作　　者： (胡建设）; (张昊琳）; (田有粮）; (刘柯利）;

机构地区： 东北大学理学院,辽宁沈阳110819

出　　处： 《东北大学学报（自然科学版）》 2017年第9期1289-1292,共4页

摘　　要： 以硅藻土与壳聚糖为原料,戊二醛作为交联剂,制备了一种复合吸附材料,研究了其对水中Hg^(2+)的吸附性能,探讨了复合吸附材料的配比、Hg^(2+)初始浓度、吸附材料的质量与吸附时间等因素对Hg^(2+)吸附性能的影响.研究表明,随着硅藻土含量的增加,对应Hg^(2+)的吸附容量与去除率均下降;此外,随着Hg^(2+)初始浓度的提高,其去除率降低,而吸附容量却提高;增加吸附剂的质量,Hg^(2+)的吸附容量与去除率也相应增加;当吸附时间在45 min以内,对应的吸附容量与去除率随吸附时间的增加而提高,当吸附时间超过45 min后,吸附容量与去除率基本不变. A new polymer composite adsorption material of diatomite and chitosan was prepared using a crosslinking agent of glutaraldehyde and its adsorption property of mercury ions （Hg2 ＋ ） in water was studied. The effects of the composite material ratio, initial concentration of Hg2＋ , the weight of adsorption material and adsorption time on the Hg2 ＋ removal property were investigated. The results show that the Hg2＋ removal rate and adsorption capacity decrease with the increasing diatomite content in the composite. However,the Hg2＋ removal rate decreases and adsorption capacity increases with the increasing initial concentration of Hg2 ＋ . The Hg2 ＋ removal rate and adsorption capacity increases with the increasing weight of the adsorption material. When the adsorption time is less than 45 min, the corresponding Hg2 ＋ removal rate and adsorption capacity increases with increasing adsorption time, while they become nearly constant after 45 min.

关 键 词： 壳聚糖 硅藻土 复合材料 汞离子 吸附作用