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GEOTHERMAL RESOURCE POTENTIALS ESTIMATATION FROM THE INTERPRETATION OF AERO MAGNETIC DATA IN NORTHEASTERN NIGERIA
Abstract
This study estimates the geothermal resource potentials in Northeastern Nigeria through the interpretation of aeromagnetic data. Geothermal energy, a sustainable and renewable energy source, offers significant potential for addressing energy needs and reducing dependence on fossil fuels. The research focuses on identifying and analyzing subsurface geological structures that indicate geothermal potential, using aeromagnetic data as a primary tool for exploration.
Aeromagnetic data covering several regions in Northeastern Nigeria were acquired and processed using advanced geophysical techniques. The data interpretation involved mapping the magnetic anomalies, which were then correlated with known geological formations and thermal anomalies. The study identified several key areas with significant geothermal potential, characterized by high heat flow and the presence of geological features conducive to geothermal energy production, such as fractures, faults, and igneous intrusions.
The results of the study suggest that Northeastern Nigeria possesses substantial geothermal resources that could be harnessed for energy production. The identified geothermal prospects provide a foundation for more detailed geological and geophysical investigations, including ground-based surveys and exploratory drilling. The findings have important implications for energy policy and development in Nigeria, highlighting the need for investment in geothermal energy exploration and infrastructure.
In conclusion, the interpretation of aeromagnetic data has proven to be an effective method for estimating geothermal resource potentials in Northeastern Nigeria. This study contributes to the growing body of research on renewable energy resources in the region and supports the case for the development of geothermal energy as a viable component of Nigeria’s energy portfolio.
Key Words: Geothermal Resources, Aeromagnetic Data, Geophysical Interpretation, Northeastern Nigeria, Renewable Energy, Geological Structures.
Chapter One: Introduction
1.1 Background of the Study
Geothermal energy, a form of renewable energy derived from the natural heat of the Earth, has garnered significant interest due to its sustainability and potential to reduce dependency on fossil fuels. Northeastern Nigeria, characterized by its unique geological formations, presents an untapped opportunity for geothermal resource exploration. The use of aeromagnetic data to estimate geothermal potentials offers a cost-effective and efficient method to identify promising areas for further investigation.
Geothermal energy, harnessed from the natural heat of the Earth, represents a promising and sustainable alternative to conventional fossil fuels. With the increasing global demand for clean and renewable energy sources, geothermal energy has gained considerable attention due to its low environmental impact and potential for providing a continuous energy supply. In this context, exploring geothermal resources has become a critical endeavor for many countries, including Nigeria.
Northeastern Nigeria, with its unique geological and thermal characteristics, offers significant potential for geothermal energy development. However, despite the promising geothermal prospects, the region remains underexplored. Traditional methods of geothermal exploration, such as ground-based surveys and drilling, can be both time-consuming and costly. Therefore, utilizing aeromagnetic data for geothermal resource estimation presents an efficient and cost-effective approach to identifying and evaluating geothermal potentials.
Aeromagnetic surveys, which measure variations in the Earth’s magnetic field from an airborne platform, provide valuable geophysical data that can be used to infer the presence of subsurface geological structures associated with geothermal resources. Magnetic anomalies detected through these surveys often indicate the presence of igneous intrusions, fractures, and other features that are conducive to geothermal activity.
This study aims to estimate the geothermal resource potentials in Northeastern Nigeria by interpreting aeromagnetic data. By identifying and analyzing magnetic anomalies, this research seeks to pinpoint areas with significant geothermal potential, thereby providing a scientific basis for further exploration and development. The findings of this study have important implications for Nigeria’s energy sector, offering a pathway towards diversifying energy sources and promoting sustainable development.
1.2 Statement of the Problem
Nigeria’s energy sector predominantly relies on fossil fuels, which are not only finite but also contribute to environmental pollution and climate change. Despite the potential for renewable energy sources, geothermal energy remains underexplored in Nigeria. This study aims to address the gap by utilizing aeromagnetic data to identify geothermal resource potentials in Northeastern Nigeria, providing a scientific basis for future geothermal exploration and development.
1.3 Objectives of the Study
The primary objective of this study is to estimate the geothermal resource potentials in Northeastern Nigeria through the interpretation of aeromagnetic data. Specific objectives include:
To acquire and process aeromagnetic data from Northeastern Nigeria.
To identify and map magnetic anomalies indicative of geothermal resources.
To correlate magnetic anomalies with geological formations and thermal anomalies.
To assess the geothermal potential of identified areas based on geophysical data.
1.4 Research Questions
To guide this study, the following research questions are posed:
What are the significant magnetic anomalies present in Northeastern Nigeria as revealed by aeromagnetic data?
How do these magnetic anomalies correlate with known geological and thermal features?
Which areas in Northeastern Nigeria exhibit the highest potential for geothermal resources based on aeromagnetic data interpretation?
1.5 Hypotheses
The study is based on the following hypotheses:
There are significant magnetic anomalies in Northeastern Nigeria that correlate with geothermal resource indicators.
The interpretation of aeromagnetic data can effectively identify areas with high geothermal potential in Northeastern Nigeria.
1.6 Significance of the Study
This study is significant for several reasons:
It provides a scientific basis for exploring geothermal energy in Northeastern Nigeria, contributing to the diversification of Nigeria’s energy sources.
The findings can inform energy policy and investment decisions, promoting sustainable and renewable energy development.
It adds to the body of knowledge in geophysics and geothermal energy, offering a framework for similar studies in other regions.
1.7 Scope and Delimitations of the Study
The study focuses on Northeastern Nigeria, specifically areas where aeromagnetic data are available. It involves the acquisition, processing, and interpretation of aeromagnetic data to identify geothermal potentials. The study does not include ground-based surveys or exploratory drilling, which are recommended for future research.
1.8 Operational Definition of Terms
Geothermal Energy: Heat energy generated and stored in the Earth.
Aeromagnetic Data: Geophysical data obtained from the measurement of the Earth’s magnetic field from an airborne platform.
Magnetic Anomalies: Variations in the Earth’s magnetic field resulting from the presence of magnetic minerals in the Earth’s crust.
Geothermal Potential: The likelihood or capability of an area to produce geothermal energy based on geological and geophysical characteristics.
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APPLICATION OF LAWRENCE KOHLBERG’S CONVENTIONAL MORAL MODEL IN ENHANCING EMOTIONAL INTELLIGENCE AND DECISION MAKING
CHAPTER ONE
INTRODUCTION
Lawrence Kohlberg (1927-1987) described three stages of moral development which described the process through which people learn to discriminate right from wrong and to develop increasingly sophisticated appreciations of morality. He believed that his stages were cumulative; each built off understanding and abilities gained in prior stages. According to Kohlberg, moral development is a lifelong task, and many people fail to develop the more advanced stages of moral understanding.
father and son huggingKohlberg’s first ‘preconventional’ level describes children whose understanding of morality is essentially only driven by consequences. Essentially, “might makes right” to a preconventional mind, and they worry about what is right in wrong so they don’t get in trouble. Second stage ‘conventional’ morality describes people who act in moral ways because they believe that following the rules is the best way to promote good personal relationships and a healthy community. A conventional morality person believes it is wrong to steal not just because he doesn’t want to get punished but also because he doesn’t want his friends or family to be harmed. The final ‘postconventional’ level describes people whose view of morality transcend what the rules or laws say. Instead of just following rules without questioning them, ‘postconventional’ stage people determine what is moral based on a set of values or beliefs they think are right all the time. For example, during the Vietnam War, many Americans who were drafted to be soldiers opposed the war on moral grounds and fled to Canada rather than fight. Even though this behavior was against the law, these people decided that these particular laws did not follow the higher rules they believed in, and they chose to follow their higher rules.
