Biodesulfurization of the mixture of dibenzothiophene and its alkylated derivatives by Sphingomonas subarctica T7b

Organosulfur compounds classified as dibenzothiophenes (DBTs) and their derivatives are contained in petroleum. When used fuel, these substances release SOx emissions, thus contributing to air pollution, acid rain, climate change. Therefore, it is necessary reduce the content of organic sulfur fuels one way achieve this through bacterial desulfurization. This study reports biodesulfurization process a mixture DBT, 4-hexyl 4,6-dibutyl various organosulfur light gas oil (LGO). The experiment was conducted by treating 1 mL aromatic with 100 mg/L \textit{n}-tetradecane or LGO 5 mineral salts sulfur-free medium, incubated at 27 °C for days shaking 273 rpm. Gas chromatography analyses revealed that growing Sphingomonas subarctica T7b cells desulfurized converted 88.29% DBT 2-hydroxybiphenyl metabolite while 86.40\% 7.00%, respectively. Furthermore, had desulfurization percentage 84.40%, 41.00%, 6.66%, respectively, after five incubation. were observed desulfurize slightly better single compared when mixed other compounds.