Permeation of Permanent Gases through Liquid Membranes

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Abstract
The permeation of the permanent gases, He, O2, CO2, and N2, through liquid membranes was investigated by two experimental methods. The first procedure utilized the simultaneous counterdiffusion of two pure gases through an aqueous-surfactant bubble membrane according to the technique developed by Cook. In the second, the transfer rate of a single pure gas was measured by utilizing a spherical soap bubble. Comparison of the data obtained from the two different tests indicated that these gas-liquid systems behaved ideally. That is, there were no observed interactions for the binary mixtures which could not be predicted from the behavior of the pure components. Finally, nonaqueous, silicone oil membranes were investigated as potential separative barriers. These oil films yielded the same separation factors as previously reported for silicone rubber membranes used in the separation of binary gas mixtures.

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