Next Article in Journal
High Performances of Artificial Nacre-Like Graphene Oxide-Carrageenan Bio-Nanocomposite Films
Next Article in Special Issue
Synthesis, Characterization and Hexavalent Chromium Adsorption Characteristics of Aluminum- and Sucrose-Incorporated Tobermorite
Previous Article in Journal
A Fast Humidity Sensor Based on Li+-Doped SnO2 One-Dimensional Porous Nanofibers
Previous Article in Special Issue
Enhanced CO2 Adsorption on Activated Carbon Fibers Grafted with Nitrogen-Doped Carbon Nanotubes
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle
Materials 2017, 10(5), 539; doi:10.3390/ma10050539

Functionalization of Magnetic Chitosan Particles for the Sorption of U(VI), Cu(II) and Zn(II)—Hydrazide Derivative of Glycine-Grafted Chitosan

1
Nuclear Materials Authority, 530 El Maadi, Cairo, Egypt
2
Ecole des Mines d’Alès, Centre des Matériaux des Mines d’Alès, 6 Avenue de Clavières, F-30319 Ales CEDEX, France
3
Faculty of Nursing, Menoufia University, Al Minufya, 00123 Shebine El-Koam, Egypt
*
Author to whom correspondence should be addressed.
Academic Editor: Jaroslaw W. Drelich
Received: 19 April 2017 / Revised: 5 May 2017 / Accepted: 9 May 2017 / Published: 16 May 2017
(This article belongs to the Special Issue Sorption Materials for Environment Purification)
View Full-Text   |   Download PDF [1474 KB, uploaded 16 May 2017]   |  

Abstract

A new magnetic functionalized derivative of chitosan is synthesized and characterized for the sorption of metal ions (environmental applications and metal valorization). The chemical modification of the glycine derivative of chitosan consists of: activation of the magnetic support with epichlorohydrin, followed by reaction with either glycine to produce the reference material (i.e., Gly sorbent) or glycine ester hydrochloride, followed by hydrazinolysis to synthesize the hydrazide functionalized sorbent (i.e., HGly sorbent). The materials are characterized by titration, elemental analysis, FTIR analysis (Fourrier-transform infrared spectrometry), TGA analysis (thermogravimetric analysis) and with SEM-EDX (scanning electron microscopy coupled to energy dispersive X-ray analysis). The sorption performances for U(VI), Cu(II), and Zn(II) are tested in batch systems. The sorption performances are compared for Gly and HGly taking into account the effect of pH, the uptake kinetics (fitted by the pseudo-second order rate equation), and the sorption isotherms (described by the Langmuir and the Sips equations). The sorption capacities of the modified sorbent reach up to 1.14 mmol U g−1, 1.69 mmol Cu g−1, and 0.85 mmol Zn g−1. In multi-metal solutions of equimolar concentration, the chemical modification changes the preferences for given metal ions. Metal ions are desorbed using 0.2 M HCl solutions and the sorbents are re-used for five cycles of sorption/desorption without significant loss in performances. View Full-Text
Keywords: magnetic sorbent; chemical modification of chitosan; uranium; copper; zinc; sorption isotherms; uptake kinetics; metal desorption; sorbent recycling; physico-chemical characterization. magnetic sorbent; chemical modification of chitosan; uranium; copper; zinc; sorption isotherms; uptake kinetics; metal desorption; sorbent recycling; physico-chemical characterization.
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Hamza, M.F.; Aly, M.M.; Abdel-Rahman, A.A.-H.; Ramadan, S.; Raslan, H.; Wang, S.; Vincent, T.; Guibal, E. Functionalization of Magnetic Chitosan Particles for the Sorption of U(VI), Cu(II) and Zn(II)—Hydrazide Derivative of Glycine-Grafted Chitosan. Materials 2017, 10, 539.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top