article · American Journal of Biological and Environmental Statistics
Infiltration of domestic waste leachate presents environmental and geotechnical risks in urbanising areas such as Auchi Metropolis. An assessment of lateritic soils from Aviele, Jattu, and Uchi reveals predominantly sandy profiles with high sand content. Laboratory testing indicates consistent optimum moisture levels across sites, though soils from Uchi exhibit higher maximum dry density and greater load-bearing capacity. Hydraulic conductivity remains low across all locations, and swelling potential is negligible to low. Meanwhile, analysis of local domestic waste leachate confirms acidic characteristics paired with substantial organic and microbial concentrations. Exposure to this leachate alters soil consistency limits, elevates permeability, and threatens long-term subsurface stability. These geotechnical and chemical shifts highlight the vulnerability of local ground conditions, underscoring the necessity for engineered containment systems, robust geotechnical monitoring, and upgraded municipal waste management strategies to prevent structural failure and environmental contamination.
Uncontrolled domestic waste creates toxic fluids that seep into surrounding ground. When this leachate degrades the soil beneath buildings and roads, it can weaken civil infrastructure and pollute underground water reserves. Understanding how leachate alters local soil characteristics provides urban authorities and civil engineers with the evidence needed to design safer landfill sites, protect groundwater, and safeguard foundation stability in expanding metropolitan areas.
This early-stage research provides baseline geotechnical data that municipal authorities, civil engineering consultancies, and landfill developers can use to design engineered containment liners and monitoring programmes. While the work demonstrates how leachate degrades specific local soils, it does not detail a proprietary product or ready technology. Real-world application depends on integrating these findings into site selection criteria, barrier design standards, and local environmental management protocols.
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Domestic waste leachate infiltration has become a growing environmental and geotechnical concern in rapidly urbanizing regions such as Auchi Metropolis. This study investigates the influence of domestic waste leachate on the geotechnical behavior of lateritic soils collected from Aviele, Jattu, and Uchi. Standard BS 1377 and ASTM laboratory procedures were used to evaluate soil index properties, compaction characteristics, permeability, and swell potential, alongside chemical and microbial characterization of the leachate. The soils were predominantly sandy (76–84%) and classified as A-2–4 to A-3 (AASHTO) and SP (USCS). Compaction tests showed similar optimum moisture contents of 14.36–14.40%, with maximum dry densities ranging from 1.65 g/cm 3 for Aviele and Jattu to 1.85 g/cm 3 for Uchi, indicating stronger load-bearing capacity at Uchi. Permeability coefficients ranged from 1.01 × 10 -7 m/s (Jattu) to 3.51 × 10 -7 m/s (Uchi), demonstrating low but variable hydraulic conductivity, while swell tests revealed minimal expansion, with Aviele recording 2.4% and both Jattu and Uchi showing 0%. Leachate analysis indicated acidic conditions and high organic and microbial loads, suggesting potential for chemical alteration and biological degradation of soil structure. Overall, results show that leachate exposure increases permeability, alters consistency limits, and may reduce long-term soil stability. The study emphasizes the need for improved waste management, engineered containment, and geotechnical monitoring to mitigate leachate-related environmental and structural risks in Auchi Metropolis.
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DOI: 10.11648/j.ajbes.20261203.12
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