Yeid Stress Reduction of Radioactive Waste Slurries by Addition of Surfactants.

Stone, M. E.

Technical Information Center Oak Ridge Tennessee

关键词: Radioactive wastes;    Slurries;    Surfactants;    Radioactive waste processing;    Nuclear materials;   

RP-ID  :  DE2005837899

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The Savannah River Site (SRS) and Hanford site are in the process of stabilizing millions of gallons of radioactive waste slurries remaining from production of nuclear materials for the Department of Energy (DOE). The Defense Waste Processing Facility (DWPF) at SRS is currently vitrifying the waste in borosilicate glass while the facilities at the Hanford site are in the design/construction phase. Both processes utilize slurry-fed joule heated melters to vitrify the waste slurries. The rheological properties of the waste slurries limit the total solids content that can be processed by the remote equipment during the pretreatment and melter feed processes. The use of a surface active agent, or surfactant, to increase the solids loading that can be fed to the melters would increase melt rate by reducing the heat load on the melter required to evaporate the water in the feed. The waste slurries are non-Newtonian fluids with rheological properties that were modeled using the Bingham Plastic model. The results illustrate that altering the surface chemistry of the particulates in the waste slurries can lead to a reduction in the yield stress.