Signatures of rare earth element distributions in fly ash derived from the combustion of Central Appalachian, Illinois, and Powder River basin coals
- University of Kentucky, Lexington, KY (United States); OSTI
- University of Kentucky, Lexington, KY (United States)
- Duke University, Durham, NC (United States)
We report the distribution of Rare Earth elements (REE) in coal-derived fly ashes can have distinctive patterns when fly ashes are produced from different coals within or between basins, such as the Pennsylvanian Class F fly ashes from the Illinois and Central Appalachian basins. Both the Fire Clay coal and a blend of a number of eastern Kentucky coals show strong Gd peaks and an H-type distribution in the Upper Continental Crust-corrected plots. The Fire Clay coal-derived ash has a higher heavy REE concentration than the blended coal-derived ash. The Illinois Basin-derived fly as has an overall lower REE concentration than the latter ashes. Class C fly ash derived from Powder River Basin coals has, with the exception of an Eu peak, a flatter distribution of REE and an overall L-type or indistinct H- versus L-type distribution. The signatures of the REE in fly ashes may be useful in predicting their behavior in the extraction of the REE; simple extrapolations from the basic concentrations and the predicted extraction percentages for ashes from different basins are not necessarily indicative of the actual distribution of the extracted REE.
- Research Organization:
- Duke University, Durham, NC (United States); University of Kentucky, Lexington, KY (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE; USDOE Office of Fossil Energy (FE)
- Grant/Contract Number:
- FE0026952
- OSTI ID:
- 1977126
- Alternate ID(s):
- OSTI ID: 1785033
- Journal Information:
- Fuel, Journal Name: Fuel Journal Issue: C Vol. 301; ISSN 0016-2361
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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