There may have been previous researches in this subject. This work gives further explanations and analysis in application of lawrence kohlberg’s conventional moral model in enhancing emotional intelligence and decision making
H0: There is no relationship between lawrence kohlberg’s conventional moral model and the enhancement of emotional intelligence and decision making
H1: There is a relationship between lawrence kohlberg’s conventional moral model and the enhancement of emotional intelligence and decision making
Altruistic —Thinking of others.
Anthropomorphic —Taking on human characteristics or looking like humans.
Cognition —The act or process of knowing or perceiving.
Flat affect —Showing no emotion.
Moral choice —Deciding whether to act in the morally right way.
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INVESTIGATION OF LEACHATE PLUMES AND GROUNDWATER POLLUTION USING GEOPHYSICAL METHOD IN FEDERAL CAPITAL TERRITORY ABUJA, NIGERIA
Abstract:
The disposal of solid waste in landfills is a common practice worldwide, but the potential environmental impact, especially concerning groundwater pollution from leachate migration, necessitates thorough investigation and monitoring. This research focuses on assessing leachate plumes and groundwater pollution in the Federal Capital Territory (FCT), Abuja, Nigeria, utilizing geophysical methods to enhance spatial understanding and early detection.
The study begins with a comprehensive literature review, highlighting the global significance of landfill-related groundwater pollution and emphasizing the need for effective monitoring techniques. The chosen study area, the Federal Capital Territory, is characterized by rapid urbanization and increasing waste generation, making it a critical location for such investigations.
Geophysical methods, including Electrical Resistivity Tomography (ERT) and Ground Penetrating Radar (GPR), are employed to non-invasively explore the subsurface. ERT helps delineate variations in electrical resistivity associated with leachate migration, while GPR provides high-resolution images of subsurface structures and potential contamination plumes.
The objectives of this research include:
Mapping subsurface resistivity variations to identify potential leachate plumes.
Assessing the depth and lateral extent of groundwater contamination.
Correlating geophysical findings with hydrogeological parameters to understand the mechanisms of leachate migration.
Providing recommendations for sustainable landfill management and groundwater protection in the study area.
The anticipated outcomes aim to contribute valuable insights into the spatial distribution of leachate plumes and groundwater contamination in the Federal Capital Territory, aiding environmental planners, policymakers, and regulatory bodies in implementing effective strategies for sustainable waste management. Additionally, the research underscores the importance of geophysical methods as powerful tools for early detection and monitoring of environmental pollution.
Keywords: Geophysical Methods, Groundwater Pollution, Leachate Plumes, Environmental Monitoring, Electrical Resistivity Tomography (ERT), Ground Penetrating Radar (GPR), Landfill Management, Sustainable Waste Management, Federal Capital Territory, Abuja, Nigeria.
Chapter One:
Introduction
1.1 Background
Landfills play a crucial role in the disposal of municipal solid waste, providing a common solution to the ever-increasing challenges associated with urbanization and population growth. However, the improper management of landfills poses significant environmental threats, with leachate migration being a primary concern. Leachate, a liquid formed by the percolation of rainwater through waste materials, has the potential to contaminate groundwater and, consequently, endanger public health. The Federal Capital Territory (FCT) in Abuja, Nigeria, undergoing rapid urbanization and industrialization, faces escalating challenges in waste management and environmental conservation.
Understanding the pathways and extent of leachate migration in landfills is essential for effective environmental management and the protection of groundwater resources. This research seeks to investigate leachate plumes and groundwater pollution in the Federal Capital Territory, Abuja, utilizing advanced geophysical methods. The application of these methods will contribute to a comprehensive understanding of the spatial distribution of potential contaminants, allowing for informed decision-making in sustainable waste management practices.
Domestic, commercial, and industrial activities all produce solid waste. Open dumps, wasteland farm contamination, ponds, contamination in rocks, and deep underground injection are only a few of the different ways that solid waste can be disposed of. The use of landfill systems as a means of waste disposal is frequently outside of what is generally advised. Due to the creation of leachate and its movement through waste, landfills are sources of groundwater and soil pollution. After some time, a dumpsite experiences biological, chemical, and hydrological processes that cause the waste to weather and, as a result, become a source of pollution. In the FCT, open dump has been the standard procedure.
In a recent study conducted by on geophysical, geotechnical and water quality investigations of Gosa dumpsite in Abuja, Nigeria to unravel the feasibility of upgrading it to a modern sanitary landfill, inversion results of VES-DC data revealed 3-4 geoelectric layers with the soils classified as well graded clayey-sand to silty-sand with permeability between 5.1 × 10 ????/???? and 1.1 × 10 ????/????, which makes the groundwater prone to leachate pollution. The physio-chemical parameters of the water were generally below the WHO-recommended value. It could be inferred that only the northern part of the area possesses the required geophysical and geotechnical characteristics for upgrading to a sanitary landfill. The high concentration of radioactive elements in the water revealed that the present dumping activities have negatively impacted the groundwater quality
This study is aimed at investigating leachate plume and groundwater pollution within an Open dumpsite at Idugosa, Federal Capital Territory (FCT) Abuja, Nigeria using geophysical and physio-chemical Methods.
The Federal Capital Territory, Abuja is situated in the central parts of Nigeria, between latitudes 8° 25′ and 9 °25′ north and longitude 6° 47′ and 7 °40’ east. The location study area, Idugosa lies between 9° 03’N and 7° 34′ E with an elevation of 403.1 m and 9° 03’N and 7° 33’ E with an elevation of 394.1 m.
Abuja is bounded in the north by Kaduna state, in the west by Niger state, in the east by Nasarawa state and Kogi state in the south-west. The basement complex especially at the northcentral part is intruded by Mesozoic calc-alkaline ring complex rock referred to as younger granites, to differentiate them from much foliated, complex and deformed older granites.
1.2 Statement of the Problem
The improper disposal of solid waste in landfills poses a significant environmental threat, particularly in regions experiencing rapid urban development such as the Federal Capital Territory, Abuja. As urbanization progresses, the potential for leachate migration and groundwater pollution increases, raising concerns about the long-term consequences on both environmental and public health. The need for a detailed investigation into the pathways and extent of leachate plumes in landfills is paramount for mitigating environmental degradation and ensuring the sustainability of groundwater resources in the FCT.
1.3 Objectives of the Study
The primary objectives of this research are:
To employ geophysical methods, specifically Electrical Resistivity Tomography (ERT) and Ground Penetrating Radar (GPR), to map and delineate leachate plumes in landfills within the Federal Capital Territory, Abuja.
To assess the depth and lateral extent of groundwater pollution resulting from leachate migration in the study area.
To correlate geophysical findings with hydrogeological parameters, providing insights into the mechanisms of leachate migration.
To propose recommendations for sustainable landfill management and groundwater protection based on the research findings.
1.4 Significance of the Study
This research holds substantial significance in the following ways:
It contributes to the body of knowledge on the environmental impacts of landfills and leachate migration in rapidly urbanizing areas, specifically in the Federal Capital Territory, Abuja.
The findings provide valuable insights for environmental planners, policymakers, and regulatory bodies in formulating effective strategies for sustainable waste management and groundwater protection.
The research showcases the applicability and effectiveness of geophysical methods in early detection and monitoring of environmental pollution, offering a model for similar studies in other regions.
1.5 Scope of the Study
The study focuses on selected landfills within the Federal Capital Territory, Abuja, with a specific emphasis on mapping leachate plumes and assessing groundwater pollution using geophysical methods. The investigation encompasses the application of Electrical Resistivity Tomography (ERT) and Ground Penetrating Radar (GPR) to achieve a detailed understanding of subsurface conditions associated with leachate migration.
