A green and efficient process for the stepwise extraction of Cu, Ni, Co, Mn, and Li from hazardous waste with a novel solvent extraction system of D2EHPA-NNPA

As the production of electric vehicles and lithium-ion batteries continues to rise, concerns over resource scarcity and supply shortages of critical metals, including Cu, Ni, Co, Mn, and Li, have become increasingly urgent. To address these concerns and promote environmental protection, there is a g...

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Bibliographic Details
Published in:Green chemistry : an international journal and green chemistry resource : GC 2023-11, Vol.25 (23), p.12-132
Main Authors: Zheng, Qiyuan, Zeng, Li, Cao, Zuoying, Wu, Shengxi, Li, Qinggang, Wang, Mingyu, Guan, Wenjuan, Zhang, Guiqing
Format: Article
Language:English
Subjects:
Circular economy
Contamination
Copper
Electric vehicles
Environmental protection
Green chemistry
Hazardous wastes
Hydrometallurgy
Industrial applications
Industrial wastes
Industrial wastewater
Lithium
Lithium-ion batteries
Manganese
Metals
Nickel
Rechargeable batteries
Solvent extraction
Solvent extraction processes
Solvents
Strategic materials
Washing
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Summary:As the production of electric vehicles and lithium-ion batteries continues to rise, concerns over resource scarcity and supply shortages of critical metals, including Cu, Ni, Co, Mn, and Li, have become increasingly urgent. To address these concerns and promote environmental protection, there is a growing demand for the recycling of hazardous waste containing these critical metals as secondary resources. Therefore, this paper proposes a novel synergistic solvent extraction system of D2EHPA-NNPA, which fills a gap in the lack of a suitable extraction system for the hydrometallurgical industry of secondary resources containing Cu, Ni, Co, Mn, and Li. With the specific extraction sequence of D2EHPA-NNPA, a novel process has been designed and proposed for the stepwise extraction of Cu, Ni, Co, Mn, and Li from secondary resources, which significantly simplifies process flows while avoiding cross-contamination of the extractants and the production of industrial wastewater. Furthermore, the proposed "extraction-scrubbing-stripping" process has been investigated from both macroscopic and microscopic perspectives, demonstrating that the novel synergistic solvent extraction system of D2EHPA-NNPA is a viable option for industrial applications to promote a circular economy and achieve sustainability objectives. Schematic structure of D2EHPA and NNPA and the metal extraction pH isotherms of their synergistic extraction system.
ISSN:1463-9262
1463-9270
DOI:10.1039/d3gc03654e