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NETL / METALLIC
The National Energy Technology Laboratory runs METALLIC and DOE's unconventional-feedstock rare earth programs — coal byproducts, acid mine drainage, and produced waters. 238 documents are listed below with links to their official OSTI records.
Rare-earth research and technology (238 documents)
Jump to: Conference papers (131) · Journal articles (47) · Technical reports (35) · Patents (10) · Datasets (8) · Licensable technologies (4) · Books (1) · Multimedia (1) · Program document (1)
Conference papers (131)
- Scalable Fabrication of a Fibrous Amine-functionalized Matrix (FAM) Sorbent for Critical Mineral Recovery
- MINLP for regularized symbolic regression with applications to data-driven modeling of critical minerals processes
- Extracting Critical Metals from Authentic Bauxite Residue
- Design and Optimization of Processing Pathways for Rare Earth Element Recovery from End-of-Life Products
- Geochemical Redox Fractionation of Rare Earth Elements in Acid Mine Drainage Treatment Solids: Implications for Recovery
- Detecting rare earth elements via optically detected magnetic resonance (ODMR) and spin-relaxometry using nitrogen vacancy centers in nanodiamonds
- Design and Performance Testing of Low-cost Multicomponent Rare Earth Disilicate Environmental Barrier Coatings
- Low-cost, portable optical sensors for critical mineral prospecting and process monitoring
- Microbial Biomining for the Release and Recovery of Rare Earth Elements in Abandoned Coal Mine Drainage
- Bacterial Biomining Rare Earth Elements in Abandoned Coal Mine Drainage: Solubilization and Sequestration
- Rapid Sensing to Facilitate Purification of Rare Earth Element-Containing Process Streams Produced Through Membrane-Assisted Solvent Extraction
- Ab Initio Design of High-Entropy Thermal/ Environmental Barrier Coatings
- From Quantum to Classical: Sensing Materials, Methods, and Platforms for Energy
- Computational Design of Cost-Effective High-Entropy Thermal/Environmental Barrier Coatings
- Electronics Free Laser Sensing Technology for Minerals and Technology Elements
- Materials and Platforms for the Optical Detection of Rare Earth Elements
- A National Critical Minerals and Materials Prospectus and Resource Assessment Methodology
- Informed Critical Mineral Recovery from Fossil Energy Waste Feedstocks
- Nitrogen Vacancy Center in Diamond for the Stress and Field Sensing Applications
- Luminescent Materials for the Detection of Economically Critical Metals in Harsh Environments
- Materials and Sensing Platforms for Luminescence-Based Sensing of Economically Critical Metals
- Quantum Sensing for Energy Applications
- Characterization Inform Sustainable Recovery of Critical Minerals from Fossil Energy Waste Feedstocks
- Portable fiber optic sensor for rare earth elements and other critical metals using photoluminescence methods
- Surrogate modeling of the leaching process in a rare earth elements recovery plant
- Rare Earth Elements (REEs) Measurement in Coal and Rock Mineral Matrices
- Microbial Reduction of Manganese Oxides From AMD Solids for the Biomining of Critical Minerals / Rare Earth Elements
- Targeted Rare Earth Element Extraction from Mine Drainage Treatment Solids Informed by Advanced Characterization
- Prospecting for Critical Minerals and Rare Earth Elements from Marcellus Shale in the Western Portion of the Appalachian Basin with Non-Destructive Core Characterization
- Characterization of Oil and Gas Drill Cuttings for Critical Mineral Recovery and Reuse Potential as Soil Supplements
- Targeted Biomining and Machine Learning Approaches in Critical Minerals Revealed by a Biogeochemical Survey of a Coal Mine Drainage Remediation System
- Multi-functional Sorbent Development for Separation of Critical Minerals and Pollutants
- Accelerated Design of Cost-Effective Thermal/Environmental Barrier Coatings based on High-Entropy Rare Earth Disilicates: A First-Principles Study
