The significance of chemical markers in bioprocessing of fossil fuels

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Biochemical conversion of crude oils is a multi-step process proceeding through a series of biochemical reactions. These reactions can be characterized by a set of chemical markers which are associated with the chemical composition of crude oils. Reactions with heavy crude oils indicate that there is an overall decrease in the concentration and chemical speciation of organic sulfur compounds, and a redistribution of hydrocarbons and organometallic species. The contents of trace metals in the crude oils, such as nickel and vanadium, also decrease. Further, heavy ends of crudes, containing the asphaltenes and the polar nitrogen, sulfur, and oxygen containing fractions, ... continued below

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16 p.

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Premuzic, E.T.; Lin, M.S. & Manowitz, B. December 31, 1993.

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Biochemical conversion of crude oils is a multi-step process proceeding through a series of biochemical reactions. These reactions can be characterized by a set of chemical markers which are associated with the chemical composition of crude oils. Reactions with heavy crude oils indicate that there is an overall decrease in the concentration and chemical speciation of organic sulfur compounds, and a redistribution of hydrocarbons and organometallic species. The contents of trace metals in the crude oils, such as nickel and vanadium, also decrease. Further, heavy ends of crudes, containing the asphaltenes and the polar nitrogen, sulfur, and oxygen containing fractions, as well as the organometallic compounds and complexes, are biochemically converted to lower molecular weight chemical species. In the studies reported in this paper, microorganisms used to mediate such reactions were thermophilic (>60{degrees}C) and pressure tolerant (up to 2500 psi). These organisms are also capable of biochemical conversion of bituminous and lignite coals in an analogous manner to their action on crude oils and follow similar trends characterized by chemical markers.

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16 p.

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OSTI as DE97004969

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  • 4. fuel processing technology international symposium on bioprocessing of fossil fuels, Alghero (Italy), 21-23 Sep 1993

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  • Other: DE97004969
  • Report No.: CONF-9309528--1
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 477747
  • Archival Resource Key: ark:/67531/metadc684410

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  • December 31, 1993

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  • July 25, 2015, 2:21 a.m.

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  • Nov. 10, 2015, 9:29 p.m.

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Premuzic, E.T.; Lin, M.S. & Manowitz, B. The significance of chemical markers in bioprocessing of fossil fuels, article, December 31, 1993; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc684410/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.