a Department of Ecology and Resource Management, University of Venda, Thohoyandou, South Africa. Fluoride is one of the very few chemicals that have shown to cause significant effects in people through drinking water. An excess of fluoride in drinking water causes dental fluorosis and skeletal fluorosis. Defluoridation of the water sample was done in a model domestic defluoridation unit in batch mode to optimize raw bauxite dosage and contact time. We use cookies to improve your website experience. In this modern era, it seems like everything is constantly changing and getting better around us. Fluoride is one of the very few chemicals that have shown to cause significant effects in people through drinking water. * Corresponding author. Studies reveal that in some of the boreholes, F− concentration may be way beyond the recommended limits for drinking water. There are many adverse effects of fluoride on human health such as Skeletal fluorosis, Dental fluorosis, Risk of fractures in bones, Immune deficiency and may leads to Cancer. Researching trending topics i... विद्यार्थियों के लिए प्रेजेंटेशन का महत्व प्रेजेंटेशन (presentation) देना शैक्षणिक पाठ्यक्रम का एक महत्वपूर्ण व्यावहारिक पाठ्यक्रम है, ... Coronavirus Pandemic and Environment The global lockdown caused by the COVID-19 (coronavirus) pandemic has resulted in numerous impacts o... Seminar Topics, Presentation and Reports Download | 2020, Latest Seminar Topics | Reports | Journals | Presentations | 2020, Low Cost Defluoridation of Ground Water Seminar Report, Top 10 Latest Seminar Topics for Computer Science To Select in 2020, 40 Best Seminar Topics on IoT | IEEE Journals [Download PDF], 100+ Seminar Topics for Youth, Teenagers, College Students, 100 PowerPoint Presentation Topics in Hindi (Download PPT), Impact of COVID-19 Pandemic on the Environment: PPT | PDF Report, ‍ Seminar Topics for CSE Computer Science Engineering, ⚙️ Seminar Topics for Mechanical Engineering ME, Seminar Topics for ECE Electronics and Communication, ⚡️ Seminar Topics for Electrical Engineering EEE, ‍♂️ Seminar Topics for Civil Engineering, Seminar Topics for Production Engineering, ‍ Chemistry Investigatory Projects Topics, ⚗️ Inorganic Chemistry Presentation Topics, Environment Related Presentation Topics, Chemistry: Interesting Presentation Topics, Informative and Persuasive Speech Topics on Animals, Informative and Persuasive Speech Topics on Automotives, Ideas to Choose Right Informative Speech, ‍ Informative Speech Topics For College Students, Informative Speech Topics on Science and Technology. Defluoridation of groundwater using mechanochemically-activated clay soil. By closing this message, you are consenting to our use of cookies. The results show that the filtration with corn cobs powder reduces the fluoride content for the samples. 1. • 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. Defluoridation is the downward adjustment of the level of fluoride in drinking water. In: Ray S. (eds) Ground Water Development - Issues and Sustainable Solutions. 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. Groundwater is the most appropriate and widely used source of drinking water for many rural communities in Sub-Saharan Africa. 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. Drinking groundwater sample of high fluoride concentration (6.17 mg/L) was collected from a borehole in Machinga district of Southern Malawi where dental fluorosis is prevalent due to the high fluoride. Ground waters are much more vulnerable to fluoride enrichment than surface waters because of the greater impacts of water-rock reactions in aquifers. All adsorbents used are inexpensive and nontoxic materials, available easily in nature and locally at village/rural level. Defluoridation of groundwater using aluminum-coated bauxite: Optimization of synthesis process conditions and equilibrium study. 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 undertaken by individuals of their drinking water, whether occurring naturally or where their municipality has put sodium fluoride into the drinking supply. Defluoridation methods and required materials 5. Here we have uploaded various approaches of defluoridation of groundwater. The influence of climate on fluoride concentration in groundwater is largely attributed to the effect that rainfall has on recharge rate and groundwater flow. 2016 Oct 1;181:108-117. doi: 10.1016/j.jenvman.2016.06.011. J Environ Manage. Haldar A., Pal B., Gupta A. The raw unprocessed bentonite clay was observed to increase the pH of the F− solution as opposed to the Fe3+-modified bentonite. Fluoride is more present in groundwater than surface water mainly due to the leaching of minerals. Worldwide, fluoride is one of the most abundant anions present in groundwater. Defluoridation may be underaken for naturally occuring fluoride in ground water by municipalities. 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 … The Fe3+-modified bentonite was effective in F− removal in high fluoride borehole water samples. Worldwide, fluoride is one of the most abundant anions present in groundwater. Defluoridation is the downward adjustment of the level of fluoride in drinking water. The authors wish to express their gratitude to University of Venda Research and Innovation Directorate, Department of Ecology and Resources Management, ESKOM-TESP for the support and funding of this study. The bauxite exhibited defluoridation efficiency of up to 96.1% for groundwater with a fluoride concentration of 6.17mg/L at a bauxite dosage of 0.120kg/L. The adsorbents used in this investigation are amla powder, coconut shell powder, neem powder, and turmeric powder. Various types of Fluoride exist. Fe3+ bentonite exhibited ≈100% F− removal as opposed to unprocessed bentonite <5% at initial concentration of 10 ppm F−. 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 best seminar topics are topics that lend themselves to being presented in a seminar-style of presentation. +27 15 962 8572, Department of Hydrology and Water Resources, School of Environmental Studies, University of Venda, Private bag X5050, Thohoyandou, 0950 Limpopo, South Africa, /doi/full/10.1080/19443994.2013.855669?needAccess=true. 3099067 To learn about our use of cookies and how you can manage your cookie settings, please see our Cookie Policy. 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 of groundwater using mechanochemically-activated clay soil Masindi E. Denga; Masindi E. Denga * a Department of Ecology and Resource Management, University of Venda, Thohoyandou, South Africa * Corresponding author. 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. E-mail: masindie@yahoo.com. Groundwater accounts for 98 … 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. 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 … Ground waters are much more vulnerable to fluoride enrichment than surface waters because of the greater impacts of water-rock reactions in aquifers. 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