Hydrochemical characterization of groundwater in the Nekor basin located in the North-East of the Rif of Morocco - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Moroccan journal of chemistry Année : 2017

Hydrochemical characterization of groundwater in the Nekor basin located in the North-East of the Rif of Morocco

Mohammad Ghalit
  • Fonction : Auteur
Yousfi Badr-Eddine
  • Fonction : Auteur
M. Zouhairi
  • Fonction : Auteur
E. Gharibi
  • Fonction : Auteur
J.D. Taupin

Résumé

In order to evaluate the physicochemical quality of the groundwater of the Nekor watershed (central Rif area in Morocco) and to explain the origin of the mineralization of these waters, we have analyzed the major elements and traces in water samples taken from 17 wells distributed along the basin. This study showed that the samples of water are very charged with a very important mineralization (≥ 1500 mg / l). The Piper diagram allowed us to define dominant Ca-SO4 or Mg-SO4 hydrochemical facies in upstream of the basin. In downstream of the basin Na-SO4 or Na-Cl is the dominant facies. The analyzes of the trace elements show very high levels of manganese, aluminum and iron with contents exceeding those set by the WHO recommendations.The geochemical study shows that the water-rock interaction is predominant in the aquifer. The water saturation indices indicate that these waters are supersaturated in carbonate minerals.The Principal Component Analysis (PCA) and the analysis of the reports of the major elements allowed us the classification of the waters and the determination of the correlation between the various parameters. Two major phenomena in the acquisition of mineralization of water have been put in evidence. The main phenomenon is the dissolution of the rock by the contact water rock due to the important residence time in the aquifer. The second phenomenon is associated to the supply of nutrients and therefore with the exchange and recharge of the aquifer. The use of hierarchical cluster analysis (HCA) technique revealed three homogeneous groups.

Domaines

Hydrologie
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Dates et versions

hal-02093321 , version 1 (08-04-2019)

Identifiants

Citer

Mohammad Ghalit, Yousfi Badr-Eddine, M. Zouhairi, E. Gharibi, J.D. Taupin. Hydrochemical characterization of groundwater in the Nekor basin located in the North-East of the Rif of Morocco. Moroccan journal of chemistry, 2017, 5 (2), pp.272-284. ⟨10.48317/IMIST.PRSM/morjchem-v5i2.8087⟩. ⟨hal-02093321⟩
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