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Meeting 2024 TMS Annual Meeting & Exhibition
Symposium Rare Metal Extraction & Processing
Presentation Title Leaching of Critical Metals from Spent Lithium-ion Battery Using Acidic Organophosphorus Extractant
Author(s) Kurniawan Kurniawan, Sookyung Kim, Hyunju Lee, Mooki Bae , Hongin Kim, Jae-chun Lee
On-Site Speaker (Planned) Kurniawan Kurniawan
Abstract Scope Recycling of cathode material of spent lithium-ion batteries (LIBs) is important for recovering critical metals and protecting the environment. This study thus proposes a sustainable recycling process for cathode material (nickel-cobalt-manganese/NCM chemistry) via leaching with an acidic organophosphorus extractant, di-(2-ethylhexyl)phosphoric acid/D2EHPA and copper (current collector) as the reducing agent. The effects of leaching parameters, including stirring speed, Cu amount, D2EHPA concentration, temperature and time were investigated. The leached metals on the loaded D2EHPA were recovered via stripping using pH-controlled aqueous solutions. Using D2EHPA for leaching allows process intensification because it integrates leaching and solvent extraction (SX) in one-stage operation. It also reduces the consumption of aqueous solutions, thereby minimizing wastewater generation.
Proceedings Inclusion? Planned:
Keywords Other, Other, Other

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