(a) Use the data in Table 26.2 to estimate the membrane selectivity for N 2 /CH 4...
Question:
(a) Use the data in Table 26.2 to estimate the membrane selectivity for N2/CH4 based on the average driving force.
(b) Explain why the same method cannot be used to estimate the H2/CH4 selectivity.
(c) How could the H/CH, selectivity be determined from these data?
Table 26.2
Transcribed Image Text:
TABLE 26.2 Diffusion coefficients in selected polymers Polymer Polyethylene terephthalate Polyethylene (p=0.964 g/cm³) 0.914 g/cm) Polyethylene (p= Natural rubber 0₂ 3.6 170 460 1.580 Dx 10' at 25°C, cm²/s N₂ CO₂ 93 320 1.110 0.54 124 372 1,110 CH₂ 0.17 57 193 890
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To estimate the membrane selectivity for N2CH4 based on the average driving force you can use the following formula Selectivity D1D2 sqrtM2M1 Where D1 ...View the full answer
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Related Book For
Unit Operations Of Chemical Engineering
ISBN: 9780072848236
7th Edition
Authors: Warren McCabe, Julian Smith, Peter Harriott
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