使用Acidithiobacillus thiooxidans从稀土尾矿中有效地回收稀土元素:机制和可行性
Yuyu Zhang1, Rongting Yang1, Wanling Cai2
1Fujian Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, Fujian Province, China.
Bioresource technology
|January 14, 2026
概括
这项研究表明,Acidithiobacillus thiooxidans可以有效地利用生物炼从废弃物中回收稀土元素 (98.1%). 该过程依赖于酸溶解和微生物分泌物进行稳定.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 材料科学 材料科学 材料科学
背景情况:
- 稀土元素 (REE) 的回收对可持续性至关重要.
- 像尾矿这样的二次资源未得到充分利用.
- 开发高效和环保的提取方法至关重要.
研究的目的:
- 通过使用Acidithiobacillus thiooxidans (A. thiooxidans) 来研究稀土尾矿 (RET) 中的REEs的生物溶解.
- 为了阐明驱动REE提取和稳定在生物溶解过程中的机制.
主要方法:
- 在RET.上使用A. thiooxidans进行生物化实验.
- 监测pH值变化和微观分析 (SEM).
- 谱分析 (3D-EEM,FTIR) 用于表征微生物分泌物和REE相互作用.
主要成果:
- 在14天内从0.5% (w/v) RET获得98.1%的REE提取效率.
- 确定硫氧化诱导的酸溶解是主要的漏驱动因素.
- 证明细胞外聚合物物质 (EPS) 通过复杂化稳定溶解的REEs.
结论:
- 甲基氧化剂有效地从RET中生物除REEs.
- 酸溶解是主要的机制,EPS扮演的第二个稳定作用.
- 这种生物溶解方法提供了一种可行的方法来从二次资源中回收REE.
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