99Technetium poses a difficult problem at multiple Department of Energy sites, where there are currently vast quantities in storage. 99Tc has a half-life of 2.3 x 105 years, thus it will have to be accounted for a very ...

Solvent extraction is a technique commonly used is the reprocessing of used nuclear fuel elements. It utilizes the partitioning of a metal ion between two immiscible phases, typically an acidic aqueous phase and a light ...

Methods to quantify activation products in complex samples are needed in areas such as nuclear safeguards, waste treatment and identification, environmental monitoring, and consequence management. Formation of activation ...

Rapid pre-concentration of trace lanthanide cations in aqueous solution has been achieved using mercury film electrodes. Although effective, this technique has shown minimal sample carryover when used to pre-concentrate ...

Solvent extraction is the most common chemical technique used in hydrometallurgical separations and purification of transition metals and f-elements. Solvent extraction of metallic cations, such as the f-elements, needs ...

Management of problematic tetravalent fission products and actinides present in the back end of the nuclear fuel cycle presents important scientific and technical challenges concerning the reprocessing and disposal of used ...

Strontium-90 and its daughter, yttrium-90, have cumulative fission yields of approximately 6 percent from the thermal neutron induced fission of uranium-235. With these high yields, Sr and Y are prevalent following an ...

A reliable and effective method of nuclear waste disposal is necessary for the continuing use of nuclear energy. Borosilicate glasses are the currently accepted method of the disposal of these wastes, though a thorough ...