Fluoride Effects and Removal

Fluoride occurs naturally in groundwater when water moves through fluoride-bearing rock formations, and while trace amounts support dental health, prolonged exposure above roughly 1.5 mg/L causes skeletal and dental fluorosis, kidney damage, and other systemic harms affecting hundreds of millions of people across South Asia, East Africa, and parts of Latin America. Researchers working on fluoride contamination study how geological and hydrological conditions govern its distribution, how it moves through the body and accumulates over time, and how cost-effective materials—activated alumina, bone char, metal-oxide composites, agricultural waste derivatives—can selectively pull fluoride out of water through adsorption. A central challenge is designing defluoridation systems that remain effective across the variable chemistry of real groundwater, remain affordable enough for low-income rural communities, and do not introduce secondary contaminants when the spent adsorbent is discarded. Current work is pushing toward better mechanistic understanding of adsorption at the molecular level and toward field-scale demonstrations that can bridge the persistent gap between laboratory performance and practical deployment.

Works

46,227

Total citations

484,978

Keywords

FluorideDrinking WaterDefluoridationAdsorptionToxicityGroundwater