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Synergistic capture mechanisms for alkali and sulfur species from combustion

Description: This report presents work done on a laboratory combustor in an attempt to identify mechanisms that govern the simultaneous capture of alkali and sulfur species using sorbent injection techniques. The mechanisms of capture fall into two broad categories i.e. Physical transport of alkali species (in vapor or condensed phase) to the sorbent surface and surface reaction between the alkali species and the sorbents. Water solubility, though not specific, has been used to get an indication of relative… more
Date: April 23, 1992
Creator: Peterson, T.W.; Shadman, F.; Wendt, J.O.L. & Mwabe, P.O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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ENHANCED DOE HIGH LEVEL WASTE MELTER THROUGHPUT STUDIES: SRNL GLASS SELECTION STRATEGY

Description: The Department of Energy has authorized a team of glass formulation and processing experts at the Savannah River National Laboratory (SRNL), the Pacific Northwest National Laboratory (PNNL), and the Vitreous State Laboratory (VSL) at Catholic University of America to develop a systematic approach to increase high level waste melter throughput (by increasing waste loading with minimal or positive impacts on melt rate). This task is aimed at proof-of-principle testing and the development of tools… more
Date: January 23, 2008
Creator: Raszewski, F; Tommy Edwards, T & David Peeler, D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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INTERNATIONAL STUDY OF ALUMINUM IMPACTS ON CRYSTALLIZATION IN U.S. HIGH LEVEL WASTE GLASS

Description: The objective of this task was to develop glass formulations for (Department of Energy) DOE waste streams with high aluminum concentrations to avoid nepheline formation while maintaining or meeting waste loading and/or waste throughput expectations as well as satisfying critical process and product performance related constraints. Liquidus temperatures and crystallization behavior were carefully characterized to support model development for higher waste loading glasses. The experimental work, … more
Date: September 23, 2008
Creator: Fox, K; David Peeler, D; Tommy Edwards, T; David Best, D; Irene Reamer, I; Phyllis Workman, P et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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DEVELOPMENT OF AN INSOLUBLE SALT SIMULANT TO SUPPORT ENHANCED CHEMICAL CLEANING TESTS

Description: The closure process for high level waste tanks at the Savannah River Site will require dissolution of the crystallized salts that are currently stored in many of the tanks. The insoluble residue from salt dissolution is planned to be removed by an Enhanced Chemical Cleaning (ECC) process. Development of a chemical cleaning process requires an insoluble salt simulant to support evaluation tests of different cleaning methods. The Process Science and Engineering section of SRNL has been asked to d… more
Date: May 23, 2008
Creator: Eibling, R
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MATRIX 2 RESULTS OF THE FY07 ENHANCED DOE HIGH-LEVEL WASTE MELTER THROUGHPUT STUDIES AT SRNL

Description: High-level waste (HLW) throughput (i.e., the amount of waste processed per unit time) is a function of two critical parameters: waste loading (WL) and melt rate. For the Waste Treatment and Immobilization Plant (WTP) at the Hanford Site and the Defense Waste Processing Facility (DWPF) at the Savannah River Site (SRS), increasing HLW throughput would significantly reduce the overall mission life cycle costs for the Department of Energy (DOE). The objective of this study was to generate supplemen… more
Date: October 23, 2008
Creator: Raszewski, F; Tommy Edwards, T & David Peeler, D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Project Work Plan Chromium Vadose Zone Characterization and Geochemistry

Description: The major objectives of the proposed study are to 1) determine the leaching characteristics of Cr(VI) from contaminated sediments collected from 100 area spill sites, 2) elucidate possible Cr(VI) mineral and/or chemical associations that may be responsible for Cr(VI) retention in the Hanford site 100 areas through the use of i) macroscopic solubility studies and ii) microscale characterization of contaminated sediments, and 3) from these data construct a conceptual model of Cr(VI) geochemistry … more
Date: May 23, 2006
Creator: Ainsworth, Calvin C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Extension of the EQ3/6 computer codes to geochemical modeling of brines

Description: Recent modifications to the EQ3/6 geochemical modeling software package provide for the use of Pitzer's equations to calculate the activity coefficients of aqueous species and the activity of water. These changes extend the range of solute concentrations over which the codes can be used to dependably calculate equilibria in geochemical systems, and permit the inclusion of ion pairs, complexes, and undissociated acids and bases as explicit component species in the Pitzer model. Comparisons of ca… more
Date: October 23, 1984
Creator: Jackson, K.J. & Wolery, T.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Synergistic capture mechanisms for alkali and sulfur species from combustion. Quarterly report No. 6, December 1991--February 1992

Description: This report presents work done on a laboratory combustor in an attempt to identify mechanisms that govern the simultaneous capture of alkali and sulfur species using sorbent injection techniques. The mechanisms of capture fall into two broad categories i.e. Physical transport of alkali species (in vapor or condensed phase) to the sorbent surface and surface reaction between the alkali species and the sorbents. Water solubility, though not specific, has been used to get an indication of relative… more
Date: April 23, 1992
Creator: Peterson, T. W.; Shadman, F.; Wendt, J. O. L. & Mwabe, P. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

