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Measurement of effective diffusivity from effluent concentration of a flow through diffusion cell
Author(s) -
Frost A. C.
Publication year - 1981
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690270515
Subject(s) - thermal diffusivity , diffusion , effluent , chemistry , volume (thermodynamics) , analytical chemistry (journal) , mass diffusivity , constant (computer programming) , flow (mathematics) , thermodynamics , chromatography , mechanics , environmental engineering , environmental science , physics , computer science , programming language
The overall effective diffusion coefficient for 3.3 mm extrudates of 5A Zeolite and CO 2 /N 2 at 292°K and 142 kN/m 2 was measured in a continually purged, well mixed, constant volume diffusion cell. The change of CO 2 concentration in the effluent stream resulting from a step change in the influent stream was used with appropriate parameters in the analytical solution to calculate diffusion coefficients for the 0 to 0.1 vol. % and 0.1 to 1.0 vol. % CO 2 concentration ranges.