Abstract
Graphitic carbons from the combustion of bituminous coals and, perhaps, other coal ranks, tend to capture iron and a number of hazardous elements, including As, Hg, and Se. Rare earth elements in fly ashes occur in minerals, such as monazite, xenotime, and davidite. They also occur in sub-nm particles, probably in a mineral form, within the Al–Si glass on the investigated fly ashes. Just as graphitic carbons can capture Fe and hazardous elements, the carbons surrounding the fly ash glass and magnetic particles captures or encapsulates a broad suite of rare earth elements.
Document Type
Review
Publication Date
9-29-2020
Digital Object Identifier (DOI)
https://doi.org/10.1016/j.engeos.2020.09.003
Funding Information
This study was completed as part of U.S. Department of Energy contracts DE-FE0027167 and DE-FE0026952 and National Science Foundation grants CBET-1510965 and CBET-1510861 to Duke University and the University of Kentucky, respectively.
Repository Citation
Hower, James C. and Groppo, John G. Jr., "Rare Earth-Bearing Particles in Fly Ash Carbons: Examples from the Combustion of Eastern Kentucky Coals" (2020). Center for Applied Energy Research Faculty and Staff Publications. 39.
https://uknowledge.uky.edu/caer_facpub/39
Graphical abstract
Notes/Citation Information
Published in Energy Geoscience, v. 2, issue 2.
© 2020 Sinopec Petroleum Exploration and Production Research Institute
This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/).