Study on Adsorption and Desorption of Cr~(3+) on Spherical Cellulose Adsorbent

The adsorption and desorption of Cr 3+ in water on spherical cellulose adsorbent,including static isothermal adsorption and various factors having effects on adsorption were studied by means of static and dynamic methods.Moreover,the adsorption mechanism was also explored.The adsorbing capacity of the adsorbent for Cr 3+ is 28 mg/g.Using 1.2 mol/L of HCl solution for recovering Cr 3+ has satisfactory effect.The static and dynamic adsorption efficiencies are all about 90% and the desorption efficiencies reach over 85%.Although the adsorption and desorption efficiencies of static method are slightly higher than those of dynamic method,the latter needs less time and is more suitable for industrial application.