What is the membrane selectivity

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Reference no: EM131057446

Laboratory tests of a membrane for H2 /CH4 separation gave a permeate composition of 80 percent H, and a residue of 42 percent H, when the feed had 50 percent H2 and the feed and permeate absolute pressures were 100 and 151bf /in.2 . The permeate flow was 20 percent of the feed flow.

(a) What is the membrane selectivity?

(b) About what permeate composition would have been obtained if a vacuum had been used on the downstream side?

Reference no: EM131057446

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