Download or read book Advanced Characterization of Forms of Chlorine Organic Sulfur and Selected Trace Elements in Available Coals from Operating Illinois Mines written by and published by . This book was released on 2003 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goals of this study were (1) to use x-ray absorption near-edge spectroscopy (XANES) to examine forms of Cl and organic sulfur in as-shipped coals from Illinois mines, (2) to obtain basic data on Cl removed via froth flotation of the coals ground to fine and ultrafine particle sizes and (3) to evaluate the XANES method for direct assessment of the organic and iroganic affinities of trace elements in Illinois coals.
Download or read book Advanced Characterization of Forms of Chlorine Organic Sulfur and Trace Elements in Available Coals from Operating Illinois Mines Quarterly Report 1 December 1994 28 February 1995 written by and published by . This book was released on 1995 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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. This is a cooperative effort among the Illinois State Geological Survey, the University of Kentucky, and Western Kentucky University. In this quarter, chlorine leachability during fine wet grinding of 21 coal samples was examined. The results show a general improvement in chlorine removal by grinding coals to -200 mesh, but do not show further improvement by additional grinding to -400 mesh. The chlorine and sulfur spectra of five coals, each from a distinct geographic location in Illinois, were examined. The chlorine XANES spectra for the five coals are similar and chloride anion was determined to be the predominant form of chlorine. The sulfur XANES data for the same coals show that a majority (61% to 82%) of organic sulfur in the coals is contributed from thiophenic sulfur. The distribution of organic sulfur shows that the high sulfur coals tend to have more organic sulfide than low sulfur coals. A more detailed interpretation may be possible after a complete analysis of all the samples selected. Evaluating the possibility of XANES for direct assessment of the organic/inorganic affinities of trace elements in an Illinois coal was completed.
Download or read book 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 written by and published by . This book was released on 1995 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Advanced Characterization of Forms of Chlorine Organic Sulfur and Trace Elements in Available Coals from Operating Illinois Mines Quarterly Technical Report September 1 November 30 1994 written by and published by . This book was released on 1994 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: A set of 34 as-shipped coal samples from operating Illinois mines is available for this study to determine the forms of chlorine and sulfur and leachability of chlorine during wet grinding and froth flotation. The forms of chlorine may be inorganic, ionic, and organic. The forms of organic sulfur will include organic sulfide and thiophenic sulfur. Chlorine can be leached from coal during wet grinding. The potential for removal of chlorine from the samples during fine ( -200 mesh) and ultrafine ( -400 mesh) wet-grinding and during froth flotation designed primarily for removal of pyrite and ash will be determined. In addition, the organic/inorganic affinities of trace elements in as-shipped Illinois coals will be assessed so that the current physical coal cleaning results may be better interpreted.
Download or read book Geology of Fossil Fuels Coal written by Yang Qi and published by CRC Press. This book was released on 2020-04-15 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains papers presented at the 30th International Geological Congress on coal. It includes information on the applications of high-resolution sequence stratigraphy to paralicand terrestrial coal-bearing strata and petrology and depositional environment of Early Jurassic coal.
Download or read book Illinois Minerals written by and published by . This book was released on 2003 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-05 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Illinois State Geological Survey written by Illinois State Geological Survey and published by . This book was released on 2003 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications of the State of Illinois written by Illinois. Office of Secretary of State and published by . This book was released on 2003 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Final Technical Report written by Illinois Clean Coal Institute and published by . This book was released on 1995 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report written by Illinois State Geological Survey and published by . This book was released on 2003 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trace Elements in Coal written by Dalway J. Swaine and published by Butterworth-Heinemann. This book was released on 2013-10-22 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trace Elements in Coal focuses on the compositions, reactions, and properties of trace elements in coal. The book first discusses the origin of trace elements in coal. The formation of peat; geological and geochemical aspects of coal seams; geology of Australian coals; constitution of coal; history of trace elements in coal; and coal mining in Australia are discussed. The text also clarifies the mode of occurrence of trace elements in coal. The identification of minerals in coal; silicon-rich minerals; carbonate minerals; sulfide minerals; lignites and brown coals; and phosphates are discussed. The book then underscores the methods of analysis. Inductively coupled plasma atomic emission spectrometry; atomic absorption spectrometry; spark source mass spectrometry; and neuron activation analysis are described. The text also focuses on the contents of trace elements in coal; comparisons of coal with shale and soil; relationship of radioactivity and coal; and relevance of trace elements in coal. The book is a good source of data for readers wanting to study the trace elements in coal.
Download or read book Characterization of Volatile Sulfur Compounds Produced from Illinois Coal Chars written by Mei-In Melissa Chou and published by . This book was released on 1985 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Occurrence and Distribution of Potentially Volatile Trace Elements in Coal written by R. R. Ruch and published by . This book was released on 1974 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Trace Elements in Coal by Spark source Mass Spectrometry written by T. Kessler and published by . This book was released on 1973 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Organic Sulfur Compounds in Coals and Single Macerals Using Selective Oxidation written by Alan M. Paredes and published by . This book was released on 1990 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
