—Blend chitosan-polyvinyl alcohol resin as adsorbent of silver ion was studied. Batch kinetic experiments were carried out the dosage of adsorbent between 0.1–0.5 g and initial concentration of silver ion in range 20.0–100.0 mg/L. The experimental result showed that an increasing dosage of adsorbent and initial concentration of silver ion increased percent adsorption and adsorption capacity. The adsorption capacity of blend chitosan-polyvinyl alcohol resin at 0.5 g and 100 mg/L was 19.1 mg/g. The pseudo-first order and pseudo-second order were employed to evaluate the kinetic model. It was found that the pseudo-second order model was fit for describing the adsorption behavior. The mechanism of silver ion adsorption onto blend chitosan-polyvinyl alcohol resin occurred in 3 steps. The rate limiting step for mechanism of adsorption was film diffusion.
—Adsorption, chitosan-polyvinby alcohol, kinetics, silver ion.
U. Rakchaiyawan, Y. Kulratkitiwong, and K. Piyamongkala are with the Department of Industrial Chemistry, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok Thailand (e-mail: firstname.lastname@example.org, email@example.com, firstname.lastname@example.org).
Cite:U. Rakchaiyawan, Y. Kulratkitiwong, and K. Piyamongkala, "Kinetics Adsorption of Silver Ion by Blend Chitosan-Polyvinyl Alcohol Resin," International Journal of Environmental Science and Development vol. 6, no. 9, pp. 655-659, 2015.