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| Effects of surfactant on biodesulfurization by Corynebacterium sp. ZD-1 in the presence of organic phase |
| Wang Miao-Dong, Li Wei, Shi Yao, Wang Da-Hui, Feng Hai |
| College of Pharmacy, Zhejiang University of Technology, Hangzhou 310014, China; Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China |
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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.
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Received: 10 March 2006
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