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Anion exchange of 58 elements in hydrobromic acid and in hydriodic acid

Description: Anion exchange distributions of 58 elements have been measured from 0.1-8.7M HBr and from 0.1-7.4M HI onto three strong-base resins, 8 and 4% cross-linked and macroporous. Data were obtained by 16- to 18-h dynamic batch contacts. Anion exchange in these media is compared to that in HCl. The effect of resin cross-linkage is considerably greater in HI media than in HBr and HCl media. Examples are presented of potentially useful separations using HBr and HI media alone and in combination with HCl.
Date: February 1, 1978
Creator: Marsh, S. F.; Alarid, J. E.; Hammond, C. F.; McLeod, M. J.; Roensch, F. R. & Rein, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Design requirements for uranium ion exchange from acidic solutions in a fluidized system

Description: A fluidized, countercurrent ion-exchange system was developed, operated, and evaluated by the Bureau of Mines in support of its objective to help assure an adequate uranium supply for future national needs. The system consisted of integrated multiple-compartment absorption and elution columns in which the solution flows are continuous, except for short periods when resin increments are withdrawn. The exchange of uranyl sulfate between a simulated acid-leach-uranium solution and a strong-base, i… more
Date: January 1, 1974
Creator: Traut, D.E.; Nichols, I.L. & Seidel, D.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of cation exchange on the subsequent reactivity of lignite chars to steam. [108 references]

Description: The purpose of this investigation is to determine the role which cations in coal play in the subsequent reactivity of chars. It is hoped that this investigation will aid in an understanding of the catalytic nature of inorganic constituents in coal during its gasification. It was found that increased heat treatment temperature decreased reactivity. The decrease in reactivity was shown to be due, at least in part, to the changes in the nature of the cation with increased heat treatment temperatur… more
Date: March 1, 1977
Creator: Hippo, E. J. & Walker, Jr., P. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Actinide partitioning and transmutation program. Progress report, July 1--September 30, 1977

Description: In Purex process modifications, two cold runs with mixer-settlers were made on the extraction and stripping of ruthenium and zirconium without the presence of uranium. Efforts in actinide recovery from solids were directed toward the determination of dissolution parameters in various reagents for /sup 241/Am and /sup 239/Pu oxide mixtures, /sup 233/U oxide, /sup 237/Np oxide, /sup 244/Cm oxide, /sup 232/Th oxide, and PuO/sub 2/. Studies in americium-curium recovery with OPIX (oxalate precipitat… more
Date: February 1, 1978
Creator: Tedder, D.W. & Blomeke, J.O. (comps.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tests of a Higgins contactor for the engineering-scale resin loading of uranium

Description: The loading of uranium on weak-acid ion exchange resin is a basic step in the production of fuel particles for high-temperature gas-cooled reactors (HTGRs). In the work reported here, an engineering-scale continuous resin loader (2-in.-ID Higgins contactor) was tested with existing engineering-scale process equipment. The Higgins contactor was first successfully used to convert Na/sup +/-form resin to the H/sup +/-form; then it was evaluated as a uranium loader. Results show that the 2-in.-ID H… more
Date: January 1, 1978
Creator: Spence, R. D. & Haas, P. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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ORNL process waste treatment plant modifications

Description: The ORNL Process Waste Treatment Plant removes low levels of radionuclides (primarily Cs-137 and Sr-90) from process waste water prior to discharge. The previous plant operation used a scavenging precipitaton - ion exchange process which produced a radioactive sludge. In order to eliminate the environmental problems associated with sludge disposal, the plant is being converted to a new ion exchange process without the precipitation process.
Date: January 1, 1982
Creator: Bell, J.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Specifications for the development of a fully three-dimensional numerical groundwater model for regional mass transport of radionuclides from a deep waste repository

Description: Specifications are given which are necessary to develop a three-dimensional numerical model capable of simulating regional mass transport of radionuclides from a deep waste repository. The model to be developed will include all of the significant mass transport processes including flow, chemical, and thermal advection, mechanical dispersion, molecular diffusion, ion exchange reactions, and radioactive decay. The model specifications also include that density and viscosity fluid properties be fu… more
Date: April 1, 1980
Creator: Prickett, T.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Americium purification by a combined anion exchange and bidentate organophosphorus solvent extraction process. [Patent application]

