Biodesulfurization of dibenzothiophene by a newly isolated Rhodococcus erythropolis strain

Davoodi-Dehaghani, Fatemeh; Vosoughi, M; Ziaee, Abed-Ali

doi:10.1016/j.biortech.2009.08.058

Cited by 149 publications

(71 citation statements)

References 18 publications

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“…Therefore, searching an effective way for deep desulfurization without breaking sulfurcontaining molecules in fuels is urgently needed [2,3]. Traditional ways for desulfurization include hydrodesulfurization, oxidative desulfurization [4], adsorptive desulfurization [5][6][7], extractive desulfurization [8], and biodesulfurization [9,10]. These ways can hardly decrease sulfur content to the ever-stringent emission standard or they will destroy the sulfur-containing compounds that should have been retained and effectively utilized.…”

Section: Introductionmentioning

confidence: 98%

Functional monomer screening and preparation of dibenzothiophene-imprinted polymers on the surface of carbon microsphere

et al. 2014

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Three candidate monomers (methacrylic acid, 2-vinyl pyridine, and 2-acrylamide-2-methyl sulfuric acid) were screened through computational simulation method to prepare effective surface molecularly imprinted polymers (SMIPs) based on carbon microspheres (CMSs) for dibenzothiophene removal from fuels. The optimized structures of complexes were described using density functional theory calculation at B3LYP/6-311??G(d,p) level and frequency calculations for each molecule and complex were conducted to provide insights into electrostatic interaction between monomers and template DBT. Besides, the reliability of computational simulation method for screening was tested by comparing the theoretical data with experimental results from gas chromatography. The computational data suggest that methacrylic acid (MAA) was the preferred monomer with the largest absolute binding energy (14.79 kJ mol -1 ), which is in accordance with the experimental results. Thesaturated adsorption of PMAA-SMIPs/CMSs was the best (41.73 mg g -1 ). Besides, PMAA-SMIPs/CMSs show highest special selectivity for dibenzothiophene against benzothiophene, and the relative selectivity coefficient k 0 was 2.02. The computational simulation method can be effectively used in monomer screening. This work may help understand the mechanisms of polymerization and recognition process between SMIPs and template and design SMIPs with improved adsorption performance.

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Section: Introductionmentioning

confidence: 98%

Functional monomer screening and preparation of dibenzothiophene-imprinted polymers on the surface of carbon microsphere

et al. 2014

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“…In addition, HDS is difficult to remove heterocyclic organosulfur such as benzothiophene (BT), dibenzothiophene (DBT) and their derivatives. Due to these reasons, many groups [7][8][9][10] have been engaged in the exploitation of non-HDS technologies for transportation fuels, including extraction [11][12] , oxidation [13][14] , adsorption [15][16] , biological desulfurization [17][18] and others [19][20] .…”

Section: Introductionmentioning

confidence: 99%

Green Carboxylic Acid-Based Deep Eutectic Solvents as Solvents for Extractive Desulfurization

et al. 2016

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The extractive desulfurization of thiophene (TS), dibenzothiophene (DBT), and benzothiophene (BT) in model oil was carried out using carboxylic acid-based deep eutectic solvents (DES). It was found that DES formed by formic acid as hydrogen bond donor and Tetrabutylammonium bromide (TBAB) as hydrogen bond acceptor could efficiently separate organosulfur from oils. The influence parameters in this process were discussed, such as extraction temperature, reaction time, mass ratio of DES to oil; multistage extraction effect; recycle times and regeneration of DES. The results showed that the desulfurization selectivity of TBAB/HCOOH followed the order TS < BT ≈DBT. Under the Optimized conditions, the sulfur removal of BT, DBT and TS were 81.75%, 80.47% and 72% in a single stage, respectively, and after three cycles, it will rise to 98.32%, 98.24% and 97.6%. The sulfur content in fuels can be achieved to less than 8.4, 8.8 and 12 ppm for BT, DBT and TS. In addition, by mechanism discussion, it was proved that hydrogen bonding between the sulfide and DES was the main driving force of the extraction desulfurization process.

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“…Here, the isolated Rhodococcuc erythropolis D-1 has been shown to selectively remove sulfur by oxidizing dibenzothiophene (Ohshiro et al, 1994). A similar study reported that the R. erythropolis H-2 was capable of attacking the sulfur atoms in 3,4-benzo DBT, 2,8-dimethy DBT, and 4,6-dimethyl DBT (Ohshiro et al, 1996), while the Rhodococcus erythropolis SHT87 completely desulfurized DBT (Davoodi-Dehaghani et al, 2010). Also, other species have been reported, such as the isolated Arthrobacter species, which can desulfurize model compounds like 4,6-diethyldibenzothiophene, yielding 2-hydroxy-3,3'-diethylbiphenyl, and liberated sulfur as the salfite (Lee, Senius, & Grossman, 1995).…”

Section: Model Compounds For Biodesulfurization Systemsmentioning

confidence: 88%

Biodesulfurization of Sour Crude Oil

Alkhalili¹,

Yahya²,

Abrahim³

et al. 2017

MAS

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Crude oil is one of the most important types of fossil fuel in the world. It is an economically important commodity that is massively used in many industrial activities. The poor quality of crude oil is related to high sulfur content, which translates to lower profit margins and negatively impacts air quality standards. Polyaromatic sulfur heterocycles (PASHs) that exist in crude oil requires an efficient reduction method to achieve significant desulfurization levels. Recently, biodesulfurization (BDS) is gaining greater attention attributed to its environmentally benign bioprocess; possible benefits of BDS include lower capital and processing costs. Studies have reported that BDS is urgently needed for desulfurization of recalcitrant organic sulfur relative to traditional approach, hydrodesulfurization (HDS). The establishment of commercial scale biorefining technology relies on major advancement with respect to less expensive and sufficient production of highly active and stable biocatalysts that can be adapted to intense conditions encountered in petroleum refineries. In this paper, a review on BDS processes for removing recalcitrant thoiphenic components from sour crude oil is conducted, covering the aim of most studies concerning desulfurizing bacteria, which enables a deep desulfurization of organosulfur compounds by 4S pathway, maintaining the caloric value of fuel.

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Biodesulfurization of dibenzothiophene by a newly isolated Rhodococcus erythropolis strain

Cited by 149 publications

References 18 publications

Functional monomer screening and preparation of dibenzothiophene-imprinted polymers on the surface of carbon microsphere

Functional monomer screening and preparation of dibenzothiophene-imprinted polymers on the surface of carbon microsphere

Green Carboxylic Acid-Based Deep Eutectic Solvents as Solvents for Extractive Desulfurization

Biodesulfurization of Sour Crude Oil

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