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Selection of adsorbents for in-situ coupling technology of adsorptive desulfurization and biodesulfurization

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Abstract

In-situ coupling of adsorptive desulfurization and biodesulfurization is a new desulfurization technology for fossil oil. It has the merits of high-selectivity of biodesulfurization and high-rate of adsorptive desulfurization. It is carried out by assembling nano-adsorbents onto surfaces of microbial cells. In this work, In-situ coupling desulfurization technology of widely used desulfurization adsorbents of γ-Al2O3, Na-Y molecular sieves, and active carbon with Pseudomonas delafieldii R-8 were studied. Results show that Na-Y molecular sieves restrain the activity of R-8 cells and active carbon cannot desorb the substrate dibenzothiophene (DBT). Thus, they are not applicable to in-situ coupling desulfurization technology. Gamma-Al2O3 can adsorb DBT from oil phase quickly, and then desorb it and transfer it to R-8 cells for biodegradation, thus increasing desulfurization rate. It is also found that nano-sized γ-Al2O3 increases desulfurization rate more than regular-sized γ-Al2O3. Therefore, nano-γ-Al2O3 is regarded as the better adsorbent for this in-situ coupling desulfurization technology.

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Authors and Affiliations

  1. State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100080, China

    Zhang HuaiYing, Liu QingFen, Li YuGuang, Li WangLiang, Xiong XiaoChao, Xing JianMin & Liu HuiZhou

  2. Graduate University of Chinese Academy of Sciences, Beijing, 100049, China

    Zhang HuaiYing, Li YuGuang, Li WangLiang & Xiong XiaoChao

Authors
  1. Zhang HuaiYing
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  2. Liu QingFen
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  3. Li YuGuang
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  4. Li WangLiang
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  5. Xiong XiaoChao
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  6. Xing JianMin
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  7. Liu HuiZhou
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Corresponding authors

Correspondence to Xing JianMin or Liu HuiZhou.

Additional information

Supported by National Basic Research Program of China (Grant No: 2006CB202507) and National High-tech R&D Program (Grant No: 2006AA02Z209)

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Zhang, H., Liu, Q., Li, Y. et al. Selection of adsorbents for in-situ coupling technology of adsorptive desulfurization and biodesulfurization. Sci. China Ser. B-Chem. 51, 69–77 (2008). https://doi.org/10.1007/s11426-007-0118-5

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  • DOI: https://doi.org/10.1007/s11426-007-0118-5

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