Bioremediation of Petroleum Sludge

Battikhi, Mohammed Nizar

doi:10.15406/jmen.2014.01.00011

Cited by 6 publications

(23 citation statements)

References 13 publications

(13 reference statements)

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“…Large quantities of organic and inorganic compounds are released into the environments every year as results of anthropogenic activities thereby causing serious environmental problems [8]. The result of this study reveals Azotobacter vinelandii possesses the ability to breakdown crude oil in the soil (Figure 1).…”

Section: Resultsmentioning

confidence: 85%

Variation in the Carbon (C), Phosphorus (P) and Nitrogen (N) Utilization during the Biodegradation of Crude Oil in Soil

A¹,

S²,

Ine³

2015

J Pet Environ Biotechnol

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This study was aimed at determining the effect of varying concentration of crude oil pollution on the macronutrients in the soil. Various macro-nutrients (such as soil ammonium concentration, soil nitrate concentration, and available phosphorus), oxidizable organic carbon, and total petroleum hydrocarbon were determined. The result revealed that as the time increases, the oxidizable carbon, which is also a function of the organic matter decreases, which is as a result of the conversion of carbon to carbon (IV) oxide during cellular metabolism. This decrease showed that there was an increase in the activity of that leads to the breakdown of the carbon components in the soil. The soil phosphate concentration determination did not show any pattern in their increase or decrease, which shows that increase in crude oil concentration, did not significantly affect the phosphate concentration in the soil. The soil ammonium concentration increased from 24 th hour to 168 th hour but decreased before the end of the experiment. This increase could be attributed to ability of the Azotobacter vinelandii to fixed nitrogen as an innate responsibility, while Pseudomonas sp. which is known to contain nitrogen fixing genes. The result also showed that there is a constant increase in soil nitrate concentration which is affected as the concentration of the pollutant (crude oil) increases. This study has shown that the consortium of these organisms can be used as a bio-fertilizer as well as in bioremediation.

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Section: Resultsmentioning

confidence: 85%

Variation in the Carbon (C), Phosphorus (P) and Nitrogen (N) Utilization during the Biodegradation of Crude Oil in Soil

A¹,

S²,

Ine³

2015

J Pet Environ Biotechnol

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“…It has been shown that the capacity of the microorganisms to degrade pollutants is not a result of just adding any type of species to polluted ecological sites, but the capacity of individual strains to produce appropriate biosurfactants and form a strong biodegrading association, and their ability to survive in the soil under natural conditions and with limited available nutrients and water [7,8]. However, the extreme weather in certain regions leads over prolonged periods of time to the selection of adapted microorganisms to harsh conditions, but also to acquire new potentialities to remediate special composition of organics from soil or water [6,9]. We consider that bioprocesses of natural remediation in Qatar, an Arabian Gulf Country, is a suitable model to study hydrocarbons-degrading bacteria and how they deal with high variable composition and structure of hydrocarbons, especially under the extreme environmental conditions, and dry soils in Qatar [10].…”

Section: Introductionmentioning

confidence: 99%

Isolation, Screening and Activity of Hydrocarbon-Degrading Bacteria from Harsh Soils

Disi¹,

Jaoua²,

Al-Thani³

et al. 2016

World Congress on Civil, Structural, and Environmental Engineering

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The study of microbial communities in relation to their ecology, interaction, and genetics must be covered in Qatar with special soil, weather and water. Microorganisms of an environment never having been exposed to such factors do not have necessarily the ability to resist. However, when exposed to such factors, they are often able to adapt, that is to say the potential to acquire metabolic potentialities by recruitment vertical or horizontal specific genes, or recruitment of metabolic pathways present in the genome but not expressed. In polluted environments with oil hydrocarbons, the phenomena of horizontal/vertical transfers, mutations and adaptation to environmental stressors increase the metabolic capabilities of bacteria, including expanding their range of substrates, and allow their adaptation to new substrates. Extensive research on such fields is often focusing on genetic studies, meaning that the genes pools and expression as well as species occurrence are considered as basis. However, from the biotechnological point of view, the cell is considered, as an analogy, as factory. All its components (physical structure and the functions of the organelles and metabolic activities) are strictly regulated by regulatory machineries strictly controlled by the microenvironment. This approach will help answer the question on the different microbial communities that are available in Qatar soil and how they are unique in some biological activities. Indeed, the focus of our research is to characterize and demonstrate the diversity of biological activities within bacterial communities and strains of the same species. Here, we consider the bacterial activities related to polluting oil hydrocarbondegrading communities, including those which are biosurfactant-producers, Here, we showed that the isolation and screening strategy affected a lot, the selection of the hydrocarbon-degrading bacteria, by combining the bacterial tolerance to hydrocarbon toxicity to the hydrocarbons degradative activities. We demonstrated that several Qatari isolates are able to shift their activity from a range of hydrocarbons to another by the effect of the nitrogen source, C/N ratio and organic nitrogen source. By application of Factorial Investigation of Strains' Potentiality to Degrade Hydrocarbons, which is original in the attempt to integrate the study of the most essential nutritional elements as well as their interactions in one experimental frame, we demonstrated diversity of nutritional requirements among the same bacterial group of Pseudomonas aeruginosa strain, isolated in Qatar. Strains' response to altered growth conditions varied substantially; although they were from the same taxonomical group.

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“…Previous studies shown that water and soil contaminated directly or indirectly by hydrocarbons due to improper oil dispense which create serious environmental problems. 1,2 Hydrocarbons are the main oil constituent release by industrial and domestic sources, which considered the most serious hazardous problem. Accumulation of dispensed oil and oil derivatives released and separated in oil Refinery and from storage tanks create huge environmental hazard.…”

Section: Introductionmentioning

confidence: 99%

“…Accumulation of dispensed oil and oil derivatives released and separated in oil Refinery and from storage tanks create huge environmental hazard. [1][2][3][4] Therefore controlled and monitoring system was adapted to prevent the release of hydrocarbon in the ecosystem and classified it as human health hazard. 5 Oil sludge derivatives are carcinogenic and should be treated probably before disposing into the ecosystem.…”

Section: Introductionmentioning

confidence: 99%

“…11 Enhancing activity of the indigenous microbes by addition suitable nutrients was reported to enhance bioremediation in oily sludge contaminated soil. 2,6,7 It had been reported the use of indigenous microbes to accelerate hydrocarbon degradation rate and hens become a major method for restoration of oil polluted environment 1,2,12 where, hydrocarbon contaminants were metabolized by groups of Heterotrophic bacteria and fungi 13 this technique known as bioremediation. 1,14 However, bioremediation still considered complex process with multiple requirements such as isolation of the degrading microorganisms and investigation of manure type to achieve better degrading rate within oil sludge.…”

Section: Introductionmentioning

confidence: 99%

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