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The present study reports the synthesis of D-galactose based hydrophobic ionic liquid (IL) and its potential application in the removal of Cd2+ ions from aqueous solution. The synthesized D-galactose based hydrophobic ionic liquid is insoluble in water and stable at room temperature as a solid. Batch adsorption studies were carried out to investigate the sorption capacity of IL toward Cd2+ ions. The experimental data was analyzed with various isotherm and kinetic models to understand the adsorption process. The Arrhenius activation energy was found to be 12.7 and 22.5 kJ/mol, respectively, for 10 and 30 mg/L of initial metal ion concentration suggesting physisorption of Cd2+ ions on to IL. The thermodynamic parameters suggest that the present process is spontaneous and exothermic in nature. The present IL exhibited superior adsorption capacity toward Cd2+ ions in presence of other co-cations in aqueous solution. These results suggest that, the synthesized IL can be a superior adsorbent for the removal of Cd2+ ions from aqueous solution.
Journal | Data powered by TypesetEnvironmental Progress & Sustainable Energy |
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Publisher | Data powered by TypesetWiley |
ISSN | 1944-7442 |
Open Access | 0 |