mid-scale contactors for piloting and large scale for industrial applications. Our company also offers complete turn-key installations for membrane extraction or membrane (de)gassing.