Investigation of Biosurfactant Activity and Asphaltene Biodegradation by Bacillus cereus

Asadollahi, Leila; Salehizadeh, Hossein; Yan, Ning

doi:10.1007/s10924-016-0754-y

Cited by 15 publications

(8 citation statements)

References 43 publications

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“…The results shown that Bacillus cereus was able to degrade 40% of asphaltenes as a sole carbon and energy source after 60 days at 28 °C. 32 Recently, it was reported that Daedaleopsis sp, isolated from wood-degrading fungi, can degrade asphaltene fraction and dibenzofuran, and in comparison with available studies, this strain could consume more asphaltenes and 88.7% asphaltene biodegradation in crude oil could be attached by this microorganism after 14 days of incubation at 40 °C and pH = 5. 33 The asphaltene precipitation phenomenon in the oil equipment is a serious challenge in the production facilities in the Iranian southwest oilfields, 34,35 and the previous reports showed that there is not a comprehensive study on the possibility of biodegradation of precipitated asphaltenes that considers all culture medium parameters in operational condition and isolated indigenous bacteria from available oilcontaminated samples.…”

Section: Introductionmentioning

confidence: 88%

“…and Lysinibacillus fusiformis have the best ability to degrade asphaltene, and a percentage of their asphaltene biodegradation were 50% and 55% with growth rate of 7.17 × 107 CFU/mL days and 4.21 × 107 CFU/mL days, respectively. 31 Moreover, Asadollahi et al, 32 identified Bacillus cereus in the oil-contaminated soils and oily sludge samples collected from oil storage tanks at the Kermanshah Oil Refinery Company as a biosurfactant-producing bacterium with capability of asphaltenes degradation. The results shown that Bacillus cereus was able to degrade 40% of asphaltenes as a sole carbon and energy source after 60 days at 28 °C.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, Asadollahi et al, identified Bacillus cereus in the oil-contaminated soils and oily sludge samples collected from oil storage tanks at the Kermanshah Oil Refinery Company as a biosurfactant-producing bacterium with capability of asphaltenes degradation. The results shown that Bacillus cereus was able to degrade 40% of asphaltenes as a sole carbon and energy source after 60 days at 28 °C …”

Section: Introductionmentioning

confidence: 99%

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Experimental and Modeling Study on Precipitated Asphaltene Biodegradation Process Using Isolated Indigenous Bacteria

Shahebrahimi

Fazlali

Motamedi

et al. 2018

Ind. Eng. Chem. Res.

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Removing the precipitated asphaltenes from the facilities of oil industry is of vital importance. In this study, the possibility of the precipitated asphaltene biodegradation from a crude oil sample using indigenous bacterial species isolated from different oil-contaminated samples of a Middle East oilfield has been investigated. On the basis of the achieved designed experiments results using response surface methodology, identified bacteria were cultured in the flasks on pure and consortium. Three levels of temperatures, salinity, pH, and initial asphaltene concentration were considered as growth medium parameters, and the flasks were incubated for 60 days. The CHNS and FT-IR analysis have been performed to evaluate the asphaltene elemental and structural alteration after the biodegradation process. The validity of some kinetic models to predict the behavior of the microbial systems was studied. The maximum asphaltene biodegradation was 41.95% and carbon, hydrogen, and nitrogen content of treated samples decreased significantly during the bacterial activity.

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Section: Introductionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental and Modeling Study on Precipitated Asphaltene Biodegradation Process Using Isolated Indigenous Bacteria

Shahebrahimi

Fazlali

Motamedi

et al. 2018

Ind. Eng. Chem. Res.

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“…For biosurfactant extraction, the pH of the cell-free broth was adjusted to 2 using 11.5 N HCl solution and was stored overnight at 4°C. Surfactant was extracted by using a solution of chloroform and methanol in the ratio 2:1 [ 38 , 39 ]. Chloroform-methanol mixture was added to cell-free broth in equal volume and mixed vigorously for 10 min.…”

Section: Methodsmentioning

confidence: 99%

Isolation and chemical characterization of the biosurfactant produced by Gordonia sp. IITR100

et al. 2022

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Biosurfactants are amphipathic molecules produced from microorganisms. There are relatively few species known where the detailed chemical characterization of biosurfactant has been reported. Here, we report isolation and chemical characterization of the biosurfactant produced by a biodesulfurizing bacterium Gordonia sp. IITR100. Biosurfactant production was determined by performing oil spreading, drop-collapse, Emulsion index (E24), and Bacterial adhesion to hydrocarbons (BATH) assay. The biosurfactant was identified as a glycolipid by LCMS and GCMS analysis. The chemical structure was further confirmed by performing FTIR and NMR of the extracted biosurfactant. The emulsion formed by the biosurfactant was found to be stable between temperatures of 4°C to 30°C, pH of 6 to 10 and salt concentrations up to 2%. It was successful in reducing the surface tension of the aqueous media from 61.06 mN/m to 36.82 mN/m. The biosurfactant produced can be used in petroleum, detergents, soaps, the food and beverage industry and the healthcare industry.

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“…Indeed, after enrichment of contaminated soil in the presence of asphaltenes, a strain of Bacillus cereus that produced biosurfactants and grew in the presence of asphaltenes as sole source of carbon was isolated. Further investigation showed that this strain could degrade up to 40% of 5.0 g.L −1 asphaltenes in 60 days (Asadollahi et al, 2016;ST22).…”

Section: Asphaltene or Resin Degradation Using Asphaltenes As The Carbon Sourcementioning

confidence: 98%

Current Knowledge and Future Challenges on Bacterial Degradation of the Highly Complex Petroleum Products Asphaltenes and Resins

Nzila

Musa

2021

Front. Environ. Sci.

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Petroleum products consist mainly of aliphatics, aromatics, asphaltenes and resins. After oil exploitation, the concentrations of asphaltenes and resins are high in oil reservoirs; however, they are also the petroleum pollutants most recalcitrant to degradation, leading to high oil viscosity. A sizable amount of work has been dedicated to understand the degradation mechanisms of aliphatics and aromatics; however, in comparison, little work has been carried out on asphaltene and resin degradation. This review discusses our current knowledge on the understanding of asphaltene and resin degradation. More specifically, it sheds light on work carried out to date on the degradation of these pollutants, and highlights the major gaps that limit our understanding of their degradation pathways. It also presents new potential research areas that can be explored to fill in these gaps.

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Investigation of Biosurfactant Activity and Asphaltene Biodegradation by Bacillus cereus

Cited by 15 publications

References 43 publications

Experimental and Modeling Study on Precipitated Asphaltene Biodegradation Process Using Isolated Indigenous Bacteria

Experimental and Modeling Study on Precipitated Asphaltene Biodegradation Process Using Isolated Indigenous Bacteria

Isolation and chemical characterization of the biosurfactant produced by Gordonia sp. IITR100

Current Knowledge and Future Challenges on Bacterial Degradation of the Highly Complex Petroleum Products Asphaltenes and Resins

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