Biodesulfurization potential of a newly isolated bacterium, Gordonia alkanivorans RIPI90A

Mohebali, Ghasemali; Ball, Andrew S.; Rasekh, Behnam; Kaytash, Ashk

doi:10.1016/j.enzmictec.2006.05.012

Cited by 83 publications

(63 citation statements)

References 30 publications

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“…BDS is based on 4S pathway. When the pathway is used, DBT is not degraded, but it is transformed into 2-HBP which partitions in the oil phase, resulting in no loss of caloric value of the fuel [10]. DBT-containing hydrocarbon was desulfurized by growing cells of Pseudomonas sp.…”

Section: Discussionmentioning

confidence: 99%

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Desulfurization of Dibenzothiophene by Pseudomonas fluorescens (UCP 1514) Leading to the Production of Biphenyl

Silva¹,

Schwartz²,

Souza³

et al. 2018

Recent Insights in Petroleum Science and Engineering

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Dibenzothiophene (DBT) is a typical recalcitrant thiophenic sulfur component of fuels, and its desulphurization has been a model reaction in the treatment of these compounds. Based on this information, the potential of Pseudomonas fluorescens (UCP 1514) on the desulfurization of dibenzothiphene was studied, in order to use it for reducing the sulfur content of diesel oil in compliance with environmental regulations. The result of biodegradation by the bacteria was determined by undertaking high-performance liquid chromatography of the metabolites produced. These can also be identified by gas chromatography with a mass spectrometry detector, and doing so revealed a sulfur-free product, biphenyl, as the final product of the degradation process. The results showed a decrease of 73% in dibenzothiophene content, which means that P. fluorescens removes sulfur from dibenzothiophene with a good selectivity to form biphenyl. These promising results indicate that P. fluorescens has an interesting potential to degrade sulfur-containing compounds in diesel oil and thereby could help in removing sulfur content from diesel oil. The process of microbial desulfurization described herein can be used particularly after carrying out hydrodesulfurization. Consequently, the sulfur content could be reduced even further. Applying P. fluorescens UCP 1514 in dibenzothiophene could help to understand the nature of the biodegradation process and to achieve the regulatory standards for sulfur level in fossil fuels.

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Section: Discussionmentioning

confidence: 99%

“…In this pathway, the carbon skeleton of DBT is released intact under the formation of 2-HBP; therefore, its calorific value is not lost [10].…”

Section: Introductionmentioning

confidence: 99%

Desulfurization of Dibenzothiophene by Pseudomonas fluorescens (UCP 1514) Leading to the Production of Biphenyl

Silva¹,

Schwartz²,

Souza³

et al. 2018

Recent Insights in Petroleum Science and Engineering

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show abstract

“…The result showed that about 60% of DBT was transformed into dibenzothiophene sulfoxide (12%) and 46% dibenzothiophene sulfone at an optimum temperature, DBT concentration, molar ratio (DBT:H 2 O 2 ), and reaction time of 45 • C, 0.267 Mm, 1:20, and 60 min, respectively. Mohebali et al conducted a BDS study on the removal of DBT from model oil, using both growth and resting stages of Gordonia lkanivorans (RIPI90A) bacterium, newly isolated [124]. The result showed that cells that were harvested at the late exponential stage had higher DBT desulfurizing capacities.…”

Section: Recent Studies In Bdsmentioning

confidence: 99%

“…There was almost a 99% decrease in total sulfur level of DBT at 40 • C in 24 h. About 59% of total sulphur was removed from Liaoning crude oil after 72 h treatment. Various studies of % sulphur removal from petroleum distillates by BDS techniques are summarized in Table 2 and Figure 2, at optimum temperatures and DBT concentrations using different microorganisms [124][125][126][127][128][129][130][131][132][133][134][135][136][137][138][139]. The microorganisms are abbreviated as follow; Gordonia alkanivorans RIPI90A (GAR 190A), Gordonia alkanivorans strain 1B (GAS 1B), Rhodococcus erythropolis IGTS8 (RE IGTS8 …”

Section: Recent Studies In Bdsmentioning

confidence: 99%

Biodesulfurization of Petroleum Distillates—Current Status, Opportunities and Future Challenges

2017

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Sulfur oxide (SO 2 ) and hydrogen sulfide (H 2 S) are considered as one of the major air pollutants in the world today. In addition, high sulfur levels in petroleum distillates can promote the deactivation of catalysts through poisoning in fluidized catalytic cracking (FCC) during hydrocracking of the heavy distillates to lighter ones. The presence of high sulfur-containing compounds in the process streams could cause corrosion of piping and fittings and equipment, thereby damaging the pipelines and leading to air emissions of sulfur-containing compounds, which are undesirable for mankind and his environment. In many cases, a large quantity of SO x is released into the atmosphere when petroleum distillates that contain substantial amount of sulphur-containing compounds are used as fuel and combust. In this article, a short overview of different desulfurization methods that are employed to remove sulfur from petroleum distillates is provided. In particular, the review concentrates on biodesulfurization technique. In addition, this article intends to provide its readers current status of biodesulfurization (BDS). It critically analyses the trend in the development of the technology to showcase its strength and weakness that could pave a way for future opportunities. Approaches that are suitable to remediate sulfur-contaminated environment are discussed as well. Lastly, speculations on future directions or opportunities that require exploration are provided as a way of provoking the thoughts of researchers in this field.

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“…For this reason, biodesulfurization of crude oil and its fractions has been studied extensively (Kilbane 2006;Mohebali and Ball, 2008;Xu et al, 2009). Fuel desulfurization represented an opportunity for a cost effective solution to acid rain and other health hazard caused by sulfurous emission (Rhee et al, 1998;Mohebali et al, 2007). According to those mentioned above, the aim of the present work was to obtain potential biocatalists (bacterial isolates) for desulfuring of dibenzothiophene (DBT).…”

Section: Introductionmentioning

confidence: 99%

Isolation and Identification of Dibenzothiophene Biodesulfurizing Bacteria

Al-Jailawi¹

2015

BIO

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Abstract:This study aimed to obtain efficient bacteria capable of desulfurizing dibenzothiophene (DBT). For this purpose forty oil contaminated soil samples were collected from different sites in Iraq. It was found that three isolates (M9, M19 and S25) had the ability to desulfurize DBT (cleave C-S bond) and converted it to 2-hydroxybiphenel (2-HBP) or other phenolic end products. This suggests the involvement of the 4S pathway in the desulfurizing of DBT via a specific cleavage of only the C-S bond by these isolates. These isolates were identified as Pseudomonas aeruginosa. The result also showed that P. aeruginosa S25 was the most efficient one for removing sulfur from DBT. The GC/MS analysis for DBT after growth of P. aeruginosa S25, indicated that 12.89 % of DBT was consumed (consumption of sulfur), and the product (2-HBP) was further converted to 2-MBP (addition of a methyl group) and this could be a novel pathway for consuming DBT.

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Biodesulfurization potential of a newly isolated bacterium, Gordonia alkanivorans RIPI90A

Cited by 83 publications

References 30 publications

Desulfurization of Dibenzothiophene by Pseudomonas fluorescens (UCP 1514) Leading to the Production of Biphenyl

Desulfurization of Dibenzothiophene by Pseudomonas fluorescens (UCP 1514) Leading to the Production of Biphenyl

Biodesulfurization of Petroleum Distillates—Current Status, Opportunities and Future Challenges

Isolation and Identification of Dibenzothiophene Biodesulfurizing Bacteria

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