Hydrochemical characterisation of high-fluoride groundwater and development of a conceptual groundwater flow model using a combined hydrogeological and hydrochemical approach on an active volcano: Mount Meru, Northern Tanzania

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dc.contributor.authorBennett, George
dc.contributor.authorReybrouck, Jill Van
dc.contributor.authorShemsanga, Ceven
dc.contributor.authorKisaka, Mary
dc.contributor.authorTomašek, Ines
dc.contributor.authorFontijn, Karen
dc.contributor.authorKervyn, Matthieu
dc.contributor.authorWalraevens, Kristine
dc.date.accessioned2023-05-23T12:07:18Z
dc.date.available2023-05-23T12:07:18Z
dc.date.issued2021
dc.descriptionFull text article. Also available at https://doi.org/10.3390/w13162159en_US
dc.description.abstractThis study characterises high-fluoride groundwater in the aquifer system on the flanks of Mount Meru, focusing on parts of the flanks that were only partially or not at all covered by previous research. Additionally, we analyse the impact of rainwater recharge on groundwater chemistry by monitoring spring discharges during water sampling. The results show that the main groundwater type in the study area is NaHCO3 alkaline groundwater (average pH = 7.8). High F− values were recorded: in 175 groundwater samples, the concentrations range from 0.15 to 301 mg/L (mean: 21.89 mg/L, median: 9.67 mg/L), with 91% of the samples containing F− values above the WHO health-based guideline for drinking water (1.5 mg/L), whereas 39% of the samples have Na+ concentrations above the WHO taste-based guideline of 200 mg/L. The temporal variability in F− concentrations between different seasons is due to the impact of the local groundwater recharge. We recommend that a detailed ecohydrological study should be carried out for the low-fluoride springs from the high-altitude recharge areas on the eastern and northwestern flanks of Mount Meru inside Arusha National Park. These springs are extracted for drinking purposes. An ecohydrological study is required for the management of these springs and their potential enhanced exploitation to ensure the sustainability of this water extraction practice. Another strategy for obtaining safe drinking water could be to use a large-scale filtering system to remove F− from the groundwater.en_US
dc.identifier.citationBennett, G., Van Reybrouck, J., Shemsanga, C., Kisaka, M., Tomašek, I., Fontijn, K., ... & Walraevens, K. (2021). Hydrochemical characterisation of high-fluoride groundwater and development of a conceptual groundwater flow model using a combined hydrogeological and hydrochemical approach on an active volcano: Mount Meru, northern Tanzania. Water, 13(16), 2159.en_US
dc.identifier.otherDOI: https://doi.org/10.3390/w13162159
dc.identifier.urihttp://hdl.handle.net/20.500.12661/3860
dc.language.isoenen_US
dc.publisherMPDIen_US
dc.subjectGroundwateren_US
dc.subjectGroundwater qualityen_US
dc.subjectGroundwater resource managementen_US
dc.subjectAlkaline groundwateren_US
dc.subjectFluoride concentrationen_US
dc.subjectFluorideen_US
dc.subjectHigh fluoride concentrationen_US
dc.subjectAquiferen_US
dc.subjectVolcanic aquiferen_US
dc.subjectMount Meruen_US
dc.subjectTanzaniaen_US
dc.subjectMount Meru flanksen_US
dc.subjectEast African Rift Systemen_US
dc.subjectVolcanic aquiferen_US
dc.titleHydrochemical characterisation of high-fluoride groundwater and development of a conceptual groundwater flow model using a combined hydrogeological and hydrochemical approach on an active volcano: Mount Meru, Northern Tanzaniaen_US
dc.typeArticleen_US
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