DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Rare earth elements from waste

Journal Article · · Science Advances

Rare earth elements (REEs) are critical materials in electronics and clean technologies. With the diminishing of easily accessible minerals for mining, the REE recovery from waste is an alternative toward a circular economy. Present methods for REE recovery suffer from lengthy purifications, low extractability, and high wastewater streams. Here, we report an ultrafast electrothermal process (~3000°C, ~1 s) based on flash Joule heating (FJH) for activating wastes to improve REE extractability. FJH thermally degrades or reduces the hard-to-dissolve REE species to components with high thermodynamic solubility, leading to ~2× increase in leachability and high recovery yields using diluted acid (e.g., 0.1 M HCl). The activation strategy is feasible for various wastes including coal fly ash, bauxite residue, and electronic waste. The rapid FJH process is energy-efficient with a low electrical energy consumption of 600 kWh ton–1. The potential for this route to be rapidly scaled is outlined.

Research Organization:
Rice Univ., Houston, TX (United States)
Sponsoring Organization:
Air Force Office of Scientific Research; U.S. Army Corps of Engineers, ERDC; USDOE
Grant/Contract Number:
FE0031794
OSTI ID:
1882602
Journal Information:
Science Advances, Journal Name: Science Advances Journal Issue: 6 Vol. 8; ISSN 2375-2548
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English

References (63)

