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合CO2捕获过程与电化学增强的膜蒸系统用于离子电池回收:节约反应剂和减少环境足迹

Longjie Jiang¹, Lin Chen², Chuqing Cao³

¹College of Environment and Ecology, Jiangsu Open University, Nanjing 210017, China; Jiangsu Engineering and Technology Centre for Ecological and Environmental Protection in Urban and Rural Water Environment Management and Low Carbon Development, Nanjing 210017, China.

|December 18, 2024

概括

回收离子电池 (LIB) 是一个挑战. 这项研究引入了一种新的碳捕获 (CC) 和电化学增强膜蒸 (ECMD) 系统,以高效,高纯度的碳酸回收,对环境产生最小的影响.

科学领域:

材料科学材料科学材料科学
环境工程环境工程
电化学电化学电化学

背景情况:

对离子电池 (LIB) 的需求不断增长,需要可持续的回收方法.
目前的LIB回收在纯度,效率和环境影响方面面临挑战,特别是关于化学品的使用和碳足迹.
开发封闭循环回收过程对于实现碳中和目标至关重要.

研究的目的:

开发一种高纯度碳酸盐 (Li2CO3) 从退役LIB中回收的创新策略.
将碳捕获 (CC) 与电化学增强膜蒸 (ECMD) 系统相结合,以实现高效的LIB液处理.
为零液体排放LIB回收过程建立一个动态平衡模型.

主要方法:

使用电化学增强膜蒸 (ECMD) 系统从人工LiCoO2水中分离Li+/Co2+.
采用了两阶段的工艺:最初分离和的丰富,随后是回收.
开发了一种集成安东尼方程,法拉第定律和两片理论的动态平衡模型,以描述质量转移和转换.

主要成果:

达到超过14000的Li+/Co2+分离因子,产生CoO(OH) 沉物和丰富缩物.
回收的电池级Li2CO3纯度超过99.80重量%,生产产量为234.19g·kW-1·h-1.
通过膜污染和故障分析,证明了高碳捕获效率 (31.89%) 和确认的工艺稳定性.

结论:

结合CC-ECMD系统为LIB回收提供了一种创新和环保的途径.
开发的动态平衡模型验证了长期零液体排放处理的可行性.
这项研究为设计用于电池回收的先进膜工艺,减少电池回收的环境足迹铺平了道路.

关键词:

碳捕获是为了捕获碳.动态平衡模型的动态平衡模型电化学增强膜蒸的蒸方法在Libs的回收利用中.质量转移-转换机制.

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