Evaluation de la vulnérabilité spécifique aux nitrates (NO&lt;sub&gt;3&lt;/sub&gt;) des eaux souterraines du District d’Abidjan (Sud de la Côte d’Ivoire)

Deh, SK; Kouame, KJ; Saley, MB; Tanoh, Kjj; Anani, Eka; Signo, KH; Jourda, JP; Barthélemy, Jean

doi:10.4314/ijbcs.v6i3.40

Cited by 12 publications

(12 citation statements)

References 11 publications

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“…It should be noted that the pumping boreholes and wells remained in operation during the 1978 piezometric surveys. The 1978 simulated piezometric map shows that groundwater circulates from north to south and from north to east, which confirms the findings of Deh [12] and Kouame [19].…”

Section: Groundwater Flow Modelsupporting

confidence: 84%

“…Current evaporation and runoff have been taken into account in the recharge calculation. This value varies from 150 to 422 mm/a according to recent studies of Deh [12] and Kouame [19]. Here, the climate change effect has not been considered because, even if the impact can be strong [50], the resolution of forecast models and the urbanization scenario are beyond the scope of this paper.…”

Section: Model Calibration and Validationmentioning

confidence: 99%

“…Adding the vertical and horizontal transport time results yields a global transport time ranging from 38 to 47 years for dissolved benzene. At these two sites (N'Dotré and Anador), Deh [12] obtained a global transport time for PCE between 36-60 years. The difference between these times could be explained by the characteristics of hydrocarbon contaminants being different, and among other differences, each having distinct viscosity and density traits.…”

Section: Overall Transport Time Of Dissolved Benzenementioning

confidence: 99%

“…Additionally, it was necessary to use data from the literature and archives, such as the piezometric data from 1978. These same data were used to model the water table of the Abidjan aquifer in previous studies [12,19,51]. Consequently, the proposed numerical prediction models can serve as predictive tools for the management and protection of the Abidjan aquifer.…”

Section: Polluted and Threatened Boreholesmentioning

confidence: 99%

“…Based on the available data, the present model is very innovative in the way that it has used a compilation of study done on the Abidjan District aquifer [12,19,24,28,52] by many authors. Although, for example Kouamé [28] only modeled the zone of the Landfill of Akouédo, Jourda [24] did not do a numerical modeling of the Abidjan District, and Kouassi [52] modeled the geometry of the aquifer.…”

Section: Pollution Issues and Perspectivesmentioning

confidence: 99%

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Assessment of the Potential Pollution of the Abidjan Unconfined Aquifer by Hydrocarbons

et al. 2019

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A study of the unconfined Continental Terminal aquifer in Abidjan District, located in a coastal sedimentary basin in Southern Côte d'Ivoire (West Africa), is conducted. This aquifer is the principal source of drinking water for the city of Abidjan. The water quality of the aquifer is affected by anthropogenic sources of pollution, such as scattered deposits of solid and liquid waste of all kinds. Additionally, the proliferation of gas stations, including potential tank leakage, must be considered in the event of an accident. To ensure the effective protection and management of the Abidjan groundwater, this work assesses the groundwater contamination risk of the Abidjan aquifer by hydrocarbons such as benzene. To achieve this objective, a numerical groundwater model that included the geological and hydrogeological data of the Abidjan aquifer was constructed with FEFLOW 7.1. A predictive simulation of groundwater flow coupled with the transport of dissolved benzene deposited on the soil surface at the N'Dotré and Anador gas stations was performed. The initial concentrations of dissolved benzene were 43.12 mg/L and 14.17 mg/L at the N'Dotré and Anador sites, respectively. The results revealed that a threshold concentration of 0.001 mg/L was reached after 44 years and two months at borehole ZE11, which is located four kilometers downgradient from the source. The maximum peak concentration of 0.011 mg/L was reached at this point after 47 years and two months. In this region, 14 other boreholes could be threatened by dissolved benzene pollution based on the simulation.

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Section: Groundwater Flow Modelsupporting

confidence: 84%

Section: Model Calibration and Validationmentioning

confidence: 99%

Section: Overall Transport Time Of Dissolved Benzenementioning

confidence: 99%

Section: Polluted and Threatened Boreholesmentioning

confidence: 99%

Section: Pollution Issues and Perspectivesmentioning

confidence: 99%

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Assessment of the Potential Pollution of the Abidjan Unconfined Aquifer by Hydrocarbons

et al. 2019

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Influence des Matériaux de Protection des Puits Traditionnels à Usage Domestique sur la Qualité de l’Eau : Cas de la Commune de Yopougon (Côte d’Ivoire)

Gnagne,

Yapo,

Ballet

et al. 2024

ESJ

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Traditional wells for domestic use are an important source of water for part of the population of the Abidjan district. It is essential to study the quality of this water. That is why this study was initiated, with the aim of studying the impact of materials used to protect traditional domestic wells on water quality. To carry out this study, we identified five (5) traditional wells by means of a survey. Four (4) of these wells had protective materials such as car tyres, metal drums, PVC plastic and cement bricks in the casing. The fifth, the control well, has no protective materials. Their water was subjected to physico-chemical analysis. These analyses were carried out using French standard methods and those described by Rodier et al. Iron and silica, which are chemical constituents of car tyres and bricks, and PVC plastic exclusively in the case of silica, were found in very high concentrations in the water whose casings were made from these materials, compared with the control well. In fact, the control well is uncased and shares the same geological nature as the other cased wells. The various chemical elements (silica and iron) are found in this water through dissolution and oxidation reactions. The physico-chemical parameters of the wells with casings were compared with those of the control wells using the non-parametric Mann-Whitney test, and the well waters were divided into groups using Principal Component Analysis (PCA).

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Comparative Analysis Of The Mapping Of The Vulnerability To Pollution Of Fissured Aquifers In Agboville Department By Drastic And SI Methods (South-East Of Côte d'Ivoire)

Aké

Kouadio²,

Kouadio

et al. 2020

ESJ

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Evaluation de la vulnérabilité spécifique aux nitrates (NO<sub>3</sub>) des eaux souterraines du District d’Abidjan (Sud de la Côte d’Ivoire)

Cited by 12 publications

References 11 publications

Assessment of the Potential Pollution of the Abidjan Unconfined Aquifer by Hydrocarbons

Assessment of the Potential Pollution of the Abidjan Unconfined Aquifer by Hydrocarbons

Influence des Matériaux de Protection des Puits Traditionnels à Usage Domestique sur la Qualité de l’Eau : Cas de la Commune de Yopougon (Côte d’Ivoire)

Comparative Analysis Of The Mapping Of The Vulnerability To Pollution Of Fissured Aquifers In Agboville Department By Drastic And SI Methods (South-East Of Côte d'Ivoire)

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