Abstract
A new simple procedure to prepare chitosan–calcium pectinate pellets from a chitosan solution in acetic acid was developed. Porous beads were prepared by mixing a chitosan solution in acetic acid and a pectinate solution in water. The obtained suspension was dropped into a CaCl2 solution. These pellets were studied as adsorbents for Pb(II) and Cd(II) in acidic aqueous solutions because chitosan is a biopolymer with the capacity of adsorbing heavy and transition metal ions. Kinetics data were reported for conditions under which these contaminants were adsorbed in low concentrations.
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