Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Concentration Gradients in Aquifers, Phase II.
Author Kem, Marwin K. ;
CORP Author Tulsa Univ., Okla.
Year Published 1972
Report Number OWRR-A-037-OKLA; 12952,; A-037-OKLA(1)
Stock Number PB-211 542
Additional Subjects ( Aquifers ; Salt water intrusion) ; ( Bentonite ; Membranes) ; Electric potential ; Thermodynamics ; Sodium chloride ; Transport properties ; Heat transfer ; Brines ; Temperature ;
Library Call Number Additional Info Location Last
NTIS  PB-211 542 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 31p
The objectives of the research were to measure the electrical potential across sodium bentonite membranes due to a thermal gradient using sodium chloride solutions of various concentrations and combine these data with equations derived from the thermodynamics of irreversible processes to predict the rate of electrolyte transport. This is of interest to the understanding of the source of brines in aquifers. The electrical potential measurements have shown that for a 1/4 inch Wyoming Bentonite membrane and sodium chloride solutions, the potential gradient, dE/dT, varies in a log-log fashion with concentration. Data are presented that can be used to estimate heats of transport for the sodium ion assuming negligible water and chloride ion transport. The data collected thus far are not sufficient to indicate much about the transport mechanism in the membrane.