- Design and Optimization of Processes for Recovering Rare Earth Elements from End-of-Life Hard Disk Drives
- Optimal Membrane Cascade Design for Critical Mineral Recovery Through Logic-based Superstructure Optimization
- Design and Optimization of Processes for Recovering Rare Earth Elements from End-of-Life Hard Disk Drives
- Recycling Rare Earth Elements From End-of-Life Electric and Hybrid Electric Vehicle Motors
- Recycling Rare Earth Elements from End-of-Life Electric and Hybrid Electric Vehicle Motors
- Portable Luminescent Sensor Technologies for Economically Critical Metals
- Synthesizing Lithium Sorbents Using Acid Mine Drainage Solids
- Advanced Characterization to Inform Sustainable Recovery of Critical Minerals from Fossil Energy Waste Feedstocks
- Materials for the Photoluminescence-Based Detection of Economically Critical Metals
- Effect of Minor Ce Additions on Corrosion Behavior of Experimental Pipeline Steel
- Materials for the Photoluminescence-Based Detection of Economically Critical Metals
- Ce(III) and Ce(IV) Distribution in Acid Mine Drainage Solids: Implications for Rare Earth Element Recovery
- A Multi-scale, Geo-data Science Method for Assessing Unconventional Critical Mineral Resources
- Characterization of Rare Earth Elements in West Virginia GOB Piles
- Computational Design of High-Entropy Rare Earth Disilicates as Next-Generation Thermal/Environmental Barrier Coatings
- Toward a Sustainable LCA Framework for Rare Earth and Critical Mineral Production
- Process-based cost estimation framework for assessing economic viability of environmentally and socially sustainable rare earth element feedstocks
- Study of Different Formulations for the Multiperiod Blending Problem Applied to Lithium Recovery from Produced Water
- Electronic and Optical Properties of NV Center in Diamonds for Sensing Applications: Experimental and First Principles Density Functional Theory Approach
- Decision-Making Framework to Evaluate Opportunities for Recovery of Rare Earth Elements and Critical Minerals in Produced Water Networks
- Rare Earth Element/Critical Mineral (REE/CM) Recovery from Coal Byproducts and Acid Mine Drainage
- Development of a Portable Fiber Optic Luminescence Sensor for Rare Earth Elements
- Utilizing Coal as a Source for REE/CMs
- Extraction kinetics of rare earth minerals from ion-adsorbed underclays
- The Extraction of Easily Accessible Rare Earth Elements Using Citric Acid and Variable pH
- Sequential Extraction of Coal Related Feedstocks: Rare Earth Element Targetable Fractions and Extractability
- Luminescence-Based Sensing of Rare Earth Elements Using Zinc Adeninate Metal-Organic Frameworks
- Evaluating the effects of a low-carbon energy transition on existing U.S. fossil energy communities
- Advanced Characterization and Eco Friendly Recovery of Rare Earth Element from Coal Waste By Products
- Environmentally Responsible and Efficient Extraction of Rare Earth Elements from Powder River Basin Fly Ash
- Environmentally Responsible and Efficient Extraction of Rare Earth Elements from Powder River Basin Fly Ash
- Datamining Analysis of Rare Earth Element Recovery Research Trends - A Path Forward with Functionalized Silica Sorbents
- Reactive Grinding of Coal Ash For Enhanced Rare Earth Extraction
- Metal-Organic Framework-based Luminescent Sensors for Rare Earth Elements
- Metal-Organic Framework-based Luminescent Sensors for Rare Earth Elements
- Controlled evolution of rare earth phosphate in coal ash slag
- Controlled evolution of rare earth phosphate in coal ash slag
- Luminescent Metal-organic Framework-Based Sensors of Rare Earth Elements in Aqueous Streams
- Rare Earth Elements from Coal and By-Products: Separation Technologies
- Recovery of Rare Earth Elements from Industrial Waste: Coal By-products
- Synchrotron uXRF and uXANES Analysis on Rare Earth Speciation and Distribution in Select Appalachian Basin Underclays
- Controlled evolution of rare earth phosphate in coal ash slag
