使用蛋废弃物石作为稀土元素回收的吸收剂
Rémi Rateau1, Melanie Maddin1, Adrienn M Szucs1
1Discipline of Geology, School of Natural Sciences, Trinity College Dublin, the University of Dublin, Museum Building, College Green, Dublin D02 PN40, Ireland.
ACS omega
|June 24, 2024
概括
蛋废物可以从水中捕获稀土元素 (REE). 在更高的温度下,蛋作为模板,形成有价值的REE矿物质,帮助绿色能源转型.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 地质化学 地质化学
背景情况:
- 绿色能源转型依赖于稀土元素 (REE),用于电动汽车和风力轮机等技术.
- 目前的REE提取方法对环境有害,化学密集.
- 迫切需要可持续的REE捕获和分离替代方案.
研究的目的:
- 调查使用废弃蛋作为可再生能源捕获和分离的可持续吸收剂的潜力.
- 在不同温度下在REE的存在下探索蛋石的化学转化.
主要方法:
- 蛋石被暴露在多重REE溶液 (La,Nd,Dy) 中,温度在25至205°C之间,长达3个月.
- 使用分析技术对卵结构内的REE扩散和矿物沉的描述.
主要成果:
- REE通过有机矩阵路径和晶体边界扩散到蛋石灰石中.
- 在90°C时,REE碳酸球体 (kozoite) 沉在石表面上.
- 在更高的温度下 (165-205°C),蛋石溶解,并被kozoite取代,后者进一步转化为基石.
结论:
- 蛋废物显示了REE吸收的潜力:在较低温度下作为吸附剂/吸附剂,在较高温度下作为REE矿物沉的模板.
- 本研究强调了一种新的,低成本和可持续的REE回收方法,为绿色能源领域的循环经济原则做出贡献.
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