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  • Improved biodesulfurization of hydrodesulfurized diesel oil using Rhodococcus erythropolis and Gordonia sp.

Improved biodesulfurization of hydrodesulfurized diesel oil using Rhodococcus erythropolis and Gordonia sp.

Biotechnology letters (2008-06-03)
Guo-Qiang Li, Shan-Shan Li, Shi-Wei Qu, Qing-Kun Liu, Ting Ma, Lin Zhu, Feng-Lai Liang, Ru-Lin Liu
ABSTRACT

Substituted benzothiophenes (BTs) and dibenzothiophenes (DBTs) remain in diesel oil following conventional desulfurization by hydrodesulfurization. A mixture of washed cells (13.6 g dry cell wt l(-1)) of Rhodococcus erythropolis DS-3 and Gordonia sp. C-6 were employed to desulfurize hydrodesulfurized diesel oil; its sulfur content was reduced from 1.26 g l(-1) to 180 mg l(-1), approx 86% (w/w) of the total sulfur was removed from diesel oil after three cycles of biodesulfurization. The average desulfurization rate was 0.22 mg sulfur (g dry cell wt)(-1) h(-1). A bacterial mixture is therefore efficient for the practical biodesulfurization of diesel oil.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Thianaphthene-2-carboxylic acid, 98%