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In-Situ Uranium Stabilization Through Polyphosphate Injection: Pilot-Scale Treatability Test at the 300 Area, Hanford Site - 8187

Conference ·
OSTI ID:946397
This paper describes the pilot-scale treatability test that was conducted to evaluate the efficacy of using a polyphosphate injection approach to treat uranium-contaminated groundwater in situ within the 300 Area aquifer at the Hanford Site in Richland, Washington. Primary test objectives were to assess 1) direct treatment of available uranium contributing to the groundwater plume through precipitation of the uranyl phosphate mineral autunite, and 2) emplacement of secondary-treatment capacity via precipitation of the calcium phosphate mineral apatite, which acts as a long-term sorbent for uranium.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
946397
Report Number(s):
PNNL-SA-58147; 830403000
Country of Publication:
United States
Language:
English