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Meeting MS&T21: Materials Science & Technology
Symposium 2021 Undergraduate Student Poster Contest
Presentation Title Thermal Analysis of Sodalite-immobilized Iodine-129 Caustic Scrubber Slurry
Author(s) John M. Bussey, David Bollinger, Jessica Erickson, Natalie Smith-Gray, John S. McCloy
On-Site Speaker (Planned) John M. Bussey
Abstract Scope One modern challenge in nuclear fuel waste management is long-term disposal of Iodine-129 (<sup>129</sup>I). Issues include high groundwater mobility, long half-lives (15.7 million years), and incompatibility with typical vitrification technologies. Caustic scrubbers are planned to capture <sup>129</sup>I in an envisioned spent nuclear fuel reprocessing stream. One method utilizes incorporating <sup>129</sup>I in sodalite-type caged aluminosilicate minerals which can subsequently be Hot Isostatic Pressed (HIP) with binder glass for vitrified long-term storage. In characterizing mineralized caustic scrubber slurry, X-ray diffraction (XRD) is useful and somewhat limited. Promising supplemental methods include Differential Thermal Analysis (DTA) and Thermogravimetric Analysis (TGA) for measuring temperature-dependent heat and mass fluxes. Mixed-sodalites were hydrothermally synthesized and subsequently characterized with XRD, DTA, and TGA. DTA/TGA methods and corresponding analysis provided 1) phase identification complementing and verifying XRD results, 2) assignment and quantification of phase changes and volatilization events, and 3) essential insights for selecting HIP and glass binder parameters.


Composition and Physicochemical Properties of Typical Waste Cooking Oil
Effect of Carbon Stoichiometry on the Heat of Formation of Hafnium Carbides
Effect of Modifier Cation Size on the Bulk Structure and Nickel Speciation in Alkali Borosilicate Glasses
Electron Cloud Migration Effect-induced Lithiophobicity/Lithiophilicity Transformation for Dendrite-free Lithium Metal Anodes
Enhanced Mechanical Properties in a 4140 Steel by "In-House" Intensive Quench
Experiential Study on Critical Stress Intensity Factor of Carbon Nanotube Filled Epoxy
Exploring the Liquid Phase Exfoliation of Two-Dimensional Bilayered Vanadium Oxide in Aqueous Media for Li ion Batteries
High Temperature Mechanical Properties of TiB2-WC-SiC Materials
Highly Crystallized Prussian Blue with Enhanced Kinetics for Highly Efficient Sodium Storage
Investigation of Embedded Metallic Components on 3D Printed Ceramic Structures
Machine Learning Approaches to Predict Properties from Microstructure Images in Ceramic-Metal Composites
Mechanical Behavior of Automotive Structural Steels in the Vicinity of the Ductile-brittle Transition
Mechanical Property Assessment of Silicon Carbide Fiber-reinforced Epoxy-matrix Composites
Optimal Integration of TiO2-Coated Gold Nanostars for Enhancement of Photocatalytic Water Reduction
Perovskite Film Formation for Solar Cell Absorbers: Effects of Substrate Modification
Pressure Optimization of Fast-Moving Silicon MEMS Micromirrors
Processing and Properties of (Ta, Nb, Hf, Ti)C
Rheological Characterization of Highly Loaded Alumina-Polymer Suspension for Thermal Paste 3D Printing
The Dynamic Performance of Wearable Sensors with Flexible Silver Ink
The Mechanisms of Micro-fine Titanaugite Enter to Ilmenite in the Flotation and Depression Behavior of Sodium Silicate
Thermal Analysis of Sodalite-immobilized Iodine-129 Caustic Scrubber Slurry
ZrB2 Aqueous Slurry Development for DIW Additive Manufacturing

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