TANK 26F SUPERNATANT AND 2F EVAPORATOR EDUCTOR PUMP SAMPLE CHARACTERIZATION RESULTS

Description: In an effort to understand the reasons for system plugging problems in the SRS 2F evaporator, supernatant samples were retrieved from the evaporator feed tank (Tank 26F) and solids were collected from the evaporator eductor feed pump for characterization. The variable depth supernatant samples were retrieved from Tank 26F in early December of 2010 and samples were provided to SRNL and the F/H Area laboratories for analysis. Inspection and analysis of the samples at SRNL was initiated in early M… more
Date: August 23, 2011
Creator: King, W.; Hay, M. & Coleman, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Glass Ceramic Waste Forms for Combined CS+LN+TM Fission Products Waste Streams

Description: In this study, glass ceramics were explored as an alternative waste form for glass, the current baseline, to be used for immobilizing alkaline/alkaline earth + lanthanide (CS+LN) or CS+LN+transition metal (TM) fission-product waste streams generated by a uranium extraction (UREX+) aqueous separations type process. Results from past work on a glass waste form for the combined CS+LN waste streams showed that as waste loading increased, large fractions of crystalline phases precipitated upon slow … more
Date: September 23, 2010
Creator: Crum, Jarrod V.; Turo, Laura A.; Riley, Brian J.; Tang, Ming; Kossoy, Anna & Sickafus, Kurt E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hanford Tanks 241-C-203 and 241 C 204: Residual Waste Contaminant Release Model and Supporting Data

Description: This report was revised in May 2007 to correct 90Sr values in Chapter 3. The changes were made on page 3.9, paragraph two and Table 3.10; page 3.16, last paragraph on the page; and Tables 3.21 and 3.31. The rest of the text remains unchanged from the original report issued in October 2004. This report describes the development of release models for key contaminants that are present in residual sludge remaining after closure of Hanford Tanks 241-C-203 (C-203) and 241-C-204 (C-204). The release m… more
Date: May 23, 2007
Creator: Deutsch, William J.; Krupka, Kenneth M.; Lindberg, Michael J.; Cantrell, Kirk J.; Brown, Christopher F. & Schaef, Herbert T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Effect of Impurities on the Processing of Aluminum Alloys

Description: For this Aluminum Industry of the Future (IOF) project, the effect of impurities on the processing of aluminum alloys was systematically investigated. The work was carried out as a collaborative effort between the Pennsylvania State University and Oak Ridge National Laboratory. Industrial support was provided by ALCOA and ThermoCalc, Inc. The achievements described below were made. A method that combines first-principles calculation and calculation of phase diagrams (CALPHAD) was used to develo… more
Date: April 23, 2007
Creator: Liu, Zi-Kui; Zhang, Shengjun; Han, Qingyou & Sikka, Vinod
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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HRP-CP: Conclusions Concerning the Predicted Behavior of Insoluble Corrosion and Fission Products in the HRT

Description: Information available from HRP-CP development studies was summarized amd used as a basis for predicting the probable behavior of corrosion and fission product solids in the HRT and its associated chemical processing plant. Operation of the chemical plant will probably limit the HRT circulating solids concentration to between 10 and 100 ppm; quantitative predictions are uncertain due to uncertainties concerning the charaeteristics of reactor solids and the effects of rcactor geometries. (auth)
Date: January 23, 1958
Creator: Haas, P. A.; Horton, R. W. & McNees, R. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Validation for the Permanganate Digestion of Reillex HPQ Anion Resin

Description: The flowsheet for the digestion of Reillex{trademark} HPQ was validated both under the traditional alkaline conditions and under strongly acidic conditions. Due to difficulty in performing a pH adjustment in the large tank where this flowsheet must be performed, the recommended digestion conditions were changed from pH 8-10 to 8 M HNO{sub 3}. Thus, no pH adjustment of the solution is required prior to performing the permanganate addition and digestion and the need to sample the digestion tank t… more
Date: September 23, 2009
Creator: Kyser, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radioactivity Associated With Underground Nuclear Explosions

Description: The detonation of a contained or partially contained nuclear explosion is accompanied by the deposition of a large fraction of the energy in the form of high-temperature, high-pressure regions. The nature of the surrounding medium, the time-temperature history, and the time of cavity collapse or venting determine the extent to which undesirable nuclides such as Sr/sup 90/ and Cs/sup 137/ will appear outside a fused insoluble matrix and be available to ground water or to the atmosphere. The move… more
Date: June 23, 1959
Creator: Batzel, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Uranium-Nitrogen-Carbon System