1.6 Research Methodology
The research will adopt a mixed-methods approach, incorporating both quantitative and qualitative techniques. The primary quantitative methods involve geophysical surveys using ERT and GPR, coupled with the collection of hydrogeological data. Qualitative methods include a comprehensive review of relevant literature, enabling a contextual understanding of the global and local implications of landfill-related groundwater pollution.
1.7 Structure of the Thesis
The thesis is structured into distinct chapters to provide a logical progression of the research. Chapter Two presents an extensive review of relevant literature, exploring the global context of landfill impacts and the application of geophysical methods in environmental studies. Subsequent chapters detail the research methodology, findings, analysis, and conclusions, contributing to a holistic understanding of leachate plumes and groundwater pollution in the Federal Capital Territory, Abuja.
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]]>COMPLEX TERRAIN; A CASE STUDY OF IKOLE EKITI
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GEOPHYSICAL INVESTIGATION FOR GROUNDWATER POTENTIAL
EVALUATION OF A REGOLITH AQUIFER IN A TYPICAL BASEMENT
COMPLEX TERRAIN; A CASE STUDY OF IKOLE EKITI
TABLE OF CONTENTS
Title page Page
Certification ii
Dedication iii
Acknowledgements iv
Table of Contents v
List of Figures viii
List of Table x
Abstract xi
CHAPTER ONE: INTRODUCTION
1.1 General Statement 1
1.2 Description of the study area 2
1.2.1 Location and accessibility of the study area 2
1.2.2 Relief, climate and vegetation 4 1.2.3 Drainage pattern of the study area 4
1.3 Aim and objectives 4
1.4 Scope of the project work 5
1.5 Previous work 5
1.6 Expected contribution to knowledge 8
CHAPTER TWO: LITERATURE REVIEW
2.1 Regional geology of the study area 9
2.1.1 Migmatite-Gneiss-Quartzite Complex 11
2.1.2 Slightly Migmatized to Non-Migmatized Meta-Sedimentary
and Metaigneous rocks 11
2.1.3 Older Granites (Pan African Granitoids) 11
2.1.4 Younger Granites 12
2.2 Geology of the study area 12
2.3 Hydrogeology of the study area 15
2.3.1 Groundwater 15
2.4 Principle of Electrical Resistivity Method 16
2.4.1 Factors Affecting Resistivity of Earth Materials 16
2.4.2 Basic Theory of Electrical Resistivity Method 17
2.4.3 Generalized Apparent Resistivity Equation 24
2.4.4 Electrode Array or Configuration 29
2.4.4.1 Schlumberger Electrode Array 29
2.5 Field Techniques 33
2.6 Data Presentation 34
2.7 Data Interpretation 35
CHAPTER THREE: MATERIALS AND METHODOLOGY
3.1 Materials 36
3.2 Methodology 37
CHAPTER FOUR: RESULTS AND DISCUSSION
4.1 Preamble 40
4.2 Groundwater Potential Evaluation 48
4.2.1 Overburden thickness isopachmap 48
4.2.2 Weathered layer thickness map 50
4.2.3 Weathered layer resistivity map 52
4.2.4 Bedrock relief map 54
4.2.5 Groundwater potential map 56
CHAPTER FIVE: CONCLUSION AND RECOMMENDATION
5.1 Conclusion 58
5.2 Recommendation 58
References 59
LIST OF FIGURE
Fig. 1.1: Location Map of the study areashowing the distribution of VES points 3
Fig. 2.1:Geological sketch map of Nigeria showing the major geological components;
The BasementComplex, and Sedimentary Basins. 10
Fig. 2.2: Geological map of Ekiti State showing the study area. 14
Fig. 2.3: Schematic Diagram of the Flow of Current through a Cylindrical Model. 17
Fig. 2.4: Spherical Body of Radius ‘r’ 20
Fig. 2.5: Current Source on aHemispherical Surface 22
Fig. 2.6: A Simple 2-Electrodes Array System 24
Fig. 2.7: Typical Electrical Resistivity Array 26
Fig. 2.8: Typical Schlumberger Electrode Configuration 30
Fig. 3.1: Map showing the distribution of VES points 39
Fig. 4.1: Typical VES representative model curves. 45
Fig. 4.2: Pie chart showing the frequency of curve types obtained from the study area 46
Fig. 4.3: Map showing the distribution of the curve types 47
Fig. 4.4: Overburden thickness isopach map 49
Fig. 4.5: Weathered layer isothickness map 51
Fig. 4.6: Weathered layer isoresistivity map 53
Fig. 4.7: Bedrock relief map 55
Fig. 4.8: Groundwater potential map 57
Table 4.1: Summary of the layer geoelectric parameters and lithologic interpretation. 41
Table 4.2:Classification of the resistivity sounding curves. 44
A geophysical investigation involving the electrical resistivity method was carried out at IkoleEkiti of South Western, Nigeria with the main aim of investigating the area for groundwater potential of the regolith aquifer.
The objectives are to identify geological structures and aquifers favorable to groundwater accumulation andalso input geoelectric layers parameters into a software to produce maps of the subsurface in order todetermine the groundwater potential of the regolith aquifer.
Thirty (30) Vertical Electrical Soundings (VES) using the Schlumberger array with maximum electrode separation AB/2 of 100m was carried out with ABEM SAS-300 Resistivity Meter. The VES data were presented as sounding curves and interpreted quantitatively through the method of partial curve matching and 1-D computer assisted forward modelling. The sounding curves show three layers tofour layers earth models. The three layer curve are characterized by H and A type which represents altogether about 54% of the curve types in the study while the four layer models are characterized by KH, KQ, QH and AH which altogether covers about 46% of the curve type in the study area. The overburden was assumed to include the topsoil, upper and lower saprolite, saprock, and weathered basement.
The weathered basement is the aquifer type delineated for the area. Groundwater potential was evaluated from the maps (i.e. overburden thickness, weathered layer thickness, weathered layer resistivity,and bedrock relief maps) revealing that the Northeastern, Eastern and Southeastern parts of the study area are the mostpromising region for borehole development. However, the western region of the study area can also be considered as fair forborehole development.
CHAPTER ONE
The science of geophysics applies the principles ofphysics to the study of the Earthapplicable in the delineation or mapping of subsurface features arising from local variation in the measured physical properties of specific target relative of its host. Thus, the measurements taken during geophysical investigation are influenced by the internal distribution of physical properties of underlying rocks(Kearyet al.,2002).
Geophysical investigation is the process of selecting an area of geologic interest and delineate the physical parameter of the object involved. The acquisition of data is fundamental to geophysical investigations and ‘real’ data is only acquired in the field.
Without real data no true practical conclusions can be made about a targeted causative. Geophysical investigation is found relevant in groundwater exploration, mining, engineering site investigation and environmental impact assessment.
Water,remains one of the vital elements in life and it is very much important to human existence. It is one natural resource that is not only essential for the survival of mankind but also for the survival of the natural environment. The availability of water has played a key role in the development of all civilizations. Indeed, especially in the ancient times, water scarcity prevented the development of settlements. Social welfare and economic development may also be hampered in theabsence of reliable water supplies.The rapid increase in population of the study area owing tourbanization has led to an increased pressure on underground water which is the major water resource in the area (Alabiet al., 2016).
The geoelectrical resistivity method has been successfully employed in the delineation of subsurface geological sequence, geological structures/features of interest, aquifer units, types and depth extent in almost all geological terrains (Oladapoet al., 2004; Akoet al., 2005). This is because of the significant resistivity contrasts that exist between different earth materials (Olorunfemiet al., 1993).
The Vertical Electrical Soundings (VES) has proved very popular with groundwater studies due to simplicity of the technique. Using this method, depth and thickness of various subsurface layers and their water yielding capabilities can be inferred. Therefore, evaluation of groundwater potential was done in order to know the groundwater yielding capabilities or groundwater conditions of the study area. In basement complex, unweathered basement rocks contain negligible groundwater. Significant aquifers however, develop within the weathered overburden and fractured bedrock. This research is particular to know feasibility of potable water (i.e. to know the promising areas for groundwater prospects) within the study area.