- Zinc-Adeninate Metal-Organic Framework—A Versatile Photoluminescent Sensor for Rare Earth Elements in Aqueous Systems
- Metal-Organic Framework - Based Luminescent Detection of Rare Earth Elements
- Microanalytical Characterization of Rare Earth Elements in Coal-associated Clays
- Microanalytical characterization of rare earth element in coal-associated clays
- Characterization and recovery of rare earth elements from Powder River Basin coal ash
- Characterization and extraction of rare earth elements in acid mine drainage treatment solids
- Characterization and recovery of rare earth elements from Powder River Basin coal ash
- Microanalytical Characterization of Rare Earth Elements in Coal-associated Clays
- Effect of Extractive Agent and Ca Content on Extractability of Rare Earth Minerals from Ca-Rich Coal Ash
- Recovery of Rare Earth Elements from Coal Seam Underclay
- Characterization and Recovery of Rare Earth elements from Powder River Basin Coal Ash
- Characterization of Rare Earth Elements in Appalachian Coal Fly Ash by Cathodoluminescence (CL) Spectroscopy
- Microanalysis of Rare Earth Elements in Coal Prep Fines
- Growth of Rare-Earth Doped Yttrium Aluminum Garnet Single Crystal Fibers
- Laser Induced Breakdown Spectroscopy (LIBS): A Potential Technology for Online Process Monitoring of Rare Earth Elements (REE) Recovery
- Effect of Ca on Extractability of Rare Earth Minerals from Fly Ash
- Detection of Rare Earth Elements Enhanced by Bio-Metal-Organic Frameworks (MOFs) Using UV LED
- Materials for Rare Earth Sensitization and Photoluminescence-Based Detection
- Effect of Cyclic Operation on HRSG and Coal-fired Boiler Tubes
- Recovery of the rare earth elements (REE) from coal fly ash via the combination of the physical separation and chemical extraction methods
- Dynamic Modeling of Steam-based Power Plants
- Leaching of Rare Earth Elements and Yttrium from a Central Appalachian Coal and the Ashes Obtained at 550-950°C
- Distribution and Speciation of Rare Earth Elements in Clay Deposits via Synchrotron µXRF and µXANES
- Mineralogical Analysis and Recovery of Rare Earth Elements from U.S. Domestic Coal Resources
- LIBS Sensor for a Rapid Source Characterization of Rare Earth Elements
- Rare Earth Elements in Coal and Coal Combustion Products
- A Study of Eu and Yb in aqueous solution by underwater laser-induced breakdown spectroscope
- Extraction of Rare Earth Elements from Fly Ash Using NaOH Hydrothermal and Ultrasound Pretreatment
- Physical Separations of Rare Earth Elements from Coal and Coal By-Products
- Elucidating Distribution and Speciation of Rare Earth Elements in Coal Utilization By-Products Utilizing Synchrotron Microscopy and Spectroscopy
- Organic and Inorganic Association of Rare Earth Elements in Coal
- Recovery of Rare Earth Elements from Coal and Coal By-products
- Evidence of REE Mobility and Fossil Ion Adsorbed REE Deposits in Pennsylvania
- Rare Earth Element Distributions and Extraction from Coal Ash
- Distributions and Extraction of Rare Earth Elements from Coal and Coal By-Products
- R&IC Rare Earth Overview: Sampling, Characterization, & Recovery of Rare Earths from Coal By-Products
- Evidence of Mobilization of REE: Geological Aspects of REE Formation in the United States
- Advanced Characterization of Rare Earth Elements in Coal Utilization Byproducts
- Advanced Characterization of Rare Earth Elements in Coal Utilization Byproducts
- Distribution Speciation of Rare Earth Elements in Coal Combustion By-Products
- Grain Scale Distribution of Rare Earth Elements in Coal Ash by SHRIMP-RG Ion Microprobe
- Grain Scale Distribution of Rare Earth Elements in Coal Ash by SHRIMP-RG Ion Microprobe
- Distribution and Speciation of Rare Earth Elements in Coal Combustion Byproducts
- Microanalysis of Rare Earth Elements in Coal Utilization Byproducts
- Size, Density and Electromagnetic Separations of Coal Fly Ash for Rare Earth Element Enrichment
- Recovery of Rare Earth Elements from Coal and Coal Byproducts: What Have We Learned from the USGS CoalQual Database?
