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Friday, April 17, 2020 | History

2 edition of encapsulation of nuclear waste in a magnesium aluminosilicate glass-ceramic found in the catalog.

encapsulation of nuclear waste in a magnesium aluminosilicate glass-ceramic

Kathryn Michelle Luk

encapsulation of nuclear waste in a magnesium aluminosilicate glass-ceramic

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Published by typescript in [s.l.] .
Written in English


Edition Notes

Thesis (Ph.D.) - University of Warwick, 1999.

StatementKathryn Michelle Luk.
The Physical Object
Paginationix, 229p.
Number of Pages229
ID Numbers
Open LibraryOL19460956M

Magnesium Aluminum Silicate manufacturers, service companies and distributors are listed in this trusted and comprehensive vertical portal. The comprehensive directory provides access to full contact and ability information for sourcing professionals, engineers and researchers wishing to get information on Magnesium Aluminum Silicate. For glass and glass-ceramic waste forms, the added glass-forming system is generally alkali-alkaline earth-aluminoborosilicate (i.e., Na-Ca-Al-B-Si oxide). In a US-UK collaborative project, summarized here, we investigated the glass structure and crystallization dependence on compositional changes in simulated nuclear waste glasses and glass.


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encapsulation of nuclear waste in a magnesium aluminosilicate glass-ceramic by Kathryn Michelle Luk Download PDF EPUB FB2

The encapsulation of nuclear waste in a magnesium aluminosilicate glass-ceramic. Author: Luk, Kathryn Michelle. ISNI: Awarding Body: University of Warwick Current Institution: University of Warwick Date of Award: Availability of Full Text.

Scientific Basis for Nuclear Waste Management Volume 1 Proceedings of the Symposium on “Science Underlying Radioactive Waste Management,” Materials Research Society Annual Meeting, Boston, Massachusetts, November 28–December 1, Editors: McCarthy, Gregory J. (Ed.) Free Preview.

Spent fuel--a metal-clad, UO2 ceramic-- is designed without consideration of its waste form properties; but in High-level nuclear waste immobilization with ceramics order to avoid reprocessing, spent fuel has become an important, potential waste by: The dismantling of UNGG nuclear reactor generates a large volume of fuel decanning.

These materials are based on Mg-Zr alloy. The dismantling strategy could be to encapsulate these wastes into an ordinary Portland cement (OPC) or geopolymer (aluminosilicate material) in a form suitable for storage.

Studies have been performed on Mg or Mg-Al alloy in basic media but no data are available on Mg Cited by: 1. A glass‐ceramic waste form is being developed for immobilization of waste streams of alkali (A), alkaline‐earth (AE), rare earth (RE), and transition metals generated by transuranic extraction.

Magnesium phosphate cement as a potential alternative for encapsulation of nuclear wastes containing aluminium. waste encapsulation, a higher M/P ratio m ay not be. massive pollution of the environment. Nuclear waste is a useless by-product resulting from the utilization of nuclear energy in both power generation and other applications such as in medicine, industry, agriculture, and research.

Safe and effective management of nuclear waste is crucial to ensure the sustainable utilization of nuclear energy. Nuclear energy has been widely used as a clean and efficient energy resource. Despite the considerable economic and social benefits of nuclear energy, the problem concerning the large amount of nuclear waste to be disposed of requires global attention [1,2,3].A total oftons of radioactive nuclear waste are accumulated by nuclear reactors, with an annual growth rate of 12, : Tingting Zhang, Tong Li, Jing Zou, Yimiao Li, Shiwei Zhi, Yuan Jia, Christopher R.

Cheeseman. The cement is the natural equivalent of magnesium silicate hydrate cement (M-S-H), which is currently of interest for nuclear waste encapsulation or for environmentally friendly building cement.

Forsterite Ceramics have relatively high thermal expansion allowing them to seal to certain glasses and metals. Forsterite has excellent electrical insulating properties, good mechanical strength and can function at safe operating temperatures up to C. Typical applications include but not limited to, radiation detection devices and other vacuum and hermetic seal type applications.

Calcium-Magnesium-Aluminosilicate (CMAS) Reactions and Degradation Mechanisms of Advanced Environmental Barrier Coatings Nadia L. Ahlborg* and Dongming Zhu National Aeronautics and Space Administration Glenn Research Center Cleveland, Ohio Abstract The thermochemical reactions between calcium-magnesium-aluminosilicate- (CMAS-) based road.

