alexa Biodesulfurization |Journal Of Petroleum And Environmental Biotechnology

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The removal of sulfur or sulfur compounds (as from coal or flue gas) using biological agents is called as biodesulfurization. A single vertical rotating immobilized cell reactor (VRICR) with the bacterium R. erythropolis, as a biocatalyst, was developed and used for investigation of biodesulfurization process with its two successive stages of cell growth and desulfurization activity. With a rotation speed of 15 rpm and oxygen transfer rate of 90 mM O2.l-1.h-1, immobilized cell concentration of up to 70.0 g.l-1 was achieved during the first stage and further used, in the second, to carry out a stable continuous desulfurization of model oil (dibenzothiophene in hexadecane). A steady state with specific desulfurization rate as high as 167 mM 2HBP.Kg-1.h-1 and sulfur removal efficiency of 100% were maintained for more than 120 h. The proposed integrated biodesulfurization process utilizing the VRICR has the potential to lower operating costs and support possibilities of commercial application at the expense of Hydrodesulfurization process currently employed. Sulfur emission through fossil fuel combustion is a major cause of acid rain and air pollution. In order to compete successfully with Hydrodesulfurization, Biodesulfurization process with a suitable biocatalytic design has been developed.
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Last date updated on November, 2020