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Anion-exchange resin-based desulfurization process

Description: Under DOE Grant No. FG22-90PC90309, the University of Tennessee Space Institute (UTSI) is contracted to further develop its anion-exchange, resin-based desulfurization concept to desulfurize alkali metal sulfates. From environmental as well as economic viewpoints, it is necessary to remove soluble sulfates from the wastes created by flue gas desulfurization systems. In order to do this economically, a low-cost desulfurization process for spent sorbents is necessary. UTSI's anion-exchange resin-… more
Date: January 1, 1992
Creator: Sheth, A.C.; Strevel, S.D. & Dharmapurikar, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reactivity of Young Chars via Energetic Distribution Measurements

Description: In this report, we present some preliminary work performed on the effect of CO{sub 2} partial pressure on temperature programmed desorption spectra from CO{sub 2}-oxidized chars. The following was accomplished during the reporting period: Temperature programmed desorption (TPD) experiments were conducted on oxidized resin and Wyodak coal char samples gasified under varying different CO{sub 2} partial pressures. The following observations were made: CO{sub 2} partial pressure can be an important… more
Date: January 1, 1991
Creator: Calo, J. M.; Zhang, L. H.; Rachel, W. G. & Lilly, W. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Anion-exchange resin-based desulfurization process

Description: Under the current grant (FG22-90PC90309), the University of Tennessee Space Institute (UTSI) will carry out the necessary bench scale experiments to further develop it anion-exchange, resin-based desulfurization concept to desulfurize alkali metal sulfates. In particular, it is planned to screen commercially available resins and then carry out process optimization work with three selected resins. Further optimization of the resin regeneration step as well as evaluation of the effect of various … more
Date: January 1, 1991
Creator: Sheth, A.C. & Strevel, S.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Selective flotation of fossil resin from western coal

Description: Economic analysis of this fossil resin project mainly focused on the flotation plant which is intended to be designed with data obtained from the current proof-of-concept flotation test program. It is believed that the analysis of this step is fairly accurate. The other two economic aspects of fossil in resin recovery/utilization are refining and marketing. Cost data used for refining were from an estimated base and are believed to have a large variance. Marketing data used were obtained from t… more
Date: March 30, 1992
Creator: Jensen, G. F. & Miller, J. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Cure Kinetics and Processing Parameters of Neat and Reinforced High Performance Epoxy Resins: Evaluation of Techniques

Description: Kinetic equation parameters for the curing reaction of a commercial glass fiber reinforced high performance epoxy prepreg composed of the tetrafunctional epoxy tetraglycidyl 4,4-diaminodiphenyl methane (TGDDM), the tetrafunctional amine curing agent 4,4’-diaminodiphenylsulfone (DDS) and an ionic initiator/accelerator, are determined by various thermal analysis techniques and the results compared. The reaction is monitored by heat generated determined by differential scanning calorimetry (DSC). … more
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Date: December 1999
Creator: Bilyeu, Bryan
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Further development of IDGS: Isotope dilution gamma-ray spectrometry

Description: The isotope dilution gamma-ray spectrometry (IDGS) technique for determining the plutonium concentration and isotopic composition of highly radioactive spent-fuel dissolver solutions has been further developed. Both the sample preparation and the analysis have been improved. The plutonium isotopic analysis is based on high-resolution, low-energy gamma-ray spectrometry. The plutonium concentration in the dissolver solutions then is calculated from the measured isotopic differences among the spik… more
Date: January 1, 1991
Creator: Li, T. K.; Parker, J. L.; Kuno, Y.; Sato, S.; Kamata, M. & Akiyama, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The comparative effects of gamma radiation and in situ alpha particles on five strong-base anion exchange resins

Description: The effects of external gamma radiation and in situ alpha particles were measured on a recently available, macroporous, strong-base polyvinylpyridine resin and on four strong-base polystyrene anion exchange resins. Each resin was irradiated in 7 M nitric acid to 1--10 megaGray of gamma radiation from external {sup 60}Co, or to 5--14 megaGray of alpha particles from sorbed {sup 238}Pu. Each irradiated resin was measured for changes in dry weight, wet volume, weak-base and strong-base chloride ex… more
Date: January 1, 1991
Creator: Marsh, S.F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of isotope dilution gamma-ray spectrometry for plutonium analysis

Description: We are studying the feasibility of determining the plutonium concentration and isotopic distribution of highly radioactive, spent-fuel dissolver solutions by employing high-resolution gamma-ray spectrometry. The study involves gamma-ray plutonium isotopic analysis for both dissolver and spiked dissolver solution samples, after plutonium is eluted through an ion-exchange column and absorbed in a small resin bead bag. The spike is well characterized, dry plutonium containing {approximately}98% of… more
Date: January 1, 1991
Creator: Li, T. K.; Parker, J. L.; Kuno, Y.; Sato, S.; Kurosawa, A. & Akiyama, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Anion-exchange resin-based desulfurization process