High‐Temperature Shock Enabled Nanomanufacturing for Energy‐Related Applications journal July 2020
Recovery of metals and other beneficial products from coal fly ash: a sustainable approach for fly ash management journal August 2016
Hydrometallurgical Recovery of Rare Earth Elements from Mine Tailings and WEEE journal May 2018
Recovery of lanthanides and yttrium from red mud by selective leaching journal January 1996
XPS core level and valence band spectra of LaH3 journal March 1982
Oxidation of lanthanum overlay ers on Cu(111) journal January 1995
Leaching of Rare Earth Elements: Review of Past and Present Technologies book January 2016
Critical evaluation of thermodynamic properties of rare earth sesquioxides (RE = La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Sc and Y) journal September 2017
Flash graphene from rubber waste journal June 2021
Diglycolamide-grafted Fe3O4/polydopamine nanomaterial as a novel magnetic adsorbent for preconcentration of rare earth elements in water samples prior to inductively coupled plasma optical emission spectrometry determination journal April 2019
Economics of rare earth elements in ceramic capacitors journal December 2012
The aqueous geochemistry of the rare earth elements. Part XIV. The solubility of rare earth element phosphates from 23 to 150 °C journal April 2005
Coal deposits as potential alternative sources for lanthanides and yttrium journal May 2012
Distribution of rare earth elements in coal combustion fly ash, determined by SHRIMP-RG ion microprobe journal November 2017
Aqueous acid and alkaline extraction of rare earth elements from coal combustion ash journal July 2018
Distribution and speciation of rare earth elements in coal combustion by-products via synchrotron microscopy and spectroscopy journal July 2018
Effects of roasting additives and leaching parameters on the extraction of rare earth elements from coal fly ash journal August 2018
Rare earth elements and yttrium in coal ash from the Luzhou power plant in Sichuan, Southwest China: Concentration, characterization and optimized extraction journal February 2019
Major element composition controls rare earth element solubility during leaching of coal fly ash and coal by-products journal July 2020
Promotion of lanthanum-supported cobalt-based catalysts for the Fischer–Tropsch reaction journal January 2017
Recent progress in impurity removal during rare earth element processing: A review journal September 2020
Review of rare earth elements recovery from secondary resources for clean energy technologies: Grand opportunities to create wealth from waste journal September 2020
Rare earth elements in fly ashes created during the coal burning process in certain coal-fired power plants operating in Poland – Upper Silesian Industrial Region journal November 2010
A critical review on solvent extraction of rare earths from aqueous solutions journal February 2014
Extraction of rare earths from bauxite residue (red mud) by dry digestion followed by water leaching journal April 2018
Selective precipitation of rare earth from non-purified and purified sulfate liquors using sodium sulfate and disodium hydrogen phosphate journal April 2019
The aqueous geochemistry of gallium, germanium, indium and scandium journal January 2006
Solvent extraction behavior of metal ions and selective separation Sc3+ in phosphoric acid medium using P204 journal January 2019
Ultrafast Synthesis for Functional Nanomaterials journal January 2021
Trends in the Rare Earth Element Content of U.S.-Based Coal Combustion Fly Ashes journal May 2016
Urban Mining of E-Waste is Becoming More Cost-Effective Than Virgin Mining journal March 2018
Comprehensive Understandings of Rare Earth Element (REE) Speciation in Coal Fly Ashes and Implication for REE Extractability journal March 2019
Selective Recovery of Rare Earth Elements from Coal Fly Ash Leachates Using Liquid Membrane Processes journal March 2019
Selective Recovery of Rare Earth Elements from a Wide Range of E-Waste and Process Scalability of Membrane Solvent Extraction journal December 2019
Acrylic Acid-Functionalized Metal–Organic Frameworks for Sc(III) Selective Adsorption journal March 2019
Flash Graphene from Plastic Waste journal October 2020
Ultrafast and Controllable Phase Evolution by Flash Joule Heating journal June 2021
The Future of Flash Graphene for the Sustainable Management of Solid Waste journal October 2021
Recovery of Rare Earth (i.e., La, Ce, Nd, and Pr) Oxides from End-of-Life Ni-MH Battery via Thermal Isolation journal August 2018
Petrology, Mineralogy, and Chemistry of Size-Fractioned Fly Ash from the Jungar Power Plant, Inner Mongolia, China, with Emphasis on the Distribution of Rare Earth Elements journal January 2014
Ultra-fast self-assembly and stabilization of reactive nanoparticles in reduced graphene oxide films journal August 2016
Gram-scale bottom-up flash graphene synthesis journal January 2020
Technospheric Mining of Rare Earth Elements from Bauxite Residue (Red Mud): Process Optimization, Kinetic Investigation, and Microwave Pretreatment journal November 2017
Pathways for greening the supply of rare earth elements in China journal October 2018
Understanding of binding energy calibration in XPS of lanthanum oxide by in situ treatment journal January 2019
Synthesis of monoclinic monazite, LaPO4, by direct precipitation journal January 2009
3-MV compact very fast transient overvoltage generator for testing ultra-high-voltage gas-insulated switchgear journal November 2014
Melting Temperatures of Monazite and Xenotime journal October 1987
Y2O3 Thin Films Characterized by XPS journal July 2001
Surface Y2O3 layer formed on air exposed Y powder characterized by XPS journal October 2020
Red alert journal August 2020
Carbothermal shock synthesis of high-entropy-alloy nanoparticles journal March 2018
Rare earth elements: Mendeleev’s bane, modern marvels journal January 2019
A general method to synthesize and sinter bulk ceramics in seconds journal April 2020
A review of the potential for rare-earth element resources from European red muds: examples from Seydişehir, Turkey and Parnassus-Giona, Greece journal February 2016
Thermochemistry of rare-earth orthophosphates journal September 2001
Foreword for the special section on AC and DC ultra high voltage technologies journal September 2015
Quantitative Mineralogical Characterization of Karst Bauxite Deposits in the Southern Apennines, Italy journal May 2013
U.S. Department of Energy Critical Materials Strategy report December 2010
Thermodynamics and Stability of Rhabdophanes, Hydrated Rare Earth Phosphates REPO4 · n H2O journal December 2018
A Comprehensive Review of Rare Earth Elements Recovery from Coal-Related Materials journal May 2020
Study on the Effect and Mechanism of Impurity Aluminum on the Solvent Extraction of Rare Earth Elements (Nd, Pr, La) by P204-P350 in Chloride Solution journal January 2021
Optimization of Acid Leaching of Rare-Earth Elements from Mongolian Apatite-Based Ore journal June 2016