Extraction and separation of In(III), Ga(III) and Zn(II) from sulfate solution using extraction resin |
| |
| Affiliation: | 1. Faculty of Materials, Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China;2. Institute of Resources Utilization and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou 510650, China;3. State Key Laboratory of Separation and Comprehensive Utilization of Rare Metals, Guangzhou 510650, China;4. Guangdong Province Key Laboratory of Rare Earth Development and Application, Guangzhou 510650, China;1. School of Chemistry & Environmental Engineering, Changchun University of Science & Technology, Changchun 130022, China;2. State Key Laboratory of Rare Earth Resource Utilization, ERC for the Separation and Purification of REs and Thorium, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;3. University of Chinese Academy of Sciences, Beijing 100049, China |
| |
| Abstract: | The separation of In(III), Ga(III) and Zn(II) from sulfate solution has been studied using an extraction resin containing 2-ethylhexyl phosphoric acid mono(2-ethylhexyl) ester (P507 extraction resin). The effect of pH on the extraction of each metal was determined. Extraction isotherms were then constructed at selected pH. Results show that In(III) is first extracted from aqueous solutions at pH 2.0 using this resin while Ga(III) and Zn(II) are co-extracted at pH 3.0. Their separation can be carried out using HCl of different concentrations as eluants. The saturation adsorption capabilities of indium(III) and gallium(III) were evaluated as 47.2 and 31.0 mg/g or 0.41 and 0.44 mmol/g, respectively. The molar ratio of metal ion: P507 reagent on resin was about 1:3. Loaded resins can be regenerated, and the metals can be recovered selectively. Two fixed-bed columns arranged in-series were successfully used for the separation and recovery of these three metal ions from a multi-component solution. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