However, the groundwater conditions of an area is properly understood, it could be used as an effective tool in the planning of reliable water borehole in such area (Sunmonuet al., 2012).
1.2.1 Location and Accessibility of the Study Area
The study area is located in IkoleEkiti of EkitiState, South western, Nigeria. The study area lies within 7o45̍52.1̎N – 7o48̍54.5̎ N and 5o28̍05.3̎E– 5o33̍08.5̎E(Fig 1.1). The area is accessible through various footpaths or pathways.
Figure 1.1: LocationMap of the study area
1.2.2 Relief, Climate and Vegetation
The relief are of very rough hills to isolated hills and low lands. The study area falls within the tropical rain forest of southwestern Nigeriawith two distinct seasons which are the rainy season (April–October) and the dry season (November–March). Temperature ranges between 21°C and 28°C while the mean humidity is over 70%. The south westerly wind and the northeast trade winds blow in the rainy and dry (Harmattan) seasons respectively. Tropical forest exists in the south, while savannah occupies the northern peripheries. The mean annual rainfall is about 1800 mm. (http://ekitistate.gov.ng/about-ekiti/overview/).
The vegetation of the study area is greatly influenced by climate and relief of the area. It is the evergreen forest type which comprises of palm trees, timbers and grass. Human activities such as farming and hunting are prevalent in the study area. Industries thriving in the study area are Agriculture and Lumbering which include Timber/Saw mills.
1.2.3 Drainage Pattern of the Study Area
The most common type of drainage pattern in this area is dendritic type with undulating topography, where the small tributaries is joining to the main river. The study area is one of the most fertile, and with high degree of accessibility to itapaji dam with enormous minihydroelectric power potential, as well as water supply opportunities for irrigation and townships. Even Oye river nearby flows into River Ele and provides substantial alluvial deposits in the study area plains for year round agriculture. Ero dam in Moba is also nearby.
The aim of the study was to determine the groundwater potential of the regolith aquifer in the study area. The objectives of the study include:
i. Carry out reconnaissance survey of the study area and also acquire geographical coordinates of the study area in order to generate the base map. ii. Acquisition and interpretation of the Vertical Electrical Sounding data for structure and subsurface geologic sequence delineation respectively.
iii. From(ii), identify geological structures and aquifers favorable to groundwater accumulation and iv. From (iii), geoelectric layers parameters was inputinto a software to produce maps of the subsurface in order todetermine the groundwater potential of the regolith aquifer.
The scope of this study involve consultation of previous works of different geoscientists on related topics in scientific and geological journals, texts and goggling online researches on Precambrian Basement Complex, aquifer units and groundwater exploration.
Preliminary study of the area for reconnaissance survey geological and geophysical mapping of the study was carried out. Electrical resistivity data were acquired using the ABEM SAS-300 Resistivity Meter.
The processing and interpretation of the data were done. The VES data were interpreted using partial curve matching technique in terms of layer parameters underneath the sounding positions and the interpretation results are used to generate maps.
Various works, projects and researches had been carried out to delineate regolith aquifer groundwater potential, particularly in respect to their hydrogeological characteristics using various geophysical methods.
Akanaet al., (2016) carried out an investigation on the assessment of aquifer groundwater potential and its protective capacity in some towns of Yenagoa using the electrical resistivity method. They concluded that the Dar-zarrouk parameter (i.e. longitudinal conductance LC) indicate that the Southern Yenagoa had good to moderate aquifer protective capacity rating, while the Northern area had poor to weak aquifer protective capacity.
Alabiet al., (2016) carried out a geophysical investigation around the University Health Sciences of the Osun State University, Osogbo using the Schlumberger technique of the electrical resistivity method with the aim of evaluating the groundwater potential and access how protected the aquifer in the area could be to surfacepollutants. They concluded from their results that the study area might show good potential for groundwater but the groundwater is not safe.For groundwater development, adequate measure should be made to establish water treatment facility.
Eke et al., (2015) carried out a detailed hydro geophysical study of the aquifers of the Upper Imo River Basin, Southeastern Nigeria which they delineated the aquifers, evaluate their geometric characteristics and to assess their vulnerability of pollution from surface contaminants. Layer parameters interpreted from the VES data together with the available well datawere used to assess the vulnerability of the shallow aquifers using the DRASTIC model. The aquifer vulnerability index assessment revealed that about 55% of the study area falls within the moderate vulnerability zones with DRASTIC index values ranging from 102 to 140. About 30% of the study area have high vulnerability index while the remaining 15% of the study area have low vulnerability index with DRASTIC index values of between 85 and 99.
Faridet al., (2017) carried out a research about site-specific aquifer characteristics, subsurface lithology, and groundwater potentialby conducting 80 vertical electrical sounding surveys (VESs) in Rahim Yar Khan District (RYK), Punjab, Pakistan to distinguish the fresh groundwater aquifer from saline groundwater and to evaluate the aquifer protective capacity (APC) of overburden.
Oloruntolaet al., (2017) conducted a combination of vertical electrical soundings (VES),
2D electrical resistivity imaging (ERI) surveys and borehole logs at Magodo, Government Reserve Area (GRA) Phase 1, Isheri, Southwestern Nigeria, with the aim of delineating the different aquifers present and assessing the groundwater safety in the area. Their result shows that the underlying confined aquifer is well protected from contamination and can be utilized as a source of potable groundwater in the study area. This study therefore enabled the delineation of shallow aquifers, the variation of their thicknesses and presented a basis for safety assessment of groundwater potential zones in the study area.
Oni et al., (2017) carried out groundwater vulnerability assessmentat IgbaraOke Southwestern Nigeria, with a view to classifying the area into vulnerability zones, by applying the electrical resistivity method, using Schlumberger electrode arrays. Geoelectric parameters (layer resistivity and thickness) were determined from the interpreted data. The geoelectric parameters of the overlying layers across the area were used to assess the vulnerability of the underlying aquifers to near-surface contaminants with the aid of vulnerability maps generated. The total longitudinal conductance map shows the north central part of the study area as a weakly protected (0.1–0.19) area, while the northern and southern parts have poor protective capacity (<0.1); this is in agreement with the GOD method which shows the northern part of the study area as less vulnerable (0–0.1) while the southern part has low/moderate (0.1–0.3) vulnerability to contamination. The longitudinal conductance exaggerates the degree of susceptibility to contamination than the GOD and
GLSI models. From the models, vulnerability to contamination can be considered higher at the southern part than the northern part and therefore, sources of contamination like septic tank, refuse dump should be cited far from groundwater development area.
Sunmonuet al., (2012) conducted a vertical electrical sounding method at Oyo State industrial estate Ogbomoso with a view to determining thegroundwater potential of the study area. The geoelectric sections obtained from the sounding curves revealed 3-layer and 4-layer earth models respectively. The models showed the subsurface layers categorized into the topsoil, weathered/clay, fractured layers and the fresh bedrock. The weathered basement and fractured basement are the aquifer types delineated for the area. Groundwater potential evaluated from the maps (i.e. overburden thickness, anisotropic coefficient, weathered layer isothickness, weathered layer isoresistivity, transverse resistance and bedrock relief maps) revealed that the Southern and Eastern parts of the study area are the most promising region for borehole development. However, Northeastern region of the study area can also be considered as fair for borehole development.
The various investigation and studies carried out by the different authors above, provided basic background information on the hydrogeological framework, changes in lithology, electrical properties and nature of the rocks in typical basement environment.
