Enhancement of biodesulfurization by Pseudomonas delafieldii in a ceramic microsparging aeration system |
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| Authors: | Xing Lin Huizhou Liu Feiyan Zhu Xuetuan Wei Qiang Li Mingfang Luo |
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| Affiliation: | (1) College of Materials Science and Opto-Electronic Technology, Graduate University of Chinese Academy of Sciences, Beijing, 100049, China;(2) Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China;(3) Technology Transfer Center, Institute of Microbiology, Chinese Academy of Sciences, No. 10 Bei Si Huan West Road, Haidian District, Beijing, 100190, China; |
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| Abstract: | A 700 ml membrane-aerated, stirred glass reactor equipped with four vertical baffles was constructed. Biodesulfurization of model oil (n-dodecane containing dibenzothiophene—DBT) and hydrodesulfurized diesel was carried out using Pseudomonas delafieldii strain R-8. Microbubble aeration gave an activity of 1.3 mg DBT removed g−1 h−1 and 277 μg sulfur g−1 h−1 for model oil and hydrodesulfurized diesel, respectively. These values were 1.9- and 1.6-times higher than using a traditional bubble aeration process. This is a promising method for the biodesulfurization of petroleum feedstocks. |
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