Microbial Biodesulfurization Of Dibenzo-Thiophene In Egyptian Petroleum Crude Oil

MEOR - Microbial Enhanced Oil Recovery - is a hot topic in desulfurization. We ran across the following article in a recent search ...

Microbial Biodesulfurization Of Dibenzo-Thiophene In Egyptian Petroleum Crude Oil (2009)
Biodesulfurization has been studied as an alternative to HDS for removal of organic sulfur from fuels. The use of hydrocarbon degradation pathways that attacked DBT was unsuccessful because these systems relied on the oxidation and mineralization of the carbon skeleton instead of sulfur removal. Therefore, it significantly reduced the fuel value of the desulfurized end product. More recently, bacteria that desulfurize DBT and a variety of other organic sulfur compounds typically found in petroleum oils via a sulfur selective oxidative pathway that does not remove carbon have been isolated. This pathway involves the sequentional oxidation of the sulfur moiety followed by cleavage of the carbon sulfur bonds (Monticello et al., 1985; Grossman, 1996).

This study aims to isolate, purify and identify some microorganisms that have the ability to degrade DBT and fossil fuelbiodesulfurization (sulfur removal) without concomitant metabolism of hydrocarbon value of the fuel. In this study we describe of the microbial desulfurization of DBT by two yeast isolates under the best culture conditions and its application. The possibility of using these isolates for application was discussed.

Source:
http://egyptseb.org/journal/index.php?module=documents&JAS_DocumentManager_op=downloadFile&JAS_File_id=194

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