Science of Sintering (Jan 2021)

Novel magnetic polymer/bentonite composite: Characterization and application for Re(VII) and W(VI) adsorption

  • Marković Bojana M.,
  • Stefanović Ivan S.,
  • Nastasović Aleksandra B.,
  • Sandić Zvjezdana P.,
  • Suručić Ljiljana T.,
  • Dapčević Aleksandra,
  • Džunuzović Jasna V.,
  • Jagličić Zvonko,
  • Vuković Zorica M.,
  • Pavlović Vladimir,
  • Onjia Antonije E.

DOI
https://doi.org/10.2298/SOS2104419M
Journal volume & issue
Vol. 53, no. 4
pp. 419 – 428

Abstract

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A novel magnetic polymer/bentonite composite was prepared by suspension copolymerization of glycidyl methacrylate and ethylene glycol dimethacrylate in the presence of magnetic bentonite (MB-PGME) and functionalized with ethylene diamine and hexamethylene diamine (MB-PGME-ED and MB-PGME-HD). The obtained samples were characterized in terms of structure as well as thermal, magnetic and morphological properties. The sorption of rhenium (Re) and tungsten (W) from aqueous solution onto MB-PGME-ED and MB-PGME-HD was investigated considering their contact time and different initial ion concentration, giving possibility for usage of these composites as commercial sorbents. The sorption system follows the pseudo-second order and intraparticle diffusion kinetic models. The results indicated a better fit with the Freundlich isotherm model.

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