| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 612794 | Journal of Colloid and Interface Science | 2006 | 5 Pages |
Various analytical expressions for solute adsorption kinetics within porous absorbents of defined geometry (planar sheet, cylinder, and sphere) are available in the literature. However, these expressions are limited for practical numerical evaluation because they are based on infinite series. An investigation of these expressions has been carried out and then accurate but simple expressions derived that enable rapid determination of effective diffusion coefficients for adsorption within geometrically categorical absorbents. These involve directly fitting calculated kinetic adsorption curves to experimental ones. A simple one point method is also proposed to estimate the effective diffusion coefficient for an adsorption process within these simple geometrical absorbents as an initial value for a best fit.
Graphical abstractExpressions for solute adsorption kinetics within absorbents of defined geometries (planar sheet, cylinder, and sphere) are derived, and enable determination of effective diffusion coefficients by directly fitting calculated kinetic adsorption curves to experimental ones.Figure optionsDownload full-size imageDownload high-quality image (60 K)Download as PowerPoint slide
