Nanosponge sequesters excess phosphate from water


Researchers at Northwestern University have developed a porous, flexible and spongelike membrane coated with iron-oxide nanostructures that allow it to selectively sequester up to 99% of phosphate ions from contaminated water. Researchers can control the membrane by adjusting the pH to absorb or release nutrients to allow for phosphate recovery and reuse of the membrane for multiple cycles.

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