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2007 SB14 Source Reduction Plan/Report

Description: Aqueous solutions (mixed waste) generated from various LLNL operations, such as debris washing, sample preparation and analysis, and equipment maintenance and cleanout, were combined for storage in the B695 tank farm. Prior to combination the individual waste streams had different codes depending on the particular generating process and waste characteristics. The largest streams were CWC 132, 791, 134, 792. Several smaller waste streams were also included. This combined waste stream was treated… more
Date: July 24, 2007
Creator: Chang, L
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Low-frequency asymptotic analysis of seismic reflection from afluid-saturated medium

Description: Reflection of a seismic wave from a plane interface betweentwo elastic media does not depend on the frequency. If one of the mediais poroelastic and fluid-saturated, then the reflection becomesfrequency-dependent. This paper presents a low-frequency asymptoticformula for the reflection of seismic plane p-wave from a fluid-saturatedporous medium. The obtained asymptotic scaling of the frequency-dependentcomponent of the reflection coefficient shows that it is asymptoticallyproportional to the sq… more
Date: April 14, 2004
Creator: Silin, D.B.; Korneev, V.A.; Goloshubin, G.M. & Patzek, T.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Clean-in-Place and Reliability Testing of a Commercial 12.5-cm Annular Centrifugal Contactor at the INL

Description: The renewed interest in advancing nuclear energy has spawned the research of advanced technologies for recycling nuclear fuel. A significant portion of the advanced fuel cycle includes the recovery of selected actinides by solvent extraction methods utilizing centrifugal contactors. Although the use of centrifugal contactors for solvent extraction is widely known, their operation is not without challenges. Solutions generated from spent fuel dissolution contain unknown quantities of undissolved… more
Date: September 1, 2007
Creator: Mann, N. R.; Garn, T. G.; Meikrantz, D. H.; Law, J. D. & Todd, T. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Microfabricated Instrumentation for Chemical Sensing in Industrial Process Control

Description: The monitoring of chemical constituents in manufacturing processes is of economic importance to most industries. The monitoring and control of chemical constituents may be of importance for product quality control or, in the case of process effluents, of environmental concern. The most common approach now employed for chemical process control is to collect samples which are returned to a conventional chemical analysis laboratory. This project attempts to demonstrate the use of microfabricated s… more
Date: June 1, 2000
Creator: Ramsey, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrochemical arsenic remediation for rural Bangladesh

Description: Arsenic in drinking water is a major public health problem threatening the lives of over 140 million people worldwide. In Bangladesh alone, up to 57 million people drink arsenic-laden water from shallow wells. ElectroChemical Arsenic Remediation(ECAR) overcomes many of the obstacles that plague current technologies and can be used affordably and on a small-scale, allowing for rapid dissemination into Bangladesh to address this arsenic crisis. In this work, ECAR was shown to effectively reduce 5… more
Date: January 1, 2009
Creator: Addy, Susan Amrose
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

X-Ray CT of Highly-Attenuating Objects: 9- or 15- MV Spectra?

Description: We imaged-highly attenuating test objects in three dimensions with 9-MV (at LLNL) and 15-MV (at Hill Air Force Base) x-ray spectra. While we used the same detector and motion control, there were differences that we could not control in the two radiography bays and in the sources. The results show better spatial resolution for the 9-MV spectrum and better contrast for the 15-MV spectrum. The 15-MV data contains a noise pattern that obfuscates the data. It is our judgment that if sufficient atten… more
Date: August 29, 2005
Creator: Stone, G; Trebes, J; Perry, R; Schneberk, D & Logan, C
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Revisiting the Cape Cod Bacteria Injection Experiment Using a Stochastic Modeling Approach

Description: Bromide and resting-cell bacteria tracer tests carried out in a sand and gravel aquifer at the USGS Cape Cod site in 1987 were reinterpreted using a three-dimensional stochastic approach and Lagrangian particle tracking numerical methods. Bacteria transport was strongly coupled to colloid filtration through functional dependence of local-scale colloid transport parameters on hydraulic conductivity and seepage velocity in a stochastic advection-dispersion/attachment-detachment model. Information… more
Date: November 22, 2006
Creator: Maxwell, R M; Welty, C & Harvey, R W
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Mechanisms of Formation Damage in Matrix Permeability Geothermal Wells

