Tracer dispersion in double porosity porous media with nonlinear adsorption

Tracer dispersion measurements in double porosity porous media with a nonlinear adsorption isotherm are reported. Thanks to a radioactive tagging technique we obtained transit time distributions at different cross-sections along the porous medium. This tagging technique allows us to work in a linear...

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Autores principales:	Drazer, G., Chertcoff, R., Bruno, L., Rosen, M.
Formato:	JOUR
Materias:	Adsorption Dispersion Double porosity Porous media Adsorption isotherms Porosity Porous materials Tracer dispersion Dispersions
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_03784371_v257_n1-4_p371_Drazer
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_03784371_v257_n1-4_p371_Drazer
record_format	dspace
spelling	todo:paper_03784371_v257_n1-4_p371_Drazer2023-10-03T15:32:31Z Tracer dispersion in double porosity porous media with nonlinear adsorption Drazer, G. Chertcoff, R. Bruno, L. Rosen, M. Adsorption Dispersion Double porosity Porous media Adsorption isotherms Porosity Porous materials Tracer dispersion Dispersions Tracer dispersion measurements in double porosity porous media with a nonlinear adsorption isotherm are reported. Thanks to a radioactive tagging technique we obtained transit time distributions at different cross-sections along the porous medium. This tagging technique allows us to work in a linear adsorption regime where classical dispersion results are used. The basic dispersion mechanisms are related to physicochemical and geometrical properties of the porous medium. We obtained satisfactory comparison of these theoretical results with experimental values. We conclude that useful information about microscopic length and time scales may be obtained from the mean tracer velocity dependence of the longitudinal dispersion coefficient. Finally, we show how the total solute concentration, due to the nonlinear adsorption isotherm, weights the trapping effects. © 1998 Elsevier Science B.V. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03784371_v257_n1-4_p371_Drazer
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Adsorption Dispersion Double porosity Porous media Adsorption isotherms Porosity Porous materials Tracer dispersion Dispersions
spellingShingle	Adsorption Dispersion Double porosity Porous media Adsorption isotherms Porosity Porous materials Tracer dispersion Dispersions Drazer, G. Chertcoff, R. Bruno, L. Rosen, M. Tracer dispersion in double porosity porous media with nonlinear adsorption
topic_facet	Adsorption Dispersion Double porosity Porous media Adsorption isotherms Porosity Porous materials Tracer dispersion Dispersions
description	Tracer dispersion measurements in double porosity porous media with a nonlinear adsorption isotherm are reported. Thanks to a radioactive tagging technique we obtained transit time distributions at different cross-sections along the porous medium. This tagging technique allows us to work in a linear adsorption regime where classical dispersion results are used. The basic dispersion mechanisms are related to physicochemical and geometrical properties of the porous medium. We obtained satisfactory comparison of these theoretical results with experimental values. We conclude that useful information about microscopic length and time scales may be obtained from the mean tracer velocity dependence of the longitudinal dispersion coefficient. Finally, we show how the total solute concentration, due to the nonlinear adsorption isotherm, weights the trapping effects. © 1998 Elsevier Science B.V. All rights reserved.
format	JOUR
author	Drazer, G. Chertcoff, R. Bruno, L. Rosen, M.
author_facet	Drazer, G. Chertcoff, R. Bruno, L. Rosen, M.
author_sort	Drazer, G.
title	Tracer dispersion in double porosity porous media with nonlinear adsorption
title_short	Tracer dispersion in double porosity porous media with nonlinear adsorption
title_full	Tracer dispersion in double porosity porous media with nonlinear adsorption
title_fullStr	Tracer dispersion in double porosity porous media with nonlinear adsorption
title_full_unstemmed	Tracer dispersion in double porosity porous media with nonlinear adsorption
title_sort	tracer dispersion in double porosity porous media with nonlinear adsorption
url	http://hdl.handle.net/20.500.12110/paper_03784371_v257_n1-4_p371_Drazer
work_keys_str_mv	AT drazerg tracerdispersionindoubleporosityporousmediawithnonlinearadsorption AT chertcoffr tracerdispersionindoubleporosityporousmediawithnonlinearadsorption AT brunol tracerdispersionindoubleporosityporousmediawithnonlinearadsorption AT rosenm tracerdispersionindoubleporosityporousmediawithnonlinearadsorption
_version_	1782024884974518272

Tracer dispersion in double porosity porous media with nonlinear adsorption

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