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›› 2004, Vol. 4 ›› Issue (6): 502-507.

• 反应与分离 • 上一篇    下一篇

新型硼螯合树脂的合成及其对盐湖卤水中硼的吸附

王丽娜,齐涛,李会泉,张懿   

  1. 中国科学院过程工程研究所绿色过程与工程重点实验室
  • 出版日期:2004-12-20 发布日期:2004-12-20

Synthesis of a Novel Boron-specific Chelating Resin an Its Adsorption to Boron from Salt Lake Brine

WANG Li-na,QI Tao,LI Hui-quan,ZHANG Yi   

  1. Institute of Process Engineering, Chinese Academy of Sciences
  • Online:2004-12-20 Published:2004-12-20

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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.

关键词: 硼螯合树脂, 功能化, 盐湖卤水, 吸附

Abstract: 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.

Key words: boron-specific chelating resin, functionalization, salt lake brine, adsorption