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Characterization of solids in the Three Mile Island Unit 2 Reactor defueling water: Addendum

Description: Shortly after ORNL/TM-10362 was issued, it was discovered that a series of 31 figures had been inadvertently omitted. These figures, which consist of scanning electron microscope (SEM) photographs and energy-dispersive X-ray fluorescence scans, provide significant information about the results obtained in the tests performed with water sample W3. This Addendum includes these figures. Details of and comments on the SEM photographs may be found in ORNL/TM-10362.
Date: March 1, 1988
Creator: Campbell, D.O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Liquefaction of coals using ultra-fine particle, unsupported catalysts: In situ generation by rapid expansion of supercritical fluid solutions

Description: The program objective is to generate ultra-fine catalyst particles (20 to 400 {Angstrom} in size) and quantify their potential for improving coal dissolution in the solubilization stage of two-stage catalytic-catalytic liquefaction systems. In the first quarterly report for this program the concept behind our approach was detailed, the structure of the program was presented, key technical issues were identified, preliminary designs were outlined, and technical progress was discussed. All progre… more
Date: September 1, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Neutron scattering from solutions: the hydration of lanthanide and actinide ions

Description: The neutron scattering difference method is described and applied to investigations of the aqua rare-earth ions, Nd/sup 3 +/ and Dy/sup 3 +/. Metal-water distances and hydration numbers have been unambiguously determined for these ions' inner coordination spheres. The values of the hydration number, n, of 8.5 +- 0.2 for Nd/sup 3 +/ and 7.4 +- 0.5 for Dy/sup 3 +/, directly support the claim of Spedding et al. that n decreases by one unit across the lanthanide series. The possible application of … more
Date: January 1, 1985
Creator: Hahn, R.L.; Narten, A.H. & Annis, B.K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thermodynamics of natural and industrial waters

Description: The most effective general formulations of thermodynamic equations for multicomponent aqueous solutions are discussed with respect to various ranges of temperature, pressure and composition with emphasis on solutes important in natural or industrial waters. A familiar equation in molality and in excess Gibbs energy is very successful up to 300{degree}C and ionic strength 6 mol{center dot}kg{sup {minus}1}, and can often be extended to 350{degree}C or above at high pressure and in favorable cases… more
Date: August 1, 1991
Creator: Pitzer, K.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Long-term leaching of irradiated spent fuel

Description: Spent Light Water Reactor (LWR) fuel with burnups of 9, 28 and 54 MWd/kg U were leach tested at 25/sup 0/C in deionized water in a Paige apparatus. No discernible differences in leach rates were observed due to burnup. Additionally, the 28 MWd/kg U fuel was IAEA leach tested in five different leachants using the IAEA method. Deionized water gave the highest leach rates and a calcium chloride solution gave the lowest leach rates. An accelerated leaching period was observed during the Paige leach… more
Date: January 1, 1979
Creator: Katayama, Y. B. & Bradley, D. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Humic substance formation during wastewater infiltration

Description: Soil infiltration of wastewater effluents is a widely practiced method of treatment and disposal/reuse throughout the world. Renovation of the wastewater results from a wide variety of complex physicochemical and biological processes. One set of processes is speculated to involve the accumulation of organic matter by filtration and sorption followed by formation of humic substances. This humic substance formation can effect the performance of soil treatment systems by contributing to soil pore … more
Date: January 1, 1991
Creator: Siegrist, R.L. (Oak Ridge National Lab., TN (United States)); Hildmann-Smed, R.; Filip, Z.K. (Bundesgesundheitsamt (BGA), Langen (Germany). Inst. fuer Wasser-, Boden- und Lufthygiene) & Jenssen, P.D. (Norges Landbrukshoegskole, Aas (Norway). Centre for Soil and Environmental Research)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Electron transfer reactions of metal complexes in solution

Description: A few representative electron-transfer reactions are selected and their kinetic parameters compared with the predictions of activated complex models. Since Taube has presented an elegant treatment of intramolecular electron-transfer reactions, emphasis is on bimolecular reactions. The latter electron-transfer reactions are more complicated to treat theoretically since the geometries of their activated complexes are not as well known as for the intramolecular case. In addition in biomolecular re… more
Date: January 1, 1977
Creator: Sutin, N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Unique sampling and transfer system for the Fluorinel Dissolution and Storage Facility

