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Open AccessArticle

Recovery of Cobalt from Spent Lithium-Ion Mobile Phone Batteries Using Liquid–Liquid Extraction

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Departamento de Ingeniería Química, Universidad de Guanajuato, Campus Guanajuato, Noria Alta s/n, Col. Noria Alta, Guanajuato 36050, Mexico
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Departamento de Ingeniería Civil, Universidad de Guanajuato, Campus Guanajuato, Avenida Juárez No. 77, Col. Centro, Guanajuato 36050, Mexico
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Departamento de Materiales y Minerales, Universidad Nacional de Colombia, Sede Medellín, Calle 75 N. 79 A 51 Bloque M17 of 407-05, Medellín 050034, Colombia
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Author to whom correspondence should be addressed.
Batteries 2019, 5(2), 44; https://doi.org/10.3390/batteries5020044
Received: 25 March 2019 / Revised: 13 April 2019 / Accepted: 18 April 2019 / Published: 6 May 2019
(This article belongs to the Special Issue Circular Economy of Batteries Production and Recycling)
The aim of this paper was to propose and test a continuous cobalt recovery process from waste mobile phone batteries. The procedure started with dismantling, crushing, and classifying the materials. A study on leaching with sulfuric acid and hydrogen peroxide was carried out with subsequent selective separation of cobalt by means of liquid–liquid extraction. The best extraction conditions were determined based on a sequence of experiments that consisted of selecting the best extractant for cobalt, then assessing the impact of extractant concentration, pH, and contact time on the extraction yield. With these conditions, an extraction isotherm was obtained and correlated with a mathematical model to define the number of extraction stages for a countercurrent process using the McCabe–Thiele method. Then, a similar study was done for stripping conditions and, as a last step, cobalt electroplating was performed. The proposed process offers a solution for the treatment of these batteries, avoiding potential problems of contamination and risk for living beings, as well as offering an opportunity to recover valuable metal. View Full-Text
Keywords: cobalt; spent lithium batteries; recovery cobalt; spent lithium batteries; recovery
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MDPI and ACS Style

Quintero-Almanza, D.; Gamiño-Arroyo, Z.; Sánchez-Cadena, L.E.; Gómez-Castro, F.I.; Uribe-Ramírez, A.R.; Aguilera-Alvarado, A.F.; Ocampo Carmona, L.M. Recovery of Cobalt from Spent Lithium-Ion Mobile Phone Batteries Using Liquid–Liquid Extraction. Batteries 2019, 5, 44.

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