- Using Portable X-Ray Fluorescence to Detect Rare Earth Elements in Coal and Surrounding Rock
- Reactive Grinding of Coal Ash for Enhanced Rare Earth Extraction
- Studies on the use of alginate gel polymers as selective adsorbents of rare earth elements from aqueous solution
- Studies on the use of alginate gel polymers as selective adsorbents of rare earth elements from aqueous solutions
- The Search for Rare Earth Elements in an Eastern Shale
- Characterization of Rare Earth Elements in Canadian Oil Sand Process Streams
- Fate of Rare Earth Elements during Lab-Scale Combustion of Lignite Coal [Poster]
- Geochemical Characterization of Rare Earth Elements in Coal Combustion Byproducts Utilizing Synchrotron Technology
- Profiling Rare Earth Elements In Power River Basin Sub-Bituminous Coal Ash Using Laser-Induced Breakdown Spectroscopy (LIBS)
- The Performance of Ce Surface Treated Ferritic Stainless Steels for Solid Oxide Fuel Cell Interconnects
Journal articles (47)
- ErAl:Al2O3 for telecom-band photonics: Electronic structure and optical properties
- Design and optimization of processes for recovering rare earth elements from end‐of‐life permanent magnets
- Rare Earth Element Detection and Quantification in Coal and Rock Mineral Matrices
- An Optimization-Based Law of Mass Action Precipitation/Dissolution Model
- Insights into oxygen diffusion in rare earth disilicate environmental barrier coatings
- Surrogate modeling and optimization of the leaching process in a rare earth elements recovery plant
- Chemistry imaging and distribution analysis of rare earth elements in coal using LIBS and LA-ICP-MS instruments
- Advanced thermal/environmental barrier coatings of high-entropy rare earth disilicates tuned by strong anharmonicity of Eu2Si2O7
- Computational design of high-entropy rare earth aluminum garnets for advanced thermal and environmental barrier coatings
- Zinc adeninate metal–organic framework-coated optical fibers for enhanced luminescence-based detection of rare earth elements
- Influence of Rare Earth Ce Additions on Microstructure and Mechanical Properties of Experimental Pipeline Steels
- A Geo-Data Science Method for Assessing Unconventional Rare-Earth Element Resources in Sedimentary Systems
- Computational Design of High-Entropy Rare Earth Disilicates as Next-Generation Thermal/Environmental Barrier Coatings
- Development of a Low-Cost, Sensitivity-Optimized Fluorescence Sensor for Visible Spectrum Analysis
- Rare Earth Element (REE) and Critical Mineral Fractions of Central Appalachian Coal-Related Strata Determined by 7-Step Sequential Extraction
- On a Unified Core Characterization Methodology to Support the Systematic Assessment of Rare Earth Elements and Critical Minerals Bearing Unconventional Carbon Ores and Sedimentary Strata
- Critical review of functionalized silica sorbent strategies for selective extraction of rare earth elements from acid mine drainage
- Technoeconomic Assessment of a Sequential Step-Leaching Process for Rare Earth Element Extraction from Acid Mine Drainage Precipitates
- Assessing the Extractability of Rare Earth Elements from Coal Preparation Fines Refuse Using an Organic Acid Lixiviant
