Crude Oils and their Fate in the Environment

Hedgpeth, Bryan M.; McFarlin, Kelly M.; Prince, Roger C.

doi:10.1201/9780367456252-5

Cited by 3 publications

(2 citation statements)

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“…Petroleum hydrocarbons, mixtures of organic compounds with carbon and hydrogen in their composition, are derived from the decomposition of earlier living organisms, buried deep under the crust of the planet for millions of years (Hedgpeth, B. M., et al, 2021). These hydrocarbon compounds cover an extensive range of compounds with different chemical structures and molecular weight ranges, like alkanes, aromatics, and cyclic hydrocarbons (Abutaqiya, M. I., et al, 2021).…”

Section: Composition and Sources Of Petroleum Hydrocarbonsmentioning

confidence: 99%

Petroleum Hydrocarbons Biodegradation Uncovering the Variety and Capabilities of Oil-Oxidizing Microbes

Hassand,

Omirbekova,

Baseer

et al. 2024

ejtas

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The biodegradation of petroleum hydrocarbons is a valuable process used to reduce the ecological influences of oil spills and pollution. This comprehensive review immerses readers in the sophisticated universe of oil-oxidizing organisms, the diversity and functionality of which are unveiled. By examining different bacterial groups, such as aerobic and anaerobic bacteria, fungi, archaea, and algae, the study shows enzymatic and metabolic processes exploited during biodegradation. Environmental factors, substrate characteristics, and microbial interactions are the main determinants that contribute to the good performance of the biodegradation of petroleum hydrocarbons. The effectiveness of various biotechnological strategies like in-situ and ex-situ bioremediation, bioaugmentation, and bio stimulation is being tested to determine their ability to embrace the microbial capabilities for environmental restoration.

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Section: Composition and Sources Of Petroleum Hydrocarbonsmentioning

confidence: 99%

Petroleum Hydrocarbons Biodegradation Uncovering the Variety and Capabilities of Oil-Oxidizing Microbes

Hassand,

Omirbekova,

Baseer

et al. 2024

ejtas

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“…The main components of crude oil are hydrocarbons. In addition to 10% of compounds containing heteroatoms like sulfur, oxygen, and Nitrogen [14]. Monocyclic aromatic hydrocarbons, which are small, explosive, and volatile, to large, non-volatile, are all included in the mixture of hydrocarbons.…”

Section: Crude Oil's Composition and Toxic Effectsmentioning

confidence: 99%

The Impacts of Petroleum on Environment

Al-Rubaye¹,

Jasim²,

Ameen³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Petroleum is a mixture of many different hydrocarbon compounds, most of which primarily contain carbon and hydrogen in varying proportions. Monocyclic aromatic hydrocarbons, which are small, explosive, and volatile, to large, non-volatile, are all included in the mixture of hydrocarbons. Toxicological effects of a hydrocarbon depend on its molecular weight, family of hydrocarbons, creature exposed to it, and life-cycle stage of the exposed organism. Studies have shown that exposure to the toxic chemicals in crude oil, such as para-phenol compounds and volatile benzene, might have an adverse effect on human health. Furthermore, when there is an oil spill at sea, the wind and water currents disperse the oil, causing a thin slick to migrate across the ocean’s surface. There are numerous simultaneous chemical and physical changes. Reviewing the long-term effects of petroleum on the environment is the aim of this paper in terms of the impact on human health, plants, and marine life.

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Characterization and identification of long-chain hydrocarbon-degrading bacterial communities in long-term chronically polluted soil in Ogoniland: an integrated approach using culture-dependent and independent methods

Okoye,

Selvarajan,

Chikere

et al. 2024

Environ Sci Pollut Res

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Escalating oil consumption has resulted in an increase in accidental spills of petroleum hydrocarbons, causing severe environmental degradation, notably in vulnerable regions like the Niger Delta. Complex mixture of these hydrocarbons particularly long-chain alkanes presents unique challenges in restoration of polluted environment due to their chemical properties. This study aimed to investigate the long-chain hydrocarbon-degrading bacterial communities within long-term chronically polluted soil in Ogoniland, by utilizing both traditional cultivation methods and modern culture-independent techniques. Results revealed that surface-polluted soil (SPS) and subsurface soil (SPSS) exhibit significantly higher total organic carbon (TOC) ranging from 5.64 to 5.06% and total petroleum hydrocarbons (TPH) levels ranging from 36,775 ppm to 14,087 ppm, compared to unpolluted soil (UPS) with 1.97% TOC and 479 ppm TPH, respectively. Analysis of carbon chain lengths reveals the prevalence of longer-chain alkanes (C20-28) in the surface soil. Culture-dependent methods, utilizing crude oil enrichment (COE) and paraffin wax enrichment (PWE), yield 47 bacterial isolates subjected to a long-chain alkane degradation assay. Twelve bacterial strains demonstrate significant degradation abilities across all enriched media. Three bacterial members, namely Pseudomonas sp. (almA), Marinomonas sp. (almA), and Alteromonas (ladA), exhibit genes responsible for long-chain alkane degradation, demonstrating efficiency between 50 and 80%. Culture-independent analysis reveals that surface SPS samples exhibit greater species richness and diversity compared to subsurface SPSS samples. Proteobacteria dominates as the phylum in both soil sample types, ranging from 22.23 to 82.61%, with Firmicutes (0.2–2.22%), Actinobacteria (0.4–3.02%), and Acidobacteria (0.1–3.53%) also prevalent. Bacterial profiles at genus level revealed that distinct variations among bacterial populations between SPS and SPSS samples comprising number of hydrocarbon degraders and the functional predictions also highlight the presence of potential catabolic genes (nahAa, adh2, and cpnA) in the polluted soil. However, culture-dependent analysis only captured a few of the dominant members found in culture-independent analysis, implying that more specialized media or environments are needed to isolate more bacterial members. The findings from this study contribute valuable information to ecological and biotechnological aspects, aiding in the development of more effective bioremediation applications for restoring oil-contaminated environments.

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Crude Oils and their Fate in the Environment

Cited by 3 publications

References 1 publication

Petroleum Hydrocarbons Biodegradation Uncovering the Variety and Capabilities of Oil-Oxidizing Microbes

Petroleum Hydrocarbons Biodegradation Uncovering the Variety and Capabilities of Oil-Oxidizing Microbes

The Impacts of Petroleum on Environment

Characterization and identification of long-chain hydrocarbon-degrading bacterial communities in long-term chronically polluted soil in Ogoniland: an integrated approach using culture-dependent and independent methods

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