Sustainable Approach for Critical Metals Recovery through Hydrometallurgical Processing of Spent Batteries Using Organic Acids

Autor(es)

Martins, Livia Salles ; Rovani, Suzimara ; Botelho Junior, Amilton Barbosa ; Romano Espinosa, Denise Crocce

• Tipo de documento: Artigo Científico
• Fonte: Industrial & Engineering Chemistry Research; v. 62, n. 44, p. 11-pg., 2023-10-24.

Resumo

Recycling is the bottom line to promote the circularity of the materials into the closed loop. Among the Li-ion batteries, the LiCoO2-cathode type is used in a few vehicles but mostly in electric equipment. This study aimed to design a recycling process for LiCoO2-pouch batteries. The entire process was designed using organic acids. The cells were milled and physically separated. Leaching experiments were performed with citric acid. No reducing agent was necessary, and all Co and Li were leached using 1 mol/L of citric acid at 90 degrees C with a solid-liquid ratio of 1/10 for 2 h. Co was separated using oxalic acid at 50 degrees C for 30 min in a Co/oxalic acid molar ratio of 1:2. Resynthesis of the cathode was possible, producing a similar material directly from the leach solution, which opens possibilities for the future. The present study fits SDGs 7, 9, 11, 12, and 13. (AU)

• Processo FAPESP: 21/14842-0 - Elucidação do mecanismo de complexação de organometálicos entre extratantes orgânicos e elementos terras raras
• Beneficiário: Amilton Barbosa Botelho Junior
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 20/00493-0 - Mineração sustentável: recuperação de matérias-primas críticas de baterias usando tecnologias ambientalmente amigáveis
• Beneficiário: Jorge Alberto Soares Tenório
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 19/11866-5 - Desenvolvimento de processos inovadores para recuperação de metais críticos
• Beneficiário: Denise Crocce Romano Espinosa
• Modalidade de apoio: Auxílio à Pesquisa - Temático