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CO2 Removal using Membranes

Preferred: CO2 Removal by GTM Gas Transfer Membranes like 3M’s Liqui-Cel™

Water, even pure water, contains dissolved CO2 gas and the ionic bicarbonate form HCO3-. Dissolved CO2 gas can be removed using GTM membranes; this is a closed clean system. Ionic HCO3- can be removed using RO if the pH is right. Understanding the pH of the RO feed, the RO permeate, and how this affects choice of CO2-removal strategy is important.


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3M Liqui-Cel Membrane Contactors are used for degasing liquids around the world. They are widely used for CO2 removal from water. GTM is a clean technology that has displaced the vacuum tower and open air forced draft deaerator over the past 20 years.

3M Liqui-Cel Membrane is used extensively for deaeration of liquids in power generation, microelectronics, pharmaceutical, and industrial markets just to name a few.