CMI researchers at Ames Laboratory conducted the research for this highlight
Achievement
A simple, environmentally benign and efficient process for chemical separation of rare earth oxalates (CSEREOX), within two rare earth element subgroups was developed.
Significance and impact
- Separation of REEs is performed in aqueous media at neutral pH which minimizes operations with mineral acids.
- Process was demonstrated for recovery of Dy from magnets, which are typically very diluted (<5%).
- The process is applicable to feedstock derived from ores & recycling, including e-wastes.
Next steps
- Identify conditions to increase Dy separation efficiency to =95% (currently at 68%) for e-wastes applications.
- Work to secure a patent, which is pending: US20190160394A1.
