Modification of electrospun polyacrylonitrile nanofibers with EDTA for the removal of Cd and Cr ions from water effluents

Modification of electrospun polyacrylonitrile nanofibers with EDTA for the removal of Cd and Cr... Article history: Polyacrylonitrile (PAN) nanofibers were obtained by electrospinning technique prior to surface modifica- Received 23 November 2015 tion with polyethylenediaminetetraacetic acid (EDTA) using ethylenediamine (EDA) as the cross-linker. Received in revised form 1 February 2016 The modified nanofibers (EDTA-EDA-PAN) were subsequently applied in the wastewater treatment for Accepted 2 February 2016 the removal of Cd(II) and Cr(VI). Textural and chemical characterizations of the nanofibers were carried Available online 4 February 2016 out by analysis of the specific surface area (Brauner Emmet and Teller (BET)) and thermogravimetric anal- yses, scanning electron microscopy and Fourier transform infrared spectroscopy. From the adsorption Keywords: equilibrium studies with Langmuir, Freundlich and Temkin isotherm models, Freundlich was found most Polyacrylonitrile suitable for describing the removal mechanism of the target metals as they collect on a heterogeneously Nanofibers functionalized polymer surface. The EDTA-EDA-PAN nanofibers showed effective sorption affinity for Electrospinning -1 both Cd(II) and Cr(VI), achieving maximum adsorption capacities of 32.68 and 66.24 mg g , respectively, Adsorption Trace metals at 298 K. In furtherance, the nanofibers were regenerated by simple washing with 2 M HCl solution. Con- Water effluent clusively, the EDTA-EDA-PAN nanofibers were found to be efficient for the removal of Cd(II) and http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

Modification of electrospun polyacrylonitrile nanofibers with EDTA for the removal of Cd and Cr ions from water effluents

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Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier B.V.
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2016.02.018
Publisher site
See Article on Publisher Site

Abstract

Article history: Polyacrylonitrile (PAN) nanofibers were obtained by electrospinning technique prior to surface modifica- Received 23 November 2015 tion with polyethylenediaminetetraacetic acid (EDTA) using ethylenediamine (EDA) as the cross-linker. Received in revised form 1 February 2016 The modified nanofibers (EDTA-EDA-PAN) were subsequently applied in the wastewater treatment for Accepted 2 February 2016 the removal of Cd(II) and Cr(VI). Textural and chemical characterizations of the nanofibers were carried Available online 4 February 2016 out by analysis of the specific surface area (Brauner Emmet and Teller (BET)) and thermogravimetric anal- yses, scanning electron microscopy and Fourier transform infrared spectroscopy. From the adsorption Keywords: equilibrium studies with Langmuir, Freundlich and Temkin isotherm models, Freundlich was found most Polyacrylonitrile suitable for describing the removal mechanism of the target metals as they collect on a heterogeneously Nanofibers functionalized polymer surface. The EDTA-EDA-PAN nanofibers showed effective sorption affinity for Electrospinning -1 both Cd(II) and Cr(VI), achieving maximum adsorption capacities of 32.68 and 66.24 mg g , respectively, Adsorption Trace metals at 298 K. In furtherance, the nanofibers were regenerated by simple washing with 2 M HCl solution. Con- Water effluent clusively, the EDTA-EDA-PAN nanofibers were found to be efficient for the removal of Cd(II) and

Journal

Applied Surface ScienceElsevier

Published: Apr 30, 2016

References

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