Volume 92, Number 6, December 2010
|Number of page(s)||6|
|Published online||21 January 2011|
Inversion of pore size dependence of solute transport kinetics from increasingly attractive ordered porous matrix
National Institute of Chemistry - Hajdrihova 19, 1000 Ljubljana, Slovenia, EU
Accepted: 30 November 2010
The problem of solute transport in interacting ordered porous media is addressed by numerically solving the 2D Fokker-Planck equation using 4-step operator splitting. The subtle interplay between drift and diffusion is shown to result in a nontrivial dependence of solute transport kinetics on pore size. Depending on the strength of attraction to pore walls distinct regimes of pore size dependence of transport kinetics are found. The results suggest a decoupling of local dynamics from large-scale transport.
PACS: 02.60.Lj – Ordinary and partial differential equations; boundary value problems / 05.60.Cd – Classical transport / 47.63.mh – Transport processes and drug delivery
© EPLA, 2010
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