Study of heavy metal ion absorbance by amidoxime group introduced to cellulose-graft-polyacrylonitrile

Authors

  • A. S. El-Khouly,

    Corresponding author
    1. Division of Advanced Device Materials, Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga 816-8580, Japan
    2. Department of Chemistry, Faculty of Science, Tanta University, Tanta 31527, Egypt
    • Division of Advanced Device Materials, Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga 816-8580, Japan
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  • Y. Takahashi,

    1. Division of Advanced Device Materials, Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga 816-8580, Japan
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  • A. A. Saafan,

    1. Department of Chemistry, Faculty of Science, Tanta University, Tanta 31527, Egypt
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  • E. Kenawy,

    1. Department of Chemistry, Faculty of Science, Tanta University, Tanta 31527, Egypt
    2. Department of Chemistry, Petrochemicals Research Chair, Faculty of Science, King Saud University, Riyadh 11451, Kingdom of Saudi Arabia
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  • Y. A. Hafiz

    1. Department of Chemistry, Faculty of Science, Tanta University, Tanta 31527, Egypt
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Abstract

Amidoximated grafted cellulose was obtained by reacting hydroxylamine and cellulose-graft-polyacrylonitrile (C-g-PAN), prepared by KMnO4/citric acid redox system, and the resultant amidoximated grafted cellulose was characterized by scanning electron microscope (SEM), solid-state NMR, FTIR, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and elemental analysis. The highest value of amidoxime content in the grafted sample was 2.42 mmol/g. The adsorption efficiencies of amidoximated grafted cellulose have been evaluated with studying different adsorption conditions. Amidoximated sample with amidoxime content 2.42 mmol/g showed high ability to adsorb the metal ions from the aqueous solutions as high as 1.7 mmol/g, 1.6 mmol/g, and 0.84 mmol/g for Co2+, Cu2+, Ni2+ ions, respectively, at the highest original metal ion concentration. These values are about three times larger than previous studies. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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