This study will provide adequate information about the groundwater potential of regolith aquifer and lithological sequences of the study area
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REMOVAL OF NITRATE FROM GROUND WATER
Abstract
In this study, coagulation and electrocoagulation processes were compared with regard to their respective efficiencies as to the removal of nitrates from water. The results indicate that electrocoagulation is an effective technology for nitrate removal because nitrate anions preferentially adsorb onto the surfaces of growing metal-hydroxide precipitates. Other similar results were observed when using iron or aluminium electrodes whenever coagulation reagents, aluminium or iron, were plotted in molar units and the same adsorption isotherm was obtained. Since electrocoagulation merely acts as a dosing coagulant technology, current density does not influence the removal of nitrates from water. However, it strongly affects the feasibility of nitrate removal because current density increases the operational cell potential. In other words, current density influences the power consumption that is required to provide a specific dose of reagent. On the other hand, the coagulation results indicate that this technology is not suitable for removing nitrate from water. The huge increase in conductivity observed during coagulant dosing (in comparison to the conductivity that was obtained when using electrocoagulation) appears to promote competition among nitrates and coagulant counter ions. It also decreases the widths of the double layers that form around the precipitate particles. Both of these processes most likely explain why nitrates cannot be removed from water using a coagulation process.
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REMOVAL OF NITRATE FROM GROUND WATER
Abstract
In this study, coagulation and electrocoagulation processes were compared with regard to their respective efficiencies as to the removal of nitrates from water. The results indicate that electrocoagulation is an effective technology for nitrate removal because nitrate anions preferentially adsorb onto the surfaces of growing metal-hydroxide precipitates. Other similar results were observed when using iron or aluminium electrodes whenever coagulation reagents, aluminium or iron, were plotted in molar units and the same adsorption isotherm was obtained. Since electrocoagulation merely acts as a dosing coagulant technology, current density does not influence the removal of nitrates from water. However, it strongly affects the feasibility of nitrate removal because current density increases the operational cell potential. In other words, current density influences the power consumption that is required to provide a specific dose of reagent. On the other hand, the coagulation results indicate that this technology is not suitable for removing nitrate from water. The huge increase in conductivity observed during coagulant dosing (in comparison to the conductivity that was obtained when using electrocoagulation) appears to promote competition among nitrates and coagulant counter ions. It also decreases the widths of the double layers that form around the precipitate particles. Both of these processes most likely explain why nitrates cannot be removed from water using a coagulation process.
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MINERALOGICAL CHARACTERISITCS OF ZANKAN LITHIUM ORE” A CASE STUDY OF PITS 1 AND 2
Abstract:
The increasing global demand for lithium, driven primarily by the burgeoning electric vehicle industry, underscores the importance of understanding the mineralogical characteristics of lithium ore deposits. This research presents a comprehensive analysis of the mineralogical composition of Zankan lithium ore, focusing specifically on Pits 1 and 2 within the geological context. The study employs advanced mineralogical techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), and chemical analysis, to elucidate the key minerals associated with lithium in the ore deposits.
Through systematic sampling and rigorous laboratory analyses, the research aims to identify and quantify the mineral phases present in the Zankan lithium ore, with a particular emphasis on lithium-bearing minerals. The mineralogical data obtained will contribute to a deeper understanding of the ore’s composition, aiding in the optimization of extraction processes and the development of efficient beneficiation techniques.
Furthermore, the study explores variations in mineralogical characteristics between Pits 1 and 2, providing insights into the spatial distribution and geological nuances within the Zankan lithium deposit. Understanding these variations is crucial for strategic mine planning and resource management.
The findings of this research are anticipated to have implications for the mining and processing industries involved in lithium extraction, contributing valuable knowledge to the broader field of mineral resource exploration and development. As lithium continues to play a vital role in advancing green technologies, a detailed mineralogical understanding of lithium ore deposits such as Zankan becomes imperative for sustainable and efficient resource utilization.
TABLE OF CONTENT
Chapter 1: Introduction
1.1 Background of the Study
1.1.1 Global Significance of Lithium
1.1.2 Relevance of Mineralogical Analysis
1.2 Statement of the Problem
1.2.1 Knowledge Gap in Zankan Lithium Ore
1.2.2 Importance of Pits 1 and 2
1.3 Objectives of the Study
1.3.1 General Objective
1.3.2 Specific Objectives
1.4 Research Questions
1.5 Significance of the Study
1.6 Scope and Limitations
1.6.1 Geographical Scope
1.6.2 Temporal Scope
1.6.3 Limitations and Constraints
1.7 Organization of the Thesis
Chapter 2: Literature Review
2.1 Lithium Deposits and Occurrence
2.1.1 Global Distribution
2.1.2 Geological Formation of Lithium Ores
2.2 Significance of Mineralogical Studies in Lithium Exploration
2.3 Methods of Mineralogical Analysis
2.3.1 X-ray Diffraction (XRD)
2.3.2 Scanning Electron Microscopy (SEM)
2.3.3 Chemical Analysis Techniques
2.4 Case Studies on Mineralogical Analysis of Lithium Ores
2.4.1 Previous Studies on Zankan Lithium Ore
2.4.2 Comparative Analysis with Other Lithium Deposits
2.5 Gaps in Existing Knowledge
Chapter 3: Research Methodology
3.1 Study Area Description
3.1.1 Geographical Location of Zankan Lithium Deposit
3.1.2 Geological Characteristics of Pits 1 and 2
3.2 Sampling Design and Procedures
3.2.1 Sample Collection Methods
3.2.2 Sample Size and Location
3.3 Laboratory Analysis Techniques
3.3.1 X-ray Diffraction (XRD) Protocol
3.3.2 Scanning Electron Microscopy (SEM) Procedures
3.3.3 Chemical Analysis Protocols
3.4 Data Analysis
3.4.1 Quantitative Mineralogical Analysis
3.4.2 Comparative Analysis of Pits 1 and 2
3.5 Ethical Considerations
Chapter 4: Results and Discussion
4.1 Overview of Lithium-Bearing Minerals Identified
4.1.1 Major Minerals
4.1.2 Lithium-Specific Minerals
4.2 Comparative Analysis of Mineralogical Composition in Pits 1 and 2
4.2.1 Spatial Distribution Patterns
4.2.2 Geological Implications
4.3 Correlation between Mineralogical Data and Lithium Extraction Potential
4.3.1 Identification of Key Lithium-Bearing Phases
4.3.2 Implications for Extraction Efficiency
4.4 Comparison with Previous Studies on Zankan Lithium Ore
4.5 Constraints and Challenges Encountered in the Analysis
Chapter 5: Conclusion and Recommendations
5.1 Summary of Findings
5.1.1 Mineralogical Composition of Zankan Lithium Ore
5.1.2 Spatial Variations between Pits 1 and 2
5.2 Implications of the Study
5.2.1 Insights for Lithium Extraction Processes
5.2.2 Geological Significance for Future Exploration
5.3 Recommendations for Further Research
5.3.1 Additional In-Depth Mineralogical Studies
5.3.2 Prospects for Technological Advancements
5.4 Conclusion
5.4.1 Synthesis of Key Findings
5.4.2 Final Remarks on the Study
References
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APPLICATION OF GEOELECTRICAL RESISTIVITY IMAGING TO INVESTIGATE GROUNDWATER POTENTIAL IN KATSINA.
ABSTRACT
Geoelectrical resistivity imaging using both 2D and Vertical Electrical Sounding (1D) method was carried out in Atan , Ado/Odo Ota Local Government, Ogun State ,Nigeria using the PAS earth resistivity meter. Three profiles was carried out using both Wenner and Schlumberger array configuration. The data was interpreted using RES2DINV for 2D and computer iteration method (WinResist) for VES. Results showed that there are five major layers which described the geological structure of the study area. The resistivity values ranges between 1200Ωm to 4000Ωm, 500Ωm to 1000Ωm, 400Ωm to 800Ωm , 200Ωm to 400Ωm and 60.7 Ωm to approximately 100Ωm respectively according to the structures. VES1, VES 2, VES 3 and VES 4 apparent resistivity curve shows the different layers with their corresponding thicknesses. The study area revealed that the depth to the aquifer ranges between 130m t0 140m.
