FUPRESpace
Welcome to FUPRESpace, The Institutional Repository of Federal University of Petroleum Resources. A collection of theses, articles, books, videos, images, lectures, papers, data sets, and all types of digital content originating from the Federal University of Petroleum Resources, Nigeria. This repository is managed by the University Library
Communities in DSpace
Select a community to browse its collections.
- This houses intellectual collections of Biochemistry Department
- This contains the intellectual works of the faculty members in the College of Computing
- This contains the intellectual works of the faculty members in the College of Engineering and Technology
- This contains the intellectual works of the faculty member in the College of Maritime and Offshore Studies.
- This contains the intellectual works of the faculty members in the College of Science
Recent Submissions
Depiction of Aquifer Potential and Vulnerability Mapping: A Case Study of Delta North, Southern Part of Nigeria, Using Geophysical Approach.
(Discovery Nature, 2025) Eyankware, M.O.; Osisanya, O.W.; Akakuru, O.C.; Odesa, G.E.; Okanigbuan, P.N.; Ukor, K.P.; Oghenevovwero, E.E.; Chukwusa, F.O.
In order to identify the aquifers, characterize their geometric properties, and determine their susceptibility to contamination by surface contaminants, a detailed
hydrogeophysical investigation of the aquifers of the study area was conducted. The study area was subjected to fifteen (15) vertical electrical soundings (VES) with a Schlumberger array configuration with a maximum electrode separation of 200 m. Curve matching methods and iterative computer modeling were combined to process the VES data. Parameters estimated are aquifer thickness, longitudinal conductance (S), transverse unit resistance (Tr), average longitudinal resistance (ρL), aquifer conductivity (ῼ−1), hydraulic conductivity (K), and transmissivity (T), and their corresponding estimated values, which vary across the study area, range from 1.63 to 103.83 m, 0.02 to 0.05, 0 to 122169.9 ohms, 0 to 3406.4, 0.000037 to 0.001126, 0.0538 to1.13x1023m2/day, 0 to 1.85x1023m2/day, respectively. Deductions from S. revealed that the study area is prone to contamination from the study. Further findings from groundwater modeling, hydraulic conductivity, and transmissivity suggested that the southwestern part of the study area showed more groundwater prospects when compared to other parts of the study area. Within the study, it was observed that curve Q is the most dominant curve within the study area.
Pollution Loads and Ecological Risk Assessment of Heavy Metals in the Urban Soil from various locations throughout Bayelsa State, Nigeria.
(African Journals Online, 2026-01-03) OSISANYA, W.O.; AGHO, I.F.; NEVOH, G.O.; AKPEJI, H.B.; JOEL, E.S.
The detection of heavy metals (HM) in soil has emerged as a significant issue amid growing environmental awareness, revealing the intricate interplay between anthropogenic influences and natural elements that impact our terrestrial ecosystems. Consequently, the objective of this paper was to evaluate the Pollution
Loads and Ecological Risk Assessment of Heavy Metals in the Urban Soil from various locations throughout Delta State, Nigeria using appropriate standard procedures. Data obtained show that the mean and standard deviation concentrations of heavy metals in soil samples within the study area were Zn (19.08 and 9.19)mg/kg; Cr(13.92 and 6.22)mg/kg, Cu (10.56 and 4.95)mg/kg; Pb(4.69 and 1.99)mg/kg, Cd (2.045and 1.86)mg/kg, Co(9.524and 4.49)mg/kg, Ni(3.23and 1.36)mg/kg and As (0.003(mg/kg) respectively An ecological risk assessment was conducted in the specified study area, noted for its modified soil conditions. Findings obtained from several heavy metal indices, namely the Potential Ecological Risk Assessment (ERI), Geoaccumulation Index (Igeo), Degree ofContamination (Cdeg), and Nemerow Pollution Index (PNI), revealed that considerable human activities—like automobile maintenance, waste disposal, and farming practices—are the main sources of heavy metals in the soil of the examined area. Nevertheless, the information from Igeo was inconsistent with the conclusions drawn from the ERI, which proposed that the soil samples were not contaminated. Furthermore, Cdeg assessments suggested that the level of contamination in the soil was minimal for agricultural and farming purposes being the major occupation of the inhabitants.
Modeling of soil quality in Umonyeche Milieu Southern Region of Nigeria using Heavy Metal Index and Spatial Distribution.
(British Journal of Multidisciplinary and Advanced Studies (BJMAS)., 2026) Osisanya, W.O.; Agho, I. F.; Auta, T.A.; Ogungbade, O.E.
This study examined the presence of heavy metals (HMs) in soil samples collected from Umuonyeche in Owerri, Imo State, southeastern Nigeria. Metal concentrations were determined using Atomic Absorption Spectroscopy. To assess pollution levels, multiple indices were applied, including the Potential Ecological Risk Index (ERI), Geo-accumulation Index (Igeo), Contamination Degree (Cdeg), and Nemerow Pollution Index (PNI). Statistical tools such as the
Pearson correlation matrix and Principal Component Analysis (PCA) were also used to evaluate the relationships among metals and identify their possible sources. The results showed that heavy metal contamination in the study area largely originates from anthropogenic activities, including automobile repairs, solid waste disposal, and agricultural practices. While the ERI suggested that the soil is mostly unpolluted, the Igeo results indicated the influence of human activities,
highlighting a contrast between the two indices. The Cdeg values revealed a low level of contamination across the samples. Additionally, PNI assessments categorized the soils as 25.8% clean, 28.2% slightly clean, and 10.7% moderately polluted. Findings from PCA and the Pearson correlation matrix further onfirmed that the heavy metals present in the soil are primarily linked
to human activities.
