用于在强酸性溶液中选择性提取稀土离子的聚酸酸功能化吸附剂的制备
Xue Chen1, Chenyang Wang1, Mao Li1
1Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an , 710069, China.
Mikrochimica acta
|April 16, 2025
概括
一种新的酸盐功能化吸附剂有效地从强酸性溶液中提取稀土元素 (REEs). 这种方法增强了二次资源中的REE回收,促进了更绿色的制造工艺.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 从二次资源中回收稀土元素 (REEs) 是至关重要的,但由于恶劣的酸性条件而具有挑战性.
- 开发有效的吸附剂用于在酸性介质中提取REE对于可持续的资源管理至关重要.
研究的目的:
- 开发和评估一种新型的多酸酸功能化吸附剂,用于从强酸性溶液中高效地提取REE.
- 使用开发的吸附剂,研究REE离子的吸附特性,选择性和回收.
主要方法:
- 容易修改多孔聚烯树脂与三2-氨基乙烯) 胺和甲基二二二).
- 对Ce3+,Nd3+,Gd3+和Dy3+离子的吸附性质 (亲和常数,选择性,回收) 的研究.
- 使用酸/盐效应,热力学和动力学分析吸附机制.
- 应用批量和连续列吸附方法,使用永磁消化溶液模型 (1mol/L HCl).
主要成果:
- 该吸附剂从1mol/L HCl溶液中显示了5个REE离子 (Y3+,Ce3+,Nd3+,Gd3+,Dy3+) 的高回收率 (58.1%至100%).
- 一个模拟的连续列过程提高了REE含量从35.4%到88.9%的化剂.
- 证实了酸盐连接体和REE离子之间的强化相互作用是主要的吸附机制.
结论:
- 开发的吸附剂在恶劣的酸性环境中表现出极好的可再生能源的提取能力.
- 这种吸附剂为废弃物回收提供了一个有前途的解决方案,减少了的消耗,并改善了制造过程的环境足迹.
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