C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
C10G 32/00 (2006.01) C12S 1/02 (2006.01)
Patent
CA 2109091
2109091 9219700 PCTABS00017 A continuous cyclic process for desulfurizing a petroleum liquid which contains organic sulfur molecules, a significant portion of which are comprised of sulfur-bearing heterocycles. This process involves oxygenating the petroleum liquid and treating it with a biocatalyst capable of catalyzing the sulfur-specific oxidative cleavage of organic carbon-sulfur bonds in sulfur-bearing aromatic heterocyclic molecules such as dibenzothiophene. A particularly preferred biocatalyst is a culture of mutant Rhodococous rhodocrous) bacteria, ATCC No. 53968. In the present process, the activity of this biocatalyst is regenerated; it can be used for many cycles of treatment. A system for conducting the continuous cyclic process of biocatalytic desulfurization of petroleum liquids is also disclosed.
Energy Biosystems Corporation
Swabey Ogilvy Renault
LandOfFree
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