Stable isotope (18O) investigations on the processes controlling fluoride contamination of groundwater

Fluoride is one of the most widespread groundwater pollutant. More than 200 million people, from 25 nations, are suffering from fluorosis. This review presents an overview of fluoride distribution in groundwaters, and defluoridation techniques. Adsorption is the most common technique; however, the efficiency, sorbate disposal and continuous supply of efficient sorbates are still problematic. Membrane processes are quite efficient but not economical for developing communities. This article therefore highlights the importance of further research on efficient and cost-effective defluoridation for the rural developing communities not only to be used for household filtration units but also for use in community water supply schemes.

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“…Other common sources of fluoride in soil and groundwater are the following (Datta et al 1996): 1. Hydrogeothermal sources 2.…”

Section: Other Sourcesmentioning

confidence: 99%

Fluoride in the environment: sources, distribution and defluoridation

2015

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“…The amount of water soluble fluoride in the soil near a phosphate fertilizer plant in Brazil was 10 mg/kg. Datta et al (1996) put forth that if an agriculture field of 1 ha receives 10 cm of irrigation water containing 10 mg/L of fluoride, then the soil can obtain 10 kg of fluoride. This is considered as a potential threat for increase in fluoride concentration in soil and groundwater.…”

Section: Anthropogenic Sources Of Fluoridementioning

confidence: 99%

“…• Osteoporosis and Arthritis On July 9, 1998 the Manchester Guardian reported news of fluoride poisoned water in Central India, from untested wells drilled in the 1980s, causing severe arthritic damage to tens of millions of people a national disaster (Datta et al 1996). …”

Section: Health Effects Of Fluoridementioning

confidence: 99%

Arsenic and Fluoride Pollution in Water and Soils

Farooqi

2015

Arsenic and Fluoride Contamination

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“…Hence, fluoride contamination is widespread, intensive and alarming in India. About 50 % of the groundwater in Delhi exceeds the maximum permissible limit for fluoride in drinking water (Datta et al 1996). Jacks et al (2005) observed that high fluoride in groundwater in many parts of India was due to evapotranspiration of groundwater with residual alkalinity.…”

Section: Asian Scenariomentioning

confidence: 99%