1965 Volume 38 Issue 11 Pages 2002-2004
The process of electrodialysis, as a means of demineralizing brackish water, is briefly described. Polarization, a limiting factor in the practical application of the process, is a function of several variables, one of which is temperature. In this study the temperature dependence of limiting current density and power consumption was examined. Experiments conducted at elevated temperatures (35.5°C and 40°C) showed that the limiting current densities are increased and the power consumption is decreased. At low temperatures (5°C) marked decrease in limiting current density was observed. Comparison of power consumption data at 40°C and 5°C show that significant differences occur with feeds more concentrated than 2000 p.p.m.
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