Alternative Conceptual Model for Colloid Generation from Commercial Spent Nuclear Fuel

Buck, Edgar C. ; McNamara, Bruce K. ; Hanson, Brady D.

Pacific Northwest National Laboratory (PNNL), Richland, WA (United States), Environmental Molecular Sciences Laboratory (EMSL)

关键词: 12 Management Of Radioactive Wastes, And Non-Radioactive Wastes From Nuclear Facilities Environmental Molecular Sciences Laboratory;    Spent Fuel;    Colloids;    11 Nuclear Fuel Cycle And Fuel Materials;    Yucca Mountain;   

DOI  :  10.2172/15010481
RP-ID  :  PNNL-14306
RP-ID  :  AC05-76RL01830
RP-ID  :  15010481

美国|英语

来源: UNT Digital Library

【 摘 要 】

Colloids have the potential to transport strongly sorbing radionuclide contaminants in soils and groundwater aquifers. Recent studies from the Nevada Test Site have indicated the enhanced mobility plutonium, albeit in minute quantities, associated with various silicate minerals (Kersting et al., 1999); however, significant colloidal transport of thorium (Th) and rare earths (RE) in nature, considered to be chemical analogs for plutonium, is rare. Yet, the current Yucca Mountain model for colloids would have predicted extensive Th- and RE migration, given these phases' association with clay minerals. Several studies have pointed to the effect of water flow rate on colloid and particulate migration. In this paper, we examine the benefit of relating water flow rate and the wasteform alteration structure to colloid release.