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Competitive Liquid–Liquid Extraction of Cu(II) Ion from Aqueous Using New Diazo-Compounds

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Abstract

Among the main contributors of water pollution are heavy metals. By being a component of the structure of enzymes, these metals, which are extremely harmful to both human health and the environment, exhibit toxic effects in living things. In this work, we aimed to prepare three phenolic-oxime derivatives (T1-oxime/T3-oxime) for liquid–liquid extraction of Cu(II) ions. The phenolic-oximes (T1-oxime/T3-oxime) were characterized by FT-IR, 1H-NMR and UV–Vis spectroscopy and the element percentages in their structures were determined by elemental analysis. Synthesized oxime compounds were subjected to liquid–liquid extraction of Cu(II) ion from the aqueous solution. The effect of pH, time and initial metal ion concentration on the extraction of Cu(II) ion was investigated. Within a short time (less than 30 min), all three oxime compounds showed 80% extraction of Cu(II) ion at pH = 4. The substitute groups at the meta position with respect to the oxime group affected the extraction of Cu(II) ion at pH = 1–2 range. The compounds were also found showed very quick extraction Cu(II) from aqueous solution to the organic phase (CHCl3) via coordination to the phenolic oxime compounds. Finally, the oxime compounds showed highly selective Cu(II) extraction in the presence of an interfering Pb(II), Ni(II) and Fe(II) ions.

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All data generated or analysed during this study are included in this published article (and its supplementary information files).

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Funding

The authors thank Kahramanmaras Sutcu Imam University for financial support (Project Number: 2018/2-10YLS).

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Correspondence to Muharrem Karabörk.

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Karabörk, M., Kırveli, E., Kırpık, H. et al. Competitive Liquid–Liquid Extraction of Cu(II) Ion from Aqueous Using New Diazo-Compounds. Water Air Soil Pollut 234, 130 (2023). https://doi.org/10.1007/s11270-023-06092-3

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  • DOI: https://doi.org/10.1007/s11270-023-06092-3

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