Liquid–liquid extraction is an indirect separation technique requiring solvent regeneration, and if a back-extraction is needed, it typically reduces the concentration. Now, using an electrochemical reaction, the concentration can be pumped up to 16 times the feed concentration.
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Schuur, B. Electrochemical concentration pumping in liquid–liquid extractions. Nat Chem Eng 1, 277–278 (2024). https://doi.org/10.1038/s44286-024-00053-1
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DOI: https://doi.org/10.1038/s44286-024-00053-1