Abstract
The transport of potassium ions from mixed aqueous potassium and magnesium chloride solutions through an organic liquid membrane into water or a pure aqueous magnesium chloride solution at the same water activity was studied as a function of time and the initial potassium chloride concentration. The liquid membrane contained a crown ether (dibenzo-18-crown-6), a chloride ion solvating agent (m-cresol), and a diluent (p-nonylphenol) and was practically impermeable to magnesium ions. When the potassium chloride transferred into water it built up a concentration in one case more than four times that in the original mixed electrolyte solution. Concurrently, water was transferred in the opposite direction until the whole aqueous potassium chloride solution was absorbed in the mixed salt solution. The mechanisms and driving forces for the salt and water transport are discussed.
Original language | English |
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Pages (from-to) | 794-797 |
Number of pages | 4 |
Journal | Journal of Physical Chemistry |
Volume | 87 |
Issue number | 5 |
DOIs | |
State | Published - 1983 |