Abstract
The transport phenomena of metals through gelled supported liquid membranes (GSLMs) containing di(2-ethylhexyl)dithiophosphoric acid (DTPA) as a carrier have been studied. The gelled phase is composed of poly(vinyl chloride) PVC) and ortho-nitrophenyloctylether (NPOE). It was shown that the best method to obtain an optimal GSLM is to dry the membrane in water-free atmosphere. The maximum transfer rates of silver, mercury and cadmium under optimal stripping conditions were measured to be (3-6) × 10-10 mol/cm2-sec. The effective diffusion coefficients decreased with the increase of PVC and DTPA concentrations.
Original language | English |
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Pages (from-to) | 41-50 |
Number of pages | 10 |
Journal | Journal of Membrane Science |
Volume | 71 |
Issue number | 1-2 |
DOIs | |
State | Published - 3 Jul 1992 |
Externally published | Yes |
Keywords
- carrier
- di(2-ethylhexyl)dithiophosphoric acid
- gels
- metal transport
- supported liquid membranes
ASJC Scopus subject areas
- Biochemistry
- General Materials Science
- Physical and Theoretical Chemistry
- Filtration and Separation