NETL-supported research to secure a domestic supply of rare earth elements (REEs) shows economic potential regarding efficiency and cost savings and progresses along the pathway to commercial viability.
The Lab has funded and supported multiple projects across the nation to extract REEs from coal and coal-related byproducts. A notable example is coal acid mine drainage (AMD) and sludge originating from abandoned or still operating mines. However, NETL and its partners are making progress refining a method to clean up AMD in order to extract the vital REEs needed for the U.S. economy to stay competitive on the global market while providing environmental remediation.
This sludge is enriched in REEs and contains an average total REE content several times higher than raw, untreated AMD. However, separating the valuable REEs can be very expensive.
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