Cited by 346Extraction and Separation ProcessesMetal Extraction and BioleachingRecycling and Waste Management Techniques

A review on the recycling of spent lithium-ion batteries (LIBs) by the bioleaching approach

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Roy, Joseph Jegan, Cao, Bin, Madhavi, Srinivasan·2021·Chemosphere

Abstract

This review discusses the latest trend in recovering valuable metals from spent lithium-ion batteries (LIBs) to meet the technological world's critical metal demands. Spent LIBs are a secondary source of valuable metals such as Li (5%-7%), Ni (5%-10%), Co (5%-25%), Mn (5-11%), and non-metal graphite. Recycling is essential for the battery industry to extract valuable critical metals from secondary sources to develop new and novel high-tech LIBs for various applications such as eco-friendly technologies, renewable energy, emission-free electric vehicles, and energy-saving lightings. LIB waste is currently undergoing high-temperature pyrometallurgical or hydrometallurgical processes to recover valuable metals, and these processes have proven to be successful and feasible. These methods, however, are not preferable due to the difficulties in controlling the process, secondary waste produced, high operational cost, and high risk of scaling up. Biotechnological approaches can be promising alternatives to pyrometallurgical and hydrometallurgical technologies in metal recovery from LIB waste. Microbiological metal dissolution or bioleaching has gained popularity for metal extraction from ores, concentrates, and recycled or residual materials in recent years. This technology is eco-friendly, safe to handle, and reduces operating costs and energy demands. The pre-treatment process (material preparation), microorganisms used in the bioleaching of LIBs, factors influencing the bioleaching process, methods of enhancing the leaching efficiency, regeneration of electrode materials, and future aspects have been discussed in detail.

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Crossref · 10.1016/j.chemosphere.2021.130944

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Authors
Roy, J. J., Cao, B., & Madhavi, S.
Affiliations
Nanyang Technological University (SG)
Corresponding author
  • Roy, Joseph Jegan
  • Cao, Bin
Venue
Chemosphere
Publisher
Elsevier BV
Published
2021-11
Volume
282
Pages
130944
ISSN
0045-6535 (ISSN-L)
OpenAlex
W3164213697
Cited by
346
References
146
Citations by year
2026: 54 · 2025: 87 · 2024: 84 · 2023: 73 · 2022: 38 · 2021: 10
FWCI
4.32
Type
journal article
Language
en
Open access
Locations
  • Chemosphere (publishedVersion)
  • PubMed (publishedVersion)
  • DR-NTU (Nanyang Technological University) (submittedVersion)
Funders
  • National Research Foundation of Singapore
  • Government of Singapore Ministry of National Development
  • National Environment Agency
Topics
  • Physical Sciences › Engineering › Mechanical Engineering › Extraction and Separation Processes
  • Physical Sciences › Engineering › Biomedical Engineering › Metal Extraction and Bioleaching
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Recycling and Waste Management Techniques
Keywords
spent lithium-ion batteries, battery recycling, bioleaching, critical metal recovery, lithium recovery, nickel recovery, cobalt recovery, manganese recovery, graphite recovery
MeSH terms
Electrodes, Lithium, Metals, Electric Power Supplies, Recycling

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