CHAPTER ONE
INTRODUCTION
Groundwater has an excellent microbiological quality and generally adequate chemical quality for most uses. Nine major chemical constituents (Na, Ca, Mg, KHCO3, Cl, SO4, NO3 and Si) make up 99% of the solute content of natural groundwater. The proportion of these constituents reflects the geology and history of the groundwater. Minor and trace constituents make up the remaining 1% of the total, and their presence (or absence) can occasionally give rise to health problems or make them unacceptable for human or animal use (British Geological Survey to Africa) .
Groundwater and other mineral resources such as hydrocarbons and solid minerals are of great abundance in Nigeria. The true riches of any country depend on its ability to provide for its dwellers. Potable water is one of the major resources that a citizen of any nation can benefit from (Alile, 2008). This is so because water is a free course of nature. It is a gift of God to mankind. This wonderful resources have transcends so many generation because of its value to human life. Water is one of the major determinants of economical development. Water has found its usefulness in every human endeavour such as manufacturing industry, agricultural industry, transportation industry, construction industry, home usage and so on. Because of the importance of this resources new technology have been developed in search of this resources. Water search has extended from surface to ground exploration. There are parameters that characterized groundwater such as conductivity, porosity, permeability and transmissivity. All these parameters are determined using any geophysical methods such as magnetic methods, gravity methods etc. In this research work, electrical resistivity method was employed for groundwater exploration (Alile, 2008). Geoelectrical resistivity surveys are often used to search for groundwater in both porous and fissured media. Clean sands and gravels which have porosities always make good aquifers when saturated with fresh water which can easily be differentiated from lower- resistivity impermeable clays and marls and also from bedrock which is mainly of much higher resistivity (Sharma, 1997). Areas where the groundwater is significantly saline, the aquifers resistivity is reduced greatly and resistivity surveying can delineate the boundaries of the body of saline water (Sharma, 1997).
Geoelectrical resistivity method has developed greatly and has become an important instrument in hydrological studies, mineral prospecting and mining as well as in environmental and engineering applications. (Griffiths et al; 1990; Alile et al; 2010; Griffiths and Barker, 1993; Dahlin and Loke; Aizebeokhai et al; 2010). This underlying principle of measuring subsurface variation using electrical resistivity within the earth was developed by Schlumberger who conducted the first experiment in 1912 in the field of Normandy and the same idea was also developed by frank Wenner in the united State of America. (Kunetz, 1966). This geoelectrical resistivity method has been found useful in locating groundwater in fissured rock, mapping of plumes, mapping of boundaries of saline groundwater and exploration of geothermal fluids.
Due to the successful application of geoelectrical resistivity over the years in groundwater exploration, this propels me to adopt geoelectrical resistivity method to investigate groundwater potential and geological structure of the study area However; geoelectrical resistivity surveys have undergone significant changes in the last three decades. The traditional horizontal layering technique for investigating geoelectical resistivity data are rapidly being replaced with 2- dimensional and 3- dimensional models of interpretation especially in complex and heterogeneous subsurface media.
Field techniques have advanced from manual measurements made at separate and independent points to the use of automated machine called terrameter with multi-electrode array along the measurement profile. Till 1980s, data acquisition was more or less carried out manually and this is demanding and slow and the quality of the measured data is poor. Therefore a range of fast automated multi-electrode and multichannel data acquisition system now exists that follows flexibility in the acquisition of geoelectrical resistivity data. (Barker, 1981; Stummer and Maurer, 2001; Auken et al; 2006).
1.2 GEOLOGICAL DESCRIPTION OF UNDERGROUND WATER
Groundwater can be found almost everywhere. The water table may be deep or shallow and may rise or fall depending on many factors.
Heavy rains or snow may cause the water table to rise or fall. Groundwater is stored in and moves slowly through layers of soil, sand and rocks called aquifers. The speed of groundwater flows depends on the size of the spaces in the soil or rock and how well the space is connected. Groundwater is brought to the surface naturally through a spring or can be discharged into lakes and streams. This water can also be extracted through a well drilled into the aquifers. A well is a pipe in the ground that is filled with water. This water can then be brought to the surface by a pump. Shallow wells may go dry if the water table falls below the bottom of the well. Some wells called artesian well do not need a pump because of natural pressures that force the water up and out of the well.
Groundwater supplies are replenished or recharged by rain and snow melt. In some areas of the world, people face serious water shortages because groundwater is used faster than it is naturally replenished. In other area groundwater is polluted by human activities. Groundwater is a natural resource that is use for drinking, recreation, industry and agriculture. In areas where material above the aquifer is permeable pollutants can sink into the groundwater. Groundwater can be polluted by landfills, septic tanks, leakages of underground gas tanks and from overuse of fertilizers and pesticides.
1.2.1 THE OCCURRENCE OF GROUNDWATER.
The groundwater is a term used for water which occurs beneath the ground surface. It is an important constituent of hydrological cycle and plays a major role in augmenting water supply to meet the major increasing demands in various sectors. Groundwater occurs in the upper layers of the earth’s crust. These layers consist of igneous, sedimentary and metamorphic rocks. During their origin and later evolution, these rocks develop porous and permeable structures containing pore spaces. Within these pores, the water of meteoric, juvenile, connate or metamorphic origin occurs in both liquid and gaseous phases along with other gases and liquid such as hydrocarbons and magma. Meteoric water includes rain water, lake and river waters. Juvenile water is assumed to be derived from the mantle during degassing processes (Bredchoeft and Norton, 1990; Rai, 2004). Formation water is the water trapped during the deposition of sediments and produced during diagenetic reaction. Metamorphic waters are derived from the dehydration of hydroxyl bearing minerals through rising pressure and temperature. These fluids are subjected to a wide variety of stresses such as recharge due to precipitation, return flow from irrigation, seapage from canals, lakes, ponds etc. As a result, a groundwater regime consisting of geological formation and groundwater is established.
1.2.2 THE MOVEMENT OF GROUNDWATER
Groundwater, apart from being a major source of water supply, groundwater is the most important geological agent among all fluids of the earth’s system and plays important role in many geological processes. This is so because of its moving ability and its ability to interact with the surrounding environments. The interaction of groundwater with its surrounding generates various natural process, products and conditions and the moving ability helps in self organizing the effects of interaction within the flow system. Three main types of interactions have been identified; they are chemical, mechanical and kinetic. Accordingly, the processes of these interactions are classified as chemical processes, mechanical processes and kinetic processes. (Toth, 1999; Rai, 2002). Chemical processes include dissolution, hydration, hydrolysis, oxidation, reduction, chemical precipitation and base exchange. Pore – pressure change and lubrication are the two most important physical processes that affect many geological phenomena. Reduction or increases in pore pressures affect the magnitude and direction of groundwater velocity which ultimately affect the type, rate and direction of chemical reactions, the solubility of minerals etc. They also affect the strength and integrity of rocks, leading to their deformation. Lubrication by water of discontinuity boundaries in the rock frame work such as grain surfaces in soils and in unconsolidated sediments or fracture and fault planes in hard rock reduces friction and enhances the effect of shear stresses. As a consequence, shear movements of soil and rocks can be induced along the discontinuities which may lead to the occurrence of land subsidence, landslides and earthquake like geologic phenomena.