Crystallization of Titanosilicate Glasses for Nuclear Waste Immobilization Article in Journal of the American Ceramic Society 72(4) - March with 7 Reads How we measure 'reads'. The high-temperature ( °C) interactions of two promising dense, polycrystalline EBC ceramics, YAlO 3 (YAP) and γ-Y 2 Si 2 O 7, with a calcia-magnesia-aluminosilicate (CMAS) glass have been explored as part of a model e the fact that the optical basicities of both the EBC ceramics and the CMAS are similar, they both react with the by: K.

Garrett - "The encapsulationof nuclear waste in a magnesium aluminosilicate glass-ceramic" () J. Bent - "An experimental study of some silicate based glasses" () A. Sears - "The characterisation of stannosilicate glasses" (). Glass matrix composites intended for the immobilisation of plutonium bearing nuclear legacy waste have been manufactured.

Two different matrices, a soda borosilicate glass and a lead silicate glass, are proposed for encapsulating lanthanum and gadolinium zirconates having pyrochlore crystalline by: Legacy radioactive wastes arising from reprocessing of nuclear fuels in the UK are classified as intermediate level waste (ILW), which contain things such as aluminium and magnesium.

Abstract. The dismantling of UNGG nuclear reactor generates a large volume of fuel decanning. These materials are based on Mg-Zr alloy. The dismantling strategy could be to encapsulate these wastes into an ordinary Portland cement (OPC) or geopolymer (aluminosilicate material) in a Cited by: 1.

The practical use of the cement takes advantage of rapid rate and magnitude of strength development.Although these cements are mostly claimed to be dimensionally stable, a recently published review suggested that further investigation in this area might be necessary. Apart from repair of civil engineering structures the cement has been used for encapsulation of nuclear waste.

Crystallization Kinetics of Calcium-Magnesium Aluminosilicate (CMAS) Glass Valerie L. Wiesner and Narottam P. Bansal National Aeronautics and Space Administration Glenn Research Center Cleveland, Ohio Abstract The crystallization kinetics of a calcium-magnesium aluminosilicate (CMAS) glass with composition.

Approximately 25% of all known minerals are silicates. Because silicates have such unique properties, they can be used in many different industrial applications. We offer several varieties of Magnesium Aluminum Silicate Ceramics, including Steatite, White Steatite, Low Loss Steatite, and : () The interactions of two potential topcoat materials for environmental barrier coatings, Yb_2SiO_5 and Yb_2Si_2O_7, with calcium-magnesium-aluminosilicate (CMAS) engine deposits were studied.

X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and electron diffraction were used to investigate the phase transformation associated with the exposure of Yb_2SiO_5 Cited by: USA1 US14/, USA USA1 US A1 US A1 US A1 US A US A US A US A1 US A1 US A1 Authority US United States Prior art keywords layer glass containment containment layer radioactive waste Prior art date Legal status Author: Edward Murphy.

Introduction. We recently reported the first comprehensive investigation of magnesium potassium phosphate cements (MKPCs), blended with 50 wt% fly ash (FA) and ground granulated blast furnace slag (GBFS) for the potential encapsulation of radioactive a combination of compressive strength, X-ray diffraction (XRD), scanning electron microscopy (SEM) and nuclear magnetic Cited by: 8.

Q switching of a diode-pumped Nd3+:KGd(WO4)2 laser at μm by use of cobalt-doped magnesium- and zinc-aluminosilicate glass ceramics as saturable absorbers is demonstrated.

Q-switching efficiency up to 40% has been obtained. Ground-state absorption cross sections for Co2+ ions at the wavelengths of and μm are estimated to be (–) × cm2. Crystalline ceramics are intensively investigated as effective materials in various nuclear energy applications, such as inert matrix and accident tolerant fuels and nuclear waste immobilization.

This paper presents an analysis of the current status of work in this field of material sciences. We have considered inorganic materials characterized by different structures, including simple oxides Cited by: 2. The versatility of the glass-ceramic production process ismanifested by the many wastes that have been used as raw materials for glass-ceramics, whichinclude coal fly ash [], mud from zinc hydrometallurgy [], slag from steel production[13, ], ash and slag from waste incinerators [], red mud from alumina production[58], waste.

The crystallization behavior and transparent property of MgO-Al2O3-SiO2 (MAS) glasses with TiO2 and TiO2+ZrO2 as nucleating agents were discussed by differential thermal analysis, X-ray diffraction, field emission-environment scanning electron microscope, energy dispersive spectrum and UV-VIS-NIR scanning spectrophotometer.

It was found that the glass crystallized at °C with ZrO2 Cited by: @article{osti_, title = {Design documentation: Krypton encapsulation preconceptual design}, author = {Knecht, D A}, abstractNote = {US EPA regulations limit the release of Krypton to the environment from commercial facilities after January 1, In order to comply with these regulations, Krypton, which would be released during reprocessing of commercial nuclear fuel, must be.

aluminosilicic acid magnesium salt: aluminum magnesium silicate: aluminum magnesium silicon oxide: magnesium aluminosilicate: magnesium aluminum silicate NF type 1A ( - CPS) magnesium aluminum silicate NF type 1B ( - CPS) magnesium aluminum silicate NF type 1C ( - CPS) magnesium aluminum silicate NF type 2A ( - CPS).