Description: The University of Tennessee Space Institute (UTSI) has been directed to further develop an anion-exchange, resin-based desulfurization concept. It is necessary that the soluble sulfates of alkali metal sorbents be desulfurized (regenerated) and recycled to make regenerative flue gas desulfurization options more attractive. In order to achieve this, a low-temperature, low-cost desulfurization process to reactivate spent alkali metal sorbents is necessary. UTSI's anion-exchange, resin-based conce… more
Date: January 1, 1991
Creator: Sheth, A.C. & Strevel, S.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Engineering Study for the Treatment of Spent Ion Exchange Resin Resulting From Nuclear Process Applications

Description: This document is an engineering study of spent ion exchange resin treatment processes with the purpose of identifying one or more suitable treatment technologies. Classifications of waste considered include all classes of low-level waste (LLW), mixed LLW, transuranic (TRU) waste, and mixed TRU waste. A total of 29 process alternatives have been evaluated. Evaluation parameters have included economic parameters (both total life-cycle costs and capital costs), demonstrated operability, environmen… more
Date: September 1, 1990
Creator: Place, B.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of polymer concrete vaults for natural gas regulator stations

Description: Vaults for natural gas regulator stations have traditionally been fabricated with steel-reinforced portland cement concrete. Since these vaults are installed below ground level, they are usually coated with a water-proofing material to prevent the ingress of moisture into the vault. In some cases, penetrations for piping that are normally cast into the vault do not line up with the gas lines in the streets. This necessitates off-setting the lines to line up with the penetrations in the vault or… more
Date: August 1, 1990
Creator: Fontana, J.J.; Miller, C.A.; Reams, W. & Elling, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Prototype casting fabrication by stereolithography

Description: A new product development technology is emerging which could have a major impact on the investment casting industry. It's identified by several names, the most common of which is STEREOLITHOGRAPHY.'' This technology involves a three-dimensional printing process which will yield plastic parts (polymer models) from solid, surface, or wireframe CAD files. The concept links a CAD database to a process which guides a laser beam to solidify liquid photo-curable polymer into a programmed shaped. The p… more
Date: November 1, 1990
Creator: Cromwell, W.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Adsorption characteristics of PCBs to resins, whole cells, cell and tissue components, and biomolecules

Description: Polychlorinated biphenyls (PCBs) have been designated hazardous chemicals by the US Environmental Protection Agency (EPA). Although PCBs and PCB-containing oils have not been in use since 1977, they persist in the environment. They are known to be absorbed by various aquatic organisms, birds, and mammals. The nature of these affinities is not known. In this study, the Institute of Gas Technology (IGT) compared the adsorption phenomenon of PCBs on commercial resins, whole bacterial cells, cell a… more
Date: January 1, 1990
Creator: Kelley, R. L.; Conrad, J. & Akin, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Treatment options and flow sheets for ORNL low-level liquid waste supernate

Description: Low-level liquid waste (LLLW) is currently contained in ten 50,000-gal storage and process tanks at Oak Ridge National Laboratory (ORNL) and as residual heels in an number of older tanks that are no longer in active use. Plans are being formulated to treat these wastes, along with similar LLLW that will be generated in the future, to yield decontaminated effluents that can be disposed of and stable solid waste forms that can be permanently stored. The primary purpose of this report is to summar… more
Date: December 1, 1991
Creator: Campbell, D.O. & Lee, D.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Removal of mercury from waste water: Large scale performance of an ion exchange process

Description: The Integrated Defense Waste Processing Facility (DWPF) Melter System (IDMS), located at the Savannah River Site (SRS), provides an engineering scale, non-radioactive demonstration of the DWPF. The DWPF will soon be used to immobilize high level radioactive waste (HLW) in borosilicate glass. Part of the IDMS charter is to demonstrate the removal of mercury from simulated HLW on an engineering-scale. An ion exchange facility (IEF), utilizing Duolite{trademark} GT-73 ion exchange resin, was desig… more
Date: January 1, 1990
Creator: Ritter, J. A. & Bibler, J. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Anion-exchange resin-based desulfurization process

Description: The University of Tennessee Space Institute (UTSI) has a Department of Energy grant to further develop the Institute's anion-exchange resin-based flue gas, desulfurization concept. The developmental program proposed includes screening of commercially available resins to select three candidate resins for further study. These three resins will undergo a series of experiments designed to test the resins' performance under different process conditions (including the use of spent MHD seed material).… more
Date: January 1, 1991
Creator: Sheth, A.C. & Strevel, S.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Selective flotation of fossil resin from Western coal

