Premium
Diffusion of Cu 2+ in calcium alginate gel beads: Further analyses
Author(s) -
Chaiken Robert F.
Publication year - 1995
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260450511
Subject(s) - diffusion , thermal diffusivity , chemistry , absorption (acoustics) , thermodynamics , desorption , calcium alginate , mass transfer , calcium , analytical chemistry (journal) , chromatography , materials science , organic chemistry , physics , adsorption , composite material
The diffusivity of Cu 2+ , as determined by previous authors from analysis of experimental data in terms of the shrinking core (SCM) and linear absorption (LAM) models, is examined in light of the ability of the models to curve fit all the data. It is concluded from this further analysis that previous conclusions depicting the LAM to have an advantage over the SCM for predictive value are not justified. It is also shown that equally good curve fits can be obtained with a recent absorption/desorption model of diffusion which considers directly, through distribution theory, the effect of heterogeneity of material properties on the rate of diffusion. © 1995 John Wiley & Sons, Inc.