Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 297, Issue 1, Pages 353-364Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2005.10.026
Keywords
porous media; coupled transports; clay experimental
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The membrane potential, the pressure difference, and the concentration difference induced by an applied concentration gradient through samples of compact clay were measured as functions of sodium chloride concentration and of porosity. The results of some previous numerical predictions are recalled to be functions of a characteristic length scale which can be derived from conductivity and permeability. Generally, the experimental data were in agreement with these numerical predictions. Therefore, nondiagonal coupling coefficients can be derived with acceptable precision from the diagonal coefficients. (c) 2005 Elsevier Inc. All rights reserved.
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