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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Advances in Environmental Technologies: Recycling and Sustainability Joint Session
Presentation Title Scoping the Potential of Coal Ash as a Source of Rare Earth Elements
Author(s) Gabrielle Gaustad, Vasken Xhaxhollari, Eric Williams, Saptarshi Das
On-Site Speaker (Planned) Gabrielle Gaustad
Abstract Scope It has been well known for decades that coal ash contains both hazardous and valuable metals. However, a majority of secondary uses for both fly and bottom ash, for example as cement and concrete additives, do not attempt to extract these materials. Current concerns about lack of diversity in supply of critical materials have spurred research into utilizing domestic sources, particularly from waste streams. This work combines material flow analysis and techno-economic modeling to explore the resource and economic potential for coal ash to become a valuable source of rare earth elements (REE). Results show that while REE concentrations in the ash are significantly lower than currently economically extractable ores in most mines, the magnitude of materials available could meet current REE demand even at fairly low extraction yield rates. A combination of higher REE commodity prices, improved yields, and scale-up factors would be required for economic profitability.
Proceedings Inclusion? Planned:


A Low Temperature Procedure for the Delamination of Brominated Epoxy Resin of Waste Printed Circuit Boards
Accelerating Life-cycle Management Protocols for New Generation Batteries
Addressing Criticality in Rare Earth Elements through Strategic Recycling
Characteristics of Municipal Solid Waste Incineration Bottom Ash with Particulate Matters PM2.5 ~PM10
D-4: Chronopotentiometry Applied to the Determination of Copper Transport Properties through a Cation-exchange Membrane
D-5: Effect of Flow Rate on Metals Adsorption of Synthetic Solution Using Chelating Resin Dowex XUS43605 in Column Experiments
D-6: Evaluation of the Silver Recovery from Solid Industrial Wastes in an Electrochemical Reactor
D-7: Preparation of Core-shell Fe3O4@SiO2 Nanoparticles from Iron Tailing via Chemical Co-precipitation Method
D-8: Recycling of Worn Lithium Ion Batteries through a Process of Co-grinding with PVC
D-9: Chemical Reduction of Fe(III) in Nickel Lateritic Wastewater to Recover Metals by Ion Exchange
Development of a Separation Process of NBR/ HNBR Rubber from Metal Substrate
Development of Open Source Software Tool for Life Cycle Assessment of Rare Earth Elements Production
Environmental Implications of Laser Metal Deposition: The Role of Feedstock Powder and Material Utilization Fraction
Fabrication of Aluminum Foam from Aluminum Scrap
Recovery of Aluminum from the Secondary Aluminum Production Dust
Recovery of Electrolytic Zinc from Aqueous Wastes: An Approach to the Industry of Hot Dip Galvanized
Recovery of Metals and Nonmetals from Waste Printed Circuit Boards (PCBs) by Physical Recycling Techniques
Scoping the Potential of Coal Ash as a Source of Rare Earth Elements
Understanding Scrap Recycling and the Potential of Hand-held Elemental Analyzers

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