Microbial desulfurization of fuel oil |
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Authors: | Ping Xu Fuli Li Jian Yu Cuiqing Ma Jianjiang Zhong Yinbo Qu H D Blankespoor |
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Institution: | (1) State Key Lab of Microbial Technology, Shandong University, 250100 Jinan, China;(2) Department of Chemical Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China;(3) State Key Lab of Bioreactor Engineering, East China University of Science and Technology, 200237 Shanghai, China;(4) Biology Department of Hope College, 49423 Holland, MI, USA |
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Abstract: | Culture conditions of desulfurization microbes were investigated with a bioreactor controlled by computer.Factors such as pH, choice of carbon source, optimal concentrations of carbon, nitrogen and sulfur sources were determined. The addition of carbon in a culture with a constant pH greatly improved the growth of Rhodococcus. Cells and cell debris from microbes rested using a sulfur- specific pathway were used to desulfurize diesel oil treated by hydrodesulfurization (acquired from the Research Institute of Fushun Petroleum with total sulfur level at 205 μg/mL).Strains 1awq, IG, X7B, ZT, ZCR, and a mixture of No. 5 and No. 6, were used in the biodesulfurization process. The reduction of total sulfur was between 10.6% and 90.3%. |
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Keywords: | dibenzothiophene (DBT) biodesuffurization (BDS) hydrodesuifurization (HDS) fuel oil |
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