Process Considerations in the Biodesulfurization of Crude Oil

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Biodesulfurization offers an attractive alternative to conventional hydrodesulfurization due to the mild operating conditions and reaction specificity afforded by the biocatalyst. The enzymatic pathway existing in Rhodococcus has been demonstrated to oxidatively desulfhrize the organic sulfbr occurring in dibenzothiophene while leaving the hydrocarbon intact. In order for biodesulfiization to realize commercial success, a variety of process considerations must be addressed including reaction rate, emulsion formation and breakage, biocatalyst recovery, and both gas and liquid mass transport. This study compares batch stirred to electro-spray bioreactors in the biodesulfurization of both model organics and actual crudes in terms of their operating costs, ... continued below

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21 Pages

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Borole, A.P. & Kaufman, E.N. October 20, 1998.

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Biodesulfurization offers an attractive alternative to conventional hydrodesulfurization due to the mild operating conditions and reaction specificity afforded by the biocatalyst. The enzymatic pathway existing in Rhodococcus has been demonstrated to oxidatively desulfhrize the organic sulfbr occurring in dibenzothiophene while leaving the hydrocarbon intact. In order for biodesulfiization to realize commercial success, a variety of process considerations must be addressed including reaction rate, emulsion formation and breakage, biocatalyst recovery, and both gas and liquid mass transport. This study compares batch stirred to electro-spray bioreactors in the biodesulfurization of both model organics and actual crudes in terms of their operating costs, ability to make and break emulsions, ability to effect efficient reaction rates and enhance mass transport. Further, sulfim speciation in crude oil is assessed and compared to the sulfur specificity of currently available biocatalyst.

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21 Pages

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  • 5th International Petroleum Environmental Conference, Albuquerque, NM (USA), October 20-23, 1998

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  • Other: DE00001742
  • Report No.: ORNL/CP-100055
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 1742
  • Archival Resource Key: ark:/67531/metadc673213

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  • October 20, 1998

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  • June 29, 2015, 9:42 p.m.

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  • Nov. 17, 2015, 6:37 p.m.

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Borole, A.P. & Kaufman, E.N. Process Considerations in the Biodesulfurization of Crude Oil, article, October 20, 1998; United States. (digital.library.unt.edu/ark:/67531/metadc673213/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.