Removal of Cu2+ ions from aqueous solutions by starch-graft-acrylic acid hydrogels

Guclu G. , KELEŞ S., Guclu K.

POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING, cilt.45, ss.55-59, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 45 Konu: 1
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1080/03602550500373741
  • Sayfa Sayıları: ss.55-59


Gelatinized starch was prepared by constantly stirring a mixture of starch and water at 95 degrees C for 1 hour. Starch-graft-acrylic acid (S-g-AA) hydrogels were prepared by grafting acrylic acid ( AA) [monomer/starch (w/w) 0.5-1.5] onto gelatinized starch with ceric ammonium nitrate as initiator under nitrogen atmosphere. The surface morphology of samples was studied using a scanning electron microscope (SEM). The hydrogels were evaluated for the removal of Cu2+ ion from aqueous solutions at different pH. The concentration of Cu2+ ion in aqueous solution was kept constant at 4 mmol/L. The metal ion removal capacities changed depending on treatment time, initial pH of the solution, and monomer/starch (w/w) ratio of the S-g-AA hydrogels. Cu2+ ion removal capacities were determined by atomic absorption spectrometer (AAS).