Kinetic optimization in green metal recovery: Citric acid vs glycine for sustainable Li-ion battery recycling
Year: 2025
Type: article
Abstract: Due to the natural depletion and potential toxicity of some metals in lithium ion batteries (LIB), it is getting important to recover valuable metals such as Li and Co from spent LIBs. This study used citric acid or glycine to leach the valuable metals from cathode materials of these spent LIBs such as lithium iron phosphate (LFP) or lithium manganese oxide (LMO) batteries. The effects of concentrations of the citric acid or glycine, solid-liquid ratio, and H 2 O 2 on the leaching rate of valuable metals were investigated by a batch experiment. The leached Mn 2 + and Li + in the solution were recovered effectively by precipitation of MnO 2 and Li 3 PO 4 by KMnO 4 and Na 3 PO 4 with the recovery rate of Mn (95.02 % from LMO) and Li (94.23 %, and 95.29 % from LFP or LMO, respectively). Moreover, citric acid or glycine are shown to be acid leachants for recovering metals from spent LIBs.
Authors: Yanhao Zhang, Yuchen Wang, Zile Han, Meiying Jin, Xinqi Li, Yi Li, Xianghui Kong, Zhibin Zhang, Xu Zhang
Institution: Shandong Jianzhu University
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,650
Awards: G4269588132, G6905292822, G8200141373
OpenAlex ID: W4412655992