Porous cellulosic adsorbent for the removal of Cd (II), Pb(II) and Cu(II) ions from aqueous media


BARSBAY M. , KAVAKH P. , Tilki S. , KAVAKH C., GUVEN O.

Radiation Physics and Chemistry, vol.142, pp.70-76, 2018 (Journal Indexed in SCI Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 142
  • Publication Date: 2018
  • Doi Number: 10.1016/j.radphyschem.2017.03.037
  • Title of Journal : Radiation Physics and Chemistry
  • Page Numbers: pp.70-76
  • Keywords: Iminodiacetic acid (IDA), Cd (II), Pb(II), Cu(II), Radiation-induced grafting, POLYMERIC LIGAND EXCHANGER, IMINODIACETIC ACID, GLYCIDYL METHACRYLATE, RAFT POLYMERIZATION, CARBON NANOTUBES, COPPER IONS, LOW-COST, ADSORPTION, CADMIUM, FUNCTIONALIZATION

Abstract

The main objective of this work is to prepare a renewable cellulosic adsorbent by gamma-initiated grafting of poly(glycidyl methacrylate) (PGMA) from cellulose substrate and subsequent modification of PGMA with chelating species, iminodiacetic acid (IDA), for Cd (II), Pb(II) and Cu(II) removal from aqueous media. Modification of PGMA grafted cellulose with IDA in aqueous solution under mild conditions has proceeded efficiently to yield a natural-based and effective porous adsorbent with well-defined properties as provided by the controlled polymerization technique, namely RAFT, applied during the radiation-induced graft copolymerization step and with sufficient degree of IDA immobilization as confirmed by XPS, FTIR, contact angle measurements and elemental analysis. In order to examine the Cd (II), Pb(II) and Cu(II) removing performance of the resulting adsorbent, batch experiments were carried out by ICP-MS. The adsorption capacities were determined as 53.4 mg Cd(II)/g polymer, 52.0 mg Pb(II)/g polymer and 69.6 mg Cu(II)/g polymer at initial feed concentration of 250 ppm, showing the promising potential of the natural-based adsorbent to steadily and efficiently chemisorb toxic metal ions.