Actions for Advanced characterization of forms of chlorine, organic sulfur and trace elements in available coals from operating Illinois mines. Quarterly report, 1 March 1995--31 May 1995 [electronic resource].

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Advanced characterization of forms of chlorine, organic sulfur and trace elements in available coals from operating Illinois mines. Quarterly report, 1 March 1995--31 May 1995 [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1995.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
19 pages : digital, PDF file
Additional Creators
United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The goals of the study are (1) to use X-ray absorption near-edge spectroscopy (XANES) to determine forms of chlorine (inorganic, ionic, and organic) and forms of organic sulfur (organic sulfide and thiophenic sulfur) in as-shipped coals from Illinois mines, (2) to obtain basic data on chlorine removal via froth flotation at fine (−200 mesh) and ultrafine (−400 mesh) particle sizes, and (3) to evaluate XANES for direct assessment of the organic/inorganic affinities of trace elements. In the last quarter, chlorine leachability during fine wet grinding of 21 coal samples was examined. In this quarter, the effect of froth flotation/release analysis (FF/RA) on the Cl contents of coals ground to −200 and −400 mesh sizes is completed. The results indicate that a combination of wet grinding and FF/RA reduced Cl contents in most samples from regions 1,2, and 3 by 29--81% and in one sample from region 4S by 60%. The chlorine and sulfur spectra of 21 coals, from five distinct geographic locations in Illinois, were examined. The chlorine XANES spectra for the coals are similar and chloride anion was determined to be the predominant form of chlorine. The sulfur XANES data for these coals show that a majority (61% to 82%) of organic sulfur in the thiophenic form. The ratios of thiophenic sulfur to total organic sulfur show a correlation with sample location. For samples from regions 1 and 2, the ratios are relatively lower (61% to 64%), whereas, for samples from regions 3, 4H, and 4S, the ratios are relatively higher (64% to 82%). A more detailed interpretation in these correlations will be discussed in the next report.
Report Numbers
E 1.99:doe/pc/92521--t229
doe/pc/92521--t229
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
12/31/1995.
"doe/pc/92521--t229"
"DE96007001"
Lytle, J.M.; Li, Y.C.; Chou, C.L.; Huffman, G.P.; Huggins, F.E.; Chou, M.I.M.; Demir, I; Ruch, R.R.; Bhagway, S.
Illinois State Geological Survey, Urbana, IL (United States)
Funding Information
FC22-92PC92521
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