Extraction of Cu(II) Ions in Wastewaters Using New Solid/Liquid Phase Microextraction Technique Based on Incorporating Functionalized Carbon Nanotubes into Polypropylene Hollow Fiber

Es’haghi Zarrin^1*, Ahmadpour Ali², Tanha Ali Akbar¹, Sayfi Ali¹, Ayati Ali²

¹Department of Chemistry, Payame Noor University, Tehran, Iran.
²Department of Chemical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran.

DOI: 10.4236/oalib.1100380                

Abstract

This research describes a new design of hollow fiber solid-liquid phase microextraction (HF– SLPME) which was developed for the extraction and measurement of Cu(II) ion in water samples combined with atomic absorption spectroscopy. This method consists of an aqueous feed and the functionalized multi-walled carbon nanotubes (F-MWCNTs) with HNO₃ and NaClO, dispersed into n-octanol, are held within the pores and the lumen of a porous hollow fiber as the extractor phase. The presented method allows an effective and enriched recuperation of ionic analyte into MWCNTs/organic phase. The effective parameters were investigated. Under the optimized conditions, a sample of industrial waste water was successfully purified using the proposed method. Our results showed that at optimized extraction conditions, the calibration curve was linear in the range of 0.01 - 20 μg/mL of Cu(II) ions in the initial solution with R² > 0.99 for both F-MWCNTs samples. All experiments were carried out at room temperature (25℃ ± 0.5℃).

Keywords

Solid/Liquid Phase Microextraction, Multi-Walled Carbon Nanotube, Hollow Fiber, Cu(II), Flame Atomic Absorption Spectroscopy

Conflicts of Interest

The authors declare no conflicts of interest.

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