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The permselective coefficient of inorganic ions on reverse osmosis membrane

Authors
Journal
Desalination
0011-9164
Publisher
Elsevier
Publication Date
Volume
17
Issue
3
Identifiers
DOI: 10.1016/s0011-9164(00)84060-6

Abstract

Abstract Although many investigations on the rejection of inorganic ions in reverse osmosis were carried out for single-solute systems, their measurements could not be compared exactly with each other because of the change of the membrane property with time. In this paper, the permselective coefficient in reverse osmosis was defined similarly to electrodialysis, and those of various ions for mixed-solute systems were measured. From the results, an approximately linear relationship exists between a logarithm of the permselective coefficient of each ion and the charge-to-radius ratio. The influence of experimental conditions on the permselective coefficient was studied.

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