A multifunctional strategy: Lithium recovery and chlorine fixation via co-pyrolysis of spent lithium-ion batteries and chlorinated waste plastics

IF 8.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL Separation and Purification Technology Pub Date : 2025-01-13 DOI:10.1016/j.seppur.2025.131620
Wenxin Xia, Biao Ma, Songwen Xiao, Tonglin Tian, Jiajia Huang, Wenhua Xu, Dongfu Liu, Guoxing Ren
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Abstract

Both lithium-ion batteries (LIBs) and chlorinated plastics are playing an extremely important role in our lives and leading to severe environmental issues when they reach end-of-life. In this work, a novel method to synchronously recover lithium from the spent LIBs and fix Cl from chlorinated waste plastics was proposed via co-pyrolysis and water leaching. The Li in the spent NCM LIBs was converted into soluble Li2CO3 and LiCl after the pyrolysis reduction, while Co, Ni, and Mn in the NCM were transformed into insoluble oxide or metal. Meanwhile, the Cl in the chlorinated plastics can be fixed and recovered in the form of LiCl, which avoids the emission of the pollutants containing Cl. Under optimal conditions, the recovery efficiency of Li was 88.55 %, and the fixing ration of Cl in the chlorinated plastics reached 91.27 %. The novel method is quite promising owing to the fact that it can also be extended to treat various chlorinated waste plastics.

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来源期刊
Separation and Purification Technology
Separation and Purification Technology 工程技术-工程:化工
CiteScore
14.00
自引率
12.80%
发文量
2347
审稿时长
43 days
期刊介绍: Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.
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