Chemistry: molecular biology and microbiology – Process of utilizing an enzyme or micro-organism to destroy... – Petroleum oil or shale oil treating
Patent
1994-08-30
1996-04-23
Czaja, Donald E.
Chemistry: molecular biology and microbiology
Process of utilizing an enzyme or micro-organism to destroy...
Petroleum oil or shale oil treating
435262, 435281, 44624, C10G 3200, C12S 102
Patent
active
055102654
ABSTRACT:
A method for the deep desulfurization of a liquid fossil fuel containing organic sulfur comprising aromatic sulfur-bearing heterocycles is described, wherein the fossil fuel is (a) subjected to hydrodesulfurization or microbial desulfurization, (b) contacted with a biocatalyst in an aqueous medium in an amount and under conditions sufficient for the conversion of aromatic sulfur-bearing heterocycles to inorganic sulfur, wherein the biocatalyst comprises bacteria or a substantially cell-free preparation thereof having the capability of the parent microorganism for catalyzing the removal of sulfur from aromatic sulfur-bearing heterocycles, thereby preparing a deeply desulfurized fossil fuel; and (c) separated from the aqueous medium.
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Czaja Donald E.
Energy BioSystems Corporation
Reardon T. J.
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