Artículos de revistas
Capillary Pressure Determination From Sorption Isotherms For Mixtures Of Porous Solids
Registro en:
Drying Technology. , v. 23, n. 9-11, p. 1841 - 1857, 2005.
7373937
10.1080/07373930500210028
2-s2.0-27144515495
Autor
Miranda M.N.N.
Silva M.A.
Institución
Resumen
Capillary pressure and relative permeability are important parameters for characterization of the draining of fluid phases in porous media. In this work, capillary pressure and relative permeability were evaluated in porous solids with distinct morphological properties, namely NaY zeolite, kaolin, and alumina as well as their binary mixtures in the compositions of 20, 40, 60, and 80% in mass fraction. The objective of the present work was to verify the influence of the composition of the solid mixture and the structural characteristics of the components on capillary pressure and relative permeability. Capillary pressure as a function of saturation of the material was determined from moisture desorption isotherms. The results showed that structural characteristics greatly influence capillary pressure and permeability. The obtained capillary pressure in microporous materials was higher than that in macroporous and mesoporosous materials at the same saturation. It was verified that when microporous materials were present in the mixture, the capillary pressure of the binary mixtures tended to approach the capillary pressure of the microporous materials, since micropores control the adsorption and desorption processes. Copyright © 2005 Taylor & Francis, Inc. 23 9-11 1841 1857 Silva, M.A., Miranda, M.N.N., Estimation of properties of ternary mixtures of solids using the mixing rule (2003) Powder Technology, 134, pp. 16-23 Silva, M.A., Sousa, F.V., Drying behavior of binary mixture of solids (2004) Drying Technology, 22 (1-2), pp. 165-177 Silva, M.A., Kerkhof, P.J.A.M., Coumans, W.J., Estimation of effective diffusivity in drying of heterogeneous porous media (2000) Industrial & Engineering Chemistry Research, 39 (5), pp. 1443-1452 Szentgyorgyi, S., Some theoretical aspects of drying of solids (1987) Advances in Drying, 4, pp. 147-198. , Mujumdar, S.A., Ed. Hemisphere: Washington, DC Li, K., Horne, R.N., Steam-water capillary pressure in geothermal systems (2000) Proceedings of the 25th Workshop on Geothermal Reservoir Engineering, pp. 1-8. , Stanford, California, January 24-26 Slade, G.W., Capillary pressure: Some static and dynamic views in semi-ordered media and their applicability to wood drying (1998) Drying Technology, 16 (1-2), pp. 1-13 Nowicki, S.C., Davis, H.T., Scriven, L.E., Microscopic determination of transport parameters in drying porous-media (1992) Drying Technology, 10 (4), pp. 925-946 van der Zanden, A.J.J., Coumans, W.J., Kerkhof, P.J.A.M., Schoenmakers, A.M.E., Isothermal moisture transport in partially saturated porous media (1996) Drying Technology, 14 (7-8), pp. 1525-1542 Schönherr, M., Mocikat, H., Capillary porous-media - Internal heat and mass transport (1991) Drying Technology, 9 (1), pp. 139-158 Shishido, I., Suzuki, M., Ohtani, S., On the drying mechanism of shrinkage materials (1992) Drying Technology, 10 (3), pp. 563-589 Sarmento, A.L.S.C., Couture, F., Laurent, S., Roques, M.A., Modeling of heat and mass transport in two-phase media by considering liquid pressure (2004) Drying Technology, 22 (1-2), pp. 81-90 Dullien, F.A.L., (1992) Porous Media: Fluid Transport and Pore Structure, pp. 118-231. , 2nd ed Academic Press: London Li, K., Horne, R.N., Steam-water relative permeability by the capillary pressure method (2001) International Symposium of the Society of Core Analysts, pp. 1-12. , Edinburgh, UK, September 17-19 Yang, R.T., (1997) Gas Separation By Adsorption Processes, pp. 9-39. , Imperial College Press: London Miranda, M.N.N., Structure Properties of Ternary Mixtures of Solids (2002), p. 118. , M.Sc. Dissertation, State University of Campinas, BrazilCouture, F., Jomaa, W., Puigalli, J.R., Drying behavior as influenced by the relative permeability relations (1994) Proceedings of the 9th International Drying Symposium, pp. 263-276. , Gold Coast, Australia, August 1-4 van der Sanden, S.C.T., Coumans, W.J., Kerkhof, P.J.A.M., Desorption isotherms and diffusion coefficients of catalytic materials (1998) Proceedings of the 11th International Drying Symposium (IDS'98), pp. 762-769. , Halkidiki, Greece, August 19-22 Helmig, R., (1997) Multiphase Flow and Transport Processes in the Subsurface: A Contribution to the Modeling of Hydrosystems, pp. 23-82. , Springer: Berlin Ferrand, L.A., The effect of heterogeneity on the drainage capillary pressure-saturation relation (1992) Water Resources Research, 28 (3), pp. 859-870