Transport of Europium(III) through Supported Liquid Membrane Containing Diisodecylphosphoric Acid
- 1 July 1989
- journal article
- research article
- Published by Taylor & Francis in Separation Science and Technology
- Vol. 24 (9), 673-683
- https://doi.org/10.1080/01496398908049800
Abstract
Carrier mediated transport of europium has been investigated by the use of a flat-sheet membrane impregnated with diisodecylphosphoric acid (DIDPA). The addition of 1-octanol to the membrane improves the stripping process, and hence europium can be quantitatively transported from the feed solution of 0.1 M HNO3 into the product solution of 5 M HNO3. Its concentration in the feed solution decreases as [Eu] f,t = [Eu] f,0 exp (-k obs t). The apparent rate constant (k obs) increases with increasing carrier concentration and becomes nearly constant above 0.05 M DIDPA The europium flux is proportional to initial europium concentrations less than 10−3 M, and becomes constant at high concentrations.Keywords
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