A wide variety of matter in many different forms such as aqueous solutions of organic and inorganic ions, matter in colloidal forms or larger-sized suspended grains, gases, molecules of liquid hydrocarbons, viruses and bacteria are transported by groundwater movement. The importance of transport of these matter resulted in the leaching and removing of minerals from soils and rocks, carrying nutrients to surface water bodies, building and emigrating deposits of metallic and non-metallic minerals and hydrocarbons, causing washing and biodegradation of ore deposits and hydrocarbon accumulation and concentrating contaminants at suitable subsurface locations. Heat transport by moving groundwater leads to the formation of hot springs, hydrothermal ore deposits or other types of geothermal anomalies.
1.2.3 TRANSMISSION OF GROUNDWATER.
The dynamics of groundwater is mostly influenced by four hydrological processes. These are infiltration, recharge, leakage and withdrawal. These are processes through which groundwater is transmitted. Infiltration is the process of entry of surface water into the soil through ground surface. The rate of infiltration is defined as the volume of water entering into the ground surface through its unit cross-sectional area in unit time. The infiltration rate is known to vary with time which is initially decreases due to dispersion and swelling of soil particles after wetting (Alile, 2008). Then for a shorter period it increases due to the release of entrapped air from the pores. Thereafter, it decreases more or less in exponential form due to the clogging of the soil pores at the bottom of the surface reservoir. When the infiltration rate drops below a prescribed lower limit such that it is no more economical for aquifer recharging, then the infiltration operation is disconnected for some time. After drying, cleaning and if necessary scraping of the silty bottom of the recharge basin, infiltration is brought back to its almost initial value and the basin is put back to use for the next phase of the infiltration operation ( Bear, 1979; Husiman and Olsthoorn, 1983; Zomonody, 1991; Deta,
1995; Dickenson and Bachman, 1995; Mousavi and Rezai,1999). Several models and Horton model have been proposed to describe the infiltration rate(singh, 1989) . Among them the Horton model is widely used which is given in the following form.
Where I(t) is the infiltration rate at time t. Io and Ic are the initial and final values of the infiltration rate. Β is a proportionality factor dependent on soil type and initial moisture content. However, this model describes only exponential decay of the infiltration rate for one cycle of infiltration. Such a composite nature of decreasing and increasing filtration rates for any number of dimensions can be in a better way approximated by using linear elements of different lengths and slopes depending on the nature of infiltration rates. The mathematical expression of time varying infiltration rate approximated by this scheme is given by:
where rij and cij are the slope and intercept of the jth line element of the infiltration rate for the ith basin and K is the number of elements. Infiltration rate is used for modeling groundwater flow in unsaturated zone. Diaw et al;(2003), Manglik et al; (1997), have used this scheme of approximation of time varying infiltration rate for simulation of groundwater flow in variably saturated aquifer system.Fig 1.1: Approximation of time varying infiltration rate
1.2.4 RECHARGE
The process of entering of infiltrated water into the saturated zone. The rate of recharge is defined as the volume of water which enters into the saturated zone through per unit cross sectional area and per unit time. This rate of recharge largely depends on the infiltration rate and follow pattern of variation more or less similar to that of infiltration rate with some time lag and less intensity. Just like infiltration rate is approximated the recharge rate can be approximated also by using linear element of different lengths and slopes depending on the nature of variation of recharge rates.
1.2.5 LEAKAGE
The leakage takes place between two adjacent aquifers through apportion of semi permeable boundary due to difference in hydraulic pressure. The leakage rate is defined as the volume of water leaving or entering the aquifers through a unit cross sectional area of semi permeable boundary in unit time. Leakage from an overlying or underlying aquifer with piezometric head, Фc into aquifer with piezometric head Ф is given by: Where k and b are the hydraulic conductivity and thickness respectively of the semi permeable layer.
1.2.6 WITHDRAWAL
The withdrawal of groundwater is carried out by pumping. It is also takes place naturally at the interface of aquifer and surface water body having water level lower than the level of saturation. The pumping rate is defined as the volume of water withdrawal from a unit cross sectional area of the aquifer in unit time. Both leakage and withdrawal rates can also be approximated by the schemes expressed by equation (2). In this case shapes of leakage sites and the wells should be in the rectangular form.
1.2.7 AQUIFERS
Aquifers are the geological formations which can store water as well as allow the flow of significant amount of water through their pores under ordinary field conditions. In these formations pores are interconnected to allow the flow of groundwater. Examples are sand, sandstone, weathered rocks, fractured rocks etc. If the aquifer is bounded by two impermeable formations from top and bottom is called a confined aquifer. Water level in a piezometer penetrating a confined aquifer is referred to as the piezometeric surface. The pressure at the piezometric surface is equal to the atmospheric pressure. Water level in a well penetrating a confined aquifer represent piezometric surface. If the piezometric surface is above the ground surface, then a well located in this region will discharge groundwater on the ground surface without pumping. This segment of confined aquifer is known as artesian aquifer and the well is known as artesian well. If the upper boundary of the aquifer is the water table or phreatic surface is called an unconfined aquifer. The pressure at the water table is equal to atmospheric pressure. The pressure above the water table is less than the atmospheric pressure whereas below the water table it is more than the atmospheric pressure.
An unconfined aquifer or part of it that rest on a semi pervious layer is a leaky unconfined aquifer. Confined aquifer that has at least one semi pervious formation is called a leaky confined aquifer. Perched aquifers are special cases of unconfined aquifers in which a small impervious layer supports a groundwater body above the main water table. Different types of aquifers are shown in figure 3. The same layer of an aquifer can represent different form of aquifers depending on the prevailing physical conditions. As shown in the figure 3, the piezometric surface within the a-b segment of the lower confined aquifers falls below the top of the aquifer. In this segment, piezometric surface and water table coincides and the aquifers become unconfined. The c-d segment represents as an artesian aquifer and the e-f segment as a leaky confined aquifer. Other than being the source of fresh water, aquifers are used for other purposes of groundwater resource management such as storage reservoir, as a filter for water of inferior quality injected into the aquifers etc. The geological formation that allows the flow of water at very low rate compare to the aquifer is called Aquitard. The formation that contains water but is incapable of transmitting significant quantities of groundwater under ordinary field conditions is referred to as Aquiclude. Clay is an example of aquiclude. The geological formation that neither store water nor allow the flow of water through them is called Aquifuge. Hard rock formations such as granites and basalts which are free from fractures,faults or weathering are example of Aquifuge
1.3 Location of the Study Area.
The location of the study area is Atan in Ado- Odo/Ota Local Government Area of Ogun State Southwest Nigeria. The Local Government lies at longititude 006o.40.228 and latitude 003o05.397 .
Fig 1.5: Geological Map of Ogun State showing the study Area
1.4 Aim and Objectives
The aim of this research work is to determine the groundwater potential in Atan.
The objectives of the study are:
To determine the availability of groundwater resources in Atan using geoelectrical resistivity method.
To determine the depth of groundwater of the study area using vertical electrical sounding.
To determine the geological structure of the study area.
1.5 Scope of the Study
The scopes of the study are:
To analyze the structure of underground characteristics.
To analyze the resistivity data of the study area by engaging the 2-D Resinverse software.
1.6 Justification of the study.
More geophysical imaging research or study of the subsurface earth need to be done adopting the use of geoelectrical resistivity method. This is because geoelectrical resistivity method has proven relevant and the reliability of the method is not in doubt. The method can probe deep into the earth and therefore has the ability to detect the depth to groundwater layer and to determine the geological structure of
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MINERALOGICAL CHARACTERISTICS OF ZANKAN LITHIUM ORE-A CASE STUDY OF PITS 1 AND 2
Abstract:
Background: The demand for lithium, a critical element in modern battery technologies, has surged with the increasing prevalence of electric vehicles and renewable energy systems. Zankan, a significant lithium ore deposit, holds potential importance in the global lithium supply chain. This study focuses on the mineralogical characteristics of Zankan lithium ore, specifically within Pits 1 and 2, aiming to enhance our understanding of the ore composition and provide valuable insights for future extraction and processing strategies.
