Influence of the solvent on the extraction of copper(II) from nitrate medium using salicylideneaniline |
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| Authors: | Amel Guerdouh Djamel Barkat |
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| Institution: | 1. Laboratory of Chemical Molecular and Environment, Department of Industrial Chemistry, Faculty of Science and Technology, Biskra University, Biskra, Algeriaamelguerdouh@yahoo.fr;3. Laboratory of Chemical Molecular and Environment, Department of Industrial Chemistry, Faculty of Science and Technology, Biskra University, Biskra, Algeria |
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| Abstract: | Different solvents including cyclohexane, dichloromethane, chloroform, toluene, 1-octanol, and methyl isobutyl ketone (MIBK) have been evaluated in extracting copper(II) from nitrate medium by salicylideneaniline. Extracted species differs from solvent to solvent: CuL2 in cyclohexane, toluene, 1-octanol, and methyl isobutyl ketone. However, in dichloromethane or chloroform, there are two complexes of the type CuL2 and CuL2(HL). The extraction constants and percentage of extraction (%E) are calculated for different solvents. Solvent played an important role in recovering copper(II) from the aqueous solution, thus affecting the extraction equilibrium and extraction efficiency. The nonpolar solvent showed better performance than the polar solvent. The maximum extraction efficiency was 85.75% at pH?=?4.5, which was from cyclohexane. |
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| Keywords: | Copper(II) liquid–liquid extraction salicylideneaniline solvent effects |
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