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在离子电池回收的溶剂提取中使用低碳足迹稀释剂

Aboudaye M Ahamed¹, Benjamin Swoboda², Zubin Arora²

¹Université de Lorraine, CNRS, GeoRessources F-54000 Nancy France alexandre.chagnes@univ-lorraine.fr.

|August 4, 2023

概括

这项研究表明,生物源稀释剂,如DEV2063和DEV2139,显著改善了废电池的金属提取. 这些发现使贵金属的低碳足迹溶剂提取工艺成为可能.

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:

溶剂提取对于从使用过的离子电池中回收金属至关重要.
稀释剂的选择对溶剂提取过程的效率和环境足迹产生重大影响.
开发可持续替代石油稀释剂的替代品对于循环经济至关重要.

研究的目的:

调查各种基于石油和生物来源的稀释剂对Cyanex® 272,DEHPA和Acorga® M5640对,,,铜和的提取效率的影响.
评估研究稀释剂对环境的影响,特别是碳足迹.
为了确定NMC黑质量的可持续溶剂提取工艺的最佳稀释剂.

主要方法:

采用三种不同的提取剂 (Cyanex® 272,DEHPA,Acorga® M5640) 与各种基于石油和生物来源的稀释剂进行了提取实验.
分析了稀释剂的物理化学特性 (粘度,点火点,芳香含量).
进行了生命周期评估,以确定每个稀释剂的碳足迹.
评估了金属开采的效率和选择性.

主要成果:

阿科尔加® M5640 没有显著的稀释剂影响或铜的共同提取问题.
稀释剂的性质显著影响了 ((II) 提取通过DEHPA和 ((II) / ((II) 提取通过Cyanex 272.
与以石油为基础的稀释剂相比,从高油 (DEV2063) 和使用过的油 (DEV2139) 中提取的生物源稀释剂的碳足迹较低.
根据提取性能和环境影响,DEV2063和DEV2139被确定为最有前途的稀释剂.

结论:

稀释剂的选择对于优化金属提取效率和溶剂提取过程中的可持续性至关重要.
生物源稀释剂,特别是DEV2063和DEV2139,为传统的石油基稀释剂提供了可行的低碳替代品.
使用DEV2063和DEV2139的可持续溶剂提取流程表可以有效地从消耗的离子电池黑质中回收有价值的金属.

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