Soil quality assessment 33 months after crude oil spillage and clean-up

Okoro, Duke; Oviasogie, P. O.; Oviasogie, F.E.

doi:10.3184/095422911x12963991543492

Cited by 28 publications

(20 citation statements)

References 6 publications

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“…I and J) were directly related to clay content and % organic matter of the samples. Higher values for cation exchange capacity were obtained in Nzarke area for both depths because of higher % organic matter and clay content (Okoro et al, 2011). Generally, increase trend with 0-15 cm depth was observed for cation exchange capacity of the two locations.…”

Section: Resultsmentioning

confidence: 73%

The Effects of Crude Oil Spill on Some Soil Properties of Different Sites in Duhok Governorate-Kurdistan Region of Iraq

Hashim¹

2019

SJUOZ

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A study was conducted to investigate the impact of oil spillage on some properties of soils collected from Kashe and Nzarke sites in Duhok governorate, Kurdistan region of Iraq. Soil samples were taken from each site after one weak and then after three months at 0-15 cm and 15-35 cm depths with control samples approximately 500 m from outside oil spill area. The soil samples were analyzed using standardsof routine laboratory methods to determine some soil properties. Based on results of the study the contaminated area has higher % TN (percentage total nitrogen) (0.34 and 0.28 %), % TOC (percentage total carbon) ( 4.84 and 5.81 %), Pb (lead) (1.59 and 2.28 mg L-1) and Fe (Iron) (3.20 and 3.13 mg L-1) for Kashe and Nzarke sites respectively than the control especially for 0-15 cm. Crude oil causes decrease in soil pH below 8.2 and also reduced the concentration of available phosphorus to a values of (18.40 and 15.20 mg L-1) for Kashe and Nzarke soils respectively than the control (20.60 and 16.20 mg L-1) for the two sites respectively. Higher values for EC (electrical conductivity), % TN, available phosphorouswere found in Kashe site while Nzarke had higher % TOC, % OM (organic matter), CEC (cation exchange capacity), THC (total hydrocarbon) and available phosphorus.

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Section: Resultsmentioning

confidence: 73%

The Effects of Crude Oil Spill on Some Soil Properties of Different Sites in Duhok Governorate-Kurdistan Region of Iraq

Hashim¹

2019

SJUOZ

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“…Presence of residual hydrocarbon spills and oil may have had some direct impact in lowering the pH of the soil samples. It is also more likely that production of organic acid by microbial metabolism is responsible for the difference in pH [13]. According to [14], the soil CEC is a measure of the negative site of the soil colloid in which the positive charge cation act on.…”

Section: Resultsmentioning

confidence: 99%

Levels of Heavy Metals in Soil Sample from Active Automobile Workshops in Benin City

Anegbe¹,

Majebi²,

Ebhodaghe³

et al. 2019

IJEC

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The evaluation of heavy metals contamination of soils as a means of monitoring the status of the environment for the good of the ecosystem is crucial. Benin city was subdivided into four zones (south east SE, south west SW, north east NE and north west NW) In this study, top soil (TS) and distance top soil (DTS) samples from three hundred and thirty-nine auto repair workshops in Benin City, Nigeria were assessed for physico-chemical properties and heavy metals (HMs), using standard methods. The main soil properties (pH, cation exchange capacity, total organic carbon and particle sizes) were determined for a network of representative sampling sites. The results shows that the average levels of the heavy metals (excluding Fe) in soil samples from within and 30 m away from the automobile workshops in the various zones are 143.1 (88.6), 118.6 (86.9), 129.1 (79.2) and 143.3 (113.0) for SE, SW, NE and NW respectively (the values in bracket represents DTS). When compared with mean concentrations for other cities. The results revealed higher concentrations of heavy metals in topsoil samples than in 30 m away from the epicentre samples. The samples from North West and South East part of the city had higher Cr, Ni, Pb, and Zn contents than samples from the other Locations. All the heavy metals show significant differences in their means across the two sampling locations (TS and DTS). The correlation analysis showed that all the heavy metals were significantly correlated with each other. The principal component analysis produced only one component which accounted for 69.414% of the total variation between the heavy metals.

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“…For example, excavation (physical approach) has logistics and transport constraints [9][10][11][12] while incineration (chemical approach) adds greenhouse gases in the atmosphere leading to global warming. is leaves use of biological approaches such as phytoremediation as the safest, feasible, and desirable [13]. Phytoremediation uses plants and microbes [13].…”

Section: Introductionmentioning

confidence: 99%

“…is leaves use of biological approaches such as phytoremediation as the safest, feasible, and desirable [13]. Phytoremediation uses plants and microbes [13]. However, as indicated earlier, contaminated soils have deficient nutrients.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Phytoremediation of Hydrocarbon-Contaminated Soils in the Sudd Wetlands, South Sudan, Using Organic Manure

Ruley

Amoding

Tumuhairwe

et al. 2020

Applied and Environmental Soil Science

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Phytoremediation of hydrocarbon-contaminated soils is a challenging process. In an effort to enhance phytoremediation, soil was artificially contaminated with known concentration of light crude oil containing Total petroleum hydrocarbon (TPH) at a concentration of 75 gkg−1 soil. The contaminated soil was subjected to phytoremediation trial using four plant species (Oryza longistaminata, Sorghum arundinaceum, Tithonia diversifolia, and Hyparrhenia rufa) plus no plant used as control for natural attenuation. These phytoremediators were amended with concentrations (0, 5 and 10 gkg−1 soil) of organic manure (cow dung). Results at 120 days after planting, showed that application of manure at concentrations of 5 and 10 gkg−1 soil combined with an efficient phytoremediator can significantly enhance reduction of TPH compared to natural attenuation or use of either manure or a phytoremediator alone (p<0.05). The study also showed that a treatment combination of manure 5 gkg−1 soil, with a phytoremediator gives a similar mean percentage reduction of TPH as manure 10 gkg−1 soil (p>0.05). Therefore, the study concludes that use of phytoremediators and manure 5 gkg−1 soil could promote the restoration of TPH contaminated-soils in the Sudd region of South Sudan.

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Soil quality assessment 33 months after crude oil spillage and clean-up

Cited by 28 publications

References 6 publications

The Effects of Crude Oil Spill on Some Soil Properties of Different Sites in Duhok Governorate-Kurdistan Region of Iraq

The Effects of Crude Oil Spill on Some Soil Properties of Different Sites in Duhok Governorate-Kurdistan Region of Iraq

Levels of Heavy Metals in Soil Sample from Active Automobile Workshops in Benin City

Enhancing the Phytoremediation of Hydrocarbon-Contaminated Soils in the Sudd Wetlands, South Sudan, Using Organic Manure

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