提取剂的离子特异性沉使稀土的分离和废水的修复从溶剂提取关键元素的稀土和废水的修复
Pan Sun1, Dapeng Jing2, Daniel B Durham3
1Ames National Laboratory, Iowa State University, Ames, Iowa 50011, United States.
Environmental science & technology
|February 20, 2026
概括
这项研究引入了一种新的联体介导沉方法,用于回收稀土元素 (REE) 并净化从溶剂提取中产生的废水. 该方法可实现高效的REE回收和提取剂循环利用,促进可持续的资源管理.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 对稀土元素 (REE) 的需求不断增长,需要从电子废物等来源进行可持续的回收.
- 溶剂提取是一种关键的REE分离方法,由于提取剂溶解在废水中,导致环境问题.
- 目前的废水处理方法对来自溶剂提取的持久有机污染物无效.
研究的目的:
- 制定一个可持续的战略,同时利用REE和从工业废水中去除提取剂.
- 研究用于选择性REE分离的联体介导沉机制.
- 为了实现有效回收溶解的提取剂,创建一个闭环系统.
主要方法:
- 用联体介导沉来选择性地沉 REEs.
- 用光谱和显微技术 (FTIR,EDS,XPS,EXAFS,SAXS) 来阐明降水机制.
- 适用于来自- (Sm-Co) 和-铁- (NdFeB) 磁铁的浸出物.
主要成果:
- 从废水中选择性沉可再生能源,留下溶液中的过渡金属.
- 离子特异性沉机制和金属离子协调的阐明.
- 证明了沉提取剂的有效回收和再利用.
- 成功应用于混合磁性液,在温和条件下实现高REE回收.
结论:
- 联体介导沉为REE回收和废水净化提供了一个可持续的闭环解决方案.
- 这种方法提高了资源效率,并减少了REE分离过程对环境的影响.
- 这种方法是可扩展的,并且对工业应用具有成本效益.
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