Effects of amendments on biodegradation of crude petroleum by sediment bacteria from Bonny River Estuary

Adoki, Akuro; Sokari, T. G.; Ibiebele, Dagogo D.

doi:10.1046/j.1365-2028.1999.00183.x

Cited by 4 publications

(2 citation statements)

References 21 publications

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“…Urea's slow release mechanism is attributed to the pathway of urease-catalyzed hydrolysis before ammonium is released. Urea has been demonstrated as an adequate and effective source of nitrogen in the enhanced bioremediation of petroleum contaminants in soils (Adoki et al, 1999;Brook et al, 2001;Negri et al, 2004;Shen and Bartha, 1994;Wang et al, 1990). Since large amounts of ammonium were observed increasing biodegradation rates (Brook et al, 2001), the potential amounts of ammonium that can be released by urea therefore appear to be beneficial to biodegradation.…”

Section: Introductionmentioning

confidence: 96%

Site-Specific Limitations of Using Urea as a Nitrogen Source in Biodegradation of Petroleum Wastes in Soil

Jin

Fallgren

2007

Soil and Sediment Contamination: An International Journal

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Nutrient addition is important to achieving the carbon/nitrogen balance and successful biodegradation of petroleum contaminants. Urea has been considered as a preferred nitrogen source in enhancing biodegradation, because of its high nitrogen content and commercial availability. This study investigated urea in the biodegradation of petroleumcontaminated soils collected from an arid and sandy area in Egypt. Ammonium nitrate served as the nitrogen amendment control in this study. Biodegradation of petroleumcontaminated soils from Wyoming was monitored as a comparison. Addition of urea failed to improve the enhancement of biodegradation of petroleum-impacted soil from the Egyptian site; in addition, urea demonstrates an adverse effect on the biodegradation rates. Results indicate that urea or its intermediates may inhibit the microorganisms involved in petroleum degradation. Data from this study suggest that the application of urea in the enhancement of biodegradation of petroleum compounds should consider site specificity, and may not be applicable in geological areas or soils structures similar to those in this study.

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Section: Introductionmentioning

confidence: 96%

Site-Specific Limitations of Using Urea as a Nitrogen Source in Biodegradation of Petroleum Wastes in Soil

Jin

Fallgren

2007

Soil and Sediment Contamination: An International Journal

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“…Inoculation of oilpolluted areas with oil-decomposing micro-organisms seems to be ineffective because of growth-limiting nitrogen and phosphorus concentrations in seawater (Le-Petit and Barthelemy, 1968;Zobell, 1969). Biodegradation of crude petroleum by heterotrophic bacteria in systems receiving NPK fertilizer factory effluents has been studied (Adoki et al, 1999). Reports show that urea and phosphorus sources were able to enhance biodegradation of crude petroleum.…”

Section: Introductionmentioning

confidence: 99%

Uptake of crude petroleum hydrocarbons by mudflat bacteria exposed to nitrogenous fertilizer plant effluents

Adoki

2007

Afr. J. Biotechnol.

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In the Niger delta, due to the large-scale exploration and exploitation of crude petroleum, hydrocarbon spills frequently occur. The adverse impacts of these occurrences have frequently been causes for concerns in the area. However, in open estuarine environments, minor spills have short-term effects due to washout by stream water and increased microbial action. The microbial degradation of low level spills is enhanced by the 'continuous' input of nitrogenous fertilizer (NPK) components. The 'continuous' input assists in mitigating dilution effects of the stream water thus increasing the availability of nutrients to the petroleum degrading microbes. The net result is the increased recovery potential of this estuarine environment in the event of pollution by crude oil hydrocarbons. Enumeration of viable aerobic heterotrophic bacteria showed that counts were higher in hydrocarbon amended nitrogenous fertilizer plant effluent than in the raw effluent. The higher counts were accompanied by a rapid decline in the level of crude petroleum in the amended effluent. The ability of aerobic heterotrophic mudflat bacteria to grow on three different refined petroleum products namely kerosine, diesel and engine oil was also studied. At the levels tested, there were no appreciable differences in growth patterns of petroleum utilizing bacteria in three refined products after 5 weeks incubation at ambient temperature.

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Differential Responses of Bacterial Communities Inhabiting Pristine and Industrially Polluted Sediment from Oil Spills along Dalian, China

Guo

Sun

et al. 2019

Journal of Coastal Research

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Effects of amendments on biodegradation of crude petroleum by sediment bacteria from Bonny River Estuary

Cited by 4 publications

References 21 publications

Site-Specific Limitations of Using Urea as a Nitrogen Source in Biodegradation of Petroleum Wastes in Soil

Site-Specific Limitations of Using Urea as a Nitrogen Source in Biodegradation of Petroleum Wastes in Soil

Uptake of crude petroleum hydrocarbons by mudflat bacteria exposed to nitrogenous fertilizer plant effluents

Differential Responses of Bacterial Communities Inhabiting Pristine and Industrially Polluted Sediment from Oil Spills along Dalian, China

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