Abstract
PESf hollow fiber membrane was used to recover sulfur hexafluoride (SF6) from N2/SF6 binary mixture gas. To fabricate a hollow fiber membrane, a dry-wet phase inversion method was used. Fiber was post-treated by methanol to increase permeance. Fabricated membrane was characterized by scanning electron microscopy (SEM) and N2, SF6 single gas permeation according to temperature and pressure difference. Using N2/SF6 binary mixture gas (10 vol% of SF6), we checked the separation of mixture gas in a manufactured single module according to temperature, pressure difference, and retentate flow rate. The highest SF6 purity in recovered gas was 50.4 vol% when the pressure difference, temperature, and stage cut was highest in experimental conditions, but the recovery ratio marked the lowest value.
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Kim, DH., Ko, YH., Kim, TH. et al. Separation of N2/SF6 binary mixtures using polyethersulfone (PESf) hollow fiber membrane. Korean J. Chem. Eng. 29, 1081–1085 (2012). https://doi.org/10.1007/s11814-011-0294-z
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DOI: https://doi.org/10.1007/s11814-011-0294-z