In Situ Uranium Stabilization through Polyphosphate Remediation: Development and Demonstration at the Hanford Site 300 Area, Washington State
A site specific treatability test was conducted to optimize polyphosphate remediation technology for implementation through a field-scale technology demonstration to accelerate monitored natural attenuation of the uranium plume within the Hanford 300 Area aquifer. A focused application of polyphosphate was conducted in a source or “hot spot” area to reduce the inventory of available uranium that contributes to the groundwater plume through direct precipitation of uranyl-phosphate solids and secondary containment via precipitation of apatite acting as a long-term sorbent for uranium. The general treatability testing approach consisted of initial site characterization and setup, a polyphosphate injection test, and post-treatment performance assessment. Fundamental science studies were conducted with site specific sediment and groundwater to develop an effective remediation scheme for deployment of polyphosphate technology. In addition to remediating a portion of the plume, the data from this test provides valuable information for designing a full-scale remediation of uranium in the aquifer at the 300 Area of the Hanford Site. It will also provide a detailed understanding of the fundamental underpinnings necessary to evaluate the efficacy and potential utilization of polyphosphate technology at other sites with varying geochemical and hydrodynamic conditions.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1006329
- Report Number(s):
- PNNL-SA-57789; 24812; 5592; 830403000; KP1504010; TRN: US1101223
- Resource Relation:
- Related Information: Waste Management Research Trends, 25-103
- Country of Publication:
- United States
- Language:
- English
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Uranium Plume Treatability Demonstration at the Hanford Site 300 Area: Development of Polyphosphate Remediation Technology for In Situ Stabilization of Uranium
Uranium Plume Treatability Demonstration at the Hanford Site 300 Area: Development of Polyphosphate Remediation Technology for In-Situ Stabilization of Uranium - 8070
Related Subjects
54 ENVIRONMENTAL SCIENCES
58 GEOSCIENCES
APATITES
AQUIFERS
CONTAINMENT
HYDRODYNAMICS
IMPLEMENTATION
NATURAL ATTENUATION
PERFORMANCE
PLUMES
PRECIPITATION
SEDIMENTS
SITE CHARACTERIZATION
STABILIZATION
TESTING
URANIUM
HANFORD ENGINEERING DEVELOPMENT LABORATORY
uranium
polyphosphate
remediation
Environmental Molecular Sciences Laboratory