Hydrogeochemistry and stable isotopes of groundwater in the Sudano-Sahelian zone: A case of the Mayo Bocki watershed in North Cameroon
Groundwater is the main source of water supply for domestic, agricultural and industrial uses, especially in the sahelian regions. The present study is carried out in the basement aquifers of the Mayo Bocki catchment, Cameroon. It aims to determine the controlling factors of groundwater mineralizati...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-01-01
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| Series: | HydroResearch |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589757823000021 |
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| author | J.B. Haman Didier Wilson Y. Fantong Ewodo G. Mboudou Auguste Ombolo Therese L.L. Nenkam Jokam Gergino Y. Chounna Gabriel Messi |
| author_facet | J.B. Haman Didier Wilson Y. Fantong Ewodo G. Mboudou Auguste Ombolo Therese L.L. Nenkam Jokam Gergino Y. Chounna Gabriel Messi |
| author_sort | J.B. Haman Didier |
| collection | DOAJ |
| description | Groundwater is the main source of water supply for domestic, agricultural and industrial uses, especially in the sahelian regions. The present study is carried out in the basement aquifers of the Mayo Bocki catchment, Cameroon. It aims to determine the controlling factors of groundwater mineralization and to assess the relative mobility of chemical elements in the aquifers. The methodology adopted was based on conventional geochemical classifications and multivariate statistical analyses. The results revealed that these waters are characterised by low to medium mineralization in both the altered and fractured aquifers. The average concentration of cations followed the trend Ca2+ > Na+ > Mg2+ > K+ while that of anions was HCO3− > NO3− > Cl− > SO42−. The predominant hydrochemical facies was Ca Mg- HCO3 (77%). The acquisition of mineralization by groundwater in this basin involves several natural geochemical processes, including hydrolysis of silicates, dissolution of carbonate minerals, base exchange and leaching. In addition, the chemical inputs used in agriculture make a significant contribution to the chemical signature of these waters. Stable isotopes (18O, 2H) have shown that the water masses in the reservoirs are derived from rainwater and that their chemistry is not influenced by evaporation process. The predominant chemical alteration type in the area under study is monosiallitization. During this weathering process, the behaviour of chemical elements varies from one rock to another. In general, altered rock forms (granite, basalt, trachyte, schist and clay) are enriched in K2O, Na2O, P2O5, Al2O3, SiO2 and depleted in CaO, MgO, MnO, F2O3, SO3, Cl. The relative mobility of the constituents in the aqueous phase revealed that Mn, Zn, Sr, Ca, Na and Mo are the most mobile elements while Al, Th, Cs, Fe are the least mobile elements. |
| first_indexed | 2024-04-10T18:28:49Z |
| format | Article |
| id | doaj.art-674a517939744e86b79207dfbfd6a8a2 |
| institution | Directory Open Access Journal |
| issn | 2589-7578 |
| language | English |
| last_indexed | 2024-04-10T18:28:49Z |
| publishDate | 2023-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | HydroResearch |
| spelling | doaj.art-674a517939744e86b79207dfbfd6a8a22023-02-02T04:49:28ZengKeAi Communications Co., Ltd.HydroResearch2589-75782023-01-0163651Hydrogeochemistry and stable isotopes of groundwater in the Sudano-Sahelian zone: A case of the Mayo Bocki watershed in North CameroonJ.B. Haman Didier0Wilson Y. Fantong1Ewodo G. Mboudou2Auguste Ombolo3Therese L.L. Nenkam Jokam4Gergino Y. Chounna5Gabriel Messi6Doctoral Training Unit of Fundamental Sciences, Department of Earth Sciences, Faculty of Sciences, University of Maroua, Box 814, Maroua, Cameroon; Corresponding author.Institute of Geological and Mining Research, Ministry of Scientific Research and Innovation, Box 4110, Yaounde, CameroonDepartment of Hydraulics and Water Management of the National High School Polytechnic, University of