Integrating Multivariate Modelling and Health Risk Assessment to Decipher Groundwater Quality Dynamics in A Rapidly Urbanizing Basement Terrain of Akure, Southwestern Nigeria.
(University of Technology Sarawak (UTS) Publisher / UTS Press, 2026) Osisanya, W.O.; Akakuru, O.C.; Eyankware, M.O.; Aigbadon, G.O.; Ukor, K.P.
Groundwater constitutes a critical source of domestic water in Akure, southwestern Nigeria, yet rapid urbanization and anthropogenic activities increasingly hreaten its quality. This study evaluated the hydrogeochemical characteristics and health risks associated with groundwater in the crystalline Basement Complex terrain of Akure. Twentyone groundwater samples from motorized boreholes and hand-dug wells were analyzed for physicochemical parameters, major ions, and heavy metals to assess water quality and potential health implications. Hydrogeochemical facies classification shows that 77.3% of the samples fall within Geochemical Zone IV (strong acids exceeding weak acids), while 22.7% belong to Zone III (weak acids exceeding strong acids). The dominant ionic order (Mg²⁺ > Na⁺ + K⁺ > HCO₃⁻ > Cl⁻ > SO₄²⁻ > Ca²⁺) suggests that groundwater chemistry is primarily controlled by silicate weathering and carbonate dissolution
processes. Water Quality Index (WQI) results indicate that several groundwater sources require treatment prior to consumption. Contamination
Factor (CF) and Geoaccumulation Index (Igeo) reveal generally low contamination levels, although the Metal Pollution Index (MPI) highlights localized heavy-metal enrichment. Multivariate statistical analysis using Principal Component Analysis (PCA) extracted three principal components (PC1–PC3) that explain the dominant hydrogeochemical processes and differentiate between geogenic contributions and minor anthropogenic inputs. Health risk assessment indicates that exposure to Pb, Cd, and Ni through groundwater ingestion may pose potential non-carcinogenic risks, particularly for children, as reflected by elevated Hazard Index (HI) values. Overall, the findings highlight emerging groundwater quality concerns in the rapidly urbanizing Akure region and underscore the need for regular monitoring, improved groundwater management, and sustainable watersafety strategies in crystalline basement aquifers. The study contributes to
improved understanding of groundwater quality dynamics in rapidly urbanizing crystalline basement aquifers.
Geochemical Assessment of Bottom Sediments of Water Bodies at Crude Oil Exploration Station in Delta State, Nigeria.
(Discovery Nature, 2025) Abolodje, O.D.; Ibe, K.A.; Osisanya, W.O.; Ibitoye, T.A.; Saleh, A.S.
Understanding the occurrence, composition, and distribution patterns of aliphatic hydrocarbons (AHCs) are crucial signals for identifying the anthropogenic
contributions and sources of AHCs present in the environment. Therefore, this study focused on analyzing the concentrations, distribution pattern, compositional patterns, and sources of AHCs found in crude oil and sediments collected from the Udu, Ethiope East, and Ughelli North Local Government Areas. A total of nine (09) crude oil samples and ten (10) sediment samples were obtained from the designated study area. The analysis of AHC concentrations in these identification was performed by gas chromatography with Flame Ionization Detector (GC-FID) using hexane/dichloromethane mixture and further purification in a column filled with silica gel and alumina. The AHC in the crude oil samples were observed to be between 450 and 43657 mg/kg, with an average of 2859.11+7884.68mg/kg. The sediment samples on the other hand contained concentrations of AHC that varied between 10.8 and 470mg/kg with a mean concentration of 102.74 +2.85 mg/kg. The UNEP guideline limit of AHCs in sediments is 10 mg/kg, yet they were greater than those. The AHCs of the crude in the Ethiope East Local Government Area were detected to be 3071 +53.3mg/kg. Udu Local Government Area on the other hand reported concentrations of 14999 +/-314.3 and 155027 +/-291.7mg/kg. AHCs of the Ughelli North Local Government Area were 1149±69.7, 21686±3352.8, 14099±147.7, 450±17.3, 1114±19.6, and 43657±2185.3 mg/kg. Regarding sediment, the AHCs recorded were 12.7±0.3 and 18.8±0.6 mg/kg for Ethiope East Local Government Area, while Udu Local Government Area presents recorded values of 17. The results of the ANOVA reveal a significant difference (p<0.05) in the levels of AHCs found in both crude oil and sediment samples. Furthermore, the regression analysis indicates a minimal or nonexistent correlation between AHC concentrations in crude oil and those in sediment. Notably, the predominant hydrocarbons (MH) identified in the samples of crude oil and sediment were characterized by even carbon numbers, including C8, C16, C18, C32, C34, C36, and C38.