Description: Americium is separated from mixtures containing plutonium, other actinides, and other non-lanthamide impurities, by a combined process of anion exchange resin sorption to remove plutonium, and a bidentate organophosphorus solvent extraction of americium of the anion exchange resin effluent. Dihexyl-N,N-diethylcarbamylmethylenephosphonate is a preferred solvent. The initial mixture may be subjected to a cation exchange operation to remove monovalent impurities. The process is especially effectiv… more
Date: April 10, 1981
Creator: Navratil, J.D. & Martella, L.L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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Determining cerium in plutonium by anion exchange and x-ray fluorescence

Description: This report describes a procedure for determining cerium in plutonium using an anion-exchange separation and x-ray fluorescence. We add lanthanum to the plutonium solution as an internal standard, oxidize the plutonium to Pu/sup /plus/4/, and pass the solution through an anion-exchange column with 8M HCl. The Pu/sup /plus/4/ sorbs to the resin, and the cerium and lanthanum pass through the column completely. We evaporate the solution containing the cerium and the lanthanum to 0.5 mL for pipetti… more
Date: May 1, 1988
Creator: Martell, C. J. & Hansel, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Status of /sup 241/Am recovery and purification at Los Alamos Scientific Laboratory

Description: Americium recovery was initiated at Los Alamos Scientific Laboratory (LASL) in the late 1940's. The early procedures separated gram quantities of americium from large amounts of impurities including plutonium and the rare earths. Ion exchange procedures were developed for further purification. Until recently, no routine processing of americium has been done at LASL for several years. The increasing demand for americium in oil-well logging instruments and other uses led LASL to develop and insta… more
Date: January 1, 1980
Creator: Ramsey, H. D.; Clifton, D. G.; Hayter, S. W.; Penneman, R. A. & Christensen, E. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Silver recovery system data

Description: In August of 1990 the Savannah River Site Photography Group began testing on a different type of silver recovery system. This paper describes the baseline study and the different phases of installation and testing of the system.
Date: August 26, 1991
Creator: Boulineau, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Conceptual model for regional radionuclide transport from a basalt repository site. Final draft, technical memorandum

Description: This technical memorandum was prepared to: (1) describe a typical basalt radionuclide repository site, (2) describe geologic and hydrologic processes associated with regional radionuclide transport in basalts, (3) define the parameters required to model regional radionuclide transport from a basalt repository site, and (4) develop a ''conceptual model'' of radionuclide transport from a basalt repository site. In a general hydrological sense, basalts may be described as layered sequences of aqui… more
Date: May 23, 1980
Creator: Walton, W.C.; Voorhees, M.L. & Prickett, T.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Procedure for the analysis of americium in complex matrices

Description: A radioanalytical procedure for the analysis of americium in complex matrices has been developed. Clean separations of americium can be obtained from up to 100 g of sample ash, regardless of the starting material. The ability to analyze large masses of material provides the increased sensitivity necessary to detect americium in many environmental samples. The procedure adequately decontaminates from rare earth elements and natural radioactive nuclides that interfere with the alpha spectrometric… more
Date: February 1, 1978
Creator: Knab, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cation exchange at pressures up to 400 M Pascals

Description: The effects of pressures up to 400 MPa (approximately 60,000 psi) on the capacity factors of sodium, potassium, rubidium, lithium and magnesium ions were studied using nitrate eluents. The capacity factors, corrected for compression, were changed by almost 25% for rubidium and potassium ions by going from atmospheric pressure to 350 MPa. The corrected capacity factor for magnesium ion changed 15%, whereas those for lithium and sodium were essentially unchanged. The effect was attributed to chan… more
Date: January 1, 1977
Creator: Prukop, G. & Rogers, L. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Actinide Partitioning and Transmutation Program. Progress report, April 1--June 30, 1977

Description: Experimental work on the 16 tasks comprising the Actinide Partitioning and Transmutation Program was continued. Summaries of work are given on Purex Process modifications, actinide recovery, Am-Cm recovery, radiation effects on ion exchangers, LMFBR transmutation studies, thermal reactor transmutation studies, fuel cycle studies, and partitioning-transmutation evaluation. (JRD)
Date: October 1, 1977
Creator: Tedder, D. W. & Blomeke, J. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Experimental data developed to support the selection of a treatment process for West Valley alkaline supernatant

