Fluoride in Groundwater- Sources, Geochemical Mobilization and Treatment Options

Kumar, PJ Sajil

doi:10.19080/ijesnr.2017.01.555567

Cited by 2 publications

(1 citation statement)

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“…Weathering and mineral dissolution of fluoride are assisted via cation exchange of Na + and K + ions in the aquifer substrate against Ca 2+ and Mg 2+ ions. Alkaline pH, high HCO − 3 concentrations, and a high Na/Ca ratio are the best conditions for raising fluoride levels in groundwater [150].…”

Section: Groundwatermentioning

confidence: 99%

Bioaccumulation of Fluoride in Plants and Its Microbially Assisted Remediation: A Review of Biological Processes and Technological Performance

et al. 2021

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Fluoride is widely found in soil–water systems due to anthropogenic and geogenic activities that affect millions worldwide. Fluoride ingestion results in chronic and acute toxicity, including skeletal and dental fluorosis, neurological damage, and bone softening in humans. Therefore, this review paper summarizes biological processes for fluoride remediation, i.e., bioaccumulation in plants and microbially assisted systems. Bioremediation approaches for fluoride removal have recently gained prominence in removing fluoride ions. Plants are vulnerable to fluoride accumulation in soil, and their growth and development can be negatively affected, even with low fluoride content in the soil. The microbial bioremediation processes involve bioaccumulation, biotransformation, and biosorption. Bacterial, fungal, and algal biomass are ecologically efficient bioremediators. Most bioremediation techniques are laboratory-scale based on contaminated solutions; however, treatment of fluoride-contaminated wastewater at an industrial scale is yet to be investigated. Therefore, this review recommends the practical applicability and sustainability of microbial bioremediation of fluoride in different environments.

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Section: Groundwatermentioning

confidence: 99%