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Recycled Battery Separators as Low-cost, Selective, and Reusable Adsorbents for Methylene Blue
Summary
Researchers repurposed spent lithium-ion battery separators as sorbents for the textile dye methylene blue, finding that electrolyte exposure during battery use introduces polar surface groups that substantially enhance dye uptake, and that the separators can be regenerated repeatedly—turning a waste stream into a functional water-treatment material.
Recycled lithium-ion battery separators function as effective, regenerable sorbents for methylene blue (MB). Electrolyte exposure “activates” the polyethylene surface—introducing polar/anionic functionalities that enhance uptake relative to pristine-like regions. Equilibrium ...