Dissolution of solid particles in liquids: A surface layer model
Journal
Colloids and Surfaces
Journal Volume
61
Journal Issue
C
Pages
35-47
Date Issued
1991
Author(s)
Abstract
The isothermal dissolution of monodispersed flat, cylindrical, and spherical solid particles in liquids is simulated kinetically. Here we assume that the diffusion of solute molecules through a surface layer near the solid-liquid interface is the rate determining step. An analytical expression for the temporal variation of the size of a particle is derived. The effect of the variation of the bulk liquid concentration due to the dissolution of particles in a batch apparatus has been taken into account; thus, the result obtained is applicable for both low solubility cases and for high solubility cases. The variation of the bulk liquid concentration can have a significant effect on the dissolution time of a particle. © 1991.
Type
journal article