environment

Waste and D&D Engineering and Technology Development: Enhancement of Fire Resiliency in Industry Fixatives

Waste and D&D Engineering and Technology Development: Enhancement of Fire Resiliency in Industry Fixatives

Sponsor – DOE-EM The objective for this research is to improve the operational performance of fixatives by enhancing their fire resiliency. Most fixatives begin to see degradation between 200-400°F, at which time radioisotopes could potentially be released into the environment. Intumescent coatings develop a thick char to insulate the substrate and protect it from fire and extreme heat conditions. The layering or combining of an intumescent coating with the fixative…

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Environmental Remediation Technologies: Sustainability Plan for the A/M Area Groundwater Remediation System

Environmental Remediation Technologies: Sustainability Plan for the A/M Area Groundwater Remediation System

Sponsor – DOE This task supports US DOE EM-13 in developing plans for improving active remediation systems to improve performance while lowering resources (money, GHSs, energy) used. The initial effort identified specific improvements to the SRS A/M Area groundwater remediation system with expectation that it would apply to many “pump and treat” systems across DOE. Under “Sustainable Remediation” sustainability metrics are identified and included into environmental management decisions. Benefits: Provides…

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Environmental Remediation Science & Technology: Surface Water Modeling of Tims Branch

Environmental Remediation Science & Technology: Surface Water Modeling of Tims Branch

Sponsor – DOE This task involves hydrological modeling related to water, sediment, mercury and tin in Tims Branch at Savannah River Site (SRS) which has been impacted by 60 years of anthropogenic events associated with discharges from process and laboratory facilities. Tims Branch provides a unique opportunity to study complex systems science in a full-scale ecosystem that experienced controlled step changes in boundary conditions.   FIU is continuing development and…

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Environmental Remediation Science & Technology: Remediation Research and Technical Support for Savannah River Site

Environmental Remediation Science & Technology: Remediation Research and Technical Support for Savannah River Site

Sponsor – DOE FIU’s Applied Research Center (ARC) is supporting the U.S. Department of Energy’s Savannah River Site in remediating uranium in F/H area seepage basins. The F/H area seepage basins received approximately 1.8 billion gallons of acidic (pH 3.2-5.5) waste solutions contaminated with radionuclides and dissolved metals. The acidic nature of the basin waste solutions caused the mobilization of metals and radionuclides, resulting in contaminated groundwater plumes. The major…

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Rapid Deployment of Engineered Solutions to Environmental Problems: Investigation of Microbial-Meta-Autunite Interactions – Effect of Bicarbonate and Calcium

Rapid Deployment of Engineered Solutions to Environmental Problems: Investigation of Microbial-Meta-Autunite Interactions – Effect of Bicarbonate and Calcium

Sponsor – DOE FIU’s Applied Research Center (ARC) is supporting the U.S. Department of Energy’s Hanford Site in developing a strategy to improve the efficiency of the uranium stabilization process through polyphosphate injection technology. Tripolyphosphate injected in aqueous solutions in order to sequester uranium, undergoes hydrolysis to orthophosphate forms, which serve as readily available nutrients for the various micro-organisms that thrive under these specific conditions and may even lead to…

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Environmental Remediation Science & Technology: Sequestering Uranium at the Hanford 200 Area Vadose Zone by In Situ Subsurface pH Manipulation Using NH3 Gas

Environmental Remediation Science & Technology: Sequestering Uranium at the Hanford 200 Area Vadose Zone by In Situ Subsurface pH Manipulation Using NH3 Gas

Sponsor – DOE FIU’s Applied Research Center (ARC) is supporting the U.S. Department of Energy’s Hanford Site in developing a strategy to improve the efficiency of subsurface uranium stabilization through pH manipulation via NH3 gas injection. This work is focused on long-lived uranium contamination, which is one of the key contaminants of concern for the Hanford site. Injection of reactive gases such as NH3 is an innovative remediation technology shown…

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Technology Development and Instrumentation Evaluation: Development of Inspection Tools for DST Primary Tanks

Technology Development and Instrumentation Evaluation: Development of Inspection Tools for DST Primary Tanks

Sponsor – DOE FIU’s Applied Research Center (ARC) is supporting the U.S. Department of Energy’s Hanford Site by developing robotic technologies for the evaluation of Tank 241-AY-102 and other similar tanks. Tank waste has recently been discovered in the annulus of AY-102. Inspection tools are needed to isolate and pinpoint the source of the material entering the annulus. These tools will need to provide video feedback so that an assessment…

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Chemical Process Alternatives for Radioactive Waste: Evaluation of FIU’s Solid-Liquid Interface Monitor (SLIM) for Estimating the Onset of Deep Sludge Gas Release Events

Chemical Process Alternatives for Radioactive Waste: Evaluation of FIU’s Solid-Liquid Interface Monitor (SLIM) for Estimating the Onset of Deep Sludge Gas Release Events

Sponsor – DOE The ability to monitor the interface between liquids containing suspended solids and settled solids in HLW tanks has multiple, important applications at Hanford including: Measurement of the height of HLW solids added to double-shelled tanks to ensure it is below the critical value determined from a safety basis; Imaging in single-shelled tanks to support pump emplacement to minimize plugging potential; Rapid imaging of the floors of mixing,…

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Chemical Process Alternatives for Radioactive Waste: Evaluation of Nonmetallic Components in the Hanford Waste Transfer System (WTS)

Chemical Process Alternatives for Radioactive Waste: Evaluation of Nonmetallic Components in the Hanford Waste Transfer System (WTS)

Sponsor – DOE Nonmetallic materials are used in U.S. DOE’s Hanford Site Tank Farm WTS and include the inner primary hoses in the hose-in-hose transfer lines (HIHTLs), Garlock® gaskets, ethylene propylene diene monomer (EPDM) O-rings, and other nonmetallic materials. These nonmetallic materials are exposed to β and γ irradiation, caustic solutions as well as high temperatures and pressure stressors. How the nonmetallic components react to each of these stressors individually…

1 year ago...

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