Use of Polyphosphate to Decrease Uranium Leaching in Hanford 300 Area Smear Zone Sediments

Szecsody, James E. ; Zhong, Lirong ; Oostrom, Martinus ; Vermeul, Vincent R. ; Fruchter, Jonathan S. ; Williams, Mark D.

关键词: Environmental Molecular Sciences Laboratory;   

DOI  :  10.2172/1089107
RP-ID  :  PNNL-21733
RP-ID  :  RPT-DVZ-AFRI-003
PID  :  OSTI ID: 1089107
Others  :  Other: 23593
Others  :  830403000

美国|英语

来源: SciTech Connect

【 摘 要 】

The primary objective of this study is to summarize the laboratory investigations performed to evaluate short- and long-term effects of phosphate treatment on uranium leaching from 300 area smear zone sediments. Column studies were used to compare uranium leaching in phosphate-treated to untreated sediments over a year with multiple stop flow events to evaluate longevity of the uranium leaching rate and mass. A secondary objective was to compare polyphosphate injection, polyphosphate/xanthan injection, and polyphosphate infiltration technologies that deliver phosphate to sediment.