交联壳聚糖对Mo(Ⅵ)、Bi(Ⅲ)吸附性能的研究  

Adsorption Properties of Crosslinked Chitosan for Molybdenum(Ⅵ),Bismuth(Ⅲ)

作　　者：莫少波[1] 翁玥[1] 钱沙华[2] 肖玫[2] 薛爱芳[2] 

机构地区：[1]武汉大学化学与分子科学学院,湖北武汉430072 [2]武汉大学资源与环境科学学院,湖北武汉430079

出　　处：《武汉大学学报（理学版）》2005年第4期453-456,共4页Journal of Wuhan University:Natural Science Edition

基　　金：国家自然科学基金(20277028);湖北省自然科学基金资助项目(2002AB059)

摘　　要：研究了以环氧氯丙烷为交联剂制备的交联壳聚糖(CCTS)对于Mo(Ⅵ)、Bi(Ⅲ)的吸附性能.结果表明:在pH=3.0时,CCTS对Mo(Ⅵ)、Bi(Ⅲ)的吸附率分别为98.0%,100%,吸附平衡时间分别为20min和5min,饱和吸附量分别为21.4,620.8g/kg.用1.00mL,0.1mol/L的NaOH溶液和4.0mL,5.0mol/L的HCl溶液可将吸附在CCTS上的Mo(Ⅵ)、Bi(Ⅲ)定量洗脱下来,脱附率分别为93%和96.5%.The adsorption properties of crosslinked chitosan（CCTS） for Molybdenum（ Ⅵ ） and Bismuth （Ⅲ）were investigated in this paper. Experimental results show that the adsorption rates of CCTS are closely related to the acidity of solution. For Mo（Ⅵ） and Bi（Ⅲ）, the adsorption rates are 98% and 100% at pH 3.0; the adsorption equilibration time are 20 min and 5 min; and the saturation adsorption capacities are 21.4 g/kg and 620.8 g/kg, respectively. Adsorbed Mo（ Ⅵ ） and Bi（ Ⅲ ）could be quantitatively eluted from CCTS with 1.00 mL of 0. 1 mol/L NaOH and 4.00 mL of 5.0 mol/L HCL respectively.

关 键 词：交联壳聚糖 Mo(Ⅵ)、Bi(Ⅲ) 吸附 

分 类 号：O636.1[理学—高分子化学]