SCI和EI收录∣中国化工学会会刊

›› 2012, Vol. 20 ›› Issue (1): 47-51.

• • 上一篇    下一篇

Simultaneous Removal of Thiophene and Dibenzothiophene by Immobilized Pseudomonas delafieldii R-8 cells

唐煌1,2, 李强1, 王泽龙1,2, 闫道江1,2, 邢建民1   

  1. 1. National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sci-ences, Beijing 100190, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2011-05-09 修回日期:2011-11-16 出版日期:2012-02-28 发布日期:2012-05-03
  • 通讯作者: XING Jianmin,E-mail:jmxing@home.ipe.ac.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (21076216,30970046)

Simultaneous Removal of Thiophene and Dibenzothiophene by Immobilized Pseudomonas delafieldii R-8 cells

TANG Huang1,2, LI Qiang1, WANG Zelong1,2, YAN Daojiang1,2, XING Jianmin1   

  1. 1. National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sci-ences, Beijing 100190, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2011-05-09 Revised:2011-11-16 Online:2012-02-28 Published:2012-05-03
  • Supported by:
    Supported by the National Natural Science Foundation of China (21076216,30970046)

摘要: Biodesulfurization(BDS) is a promising technology for deep desulfurization.In this work,Pseudomonas delafieldii R-8 cells are immobilized in calcium alginate beads and used for BDS of transportation fuels.It is found that thiophene and dibenzothiophene(DBT) can be simultaneously metabolized by immobilized R-8 cells.The initial sulfur content in the model oil is 300 mg·kg-1(thiophene:DBT 1:1).After 10 h of treatment,the thiophene concentration is reduced by 40%,while DBT is reduced by 25%.The utilization rate of thiophene is faster than that of DBT.Moreover,the oil/water ratio of alginate immobilized cells is studied to reduce the water volume in desulfurization systems.Long-term recycling of BDS by alginate immobilized cells is carried out with oil/water ratio at 5:1.The immobilized cells are successfully reused over 15 batch cycles.In the last batch,the desulfurization activity remains at least 75% of the first batch.

关键词: biodesulfurization, simultaneous removal, alginate immobilization, long-term recycling

Abstract: Biodesulfurization(BDS) is a promising technology for deep desulfurization.In this work,Pseudomonas delafieldii R-8 cells are immobilized in calcium alginate beads and used for BDS of transportation fuels.It is found that thiophene and dibenzothiophene(DBT) can be simultaneously metabolized by immobilized R-8 cells.The initial sulfur content in the model oil is 300 mg·kg-1(thiophene:DBT 1:1).After 10 h of treatment,the thiophene concentration is reduced by 40%,while DBT is reduced by 25%.The utilization rate of thiophene is faster than that of DBT.Moreover,the oil/water ratio of alginate immobilized cells is studied to reduce the water volume in desulfurization systems.Long-term recycling of BDS by alginate immobilized cells is carried out with oil/water ratio at 5:1.The immobilized cells are successfully reused over 15 batch cycles.In the last batch,the desulfurization activity remains at least 75% of the first batch.

Key words: biodesulfurization, simultaneous removal, alginate immobilization, long-term recycling

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