Fluoride in weathered rock aquifers of southern India: Managed Aquifer Recharge for mitigation

Environmental Science and Pollution Research International
K BrindhaL Elango

Abstract

Climatic condition, geology, and geochemical processes in an area play a major role on groundwater quality. Impact of these on the fluoride content of groundwater was studied in three regions-part of Nalgonda district in Telangana, Pambar River basin, and Vaniyar River basin in Tamil Nadu, southern India, which experience semi-arid climate and are predominantly made of Precambrian rocks. High concentration of fluoride in groundwater above 4 mg/l was recorded. Human exposure dose for fluoride through groundwater was higher in Nalgonda than the other areas. With evaporation and rainfall being one of the major contributors for high fluoride apart from the weathering of fluoride rich minerals from rocks, the effect of increase in groundwater level on fluoride concentration was studied. This study reveals that groundwater in shallow environment of all three regions shows dilution effect due to rainfall recharge. Suitable managed aquifer recharge (MAR) methods can be adopted to dilute the fluoride rich groundwater in such regions which is explained with two case studies. However, in deep groundwater, increase in fluoride concentration with increase in groundwater level due to leaching of fluoride rich salts from the unsaturated zone ...Continue Reading

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Jul 10, 2009·Journal of Hazardous Materials·Tahir RafiqueMuhammad Iqbal Bhanger
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Citations

Nov 1, 2016·Environmental Monitoring and Assessment·Govindasamy AgoramoorthyMinna J Hsu
Apr 3, 2020·Environmental Science and Pollution Research International·Adithya Vasanthakumari Sivasankara PillaiDhanu Radha Samayamanthu
Jun 3, 2017·Environmental Monitoring and Assessment·Vetrimurugan ElumalaiL Elango
Mar 25, 2018·Environmental Geochemistry and Health·Indrani Mukherjee, Umesh Kumar Singh
Jan 5, 2021·Environmental Science and Pollution Research International·Sivakumar KarthikeyanSelvam Sekar
Jan 28, 2021·Environmental Science & Technology·Sarah FakhreddineJean-Philippe Nicot
Mar 20, 2021·The Science of the Total Environment·Sarfaraz AlamSanjay K Mohanty
Jul 25, 2021·Environmental Science and Pollution Research International·Xiaoqing ShaoZhen Li
Sep 10, 2021·Environmental Science and Pollution Research International·Shujian LiZhi Li

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