Uranium Metal Analysis via Selective Dissolution

Delegard, Calvin H. ; Sinkov, Sergey I. ; Schmidt, Andrew J. ; Chenault, Jeffrey W.

关键词: DESIGN;    DISSOLUTION;    HYDROGEN;    MANAGEMENT;    PROCESSING;    SLUDGES;    STORAGE;    TRANSPORT;    URANIUM;    WASTES;    WATER;   

DOI  :  10.2172/944505
RP-ID  :  PNNL-17800
PID  :  OSTI ID: 944505
Others  :  Other: 830403000
Others  :  TRN: US200902%%909

学科分类：再生能源与代替技术

美国|英语

来源: SciTech Connect

【 摘 要 】

Uranium metal, which is present in sludge held in the Hanford Site K West Basin, can create hazardous hydrogen atmospheres during sludge handling, immobilization, or subsequent transport and storage operations by its oxidation/corrosion in water. A thorough knowledge of the uranium metal concentration in sludge therefore is essential to successful sludge management and waste process design. The goal of this work was to establish a rapid routine analytical method to determine uranium metal concentrations as low as 0.03 wt% in sludge even in the presence of up to 1000-fold higher total uranium concentrations (i.e., up to 30 wt% and more uranium) for samples to be taken during the upcoming sludge characterization campaign and in future analyses for sludge handling and processing. This report describes the experiments and results obtained in developing the selective dissolution technique to determine uranium metal concentration in K Basin sludge.