Answers to Selected Odd-Numbered Exercises in
“Separation Process Principles” by
J. D. Seader and Ernest J. Henley Chapter 15
15.3 (a) Yes (b) 97%
15.9 (a) Using linear regression with Excel on the linearized equations: Propane:
Freundlich equation:
q 0 01062. p0 7626.
Langmuir equation:
q p
p
0 00185 2 52 1 0 00185 . ( . )
. Propylene:
Freundlich equation:
q 0 06242. p0.5463
Langmuir equation:
q p
p
0 00392 2 82
1 0 00392
. ( . )
.
None of the fits are entirely satisfactory. Propylene is more strongly adsorbed. 15.17 Mass-transfer coefficient = 0.039 m/s
Heat-transfer coefficient = 280 J/s-m2-K
15.19 Effective diffusivity = 0.0054 cm2/s
Knudsen diffusion is very important. 15.21 (a) 8.9 g carbon/L solution
(b) 107 minutes (c) 7253 h
