准备基托桑中孔膜/合物复合物,通过在基板上构建孔隙结构来有效选择性吸附稀土离子溶液中的Al(III)
Weiquan Yuan1, Jingzhong Kuang2, Haixiang Hu1
1School of Resources and Architectural Engineering, GanNan University of Science and Technology, Ganzhou 341000, China; Key Laboratory of Mine Geological Disaster Prevention and Control and Ecological Restoration, Ganzhou 341000, China.
International journal of biological macromolecules
|November 23, 2023
概括
一种新的复合材料吸附剂,Hal-H-2CS,有效地从稀土溶液中去除离子 (Al(III)). 这种材料具有很高的选择性和Al ((III) 除去能力,为净化过程提供了一个有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 吸附科学 吸附科学
背景情况:
- 从稀土溶液中选择性去除杂质 (Al(III)) 是一个重大挑战.
- 现有的方法往往缺乏Al (III) 分离的效率和选择性.
研究的目的:
- 开发一种用于从稀土离子溶液中选择性吸附Al (III) 的新型复合材料.
- 研究开发材料的吸附特性和机制.
主要方法:
- 通过化和酸性溶解制备化基质 (Hal-650-H).
- 在化体上制造出一种酸盐中孔膜,以形成复合物 (Hal-H-2CS).
- 在各种条件和二元混合物中对Al (III) 的选择性吸附性质的评估.
主要成果:
- 复合物 (Hal-H-2CS) 在广泛的pH范围内对Al (III) 具有显著的选择性.
- 对于Al (III) 的最大吸附能力达到106mg/g,而对于La (III) 的吸附能力低 (1.41mg/g) 在pH值为4.0.
- 吸附剂表现出优异的再生和结构稳定性,这是由于协同效应.
结论:
- 开发的Hal-H-2CS复合物显示出高效率和选择性,用于Al (III) 的去除.
- 基托和化之间的协同相互作用有助于优越的吸附性能.
- 这项研究提出了一种新的策略,用于设计有效的吸附剂,用于Al (III) 净化.
相关概念视频
Extraction: Advanced Methods
455
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
455
Ion-Exchange Chromatography
536
Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
536
Ion Exchange
595
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
595


