Steven M. Serkiz

TL;DR: Two silver-impregnated activated carbons and their virgin granular activated carbon precursors were investigated for their ability to remove and sequester iodide from aqueous solutions in a series of batch sorption and leaching experiments, and silver content, total iodide concentration, and pH were the factors controlling the removal mechanisms.

TL;DR: Changes in aqueous- and solid-phase Pu oxidation state were monitored over time in magnetite (Fe3O4) suspensions containing 239Pu(V)-amended 0.01 M NaCl to find the Pu(IV) solid- phase species became more stable over time.

TL;DR: Changes in aqueous- and solid-phase plutonium oxidation state were monitored over time in hematite and goethite suspensions containing 239Pu(V)-amended 0.01 M NaCl using oxidation state analogues of plutonium and sediment-free controls of known Pu oxidation state.

TL;DR: It is concluded that both oxidation and reduction mechanisms can play an important role in Pu transportthrough the vadose zone and should be considered when evaluating disposal of Pu-bearing wastes.

TL;DR: Findings have important implications in estimating the risk associated with the geological burial of radiological waste in areas containing Mn-bearing minerals, such as at the Yucca Mountain or the Hanford Sites, because plutonium will be predominantly in a much less mobile oxidation state than previously suggested.