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Comparative Toxicity Of Crude Oil And Kerosene On The Growth Of Nitrifying Bacteria Isolated From Soil
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CHAPTER ONE
INTRODUCTION
Crude oil and kerosene have useful applications in our society and are, therefore, used as
source of income and energy. However, the spill arising from crude oil and kerosene dumped into our environment is becoming a visible problem in our ecosystems ( Njoku et al., 2009). The environment is increasingly exposed to changes resulting from both crude oil and refined petroleum products contamination. These changes could be drastic and as such affect the ecosystem substantially (Ikhajiagbe and Anoliefo, 2010). Crude oil and its refined products can be released into the environment from a number of sources, which can pollute both land and water (Jane, 2010). Refined petroleum products result when crude oil is split into fractions such as petrol, kerosene, diesel oil, engine oil and many other petroleum products by a process called fractional distillation. Crude oil, which has accumulated underground, can reach the surface if not contained by impermeable rock.
Apart from this release of crude oil, the main sources of crude oil and refined petroleum products such as petrol, kerosene, diesel and motor engine oil, released on land comes from the disposal of waste motor oil, the leaking of storage tanks, and other spillages and accidents during the transportation of crude oil and other petroleum-based products (Raina et al., 2009). The spill arising from crude oil and refined petroleum products dumped into our environment is becoming a visible problem in our ecosystem. Crude oil and kerosene can pollute our farmlands and other arable lands and may, negatively, affect the growth and activities of nitrifying bacteria responsible for nitrification process, leading to loss of soil fertility (John et al., 2011). These contaminants/pollutants may contain components that may be toxic to soil microorganisms including the nitrifying bacteria and as a result may display some levels of toxicity on the growth of the nitrifying bacteria indigenous to the soil thereby affecting their activities in the soil.
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ABSRACT - [ Total Page(s): 1 ]Crude oil and kerosene have useful applications in the society and are, therefore, used as sources of income and energy. However, the spills arising from crude oil and kerosene in our environment are becoming a visible problem in our ecosystem. Crude oil and kerosene pollute our farmlands and other arable lands and may negatively affect the growth and activities of nitrifying bacteria responsible for nitrification process, leading to loss of soil fertility. Considering the important roles played ... Continue reading---
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ABSRACT - [ Total Page(s): 1 ]Crude oil and kerosene have useful applications in the society and are, therefore, used as sources of income and energy. However, the spills arising from crude oil and kerosene in our environment are becoming a visible problem in our ecosystem. Crude oil and kerosene pollute our farmlands and other arable lands and may negatively affect the growth and activities of nitrifying bacteria responsible for nitrification process, leading to loss of soil fertility. Considering the important roles played ... Continue reading---
CHAPTER ONE -- [Total Page(s) 1]
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CHAPTER ONE -- [Total Page(s) 1]
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