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相关概念视频

Extraction: Advanced Methods00:56

Extraction: Advanced Methods

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 formed in...

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相关实验视频

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Detection and Recovery of Palladium, Gold and Cobalt Metals from the Urban Mine Using Novel Sensors/Adsorbents Designated with Nanoscale Wagon-wheel-shaped Pores
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聚合物材料用于稀土元素的回收.

Hongtao Zhang1, Yongfeng Gao2

  • 1School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining 810008, China.

Gels (Basel, Switzerland)
|October 27, 2023
PubMed
概括

稀土元素 (REEs) 的可持续回收至关重要. 聚合物材料为REEs提供环保的吸附解决方案,解决先进技术中的供应链和环境问题.

科学领域:

  • 材料科学 材料科学 材料科学
  • 环境科学 环境科学
  • 化学工程是化学工程的重要组成部分.

背景情况:

  • 稀土元素对于电子和可再生能源等先进技术至关重要.
  • 传统的REE采矿面临供应链挑战和严重的环境影响.
  • 迫切需要可持续和高效的REE回收方法.

研究的目的:

  • 为稀土元素回收提供聚合物材料的全面概述.
  • 检查各种基于聚合物的回收技术的优势,挑战和进步.
  • 突出聚合物在开发环保和可扩展的废弃物回收解决方案方面的潜力.

主要方法:

  • 对聚合物树脂用于REEs吸附的审查.
  • 对聚合物膜进行选择性废弃物分离的分析.
  • 研究可再生能源回收的交联聚合物网络和纳米复合物聚合物.

主要成果:

  • 聚合物材料表现出选择性吸附,多功能性,可扩展性和可再生性的REEs回收.
  • 不同的聚合物类型 (树脂,膜,网络,纳米复合材料) 提供独特的好处,并面临特定的挑战.
  • 目前正在进行的研究重点是提高聚合物可再生能源回收系统的选择性,稳定性和可扩展性.
关键词:
相互连接的聚合物网络.纳米复合物聚合物的纳米复合物.聚合物膜 聚合物膜聚合物材料是一种聚合物材料.聚合物树脂是一种聚合物树脂.稀土元素 (REE) 是一种稀土元素.

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结论:

  • 聚合物材料为可持续和高效的稀土元素回收提供了一个有希望的途径.
  • 解决选择性,稳定性和可扩展性的挑战是广泛采用的关键.
  • 在聚合物材料的创新可以减少对危险化学品的依赖,并最大限度地减少废物在REEs回收.