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Title: Nonisothermal pore diffusion model for a kinetically controlled pressure swing adsorption process
Authors: Khalighi, M.
Farooq, S. 
Karimi, I.A. 
Issue Date: 15-Aug-2012
Citation: Khalighi, M., Farooq, S., Karimi, I.A. (2012-08-15). Nonisothermal pore diffusion model for a kinetically controlled pressure swing adsorption process. Industrial and Engineering Chemistry Research 51 (32) : 10659-10670. ScholarBank@NUS Repository.
Abstract: A nonisothermal micropore diffusion model has been developed to simulate kinetically controlled pressure swing adsorption (PSA) processes. In this model, a dual-site Langmuir isotherm represents adsorption equilibrium and micropore diffusivity depends on adsorbate concentration in the solid phase according to the chemical potential gradient as the driving force for diffusion. The model has been validated with published experimental data for the kinetically controlled separation of propylene/propane on 4A zeolite. Its performance has also been extensively compared with that of a bilinear driving force (bi-LDF) model for the same system. The results clearly show that a nonisothermal micropore diffusion model with concentration-dependent diffusivity is comprehensive and complete for kinetically selective systems. The conditions under which the bi-LDF model predictions may significantly deviate from those of the pore diffusion model have also been discussed. © 2012 American Chemical Society.
Source Title: Industrial and Engineering Chemistry Research
ISSN: 08885885
DOI: 10.1021/ie3004539
Appears in Collections:Staff Publications

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