Fluoride distribution and contamination in the water, soil and plants continuum and its remedial technologies, an Indian perspective– a review

Singh, Gayatri; Kumari, Babita; Sinam, Geetgovind; Kriti,; Kumar, Navin; Mallick, Shekhar

doi:10.1016/j.envpol.2018.04.002

Cited by 196 publications

(72 citation statements)

References 83 publications

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“…Artemisisa absinthium did not show any reduction in the number of leaves at both 30 ppm and 50 ppm concentrations of NaF, whereas Cannabis sativa showed a decrease in number of leaves and percentage reduction was found to be 15% at both the concentration of 30 ppm and 50 ppm of sodium fluoride (shown in Fig. 2 revealed that treated plants with a range of sodium fluoride (NaF) also showed a reduction in number of leaves [39]. The differences between concentrations were analyzed in each species, but the results were not significant as the p-values of Conyza Canadensis, Cannabis Sativus and Artemisia Absinthium were 0.7313, 0.0955 and 0.3944, respectively.…”

Section: Effects Of the Treatment Of Naf On Number Of Leavesmentioning

confidence: 91%

Effects of Increasing Soil Fluoride on the Growth of Vegetation in the Vicinity of Brick Kilns: A Case Study from Rawalpindi, Pakistan

Bano

Khayyam

Khalid³

2020

Pol. J. Environ. Stud.

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Section: Effects Of the Treatment Of Naf On Number Of Leavesmentioning

confidence: 91%

Effects of Increasing Soil Fluoride on the Growth of Vegetation in the Vicinity of Brick Kilns: A Case Study from Rawalpindi, Pakistan

Bano

Khayyam

Khalid³

2020

Pol. J. Environ. Stud.

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“…However, these microstructured SHS may require additional low-surface-energy coatings, e.g., polytetrafluoroethylene, fluoroalkylsilanes, and perfluorinated fluids, to achieve and stabilize their superhydrophobic properties such as self-cleaning, droplet bouncing, and liquid repellency. Serious health and environmental concerns are raised by the usage of the traditional fluorinated molecules, such as their toxicity to plants [9]. To address this issue, biocompatible fluorinated molecules, e.g., perfluoropolyether, were used to construct omniphobic surfaces and SHS via one-step 3D printing and stereolithography prototyping methods, respectively [10,11].…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Superhydrophobic Surface Constructed from Hydrophilic Building Blocks: A Case Study of Core–Shell Polypyrrole-Coated Copper Nanoneedles

Liu

Wang

et al. 2020

Coatings

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Hydrophilic polypyrrole-coated copper nanoneedles (PPy-CuNDs) were synthesized and utilized to construct a superhydrophobic surface on a polyethylene terephthalate fabric (PET) by using the spray-coating technique. The morphology of the as-synthesized PPy-CuNDs can be facilely tuned by changing the concentration of the reducing agent: hydrazine monohydrate. The CuNDs with well-defined nanocrystalline structures and nanoscale thick, rough PPy coating layers were formed simultaneously in one pot. The PPy-CuNDs self-assembled into an entangled, stacking nanocarpet on the surface of the PET fabric, and they eventually formed a reentrant surface texture similar to that of chrysanthemum leaves. The PPy-CuND-PET surface initially showed good superhydrophobic properties, but a fast transition from the superhydrophobic state to the highly adhesive state was observed. The underlying mechanism of this transition and its potential applications were proposed in the context.

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“…Fluoride occurrence in the environment, e.g. air, water and soil, is well explained by Singh et al (2018), demonstrating that some natural and anthropogenic sources are the main contributory factors. Significantly, soil contains more than 5000 mg F/kg approximately, caused by ejected ash volcanic ash and other fertilizers (Singh et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Treatment of fluoride-contaminated water. A review

Kumar¹,

Suganya²,

Srinivas³

et al. 2019

Environ Chem Lett

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Delivering the right amount of fluoride to drinking water protects the teeth from decay and reduces the risk of cavities. Nonetheless, fluorosis has been diagnosed as the result of excessive exposure of fluoride, which induces brain impairment, muscle disorders and hyperactivity. Fluoride ingestion during the formation of the tooth enamel is the main reason for fluorosis, which is characterized by hypomineralization. Dissolution of fluoride-containing rock minerals contributes to naturally occurring fluoride contamination in water. The intentional addition of fluoride to water in dental care is alarming in growing countries such as India. This article reviews the origin of fluoride, the analysis of fluoride derivatives and the technologies to remove fluoride from water. The manuscript presents adsorption techniques for fluoride removal, using different types of adsorbents. The adsorption capacities of adsorbents under various conditions, such as contaminant concentration, adsorbent dosage, time, pH and temperature, are presented. Adsorbent types include alumina, zeolites, organic waste, shell-based and carbon-based including graphite and carbon nanotubes. Defluoridation of water using clays and muds, modified activated alumina, chitosan derivatives and composites are also discussed.

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Fluoride distribution and contamination in the water, soil and plants continuum and its remedial technologies, an Indian perspective– a review

Cited by 196 publications

References 83 publications

Effects of Increasing Soil Fluoride on the Growth of Vegetation in the Vicinity of Brick Kilns: A Case Study from Rawalpindi, Pakistan

Effects of Increasing Soil Fluoride on the Growth of Vegetation in the Vicinity of Brick Kilns: A Case Study from Rawalpindi, Pakistan

Bioinspired Superhydrophobic Surface Constructed from Hydrophilic Building Blocks: A Case Study of Core–Shell Polypyrrole-Coated Copper Nanoneedles

Treatment of fluoride-contaminated water. A review

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