Recovering critical raw materials from spent lithium ion batteries Ivano Alessandri 1 , A. Cornelio 1,2 , I. Vassalini 1,3 , E. Bontempi 1,2 1 INSTM, Consorzio Interuniversitario per la Scienza e la Tecnologia dei Materiali, UdR Brescia, 2 Dipartimento di Ingegneria Meccanica e Industriale, Università degli Studi di Brescia (Italy), 3 Dipartimento di Ingegneria dell’Informazione,Università degli Studi di Brescia (Italy) Recovery and recycling of critical raw materials (CRMs) are critical factors for sustainable energy transition. Lithium-ion spent batteries (LIBs) may represent a rich source of lithium, cobalt, manganese. To date, the recovery of CRMs from LIBs is mainly based on pyrometallurgical treatments and mineral acid leaching of black mass. However, these strategies and processes are quite energy consuming and not environment-friendly.Here we will present the first results of a project aimed at developing an alternative route for CRMs recovery from LIBs black mass. Our approach is based on a synergistic combination of microwave irradiation of black mass and subsequent extraction with organic acids (e.g. malic acid) obtained from food waste. This method allowed to sequentially recover Li, Co and with efficiency >90% and significantly reduce energy consumption [1] . References 1. A. Fahimi, I. Alessandri, A.Cornelio, P. Frontera, A. Malara, E. Mousa, G. Ye, B. Valentim, E. Bontempi, A microwave- enhanced method able to substitute traditional pyrometallurgy for the future of metals supply from spent lithium-ion batteries , Resource, Conservation and Recycling , Volume 194, 106989,( 2023 )
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