Application of the electrical conductivity of concentrated electrolyte solutions to industrial process control and design: from experimental measurement towards prediction through modelling
A. De Diego et al., Application of the electrical conductivity of concentrated electrolyte solutions to industrial process control and design: from experimental measurement towards prediction through modelling, TRAC-TREND, 20(2), 2001, pp. 65-78
Different aspects of the conductivity of concentrated electrolyte solutions
and their application to design and control of chemical processes are disc
ussed and reviewed, with particular focus on the work of our research group
during the last few years. An automated system based on the electrodeless
conductivity technique for the measurement of the electrical conductivity o
f solutions as the basis of a titration strategy is described. The inadequa
cy of classical calibration methods when high conductivities are to be meas
ured is highlighted and an alternative methodology is proposed. Our measure
ments on specific concentrated systems of interest in industrial applicatio
ns and the development of general methodologies to treat experimental condu
ctivity data at constant or varying temperature in order to get comprehensi
ve inter- and extrapolation mathematical models are summarised. Theoretical
approaches to explain the variability of conductivity data of electrolyte
solutions with the solute concentration as well as the deviations from idea
lity found at higher concentrations are reviewed and critically evaluated.
Solutions of mixed electrolytes are treated in a similar fashion. (C) 2001
Elsevier Science B.V. All rights reserved.