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Separation of compounds with multiple -OH groups from dilute aqueous solutions via complexation with organoboronate

Description: The complexing extractant agent investigated in this work is 3-nitrophenylboronic acid (NPBA) in its anionic form (NPB). NPBA and Aliquat 336 (quaternary amine) is dissolved in 2-ethyl-l-hexanol, and the extractant is contacted with aq. NaOH. Solutes investigated were 1,2-propanediol, glycerol, fructose, sorbitol and lactic acid. Batch extraction experiments were performed at 25{degree}C. Partition coefficients, distribution ratios and loadings are reported for varying concentrations of solute … more
Date: May 1, 1992
Creator: Chow, Tina Kuo Fung
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Top Value Added Chemicals From Biomass: I. Results of Screening for Potential Candidates from Sugars and Synthesis Gas

Description: This report identifies twelve building block chemicals that can be produced from sugars via biological or chemical conversions. The twelve building blocks can be subsequently converted to a number of high-value bio-based chemicals or materials. Building block chemicals, as considered for this analysis, are molecules with multiple functional groups that possess the potential to be transformed into new families of useful molecules. The twelve sugar-based building blocks are 1,4-diacids (succinic,… more
Date: November 1, 2004
Creator: Werpy, Todd A.; Holladay, John E. & White, James F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Classical Model for Closed-Loop Diagrams of Binary Liquid Mixtures

Description: A classical lattice model for closed-loop temperature-composition phase diagrams has been developed. It considers the effect of specific interactions, such as hydrogen bonding, between dissimilar components. This van Laar-type model includes a Flory-Huggins term for the excess entropy of mixing. It is applied to several liquid-liquid equilibria of nonelectrolytes, where the molecules of the two components differ in size. The model is able to represent the observed data semi-quantitatively, but … more
Date: March 1, 1994
Creator: Schnitzler, J. v. & Prausnitz, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of coal beneficiation process on rheology/atomization of coal water slurries. Quarterly progress report, November 1, 1994--January 31, 1995

Description: The overall objective of this project is to perform experiments to understand the effect of coal beneficiation processes and high shear rheological properties on the atomization of coal-water slurries (CWS). In the atomization studies, the mean drop size of the CWS sprays will be determined at various air to CWS. A correlation between the high shear rheological properties, particle size distributions and the atomization will be made in order to determine the influence of these parameters on the… more
Date: October 1, 1995
Creator: Ohene, F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Inelastic scattering in condensed matter with high intensity Moessbauer radiation. Final technical report, December 1, 1989--November 30, 1992

Description: The QUEGS facility at MURR has produced a number of new results and demonstrated the range of potential applications of high resolution, high intensity Moessbauer scattering. This work has been carried out by both MU and Purdue researchers and includes published results on Na, W, pentadecane, polydimethylsiloxane and other systems, manuscripts submitted on alkali halides (Phys. Rev. B) and accurate Moessbauer lineshape measurements (Phys. Rev. C), and manuscripts in preparation on glycerol, NiA… more
Date: February 1, 1993
Creator: Yelon, W. B. & Schupp, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Approaches to the preservation of human granulocytes by freezing

Description: Because of its simplicity, the FDA assay can be used effectively as a screening test to eliminate procedures and treatments that are damaging to cells. In this context, a number of conclusions can be drawn from the data presented: (1) Exposure to 1 and 2 M glycerol at room temperature damages human granulocytes in a few minutes. Reducing the exposure temperature to 0/sup 0/C reduces the amount of injury substantially. (2) Human granulocytes respond to freezing and thawing in a manner typical of… more
Date: January 1, 1979
Creator: Frim, J. & Mazur, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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[Gamma scattering in condensed matter with high intensity Moessbauer radiation]

Description: This report discusses: quasielastic scattering studies on glycerol; gamma-ray scattering from alkali halides; lattice dynamics in metals; Moessbauer neutron scattering, x-ray diffraction, and macroscopic studies of high {Tc} superconductors containing tungsten; NiAl scattering studies; and atomic interference factors and nuclear Casimir effect.
Date: June 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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DEMONSTRATION OF MIXING AND TRANSFERRING SETTLING COHESIVE SLURRY SIMULANTS IN THE AY-102 TANK

