Organic oxalate as leachant and precipitant for the recovery of valuable metals from spent lithium-ion batteries

Journal Article · Wed Aug 15 00:00:00 EDT 2012 · Waste Management

OSTI ID:21613004

Liang, Sun ^[1]

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1. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083 (China)

Graphical abstract: Display Omitted Highlights: Black-Right-Pointing-Pointer Vacuum pyrolysis as a pretreatment was used to separate cathode material from aluminum foils. Black-Right-Pointing-Pointer Cobalt and lithium can be leached using oxalate while cobalt can be directly precipitated as cobalt oxalate. Black-Right-Pointing-Pointer Cobalt and lithium can be separated efficiently from each other only in the oxalate leaching process. Black-Right-Pointing-Pointer High reaction efficiency of LiCoO{sub 2} was obtained with oxalate. - Abstract: Spent lithium-ion batteries containing lots of strategic resources such as cobalt and lithium are considered as an attractive secondary resource. In this work, an environmentally compatible process based on vacuum pyrolysis, oxalate leaching and precipitation is applied to recover cobalt and lithium from spent lithium-ion batteries. Oxalate is introduced as leaching reagent meanwhile as precipitant which leaches and precipitates cobalt from LiCoO{sub 2} and CoO directly as CoC{sub 2}O{sub 4}{center_dot}2H{sub 2}O with 1.0 M oxalate solution at 80 Degree-Sign C and solid/liquid ratio of 50 g L{sup -1} for 120 min. The reaction efficiency of more than 98% of LiCoO{sub 2} can be achieved and cobalt and lithium can also be separated efficiently during the hydrometallurgical process. The combined process is simple and adequate for the recovery of valuable metals from spent lithium-ion batteries.

• OSTI ID: 21613004
• Journal Information: Waste Management, Vol. 32, Issue 8; Other Information: DOI: 10.1016/j.wasman.2012.03.027; PII: S0956-053X(12)00138-9; Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0956-053X
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ALUMINIUM
CATHODES
COBALT
COBALT OXIDES
EFFICIENCY
ELECTRIC BATTERIES
FOILS
HYDROMETALLURGY
LEACHING
LITHIUM
LITHIUM IONS
OXALATES
PRECIPITATION
PYROLYSIS
REAGENTS
ALKALI METALS
CARBOXYLIC ACID SALTS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTIONS
COBALT COMPOUNDS
DECOMPOSITION
DISSOLUTION
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
ENERGY STORAGE SYSTEMS
ENERGY SYSTEMS
EXTRACTIVE METALLURGY
IONS
METALLURGY
METALS
OXIDES
OXYGEN COMPOUNDS
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS