Salinization Processes in the Benichab Coastal Aquifer-Mauritania

Mohamed, Mouhamed Lemine; Diongue, Djim M.L.; Emvoutou, Huguette C.; Mohamed, Ahmed Salem; Jiddou, Mohamed Ould; Faye, Sérigne

doi:10.4236/ijg.2020.116020

Cited by 5 publications

(2 citation statements)

References 34 publications

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“…Indeed, if the ratio is less than 1 and close to the marine ratio value (0.86) it may be due to seawater intrusion [54] [55]. Instead, a ratio greater than 1 suggests that sodium sources are from ion exchange reactions [51] [56] or Silicate weathering [57]. Furthermore, the Simpson ratio (Cl − / 3 HCO − ) can also be used to classify the impacts of seawater intrusion on groundwater mineralization [58].…”

Section: Hydrochemistry and Statistical Analysismentioning

confidence: 99%

Evaluation of Groundwater Quality in the Deep Maastrichtian Aquifer of Senegal Using Multivariate Statistics and Water Quality Index-Based GIS

Diongue¹,

Sagnane²,

Emvoutou³

et al. 2022

JEP

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A regional groundwater quality evaluation was conducted in the deep Maastrichtian aquifer of Senegal through multivariate statistical analysis and a GISbased water quality index using physicochemical data from 232 boreholes distributed over the whole country. The aim was to 1) identify the water types and likely factors influencing the hydrochemistry, and 2) determine the suitability of groundwater for drinking and irrigation. Results showed that sodium, chloride, and fluoride are highly correlated with electrical conductivity (EC) reflecting the significant contribution of these elements to groundwater mineralization. The principal component analysis evidenced: 1) salinization processes (loaded by Na + , K + , EC, Cl − , F − and 3 HCO − ) controlled by water/rock interaction, seawater intrusion and cation exchange reactions; 2) dolomite dissolution loaded by the couple Ca 2+ and Mg 2+ and 3) localized mixing with upper aquifers and gypsum dissolution respectively loaded by 3 NO − and 2 4 SO − .The hierarchical clustering analysis distinguished four clusters: 1) freshwater (EC = 594 µs/cm) with mixed-HCO 3 water type and ionic contents below WHO standard; 2) brackish (Na-mixed) water type with moderate mineralization content (1310 µs/cm), 3) brackish (Na-Cl) water type depicted by high EC values (3292 µs/cm) and ionic contents above WHO and 4) saline water with Na-Cl water type and very high mineralization contents (5953 µs/cm). The mapping of the groundwater quality index indicated suitable zones for drinking accounting for 54% of the entire area. The occurrence of a central brackish band and its vicinity, which were characterized by high mineralization, yielded unsuitable groundwater for drinking and agricultural uses.

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Section: Hydrochemistry and Statistical Analysismentioning

confidence: 99%

Evaluation of Groundwater Quality in the Deep Maastrichtian Aquifer of Senegal Using Multivariate Statistics and Water Quality Index-Based GIS

Diongue¹,

Sagnane²,

Emvoutou³

et al. 2022

JEP

Self Cite

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show abstract

“…In-situ sanitation facilities, mainly pit latrines and septic tanks, are considered the dominant cause of microbiological contamination and a significant cause of nutrient loading to water sources (Lapworth et al, 2017). Groundwater in coastal areas can also evidence an accentuated salinization due to seawater's influence (Akouvi et al, 2008;Olufemi, 2010;Mohamed et al, 2020). (Mande et al, 2012;Soncy et al, 2015;Gnazou et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Physicochemical and Microbiological Quality of Shallow Groundwater in Lomé, Togo

Akpataku¹,

Gnazou²,

Nomesi³

et al. 2020

GEP

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A review: saltwater intrusion in North Africa’s coastal areas—current state and future challenges

Agoubi

2021

Environ Sci Pollut Res

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Salinization Processes in the Benichab Coastal Aquifer-Mauritania

Cited by 5 publications

References 34 publications

Evaluation of Groundwater Quality in the Deep Maastrichtian Aquifer of Senegal Using Multivariate Statistics and Water Quality Index-Based GIS

Evaluation of Groundwater Quality in the Deep Maastrichtian Aquifer of Senegal Using Multivariate Statistics and Water Quality Index-Based GIS

Physicochemical and Microbiological Quality of Shallow Groundwater in Lomé, Togo

A review: saltwater intrusion in North Africa’s coastal areas—current state and future challenges

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Salinization Processes in the Benichab Coastal Aquifer-Mauritania

Cited by 5 publications

References 34 publications

Evaluation of Groundwater Quality in the Deep Maastrichtian Aquifer of Senegal Using Multivariate Statistics and Water Quality Index-Based GIS

Evaluation of Groundwater Quality in the Deep Maastrichtian Aquifer of Senegal Using Multivariate Statistics and Water Quality Index-Based GIS

Physicochemical and Microbiological Quality of Shallow Groundwater in Lom&#233;, Togo

A review: saltwater intrusion in North Africa’s coastal areas—current state and future challenges

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Physicochemical and Microbiological Quality of Shallow Groundwater in Lomé, Togo