Desulfurization microbial

Kargi, F. 1982. Microbial Coal Desulfurization. Microbial Enzyme Technol. 4( 1) 13.20. 

A mixed microbial community was isolated for thiophene desulfurization using enrichments from oilfield samples and showed the presence of biphenyl as a by-product. However, a pure strain could not be obtained due to over-competence by homo-acetogenic bacteria in the consortium [23],... 

Desulfurization using purified enzymes Investigations into enzymatic desulfurization as an alternative to microbial desulfurization has revealed several enzymes capable of the initial oxidation of sulfur. A study reported use of laccase with azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) as a mediator for oxidation of DBT [181]. The rate of this reaction was compared to hydrogen peroxide-based phosphotungstic acid-catalyzed oxidation and the latter was found to be about two orders of magnitude higher. The authors also oxidized diesel oil sulfur to no detectable levels via extraction of the oxidized sulfur compounds from diesel. In Table 9, the enzymes used in oxidation of DBT to DBTO are reported. 

A class of enzymes capable of removing sulfur from alkane sulfonates exists, which may have relevance in microbial desulfurization of alkyl sulfides. A gene cluster ssuEADCB was identified in E. coli. The enzyme SsuD was capable of conversion of pentane sulfonic acid to pentaldehyde and sulfite. It was reported to be capable of conversion of alkyl sulfonates from C2 to CIO, as well as substituted ethanesulfonates and sulfonated buffers. The SsuE was a flavin-reducing enzyme that provided FMNH2 to the SsuD. 

Improving stability of microbial strains in organic solvents is another challenge for enabling commercialization of desulfurization processes for gasoline and diesel applications. This was a target for a project in Klibanov s group [231], whose approach... 

Kargi, F., and Robinson, J. M., Microbial desulfurization of coal by thermophilic microorganism Sulfolobus acidocaldarius. Biotechnol. Bioeng., 1982. 24(9) pp. 2115-2121. 

Kohler, M. Genz, I.-L. Schicht, B., and Eckart, V., Microbial Desulfurization of Petroleum and Heavy Petroleum Fractions. 4. Anaerobic Degradation of Organic Sulfur Compounds. Zentralbl. Mikrobiol., 1984. 139 pp. 239-247. 

Abbad-Andaloussi, S. Warzywoda, M., and Monot, F., Microbial desulfurization of diesel oils by selected bacterial strains. Oil Gas Science and Technology-Revue Institut Francais Du Petrole, 2003. 58(4) pp. 505-513. 

Finnerty, W. R., and Robinson, M., Microbial desulfurization of fossil fuels A review. Biotechnol. Bioengineer. Symp., 1986. 16 pp. 205-221. 

Lee, M. Senius, J. D., and Grossman, M. J., Sulfur-specific microbial desulfurization of sterically hindered analogs of dibenzothiophene. Applied and Environmental Microbiology, 1995. 61(12) pp. 4362-4366. 

Gallagher, J. R. Olson, E. S., and Stanley, D. C., Microbial Desulfurization of Dibenzoth-iophene A Sulfur Specific Pathway. Ferns Microbiology Letters, 1993. 107 pp. 31-36. 

Folsom, B. R. Schieche, D. R. DiGrazia, P. M., et al., Microbial Desulfurization of Alkylated Dibenzothiophenes From a Hydrodesulfurized Middle Distillate by Rhodococcus Erythropo-lis 1-19. Applied and Environmental Microbiology, 1999. 65(11) pp. 4967-4972. 

Kobayashi, M. Horiuchi, K. Yoshikawa, O., et al., Kinetic analysis of microbial desulfurization of model and light gas oils containing multiple alkyl dibenzothiophenes. Bioscience Biotechnology and Biochemistry, 2001. 65(2) pp. 298-304. 

Constanti, M. Giralt, J., and Bordens, A., Degradation and Desulfurization of Dibenzothiophene Sulfone and Other Sulfur Compounds by Agrobacterium MC501 and a Mixed Culture. Enzyme and Microbial Technology, 1996. 19 pp. 214-219. 

Nakahara, T. Nakajima, T. Nomura, N., and Nekotsuka, S., Microbial desulfurization of sulfur-containing hetero-cyclic compound Patent No. JP10243791. 1998, Sep. 14. 

Kankipati, P., and Ju, L. K., Microbial Desulfurization of Petroleum Fundamental Study on Dibenzothiophene Desulfurization by Sulfolobus Acidocaldarius. In Exploration Issues and Solutions in Petroleum Exploration, Production and Refining. 1994. Pennwell Books. 605-614. 

Olson, G. Microbial catalyst for desulfurization of fossil fuels. Patent No. US6124130. 2000, Sep. 26. 

Finnerty, W. R. Shockley, K. Attaway, H., Microbial desulfurization and denitrogenation of hydrocarbons., in Microbial Enhanced Oil Recovery, Zajic, J.E., et al Editors. 1983, Penwell Tulsa, Okla. pp. 83-91. 

Lee, M. K. Prince, R. C. Pickering, I. J., et al., Microbial Desulfurization of Crude Oil Distillate Fractions Analysis of the Extent of Sulfur Removal and the Effect on Remaining Sulfur. Abstracts of Papers of the American Chemical Society, 1997. 213 p. 11-FUEL. 

Matsui, T. Hirasawa, K. Konishi, J., et al., Microbial Desulfurization of Alkylated Diben-zothiophene and Alylated Benzothiophene by Recombinant Rhodococcus Sp. Strain, T09. Appl. Microbiol. Biotechnol., 2001. 56(1-2) pp. 196-200. 

Hydrocarbon Microbiology biodegradation mechanisms of oil products (gasoline, kerosene, diesel, etc.), pyrolysis, polycyclic aromatic hydrocarbons, chlorinated solvents, and ether fuels refining processes (e.g., oil product microbial desulfurization) and oil production processes (e.g., bacterial corrosion). 

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