Sorption of Co(II) onto chelating pyrocatechol violet–Amberlite XAD-16 resin

Zakia Bouariche Faculty of Technology, Laboratory of Organic Materials, Process Engineering Department, University of Bejaia, DZ-06000 Bejaia, Algeria

Kamel Belhamel Faculty of Technology, Laboratory of Organic Materials, Process Engineering Department, University of Bejaia, DZ-06000 Bejaia, AlgeriaCorrespondence[email protected]

Mohamed Benamor Faculty of Technology, Laboratory of Organic Materials, Process Engineering Department, University of Bejaia, DZ-06000 Bejaia, Algeria

Chafika Meziti Faculty of Technology, Laboratory of Organic Materials, Process Engineering Department, University of Bejaia, DZ-06000 Bejaia, Algeria

Khedidja Younsi Faculty of Technology, Laboratory of Organic Materials, Process Engineering Department, University of Bejaia, DZ-06000 Bejaia, Algeria

Idir Hassaini Faculty of Technology, Laboratory of Organic Materials, Process Engineering Department, University of Bejaia, DZ-06000 Bejaia, Algeria

Abstract

In this study, a chelating resin was synthesized by covalently linking pyrocatechol violet (PV) with the benzene ring of Amberlite XAD-16 through an azo (–N=N–) spacer group and the resulting resin was characterized by infrared (IR) spectra. It has been used for the sorption of Co(II) in aqueous solutions at batch system by flame atomic absorption spectrometry (FAAS). Co(II) ions were extracted quantitatively in acidic nitric media at pH 4.15–5.10. The sorption capacity of modified resin was 99.36 mg g⁻¹ of resin. The influences of pH of aqueous solutions, the amount of PV-XAD-16 resin, and the electrolyte salt concentration on the sorption of Co(II) ions were examined. The proposed separation-enrichment method was applied for the atomic absorption spectrometric determinations of Co(II) in river water with satisfactory results (recovery greater than 96.77%, relative standard deviation lower than 5%).

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Sorption of Co(II) onto chelating pyrocatechol violet–Amberlite XAD-16 resin

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Sorption of Co(II) onto chelating pyrocatechol violet–Amberlite XAD-16 resin

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