Microbial Degradation of Petroleum Hydrocarbons: Realities, Challenges and Prospects

Unimke, A. A.; Mmuoegbulam, O. A.; Anika, Ogemdi Chinwendu

doi:10.9734/bji/2018/43957

Cited by 17 publications

(5 citation statements)

References 20 publications

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“…Unlike the total heterotrophic bacteria counts, the total fungal counts were significantly (p<0.05) low compared to total fungi. The high levels of microbial counts observed in the estuary were as a result of the massive petroleum and other related activities in the area under study resulting in an enriched microbial population surviving toxic contamination [13].…”

Section: Resultsmentioning

confidence: 97%

Iko River Estuary: Anthropogenic impacts and the microbial community alterations

Unimke

Ibiene

Okerentugba

2020

GSC Biol. and Pharm. Sci.

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The contamination of the aquatic systems with heavy metals has been on the increase since the last century due to industrial activities and this has contributed greatly to the variations in the microbial community structure and function in the ecosystem. The natural and anthropogenic variations in microbiological and heavy metals analysis in Iko River estuary was analyzed using standard methods. From the result, it was observes that anthropogenic variations influence greatly the microbial proliferation as significantly (p<0.05) higher microbial levels were observed across all microhabitats (tidal water, intertidal water and benthic sediment) as well as stations (upstream – Okoro, midstream – Kampa and downstream – Emeroke). It was observed that the sediment samples produced significantly (p<0.05) higher THB counts than tidal and intertidal water samples. Similar trends were observed for CUB, TF and CUF respectively. There was no significant difference (p>0.05) between the mean values of upstream, midstream and downstream. In all microhabitats and stations, the densities of crude oil-utilizing microorganisms were significantly (p<0.05) low compared to total heterotrophic counts. The total fungal counts were significantly (p<0.05) low compared to total heterotrophic bacteria counts. The result showed relatively higher concentrations of heavy metals in sediment than in tidal and intertidal water samples. The results indicate that the water and sediment samples show a remarkable variation in heavy metals and total petroleum hydrocarbon as a result of the great human activities in the estuary.

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Section: Resultsmentioning

confidence: 97%

Iko River Estuary: Anthropogenic impacts and the microbial community alterations

Unimke

Ibiene

Okerentugba

2020

GSC Biol. and Pharm. Sci.

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“…Anaerobically, the bacteria can oxidize the oil chemotropically (Heider et al 1998). Here, hydrocarbons are transformed into its metabolic intermediates by bacteria through utilization of Mn, Fe, SO 4 −2 , NO 3 − , and ClO −3 as electron acceptor (Unimke et al, 2018). Alternatively, aerobic process involves the enzymatic incorporation of oxygen molecules into the carbon using oxygenases and peroxidases (Xuezhi et al, 2020).…”

Section: Microbial Mitigation Of Soils Degraded By Pollutantsmentioning

confidence: 99%

Soil health restoration in degraded lands: A microbiological perspective

Kumar,

Das,

Singh

et al. 2023

Land Degrad Dev

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Land degradation is one of the most pressing environmental problems of the 21st century particularly due to its impact on global food security and environmental quality through the loss of biodiversity and ecosystem services. Land degradation happens at an accelerated rate and affects regions inhabited by more than one‐third population of the world. This phenomenon resulted in a dramatic reduction in the productivity of cropland and rangeland of world thus threatening the environmental quality and food security. It manifests in various forms such as desertification, soil erosion, sodicity, salinity, heavy metal contamination, pesticide contamination, declining soil fertility, and fate of polycyclic aromatic hydrocarbons. The world now has a real chance for the next generation to grow sustainably and eliminate acute food scarcity. Microbes, as vital elements of soil, play an important role in maintaining soil biological properties and fertility. Due to their multifarious biological functions and metabolic uniqueness, microorganisms can fix or solubilize nutrients, add organic matters to the soil to improve its quality. Many of the microorganisms can produce biological compounds or enzymes, which can degrade or scavenge toxic substances from the soils. In this review, we have discussed in detail how diverse microorganisms can help to restore different types of degraded lands. The limitations in application of microorganisms in restoration of soil health and possible scopes to improve the applicability have also been discussed here.

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“…The major goal of this technology is to degrade organic pollutants to concentrations that are undetectable, or if detectable, to concentrations below the limits established as safe or acceptable by regulatory agencies (Okoh and Trejo-Hernandez, 2006). Microorganisms are able to transform (mineralize or cometabolize) contaminants by using them as carbon and energy source through a process called biodegradation (Kothari et al, 2013;Unimke et al, 2018). Phytoremediation Phytoremediation is a sustainable and green process in which live plants are used to remove or degrade contaminants from the environment (Cameselle et al, 2013).…”

Section: Microbial Remediationmentioning

confidence: 99%

Petroleum Hydrocarbon Contamination: Its Effects and Treatment Approaches – A Mini Review

Ismail¹

2022

AJBAR

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Petroleum hydrocarbons are among the major driving forces of advancement in the last Century. Some of the hydrocarbons are however of health and environmental significance, due to their recalcitrance and persistence leading to adverse effects on health and ecosystem stability. Environmental pollution with petroleum and petrochemical products has been recognized as a significant and serious problem. Most components of oil are toxic to humans and wildlife in general, as it is easily incorporated into the food chain. This fact has increased scientific interest in examining the distribution, fate and behaviour of oil and its derivatives in the environment. The potential danger which petroleum hydrocarbons pose to humans and the environment makes testing and treatment unavoidable. As a result, a number of investigations over several years have led to the discovery of treatment technologies including physical, chemical, thermal and biological processes. Attempts to present a concise review on the status of hydrocarbon contamination, its effects on microorganisms, plants, animals and the ecosystem have been made. Different treatment technologies with their advantages and setbacks are also presented. This would enlighten individuals and stakeholders on the dangers pose by the petroleum products especially that oil prospecting in the Northeastern Nigeria is been intensified

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Microbial Degradation of Petroleum Hydrocarbons: Realities, Challenges and Prospects

Cited by 17 publications

References 20 publications

Iko River Estuary: Anthropogenic impacts and the microbial community alterations

Iko River Estuary: Anthropogenic impacts and the microbial community alterations

Soil health restoration in degraded lands: A microbiological perspective

Petroleum Hydrocarbon Contamination: Its Effects and Treatment Approaches – A Mini Review

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