Status Report on Phase Identification in Hanford Tank Sludges

Rapko, BM ; Lumetta, GJ

Pacific Northwest National Laboratory (U.S.)

关键词: Leaching;    Sludges;    Low-Level Radioactive Wastes;    Separation Processes;    Phase Studies;   

DOI  :  10.2172/771535
RP-ID  :  PNNL-13394
RP-ID  :  AC06-76RL01830
RP-ID  :  771535

美国|英语

来源: UNT Digital Library

【 摘 要 】

The US Department of Energy plans to vitrify Hanford's tank wastes. The vitrified wastes will be divided into low-activity and high-level fractions. There is an effort to reduce the quantity of high-activity wastes by removing nonradioactive components because of the high costs involved in treating high-level waste. Pretreatment options, such as caustic leaching, to selectively remove nonradioactive components are being investigated. The effectiveness of these proposed processes for removing nonradioactive components depends on the chemical phases in the tank sludges. This review summarizes the chemical phases identified to date in Hanford tank sludges.