fluoride in drinking water and its removal pdf

Fluoride In Drinking Water And Its Removal Pdf

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Published: 01.06.2021

Removal of Fluoride from Drinking Water Using Modified Immobilized Activated Alumina

These metrics are regularly updated to reflect usage leading up to the last few days. Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts. The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric. Find more information on the Altmetric Attention Score and how the score is calculated. Higher intake of fluoride can cause potential health hazards.

Removal of Fluoride from Drinking Water Using Modified Immobilized Activated Alumina

Ruwanthi W. Premathilaka, Nalinda D. Arising awareness of health hazards due to long-term exposure of fluoride has led researchers to seek for more innovative strategies to eliminate excess fluoride in drinking water. Fluoride-bearing chemicals in both natural and anthropogenic sources contaminate drinking water, which mainly cause for human fluoride ingestion. Hence, developing sustainable approaches toward alleviation is essential.

Removal of Fluoride from Drinking Water Using Modified Immobilized Activated Alumina

Box: , Nekemte, Ethiopia. Box: 19, Ambo, Ethiopia. The data used to support the results of this study are included within the article, and any further information is available from the corresponding author upon request. Exposure to fluoride beyond the recommended level for longer duration causes both dental and skeletal fluorosis. Thus, the development of cost-effective, locally available, and environmentally benign adsorbents for fluoride removal from contaminated water sources is absolutely required.

The effects of operating parameters such as pH, initial concentration, adsorbent dose, contact time, agitation speed and temperature were analysed using response surface methodology. The significance of independent variables and their interactions were tested by the analysis of variance and t test statistics. Fluoride adsorption kinetics followed pseudo-second-order model with high correlation of coefficient value 0. On the other hand, thermodynamic data suggest that adsorption is favoured at lower temperature, exothermic in nature and enthalpy driven. The adsorbents were characterised through scanning electron microscope, Fourier transform infrared spectroscopy and point of zero charges pH ZPC ranges from pH 6.

Fluoride in Drinking Water and Nanotechnological Approaches for Eliminating Excess Fluoride

Box: , Nekemte, Ethiopia. Box: 19, Ambo, Ethiopia. Exposure to fluoride beyond the recommended level for longer duration causes both dental and skeletal fluorosis.

Fluoride contamination has been recognised as one of the major problems worldwide, imposing a serious threat to human health and affecting the safety of drinking water. Adsorption is one of the widely considered appropriate technologies for water defluorination. The present study describes the preparation of a zirconium-based metal organic framework MOF adsorbent using a solvothermal method and its adsorption efficiency for removal of fluoride ions from water. It was found that the synthesized MOF showed the distinguishable octahedral shape particle with a lattice spacing of 0. Adsorption studies were carried out to study the defluorination effectiveness by varying contact time 30— min , adsorbent dose 0.

Drinking water quality and fluoride concentration. Universidade Federal de Santa Catarina. Faculdade de Odontologia de Piracicaba. This paper aimed to analyze the fluoride concentration in drinking water, taking into account the balance between the benefits and risks to health, in order to produce scientific backing for the updating of the Brazilian legislation. Systematic reviews studies, official documents and meteorological data were examined. The temperatures in Brazilian state capitals indicate that fluoride levels should be between 0. Natural fluoride concentration of 1.


The equilibrium data have been analyzed by the Langmuir, Freundlich and Tempkin isotherm models, the experimental data were better fitted to the. Langmuir.


И в следующее мгновение не осталось ничего, кроме черной бездны. ГЛАВА 102 Стратмор спустился на нижний этаж ТРАНСТЕКСТА и ступил с лесов в дюймовый слой воды на полу. Гигантский компьютер содрогался мелкой дрожью, из густого клубящегося тумана падали капли воды.

Сьюзан прочитала открывшееся сообщение, которое состояло из одной строчки, потом прочитала его еще. ПООБЕДАЕМ У АЛЬФРЕДА. В 8 ВЕЧЕРА. В другом конце комнаты Хейл еле слышно засмеялся. Сьюзан взглянула на адресную строку сообщения.

Чтобы ключ никто не нашел, Танкадо проделал то же самое с Цифровой крепостью. Он спрятал свой ключ, зашифровав его формулой, содержащейся в этом ключе. - А что за файл в ТРАНСТЕКСТЕ? - спросила Сьюзан. - Я, как и все прочие, скачал его с сайта Танкадо в Интернете. АНБ является счастливым обладателем алгоритма Цифровой крепости, просто мы не в состоянии его открыть.

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5 comments

Finley F.

Various technologies are being used to remove fluoride from water but still the problem has not been rooted out. In this paper, a broad overview.

REPLY

Ogier M.

Aneeza Rafique, M.

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Cindy M.

Pharmaceutical technology books pdf download ssrs interview questions and answers for 3 years experienced pdf

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Viollette F.

(Parker, ; Meenakshi and Maheshwari, ) By ion-exchange process, fluoride can be removed from water by a strongly alkaline anion-.

REPLY

Enrica B.

processes for the removal of fluorides becomes essential. In drinking water (​DW), the fluorine optimal concentration is between mg L−1 and /iris/​bitstream/handle///ccofmc.org?sequence.

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