Steven R. Baum
YOU?
Author Swipe
View article: Sample Preparation Method for Low-Level Total <sup>129</sup>I Measurements by ICP-MS
Sample Preparation Method for Low-Level Total <sup>129</sup>I Measurements by ICP-MS Open
Trace-level measurements of iodine’s isotopic (129I and 127I) and chemical species distributions are needed for an accurate understanding of radioiodine migration in the Hanford subsurface. Pacific Northwest National …
View article: Characterization of Contaminants and Mobility in WMA A-AX Boreholes D0006 and D0008
Characterization of Contaminants and Mobility in WMA A-AX Boreholes D0006 and D0008 Open
This study was initiated to determine if subsurface contaminants in the A-AX vadose zone at the Hanford site (boreholes D0006 and D0008) caused corrosion of nearby stainless steel well casings (299-E-24-19, 299-E25-46, and 299-E25-236) and…
View article: Hydroxide promotes ion pairing in the NaNO<sub>2</sub>–NaOH–H<sub>2</sub>O system
Hydroxide promotes ion pairing in the NaNO<sub>2</sub>–NaOH–H<sub>2</sub>O system Open
The solubility and spectroscopy of sodium nitrite in sodium hydroxide solutions are detailed to provide insight into processes underlying solubility.
View article: Evaluation of the Change in Uranium Mobility in Sediments from the Hanford 300-FF-5 Stage B Polyphosphate Field Injection
Evaluation of the Change in Uranium Mobility in Sediments from the Hanford 300-FF-5 Stage B Polyphosphate Field Injection Open
The purpose of this study was to evaluate the change in uranium mobility in the periodically re-wetted zone (PRZ) and upper unconfined aquifer of the Hanford Site’s 300-FF-5 operable unit as a result of Stage B polyphosphate (PO4
View article: Ion–ion interactions enhance aluminum solubility in alkaline suspensions of nano-gibbsite (α-Al(OH)<sub>3</sub>) with sodium nitrite/nitrate
Ion–ion interactions enhance aluminum solubility in alkaline suspensions of nano-gibbsite (α-Al(OH)<sub>3</sub>) with sodium nitrite/nitrate Open
Addition of NaNO2 and/or NaNO3 to the α-Al(OH)3–NaOH–H2O system leads to significant enhancement of α-Al(OH)3 solubility.
View article: Leach Testing of Laboratory-Scale Melter Evaporator Condensate Cementitious Waste Forms
Leach Testing of Laboratory-Scale Melter Evaporator Condensate Cementitious Waste Forms Open
Cementitious waste forms immobilizing evaporated AP-105 off-gas condensate were used to determine radionuclide and contaminant leachability in deionized water over a 63-day period. The off-gas condensate was collected during the actual tan…
View article: Geochemical, Microbial, and Physical Characterization of 200-DV-1 Operable Unit B-Complex Cores from Boreholes C9552, C9487, and C9488 on the Hanford Site Central Plateau
Geochemical, Microbial, and Physical Characterization of 200-DV-1 Operable Unit B-Complex Cores from Boreholes C9552, C9487, and C9488 on the Hanford Site Central Plateau Open
The 200-DV-1 Operable Unit (OU) is in the process of characterizing the vadose zone to support a remedial investigation and feasibility study. Contaminants disposed of at the land surface must migrate through the vadose zone before enterin…
View article: Aluminum Hydroxide Solubility in Sodium Hydroxide Solutions Containing Nitrite/Nitrate of Relevance to Hanford Tank Waste
Aluminum Hydroxide Solubility in Sodium Hydroxide Solutions Containing Nitrite/Nitrate of Relevance to Hanford Tank Waste Open
The technical basis to support the One System River Protection Project Integrated Flowsheet assumption for diluting staged direct feed low-activity waste (DFLAW) from the Hanford waste tanks with raw river water must be assessed in light o…
View article: Deep Vadose Zone Treatability Test of Uranium Reactive Gas Sequestration for the Hanford Central Plateau: Final Report
Deep Vadose Zone Treatability Test of Uranium Reactive Gas Sequestration for the Hanford Central Plateau: Final Report Open
The uranium reactive gas sequestration (URGS) test described herein was conducted as an element of the Deep Vadose Zone Treatability Test Plan for the Hanford Central Plateau. The URGS technology was tested as a potential remedy to decreas…
View article: Off-Gas Condensate and Cast Stone Analysis Results
Off-Gas Condensate and Cast Stone Analysis Results Open
A sample of off-gas condensate produced during a demonstration test of the direct-feed low-activity waste (DFLAW) Radioactive Waste Test Platform using waste retrieved from Hanford storage tank AP-105 waste was analyzed for major cations, …
View article: Contaminant Attenuation and Transport Characterization of 200-DV-1 Operable Unit Sediment Samples from Boreholes C9497, C9498, C9603, C9488, and C9513
Contaminant Attenuation and Transport Characterization of 200-DV-1 Operable Unit Sediment Samples from Boreholes C9497, C9498, C9603, C9488, and C9513 Open
Contaminants disposed of at the land surface must migrate through the vadose zone before entering groundwater. Processes that occur in the vadose zone can attenuate contaminant concentrations during transport through the vadose zone. Thus,…
View article: Effluent Management Facility Evaporator Bottoms: Waste Streams Formulation and Waste Form Qualification Testing
Effluent Management Facility Evaporator Bottoms: Waste Streams Formulation and Waste Form Qualification Testing Open
This report describes the results from grout formulation and cementitious waste form testing performed by Pacific Northwest National Laboratory for Washington River Protection Solutions, LLC (WRPS). These results are part of a screening te…
View article: Effluent Management Facility Evaporator Bottoms: Waste Streams Formulation and Waste Form Qualification Testing
Effluent Management Facility Evaporator Bottoms: Waste Streams Formulation and Waste Form Qualification Testing Open
This report describes the results from grout formulation and cementitious waste form testing performed by Pacific Northwest National Laboratory for Washington River Protection Solutions, LLC (WRPS). These results are part of a screening te…
View article: Contaminant Attenuation and Transport Characterization of 200-UP-1 Operable Unit Sediment Samples
Contaminant Attenuation and Transport Characterization of 200-UP-1 Operable Unit Sediment Samples Open
Contaminants disposed of at the land surface migrate through the vadose zone, forming plumes in groundwater. Processes that occur in the groundwater can attenuate contaminant concentrations during transport through the aquifer. For this re…
View article: Effect of Co-Contaminants Uranium and Nitrate on Iodine Remediation
Effect of Co-Contaminants Uranium and Nitrate on Iodine Remediation Open
The objective of this study is to evaluate the significance of co-contaminants on the migration and transformation of iodine species in the Hanford subsurface environment. These impacts are relevant because remedies that target individual …
View article: Contaminant Attenuation and Transport Characterization of 200-DV-1 Operable Unit Sediment Samples
Contaminant Attenuation and Transport Characterization of 200-DV-1 Operable Unit Sediment Samples Open
A laboratory study was conducted to quantify contaminant attenuation processes and associated contaminant transport parameters that are needed to evaluate transport of contaminants through the vadose zone to the groundwater. The laboratory…
View article: Contaminant Attenuation and Transport Characterization of 200-DV-1 Operable Unit Sediment Samples
Contaminant Attenuation and Transport Characterization of 200-DV-1 Operable Unit Sediment Samples Open
A laboratory study was conducted to quantify contaminant attenuation processes and associated contaminant transport parameters that are needed to evaluate transport of contaminants through the vadose zone to the groundwater. The laboratory…