Description: Matrix permeability geothermal formations are subject to damage during well drilling and completion. Near well bore permeability impairment that may occur as a result of particulate invasion, and chemical interaction between formation clays, drilling mud filtrates and fohation brines is investigated. Testing of various filtration chemistries on the permeability of East Mesa sandstone indicates that permeability is significantly impaired by the flow of low salinity formation brines. This damage … more
Date: January 1, 1981
Creator: Bergosh, J. L.; Wiggins, R. B.; Enniss, D. O. & Jones, A. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

EFFICACY OF FILTRATION PROCESSES TO OBTAIN WATER CLARITY AT K EAST SPENT NUCLEAR FUEL (SNF) BASIN

Description: The objective is to provide water clarity to the K East Basin via filtration processes. Several activities are planned that will challenge not only the capacity of the existing ion exchange modules to perform as needed but also the current filtration system to maintain water clarity. Among the planned activities are containerization of sludge, removal of debris, and hydrolasing the basin walls to remove contamination.
Date: September 28, 2006
Creator: JB, DUNCAN
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Amphotericin B induced interdigitation of apolipoprotein stabilized nanodisk bilayers

Description: Amphotericin B nanodisks (AMB-ND) are ternary complexes of AMB, phospholipid (PL) and apolipoprotein organized as discrete nanometer scale disk-shaped bilayers. In gel filtration chromatography experiments, empty ND lacking AMB elute as a single population of particles with a molecular weight in the range of 200 kDa. AMB-ND formulated at a 4:1 PL:AMB weight ratio, separated into two peaks. Peak 1 eluted at the position of control ND lacking AMB while the second peak, containing all of the AMB p… more
Date: December 7, 2006
Creator: Nguyen, T; Weers, P M; Sulchek, T; Hoeprich, P D & Ryan, R O
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

PLUTONIUM-URANIUM EXTRACTION (PUREX) FACILITY ALARACT DEMONSTRATION FOR FILTER HOUSING

Description: This document presents an As Low As Reasonably Achievable Control Technology (ALARACT) demonstration for evaluating corrosion on the I-beam supporting filter housing No.9 for the 291-A-l emission unit of the Plutonium-Uranium Extraction (PUREX) Facility, located in the 200 East Area of the Hanford Site. The PUREX facility is currently in surveillance and maintenance mode. During a State of Washington, Department of Health (WDOH) 291-A-l emission unit inspection, a small amount of corrosion was … more
Date: November 25, 2008
Creator: GJ, LEBARON
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ultra-low Sulfur Reduction Emission Control Device/Development of an On-board Fuel Sulfur Trap

Description: Honeywell has completed working on a multiyear program to develop and demonstrate proof-of-concept for an 'on-vehicle' desulfurization fuel filter for both light duty and heavy-duty diesel engines. Integration of the filter into the vehicle fuel system will reduce the adverse effects sulfur has on post combustion emission control devices such as NOx adsorbers. The NOx adsorber may be required to meet the proposed new EPA Tier II and '2007-Rule' emission standards. The proposed filter concept is… more
Date: July 31, 2008
Creator: Rohrbach, Ron & Barron, Ann
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Novel Cleanup Agents Designed Exclusively for Oil Field Membrane Filtration Systems Low Cost Field Demonstrations of Cleanup Agents in Controlled Experimental Environments

Description: The goal of our project is to develop innovative processes and novel cleaning agents for water treatment facilities designed to remove fouling materials and restore micro-filter and reverse osmosis (RO) membrane performance. This project is part of Texas A&M University's comprehensive study of the treatment and reuse of oilfield brine for beneficial purposes. Before waste water can be used for any beneficial purpose, it must be processed to remove contaminants, including oily wastes such as… more
Date: August 31, 2007
Creator: Burnett, David & Vance, Harold
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DISSOLUTION OF NEPTUNIUM OXIDE RESIDUES

Description: This report describes the development of a dissolution flowsheet for neptunium (Np) oxide (NpO{sub 2}) residues (i.e., various NpO{sub 2} sources, HB-Line glovebox sweepings, and Savannah River National Laboratory (SRNL) thermogravimetric analysis samples). Samples of each type of materials proposed for processing were dissolved in a closed laboratory apparatus and the rate and total quantity of off-gas were measured. Samples of the off-gas were also analyzed. The quantity and type of solids re… more
Date: January 12, 2009
Creator: Kyser, E
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Simulation of Flow and Transport at the Micro (Pore) Scale

Description: An important problem in porous media involves the ability of micron and submicron-sized biological particles such as viruses or bacteria to move in groundwater systems through geologic media characterized by rock or mixed gravel, clay and sand materials. Current simulation capabilities require properly upscaled (continuum) models of colloidal filtration and adsorption to augment existing theories of fluid flow and chemical transport. Practical models typically address flow and transport behavio… more
Date: April 5, 2007
Creator: Trebotich, D & Miller, G H
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

An Innovative Method for Dynamic Characterization of Fan FilterUnit Operation.

