Ancient rocks and natural oils are rich with abundant and hidden information of ancient organic matters responsible for earth formation, including molecular and isotopic signatures of the organisms that existed at the time the organic matter was formed. Considering the above facts of astrobiology, research study was carried out on screening of oil indicating microorganisms from oil contaminated sites of major geo-political zones of Yobe State, Nigeria including Damaturu, Gashua, Potiskum and Nguru local Government areas.
Serial dilution was performed for all soil samples collected from the oil contaminated sites of mentioned local government areas followed by culture isolation and identification techniques for bacterial samples only. Nutrient agar was used for the isolation of the bacteria from the soil samples and mixed cultures were obtained. These bacterial cultures were inoculated in petroleum in order to see their oil utilizing capability. Two types of culture showed positive results among all isolated colonies. Rhizoid shaped gram positive rods isolated from soils of Damaturu, Gashua, Potiskum and Nguru & yellow pigmented gram negative bacterial colony isolated from soils of Potiskum and Nguru showed oil utilizing ability by positive growth in the refined crude oil (Petroleum, Diesel, etc.).
The oil utilizing ability of those specific bacteria shows their potentiality in detecting the presence of oil and acting as potential oil indicators in Sub-Saharan region of African Continent caring a long history of bio-geo sciences. Findings from the present research work may create an opening for encouraging the geo-biological potentials of West African Countries in astrobiological aspects.
Table of Contents
1.0. Introduction
1.1. Background of the Study
1.2. Statement of the Problem
1.3. Research Questions
1.4. Aim and Objectives (Purpose) of the Study
1.5. Significance of the Study
1.6. Scope and Limitation of the Study
1.7. Operational Definition of Terms
2.0. Introduction
2.1. Microbial Techniques for Hydrocarbon Exploration
2.2. Methane Oxidizing Bacteria
2.2.1. Microbial Oxidation of Methane
2.3. Ethane, Propane and Butane Oxidizing Bacteria
2.3.1. Microbial Oxidation of Ethane, Propane and N-Butane
2.4. Sample Collection Method.
2.5. Isolation of Hydrocarbon Oxidizing Bacteria
2.6. Molecular Biology Techniques
3.1. Collection of Soil Samples
3.2. Isolation of Bacteria from Soil Samples
3.2.1. Serial Dilution
3.2.2. Media Preparation and Sterilization
3.2.3. Spread Plate Method
3.3. Gram’s staining
3.4. Application of Oil Utilizing Bacteria
4.1. Results
4.1.1. Colony Characterization
4.1.3. Observation for Application of Oil Utilizing Bacteria
4.2. Discussion
5.1. Conclusion
5.2. Recommendations
Research Objectives and Themes
The primary aim of this research is to isolate oil-degrading microorganisms from soils within major regions of Yobe State, Nigeria, to evaluate their potential as indicators for subsurface oil and gas deposits. The study seeks to provide a cost-effective, low-risk supplementary exploration method that can be integrated with traditional geophysical and geological surveys.
- Screening and isolation of oil-indicating bacteria from soil samples.
- Evaluation of bacterial growth capabilities in the presence of refined petroleum products.
- Assessment of the relationship between microbial population density and hydrocarbon seepage.
- Development of microbiological screening as a tool for prioritizing petroleum exploration drilling sites.
Excerpt from the Book
1.0. Introduction
Geo-microbial prospecting for hydrocarbons is an exploration method on the premise that the light gaseous hydrocarbons migrate upward from subsurface petroleum accumulations by diffusion and effusion, and are utilized by a variety of microorganisms present in the sub-soil ecosystem. The hydrocarbon oxidizing bacteria exclusively use these gases as carbon source for their metabolic activities and growth. These bacteria are mostly found enriched in the shallow soils/sediments above hydrocarbon-bearing structures and can differentiate between hydrocarbon prospective and non-prospective areas.
Summary of Chapters
CHAPTER ONE GENERAL INTRODUCTION: This chapter outlines the fundamental premise of geo-microbial prospecting and presents the problem statement regarding the high costs and risks associated with traditional hydrocarbon exploration in Nigeria.
CHAPTER TWO LITERATURE REVIEW: This section details historical and current methodologies in microbial hydrocarbon exploration, focusing on methane, ethane, propane, and butane-oxidizing bacteria, as well as molecular biology techniques.
CHAPTER THREE MATERIALS AND METHODS: This chapter describes the technical procedure for collecting soil samples from four specific towns in Yobe State and the laboratory protocols used for isolation, staining, and testing the oil-utilizing capabilities of the bacteria.
CHAPTER FOUR RESULTS AND DISCUSSION: The chapter presents the empirical data from colony characterization and Gram staining, alongside an analysis of which specific bacterial cultures demonstrated positive growth when inoculated with petroleum.
CHAPTER FIVE CONCLUSION AND RECOMMENDATIONS: This final section summarizes the potential for using identified bacteria as oil indicators and provides suggestions for integrating these biological findings into broader petroleum exploration strategies in Northern Nigeria.
Keywords
Geo-political zones, Oil indictor, bacteria, refined crude oil, bio-geo sciences, astrobiology, hydrocarbon-oxidizing bacteria, microbial prospecting, soil samples, Yobe State, petroleum exploration, sub-soil ecosystem, Gram's staining, hydrocarbon seepage, bioremediation.
Frequently Asked Questions
What is the core focus of this research project?
The project investigates the feasibility of using specific oil-oxidizing bacteria as biological indicators to detect the presence of hydrocarbon deposits in the subsurface soils of Yobe State, Nigeria.
What are the primary thematic areas covered in the study?
The study covers microbial hydrocarbon exploration techniques, the isolation of specific bacterial strains from contaminated sites, and the evaluation of their petroleum-utilizing metabolic capabilities.
What is the primary objective of this research?
The objective is to isolate oil-degrading microorganisms to establish a cost-effective and low-risk prospecting method that can help prioritize drilling locations in areas where traditional geophysical data is scarce.
Which scientific methods were utilized in this research?
The researchers employed serial dilution, nutrient agar culture isolation, Gram staining for bacterial identification, and petroleum inoculation experiments to test for oil-degradation capabilities.
What does the main body of the work address?
The main body examines the literature regarding microbial prospecting, describes the specific materials and methods used for sampling across four towns in Yobe State, and presents the results of bacterial growth tests.
Which keywords best characterize this work?
Key terms include microbial prospecting, hydrocarbon-oxidizing bacteria, geo-microbial exploration, Yobe State, petroleum reservoirs, and oil indicators.
Why is this research particularly relevant for Northern Nigeria?
Since the northern region, including Yobe State, often lacks comprehensive geophysical data, this microbial method provides a viable alternative for identifying potential petroleum-bearing structures.
What significant finding resulted from the petroleum inoculation test?
The study found that specific rhizoid-shaped Gram-positive rods and certain yellow-pigmented Gram-negative rods demonstrated continuous growth in petroleum, marking them as potential indicators of subsurface oil.
- Arbeit zitieren
- Dr. Debajyoti Bose (Autor:in), 2014, Geo-biologically Important Oil Indicating Microorganisms of Sub-Saharan region. Screening of Oil Indicating Microorganisms from Major Geo-Political Zones of Yobe State-Nigeria, München, GRIN Verlag, https://www.grin.com/document/341767
