Regulation of coal polymer degradation by fungi. Tenth Quartery report, October 1996--December 1996

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It has long been known that low rank coal such as leonardite can be solubilized by strong base (>pH 12). Recent discoveries have also shown that leonardite is solubilized by Lewis bases at considerably lower pH values and by fungi that secrete certain Lewis bases (i.e., oxalate ion). During the current reporting period we have studied the ability of a strong base (sodium hydroxide, pH 12), and two fungi, Phanerochaete chrysosporium and Trametes versicolor, to solubilize Argonne Premium Coals. In general, Argonne Premium Coals were relatively resistant to base mediated solubilization. However, when these coals were preoxidized (150{degrees}C for seven ... continued below

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15 p.

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Irvine, R.L. & Bumpus, J.A. January 28, 1997.

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  • Irvine, R.L. Univ. of Notre Dame, IN (United States). Dept. of Civil Engineering and Geological Sciences
  • Bumpus, J.A. Univ. of Northern Iowa, Cedar Falls, IA (United States). Dept. of Chemistry

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Description

It has long been known that low rank coal such as leonardite can be solubilized by strong base (>pH 12). Recent discoveries have also shown that leonardite is solubilized by Lewis bases at considerably lower pH values and by fungi that secrete certain Lewis bases (i.e., oxalate ion). During the current reporting period we have studied the ability of a strong base (sodium hydroxide, pH 12), and two fungi, Phanerochaete chrysosporium and Trametes versicolor, to solubilize Argonne Premium Coals. In general, Argonne Premium Coals were relatively resistant to base mediated solubilization. However, when these coals were preoxidized (150{degrees}C for seven days), substantial amounts of several coals were solubilized. Most affected were the Lewiston-Stockton bituminous coal, the Beulah-Zap lignite, the Wyodak-Anderson subbituminous coal and the Blind Canyon bituminous coal. Argonne Premium Coals were previously shown by us to be relatively resistant to solubilization by sodium oxalate. When preoxidized coals were treated with sodium oxalate, only the Beulah-Zap lignite was substantially solubilized. Although very small amounts of the other preoxidized coals were solubilized by treatment with oxalate, the small amount of solubilization that did take place was generally increased relative to that observed for coals that were not preoxidized. None of the Argonne Premium Coals were solubilized by P. chrysosporium or T. versicolor. Of considerable interest, however, is the observation that P. chrysosporium and T. versicolor mediated extensive solubilization of Lewiston-Stockton bituminous coal, the Beulah-Zap lignite and the Wyodak-Anderson subbituminous coal.

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15 p.

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OSTI as DE97052311

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  • Other Information: PBD: 28 Jan 1997

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  • Other: DE97052311
  • Report No.: DOE/PC/94209--T10
  • Grant Number: FG22-94PC94209
  • DOI: 10.2172/475613 | External Link
  • Office of Scientific & Technical Information Report Number: 475613
  • Archival Resource Key: ark:/67531/metadc681330

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  • January 28, 1997

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  • July 25, 2015, 2:21 a.m.

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  • Nov. 11, 2015, 12:38 p.m.

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Irvine, R.L. & Bumpus, J.A. Regulation of coal polymer degradation by fungi. Tenth Quartery report, October 1996--December 1996, report, January 28, 1997; United States. (digital.library.unt.edu/ark:/67531/metadc681330/: accessed August 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.