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Article Dans Une Revue Coordination Chemistry Reviews Année : 2023

On membrane-based approaches for rare earths separation and extraction – Recent developments

Résumé

The current progress in the improvement of membrane materials enlarges the utilizations and necessities for innovative, more efficient, resistant, and highly specialized separation materials. One of the growing areas of the implementation of membrane-based strategies is the selective separation of rare earth elements (REEs). Owing to their high potential and essential meaning in modern industry, demands for raw REEs have increased significantly in the last years. Moreover, considering the fact that isolation of REEs has listened as one of “the seven chemical separation processes that, if improved, would rear great global benefits” their application is emerging. Membrane strategies are gaining popularity in metal separation and wastewater treatment as sustainable green approaches with a simple operation. Many membrane strategies for REEs separation have been developed, but only a few reviews have been found. The main message coming from the literature review is that more light should be shed on the progress and implementation of non-liquid membranes. The previously utilized liquid membranes faced many problems related mainly to the long-term utilization, stability, and extraction yield. As a consequence, the REEs separation processes have moved in the direction of much more durable materials, i.e., non-liquid membrane strategies, in which the carriers are physically or chemically connected with the membrane or porous structure of support. The most significant advantage is the lack of a problem of losing extractant into the aqueous phase. This article aims to: i) review the current membrane-based methods in REEs separation focusing on non-liquid membranes (imprinted, polymer inclusion, nanocomposite, metal-/covalent organic framework membranes), ii) present the considerations of the essential scientific and technical issues, e.g. extraction performances, separation efficiency, REEs transport features, and iii) discuss their transport models and mechanisms as well as membrane stability. © 2023 Elsevier B.V.
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Dates et versions

hal-04226680 , version 1 (26-11-2023)

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Joanna Kujawa, Samer Al-Gharabli, Anthony Szymczyk, Artur P. Terzyk, Slawomir Boncel, et al.. On membrane-based approaches for rare earths separation and extraction – Recent developments. Coordination Chemistry Reviews, 2023, 493, pp.215340. ⟨10.1016/j.ccr.2023.215340⟩. ⟨hal-04226680⟩
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