摘要
用甲基葡萄糖胺(MG)将甲基丙烯酸缩水甘油酯(GMA)和三甲基丙烯酸三甲醇基丙烷酯(TRIM)的大孔共聚物功能化改性,制备出新型硼特效螯合树脂. 通过红外光谱鉴定了大孔共聚物、螯合树脂及吸附硼后树脂的结构,研究了该树脂对盐湖卤水中硼的吸附性能,考察了树脂基体聚合物性质对硼吸附量的影响,并建立了树脂对硼的吸附动力学模型. 结果表明,聚合物单体中GMA含量对硼吸附量的影响较大,此类树脂吸附硼具有选择性高、吸附容量高、吸附速度快、易于脱附的优点,吸附动力学模型符合颗粒扩散模型.
A novel boron-specific chelating resin was synthesized by the functionalization of poly(glycidyl methacrylate-co-trimethylolpropane trimethacrylate) [poly(GMA-co-TRIM)] with N-methyl-D-glucamine. The structures of polymer matrix, resin, and boron-loaded resin were confirmed by infrared spectroscopy. The behavior of the resulting resin in adsorption of boron from salt lake brine was investigated. The results show that the properties of polymer matrixes especially the GMA molar fraction in polymers have strong impact on the uptake capacity of boron. The resin exhibits high selectivity, large uptake capacity and high adsorption rate towards boron in salt lake brine. The maximum uptake capacity of boron reaches 0.6 mmol/g. Boron can be eluted thoroughly from the resin by 1.0 mol/L hydrochloric acid. The adsorption kinetics is well explained by a particle diffusion model.
出处
《过程工程学报》
EI
CAS
CSCD
北大核心
2004年第6期502-507,共6页
The Chinese Journal of Process Engineering
基金
国家自然科学基金资助项目(编号:20276075)
2002-2003年度中国科学院拜耳启动基金资助项目
关键词
硼螯合树脂
功能化
盐湖卤水
吸附
boron-specific chelating resin
functionalization
salt lake brine
adsorption
