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Books > Professional & Technical > Industrial chemistry & manufacturing technologies
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Mass Transfer and Kinetics of Ion Exchange (Hardcover, 1983 ed.)
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Mass Transfer and Kinetics of Ion Exchange (Hardcover, 1983 ed.)
Series: NATO Science Series E:, 71
Expected to ship within 10 - 15 working days
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While ion-exchange processes were originally used for the treatment
of very dilute solutions, many applications for the treatment of
concentrated solu tions have been developed in recent years. In
these situations, the mass transfer bottlenecks are located in
the~, rather than the liquid phase. Therefore, the development of
quantitative models for ion-exchange kinetics requires knowledge
about the conductance characteristics of ions and solvent in the
solid phase. A useful approach towards this aim is the study of
trans port characteristics of these species, and of their
interactions in solid ion exchange membranes. Many different
transport processes and related phenomena can be observed in
membrane-solution systems, e.g., ion migration, electroosmosis,
diffusion arid self-diffusion, osmosis, hydraulic flow,
hyperfiltration (reverse osmosis) or ultrafiltration, streaming
potential and streaming current, and membrane potentials (also
called "membrane concentration potentials"). It is important to
correlate all these phenomena so as to avoid a very large number of
unnec essary measurements. Such correlation is often possible
[Meares, 1976] since all these phenomena are determined by the ease
of migration of the different species across the membrane.
Important correlations have been made and summar ized even before
high-capacity ion-exchange membranes became commercially available
[Sollner, 1950, 197iJ.
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