Description: Technical activities for the fourth quarter involved efforts by both the University of Utah and Advanced Processing Technologies, Inc. Laboratory research at the University of Utah was primarily concerned with surface chemistry/resin characterization, which has emphasized Fourier transform infrared analysis in the past quarter. APT's major activities included proof-of-concept plant testing of the fossil resin flotation circuit. (VC)
Date: October 15, 1991
Creator: Jensen, G. F. & Miller, J. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reactivity of young chars via energetic distribution measurements

Description: In this report, we present some preliminary work performed on the effect of inert'', diluent gases on the O{sub 2} and CO{sub 2} reactivities of chars, and the corresponding temperature programmed desorption spectra of the oxygen surface complexes. We also present some of the initial data obtained by operating the TPD reactor under vacuum. The following was accomplished during the reporting period: TPD spectra were obtained resin for resin and Wyodak coal char samples gasified in mixtures of va… more
Date: January 1, 1991
Creator: Calo, J.M.; Zhang, L.H.; Rachel, W.G. & Lilly, W.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of pH on the release of radionuclides and chelating agents from cement-solidified decontamination ion-exchange resins collected from operating nuclear power stations

Description: Data are presented on the physical stability and leachability of radionuclides and chelating agents from cement-solidified decontamination ion-exchange resin wastes collected from two operating commercial light water reactors. Small-scale waste--form specimens collected during solidifications performed at the Brunswick Steam Electric Plant Unit 1 and at the James A. FitzPatrick Nuclear Power Station were leach-tested and subjected to compressive strength testing in accordance with the Nuclear R… more
Date: June 1, 1991
Creator: McIsaac, C.V.; Akers, D.W. & McConnell, J.W. (EG and G Idaho, Inc., Idaho Falls, ID (USA))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High octane ethers from synthesis gas-derived alcohols. [Catalyst names: Amberlyst-15, BioRad AG 50WX2, Nafion-H microsaddles, and Purolite 150]

Description: The objective of the proposed research is to synthesize high octane ethers, primarily methyl isobuty ether (MIBE) and methyl tertiary butyl ether (MTBE), directly from H{sub 2}/CO/CO{sub 2} coal-derived synthesis gas via alcohol mixtures that are rich in methanol and 2-methyl-1-butanol (isobutanol). The overall scheme involves gasification of coal, purification and shifting of the synthesis gas, higher alcohol synthesis, and direct synthesis of ethers.
Date: November 1, 1991
Creator: Klier, K.; Herman, R. G.; Johannson, M.; Feeley, O. C.; Bogar, S.; Lawson, E. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Treatment of radioactive laboratory waste for mercury removal

Description: Routine analyses of Savannah River Laboratory wastes at the Savannah River Site (SRS) occasionally reveal mercury concentrations in the waste in excess of the 0.200 {mu}g/L RCRA limit. A polystyrene/divinylbenzene ion exchange resin with thiol functional groups, Duolite GT-73, has been demonstrated effective, through a special, permitted decontamination project, for the removal of dissolved mercury from this laboratory waste. As a result of this demonstration, the resin is in use or under consi… more
Date: January 1, 1990
Creator: Osteen, A. B. & Bibler, J. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Fugitive dust control experiments using soil fixatives on vehicle traffic surfaces

Description: This report presents the results of engineering scale dust control experiments using soil fixative for contamination control during handling of transuranic waste. These experiments focused on controlling dust during retrieval operations of buried waste where waste and soil are intimately mixed. Sources of dust generation during retrieval operations include digging, dumping, and vehicle traffic. Because contaminants are expected to attach to soil particles and move with the generated dust, contr… more
Date: August 1, 1992
Creator: Winberg, M. R. & Wixom, V. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sizing a water softener for aquifer thermal energy storage

Description: In aquifer thermal energy storage (ATES) installations, ground water is circulated between an aquifer and heat exchangers via a well field. It is often necessary to soften the water to prevent carbonate scaling in pipes, heat exchangers, and well screens. Most ATES projects requiring water softening will be best served by using synthetic ion-exchange resins. The size of the resin beds, the resin regeneration cycle, and the amount of NaCl brine used in each regeneration depend on several factors… more
Date: March 1, 1993
Creator: Hall, S. H. & Jenne, E. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Polymer-based separations: Synthesis and application of polymers for ionic and molecular recognition

Description: Polymer-based separations have utilized resins such as sulfonic, acrylic, and iminodiacetic acid resins and the XAD series. Selective polymeric reagents for reaction with a targeted metal ion were synthesized as polymers with two different types of functional groups, each operating on the ions through a different mechanism. There are 3 classes of DMBPs (dual mechanism bifunctional polymers). Research during this period dealing with metal ion recognition focused on two of these classes (reductio… more
Date: January 1, 1992
Creator: Alexandratos, S.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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