Description: At the request of West Valley Nuclear Services Co., Inc., the Pacific Northwest Laboratory (PNL) has studied alternative treatment processes for the alkaline PUREX waste presently being stored in Tank 8D2 at West Valley, New York. Five tasks were completed during FY 1983: (1) simulation and characterization of the alkaline supernatant and sludge from the tank. The radiochemical and chemical distributions between the aqueous and solid phase were determined, and the efficiency of washing sludge w… more
Date: January 1, 1984
Creator: Bray, L.A.; Holton, L.K.; Myers, T.R.; Richardson, G.M. & Wise, B.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Quarterly report, 1 October-31 December 1979

Description: Progress is reported in the following areas of research: characterization of organic pollutants emitted by fossil fuel processing and energy generating plants; environmental effects of using municipal solid wastes as a supplementary fuel; microbiological air quality at the Ames Municipal Solid Waste Recovery System; solid waste to methane environmental study; x-ray and ultraviolet excited optical luminescence (XEOL, UVEOL) of carcinogens - analytical possibilities; laser pumped luminescence (LP… more
Date: March 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Systems studies on the extraction of uranium from seawater

Description: This report summarizes the work done at MIT during FY 1981 on the overall system design of a uranium-from-seawater facility. It consists of a sequence of seven major chapters, each of which was originally prepared as a stand-alone internal progress report. These chapters trace the historical progression of the MIT effort, from an early concern with scoping calculations to define the practical boundaries of a design envelope, as constrained by elementary economic and energy balance consideration… more
Date: November 1, 1981
Creator: Driscoll, M.J. & Best, F.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Selection and evaluation of processes for recovery of beneficial isotopes from commerical reactor wastes

Description: Conceptual processes were prepared for recovering isotopes from stored high-level liquid wastes to define equipment and facility requirements. Capital costs were estimated for each process. Four different facilities were studied for potential isotope recovery. The processes were for the recovery of: cesium only; strontium only; cesium and strontium; and cesium, strontium, promethium, americium, curium, neptunium, and the platinum metals. The selection of these recovery processes was determined … more
Date: December 1, 1977
Creator: Davis, D.K.; Partridge, J.A. & Koski, O.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Technological options for management of hazardous wastes from US Department of Energy facilities

Description: This report provides comprehensive information on the technological options for management of hazardous wastes generated at facilities owned or operated by the US Department of Energy (DOE). These facilities annually generate a large quantity of wastes that could be deemed hazardous under the Resource Conservation and Recovery Act (RCRA). Included in these wastes are liquids or solids containing polychlorinated biphenyls, pesticides, heavy metals, waste oils, spent solvents, acids, bases, carci… more
Date: August 1, 1982
Creator: Chiu, S.; Newsom, D.; Barisas, S.; Humphrey, J.; Fradkin, L. & Surles, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Defluoridation study for Boise geothermal water

Description: Methods of removing fluorides from water are reviewed and recommendations are made for treating geothermal water used by the Boise Geothermal Project, Boise, Idaho. The Boise geothermal water except for its high fluoride content would be high quality, suitable for primary drinking water. Fluoride ranges from about 15 to 25 mg/l in water from various wells in the Boise region where the Project plans to obtain hot water. Four techniques for removing fluorides from water have been studied extensiv… more
Date: June 3, 1980
Creator: Rigdon, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Dual mechanism bifunctional polymers for the complexation of lanthanides and actinides. [Phosphinic resins]

Description: Phosphinic acid ion exchange/redox resins are synthesized by the reaction between polystyrene beads and phosphorus trichloride followed by base hydrolysis. The reaction requires a temperature of 73/sup 0/C for full functionalization to occur. The effect of lower functionalization temperatures on resin acid capacity was determined and the concomitant effect on ion exchange investigated. The acid capacity was found to vary from 1.09 mequiv/g to 4.79 mequiv/g in the functionalization temperature r… more
Date: January 1, 1985
Creator: Alexandratos, S.D.; Quillen, D.R. & McDowell, W.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Biodegradation of ion-exchange media

Description: The purpose of this study was to investigate further the potential for ion-exchange media (resin beads or powdered filter media) to support biological growth. A mixed microbial culture was grown from resin wastes obtained from the BNL HFBR by mixing the resin with a nutrient salt solution containing peptone and yeast extract. Bacterial and fungal growths appeared in the solution and on the resins after 7 to 10 days incubation at 337)degree)C. The mixed microbial cultures were used to inoculate … more
Date: January 1, 1988
Creator: Bowerman, B.S.; Clinton, J.H. & Cowdery, S.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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