Group partitioning of HLLW via ferrite treatment

The ferrite particles previously prepared by wet method were examined to electromagnetically collect the precipitates such as hydroxides and carbonates from the simulated HLLW. The obtained results are summarized as follows; The partitioning of HLLW into four groups by individual precipitation of hydroxides and carbonates, as adjusting pH with ammonia and concentration of ammonium carbonate, is feasible in practice. Cross-contaminations were observed, but some of them were removable by further washing or reprecipitation. The ferrite particles work well to almost completely recover the most cations except for Mn and Ru from waste solution. To obtain a high recovery of Mn, Mn(OH)2 will have to be treated in the absence of air, because of rapid air oxidation. (author)