NDLI: Kinetic analysis of biodesulfurization of model oil containing multiple alkyl dibenzothiophenes

Content Provider	Springer Nature Link
Author	Zhang, Shi Han Chen, Han Li, Wei
Copyright Year	2012
Abstract	Biodesulfurization is regarded as a promising alternative technology for desulfurization from diesel oil due to its mild operating conditions and its ability to remove sulfur from alky dibenzothiophenes (Cx-DBTs). The diesel oil contains complex mixtures of Cx-DBTs in which individual microbial biodesulfurization may be altered. In this work, interactions among three typical Cx-DBTs such as dibenzothiophenes (DBT), 4-methyldibenzothiophene (4-MDBT), and 4,6-dimethyldibenzothiophene (4,6-DMDBT) were investigated using Mycobacterium sp. ZD-19 in an airlift reactor. The experimental results indicated that the desulfurization rates would decrease in the multiple Cx-DBTs system compared to the single Cx-DBT system. The extent of inhibition depended upon the substrate numbers, concentrations, and affinities of the co-existing substrates. For example, compared to individual desulfurization rate (100 %), DBT desulfurization rate decreased to 75.2 % (DBT + 4,6-DMDBT), 64.8 % (DBT + 4-MDBT), and 54.7 % (DBT + 4,6-DMDBT + 4-MDBT), respectively. This phenomenon was caused by an apparent competitive inhibition of substrates, which was well predicted by a Michaelis–Menten competitive inhibition model.
Starting Page	2193
Ending Page	2200
Page Count	8
File Format	PDF
ISSN	01757598
Journal	Applied Microbiology and Biotechnology
Volume Number	97
Issue Number	5
e-ISSN	14320614
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-04-19
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Biodesulfurization kinetics Competitive inhibition Multisubstrates Mycobacterium sp. Biotechnology Microbiology Microbial Genetics and Genomics
Content Type	Text
Resource Type	Article
Subject	Medicine Applied Microbiology and Biotechnology Biotechnology

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