Proceedings title: Advanced Materials Research
Editors: Li B
Publisher: Trans Tech Publications
Volume number: 549
Conference information: Chemical Engineering and Material Properties II
Abstract: Using Palygorskite as matrix, chitosan (CTS) as functional monomer, and introducing the ion-imprinting technique to the synthesis process, a new Cd2+-IIP was prepared for selective separation of Cd2+ from aqueous solution was prepared. The static method was adopted to study the adsorption capacity of Cd2+-IIP for Cd2+, and the effects of contact time, pH value, adsorbent dosage and temperature of the initial solution on the adsorption characters of Cd2+ were investigated. Experiment results indicated that the adsorption was rapid during the first 20 minuts and equilibrium were attained within 70 minutes. The Cd2+-IIP had higher adsorption capacity to Cd2+ than other different ions. There were less difference in the adsorption capacity between different dosages of Cd2+-IIP, but the adsorption capacity of Cd2+ adsorbed onto Cd2+-IIP decreased with increasing the dosages.Under the optimum conditions, the ions-imprinted polymer offered a fast adsorption of Cd2+ and the maximum capacity was 18.20 mg/g.
Template and target information: cadmium ions, Cd(II)
Author keywords: Cd2+ Ions, chitosan, Ion-Imprinting Technique, Palygorskite