Algae Doubles Rare Earth Concentration, Offers Green Extraction Method

Published: Jul 31, 2026 16:56

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[SMM Rare Earth Flash] A research team from Southern Illinois University in the US has discovered that algae can increase the concentration of rare earth elements by more than double, offering a new approach beyond chemical processes for green rare earth extraction and potentially helping the US strengthen its critical minerals supply chain. The researchers added rare earth-containing rock powder and microalgae to a simulated river system, and the experimental results showed that the algae could absorb and concentrate rare earth elements, which were then recovered through a patented process. This technology is expected to reduce reliance on chemical agents such as sulphuric acid, and can be applied to the recovery of rare earths from secondary resources such as coal ash, mine tailings, and electronic waste. The team is currently testing more algae species and plans to apply for funding from the US National Science Foundation to further advance the research.

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