Bioremediation of Hydrocarbon Polluted Mangrove Swamp Soil from the Niger Delta using Organic and Inorganic Nutrients

Ezekoye, Charles Chibueze; Amakoromo, Ebiokpo Rebecca; Ibiene, A. A.

doi:10.9734/bbj/2015/15083

Cited by 9 publications

(4 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been reported that nutrients for bacterial growth such as nitrogen, phosphorus and potassium are rate limiting nutrients that can influence the overall rate of hydrocarbon degradation in oil-polluted soils (Azubuike et al 2016). Also, the observed low nutrient concentration is consistent with previous studies of oil-polluted soils (Ezekoye et al 2015 . 2017).…”

Section: Discussionsupporting

confidence: 92%

Comparative Study of Bacterial Response to Nutrient Amendments and Hydrocarbon Removal through Leaching During Remediation

Ughala¹,

Ogugbue²,

Okpokwasili³

2019

theijst

View full text Add to dashboard Cite

Comparative Study of Bacterial Response to NutrientAmendments and Hydrocarbon Removal through Leaching During Remediation IntroductionCrude oil spill is a leading and global environmental problem (Ibiene et al. 2011). Though the leading source of energy globally, hydrocarbon exploration and production can lead to severe environmental problems through spills from accidents, sabotage, equipment failure and human error (Nwaguma et al. 2016). Hydrocarbon exploration and production in the Niger Delta dating back to 1948 has led to devastating destruction of farmlands, aquaculture, creeks and wetlands (UNEP 2011; Anejionu et al. 2015). While the leading source of hydrocarbon spills in the Niger Delta can be historically traced to the activities of Multi-national oil companies (UNEP 2011), artisanal refining with little or no regard for the environment has also emerged as a leading and disturbing cause of hydrocarbon spills in the region (Pa et al. 2013;Chikere et al. 2019).Bioremediation is a cost effective method for dealing with hydrocarbon spills and reducing both its toxicity and risk (Ichor et al. 2014). In the Niger Delta, the environmental conditions (frequent rainfall, suitable temperature) are deemed favourable for accelerated hydrocarbon degradation compared to other regions of the world (Brown et al. 2017). However availability of nutrients can limit microbial proliferation and thus, the rate of hydrocarbon degradation (Azubuike et al. 2016). Nutrients can be supplied during remediation in either organic or inorganic forms (Chikere and Azubuike 2012). The use of organic based nutrient amendment is encouraged as it has the tendency of improving the oilpolluted soil biological and physicochemical properties (Odokuma and Dickson 2004;Zhang et al. 2009). On the other hand, inorganic fertilizers can lead to adverse effect on the soil pH, organic carbon and enzymatic activities in the soil(Li et

show abstract

Section: Discussionsupporting

confidence: 92%

Comparative Study of Bacterial Response to Nutrient Amendments and Hydrocarbon Removal through Leaching During Remediation

Ughala¹,

Ogugbue²,

Okpokwasili³

2019

theijst

View full text Add to dashboard Cite

show abstract

“…1C). Soils A and B have profiles consistent with weathered ULO, indicating that they have been contaminated longer than soil C. Aliphatic hydrocarbons lower than C 13 were not observed in any of the samples, potentially due to physiochemical processes such as photo-oxidation, volatilization and evaporation (Ezekoye et al 2015). Some compounds typically present in ULOs were undetected in all samples such as C 21 , which might be due to partial decomposition of the oil during its use in the engine (Song et al 2010).…”

