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Article Dans Une Revue Physical Review E Année : 2021

Lattice Boltzmann method for adsorption under stationary and transient conditions: Interplay between transport and adsorption kinetics in porous media

Résumé

A numerical method based on the Lattice Boltzmann formalism is presented to capture the effect of adsorption kinetics on transport in porous media. Through the use of a general adsorption operator, canonical models such as Henry and Langmuir adsorption as well as more complex adsorption mechanisms involving collective behavior with lateral interactions and surface aggregation can be investigated using this versatile model. By extending the description of adsorption phenomena to kinetic regimes with any underlying adsorption model, this effective technique allows assessing the coupled dynamics resulting from advection/diffusion/adsorption in pores not only in stationary conditions but also under transient conditions (i.e. in regimes where the adsorbed amount evolves with time due to diffusion and advection). As illustrated in this paper, the development of such an approach provides a simple tool to determine the reciprocal effect of molecular flow/dispersion on adsorption kinetics. In this context, the use of a Lattice Boltzmann-based approach is important as it allows considering porous media of any morphology and topology. Beyond fundamental implications, this efficient method allows treating real engineering conditions such as pollutant dispersion or surfactant injection in a flowing liquid in soils/porous rocks.

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Dates et versions

hal-03329850 , version 1 (31-08-2021)

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Zaineb Zaafouri, Guillaume Batôt, Carlos Nieto-Draghi, Benjamin Rotenberg, Daniela Bauer, et al.. Lattice Boltzmann method for adsorption under stationary and transient conditions: Interplay between transport and adsorption kinetics in porous media. Physical Review E , 2021, 104 (1), pp.015314. ⟨10.1103/PhysRevE.104.015314⟩. ⟨hal-03329850⟩
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