Abstract
The extraction mechanism of cadmium (II) with dioleylphosphoric acid has been investigated in a liquid-liquid extraction system. Dioleylphosphoric acid was found to possess a high extraction potential for cadmium ions. The composition of the complex between a cadmium ion and the extractant was elucidated by slope analysis and by Job's method. The cadmium ion reacts with two dimers of dioleylphosphoric acid in n-dodecane and two protons in the extractant are released to the aqueous phase. The location site of the organometallic complex CdR2•4HR in the organic solvent has been observed by a light scattering method performed on loaded organic solution to exist in the wall of reversed micelles. Further, the back-extraction was easily achieved by contacting the loaded organic phase with hydrochloric acid solution.
| Original language | English |
|---|---|
| Pages (from-to) | 62-72 |
| Number of pages | 11 |
| Journal | Solvent Extraction Research and Development, Japan |
| Volume | 1997 |
| Issue number | 4 |
| Publication status | Published - 1997 |
All Science Journal Classification (ASJC) codes
- General Chemistry
- General Chemical Engineering
- Filtration and Separation
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