The device realizes that water is used as the membrane solution, and can continuously produce a dynamic liquid bubble membrane with separation characteristics for gas/vaport separation, and can produce high-purity oxygen and methane gas for high-pressure oxygen and clean energy production.
Here we demonstrate proof of concept on the design of a new type of liquid membrane so called "dynamic bubble membrane” (DBM) connected by Plateau borders (Plateau＇s laws). The DBM is composed of a network of bubbles, in which the bubble is created by surfactant and water-insoluble gas. To the best of our knowledge, this type of a bubble membrane has not been described in the previously literature due to lacking of a generation device.
The CO2 gas permeability of the dynamic bubble membrane is estimated as 1771.4 Barrer, and the separation factor for CO2/CH4 and CO2/O2 gas mixture were 24.4 and 19.8, respectively, that achieved the highest gas flux and near theoretical gas diffusion/solubility-selectivity of water. This innovative DBM generation device using water as membrane solution is highly attractive and promising for designing a green, low cost and highly efficient gas/vapor separation membrane technology. The DBM device can be applied for carbon capture, clean energy and high-pressure oxygen production.

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