Defluoridation may be undertaken by individuals of their drinking water, whether occurring naturally or where their municipality has put sodium fluoride into the drinking supply. The first paper for seminar report discussed the process of  Defluoridation of groundwater using corn cobs powder as a natural adsorbent using a fabricated filter. Defluoridation may be underaken for naturally occuring fluoride in ground water by municipalities. This is crucial for the application of this adsorbent, since defluoridation can be carried out at the normal pH of the groundwater with no adjustment unlike most other adsorbents. Worldwide, fluoride is one of the most abundant anions present in groundwater. The best seminar topics are topics that lend themselves to being presented in a seminar-style of presentation. In this modern era, it seems like everything is constantly changing and getting better around us. This is crucial for the application of this adsorbent, since defluoridation can be carried out at the normal pH of the groundwater with no adjustment unlike most other adsorbents. DEFLUORIDATION; Defluoridation may be underaken for naturally occuring fluoride in ground water by municipalities. Here we have uploaded various approaches of defluoridation of groundwater. The Fe3+-modified bentonite was effective in F− removal in high fluoride borehole water samples. Areas of high rainfall, such as humid tropical regions, are expected to have low fluoride concentration in groundwater because soluble ions such as fluoride are leached out and diluted. Fluoride is more present in groundwater than surface water mainly due to the leaching of minerals. Civil Engineering Seminar topic: Defluoridation of Ground Water. Defluoridation of Groundwater Using Termite Mound Defluoridation of Groundwater Using Termite Mound Fufa, Fekadu; Alemayehu, Esayas; Lennartz, Bernd 2013-04-17 00:00:00 Water Air Soil Pollut (2013) 224:1552 DOI 10.1007/s11270-013-1552-y Fekadu Fufa & Esayas Alemayehu & Bernd Lennartz Received: 12 January 2013 /Accepted: 28 March 2013 /Published online: 17 April 2013 … • Defluoridation is defined as, ‘the downward adjustment of level of fluoride in drinking water to the optimal level’ “the one that can arrest the prevalence of dental caries from causing a insignificant amount of fluorosis” DEFINITION 4. Register to receive personalised research and resources by email, Environmental Remediation and Water Pollution Chemistry Research Group, Department of Ecology and Resources Management, University of Venda, Private bag X5050, Thohoyandou, 0950 Limpopo, South Africa, Tel. The results indicate that Fe3+-modified bentonite has potential for application in groundwater defluoridation and more so as a candidate adsorbent for point of use water defluoridation systems for household use in rural areas in South Africa. Groundwater is the most appropriate and widely used source of drinking water for many rural communities in Sub-Saharan Africa. Defluoridation of groundwater using aluminum-coated bauxite: Optimization of synthesis process conditions and equilibrium study. Fe3+ bentonite exhibited ≈100% F− removal as opposed to unprocessed bentonite <5% at initial concentration of 10 ppm F−. 1. Fluoride is more present in groundwater than surface water mainly due to the leaching of minerals. Haldar A., Pal B., Gupta A. The objective of this study was to evaluate the use of iron (Fe) electrodes (mild steel) for defluoridation of groundwater using EC and filtration in continuous-flow mode. The adsorbents used in this investigation are amla powder, coconut shell powder, neem powder, and turmeric powder. Defluoridation methods and required materials 5. 5 Howick Place | London | SW1P 1WG. Studies reveal that in some of the boreholes, F− concentration may be way beyond the recommended limits for drinking water. Registered in England & Wales No. The adsorbents were exposed to water containing 10 ppm fluoride for 24 h, repeatedly for several days, and the defluoridation effectiveness was determined from the residual fluoride concentration in the 24 h treated water .It could be seen that the adsorbents prepared from amorphous CaCO 3 or limestone chips rapidly lost their ability to remove fluoride, and resulted in higher than safe … Groundwater is an important source of drinking water. 3099067 The adsorption process was also observed to be favorable at room temperature. Defluoridation may be undertaken by individuals of their drinking water, whether occurring naturally or where their municipality has put sodium fluoride into the drinking supply. Defluoridation is the downward adjustment of the level of fluoride in drinking water. Defluoridation of groundwater using mechanochemically-activated clay soil. Ground waters are much more vulnerable to fluoride enrichment than surface waters because of the greater impacts of water-rock reactions in aquifers. Get Latest Information on Recent Seminar Topics via Email. Some of the adsorbents are very effective in removal of fluoride ion& can be used a defluoridating agents but they impart color and turbidity to the treated drinking water. Defluoridation by Natural Method in the Groundwater of Tiruchengode Taluk, Namakkal District - written by A. Arun Kumar, S. M. Mazhar Nazeeb Khan published on 2018/04/24 download full article with reference data and citations a Department of Ecology and Resource Management, University of Venda, Thohoyandou, South Africa. Ground waters are much more vulnerable to fluoride enrichment than surface waters because of the greater impacts of water-rock reactions in aquifers. More than 200 million people worldwide majority from the developing world are drinking groundwater with fluoride concentrations greater than the WHO guideline value of 1.5mg/l. J Environ Manage. The World Health Organizationhas recommended a guideline value of 1.5 mg/L as the concentration above … E-mail: masindie@yahoo.com. We use cookies to improve your website experience. An excess of fluoride in drinking water causes dental fluorosis and skeletal fluorosis. (2019) Community-Based Defluoridation of Groundwater by Electrocoagulation Followed by Activated Alumina Adsorption. Use of the fluorogenic Al 3+ –quinolinyl-azo-naphtholato complex for the determination of F − in aqueous medium by visible light excitation and application in ground water fluoride analysis. Masindi E. Denga; Masindi E. Denga *. Analytical Methods 2019 , 11 (35) , 4440-4449. Defluoridation in the presence of high calcium levels in potable groundwater is paramount, as the consumption of groundwater enriched with fluoride, and calcium has been implicated in causing chronic kidney disease of unknown etiology (CKDu) in Sri Lanka. There are many adverse effects of fluoride on human health such as Skeletal fluorosis, Dental fluorosis, Risk of fractures in bones, … The adsorption data fitted well to Langmuir adsorption model indicating a monolayer coverage of the adsorbent. Fluoride is one of the very few chemicals that have shown to cause significant effects in people through drinking water. The influence of climate on fluoride concentration in groundwater is largely attributed to the effect that rainfall has on recharge rate and groundwater flow. Worldwide, fluoride is one of the most abundant anions present in groundwater. A series of batch adsorption experiments were carried out to evaluate parameters that influence the adsorption process. Groundwater accounts for 98 … The results show that the filtration with corn cobs powder reduces the fluoride content for the samples. High fluoride uptake capacity of up to 275mg/kg was obtained for the raw bauxite. The study mainly focused on investigating the effects of varying synthesis process conditions on the defluoridation efficiency of Granular Aluminum Coated Bauxite (GACB). ( eds ) ground water Development - Issues and Sustainable Solutions: Ray S. ( eds ) ground by! Themselves to being presented in a seminar-style of presentation shell powder, and turmeric powder was! 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