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- W1569253606 abstract "Management of contaminants such as fluoride is a major public issue. Fluoride of geogenic origin in groundwater used as a source of drinking water is a major concern because fluoride content above permissible levels is responsible for human dental and skeletal fluorosis. Consequently, water sources containing elevated levels of fluoride have to be treated. Coagulation/precipitation, electrochemical, electrodialysis, reverse osmosis, adsorption and hybrid processes combining adsorption and dialysis are widely used defluoridation techniques. Currently, however, the development of cost effective and clean processes due to economic constraints and stringent environmental policies is desired. Adsorption technique is arguably one of the most versatile of all the defluoridation techniques due to a number of reasons such as cost, diverse end-uses, socio-cultural acceptance, regulatory compliance, environmental benignity and simplicity. For this technique, activated alumina, bone char and clay adsorption media are the most developed. During the past two decades, extensive research has focused on a number of alternative adsorbents, some exhibiting improved fluoride sorption performances while at the same time do not alter the quality of treated water. Studies have also shifted toward systematic modeling to approximate adsorber design parameters. In view of these, this review opens with a description of paradigm shifts in drinking water sources and highlights the genesis and toxicological effects of fluoride in drinking water as a means of defining the existing problem. Next, potential and established techniques for defluoridation are revisited. This is closely followed with a review of defluoridation adsorbents recognized by the World Health Organization and those novel defluoridation adsorbents reported in literature over the last two decades, with special reference to drinking water. Emphasis is laid on their availability, fluoride sorption capacity and mechanisms. In recognizing surface-tailored zeolite as a novel sorbent, detailed analysis of fluoride adsorption behavior is provided for this sorbent. Finally, defluoridation adsorption unit configurations, and challenges to and prospects for their implementation are briefly discussed." @default.
- W1569253606 created "2016-06-24" @default.
- W1569253606 creator A5005312748 @default.
- W1569253606 creator A5065949026 @default.
- W1569253606 date "2006-01-01" @default.
- W1569253606 modified "2023-10-14" @default.
- W1569253606 title "Chapter 1 Fluoride Removal from Water Using Adsorption Technique" @default.
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- W1569253606 doi "https://doi.org/10.1016/s1872-0358(06)02001-x" @default.
- W1569253606 hasPublicationYear "2006" @default.
- W1569253606 type Work @default.