Maroua, Box 46, Maroua, CameroonHigher Institute of Agriculture, Forestry, Water and Environment, University of Ebolowa, Box 786, Ebolowa, CameroonDepartment of Environmental Biology and Chemistry, Graduate School of Science and Engineering, University of Toyama, Gofuku 3190, Toyama 930-8555, JapanDepartment of Environmental Engineering, National Advanced School of Public Works, Yaounde, PO Box 510, CameroonDepartment of Hydraulics and Water Management of the National High School Polytechnic, University of Maroua, Box 46, Maroua, CameroonGroundwater is the main source of water supply for domestic, agricultural and industrial uses, especially in the sahelian regions. The present study is carried out in the basement aquifers of the Mayo Bocki catchment, Cameroon. It aims to determine the controlling factors of groundwater mineralization and to assess the relative mobility of chemical elements in the aquifers. The methodology adopted was based on conventional geochemical classifications and multivariate statistical analyses. The results revealed that these waters are characterised by low to medium mineralization in both the altered and fractured aquifers. The average concentration of cations followed the trend Ca2+ > Na+ > Mg2+ > K+ while that of anions was HCO3− > NO3− > Cl− > SO42−. The predominant hydrochemical facies was Ca Mg- HCO3 (77%). The acquisition of mineralization by groundwater in this basin involves several natural geochemical processes, including hydrolysis of silicates, dissolution of carbonate minerals, base exchange and leaching. In addition, the chemical inputs used in agriculture make a significant contribution to the chemical signature of these waters. Stable isotopes (18O, 2H) have shown that the water masses in the reservoirs are derived from rainwater and that their chemistry is not influenced by evaporation process. The predominant chemical alteration type in the area under study is monosiallitization. During this weathering process, the behaviour of chemical elements varies from one rock to another. In general, altered rock forms (granite, basalt, trachyte, schist and clay) are enriched in K2O, Na2O, P2O5, Al2O3, SiO2 and depleted in CaO, MgO, MnO, F2O3, SO3, Cl. The relative mobility of the constituents in the aqueous phase revealed that Mn, Zn, Sr, Ca, Na and Mo are the most mobile elements while Al, Th, Cs, Fe are the least mobile elements.http://www.sciencedirect.com/science/article/pii/S2589757823000021HydrogeochemistryStables isotopesGroundwaterRelative mobilityMayo Bocki |
| spellingShingle | J.B. Haman Didier Wilson Y. Fantong Ewodo G. Mboudou Auguste Ombolo Therese L.L. Nenkam Jokam Gergino Y. Chounna Gabriel Messi Hydrogeochemistry and stable isotopes of groundwater in the Sudano-Sahelian zone: A case of the Mayo Bocki watershed in North Cameroon HydroResearch Hydrogeochemistry Stables isotopes Groundwater Relative mobility Mayo Bocki |
| title | Hydrogeochemistry and stable isotopes of groundwater in the Sudano-Sahelian zone: A case of the Mayo Bocki watershed in North Cameroon |
| title_full | Hydrogeochemistry and stable isotopes of groundwater in the Sudano-Sahelian zone: A case of the Mayo Bocki watershed in North Cameroon |
| title_fullStr | Hydrogeochemistry and stable isotopes of groundwater in the Sudano-Sahelian zone: A case of the Mayo Bocki watershed in North Cameroon |
| title_full_unstemmed | Hydrogeochemistry and stable isotopes of groundwater in the Sudano-Sahelian zone: A case of the Mayo Bocki watershed in North Cameroon |
| title_short | Hydrogeochemistry and stable isotopes of groundwater in the Sudano-Sahelian zone: A case of the Mayo Bocki watershed in North Cameroon |
| title_sort | hydrogeochemistry and stable isotopes of groundwater in the sudano sahelian zone a case of the mayo bocki watershed in north cameroon |
| topic | Hydrogeochemistry Stables isotopes Groundwater Relative mobility Mayo Bocki |
| url | http://www.sciencedirect.com/science/article/pii/S2589757823000021 |
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