A review of emerging adsorbents and current demand for defluoridation of water: Bright future in water sustainability

Yadav, Krishna Kumar; Gupta, Neha; Kumar, Vikash; Khan, Shumaila; Kumar, Amit

doi:10.1016/j.envint.2017.11.014

Cited by 214 publications

(83 citation statements)

References 206 publications

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“…The highest concentration of 4.12 mg L À1 was reported at Shahganj, which has potential to cause uorosis with long-term damage to the brain, liver, thyroid and kidneys. 48,49 The spatial distribution of uoride in the groundwater of the study area is shown in Fig. 5.…”

Section: Major Anions and Cations In Groundwatermentioning

confidence: 99%

GIS-based evaluation of groundwater geochemistry and statistical determination of the fate of contaminants in shallow aquifers from different functional areas of Agra city, India: levels and spatial distributions

et al. 2018

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Section: Major Anions and Cations In Groundwatermentioning

confidence: 99%

GIS-based evaluation of groundwater geochemistry and statistical determination of the fate of contaminants in shallow aquifers from different functional areas of Agra city, India: levels and spatial distributions

et al. 2018

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“…Bromide may interfere with thyroid homeostasis, particularly competing with I uptake and I clearance [119,120] however, human toxicity data demonstrated that polybrominated compounds may interfere with gonadal function and sexual steroids' metabolism [118]. Fluoride and fluorinated compounds has been found in different rock-forming minerals, fertilizers, pesticides, and propellants, and has also been found in drinking water generally at acceptable levels according to regulatory agencies (<1.5 mg/L or <4 mg/L) [121] and groundwater [122]. Considering that a low dose of fluoride increases overall oral health, several countries add it to their public water supply at 0.7 to 1.5 mg/L [118].…”

Section: Overview On Other Halogenate Compoundsmentioning

confidence: 99%

Interference on Iodine Uptake and Human Thyroid Function by Perchlorate-Contaminated Water and Food

et al. 2020

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Background: Perchlorate-induced natrium-iodide symporter (NIS) interference is a well-recognized thyroid disrupting mechanism. It is unclear, however, whether a chronic low-dose exposure to perchlorate delivered by food and drinks may cause thyroid dysfunction in the long term. Thus, the aim of this review was to overview and summarize literature results in order to clarify this issue. Methods: Authors searched PubMed/MEDLINE, Scopus, Web of Science, institutional websites and Google until April 2020 for relevant information about the fundamental mechanism of the thyroid NIS interference induced by orally consumed perchlorate compounds and its clinical consequences. Results: Food and drinking water should be considered relevant sources of perchlorate. Despite some controversies, cross-sectional studies demonstrated that perchlorate exposure affects thyroid hormone synthesis in infants, adolescents and adults, particularly in the case of underlying thyroid diseases and iodine insufficiency. An exaggerated exposure to perchlorate during pregnancy leads to a worse neurocognitive and behavioral development outcome in infants, regardless of maternal thyroid hormone levels. Discussion and conclusion: The effects of a chronic low-dose perchlorate exposure on thyroid homeostasis remain still unclear, leading to concerns especially for highly sensitive patients. Specific studies are needed to clarify this issue, aiming to better define strategies of detection and prevention.

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“…Adsorption has been recognized as an effective technique for the removal of fluoride from water sources [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of fluoride by porous adsorbents: Estimating pore diffusion coefficients from batch kinetic data

Yuan

Zhao²,

Chu³

2019

Environmental Engineering Research

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A simple method is presented for extracting pore diffusion coefficients from batch adsorption kinetic data. The method employs the classic Langmuir kinetics model which is characterized by a single rate coefficient. An analytical solution in the form of a simple algebraic equation is available for this rate model. Fitting the algebraic equation to batch kinetic data to determine the rate coefficient is straightforward and can be conveniently accomplished using standard spreadsheet programs. The resultant rate coefficient can be converted to the pertinent pore diffusion coefficient via a separate algebraic expression. The proposed modeling approach provides accurate fits of experimental kinetic data taken from the literature and yields acceptable errors in the best estimates for pore diffusion coefficients. Specific examples discussed are the adsorption of fluoride by bone char and laterite adsorbents.

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A review of emerging adsorbents and current demand for defluoridation of water: Bright future in water sustainability

Cited by 214 publications

References 206 publications

GIS-based evaluation of groundwater geochemistry and statistical determination of the fate of contaminants in shallow aquifers from different functional areas of Agra city, India: levels and spatial distributions

GIS-based evaluation of groundwater geochemistry and statistical determination of the fate of contaminants in shallow aquifers from different functional areas of Agra city, India: levels and spatial distributions

Interference on Iodine Uptake and Human Thyroid Function by Perchlorate-Contaminated Water and Food

Adsorption of fluoride by porous adsorbents: Estimating pore diffusion coefficients from batch kinetic data

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