通过酸介质从基石中出稀土元素:通过中央复合材料设计和动力学研究进行优化
Aditya Ranjan Ray1, Bankim Chandra Tripathy2, Sujata Mishra3
1Department of Chemistry, Institute of Technical Education and Research, Siksha 'O' Anusandhan Deemed to Be University, Khandagiri Square, Bhubaneswar, 751030, Odisha, India.
Environmental science and pollution research international
|January 24, 2025
概括
从石废物中回收稀土元素至关重要. 优化酸液实现了90.11%的REE溶解,为这些关键材料提供了一个环保的解决方案.
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:
- 稀土元素 (REEs) 面临供应限制,原因是需求高和资源有限.
- 石 (PG) 是大型工业废物,含有有价值的可再生能源,并对环境处置提出挑战.
- 开发用于REE回收的二次来源对于技术应用至关重要.
研究的目的:
- 为了优化从石灰废物中回收REE的漏参数.
- 用酸确定REE漏的动力学.
- 评估酸作为REE提取的环保替代品.
主要方法:
- 使用了响应表面方法 (RSM) 与中央复合设计 (CCD).
- 研究了酸度,温度和浸出时间的影响.
- 应用了收缩球体模型来阐明漏动力学.
主要成果:
- 酸度增加和浸出时间显著提高了REE溶解.
- 在最佳条件下 (2mol/L酸,343K,180分钟) 产生了90.11%的REE溶解效率.
- 泄漏动力学被发现是扩散控制的.
结论:
- 酸可以在适度条件下从石废物中有效地回收REE.
- 这项研究提供了一种可持续的方法,用于从工业副产品中获得关键的REEs.
- 优化漏协议对于确保技术进步的REEs至关重要.
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