Print: | ISSN 0256-1115 |
Online: | ISSN 1975-7220 |
Korean Journal of Chemical Engineering,
Vol.29, No.8, 1081-1085, 2012 Separation of N2/SF6 binary mixtures using polyethersulfone (PESf) hollow fiber membrane
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.
Keywords:
Polyethersulfone; Sulfur Hexafluoride; Greenhouse Gas; Mixture Gas Separation; Hollow Fiber Membrane
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