蒙脱土/两性淀粉复合材料对甲基橙的吸附研究  

Study on adsorption of methyl orange by montmorillonite/amphoteric starch composites

作　　者：段凯迪 张彩宁[1] 王琛[1] 王煦漫[1] 赵明远[1] 

机构地区：[1]西安工程大学纺织与材料学院,陕西西安710048

出　　处：《化学工程师》2017年第11期11-14,共4页Chemical Engineer

基　　金：陕西省教育厅专项科研计划项目(17JK0324);陕西省大学生创新创业训练计划项目(1718);西安工程大学研究生创新基金项目(CX201716)

摘　　要：以淀粉(St)、甲基丙烯酰氧乙基三甲基氯化铵(DMC)、丙烯酸(AA)和蒙脱土(MMT)为原料,N,N-亚甲基双丙烯酰胺为交联剂,采用水溶液聚合法制备得到MMT/St-g-P(DMC-AA)复合材料,研究该复合材料对甲基橙(MO)的吸附性能。实验结果显示,产物为插层型的纳米复合材料,对MO的吸附性能良好,吸附量最高可达141.544 mg·g^(-1)。此外,该复合材料对MO的吸附量随着吸附剂用量的增加逐渐降低,随着MO初始浓度和吸附时间的增加先增加最后达到平衡,且其吸附过程符合准二级吸附动力学模型。In order to solve the problem of dyeing wastewater, MMT/St-g-P （DMC-AA） nanocomposite was prepared by aqueous solution polymerization method, using St, MMT, DMC and AA as the raw materials and N, Nmethylenebisacrylamide as the crosslinking agent. The adsorption properties of the composite on MO were studied. The experimental results showed that the MMT/St-g-P （DMC-AA） were intercalated type nanocomposites. The ex- perimental results show that the MMT/St-g-P （DMC-AA） were intercalated type nanocomposites. The composites have good adsorption property for MO, and the maximum adsorbance is 141.544mg·g^-1. In addition, the adsorption capacity of composites for MO decreases with the increasing of adsorbent dosage. The adsorption capacity increases with the initial concentration of MO and the increasing of adsorption time, finally reaches equilibrium. The adsorption process is in accordance with the quasi-second adsorption kinetics model.

关 键 词：淀粉 丙烯酸 吸附 蒙脱土 甲基橙 

分 类 号：Q64[生物学—生物物理学]