Journal of Zhejiang University SCIENCE A
(Monthly)

2006   Vol. 7   Suppl. II   p. 371-375

Effects of surfactant on biodesulfurization by Corynebacterium sp. ZD-1 in the presence of organic phase

Wang Miao-Dong^†1,2, Li Wei², Shi Yao², Wang Da-Hui², Feng Hai^†‡1

(¹College of Pharmacy, Zhejiang University of Technology, Hangzhou 310014, China)
(²Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China)
^‡ Corresponding Author
^†E-mail: wangmd9999@163.com; fenghai289289@163.com
Received Mar. 10, 2006 revision accepted June 5, 2006

Abstract: The effects of surfactants on dibenzothiophene (DBT) degradation by Corynebacterium sp. ZD-1 were investigated in hydrocarbon aqueous biphasic (O/W) systems in shake flask. Among Brij-35, Tween-80, Triton-100X and β-cyclodextrin, Tween-80 was a suitable surfactant to improve the desulfurization rate of dibenzothiophene. The amount of 2-hydroxybiphenyl (2-HBP) formed with Tween-80 present was about 50% more than that formed without surfactant. The results demonstrated that Tween-80 could improve the mass transfer of DBT between organic and aqueous phases, and could be used in dibenzothiophene biodesulfurization systems.

Key words: Biodesulfurization, Tween-80, Dibenzothiophene, Corynebacterium sp.
doi:10.1631/jzus.2006.AS0371             CLC number: TQ02

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