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Titre :
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The effect of solute size on diffusive-dispersive transport in porous media
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Titre original:
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Influence de la dimension des solutés sur les phénomènes de diffusion-dispersion en milieu poreux
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Auteurs :
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Q. Hu ;
M. Brusseau
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Type de document :
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article/chapitre/communication
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Année de publication :
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1994
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Format :
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305-317
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Langues:
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= Anglais
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Catégories :
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QUALITE DE L'EAU
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Mots-clés:
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HYDRODYNAMIQUE
;
MILIEU POREUX
;
DISPERSION
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Résumé :
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The purpose of this work was to investigate the effect of solute diffusive-dispersive transport in porous media. Miscible displacement experiments were performed with tracers of various sizes : tritiated water, pentafluorobenzoate (PFBA), and 2,4-dichlorophenoxyacetic acid (2,4-D) and a homogeneous nonreactive sand for pore-water velocities varying by three orders of magnitude. Hydrodynamic dispersion is the predominant source of dispersion for higher pore-water velocities and dispersivity is, therefore, essentially independent of solute size.
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Source :
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Journal of hydrology, vol.158
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