Optimization of Magnetite Carrier Precipitation Process for Plutonium Waste Reduction

Evolution of chemical conditions and estimated solubility controls on radionuclides in the residual waste layer during post-closure aging of high-level waste tanks

“…Coprecipitation with ferric iron phases has been the basis for various methods of removal of plutonium from solution (e.g., Gävfert et al, 2002;Slater et al, 1997;Lozano et al, 1997). Site specific evidence is presented in a review of Tank 18 history and chemistry by Hobbs (2012).…”

Evolution of Chemical Conditions and Estimated Plutonium Solubility in the Residual Waste Layer During Post-Closure Aging of Tank 18

“…There is indirect evidence to suggest that plutonium would be coprecipitated with iron phases. Coprecipitation with ferric iron phases has been the basis for various methods of removal of plutonium from solution (e.g., Gävfert et al, 2002;Slater et al, 1997;Lozano et al, 1997). Site specific evidence is presented in a review of Tank 18 history and chemistry by Hobbs (2012).…”

Optimization of the Processing of Mo Disks

“…In-situ formed magnetite has been used for removal of metal ions, including fission products and actinides, from solutions [4][5][6][7][8][9][10][11]. Magnetite is formed immediately by adding solution containing Fe(II) and Fe(III) ions to alkaline medium [4,5,8]. The magnetite particles remove metal ions from solution during the precipitation process.…”