Diffuse Double‐Layer Eqautions in SI Units
Publication: Journal of Geotechnical Engineering
Volume 118, Issue 12
Abstract
Clay particles are usually treated as lyophobic colloids and, thus, colloid chemistry provides a means for description of interactions in a clay-water-electrolyte system. The Stern-Gouy-Chapman theory of diffuse double layer has been applied to the behavior of clays with varying degrees of success. In most textbooks, the equations describing the diffuse double layer are given in electrostatic units. However, it is very confusing for researchers of different disciplines to communicate this way, as the existing equations are not even in compliance with the counterparts in electrical engineering. Moreover, it complicates double-layer computations when coupled flows are involved, i.e., one type of flow is induced by another type of force. These problems become apparent as the amount of research in hazardous waste management and site remediation grows. Hence, it is worthwhile to redevelop these equations using the SI system to eliminate these ambiguities and a redundant conversion factor. Moreover, it is shown that the SI equations can be obtained very conveniently by replacing the dielectric constant term in esu equations by the product of 4π and the permittivity of the medium.
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References
1.
Acar, Y. B., Hamidon, A., Field, S. D., and Scott, L. (1985). “The effect of organic fluids on hydraulic conductivity of compacted kaolinite.” Hydraulic Barriers in Soil and Rock, ASTM STP 874, ASTM, Philadelphia, Pa., 171–187.
2.
Alther, G., Evans, J. C., Fang, H.‐Y., and Witmer, K. (1985). “Influence of inorganic permeants upon the permeability of bentonite.” Hydraulic Barriers in Soil and Rock, ASTM STP 874, ASTM, Philadelphia, Pa., 64–73.
3.
Bolt, G. H. (1955). “Analysis of the validity of the Gouy‐Chapman theory of the electric double layer.” J. Colloid Sci., 10(2), 206–218.
4.
Chapman, L. (1913). “A contribution to the theory of electrocapillarity.” Philosophical Magazine, Ser. 6, 25(148), 475–481.
5.
Gouy, G. (1910). “Sur la constitution de la charge électrique á la surface d'un électrolyte.” Journal de Physique Théorique et Appliquée, Ser. 4, 9, 457–468 (in French).
6.
Hamed, J., Acar, Y. B., and Gale, R. J. (1991). “Pb(II) removal from kaolinite by electrokinetics.” J. Geotech. Engrg., ASCE, 117(2), 241–271.
7.
Hunter, R. J. (1981). Zeta potential in colloid science. Academic Press, New York, N.Y.
8.
Mills, I., Cvitač, T., Homann, K., Kallay, N., and Kuchitsu, K. (1988). Quantities, unit and symbols in physical chemistry. Blackwell Scientific Publications, Oxford, England.
9.
Mitchell, J. K. (1976). Fundamentals of soil behavior. John Wiley & Sons, New York, N.Y.
10.
Mitchell, J. K., and Madsen, F. T. (1987). “Chemical effects on clay hydraulic conductivity.” Geotech. Practice for Waste Disposal 1987: Geotech. Special Publ. 13, ASCE, New York, N.Y. 87–116.
11.
Mitchell, J. K., and Yeung, A. T. (1991). “Electro‐osmotic flow barriers in compacted clay.” Geotechnical Engineering 1990; Transp. Res. Record 1288, Transp. Res. Board, Washington, D.C., 1–9.
12.
Sposito, G. (1984). The surface chemistry of soils. Oxford University Press, New York, N.Y.
13.
Sridharan, A., and Jayadeva, M. S. (1982). “Double layer theory and compressibility of clays.” Géotechnique, London, England, 32(2), 133–144.
14.
van Olphen, H. (1977). An introduction to clay colloid chemistry, 2nd ed., John Wiley & Sons, New York, N.Y.
15.
Verwey, E. J. W., and Overbeek, J. T. (1948). Theory of the stability of lyophobic colloids. Elsevier, Amsterdam, The Netherlands.
16.
Yeung, A. T. (1990). “Electro‐kinetic barrier to contaminant transport through compacted clay,” PhD dissertation, Univ. of California, at Berkeley.
Information & Authors
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Published In
Journal of Geotechnical Engineering
Volume 118 • Issue 12 • December 1992
Pages: 2000 - 2005
Copyright
Copyright © 1992 ASCE.
History
Published online: Dec 1, 1992
Published in print: Dec 1992
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