Selective removal of cesium(I), strontium(II) and barium(II) cations with proton-ionizable lariat ethers in the ion flotation process
1
Tadeusz Kościuszko Military Academy
2
Wrocław University of Technology
Publication date: 2004-01-01
Corresponding author
Władysław Walkowiak
Institute of Inorganic Chemistry and Metallurgy of Rare Elements, Wrocław University of Technology, 50-370 Wrocław, Wybrzeże Wyspiańskiego 27
Institute of Inorganic Chemistry and Metallurgy of Rare Elements, Wrocław University of Technology, 50-370 Wrocław, Wybrzeże Wyspiańskiego 27
Physicochem. Probl. Miner. Process. 2004;38(1):139-146
KEYWORDS
ABSTRACT
An experimental investigation is presented on competitive flotation of cesium(I), strontium(II) and barium(II) cations from dilute aqueous solutions with proton-ionizable lariat ethers in the presence of foaming agent. The influence of aqueous solution pH on the flotation rate and efficiency with lariat ethers possessing DB-16-C-5 cavity and four different acidic groups, i.e. sulfonamide (1), sulfonic (2), carboxylic (3), and phosphonic (4) was studied. It was found that, the ion flotation of Cs(I), Sr(II) and Ba(II) cations with dibenzo-16-crown-5 derivative 1 from dilute aqueous solutions was fast and selective, which might have a practical meaning for the decontamination of industrial (toxic, radioactive) aqueous solutions.
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| eISSN: | 2084-4735 |
| ISSN: | 1643-1049 |
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