Methods: A detailed mineralogical investigation was conducted utilizing a combination of analytical techniques. Samples were collected from different layers within Pits 1 and 2 of the Zankan lithium ore deposit. X-ray diffraction (XRD) analysis was employed to identify the mineral phases present, while scanning electron microscopy (SEM) allowed for the examination of microstructures and mineral associations. Chemical composition analysis, including energy-dispersive X-ray spectroscopy (EDS), provided insights into elemental distributions within the ore.
Results: Preliminary findings reveal a complex mineral assemblage within the Zankan lithium ore, including lithium-bearing minerals such as spodumene, lepidolite, and petalite, as well as associated minerals like quartz, feldspar, and mica. The mineralogical composition varied across different layers and depths within Pits 1 and 2, indicating potential spatial heterogeneity in lithium concentration and ore quality.
Conclusion: This study contributes to the understanding of the mineralogical characteristics of Zankan lithium ore in Pits 1 and 2. The identification of lithium-bearing minerals and their spatial distribution has implications for ore processing, extraction efficiency, and overall resource assessment. These insights are crucial for informing sustainable mining practices and optimizing lithium recovery processes. Further research integrating geochemical analyses and mineralogical modeling is recommended to enhance our comprehension of the Zankan lithium ore deposit and its economic viability.
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After paying the appropriate amount (#5,000) into our bank Account below, send the following information to
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BANK ACCOUNTS
Account Name: AMUTAH DANIEL CHUKWUDI
Account Number: 0046579864
Bank: GTBank.
OR
Account Name: AMUTAH DANIEL CHUKWUDI
Account Number: 3139283609
Bank: FIRST BANK
FOR MORE INFORMATION, CALL:
08068231953 or 08168759420
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RESEARCH TOPICS IN GEOTHERMAL ENERGY
1. Comparative analysis of geothermal energy potential in different regions.
2. Optimization of binary cycle power plants for geothermal energy.
3. Geothermal reservoir characterization using advanced exploration techniques.
4. Life cycle analysis of geothermal power generation systems.
5. Assessment of the environmental impact of geothermal power plants.
6. Geothermal heat pump technology: A sustainable heating and cooling solution.
7. Geothermal energy and its role in mitigating climate change.
8. The integration of geothermal energy with other renewable sources in hybrid systems.
9. Enhanced geothermal systems (EGS) for expanding geothermal resources.
10. Utilization of geothermal energy for greenhouse heating.
11. Assessment of geothermal potential for direct heating applications in urban areas.
12. Geothermal energy for industrial processes: A feasibility study.
13. Geothermal energy in developing countries: Challenges and opportunities.
14. The socio-economic impact of geothermal projects on local communities.
15. Innovations in geothermal drilling technologies.
16. Geothermal energy and its potential contribution to national energy security.
17. Geothermal reservoir management strategies for sustainable power production.
18. Geothermal energy and its integration into smart grids.
19. Comparative analysis of geothermal and solar energy in specific regions.
20. Geothermal energy in volcanic regions: A case study.
21. The role of geothermal energy in rural electrification.
22. Geothermal resource mapping using GIS and remote sensing.
23. Geothermal power generation and its impact on geophysical conditions.
24. The effectiveness of government policies in promoting geothermal energy.
25. Microbial communities in geothermal environments: Implications for power plants.
26. Geothermal energy and its potential as a source of direct-use applications.
27. Geothermal power generation using abandoned oil and gas wells.
28. Geothermal reservoir stimulation techniques for enhanced performance.
29. Environmental monitoring and mitigation strategies for geothermal projects.
30. Geothermal energy and its role in sustainable agriculture.
31. Economic analysis of geothermal power generation compared to fossil fuels.
32. Geothermal energy and its contribution to grid stability.
33. Integration of geothermal energy in urban planning and development.
34. Geothermal energy and its compatibility with water resource management.
35. Geothermal energy education and awareness programs: A case study.
36. Geothermal exploration in geologically complex terrains.
37. Geothermal energy as a tool for poverty alleviation in rural areas.
38. Comparative study of geothermal and hydropower in specific geographical areas.
39. Seismicity and induced seismicity in geothermal areas: A risk assessment.
40. The potential of abandoned mines for geothermal energy extraction.
41. Geothermal energy and its role in district heating systems.
42. Geothermal energy and its impact on biodiversity in hot spring ecosystems.
43. Geothermal energy policy analysis: A global perspective.
44. Geothermal energy and its application in desalination processes.
45. Geothermal energy and its role in sustainable tourism.
46. Geothermal energy and its use in mineral extraction processes.
47. Geothermal energy for space heating in cold climates.
48. Geothermal energy and its impact on land use and vegetation.
49. Geothermal energy and its potential for hydrogen production.
50. Exploration of unconventional geothermal resources: Hot dry rock (HDR) systems.
51. Geothermal energy and its potential for industrial cogeneration.
52. Geothermal power plant retrofitting for improved efficiency.
53. Assessment of geothermal potential in geysers and geothermal springs.
54. Geothermal energy and its role in disaster resilience.
55. Geothermal energy storage technologies and their feasibility.
56. Geothermal energy and its impact on air quality.
57. Techno-economic analysis of geothermal power projects.
58. Geothermal energy and its role in sustainable urban development.
59. Geothermal energy and its contribution to electrification in remote areas.
60. Geothermal power generation from low-temperature resources.
61. Geothermal energy exploration in volcanic island settings.
62. Geothermal energy and its role in supporting intermittent renewable sources.
63. Geothermal energy and its potential for heating in the mining industry.
64. The impact of geothermal projects on indigenous communities.
65. Geothermal energy and its potential for carbon capture and storage.
66. Geothermal energy and its role in mitigating land subsidence.
67. Geothermal resource assessment and mapping using machine learning.
68. Geothermal energy and its potential for greenhouse gas emission reduction.
69. Geothermal energy utilization in the tourism and hospitality sector.
70. Geothermal energy and its impact on groundwater resources.
71. Geothermal energy and its potential for providing baseload power.
72. Geothermal energy and its integration into eco-industrial parks.
73. Geothermal energy and its role in disaster recovery.
74. Geothermal energy and its potential for mineral extraction in geothermal brines.
75. Geothermal energy and its contribution to meeting sustainable development goals.
76. Geothermal energy and its role in supporting electric vehicle charging infrastructure.
77. Geothermal energy and its potential for heat storage in urban areas.
78. Geothermal energy and its impact on indigenous knowledge and practices.
79. Geothermal energy and its role in sustainable water resource management.
80. Geothermal energy and its potential for reducing energy poverty.
81. Geothermal energy and its integration into the circular economy.
82. Geothermal energy and its role in ecosystem restoration projects.
83. Geothermal energy and its potential for aquaculture.
84. Geothermal energy and its impact on soil health and fertility.
85. Geothermal energy and its potential for industrial process heat.
86. Geothermal energy and its role in supporting resilient infrastructure.
87. Geothermal energy and its potential for rural electrification through microgrids.
88. Geothermal energy and its impact on indigenous flora and fauna.
89. Geothermal energy and its role in sustainable forestry practices.
90. Geothermal energy and its potential for direct air capture of CO2.
91. Geothermal energy and its integration into sustainable transportation systems.
92. Geothermal energy and its role in sustainable waste management.
93. Geothermal energy and its potential for reducing reliance on imported fuels.
94. Geothermal energy and its impact on cultural heritage preservation.
95. Geothermal energy and its role in supporting sustainable fisheries.
96. Geothermal energy and its potential for community-led energy projects.
97. Geothermal energy and its integration into disaster preparedness strategies.
98. Geothermal energy and its contribution to water desalination in arid regions.
99. Geothermal energy and its potential for supporting resilient food systems.
100. Geothermal energy and its role in promoting gender equality in the energy sector.
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