Sintered glass-ceramics with gehlenite and anorthite as main crystalline phases have been prepared with glass powder made from a waste water flocculate.

In this work, different binders, including diluted water glass, polyvinyl alcohol (PVA) solution and kaolin were added to form green bodies for making sintered glasses ceramics.

Magnesium Silicate Hydrex® products are a class of synthetic magnesium-aluminum silicates which are suitable for both acid and alkaline paper making.

Hydrex synthetic magnesium silicate has a medium particle size, high brightness and high oil absorption characteristics. Available. The traditional silicate ceramic materials from CeramTec: Early developments in the field of technical ceramics began with the use of these oxide ceramics for electrical insulation.

Silicate ceramics are manufactured from natural raw materials for the most part. Acid demand— After determining the Loss on drying, weigh a quantity of Magnesium Aluminum Silicate equivalent to g, and disperse in mL of water with the aid of a suitable blender fitted with a 1-liter a stopwatch, designate zero time.

With constant mixing, add mL portions of N hydrochloric acid at 5, 65,, and Aluminosilicate glasses containing rare-earth and rare-earth analogue cations such as Y3+ and La3+ are interesting for a variety of technological applications, as well as for elucidating general principles of glass formation and structure.

We present high-resolution 17O and 27Al NMR data on a series of lanthanum and yttrium aluminosilicates, which show the significant increase in Cited by: THE ROLE OF SECONDARY ALUMINOSILICATE MINERALS IN TECHNETIUM IMMOBILIZATION IN RADIOACTIVE WASTE Abstract by Johnbull Otah Dickson, Ph.D.

Washington State University August Chair: James Harsh Corroding waste tanks at select U.S. Department of Energy’s nuclear waste. Preliminary Corrosion Test of a Glass-Ceramic Candidate for a Nuclear Waste Canister.- Thermal, Geochemical and Radiation Interactions Near the Repository.- Application of Physical Chemistry of Fluids in Rock Salt at Elevated Temperature and Pressure to Repositories for Radioactive Waste Production of geopolymer cement requires an aluminosilicate precursor material such as metakaolin or fly ash, a user-friendly alkaline reagent (for example, sodium or potassium soluble silicates with a molar ratio MR SiO 2:M 2 O ≥M being Na or K) and water (See the definition for "user-friendly" reagent below).

Room temperature hardening is more readily achieved with the addition of a. Immobilization of Radioactive Materials as a Glass-Ceramic Wasteform Barium Aluminosilicate Glass-Ceramics Barium Titanium Silicate Glass-Ceramics Calcium Magnesium Silicate Glass-Ceramics Calcium Titanium Silicate Glass-Ceramics Basaltic Glass-Ceramics Zirconolite Based Glass-Ceramics 4 Waste Processing and Waste Form Production.

The focus of this chapter is on the fourth charge of the statement of task for this study (see Box in Chapter 2), which calls for the identification and description of “potential modifications of waste form production methods that may lead to more efficient 1 production of waste forms to meet their performance requirements.”.

Books. Corkhill C & Hyatt N Nuclear Waste Publishing. Journal articles. Dube CL, Stennett MC, Ananthanarayanan A, David C, Shah JG & Hyatt NC () Radiation stability study on cerium loaded iron phosphate glasses by ion irradiation method.

Journal of Radioanalytical and Nuclear Chemistry, (3), ; Barlow ST, Bailey DJ, Fisher AJ, Stennett MC, Gausse C, Ding H. He proposed the use of magnesium phosphate cement as a potential alternative for the encapsulation of nuclear waste containing aluminium, as it is rapid setting, has high short and long term strengths, a lower permeability and a greater resistance to sulphate attack.

Zeolites are hydrated aluminosilicate minerals made from interlinked tetrahedra of alumina (AlO 4) and silica (SiO 4). In simpler words, they're solids with a relatively open, three-dimensional crystal structure built from the elements aluminum, oxygen, and silicon, with alkali or alkaline-Earth metals (such as sodium, potassium, and magnesium.Glass is a non-crystalline, often transparent amorphous solid, that has widespread practical, technological, and decorative uses in, for example, window panes, tableware, optics, and most familiar, and historically the oldest, types of manufactured glass are "silicate glasses" based on the chemical compound silica (silicon dioxide, or quartz), the primary constituent of .