Defluoridation of water by a one step modification of the Nalgonda technique

Suneetha, N.; Rupa, K Padma; Sabitha, V.; Kumar, Kalish; Mohanty, Shruti; Kanagasabapathy, A. S.; Rao, P. G.

doi:10.4103/1755-6783.50685

Cited by 11 publications

(2 citation statements)

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“…Dahi et al [28] has studied the Nalgonda technique of defluoridation in Tanzania. They report that the local households operated the filter themselves and are willing to modified by Suneetha et al [29] by doubling the concentration of alum and lime. The decrease in fluoride levels in water treated by this method was more than the original Nalgonda technique.…”

Section: The Nalgonda Techniquementioning

confidence: 99%

A Review of Fluoride Removal from Groundwater

Karunanithi¹,

Agarwal

Qanungo

2018

Period. Polytech. Chem. Eng.

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Most of the arid and semiarid zones of the Indian subcontinent are seriously affected by the fluorosis problem due to high concentration of the fluoride in ground water. Due to leaching of fluoride from the fluoride bearing rocks, the groundwater gets contaminated with fluoride. The different techniques for fluoride removal namely, the Activated alumina, the Nalgonda technique, bone charcoal, contact precipitation, electro-dialysis, reverse osmosis, ion-exchange, clay column, bio-adsorbents and MgO are discussed in detail. Their advantages and disadvantages together with the applicability in actual use also been discussed in the paper.

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Section: The Nalgonda Techniquementioning

confidence: 99%

A Review of Fluoride Removal from Groundwater

Karunanithi¹,

Agarwal

Qanungo

2018

Period. Polytech. Chem. Eng.

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“…A few important papers using the Nalgonda technique for fluoride removal are reviewed briefly below. Suneetha et al 30 have modified the Nalgonda technique by doubling the concentration of alum and lime. This ensured that the fluoride levels in water treated by this method decreases by 75 to 88.2%, as compared to 44.6 to 59% by the dosage recommended in the original Nalgonda technique.…”

Section: Nalgonda Techniquementioning

confidence: 99%

A Review of Fluoride Removal From Ground Water by Various Adsorption Techniques

Karunanithi,

Agrawal,

Qanungo

2023

J. Chil. Chem. Soc.

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This paper reviews a number of fluoride's negative consequences on human health. Due to the high concentration of fluoride in the ground water, the majority of the arid and semiarid regions of the Indian subcontinent are severely afflicted by the fluorosis problem. The groundwater becomes fluoridated as a result of fluoride leaching from the fluoride-bearing rocks. A thorough analysis of the various methods for removing fluoride, including the Nalgonda process, bone charcoal, contact precipitation, clay column, electro-dialysis, ion-exchange, and by activated alumina, is then provided.

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