Section: Discussionmentioning

confidence: 97%

Changes in bacterial diversity associated with bioremediation of used lubricating oil in tropical soils

et al. 2017

View full text Add to dashboard Cite

Used lubricating oil (ULO) is a widespread contaminant, particularly throughout tropical regions, and may be a candidate for bioremediation. However, little is known about the biodegradation potential or basic microbial ecology of ULO-contaminated soils. This study aims to determine the effects of used lubricating oil (ULO) on bacterial community structure and diversity. Using a combination of culture-based (agar plate counts) and molecular techniques (16S rRNA gene sequencing and DGGE), we investigated changes in soil bacterial communities from three different ULO-contaminated soils collected from motorcycle mechanical workshops (soil A, B, and C). We further explored the relationship between bacterial community structure, physiochemical soil parameters, and ULO composition in three ULO-contaminated soils. Results indicated that the three investigated soils had different community structures, which may be a result of the different ULO characteristics and physiochemical soil parameters of each site. Soil C had the highest ULO concentration and also the greatest diversity and richness of bacteria, which may be a result of higher nutrient retention, organic matter and cation exchange capacity (CEC), as well as freshness of oil compared to the other soils. In soils A and B, Proteobacteria (esp. Gammaproteobacteria) dominated the bacterial community, and in soil C, Actinobacteria and Firmicutes dominated. The genus Enterobacter, a member of the class Gammaproteobacteria, is known to include ULO-degraders, and this genus was the only one found in all three soils, suggesting that it could play a key role in the in situ degradation of ULO-contaminated tropical Thai soils. This study provides insights into our understanding of soil microbial richness, diversity, composition and structure in tropical ULO-contaminated soils, and may be useful for the development of strategies to improve bioremediation.

show abstract

“…1,000 g of soil in a mixer was contaminated with 100 ml of crude oil and homogenously mixed. The unpolluted soils were analyzed for physicochemical and petroleum hydrocarbon compositions to serve as the baseline (control) thus, establishing a standard (Ezekoye et al, 2015).…”

Section: Baseline Studymentioning

confidence: 99%

“…In this study, the percentage biodegradation of TPH in crude oil contaminated soil as mediated by organicnutrients were evaluated at different biostimulant dosages and contact time. Several authors have examined nitrogen and phosphorus content of these wastes in accelerating the bioremediation of oil contaminated soil ecosystem (Orji et al, 2012;Ezekoye et al,2015). It was observed from figure 1 that the %biodegradation continued to increase with increase in the biostimulants dosages and the contact time required for remediation.…”

Section: Total Petroleum Hydrocarbon (Tph) Degradation Analysismentioning

confidence: 99%

Kinetics of bioremediation of crude oil polluted soil using potato peels as bio-stimulant

Ezenwoko, GC,

Okey-Onyesolu CF,

Okoye CC

et al. 2023

World J. Adv. Res. Rev.

View full text Add to dashboard Cite

This study investigated the utilization of bio-stimulant derived from agro-based resource (potato peels) in the remediation of crude-oil contaminated soil. At a constant proportion of crude oil contamination, varying concentration of the biostimulant (5ml, 10ml, 15ml and 20ml) were introduced for the treatment (bioremediation and degradation) of the contaminated sites and left for a degradation period in plastic vessels. Periodic sampling of soil from each vessel was carried out at 5 days interval for total petroleum hydrocarbon analysis. Results indicated that after 20 days of exposure to the organic biostimulants, biodegradation of crude oil contaminated soil samples was directly proportional to the potato peels dosage. The potato peels (PO) derived biostimulant recorded 94.43 percentage degradation at 20ml dosage and 20 days contact time. Oil contaminated soil samples amended potato peels biostimulant recorded half-life of 0.702day and biodegradation rate constants of 0.986day-1. The zero order kinetic model best described the bioremediation kinetic behaviour of the bioremediation process. The findings of this research suggest that potato peels can be used as an effective organic amendment for the biodegradation of crude oil contaminated soil.

show abstract

Bioremediation of Hydrocarbon Polluted Mangrove Swamp Soil from the Niger Delta using Organic and Inorganic Nutrients

Cited by 9 publications

References 34 publications

Comparative Study of Bacterial Response to Nutrient Amendments and Hydrocarbon Removal through Leaching During Remediation

Comparative Study of Bacterial Response to Nutrient Amendments and Hydrocarbon Removal through Leaching During Remediation

Changes in bacterial diversity associated with bioremediation of used lubricating oil in tropical soils

Kinetics of bioremediation of crude oil polluted soil using potato peels as bio-stimulant

Contact Info

Product

Resources

About