(a) Use the data in Table 26.2 to estimate the membrane selectivity for N 2 /CH 4...

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(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.

Table 26.2 TABLE 26.2 Diffusion coefficients in selected polymers Polymer Polyethylene terephthalate Polyethylene

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Unit Operations Of Chemical Engineering

ISBN: 9780072848236

7th Edition

Authors: Warren McCabe, Julian Smith, Peter Harriott

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(a) Use the data in Table 26.2 to estimate the membrane selectivity for N 2 /CH 4...

Question:

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

Unit Operations Of Chemical Engineering

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