Impact de la décharge publique de Marrakech (Maroc) sur les ressources en eau

Hakkou, R.; Wahbi, Miriam; Bachnou, A.; Elamari, K.; Hanich, L.; Hibti, Mohamed

doi:10.1007/s100640100117

Cited by 22 publications

(9 citation statements)

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“…They are altered on the surface and give a stony soil with a few centimeters of clay soil. However, runoff waters seep partly into cracked and altered areas and fault zones [30,31]. In the Tensift region where the other 6 monitored wells are sited, there is a predominance of superficial limestone formations and very permeable alluvial deposits [32].…”

Section: Dynamics and Ecology Of Non-o1 V Choleraementioning

confidence: 99%

Prevalence, Antimicrobial Resistance and Pathogenicity of Non-O1 Vibrio cholerae in Suburban and Rural Groundwater Supplies of Marrakesh Area (Morocco)

Alaoui¹,

Oufdou²,

Mezrioui³

2021

Infections and Sepsis Development

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This synthesis of research work considers the dynamic, antibiotic resistance, hemolytic, and hemagglutination activities of non-O1 Vibrio cholerae in comparison with those of fecal coliforms, fecal streptococci, and Pseudomonas aeruginosa isolated from suburban and rural groundwater supplies in a Marrakesh area (Morocco). In addition, it assesses the influence of some chemical factors on the distribution of all these bacterial groups. The obtained results showed that the prospected well waters contain them at varying abundance degrees while undergoing generally spatial and temporal fluctuations. The total occurrence of these bacteria during the period of study was 94%. Detectable non-O1 V. cholerae was present in 81% of the samples and the mean abundances ranged from 0 to 11100 MPN/100 ml. According to WHO standards for drinking water, they were heavily contaminated and could have significant health risks for the local population consuming them. Non-O1 V. cholerae and the other studied bacteria are virulent since most of them were found to be adhesive, producers of hemolysins and multi-resistant to antibiotics. Pollution activities around the wells lead to an increase of virulence and antimicrobial resistance in groundwater. This shows the role of these bacteria in several cases of gastro-enteric and systemic pathologies noted in Marrakech local population.

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Section: Dynamics and Ecology Of Non-o1 V Choleraementioning

confidence: 99%

Prevalence, Antimicrobial Resistance and Pathogenicity of Non-O1 Vibrio cholerae in Suburban and Rural Groundwater Supplies of Marrakesh Area (Morocco)

Alaoui¹,

Oufdou²,

Mezrioui³

2021

Infections and Sepsis Development

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“…The results of the study visits to the LTC of Oum Azza and the five main LTCs of the cities of Fez [3], Meknes [4], Oujda [5], Marrakech [6] and Casablanca [7] allowed the update of technical information on the quantities of waste and the technical measures applied thereon, including the latest data reported by Allix [2].…”

Section: Benchmark Studymentioning

confidence: 99%

Physicochemical characterization of leachates produced in the Rabat-Salé-Kénitra Region landfill technical center and monitoring of their treatment by aeration and reverse osmosis

Jalil¹,

Elkrauni²,

Khamar³

et al. 2020

E3S Web Conf.

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The aim of this work is to study the physicochemical characterization and monitoring of the treatment of leachate generated by the landfilling of household and similar waste in the landfill of Rabat-Salé-Kénitra Region. The analysis of the results showed a high concentration of easily biodegradable organic matter. The pollutant load is of the order of 3,850 mg/L of the chemical oxygen demand (COD), 1.260 mg/L of the biochemical oxygen demand (BOD5), and shows an average content of nitrates (NO3-=56.6 mg/L). This mineral pollution is caused by a high electrical conductivity, which reaches an average value of 15.9 mS/cm, and a low concentration of heavy metals in the raw leachate such as lead (Pb = 1.591 mg/L), copper (Cu = 1.017 mg/L), and cadmium (Cd = 0.109 mg/L). The biological treatment allows for the successive biodegradation of 40% of the BOD5, and 33% of the COD. Moreover, the reverse osmosis filtration in organic membranes achieves a reduction of 98% for BOD5, 97% for COD, 85% for lead, and 67% for copper. In this study, biological and reverse osmosis treatments represented an effective treatment for the organic and metallic leachate pollutants of this landfill.

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“…La relation entre la qualité de l'eau et le niveau de concentration en microorganismes des points échantillonnés a été examinée à travers une analyse en composante principale. Les résultats indiquent que les deux premières composantes principales expliquent à 75,88% toute la variabilité liée à la concentration en microorganismes et la qualité de l'eau des points échantillonnés, ce qui garantit une bonne interprétation des résultats obtenus similaires à ceux de la littérature (Hakkou et al, 2001 ;Hounssinou et al, 2015). La température, le TDS, les matières en suspension, la turbidité, le nombre de coliformes totaux, le nombre de coliformes fécaux et le nombre de Escherichia coli sont bien représentés sur la composante 1 et contrastent le pH et l'oxygène dissous (Tableau 3 et Figure 5).…”

Section: Relation Entre La Qualité De L'eau Et Le Niveau De Concentraunclassified

Corrélation entre les résultats physico-chimiques et microbiologiques des lixiviats du lieu d’enfouissement sanitaire (LES) de Ouèssè/Ouidah et ceux des eaux souterraines et superficielles du milieu

Josse¹,

Toklo²,

Dossou-Yovo³

et al. 2016

Int. J. Bio. Chem. Sci

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Dans le but d'établir la corrélation entre les résultats des lixiviats du LES et ceux des eaux souterraines (puits et piézos) et de surface (lac), des analyses en composantes principales et factorielles ont été réalisées. Ces analyses permettent d'avoir une vue mathématique exacte de la répartition des points correspondants aux prélèvements dans l'espace défini par les facteurs qui sont les éléments analysés. L'analyse en composante principale des paramètres physico-chimiques et microbiologiques des deux premiers axes de la corrélation explique à 68,19% la variabilité du niveau des paramètres physico-chimiques et à 75,88% celle liée à la concentration en microorganismes dans les eaux de tous les points échantillonnés autour des lixiviats. La relation entre les paramètres étudiés des différents points échantillonnés avec les lixiviats, par rapport à la qualité de l'eau, a été aussi examinée à l'aide d'une analyse factorielle des correspondances simples. Les résultats obtenus montrent que les deux premiers axes de la corrélation expliquent à 95, 67% toute la variabilité des paramètres de qualité de l'eau au niveau des stations.

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Impact de la décharge publique de Marrakech (Maroc) sur les ressources en eau

Cited by 22 publications

References 0 publications

Prevalence, Antimicrobial Resistance and Pathogenicity of Non-O1 Vibrio cholerae in Suburban and Rural Groundwater Supplies of Marrakesh Area (Morocco)

Prevalence, Antimicrobial Resistance and Pathogenicity of Non-O1 Vibrio cholerae in Suburban and Rural Groundwater Supplies of Marrakesh Area (Morocco)

Physicochemical characterization of leachates produced in the Rabat-Salé-Kénitra Region landfill technical center and monitoring of their treatment by aeration and reverse osmosis

Corrélation entre les résultats physico-chimiques et microbiologiques des lixiviats du lieu d’enfouissement sanitaire (LES) de Ouèssè/Ouidah et ceux des eaux souterraines et superficielles du milieu

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