| Title | Valorization of waste NiMH battery through recovery of critical rare earth metal: A simple recycling process for the circular economy |
|---|---|
| ID_Doc | 4419 |
| Authors | Ahn, NK; Shim, HW; Kim, DW; Swain, B |
| Title | Valorization of waste NiMH battery through recovery of critical rare earth metal: A simple recycling process for the circular economy |
| Year | 2020 |
| Published | |
| Abstract | The process flowsheet consists of three main circuits, i.e., metal extraction by acid leaching, critical rare earth metal (REM) recovery from leach liquor and pure Co/Ni recovery by solvent extraction. Quantitative metal extraction using 1 M H2SO4, pulp density of 25 g/L at 90 degrees C from waste NiMH battery was achieved. From leach liquor using 10 M NaOH, at pH 1.8, more than 99% REM was precipitated out and isolated through calcination at 600 degrees C. Undesired metals like Mn, Al, Zn, and Fe were scrubbed out from the leach liquor using 0. 7 M D2EPHA at the equilibrium pH of 2.30. From the scrubbed raffinate Co and Ni was separated using 0.5 M Cyanex 272 at pH 4.70 through solvent extraction. At pH 4.70 Co was completely extracted from solution leaving Ni in solution, which can be recovered completely. From Co loaded Cyanex 272, the Co was stripped by 1 M H2SO4 and regenerated Cyanex 272 can be reused and close the loop. Similarly, the undesired metal loaded D2EPHA can be regenerated and reused and close the loop. As the process is close-loop process recovers critical REMs, Co, and Ni, the valorization process efficiently addresses the circular economy and recycling challenges associated with waste NiMH battery. (C) 2020 Elsevier Ltd. All rights reserved. |
Similar Articles
| ID | Score | Article |
|---|---|---|
24051
|
Ahn, NK; Swain, B; Shim, HW; Kim, DW Recovery of Rare Earth Oxide from Waste NiMH Batteries by Simple Wet Chemical Valorization Process(2019)Metals, 9, 11 | |
| 26047
|
Agarwal, V; Khalid, MK; Porvali, A; Wilson, BP; Lundström, M Recycling of spent NiMH batteries: Integration of battery leach solution into primary Ni production using solvent extraction(2019) | |
| 24126
|
Tang, YC; Wang, JZ; Shen, YH Separation of Valuable Metals in The Recycling of Lithium Batteries via Solvent Extraction(2023)Minerals, 13, 2 | |
| 25565
|
Liu, FP; Peng, C; Porvali, A; Wang, ZL; Wilson, BP; Lundström, M Synergistic Recovery of Valuable Metals from Spent Nickel-Metal Hydride Batteries and Lithium-Ion Batteries(2019)Acs Sustainable Chemistry & Engineering, 7, 19 | |
| 24990
|
Porvali, A; Ojanen, S; Wilson, BP; Serna-Guerrero, R; Lundstrom, M Nickel Metal Hydride Battery Waste: Mechano-hydrometallurgical Experimental Study on Recycling Aspects(2020)Journal Of Sustainable Metallurgy, 6, 1 | |
| 21304
|
Vargas, SJR; Schaeffer, N; Souza, JC; da Silva, LHM; Hespanhol, MC Green separation of lanthanum, cerium and nickel from waste nickel metal hydride battery(2021) | |
| 23987
|
Pavón, S; Kaiser, D; Bertau, M Recovery of Al, Co, Cu, Fe, Mn, and Ni from spent LIBs after Li selective separation by COOL-Process - Part 2: Solvent Extraction from Sulphate Leaching Solution(2021)Chemie Ingenieur Technik, 93, 11 | |
| 20216
|
Dushyantha, N; Kuruppu, GN; Nanayakkara, CJ; Ratnayake, AS The Role of Permanent Magnets, Lighting Phosphors, and Nickel-Metal Hydride (NiMH) Batteries as a Future Source of Rare Earth Elements (REEs): Urban Mining Through Circular Economy(2024)Mining Metallurgy & Exploration, 41, 1 | |
| 24883
|
Rinne, M; Elomaa, H; Porvali, A; Lundström, M Simulation-based life cycle assessment for hydrometallurgical recycling of mixed LIB and NiMH waste(2021) | |
| 33556
|
Sun, Z; Cao, H; Xiao, Y; Sietsma, J; Jin, W; Agterhuis, H; Yang, Y Toward Sustainability for Recovery of Critical Metals from Electronic Waste: The Hydrochemistry Processes(2017)Acs Sustainable Chemistry & Engineering, 5.0, 1 |