Artículo
Abstract:
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.
Registro:
| Documento: | Artículo |
| Título: | Tracer dispersion in double porosity porous media with nonlinear adsorption |
| Autor: | Drazer, G.; Chertcoff, R.; Bruno, L.; Rosen, M. |
| Filiación: | Grupo de Medios Porosos, Departamento de Fisica, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina |
| Palabras clave: | Adsorption; Dispersion; Double porosity; Porous media; Adsorption isotherms; Porosity; Porous materials; Tracer dispersion; Dispersions |
| Año: | 1998 |
| Volumen: | 257 |
| Número: | 1-4 |
| Página de inicio: | 371 |
| Página de fin: | 375 |
| DOI: | http://dx.doi.org/10.1016/S0378-4371(98)00161-7 |
| Título revista: | Physica A: Statistical Mechanics and its Applications |
| Título revista abreviado: | Phys A Stat Mech Appl |
| ISSN: | 03784371 |
| CODEN: | PHYAD |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03784371_v257_n1-4_p371_Drazer |
Referencias:
- Bouchaud, J.P., Georges, A., Anomalous diffusion in disordered media: Statistical mechanisms, models and physical applications (1990) Phys. Rep., 195, pp. 127-293
- Magnico, P., Leroy, C., Bouchaud, J.P., Gauthier, C., Hulin, J.P., Tracer dispersion in porous media with double porosity (1993) Phys. Fluids A, 5, pp. 46-57
- Bacri, J.C., Rakotomalala, N., Salin, D., Experimental evidence of disorder effects in hydrodynamic dispersion (1987) Phys. Rev. Lett., 58, pp. 2035-2038
- Hulin, J.P., Porous media: A model system for the physics of disorder (1994) Adv. Colloid Interface Sci., 49, pp. 47-84
- Taylor, G.I., Dispersion of solute matter in solvent flowing slowly through a tube (1953) Proc. R. Soc. London Ser. A, 219, pp. 186-203
- Drazer, G., Chertcoff, R., Bruno, L., Rosen, M., Concentration dependence of diffusion-adsorption rate in activated carbon (1998) Chem. Eng. Sci., , submitted
- Drazer, G., Chertcoff, R., Bruno, L., Rosen, M., Tracer dispersion in activated carbon double porosity media (1998) Chem. Eng. Sci., , submitted
Citas:
---------- APA ----------
Drazer, G., Chertcoff, R., Bruno, L. & Rosen, M. (1998) . Tracer dispersion in double porosity porous media with nonlinear adsorption. Physica A: Statistical Mechanics and its Applications, 257(1-4), 371-375.http://dx.doi.org/10.1016/S0378-4371(98)00161-7
---------- CHICAGO ----------
Drazer, G., Chertcoff, R., Bruno, L., Rosen, M. "Tracer dispersion in double porosity porous media with nonlinear adsorption" . Physica A: Statistical Mechanics and its Applications 257, no. 1-4 (1998) : 371-375.http://dx.doi.org/10.1016/S0378-4371(98)00161-7
---------- MLA ----------
Drazer, G., Chertcoff, R., Bruno, L., Rosen, M. "Tracer dispersion in double porosity porous media with nonlinear adsorption" . Physica A: Statistical Mechanics and its Applications, vol. 257, no. 1-4, 1998, pp. 371-375.http://dx.doi.org/10.1016/S0378-4371(98)00161-7
---------- VANCOUVER ----------
Drazer, G., Chertcoff, R., Bruno, L., Rosen, M. Tracer dispersion in double porosity porous media with nonlinear adsorption. Phys A Stat Mech Appl. 1998;257(1-4):371-375.http://dx.doi.org/10.1016/S0378-4371(98)00161-7
