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Synthesis and spectral characterization of bis (salicylidene)-1, 2-diaminopropane Schiff base ligand and investigation of their copper(II) extraction capability from aqueous medium

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Abstract

In the present study, a polydentate Schiff base bis (salicylidene)-1,2-diaminopropane (H2L) was synthesized and characterized by elemental analysis, FTIR spectroscopy, 1H-NMR, and 13C-NMR spectroscopy. Then, the synthesized Schiff base has been used as a new extracting agent for copper (II) ions from aqueous to the organic phase. The effects of process parameters such as contact time, pH of aqueous phase, and bis (salicylidene)-1,2-diaminopropane concentration were investigated. Percentage extraction (%E) and distribution coefficient (D′) were calculated to determine the extracting capability of the bis (salicylidene)-1,2-diaminopropane upon copper ions Cu+2. The optimum conditions of copper extraction have been established. The stoichiometry of the extracted species was ascertained by the graphical method of slope analysis; their equilibrium constant is also calculated at constant temperature (T = 293.2 K).

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Acknowledgements

The authors gratefully acknowledge the support from the Department of Process Engineering, Faculty of Applied Sciences, University of Kasdi Merbah-Ouargla and The Scientific Technical Research Center in Physico-Chemical Analysis (CRAPC), Ouargla, Algeria.

Funding

This work was financially supported by the Department of Process Engineering, Faculty of Applied Sciences, Scientific and Technical Research Center in Physical–Chemical Analysis, University of Kasdi Merbah, Algeria.

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Correspondence to Amal Guerdouh.

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Guerdouh, A., Tabchouche, A., Kaouche, A. et al. Synthesis and spectral characterization of bis (salicylidene)-1, 2-diaminopropane Schiff base ligand and investigation of their copper(II) extraction capability from aqueous medium. Biomass Conv. Bioref. 14, 8993–8999 (2024). https://doi.org/10.1007/s13399-024-05416-5

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