Journal of Basic and Environmental Sciences

Abstract of:


Acrylamide grafting with Maltodextrin for adsorption of hazardous water pollutants Cu(II), Co(II) and Cr(III)


Alaa M.M. EL-Torky      ,, Gamal O. El-Sayed, Hanan A. Abdelwahed3
Maltodextrin was modified by grafting with acrylamide to improve the swelling characters. The conditions of grafting such as monomer concentration, initiator ratio and grafting temperature were evaluated. The grafting efficiency, the swelling characters as water retention values and sodium binding capacity were determined and nitrogen content were also evaluated for grafting maltodextrin. The structure of these compounds was investigated using FTIR. The optimum condition of grafting ratio of maltodextrin to acrylamide monomer1:6g/g, ratio of maltodextrin to initiator 1:0.03g/g, grafting time three hours and grafting temperature was 70ᴼC. The obtained graft copolymers were used as adsorbents for the removal of Cu(II), Co(II) and Cr(III) ions from an aqueous solution, each one alone. The effect of pH value, contact time, initial metal ion concentration and polymer dosage on metal ions uptake were reported. Adsorption data for adsorbate concentration are most commonly described by adsorption isotherm, such as the Langmuir,Freundlish and Tempkin isotherms.




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