Liquid-liquid extraction of cadmium(II) by TIOACl (tri-iso-octylammonium chloride) ionic liquid and its application to a TIOACl impregnated carbon nanotubes system
DOI:
https://doi.org/10.3989/revmetalm.051Keywords:
Adsorption, Cadmium, Carbon nanotubes, Extraction, Hydrochloric acid, Ionic liquidAbstract
The extraction of cadmium(II) by the ionic liquid (R3NH+Cl-) (R: tri-iso-octyl) in Exxsol D100 from hydrochloric acid solution has been investigated. The extraction reaction is exothermic. The numerical analysis of metal distribution data suggests the formation of R3NH+CdCl3− and (R3NH+)2CdCl42− species in the organic phase. The results obtained for cadmium(II) distribution have been implemented in an impregnated multi-walled carbon nanotubes system. The influence of aqueous solution stirring speed (250–2000 min−1), adsorbent dosage (0.05–0.2 g) and temperature (20 °C–60 °C) on cadmium adsorption have been investigated.
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