ADSORPTION OF Cu (II) ION IN AQUEOUS SOLUTION USING CROSSLINKED CHITOSAN BENTONITE COMPOSITE BEADS AND FILM

Abstract

Direct casting technique was used in the fabrication of crosslinked chitosan coated bentonite (ChB-ECH) film. The composite of the polymer film was analyzed through Fourier transform infrared (FTIR) spectroscopy and the ability of pure chitosan, crosslinked chitosan coated bentonite ChB-ECH beads and film in the adsorption of Cu (II) ion from aqueous solution were compared. Batch adsorption experiments were carried out and the effect of different contact time, pH, and initial concentration on the removal percentage of Cu (II) were studied. Results show that as initial concentration of Cu (II) increase, the adsorption is increasing and the optimum pH for the adsorption of Cu (II) ion on ChB-ECH film is at pH 4 with more than 50% adsorption.