分子印迹强化胺化改性壳聚糖吸附Cd^(2+)性能研究  

Study on the adsorption capacity of chitosan modified by molecular imprinted enhancement and amination method for Cd^(2+)

作　　者：唐雪娇[1] 张志丹[1] 章熠凡 周丽红[1] 甘兰[1] 段雨欣[1] 

机构地区：[1]南开大学环境科学与工程学院,天津300071

出　　处：《工业水处理》2016年第8期40-43,共4页Industrial Water Treatment

基　　金：国家自然科学基金(NSFC51308306);天津市应用基础与前沿技术研究计划(14JCQNJC08400);国家级大学生创新创业训练计划(121005538)

摘　　要：利用分子印迹强化胺化技术制备Cd^(2+)模板改性壳聚糖P(Cdb2+)-C-CTS(Cda2+),研究了吸附剂中Cd^(2+)模板含量对其吸附水中Cd^(2+)的性能及含水率的影响。吸附容量随着a值和b值的增加而升高,当a为0.45、b为0.40时,吸附容量达到最大值。以P(Cd0.402+)-C-CTS(Cd0.452+)为研究对象,考察了p H对Cd^(2+)吸附容量的影响,并对吸附选择性能进行研究。结果表明,分子印迹强化胺化技术可制备得到吸附效率更高、选择性更好的改性壳聚糖吸附剂。Molecular imprinted enhancement and amination technique has been used for preparing Cd^2＋-templet modified chitosan P （Cdb^2＋）-C-CTS （Cda^2＋）. The influences of Cd^2＋-templet contents in the adsorbent on the adsorption capacity for Cd^2＋ in water and its water content are studied. The adsorption capacity increases with the increase of a value and b value. When a is 0.45 and b is 0.40,the adsorption capacity reaches the max. Taking P （Cd0.40^2＋）-C- CTS （Cd0.45^2＋） as the research subject,the influences of pH on the adsorption capacity for Cd^2＋ are investigated, and its adsorption selectivity is studied, as well. The results show that modified chitosan adsorbent having higher adsorbing efficiency and better selectivity can be prepared and obtained by molecular imprinted enhancement and amination method.

关 键 词：改性壳聚糖 分子印迹强化 吸附 

分 类 号：X703[环境科学与工程—环境工程]