A Critical Review on Occurrence of Fluoride and Its Removal through Adsorption with an Emphasis on Natural Minerals

Biswas, Gargi; Kumari, Manjari; Adhikari, Kalyan; Dutta, Susmita

doi:10.1007/s40726-017-0054-8

Cited by 42 publications

(11 citation statements)

References 95 publications

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“…The simulations were performed using the commercial FEM software COMSOL Multiphysics (COMSOL, Inc., Burlington MA, USA). In particular, the MPB equation (4) was solved using the Mathematics module while the drift-diffusion equation was implemented with the Transport of Dilute Species interface, and, finally, the Navier-Stokes equation (14) was calculated using the Laminar Flow interface. The fluidodynamic problem is first solved and the retrieved velocity field is inserted in the mass transport problem, coupled with the electrostatic one.…”

Section: Simulations Overviewmentioning

confidence: 99%

“…It can be released into groundwaters from rocks and can be particular abundant in water derived from hydrogeothermal sources (the so called "juvenile" water). In many countries around the world, the safety of potable waters affects the population's quotidian lives, as well as their economic development [3], [4]. Most of the areas affected by this problem suffer from scarce water availability [8].…”

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confidence: 99%

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Preliminary Study and Numerical Investigation of an Electrostatic Unit for the Removal of Fluoride From Thermal Water of Ethiopian Rift Valley

Lodi

Fanari

Fanti

et al. 2020

IEEE J. Multiscale Multiphys. Comput. Tech.

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This article deals with the numerical modeling of the multiphysics investigation of an electric-field-based device for the defluoridation of Ethiopian water to mitigate fluorosis while satisfying the World Health Organization quality requirement for potable water. A tubular reactor with metallic parallel plates, connected to a static voltage source, exerts an electric force on the ion in solution, attracting it to the electrodes. Meanwhile, the ion is drifted by the laminar water flow which, in turn, allows us to separate and collect the F −-rich stream from the potable one. In this system, the electrostatic problem and the mass transport are coupled according to the highly nonlinear modified Poisson-Nernst-Planck-Stokes equations system. Therefore, carefully modeling the dielectric permittivity, the ionic diffusivity, and mobility as function of fluoride concentration and temperature, the set of operating parameters to ensure the highest fluoride removal from Ethiopian thermal water is identified.

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Section: Simulations Overviewmentioning

confidence: 99%

mentioning

confidence: 99%

Preliminary Study and Numerical Investigation of an Electrostatic Unit for the Removal of Fluoride From Thermal Water of Ethiopian Rift Valley

Lodi

Fanari

Fanti

et al. 2020

IEEE J. Multiscale Multiphys. Comput. Tech.

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“…The selection and preparation of adsorbents for simultaneous uoride and manganese removal are key to research and applications. 13 Natural minerals with a low price and good chemical stability, such as zeolite, sepiolite, tourmaline, and hydroxyapatite (HAP), are oen used to adsorb and treat heavy metal ions in water. [14][15][16][17][18] HAP is a natural apatite mineral.…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization serpentine-loaded hydroxyapatite and its simultaneous removal performance for fluoride, iron and manganese

Liu

et al. 2021

RSC Adv.

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“…reported fluoride and arsenic in the contaminated groundwater; current technologies reviews for contaminants removal, the study categorized the technologies into three distinct groups. Further investigation has been dedicated to developing the latest natural materials with cost-effectiveness for the fluoride removal in water by employing bone char, red clay, citreous lemon leaf [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Assessment of high fluoride in water sources and endemic fluorosis in the North-Eastern communities of Gombe State, Nigeria

Giwa

Memon

Ahmad

et al. 2021

Environmental Pollutants and Bioavailability

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Fluoride content of drinking water sources in 12 communities in North-Eastern states, Nigeria, was investigation. The fluoride concentration analyses were performed using the SPADNS method according to the standard method for examining water and wastewater. Fluoride concentration was in the range of 0.35-3.46 mg/L in the drinking water sources. Notably, communities with high fluoride content above the World Health Organization (WHO) guideline were observed in Tumu-2 (2.88 mg/L), Lapan (3.46 mg/L), Jalingo (1.79 mg/L), and Kaleh (1.60 mg/L), respectively. The physical survey conducted indicates severe affliction of fluorosis in Lapan communities; (38% dental fluorosis, 27% skeletal fluorosis, 22% dental and skeletal, 13% without fluorosis), thus, demanding to be urgently redressed. Different water de-fluoridation processes, technologies selection, limitations, and strengths that could serve as treatment purposes in diverse conditions were proposed and highlighted to aid relevant authorities in the future implementation of mitigation measures.

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A Critical Review on Occurrence of Fluoride and Its Removal through Adsorption with an Emphasis on Natural Minerals

Cited by 42 publications

References 95 publications

Preliminary Study and Numerical Investigation of an Electrostatic Unit for the Removal of Fluoride From Thermal Water of Ethiopian Rift Valley

Preliminary Study and Numerical Investigation of an Electrostatic Unit for the Removal of Fluoride From Thermal Water of Ethiopian Rift Valley

Preparation, characterization serpentine-loaded hydroxyapatite and its simultaneous removal performance for fluoride, iron and manganese

Assessment of high fluoride in water sources and endemic fluorosis in the North-Eastern communities of Gombe State, Nigeria

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