Sulfur-selective desulfurization of dibenzothiophene and diesel oil by newly isolated Rhodococcus sp strains

被引：42

作者：

Castorena, G ^{[1
]}

Suárez, C ^{[1
]}

Valdez, I ^{[1
]}

Amador, G ^{[1
]}

Fernández, L ^{[1
]}

Le Borgne, S ^{[1
]}

机构：

[1] Inst Mexicano Petr, Programa Invest & Desarrollo Biotecnol Petr, Mexico City 07730, DF, Mexico

来源：

FEMS MICROBIOLOGY LETTERS | 2002年 / 215卷 / 01期

关键词：

biodesulfurization; dibenzothiophene; 4,6-dimethyldibenzothiophene; diesel oil; Rhodococcus;

D O I：

10.1111/j.1574-6968.2002.tb11385.x

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

New desulfurizing bacteria able to convert dibenzothiophene into 2-hydroxybiphenyl and sulfate were isolated from contaminated soils collected in Mexican refineries. Random amplified polymorphic DNA analysis showed they were different from previously reported Rhodococcus erythropolis desulfurizing strains. According to 16S rRNA gene sequencing and fatty acid analyses, these new isolates belonged to the genus Rhodococcus. These strains could desulfurize 4,6-dimethyldibenzothiophene which is one of the most difficult dibenzothiophene derivatives to remove by hydrodesulfurization. A deeply hydrodesulfurized diesel oil containing significant amounts of 4,6-dimethyidibenzothiophene was treated with Rhodococcus sp. IMP-S02 cells. Up to 60% of the total sulfur was removed and all the 4,6-dimethyldibenzothiophene disappeared as a result of this treatment. (C) 2002 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.

引用

页码：157 / 161

页数：5

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