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Microplastic extraction from industrial wastewater using a ring-shaped molybdenum-blue POM-ionic liquid-based magnetic biochar
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Synergistic Sustainable Strategies for Microplastic Pollution Eradication by Hedgehog − Shaped Polyoxometalate − Ionic Liquids Supported Magnetic Biochar
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Researchers engineered two magnetic biochar adsorbents incorporating hedgehog-shaped polyoxometalate ionic liquids that achieved 100% removal efficiency for microplastics ranging from 1–12.5 µm from both industrial and laboratory wastewater, remaining stable across five reuse cycles. This highly efficient, magnetically separable material offers a scalable approach to removing microplastics from wastewater effluent before they enter waterways and the broader environment.
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Researchers compared four filtration materials for removing polystyrene microplastics from water, finding that iron-modified biochar achieved 99.99% removal efficiency within six hours — far outperforming raw biochar (56%), coconut fiber (44%), and sand (29%) — with higher pyrolysis temperature and iron modification both significantly enhancing adsorption capacity.
Transforming water treatment: Polyoxometalate-Ionic liquid magnetic nanocomposites for microplastic-free industrial effluents
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Scientists have created a magnetic, sponge-like material that can pull 100% of microplastics out of industrial wastewater, then be easily removed with a magnet and reused up to five times. Since microplastics from factories often end up in rivers, drinking water, and eventually our bodies, this kind of cleanup technology could help stop plastic pollution before it spreads further into the water we rely on. While this research was done in lab conditions on industrial wastewater rather than drinking water systems, it points toward more affordable, practical ways to filter out these pollutants at the source.
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