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Improved biodesulfurization of hydrodesulfurized diesel oil using Rhodococcus erythropolis and Gordonia sp. |
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| Authors: | Guo-Qiang Li Shan-Shan Li Shi-Wei Qu Qing-Kun Liu Ting Ma Lin Zhu Feng-Lai Liang Ru-Lin Liu |
| Institution: | (1) College of Environment Sciences and Engineering, Nankai University, Weijin Road 94, Tianjin, 300071, China;(2) Tianjin Key Laboratory for Microbial Functional Genomics, Key Laboratory of Molecular Microbiology and Technology Ministry of Education, College of Life Sciences, Nankai University, Weijin Road 94, Tianjin, 300071, China;(3) College of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China |
| 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. |
| Keywords: | Biodesulfurization Gordonia sp Hydrodesulfurized diesel oil Mixed bacteria Rhodococcus erythropolis |
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