- Influence of the Anionic Zinc-Adeninate Metal–Organic Framework Structure on the Luminescent Detection of Rare Earth Ions in Aqueous Streams
- Concentrating rare earth elements to phosphate in molten coal ash by a temperature gradient approach
- Dopant segregation in YAG single crystal fibers grown by the laser heated pedestal growth technique
- Leaching of Rare Earth Elements from Central Appalachian Coal Seam Underclays
- Microanalytical Approaches to Characterizing REE in Appalachian Basin Underclays
- Stable immobilized amine sorbents for heavy metal and REE removal from industrial wastewaters
- Evaluation of analytical performance of double pulse laser-induced breakdown spectroscopy for the detection of rare earth elements
- Adsorption kinetics, thermodynamics, and isotherm studies for functionalized lanthanide-chelating resins
- Zinc-Adeninate Metal–Organic Framework: A Versatile Photoluminescent Sensor for Rare Earth Elements in Aqueous Systems
- The evaluation of critical rare earth element (REE) enriched treatment solids from coal mine drainage passive treatment systems
- Evaluating Laser-Induced Breakdown Spectroscopy Sensor Technology for Rapid Source Characterization of Rare Earth Elements
- Rare earth elements and radiogenic strontium isotopes in carbonate minerals reveal diagenetic influence in shales and limestones in the Appalachian Basin
- Rare-earth high entropy alloys with hexagonal close-packed structure
- Investigating the CO 2 pressure effect on underwater laser-induced plasma emission of Eu and Yb
- Investigating the CO2 pressure effect on underwater laser-induced plasma emission of Eu and Yb
- Analysis of rare earth elements in coal fly ash using laser ablation inductively coupled plasma mass spectrometry and scanning electron microscopy
- Investigation of Thulium and Other Rare Earth Element Mass Fractions in NIST SRM 1632a Bituminous Coal Reference Material by Quadrupole ICP-MS
- Enrichment of rare earth elements from coal and coal by-products by physical separations
- Organic and inorganic associations of rare earth elements in central Appalachian coal
- Notes on Contributions to the Science of Rare Earth Element Enrichment in Coal and Coal Combustion Byproducts
- Discovering the feasibility of using the radiation forces for recovering rare earth elements from coal power plant by-products
- Rare Earth Element Distributions and Trends in Natural Waters with a Focus on Groundwater
- Rare Earth Element Distributions and Trends in Natural Waters with a Focus on Groundwater
- An Electron Microscopy Investigation of the Transient Stage Oxidation Products in an Fe-22Cr Alloy with Ce and La Additions Exposed to Dry Air at 1073 K (800 °C)
- An Electron Microscopy Investigation of the Transient Stage Oxidation Products in an Fe-22Cr Alloy with Ce and La Additions Exposed to Dry Air at 1073 K (800 °C)
- Thermodynamic Assessment of V-Rare Earth Systems
- Thermodynamic Assessment of Cr-Rare Earth Systems
- Thermal decomposition of the rare earth sulfates of cerium(III), cerium(IV), lanthanum(III) and samarium(III)
Technical reports (35)
- Abstract for CRADA between NETL and GlycoSurf, Inc.
