Hydrogeochemical characterization and assessment of groundwater quality in the Kwahu-Bombouaka Group of the Voltaian Supergroup, Ghana

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dc.authoridSunkari, Emmanuel Daanoba/0000-0002-0898-2286
dc.contributor.authorSunkari, Emmanuel Daanoba
dc.contributor.authorAbu, Mahamuda
dc.contributor.authorZango, Musah Saeed
dc.contributor.authorWani, Alex Modi Lomoro
dc.date.accessioned2024-11-07T13:32:55Z
dc.date.available2024-11-07T13:32:55Z
dc.date.issued2020
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractThe Kwahu-Bombouaka Group of the Voltaian Basin, which defines the northern fringe of the basin, constitutes a significant part of the North East Region of Ghana. Most of the inhabitants in the region depend on groundwater for domestic and irrigation purposes. Therefore, a geochemical characterization and assessment of groundwater quality in the area was carried out using hydrochemical, GIS-based ordinary kriging interpolation and multivariate statistical methods on fifty-five (55) borehole water samples. The aim of this study was to determine the concentrations and spatial distribution of various ions, groundwater quality issues and the geochemical processes contributing to groundwater chemistry. The area is largely underlain by sandy shales and mudstones of the Poubogou Formation and feldspathic, quartzitic sandstones with conglomeratic lenses of the Panabako Formation. The abundance of major cations in the groundwater is in the order: Na+ > Ca2+ > K+ > Mg2+ whereas that of the major anions vary in the order: HCO3- > SO42- > Cl-. Na-HCO3 water type is common in the area, which may be due to dissolution from silicate minerals (albite and microcline) in the basement rocks. The results indicate that fluoride (0.01-8.40 mg/L, mean of 0.58 mg/L) and boron (0.01-4.81 mg/L, mean of 0.28 mg/L) contamination is a threat to groundwater quality with respect to their guideline values provided by the World Health Organization. The groundwater chemistry is primarily controlled by ion exchange reactions, weathering of silicate minerals residing in the Panabako Formation and anthropogenic activities from agriculture. Groundwater in the area is largely suitable for drinking purposes although some few boreholes in the northwestern and southeastern parts have high fluoride and boron concentrations. The sodium percentage (11-99%, mean of 70%), magnesium ratios (2.05-57, mean of 29) and sodium adsorption ratio (0.15-38, mean of 4.72) are quite high in some of the communities in the southeastern part of the area. This suggests that water in this part of the area is not entirely suitable for irrigation
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK); Earth Science Department of the Faculty of Earth and Environmental Sciences, University for Development Studies; Government of Ghana; European Association of Geochemistry; GeoHost Support Program
dc.description.sponsorshipThe first author acknowledges the continuous support from the Scientific and Technological Research Council of Turkey (TUBITAK) as a PhD research fellow of BIDEB 2215 Graduate Scholarship Program for International Students during the time of this research. The second and third authors acknowledge the support of Earth Science Department of the Faculty of Earth and Environmental Sciences, University for Development Studies and the Government of Ghana during this work. This study was also financially supported by the European Association of Geochemistry and the GeoHost Support Program for oral presentation by the first author at the 36th International Geological Congress in New Delhi, India. The Editor Prof. Mohamed G. Abdelsalam, anonymous reviewers, and Prof. Sandow Mark Yidana are greatly acknowledged for the useful reviews.
dc.identifier.doi10.1016/j.jafrearsci.2020.103899
dc.identifier.issn1464-343X
dc.identifier.issn1879-1956
dc.identifier.scopus2-s2.0-85085750014
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1016/j.jafrearsci.2020.103899
dc.identifier.urihttps://hdl.handle.net/11480/15660
dc.identifier.volume169
dc.identifier.wosWOS:000540671100006
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofJournal of African Earth Sciences
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectHydrochemistry
dc.subjectGroundwater quality
dc.subjectFluoride and boron contamination
dc.subjectVoltaian supergroup
dc.subjectNortheastern Ghana
dc.titleHydrogeochemical characterization and assessment of groundwater quality in the Kwahu-Bombouaka Group of the Voltaian Supergroup, Ghana
dc.typeArticle

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