Highlights

• Fujian Normal University published a Chemical Engineering Journal review on using bacteria and fungi to produce nanoparticles that selectively bind rare-earth elements (REE) from acidic mine wastewater.
• This method offers lower cost and better scalability than conventional methods.
• Researchers propose upgrading native mine-site microbial communities into 'living nanoreactors' that could increase REE recovery rates by 30% or more.
• These living nanoreactors could also reduce pollutants and enable closed-loop recycling.
• While promising for turning wastewater liabilities into REE assets, this review article requires validation through:
  • Field trials
  • Opex/capex models
  • Downstream purity data before commercial deployment

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Fujian Normal University (opens in a new tab) says its environmental sciences team led by Prof. Chen Zuliang has published a new review—“Recent advances in microbial nanomaterials/nanoparticles synthesis and rare earth elements recovery from rare earth mine wastewater: A review”—in the high-impact Chemical Engineering Journal. The paper surveys how bacteria and fungi can in situ produce surface-functionalized nanoparticles, either inside or outside the cell, that selectively bind rare-earth elements (REEs) from acidic mine wastewater. Compared with conventional chemical precipitation or membrane separation, the authors argue microbial routes offer lower cost and energy use, finer particle-size control, better selectivity, and stronger scalability.

The reviewers advance a notable concept for operations: upgrade native, on-site microbial communities into “living nanoreactors.” In practice, that means tuning the existing microbiome at mine sites to simultaneously reduce pollutants at the source and concentrate REEs for secondary recovery. The team estimates such systems could raise recovery rates by “30% or more,” and outlines a roadmap toward closed-loop REE recycling coupled with ecological remediation around mines.

Why Important

If validated at scale, “living nanoreactors” could turn a liability—acidic tailings and process water—into an REE stream, lowering waste-management costs and improving project economics. That could influence permitting narratives, ESG scoring, and operating costs for both greenfield and brownfield assets. It also hints at future licensing or joint-development opportunities: microbial strains, bioreactor designs, and process IP. For the U.S. and allied markets pursuing ex-China REE supply, wastewater valorization is an under-tapped pathway that could complement hard-rock projects, recycling, and magnet-scrap recovery.

Caveats to Watch

This is a review article, not a pilot-plant result. The authors themselves flag three bottlenecks before engineering deployment—strain discovery/selection, nanoparticle regeneration, and process scale-up.

Investors should look for concrete next steps: controlled field trials at Chinese REE mines, reproducible recovery factors, opex/capex models, and data on downstream purity specifications (e.g., Nd/Pr selectivity) to gauge commercial relevance.

Source: Baogang Daily (opens in a new tab) (media of state-owned entity), summarizing Fujian Normal University’s announcement.

Disclaimer: This report originates from the media of a state-owned entity. The claims should be independently verified before forming business or investment conclusions.

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