scholarly journals Modeling Soil Organic Carbon in Crude Oil Contaminated Soil in the Niger Delta

2019 ◽  
Vol 4 (3) ◽  
pp. 93-96
Author(s):  
LEVI NGOZI NWAKWASI ◽  
B. C. Okoro ◽  
J. C. Osuagwu ◽  
A. N. Nwachukwu ◽  
J. C. Agunwamba
Keyword(s):  
Crude Oil ◽  
Contaminated Soil ◽  
Niger Delta ◽  
Potassium Depletion ◽  
Exploration And Exploitation ◽  
Residual Concentration ◽  
Standard Methods ◽  
Environmental Threat ◽  
Oil Spillage ◽  
Control Samples

Oil spillage is a major environmental threat in south south of Nigeria where most of oil exploration and exploitation activities takes place. If this goes on unchecked or poorly managed, it would lead to total annihilation of the ecosystem. The objective of this study is to develop a model for the prediction of potassium depletion in the crude oil contaminated soil with time using regression analysis. Each sample containing 10kg of soil was artificially polluted with 0.5, 1.0, 1.5, 2.0, and 2.5 liters of crude oil (Bonny Light).  The potassium concentrations were determined using standard methods. Results shows that the concentration of residual potassium in the soil for all the volumes of crude oil introduced into the soil decrees significantly with time when compared to values obtained for the control samples. The concentration of residual concentration in the control soil sample was about three times higher than the concentration obtained for other samples. The results obtained from the derived model were very close to the experimental value. The model is suitable for determining potassium content in crude oil polluted site.

Toxicity Assessment of some Crude Oil Contaminated Soils in the Niger Delta

2009 ◽  
Vol 62-64 ◽  
pp. 451-455 ◽  
Author(s):  
F.A. Aisien ◽  
J.C. Chiadikobi ◽  
E.T. Aisien
Keyword(s):  
Heavy Metals ◽  
Moisture Content ◽  
Crude Oil ◽  
Contaminated Soil ◽  
Contaminated Soils ◽  
Niger Delta ◽  
Extraction Methods ◽  
Toxicity Assessment ◽  
Soil Samples ◽  
Physiochemical Parameters

This paper considered the toxicity assessment of some crude oil contaminated soils in Niger Delta areas. The soil samples were collected from different horizontal distances, vertical depths and contaminated soil of different ages. The heavy metals in the contaminated soils were digested and extracted using di-acid digested and DTPA extraction methods respectively. The physiochemical parameters (moisture content, pH, N, P and heavy metals (Ni, Pb and Cd) were analysed with APHA method. The heavy metals concentration was determined using atomic absorption spectrophotometer (AAS). The results show that the metals concentration decreased with the age of the contaminated soil and with increased vertical depths. However, the metals concentrations were almost constant at different horizontal distances. Similar trend was observed for the moisture content, pH, N, P and K.

scholarly journals MODELING SOIL PH FATE IN CRUDE OIL CONTAMINATED SOIL IN THE NIGER DELTA

2018 ◽  
Vol VI (XI) ◽  
Author(s):  
N. L. Nwakwasi ◽  
J. C. Osuagwu ◽  
B. U. Dike ◽  
H. U. Nwoke ◽  
J. C. Agunwamba
Keyword(s):  
Crude Oil ◽  
Soil Ph ◽  
Contaminated Soil ◽  
Niger Delta

scholarly journals Acute toxicity of crude oil from NNPC and artisanal refineries in Niger Delta on selected aquatic biota

2021 ◽  
Vol 15 (3) ◽  
pp. 016-024
Author(s):  
Mobene Eneriene Luke ◽  
Lucky Obukowho Odokuma
Keyword(s):  
Acute Toxicity ◽  
Physicochemical Properties ◽  
Crude Oil ◽  
Aquatic Ecosystem ◽  
Niger Delta ◽  
Toxicity Assessment ◽  
Trophic Levels ◽  
Aquatic Biota ◽  
Oil Spillage ◽  
Test Organisms

The spill of Crude oil from artisanal refineries and government owned pipelines has become recurrent situation in the Niger Delta, leading to devastating effects on the aquatic ecosystem. The toxicity of Crude oil from NNPC (Nigerian National Petroleum Corporation) refinery and selected artisanal refineries in Bolo, Twon-Brass and Ekpemu of the Niger Delta were investigated. The physicochemical properties of the products from the artisanal refineries short fall of the standards of Crude oil for refineries, as they contained impurities. The toxicity of the Crude oil was tested using three representatives of different trophic levels in the aquatic habitat; Fish (Tilapia guineensis), Crusteceans (Paleamonetes africanus), and Moluscs (Tympanotomus fuscatus). The LC50, NOEC, LOEC, and TUa were the indices used for toxicity assessment of the crude oil on the test organisms. The study revealed that all the Crude oil samples were toxic to the organisms. The degree of toxicity of crude oil showed the following trend; Ekpemu (LC50 – 0.02ppt)> Twon-Brass (LC50 – 0.06ppt)> Bolo (LC50 – 0.11ppt)> NNPC (LC50 – 4.63ppt), while the degree of sensitivity was; Tilapia guineensis > Paleamonetes africanus > Tympanotonus fuscatus. The findings further emphasize the need to control Crude oil spillage into the aquatic ecosystem.

scholarly journals Experiential metafunction: representing environmental degradation

2021 ◽  
Vol 5 (1) ◽  
pp. 129-145
Author(s):  
Richard Oliseyenum Maledo ◽  
Joyce Uzezi Edhere
Keyword(s):  
Crude Oil ◽  
Literary Criticism ◽  
Environmental Degradation ◽  
Niger Delta ◽  
Linguistic Analysis ◽  
Exploration And Exploitation ◽  
Delta Area ◽  
Ecological Degradation ◽  
Creative Writers ◽  
Linguistic Framework

The constant exploration and exploitation of crude oil in the Niger Delta area of Nigeria had had a negative consequential effect on the entire ecosystem of the region. This has been a source of national and international concern and has attracted the attention of scholars from several disciplines, within and outside the region. Creative writers were not left out and this had given birth to which poetry was one of its most prolific genres. Though regional, the literature in general and poetry, in particular, had attracted myriads of attention from eco-literary criticism while the language of the poems had been understudied. Therefore, this study is a linguistic analysis of Niger Delta environmental poetry. Seven poems were purposefully selected from Tanure Ojaide’s Songs of Myself: Quartet (2015) and Nnimo Bassey’s We Thought It Was Oil but It Was Blood (2002).  The Hallidayan Transitivity system of the Experiential meaning of the clause was adopted as a linguistic framework to show how the ecological realities of the region were encoded in the structure of the clause. The study revealed that the nature of the processes and the participants’ roles aptly encoded ecological degradation in the structure of the clause.

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