Description: In support of Hanford's waste certification and delivery of tank waste to the Waste Treatment and Immobilization Plant (WTP), Savannah River National Laboratory (SRNL) was tasked by the Washington River Protection Solutions (WRPS) to evaluate the effectiveness of mixing and transferring tank waste in a Double Shell Tank (DST) to the WTP Receipt Tank. The work discussed in this report (Phase III) address the impacts cohesive simulants have on mixing and batch transfer performance. The objective … more
Date: August 4, 2011
Creator: Adamson, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pyrolysis mechanisms. Quarterly report, April-June 1981

Description: The data acquisition system for fast pyrolysis studies is summarized and discussed, based on preliminary applications to fast scans and peak switching of the quadrupole mass spectrometer. The free-jet expansion phenomena of internal-state cooling and clustering are discussed in terms of their relevance to pyrolysis product sampling interpretation. Primary pyrolysis spectra are shown for cotton, wood, and steam-exploded extracted lignin. Both pulsed and steady-state pyrolysis were used to observ… more
Date: December 1, 1981
Creator: Milne, T.A. & Soltys, M.N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cavity-enhanced spontaneous emission rates for rhodamine 6-G in levitated microdroplets

Description: Fluorescence decay kinetics of Rhodamine 6-G molecules in levitated glycerol microdroplets (4--20 microns in diameter) have been investigated to determine the effects of spherical cavity resonances on spontaneous emission rates. For droplet diameters greater than 10 microns, the fluorescence lifetime is essentially the same as in bulk glycerol. As the droplet diameter is decreased below 10 microns, bi-exponential decay behavior is observed with a slow component whose rate is similar to bulk gly… more
Date: January 1, 1992
Creator: Barnes, M.D.; Whitten, W.B.; Ramsey, J.M. (Oak Ridge National Lab., TN (United States)) & Arnold, S. (Polytechnic Inst., of New York, Brooklyn, NY Microparticle Photophysics Lab. (United States))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Membrane Process for Recycling Die Lube from Wastewater Solutions

Description: An active-surface membrane technology was used to separate a die lube manufacturing wastewater stream consisting of various oils, hydrocarbons, heavy metals, and silicones. The ultrafiltration membranes reduced organics from initial oil and grease contents by 20�25X, carbon oxygen demand (COD) by 1.5 to 2X, and total organic carbon (TOC) by 0.6, while the biological oxygen demand (BOD) remained constant. The active-surface membranes were not fouled as badly as non-active-surface systems and the… more
Date: April 30, 2003
Creator: Peterson, E. S.; Trudeau, J.; Cleary, B.; Hackett, M. & Greene, W. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

RELAP5-3D Code Includes Athena Features and Models

Description: Version 2.3 of the RELAP5-3D computer program includes all features and models previously available only in the ATHENA version of the code. These include the addition of new working fluids (i.e., ammonia, blood, carbon dioxide, glycerol, helium, hydrogen, lead-bismuth, lithium, lithium-lead, nitrogen, potassium, sodium, and sodium-potassium) and a magnetohydrodynamic model that expands the capability of the code to model many more thermal-hydraulic systems. In addition to the new working fluids… more
Date: July 1, 2006
Creator: Riemke, Richard A.; Davis, Cliff B. & Schultz, Richard R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Integrated Ecogenomics Study for Bioremediation of Cr(VI) at Hanford 100H Area

Description: Hexavalent chromium is a widespread contaminant found in groundwater. In order to stimulate microbially mediated Cr(VI)-reduction, a poly-lactate compound was injected into Cr(VI)-contaminated aquifers at site 100H at Hanford. Investigation of bacterial community composition using high-density DNA microarray analysis of 16S rRNA gene products revealed a stimulation of Pseudomonas, Desulfovibrio and Geobacter species amongst others. Enrichment of these organisms coincided with continued Cr(VI) d… more
Date: August 12, 2008
Creator: Chakraborty, Romy & Chakraborty, Romy
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Obligate autotrophy in the ammonia oxidizing bacterium Nitrosomonas europaea.

Description: Closing report for project DOE-FG02-03ER15436. The project studied obligate autotrophy in the ammonia oxidizing bacterium Nitrosomonas europaea. Nitrosomonas europaea can obtain all of its energy and reductant for growth from the oxidation of ammonia to nitrite and is, therefore, classified as a chemolithotroph. This bacterium is also an autotroph, which can derive all cellular carbon from carbon dioxide. N. europaea seems incapable of growth with other carbon or energy sources. This restricted… more
Date: January 1, 2006
Creator: Arp, Daniel James & Sayavedra-Soto, Luis Alberto
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

