Selective extraction of nickel from acid leach solution of spent lithium-ion batteries using synergistic solvent extraction system consisting of TFCA-4PC

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China Pub Date : 2024-04-01 DOI:10.1016/S1003-6326(24)66473-3

Li-han ZHANG , Zuo-ying CAO , Gui-qing ZHANG , Qing-gang LI , Ming-yu WANG , Wen-juan GUAN , Sheng-xi WU , Qi DENG

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引用次数: 0

Abstract

A synergistic solvent extraction (SSX) system consisting of tung oil-based carboxylic acid (TFCA) and isonicotinic acid ester (4PC) was proposed to selectively extract Ni over Li and Mg from acid leach solutions of spent lithium-ion batteries (LIBs). The SSX system indicates a synergistic effect of Ni which can be mainly attributed to the multiple chelate ring structure formed between TFCA and Ni, therefore resulting in strong selectivity of Ni. With optimal conditions, the extraction of Ni reaches 97.3% in a single stage, while the extractions of Mg and Li are nil and 2.29%, respectively. Further, after scrubbing with 300 mg/L NiSO₄, the loaded organic solution is stripped using 0.2 mol/L H₂SO₄. The strip liquor containing 11.52 g/L Ni and only less than 6 mg/L Li is obtained.

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使用由 TFCA-4PC 组成的协同溶剂萃取系统从废锂离子电池酸浸出液中选择性提取镍

研究人员提出了一种由桐油基羧酸（TFCA）和异烟酸酯（4PC）组成的协同溶剂萃取（SSX）系统，用于从废锂离子电池（LIB）的酸浸出液中选择性地萃取镍而不是锂和镁。SSX 系统对镍具有协同作用，这主要归因于 TFCA 与镍之间形成的多重螯合环结构，因此对镍具有很强的选择性。在最佳条件下，镍的单级萃取率达到 97.3%，而镁和锂的萃取率分别为零和 2.29%。此外，在使用 300 mg/L NiSO4 进行洗涤后，使用 0.2 mol/L H2SO4 对负载有机溶液进行剥离。剥离液中镍的含量为 11.52 g/L，而锂的含量仅小于 6 mg/L。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Transactions of Nonferrous Metals Society of China 工程技术-冶金工程

CiteScore

7.40

自引率

17.80%

发文量

8456

审稿时长

3.6 months

期刊介绍： The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.