Description: Liquid sampling, sample transfer and analytical systems for the Fluorinel Dissolution and Storage Facility (FAST) are required for monitoring feed and process solutions on a constant basis during fuel dissolution. Due to sequential batch dissolution, sampling becomes important in monitoring and tracking the dissolution phase of each dissolver. The sampling cell contains 10 liquid samplers, a pneumatic sample transfer sender/receiver, a decontamination service station, plastic transfer capsule c… more
Date: January 1, 1980
Creator: Jacobson, M. E.; Carter, J. A. & Paige, D. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Spectrophotometric studies of solutions at elevated temperatures and pressures: status and program for FY1961 and part of FY 1962

Description: A program was initiated on the spectrophotometric study of aqueous solution chemistry. The goal is operation at temperatures up to at least 330 deg C and at pressures up to 200 atm, and to near the critical point if this appears to be feasible. A spectrometer capable of operation under these extreme conditions is being designed. (W.L.H.)
Date: July 19, 1960
Creator: Biggers, R. E. & Chilton, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Excited-state proton-transfer kinetics in 1-naphthol, 1-naphthol-sulfonates, and organometallic complexes

Description: The dissociation of 1-naphthol in aqueous solution occurs so rapidly that the fluorescence from the neutral form, ROH, has been previously described as completely extinguished or hardly noticeable. Apparently nearly all of the fluorescence originates from the naphtholate ion. This paper reports on the proton-transfer characteristics of a series of 1-naphthol compounds, and also reports preliminary data on excited-state proton transfer in an organometallic complex of ruthenium.
Date: July 1, 1980
Creator: Shapiro, S. L.; Winn, K. R. & Clark, J. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Recovery of platinum from concentrated sodium chloride brine by electrodeposition on vitreous carbon

Description: The voltammetric characteristics of Pt(II) and Pt(IV) have been examined at a vitreous carbon electrode in slightly acidic 3M (approx. 15 wt %) NaCl solutions. Pt(IV) is reduced to Pt(II) at approx. 0 V and Pt(II) is reduced to Pt(0) at approx. -0.5 V vs Ag-AgCl. The rate of deposition of platinum metal at -0.5 V is very low on bare carbon, but increases as the coverage of platinum increases. The potential at which hydrogen is evolved in this medium is approx. -0.85 V. A technique has been test… more
Date: January 1, 1984
Creator: Harrar, J.E. & Stephens, F.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Physical-Chemical Treatment of Tar Sand Processing Wastewater: [Final Report, Tasks 3-5]

Description: The dewatering properties of residuals generated by flotation/foam fractionation treatment of TS-1S wastewater were evaluated. The leachate potential was studied for both chemical coagulation and flotation/foam fractionation sludges. A preliminary economic analysis was made comparing selected sludge disposal options and summarizing previously reported economic analysis of the chemical treatment alternatives.
Date: November 1983
Creator: King, Paul H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Physicochemical basis of the Na-K-Ca geothermometer

Description: Regular changes in solution composition were observed experimentally during granite reaction with dilute NaCl (+CaCl/sub 2/) solutions; these changes closely follow the empirical Na-K-Ca geothermometer relationship. Initial minerals forming the granite (quartz, plagioclase, K-feldspar, and biotite) were etched by the reactions. Alteration phases formed include calcium-zeolite at <300/sup 0/C, feldspar overgrowths at >300/sup 0/C, and minor amounts of clay and calcsilicate at all temperatures. A… more
Date: August 1, 1986
Creator: Janecky, D. R.; Charles, R. W.; Bayhurst, Gregory K. & Benjamin, T. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Microbial uptake of uranium, cesium, and radium

Description: The ability of diverse microbial species to concentrate uranium, cesium, and radium was examined. Saccharomyces cerevisiae, Pseudomonas aeruginosa, and a mixed culture of denitrifying bacteria accumulated uranium to 10 to 15% of the dry cell weight. Only a fraction of the cells in a given population had visible uranium deposits in electron micrographs. While metabolism was not required for uranium uptake, mechanistic differences in the metal uptake process were indicated. Uranium accumulated sl… more
Date: January 1, 1980
Creator: Strandberg, G. W.; Shumate, S. E., II; Parrott, J. R., Jr. & McWhirter, D. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Calculated and experimental studies of nonequilibrium solvent extraction of uranium-thorium and uranium-zirconium