A Membrane Process for Recycling Die Lube from Wastewater Solutions

Description: An active-surface membrane technology was used to separate a die lube manufacturing wastewater stream consisting of various oils, hydrocarbons, heavy metals, and silicones. The ultrafiltration membranes reduced organics from initial oil and grease contents by 20–25X, carbon oxygen demand (COD) by 1.5 to 2X, and total organic carbon (TOC) by 0.6, while the biological oxygen demand (BOD) remained constant. The active-surface membranes were not fouled as badly as non-active-surface systems and the… more
Date: April 1, 2003
Creator: Peterson, Eric S.; Trudeau, Jessica; Cleary, Bill; Hackett, Michael & Greene, William A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Natural convection heat transfer between arrays of horizontal cylinders and their enclosure

Description: The natural convection heat transfer between arrays of horizontal, heated cylinders and their isothermal, cooled enclosure was experimentally investigated. Four different cylinder arrays were used: two in-line and two staggered. Four fluids (air, water, 20 cs silicone, and 96% glycerine) were used with Prandtl numbers ranging from 0.705 to 13090.0. There was no significant change in the Nusselt number between isothermal and constant heat flux conditions of the cylinder arrays. The average heat … more
Date: January 1, 1984
Creator: Weaver, R.A. & Warrington, R.O.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Results of the 2007 B100 Quality Survey

Description: In a 2007 analysis of samples from 52% of U.S. biodiesel (B100) producers, 90% met ASTM and other specifications for critical engine performance properties and for elements that harm emission controls.
Date: March 1, 2008
Creator: Alleman, T. L. & McCormick, R. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aerated atomization of coal water slurry

Description: In order to better understand the process of slurry atomization, it is important to observe the influence of fluid non-Newtonian rheological behavior on the spray formation process. As a first step, glycerin-water solutions have been atomized. This report describes findings of photographs taken during atomization. 19 figs.
Date: January 5, 1989
Creator: Buckner, H.N.; Sojka, P.E. & Lefebvre, A.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aerated atomization of coal-water slurry fuels

Description: In order to observe the effects of rheology on the atomization of highly viscous non-Newtonian liquids, glycerin-water solutions and cellulose-glycerin-water solutions have been atomized. In this series of tests, nozzle pressure, air-liquid ratio and liquid viscosity were altered, and the effects were observed. 14 figs.
Date: September 30, 1988
Creator: Buckner, H.N.; Sojka, P.E. & Lefebvre, A.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Roles of Additives and Surface Control in Slurry Atomization

Description: Objectives: of this projects are to: promote further understanding of the mechanisms and the roles of additives in airblast atomization of coal water slurry (CWS); and investigate the impacts of coal particle surface properties and interparticle forces on CWS rheology and coal cleanability. This study covers rheology and airblast atomization of micronized coal water slurry. Airblast atomization is carried out in a bench scale unit equipped with a twin-fluid jet atomizer and a Malvern Particle S… more
Date: January 1, 1990
Creator: Tsai, S. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Top Value Added Chemicals from Biomass: Volume I -- Results of Screening for Potential Candidates from Sugars and Synthesis Gas

Description: This report identifies twelve building block chemicals that can be produced from sugars via biological or chemical conversions. The twelve building blocks can be subsequently converted to a number of high-value bio-based chemicals or materials. Building block chemicals, as considered for this analysis, are molecules with multiple functional groups that possess the potential to be transformed into new families of useful molecules. The twelve sugar-based building blocks are 1,4-diacids (succinic,… more
Date: August 1, 2004
Creator: Werpy, T. & Petersen, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aerated atomization of coal-water slurry fuels

Description: Despite the body of work describing the performance of effervescent atomizers, its potential for use with coal water slurries (CWS) had not been evaluated prior to this study. This programs was therefore undertaken: to demonstrate that effervescent atomization can produce CWS sprays with mean drop sizes below 50 {mu}m; to determine a lower size limit for effervescent atomizer produced CWS sprays; to determine the mechanism(s) responsible for the formation of effervescent atomizer produced spray… more
Date: April 1, 1989
Creator: Buckner, H.N.; Sojka, P.E. & Lefebvre, A.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Center for Catalysis at Iowa State University

Description: The overall objective of this proposal is to enable Iowa State University to establish a Center that enjoys world-class stature and eventually enhances the economy through the transfer of innovation from the laboratory to the marketplace. The funds have been used to support experimental proposals from interdisciplinary research teams in areas related to catalysis and green chemistry. Specific focus areas included: • Catalytic conversion of renewable natural resources to industrial materials • D… more
Date: October 17, 2006
Creator: Kraus, George A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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