ORAL
| SESSION: MoltenMonAM-R3 | Gaune-Escard International Symposium on Sustainable Molten Salt and Ionic Liquid Processing (5th Intl. Symp. on Sustainable Molten Salt and Ionic Liquid Processing) |
| Mon Oct, 23 2017 | Room: Peninsula 1 |
| Session Chairs: Tamas Oncsik; Session Monitor: TBA |
11:30: [MoltenMonAM02]
Selective Extraction of Cu(II) by using a New Aqueous Biphasic Systems Based on Task Specific Ionic Liquids with Salicylate Anion Tatjana
Trtic Petrovic1 ; Slobodan
Gadzuric
2 ; Milan
Vranes
2 ; Aleksandra
Dimitrijevic
3 ; Jelena
Djordjevic
1 ; Nikola
Zdolsek
3 ; Aleksandar
Tot
4 ;
1Vinca Institute of Nuclear Sciences, Belgrade, Serbia and Montenegro (formerly Yugoslavia);
2Faculty of Sciences, University of Novi Sad, Novi Sad, Serbia and Montenegro (formerly Yugoslavia);
3Vinča Institute of Nuclear Sciences,University of Belgrade, Belgrade, Serbia and Montenegro (formerly Yugoslavia);
4Faculty of Sciences, University of Novi Sad, Department of Chemistry, Biochemistry and Environmental Protection, Novi Sad, Serbia and Montenegro (formerly Yugoslavia);
Paper Id: 175
[Abstract] Ionic liquids (ILs) represent a new group of highly potential solvents due to their remarkable features such as negligible vapor pressure at room temperature, high thermal stability, variable viscosity and tunable physicochemical properties by selecting the cation and anion combination. The water immiscible imidazolium based IL was the first applied for the biphasic metal extraction and still remains the most frequently employed system for this task. In this work task, specific water miscible ionic liquids (ILs) were synthetizes and applied for extraction of the selected heavy metals (Cu, Ni, Zn, Pb and Cd).
Four ILs have been synthetized and characterized: 1-butyl-3-methyl salicylate ([bmmim][Sal]), 1-(3-hydroxypropyl)-3-methylimidazolium salicylate ([HO(CH2)3mim][Sal]), 1-(3-hydroxypropyl)-3-methylimidazolium chloride ([HO(CH2)3mim][Cl]) and 1-(4-hydroxy-2-oxybutyl)-3-methylimidazolium salicylate ([HO(CH2)2O(CH2)2mim][Sal]). The phase behavior of the ternary systems (IL+K3PO4+H2O) was studied, and conditions for metal extraction were optimized.
The partition coefficients of the targeted heavy metals in the investigated aqueous biphasic systems, defined as the ratio of the concentration of the metal ion in the IL-rich and in the salt-rich aqueous phases, were determined. It was found that [bmmim][Sal] selectively extracted Cu(II). The ABS based on [bmmim][Sal] were applied for selective extraction of Cu(II) from waste water from copper mine Bor.
