The U.S. Department of Energy is considering implementing the direct feed approach for the vitrification of low-activity waste (LAW) and high-level waste (HLW) at the Hanford site in Washington state.
The incorporation of neptunium(VI) into the layered uranyl selenite Cs[(UO2)(HSeO3)(SeO3)] has yielded the highest level of neptunium uptake in a uranyl compound to date with an average of 12(±3)%