In this paper, the properties of sulfur-containing cellulose derivatives, sulfhydryl cellulose (SC) and cotton cellulose xantante (CCX), were studied as well as their adsorption properties and mechanisms to heavy metal ions. It is proved by the experiments that the chemical properties of sulfur-containing cellulose derivatives which are excellent kinds of solid adsorbent are more stable than inorganic sulfides. Their sulfur content reduced lower than 10% when they were exposed in air for one month. Their hydrolytic ratio was less than 3% when they were soaked in neutral aqueous solution for 10 days at room temperature. And the saturated adsorption capacity of SC was Hg2+ 58 mg/g, Cu2+ 17 mg/g, Pb2+ 55 mg/g, Cd2+ 29 mg/g, while that of CCX was Hg2+ 82 mg/g, Cu2+ 26 mg/g, Pb2+ 77 mg/g, Cd2+ 49 mg/g respectively. Furthermore, their adsorption capacities on heavy metal ions were not reduced when they were regenerated for 10 times.
Journal of Functional Materials