Description: The nonequilibrium simultaneous transfer of ions in solvent extraction has been examined experimentally and these results have been compared with the calculated behavior determined using transfer rate constants. In the Th-U system when transferring from 2 M HNO/sub 3/ into 30% tributyl phosphate (TBP) in normal hydrocarbon diluent (NPH), the thorium approaches equilibrium faster than uranium over much of the transfer region. Thus, nonequilibrium operation will not increase the separation factor… more
Date: January 1, 1980
Creator: Mailen, J. C. & Horner, D. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of a metallographic method for tungsten--rhenium. Final report

Description: A metallographic method was developed for chemical vapor deposited tungsten-rhenium alloys consisting of a two-phase structure of ..beta.. solid solution and a finely dispersed A-15 or federite phase. This method provides fast and reliable information on the structure and composition of the CVD deposit.
Date: March 1, 1978
Creator: Rahe, A.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Kinetics of silica polymerization

Description: The polymerization of silicic acid in geothermal brine-like aqueous solutions to produce amorphous silica in colloidal form has been studied experimentally and theoretically. A large amount of high quality experimental data has been generated over the temperature rang 23 to 100{sup 0}C. Wide ranges of dissolved silica concentration, pH, and sodium chloride concentration were covered. The catalytic effects of fluoride and the reaction inhibiting effects of aluminum and boron were studied also. T… more
Date: May 1, 1980
Creator: Weres, O.; Yee, A. & Tsao, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recovery of plutonium from HEPA filters by Ce(IV): promoted dissolution of PuO/sub 2/ and recycle of the cerium promoter

Description: Studies carried out in this investigation included (1) electrolytic production of Ce(IV) from Ce(III), (2) leaching of refractory PuO/sub 2/ from HEPA filters with maintenance of Ce(IV) by anodic oxidation during leaching, and (3) evaluation of methods for contacting the HEPA solids with the leaching solution and for separating the solid residue from the leaching liquor. Anodic oxidation of Ce(III) was accomplished with an electric current efficiency of about 85% at current densities of 0.04 to… more
Date: May 1, 1980
Creator: Scheitlin, F.M. & Bond, W.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Theoretical study of the tube flow of one component sticky foam solutions. [As access deterrents in Safeguard program]

Description: A theoretical model describing the flow of a solution that foams during tube flow was developed. The larger viscosity and smaller density of the foam phase relative to the original solution are responsible for the large resistance to flow that occurs when foaming takes place. The experimental observations of P.B. Rand and K.C. Goettsche that describe a maximum in flow rate as the temperature is increased are explained by the model. The temperature-dependence of the Freon 12 vapor pressure cause… more
Date: April 1, 1977
Creator: Kraynik, A.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of freeze concentration as a process for industrial energy conservation in black liquor, acetic acid, and citrus juice applications. Final report

Description: One of the largest consumers of energy in industrial processing is the equipment that concentrates weak aqueous solutions to stronger more sellable or reusable concentrations. The technical and economic feasibility of applying freeze concentration (that is, crystallization and removal from solution of pure solvent - water) as an alternative to heat evaporation (or distillation) to three industrial applications is established. For each of the applications - pulp mill black liquor concentration, … more
Date: July 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reptation and viscosity in marginal solvents

Description: Understanding of the complex molecular motions of entangled polymers in solution is essential by the concepts of hydrodynamic screening and reptation. Marginal systems are these in which excluded-volume-induced swelling of chains is too weak to allow the use of scaling laws. Purpose of this paper is to extend the Schaefer-Joanny-Pincus scheme to reptation-based quantities. Consequences of the model for viscosity and other measurables are tabulated. (DLC)
Date: January 1, 1982
Creator: Schaefer, D.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Determination of surface oxide compositions on Alloy 600 using Rutherford backscattering

Description: The surface composition of oxides formed on Alloy 600 under conditions similar to those in the primary side of PWR heat exchangers has been studied as a function of potential using Rutherford backscattering and proton inelastic scattering. Electropolished samples of Alloy 600 were exposed at several potentials to a solution of 0.18M H/sub 3/BO/sub 3/(2000 ppM B) with 0.28M LiOH (1.4 ppM Li) at 300/sup 0/C for 450 hours. The potentials relative to an internal hydrogen electrode ranged from -.09 … more
Date: January 1, 1984
Creator: Hanson, A. L.; Isaacs, H. S. & Kraner, H. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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