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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Advances in Powder and Ceramic Materials Science
Presentation Title K-22: Bioinspired Ceramic Monoliths from Freeze-Casting for Filtration Applications
Author(s) Sean Garner, Zhixiong Jack Li , Doheon Lee, Dimitri D Deheyn, Joanna M McKittrick
On-Site Speaker (Planned) Sean Garner
Abstract Scope The silica cell walls of diatom contain hierarchical porosity and are widely available in its fossilized form, diatomite. This research utilizes this cost-effective source of porous silica in a unidirectional freezing process (i.e. freeze-casting), which produces membranes with unidirectional lamellar walls (~10 µm spacing) that allow for efficient mass transport of fluids. Control over the monolith was explored by varying the ratio of diatomite and a flux material, sodium carbonate, and the solids ratio in the slurry before casting. Properties are measured using scanning electron microscopy, mercury porosimetry, and mechanical testing. The membranes (3.4 mm in thickness) undergo dead-end filtration of methylene blue dye and monodisperse latex beads to quantify the filtration performance through chemical adsorption and depth filtration mechanisms, respectively. These ceramic membranes are cost-effective and highly customizable for various filters, catalyst supports, and tissue engineering scaffolds. This work is supported by UC San Diego’s Chancellor’s Interdisciplinary Collaboratories grant.
Proceedings Inclusion? Planned:

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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Development of Shape-Controlled Oxide Nanopowders as Support Materials in Emission Control Catalysts
Effect of B4C Addition on (Hf,Zr)B2 Based Ultra High Temperature Ceramics
Evaluation of a Three-chamber Algae-cathode Microbial Fuel Cell for Bioelectrochemical Recovery of Energy and Lead Metal
High-temperature Microwave Dielectric Properties of Boron Nitride Polycrystalline Ceramics without additives
High Densification Rates (10-3 s-1) in Nanocrystalline Oxides by CAPAD Processing: Effects of Water Absorption and Grain Size
ICME-Based Design of Cermet Tool Material for Friction Stir Welding (FSW) of High-strength Materials
Investigating Solid Solutions of Tungsten in Molybdenum Aluminium Boride MAB Phase Ceramics, for Use in Extreme Environments
K-22: Bioinspired Ceramic Monoliths from Freeze-Casting for Filtration Applications
K-23: Evaluation of the Incorporation of Marble and Granite Residue in Coating Mortars
K-24: Influence of Construction and Demolition Waste Incorporation in Concrete
K-26: Microstructure Characterization of Annealed Polycrystalline YIG Samples Prepared from the Sol-gel Method Using 2d EBSD
K-27: Polymer Fibers from Waste Tires and Sugar Cane Molasses for Soil Improving
K-28: Preparation of Lithium and Terbium Doped Yttrium Borate
K-30: Preparation of YBO3:Ce3+ Film via Impregnation-lifting Method and Its Photoluminescence Property
K-31: Process Optimization of Foaming Ceramics Made from Blast Furnace Slag and Fly Ash
K-32: Synthesis of Silicate Zinc Bioceramic via Mechanochemical Technique
K-33: The Hardystonite/PA66 Composite for Using as the Intervertebral Fusion Cage
Microstructural Characteristics and Effective Applications of Andalusite-Mullite Phase Transformation
Microstructure-processing Relationships in Rare Earth Doped Alumina Ceramics for Lighting/laser Applications
Microwave Absorption Properties of Polymer-derived SiCN(Fe)/Si3N4 Ceramics
Preparation of Rare Earth Stabilized Nanocrystalline Zirconia with Tunable Optical/mechanical Properties
Pressure-less Processing of Ceramics with Deliberate Elongated Grain Orientation and Size
Role of Anisometric Particles in Microstructure Evolution, Structural Stability and Compressive Mechanical Properties in Ice-templated Ceramics with Directional Porosity
Structural and Dielectric Properties of InCr1−xTixO3+x/\2 (x = 2/6, 2/7, and 2/8)
Structure, Chemistry, Optical and Dielectric Properties of a New Pyrophosphate: LiGaP2O7
Toughening Mechanism of ZTA-TiC-Fe Ceramic Materials Produced by High Gravity Combustion Synthesis

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