Adsorption Studies for the Removal Heavy Metal by Chitosan-G-Poly (Acrylicacid-Co-Acrylamide) Composite

Abstract

In present research work natural bio polymer "Chitosan" was grafted onto Acrylic acid and Acrylamide and adsorption of some heavy metal studied by batch method. Synthesis of grafted chitosan supersorbent was synthesized by radical polymerization method. The adsorption of heavy metal cations, Cu(II), Cd(II), Ni(II), and Pb(II) from aqueous solution by newly-synthesized superabsorbent composite of chitosan-g-poly (acrylicacid-co-acrylamide) was investigated. The superabsorbent gel was characterized on the basis of FTIR, X-ray differation, Scanning electron Microscopy and thermal properties. The percentage adsorptions of metal ions on adsorbent were determined by batch methods using atomic absorption spectrophotometry (AAS). The effect of experimental parameters, such as pH, treatment time, temperature, adsorbent dose, initial metal ion concentra¬tion on the removal of metal ions was also studied. Chitosan-g-poly (acrylicacid-co-acrylamide) proved to be an effective adsorbent for the removal of different heavy metal ions from aqueous solution.