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Coupling Phenomena in Saturated Homo‐ionic Montmorillonite: III. Analysis
Author(s) -
Groenevelt P. H.,
Elrick D. E.,
Blom T. J. M.
Publication year - 1978
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1978.03615995004200050001x
Subject(s) - electrode , ion , flux (metallurgy) , series (stratigraphy) , coupling (piping) , salt (chemistry) , montmorillonite , chemistry , ionic bonding , materials science , thermodynamics , analytical chemistry (journal) , mechanics , physics , composite material , geology , chromatography , paleontology , organic chemistry
The data presented in the first paper of this series are analyzed using the theoretical transport equations and the analytical expressions for the transport coefficients developed in the second paper of the series. When the electrodes of the system presented in Part 1 of this series are not shorted the predicted behavior corresponds precisely with the actual behavior. Upon shorting the electrodes, the data indicate that the actual shorting of the clay‐water system is not perfect, an indication that the electrodes cannot release and absorb Cl ‐ ions infinitely fast. From the data the shorting efficiency is calculated. The flux of cations through the clay‐water system while the electrodes are shorted can then be calculated. The absolute value of this flux appears to be slightly larger than the value calculated from the decrease in time of the salt concentration difference in the two liquid compartments. This is likely due to the buildup of a salt concentration gradient in the membranes.