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Issue 30, 2015
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Unexpected coupling between flow and adsorption in porous media

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Abstract

We study the interplay between transport and adsorption in porous systems under a fluid flow, based on a lattice Boltzmann scheme extended to account for adsorption. We performed simulations on well-controlled geometries with slit and grooved pores, investigating the influence of adsorption and flow on dispersion coefficient and adsorbed density. In particular, we present a counterintuitive effect where fluid flow induces heterogeneity in the adsorbate, displacing the adsorption equilibrium towards downstream adsorption sites in grooves. We also present an improvement of the adsorption-extended lattice Boltzmann scheme by introducing the possibility for saturating Langmuir-like adsorption, while earlier work focused on linear adsorption phenomena. We then highlight the impact of this change in situations of high concentration of adsorbate.

Graphical abstract: Unexpected coupling between flow and adsorption in porous media

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Publication details

The article was received on 01 Jun 2015, accepted on 25 Jun 2015 and first published on 29 Jun 2015


Article type: Paper
DOI: 10.1039/C5SM01348H
Author version available: Download Author version (PDF)
Citation: Soft Matter, 2015,11, 6125-6133
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    Unexpected coupling between flow and adsorption in porous media

    J. Vanson, F. Coudert, B. Rotenberg, M. Levesque, C. Tardivat, M. Klotz and A. Boutin, Soft Matter, 2015, 11, 6125
    DOI: 10.1039/C5SM01348H

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