纤维素基磁性聚偕胺肟树脂的研究──Ⅰ.树脂吸附二价重金属离子  

Studies on cellulose-based magnetic polyamidoxime adsorbents──Ⅰ. BMAO for divalent heavy-metallic cations uptake

作　　者：杨超雄[1] 吴锦远[1] 

机构地区：[1]中国科学院广州化学研究所,广州510650

出　　处：《纤维素科学与技术》1998年第2期36-44,共9页Journal of Cellulose Science and Technology

基　　金：中国科学院广州化学研究所纤维素化学开放研究实验室资助

摘　　要：碱式纤维素基磁性聚偕胺肟树脂（BMAO）吸附Co2+、Ni2+、Zn2+、Cd2+、和Cu2+、Hg2+、Pb2+二价重金属离子的起始速度和平衡吸附容量有很大的差别，认为是与离子结构及配位活性有关。吸附速度同受粒内扩散过程所控制。Cu2+、Hg2+和Pg2+在BMAO上吸附符合Freundlich等式和Langmuir等温吸附方程。吸附结果可能是生成1：1配合物。The initial adsorption rate and the saturation capacity of Co2+, Ni7+,Zn2+,Cd2+ ions adsorbed by alkaline edltilere - based Inagnehc polyamidoxime adsorbent (BMAO)dther from those of Cu2+, Hgl+ and Pb2+ ions. It was considered that the features are represented by ionic structUre and coordinative arhvity. Adsorption rate are all conbolled by intrampicledtheion step. Adsorption of Cu2+,Hg2+ and Pb+ ions by BMAO accoch with Freundlichequation and Langrnuir adsorption isotherm. Proboaby, there ions combnes with amidoximegroups to form the l: l complexes.

关 键 词：纤维素基 聚偕胺肟 重金属离子 吸附 

分 类 号：O636.11[理学—高分子化学] O647.32[理学—化学]