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Approximations for Intraparticle Mass Diffusion/Convection Models: A Review
Author(s) -
Mendes A. M. M.,
Pinto L. M. G.,
Costa C. A. V.
Publication year - 1996
Publication title -
developments in chemical engineering and mineral processing
Language(s) - English
Resource type - Journals
eISSN - 1932-2143
pISSN - 0969-1855
DOI - 10.1002/apj.5500040301
Subject(s) - mass transfer , diffusion , binary number , particle (ecology) , convection , langmuir , adsorption , statistical physics , thermodynamics , mechanics , chemistry , physics , mathematics , geology , oceanography , arithmetic
This paper presents a review of linear driving force and more complex approximations developed since 1947 to simplify the intraparticle diffusion/convection mass transfer models. The results for step and cyclic particle‐surface perturbations are shown, and the methodolagies used by various authors are illustrated. The presence of linar or non‐linear adsorption or chemical reaction is also considered. recent Approximations for cyclic perturbations of binary Langmuir systems with complex intraparticle models (e. g. dusty gas model) are also presented. Finally, future developments both in approximations and methodologies are discussed.