3M™ Liqui-Cel™ MM Series Membrane Contactor

Lab-scale systems producing deionized (DI) water have limited space to incorporate degassing technology. The compact design of the Liqui-Cel MM series allows manufacturers of DI water systems to provide degassed DI water without taking up a lot of space inside the system. Products are available to handle flow rates from 5 ml/min to 3000 ml/min.

About 3M™ Liqui-Cel™ Membrane Contactors

3M™ Liqui-Cel™ Membrane Contactors provide efficient dissolved gas control in a compact design. Capable of adding gases to or removing dissolved gases from compatible liquid streams, these gas transfer devices utilize hollow fiber membrane technology that may help facilities around the world improve operating efficiency, performance and protect product quality.

The presence of dissolved gases, such as oxygen, carbon dioxide, nitrogen and other non-condensable gases can cause a number of difficulties. Process interruptions, yield loss, corrosion, surface defects, unreliable measurement readings, poor product quality, higher operating costs and equipment inefficiency are a few examples of challenges faced by various industries when dissolved gases and air bubbles are not consistently controlled.

The 3M™ Liqui-Cel™ Membrane Contactor product offering includes products made with various materials of construction and a wide-range of flow capacities to meet process and application requirements. Their modular nature makes them easy to incorporate into systems with lower weight and less space than other conventional technologies, such as vacuum towers or forced draft deaerators. 3M™ Liqui-Cel™ Membrane Contactors do not require chemicals in operation and can be an effective alternative to chemical treatment options, such as oxygen scavengers in boiler feedwater or caustic/acid in reverse osmosis (RO) and other deionization systems. This may be particularly advantageous for facilities that want to reduce on-site chemical use as part of their sustainability goals.

How 3M™ Liqui-Cel™ Membrane Contactors Membrane Contactors Work

3M™ Liqui-Cel™ Membrane Contactors utilize microporous or non-porous, semi permeable hollow fiber membrane that is placed inside a contactor housing. In our EXF, SP, and MM-0.5x1 and MM-0.75x1 series membrane contactors, liquid flows around the outside of the hollow fiber membrane while a vacuum and/or sweep gas is applied to the inside of the hollow fiber during operation. In our other MM series membrane contactors liquid and gas flows are opposite: liquid flows inside of the hollow fiber membrane while a vacuum and/or sweep gas is applied to the outside of the hollow fiber.

Applying a vacuum or sweep gas creates a difference in the gas concentration levels between the inside (lumenside) and outside (shellside) of the hollow fiber membrane. This concentration difference is what drives rapid and efficient dissolved gas transfer.