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10.1016_j.chemosphere.2024.141674.pdf (7.58 MB)

Ion-imprinted membranes for lithium recovery: A review

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submitted on 2024-03-27, 07:31 and posted on 2024-03-27, 07:31 authored by Sifani Zavahir, Najamus Sahar Riyaz, Tasneem Elmakki, Haseeb Tariq, Zubair Ahmad, Yuan Chen, Hyunwoong Park, Yeek-Chia Ho, Ho Kyong Shon, Dong Suk Han

This review critically examines the effectiveness of ion-imprinted membranes (IIMs) in selectively recovering lithium (Li) from challenging sources such as seawater and brine. These membranes feature customized binding sites that specifically target Li ions, enabling selective separation from other ions, thanks to cavities shaped with crown ether or calixarene for improved selectivity. The review thoroughly investigates the application of IIMs in Li extraction, covering extensive sections on 12-crown-4 ether (a fundamental crown ether for Li), its modifications, calixarenes, and other materials for creating imprinting sites. It evaluates these systems against several criteria, including the source solution's complexity, Li+ concentration, operational pH, selectivity, and membrane's ability for regeneration and repeated use. This evaluation places IIMs as a leading-edge technology for Li extraction, surpassing traditional methods like ion-sieves, particularly in high Mg2+/Li+ ratio brines. It also highlights the developmental challenges of IIMs, focusing on optimizing adsorption, maintaining selectivity across varied ionic solutions, and enhancing permselectivity. The review reveals that while the bulk of research is still exploratory, only a limited portion has progressed to detailed lab verification, indicating that the application of IIMs in Li+ recovery is still at an embryonic stage, with no instances of pilot-scale trials reported. This thorough review elucidates the potential of IIMs in Li recovery, cataloging advancements, pinpointing challenges, and suggesting directions for forthcoming research endeavors. This informative synthesis serves as a valuable resource for both the scientific community and industry professionals navigating this evolving field.

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Published in: Chemosphere
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Open Access funding provided by the Qatar National Library.



  • English



Publication Year

  • 2024

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This Item is licensed under the Creative Commons Attribution 4.0 International License.

Institution affiliated with

  • Qatar University
  • Center for Advanced Materials - QU
  • Qatar University Young Scientists Center - QU
  • College of Engineering - QU
  • Gas Processing Center - CENG

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