Description: The ternary system uranium- nitrogen- carbon has been studied at 1800 deg C under vacuum and under a 1atm. nitrogen pressure. There is complete solid solubility between UN and UC, and essentially no solid solubility of nitrogen in UC/sub 2/ or U/sub 2/C/sub 3/ or of carbon in U/sub 2/N/su b 3/. At 1800 deg C the two-phase field, U(C,N) and UC/sub 2/, and the three-phase field, U(C,N), UC/ sub 2/, and C, exist in vacuum or argon. At 1 atm. of nitrogen, the uranium nitrides are more stable than t… more
Date: June 23, 1958
Creator: Austin, A. E. & Gerds, A. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

HF-based etching processes for improving laser damage resistance of fused silica optical surfaces

Description: The effect of various HF-based etching processes on the laser damage resistance of scratched fused silica surfaces has been investigated. Conventionally polished and subsequently scratched fused silica plates were treated by submerging in various HF-based etchants (HF or NH{sub 4}F:HF at various ratios and concentrations) under different process conditions (e.g., agitation frequencies, etch times, rinse conditions, and environmental cleanliness). Subsequently, the laser damage resistance (at 35… more
Date: February 23, 2010
Creator: Suratwala, T I; Miller, P E; Bude, J D; Steele, R A; Shen, N; Monticelli, M V et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Tanks 18 And 19-F Structural Flowable Grout Fill Material Evaluation And Recommendations

Description: Cementitious grout will be used to close Tanks 18-F and 19-F. The functions of the grout are to: 1) physically stabilize the final landfill by filling the empty volume in the tanks with a non-compressible material; 2) provide a barrier for inadvertent intrusion into the tank; 3) reduce contaminant mobility by a) limiting the hydraulic conductivity of the closed tank and b) reducing contact between the residual waste and infiltrating water; and 4) providing an alkaline, chemically reducing envir… more
Date: April 23, 2013
Creator: Langton, C. A. & Stefanko, D. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Solubility of Anthracene in Quaternary Solvent Mixtures of 2,2,4-Trimethylpentane + 2-Propanone + Methanol + Alcohols at 298.15 K

Description: Article on the solubility of anthracene in quaternary solvent mixtures of 2,2,4-trimethylpentane + 2-propanone + methanol + alcohols at 298.15 K.
Date: August 23, 2008
Creator: Shayanfar, Ali; Soltanpour, Shahla; Jabbaribar, Farnaz; Hamidi, Ali A.; Acree, William E. (William Eugene) & Jouyban, Abolghasem
Item Type: Refine your search to only Article
Partner: UNT College of Arts and Sciences
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Solubility of 5-(2-Chlorophenyl)-7-nitro-1,3-dihydro-1,4-benzodiazepin-2-one, 7-Chloro-1-methyl-5-phenyl-3H-1,4-benzodiazepin-2-one, and 6-(2,3-Dichlorophenyl)-1,2,4-triazine-3,5-diamine in the Mixtures of Poly(ethylene glycol) 600, Ethanol, and Water at a Temperature of 298.2 K

Description: Article on the solubility of 5-(2-chlorophenyl)-7-nitro-1, 3-dihydro-1, 4-benzodiazepin-2-one, 7-chloro-1-methyl-5-phenyl-3H-1, 4-benzodiazepin-2-one, and 6-(2,3-dichlorophenyl)-1, 2, 4,-triazine-3, 5-diamine in the mixtures of poly(ethylene glycol) 600, ethanol, and water at temperature of 298.2 K.
Date: October 23, 2009
Creator: Soltanpour, Shahla; Acree, William E. (William Eugene) & Jouyban, Abolghasem
Item Type: Refine your search to only Article
Partner: UNT College of Arts and Sciences
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Linear Free Energy Relationship Correlations for Room Temperature Ionic Liquids: Revised Cation-Specific and Anion-Specific Equation Coefficients for Predictive Applications Covering a Much Larger Area of Chemical Space

Description: Article discussing linear free energy relationship correlations for room temperature ionic liquids and revised cation-specific and anion-specific equation coefficients for predictive applications covering a much larger area of chemical space.
Date: March 23, 2009
Creator: Sprunger, Laura M.; Gibbs, Jennifer; Proctor, Amy; Acree, William E. (William Eugene); Abraham, M. H. (Michael H.); Meng, Yunjing et al.
Item Type: Refine your search to only Article
Partner: UNT College of Arts and Sciences
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Solubility of Anthracene in Binary Alkane + 2-Ethyl-1-hexanol and Alkane + 1-Pentanol Solvent Mixtures at 298.2 K

Description: Article on the solubility of anthracene in binary alkane + 2-ethyl-1-hexanol and alkane + 1-pentanol solvent mixtures at 298.2 K.
Date: April 23, 1998
Creator: Roy, Lindsay Elizabeth; Hernández, Carmen E.; Reddy, Gaddum D.; Sanders, Jessica T.; Deng, Taihe; Tuggle, Michael B. et al.
Item Type: Refine your search to only Article
Partner: UNT College of Arts and Sciences
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