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All Journal Indonesian Journal of Innovation and Applied Sciences (IJIAS)
Adeleye, Adeniyi Olarewaju
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Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Industrial & Manufacturing Engineering Mathematics Social Sciences

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Investigation of Erosion-Induced Groundwater Pollution in Selected Wells Around Kwarin Awaja, Birnin Kudu, Nigeria Amoo, Afeez Oladeji; Adeleye, Adeniyi Olarewaju; Ijanu, Emmanuel Madu; Mallam, Ibrahim; Asaju, Catherine Iyabode; Amoo, Florence Kemi; Adeleye, Olukemi; Amoo, Nureni Babatunde; Salisu, Shehu Abdullahi
Indonesian Journal of Innovation and Applied Sciences (IJIAS) Vol. 5 No. 2 (2025): June-September
Publisher : CV. Literasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47540/ijias.v5i2.1997

Abstract

Soil erosion in semi-arid regions contributes significantly to groundwater contamination, particularly through sediment-laden runoff entering shallow aquifers. The intensification of rainfall events has accelerated surface erosion, leading to increased transport of sediments and contaminants into shallow wells, which serve as the primary water source for many households. This study investigated the extent and mechanisms of groundwater contamination in twelve selected wells around Kwarin Awaja, focusing on changes in water quality before and after major rainfall events. Water samples were analyzed for turbidity, electrical conductivity (EC), pH, coliform bacteria, nitrates, and heavy metals (cadmium and chromium). Results showed significant increases in turbidity, nitrates, total dissolved solids, chloride, sulphate, and electrical conductivity after rainfall, indicating erosion-induced pollutant infiltration. Paired sample t-tests revealed significant post-rainfall increases in turbidity (up to 12.1 NTU) and EC (up to 675 µS/cm), with values exceeding national standards such as Nigeria Standards for Drinking Water Quality (NSDWQ) in wells closest to active erosion sites. Pearson correlation analysis showed strong associations between proximity to erosion features and elevated pollution indicators. Microbial contamination, absent before rainfall, was detected in several wells after rainfall events. The findings highlight the vulnerability of shallow groundwater to erosion-driven pollution and underscore the need for targeted interventions to protect water quality in erosion-prone rural environments.
Investigation of Hydraulic Characteristics and Fluid Dynamics in Sand Samples from the Osun River in Osogbo, Nigeria Amoo, Afeez Oladeji; Adamu, Suleiman Bashir; Adeleye, Adeniyi Olarewaju
Indonesian Journal of Innovation and Applied Sciences (IJIAS) Vol. 5 No. 1 (2025): February-May
Publisher : CV. Literasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47540/ijias.v5i1.1605

Abstract

Understanding the natural flows in porous media with specific hydraulic characteristics is crucial for advancing science and engineering. This study examines the hydraulic properties and fluid dynamics of sand samples collected from eight locations along the Osun River bed at five-meter intervals in November 2023. Significant variations in hydraulic characteristics were identified by comparing the findings with international soil classification standards. The effective grain size ranged from 0.20 mm to 0.32 mm, with most samples between 0.30 mm and 0.31 mm. Sample F had the smallest grain size, indicating finer sand. Flow velocities varied from 1.57 cm/s to 2.41 cm/s, with the highest observed at locations B and E. Flow rates ranged from 1.23 × 10² cm³/s to 1.89 × 10² cm³/s, also highest at B and E. Reynolds numbers ranged from 1.39 × 106 to 8.58 × 106, indicating transitions from laminar to turbulent flow. Friction factors ranged from 7.46 × 106 to 45.85 × 106, with higher values at location A, indicating greater resistance to flow. Hydraulic gradients ranged from 1.09 to 1.83, and hydraulic conductivities were between 1.14 × 10-² cm/s and 1.43 × 10-² cm/s, with the highest observed at location A. The results align with recent research showing that coarser sands exhibit higher hydraulic conductivities and flow rates, whereas finer sands demonstrate greater resistance. The study underscores the importance of monitoring friction factors, flow velocity, flow rate, and Reynolds numbers to manage potential environmental hazards and water seepage through dams.
Co-Authors Adamu, Suleiman Bashir Adeleye, Olukemi Amoo, Afeez Oladeji Amoo, Florence Kemi Amoo, Nureni Babatunde Asaju, Catherine Iyabode Ijanu, Emmanuel Madu Mallam, Ibrahim Salisu, Shehu Abdullahi