Description: Fan filter units (FFU) are widely used to deliver re-circulated air while providing filtration control of particle concentration in controlled environments such as cleanrooms, minienvironments, and operating rooms in hospitals. The objective of this paper is to document an innovative method for characterizing operation and control of an individual fan filter unit within its operable conditions. Built upon the draft laboratory method previously published [1] , this paper presents an updated meth… more
Date: December 21, 2006
Creator: Xu, Tengfang
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Project W-551 Interim Pretreatment System Technology Selection Summary Decision Report and Recommendation

Description: This report provides the conclusions of the tank farm interim pretreatment technology decision process. It documents the methodology, data, and results of the selection of cross-flow filtration and ion exchange technologies for implementation in project W-551, Interim Pretreatment System. This selection resulted from the evaluation of specific scope criteria using quantitative and qualitative analyses, group workshops, and technical expert personnel.
Date: August 12, 2008
Creator: Conrad, E.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

On the transport of emulsions in porous media

Description: Emulsions appear in many subsurface applications includingbioremediation, surfactant-enhanced remediation, and enhancedoil-recovery. Modeling emulsion transport in porous media is particularlychallenging because the rheological and physical properties of emulsionsare different from averages of the components. Current modelingapproaches are based on filtration theories, which are not suited toadequately address the pore-scale permeability fluctuations and reductionof absolute permeability that a… more
Date: June 27, 2007
Creator: Cortis, Andrea & Ghezzehei, Teamrat A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Special filter samples of Hanford process effluent gases

Description: This document contains information on special filter samples of Hanford Process Effluent Gases. The filters are identified by code numbers only. Included in this paper are tables explaining the sample code numbers, sampling locations, and process conditions during sampling. Also included, is a copy of the monthly and quarterly average results for Regional Monitoring's routine stack program for the fourth quarter of 1956.
Date: January 22, 1957
Creator: Soldat, J.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Coal dissolution studies: particle size distribution in coal-derived liquids as a function of degree of coal conversion

Description: Exploratory studies were conducted to assess the effect of the degree of coal conversion (i.e., a decrease in the amount of pyridine insolubles) in reacted coal - athracene oil mixtures. Particle size distribution data on the reacted mixtures show that the percentage of particulates < 10 ..mu.. in diameter increases gradually with conversion up to a conversion of about 85%. At higher conversions, the percentage of particulates < 10 ..mu.. in diameter increases dramatically in a near-step, funct… more
Date: May 1, 1979
Creator: Gilliam, T. M.; Brand, J. I. & Rodgers, B. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy minimization of separation processes using conventional/membrane hybrid systems

Description: The purpose of this study was to identify the general principles governing the choice of hybrid separation systems over straight membrane or straight nonmembrane systems and to do so by examining practical applications (process design and economics). Our focus was to examine the energy consumption characteristics and overall cost factors of the membrane and nonmembrane technologies that cause hybrid systems to be preferred over nonhybrid systems. We evaluated four cases studies, chosen on the b… more
Date: September 28, 1990
Creator: Gottschlich, D.E. & Roberts, D.L. (SRI International, Menlo Park, CA (USA))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Coal liquefaction. Quarterly report, January--March 1978. [Brief summary of 15 pilot plant projects supported by US DOE]

Description: The advantage of coal liquefaction is that the entire range of liquid products, including heavy boiler fuel, distillate fuel oil, gasoline, jet fuel, and diesel oil, can be produced from coal by varying the type of process and operating conditions used in the process. Furthermore, coal-derived liquids have the potential for use as chemical feedstocks. To provide efficient and practical means of utilizing coal resources, DOE is sponsoring the development of several conversion processes currently… more
Date: September 1, 1978
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

324 and 325 Building Hot Cell Cleanout Program: Air lock cover block refurbishment

Description: The high-density concrete cover blocks shielding the pipe trench in the hot-cell air lock of the 324 Building Radiochemical Engineering Cells had accumulated fixed radioactivity ranging from 1100 to 22, 000 mrad/hr. A corresponding increase in the radiation exposure to personnel entering the air lock, together with ALARA concerns, led to the removal of the contaminated concrete surface with a hydraulic spaller and the emplacement of a stainless steel covering over a layer of grout. The resultan… more
Date: May 1, 1989
Creator: Katayama, Y.B.; Holton, L.K. Jr. & Gale, R.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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