分离的gordonia sp. itr100对苯并噻吩的脱硫

Varish Ahmad, Abrar Ahmad, M. I. Khan, O. Baothman, M. J. Khan
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引用次数: 2

摘要

不同的顽固性脂肪族和芳香族硫化合物,如二苯并噻吩、苯并噻吩和二甲基二苯并噻吩等,即使经过加氢脱硫(一种去除硫杂质的化学方法),仍残留在汽油和柴油中。这些含硫杂质在作为燃料运输之前必须除去。在过去的十年中,许多微生物被报道在环境温度下通过各种途径,特别是4S途径,显示出去除硫杂质的潜力。在这项研究中,我们描述了Gordonia sp. IITR100使用微生物细胞培养和分析技术,如分光光度法和使用柱5的气相色谱-质谱分光光度法对模型化合物苯并噻吩的脱硫。Gordonia sp. IITR100既能在苯并噻吩上生长,也能在二苯并噻吩上生长。气相色谱-质谱分析显示,苯并噻吩被代谢为o-羟基苯乙烯作为最终产物,类似于“4S”途径。Gordonia sp. IITR100已被证明与重有机硫化合物如噻吩和苯并噻吩分别脱硫为邻羟基苯基苯基砜和2-苯基萘-1-醇。Gordonia sp. IITR100已显示出对重质硫和钙化硫化合物的脱硫潜力,这表明它有潜力(广泛的底物范围)用于石油中各种坚硬的有机硫馏分。因此,该菌株可用于生物脱硫的商业目的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A DESULFURIZATION OF BENZOTHIOPHENE BY AN ISOLATED GORDONIA SP. IITR100
Different recalcitrant aliphatic and aromatic sulfur compounds e.g. Dibenzothiophene, Benzothiophene, and Di-methyl Dibenzothiophene etc. have been remaining in the petrol and diesel, even after hydrodesulfurization, a chemical method of sulfur impurities removal. These sulfur impurities are required to be removed before it is being transported as fuel. So many microbes have been reported in the last decade showing potential for removing the sulfur impurities by using various pathways at ambient temperature, especially 4S pathways. In this study, we describe desulfurization of a model compound Benzothiophene by a Gordonia sp. IITR100 using microbial cell culture and analytical techniques e.g. spectrophotometry and gas chromatography-mass spectrophotometry using column-5. Gordonia sp. IITR100 can grow on Benzothiophene as well as Dibenzothiophene us shown by spectrophotometrical analysis as evident by increased turbidity in aqueous culture. Benzothiophene was metabolized to o-hydroxystyrene as the final product analogous to ‘4S’ pathway as Gas Chromatography-Mass Spectra analysis revealed. Gordonia sp. IITR100 have already been shown desulfurization with heavy organosulfur compounds like Thianthrene, and Benzonahpthothiophene to o-hydroxyphenyl phenylsulfone and 2-phenyl-naphthalene-1-ol respectively. The Gordonia sp. IITR100 have shown potential for Desulfurization of heavy and calcitarant sulfur-compounds suggests its potential (broad substrates range) for use in various tough organosulfur fractions in petroleum. Thus, this bacterial strain could be utilized   for commercial purpose of biodesulfurization.
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