Highly Efficient Extraction of Cadmium(II) in Nitrate Medium by Quarternary Ammoniums

  • Guezzen B
  • Didi M
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Abstract

The solvent extraction of cadmium(II) from nitrate medium was studied. The using extractants were quaternary ammonium-based room temperature ionic liquid Aliquat 336 in either the chloride [(C8H17)3 CH3N+∙Cl−], thiocyanate [(C8H17)3CH3N+∙SCN−] and hydrogenophosphate forms, diluted in the kerosene. The effects of different parameters such as equilibration time, initial pH, O/A molar ratio (nextractant/nCd), initial extractant concentration and ionic strong on extraction of cadmium(II) were investigated. The extraction yields of cadmium(II) increase with increasing initial pH and initial extractant concentration. The stoichiometry of the extracted species was determined on the basis of slope analysis. The effect of various salts such as KSCN and NaNO3 in the feed solution within the concentrations of 10 to 100 mM on extraction of cadmium(II) was studied at optimal initial pH = 6.2.

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Guezzen, B., & Didi, M. A. (2015). Highly Efficient Extraction of Cadmium(II) in Nitrate Medium by Quarternary Ammoniums. American Journal of Analytical Chemistry, 06(11), 898–910. https://doi.org/10.4236/ajac.2015.611085

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