Optimized Lithium Recovery from Brines by using an Electrochemical Ion‐Pumping Process Based on λ‐MnO2 and Nickel Hexacyanoferrate
Abstract
Currently, Li is mainly produced from Li‐rich brines through the lime–soda evaporation process, which requires a long time and several purification steps, and has a severe environmental impact. Herein, ion‐pumping technology based on λ‐MnO 2 as lithium‐capturing electrode is presented. The method has high lithium selectivity and can increase the lithium purity from 4.1 to 96 % in a single step. In addition, the time required to achieve the target lithium concentration (5000 ppm) can be reduced from the 12–14 months needed for the lime–soda evaporation process to less than 7.4 h. The small volume of water required, the absence of any chemical reactant, the recyclability of the used electrodes, and the possibility to combine ion‐pumping technology with renewable energy sources makes this process a potential ecofriendly alternative to the current lithium‐recovery methods.
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The ion-pumping process developed by Trócoli et al. requires no chemical reactants, has recyclable electrodes, and requires only a small volume of water.
“No chemical reactants are required, the electrodes are recyclable, and most importantly, only a small volume of water is required.”
From A review of technologies for direct lithium extraction from low Li+ concentration aqueous solutions (2022) · cites this paper as Trócoli et al. (2017)
Trócoli et al. (2017) developed a promising ion-pumping process that employs λ-MnO2/NiHCF working/counter electrodes for Li+ recovery.
“In this vein, Trócoli et al. (2017) have developed a promising ion-pumping process that employs a λ -MnO2/NiHCF working/counter electrodes for Li + recovery.”
From A review of technologies for direct lithium extraction from low Li+ concentration aqueous solutions (2022) · cites this paper as Trócoli et al. (2017)
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References 18 · Cited by 136
- Authors
- Trócoli, R., Erinmwingbovo, C., & La Mantia, F.
- Affiliations
- Ruhr University Bochum (DE)
- Semiconductor & Energy Conversion, Center for Electrochemical Sciences (CES) Ruhr-Universität Bochum 44780 Bochum Germany
- Corresponding author
- Trócoli, Rafael
- Venue
- ChemElectroChem
- Publisher
- Wiley
- Published
- 2016-10-20
- Volume
- 4
- Issue
- 1
- Pages
- 143-149
- ISSN
- 2196-0216 (ISSN-L)
- OpenAlex
- W2538576125
- Cited by
- 136
- References
- 18
- Citations by year
- 2026: 12 · 2025: 16 · 2024: 19 · 2023: 16 · 2022: 14 · 2021: 15 · 2020: 20 · 2019: 12 · 2018: 5 · 2017: 7
- FWCI
- 7.12
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- ChemElectroChem (publishedVersion)
- Funders
- Federal Ministry of Education and Research (BMBF (FKZ 03K3005)
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Extraction and Separation Processes
- Physical Sciences › Engineering › Biomedical Engineering › Membrane-based Ion Separation Techniques
- Physical Sciences › Chemical Engineering › Fluid Flow and Transfer Processes › Molten salt chemistry and electrochemical processes
- Keywords
- lithium recovery, lithium-rich brines, λ-MnO2, nickel hexacyanoferrate, lithium purity, electrode recyclability, renewable energy
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