Hydrogeochemistry and Water Quality Index for Groundwater Sustainability in the Komadugu-Yobe Basin, Sahel Region

Shuaibu, Abdulrahman; Kalin, Robert M.; Phoenix, Vernon; Banda, Limbikani C.; Lawal, Ibrahim Mohammed

doi:10.3390/w16040601

Cited by 6 publications

(1 citation statement)

References 74 publications

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“…This is critical for developing appropriate In addition to external influences, the physical properties of the material structure are internal elements that play an important role in slope stability, as the changes in saturation states of the soil due to seepage fields impact both local and overall slope stability [17,21]. Additionally, groundwater table variations could have considerable impact on the slope stability due to its time domain [22,23]. Another way to improve the performance of railway embankment slopes is to examine the quantitative relationships between parameters regulating safety coefficients [24].…”

Section: Introductionmentioning

confidence: 99%

Prediction of Railway Embankment Slope Hydromechanical Properties under Bidirectional Water Level Fluctuations

Aliyu,

Xu,

Bello

et al. 2024

Applied Sciences

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Railway embankment slopes are exposed to natural hazards such as excess rainfall, floods, earthquakes, and lake water/groundwater level variations. These are generally considered during the design, construction, and maintenance periods of the embankment. In this study, combined laboratory test methods and a computational approach were applied to assess the effect of groundwater level changes on the railway embankment. The Plackett–Burman (PBD), Box–Behnken design response surface methodology (BBD-RSM), and an artificial neural network (ANN) were used to predict the behavior of the embankment soil hydromechanical properties to determine the integrity of the embankment as water level fluctuates under varied seasonal conditions. The results show that the seepage line is concave during the rising water level (RWL) period, and the railway slope’s static stability factor surges and then stabilizes. Further analysis found that the slope’s stability is largely affected by some of the hydromechanical properties of the soil embankment material, such as the internal friction angle (ϕ), soil density (ρs), and cohesion (c). The second-order interaction factors c x s, x s, and s2 also affect the stability factor. It was observed that the four most sensitive parameters under both falling water level (FWL) and RWL conditions are ϕ, ρs, c, and rate of fall/rise in water level (H). The statistical evaluation of the RSM model produced R2 values of 0.99(99) and 0.99, with MREs of 0.01 and 0.24 under both RWL and FWL conditions, respectively, while for ANN, they produced R2 values of 0.99(99) and 0.99(98), with MRE values of 0.02 and 0.21, respectively. This study demonstrates that RSM and ANN performed well under these conditions and enhanced accuracy, efficiency, iterations, trial times, and cost-effectiveness compared to full laboratory experimental procedures.

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Section: Introductionmentioning

confidence: 99%

Prediction of Railway Embankment Slope Hydromechanical Properties under Bidirectional Water Level Fluctuations

Aliyu,

Xu,

Bello

et al. 2024

Applied Sciences

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Seasonal variation of groundwater quality in a basement complex geology of Ado Ekiti Nigeria using water quality index model

Kayode,

Tomori,

Okoronkwo

et al. 2024

J.Umm Al-Qura Univ. Appll. Sci.

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Ado Ekiti is one of the Southwestern regions in Nigeria underlained with basement complex geology. Urbanization and growing population leading to increase in various activities are dominant contributors of groundwater pollutants in the area which affect the hydrological system. The research aimed to determine the suitability of groundwater for consumption and domestic uses and also provide information about groundwater quality in bedrock lithologies using water quality index. Samples were taken from two major sources, boreholes and wells, covering all of the study area's major lithologies. The number of samples was based on the spread of the individual rock with charnockites having 15 samples, porphyritic having 47 samples, migmatite having 37, and undifferentiated granite having the least with 5 samples. Analysis of some of the water parameters such as hydrogen ion concentration (pH), electrical conductivity (EC), Salinity, total dissolved solids (TDS), and dissolved oxygen (Do) was done in situ using standard equipment while other were determined using standard methods in the laboratory. The results underwent descriptive statistical analysis to determine the mean, minimum, maximum, standard deviation, and variance. The variance in the result showed the different interactions of the host rock and the groundwater. The groundwater was a little acidic in majority of the water samples in all the rock types. The mean values of EC, TDS, DO, alkalinity, and turbidity were mostly within the WHO acceptable limit except for total hardness (TH) which recorded high mean values in almost all the rock types. The ion concentration revealed that calcium and magnesium ions were dominant in the cationic species while phosphate and chloride ions were dominant in the anionic species. This indicates the geogenic origin and a reflection of bedrock dissolution as a result of the water and underlying rock interaction. Water quality index values were gotten and characterized into; excellent, very good, good, poor, very poor, and unfit for drinking. Differential weathering, influenced by differences in mineralogical and chemical composition, occurs within each rock unit, leading to localized groundwater occurrence and variations in the chemistry of groundwater based on geological formations. The water quality was observed to be mostly poor in all the rock types which may be attributed to the near to ground protective capacity of the basement complex.

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Deciphering hydrogeochemical evolution in the multilayered Ilhas-São Sebastião aquifer system, Brazil: Implications for groundwater resources management

Moitinho,

da Silva Barbosa,

Debruyne

et al. 2024

Groundwater for Sustainable Development

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Hydrogeochemistry and Water Quality Index for Groundwater Sustainability in the Komadugu-Yobe Basin, Sahel Region

Cited by 6 publications

References 74 publications

Prediction of Railway Embankment Slope Hydromechanical Properties under Bidirectional Water Level Fluctuations

Prediction of Railway Embankment Slope Hydromechanical Properties under Bidirectional Water Level Fluctuations

Seasonal variation of groundwater quality in a basement complex geology of Ado Ekiti Nigeria using water quality index model

Deciphering hydrogeochemical evolution in the multilayered Ilhas-São Sebastião aquifer system, Brazil: Implications for groundwater resources management

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