- Computed Tomography Scanning and Petrophysical Measurements of Eastern Williston Basin Twin Buttes and Hagel Formations
- Computed Tomography Scanning and Geophysical Measurements of UW Enterprises LP 1-250512-129 Well in Southwestern Indiana
- Abstract for CRADA between NETL and Rivalia Chemical Co
- Optimization of Conditions for Photoluminescence-Based Sensing of Critical Minerals: Strategies and Outlook
- Computed Tomography Scanning and Petrophysical Measurements of Illinois Basin Coal Wells
- Evaluating a Semi-Quantitative, Spectrophotometric Method for the Rapid Determination of Total Rare Earth Element Concentrations in Citrate Leaching Solutions
- In-situ optical monitoring of gas turbine blade coatings under operational extreme environments
- Strategies to Recover Easily-Extractable Rare Earth Elements and Other Critical Metals from Coal Waste Streams and Adjacent Rock Strata Using Citric Acid
- Middle Kittanning Coal Waste and Underclay as an Alternative Rare Earth Elements Feedstock
- Geology of Rare Earth Deposits [Slides]
- Towards A Geo-Data Science Method for Assessing Rare Earth Element and Critical Mineral Occurrences in Coal and Other Sedimentary Systems
- Resources from the Ashes: Rare Earth Elements in Coal Waste Byproducts [Slides]
- Cooperative Research and Development Agreement among National Energy Technology Laboratory, University of Wyoming, and Energy Capital Economic Development [Abstract]
- Project Task Statement 2 to Umbrella Cooperative Research and Development Agreement between National Energy Technology Laboratory and Ramaco Carbon [Abstract]
- Recovery of High Purity Rare Earth Elements (REE) from Coal Ash via a Novel Electrowinning Process (Final Report)
- The Application of Current Mineral Processing and Extractive Metallurgy Technologies to Potential Rare Earth Ores in the U.S. Coal Measures: Near-Term Opportunities to Fill Out the U.S. Value Chain
- Abstract - Cooperative Research and Development Agreement between Ramaco Carbon and National Energy Technology Laboratory
- Characterization of Rare Earth Element Minerals in Coal Utilization Byproducts
- Characterization and Recovery of Rare Earths from Coal and By-Products [Poster]
- Characterization and Recovery of Rare Earths from Coal and By-Products
- Brine Chlor-alkali Processing
- Tribolectrostatic separation of minerals
- Separation of rare earth elements using ion exchange
- Rare earth oxide formation
- Metallothermic Reduction of Rare Earth Oxides
- Rare Earth Oxide Electrolysis
- Rare earths solvent extraction
- Rare earth leaching
- Mountain Pass Ore Extraction
- Magnetic Separation
- Froth Flotation
- Gravity Separation
- IMPROVED CORROSION RESISTANCE FOR ALUMINA REFRACTORY
- IMPROVED CORROSION RESISTANCE OF ALUMINA REFRACTORIES
Patents (10)
- Organic acid solution having at least one ionic salt and at least one organic acid which is used for rare earth extraction
- Production of graphene-structured products from coal using thermal molten salt process
- System and method for concentrating rare earth elements from coal byproducts/slag
- Oxycarbonitride phosphors and light emitting devices using the same
- Methods for preparation of nanocrystalline rare earth phosphates for lighting applications
- Alkaline and alkaline earth metal phosphate halides and phosphors
- Oxyhydrochlorination catalyst
- Catalysts and method
- Process for converting light alkanes to higher hydrocarbons
- Process for converting light alkanes to higher hydrocarbons
Datasets (8)
- Critical Minerals and Materials Matchmaker-CM3
- URC Assessment Method
- Quillinan, et al 2018 DOE Geothermal Technology Office REE Report for NEWTS Database and Case Studies
- URC assessment method publication - Supplementary files
- Supplementary data for Technical Report: Towards A Geo-Data Science Method for Assessing Rare-Earth Element Occurrences in Coal and Other Sedimentary Systems
- Analyzing Solutions High in Total Dissolved Solids for Rare Earth Elements (REEs) Using Cation Exchange and Online Pre-Concentration with the seaFAST2 Unit
- Characterization of Rare Earth Element Minerals in Coal Utilization Byproducts
- Rare earth elements in apatite from the Strong Creek deposit, Laramie Anorthosite Complex, Wyoming USA
Licensable technologies (4)
- Improved Rare Earth Element Extraction Method from Coal Ash
- Novel Method Concentrates Rare Earth Elements Within Coal Byproducts to Facilitate Extraction
- Polymeric Sorbent for Use In CO2 Capture and Separation
- Portable Luminescence-based Sensor for Rare Earth Element Detection
Books (1)
Multimedia (1)
Program document (1)
Sources
- National Energy Technology Laboratory · published Aug 11, 2026 · retrieved Aug 11, 2026 · archive