Abstract
An extractant having a strong affinity for palladium, bis(2,4,4-trimethylpentyl) monothiophosphinic acid (Cyanex 302), was enclosed into microcapsules by mixing with a biopolymer, calcium alginate gel polymer. The uptake of Pd2+ and other metal ions in the microcapsules was investigated; a relatively large distribution coefficient of Pd2+, Kd, Pd, of above 103 cm3/g was obtained around 0.1 M HNO3, and there was a large difference in Kd value between Pd2+ and other metal ions. The uptake of Pd2+ on microcapsules followed a Langmuir-type uptake isotherm. The microcapsules were packed into a column and then a separation of Pd2+ was performed.
Original language | English |
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Pages (from-to) | 31-44 |
Number of pages | 14 |
Journal | Separation Science and Technology |
Volume | 36 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2001 Feb 13 |
Keywords
- Alginate gel
- Biopolymer
- Cyanex 302
- Microcapsule
- Palladium
- Separation factor
- Uptake
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
- Process Chemistry and Technology
- Filtration and Separation