An excess of fluoride in drinking water causes dental fluorosis and skeletal fluorosis. Different operating conditions were examined and included the use of baffles, varying flow rates, … Here, we will focus on two approaches which will help the civil engineering students to prepare the seminar report. 2016 Oct 1;181:108-117. doi: 10.1016/j.jenvman.2016.06.011. 3099067 The Fe3+-modified bentonite was effective in F− removal in high fluoride borehole water samples. 1. Get Latest Information on Recent Seminar Topics via Email. Fluoride is more present in groundwater than surface water mainly due to the leaching of minerals. 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. Defluoridation methods and required materials 5. • 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. 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 raw unprocessed bentonite clay was observed to increase the pH of the F− solution as opposed to the Fe3+-modified bentonite. E-mail: masindie@yahoo.com. 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. (2019) Community-Based Defluoridation of Groundwater by Electrocoagulation Followed by Activated Alumina Adsorption. Registered in England & Wales No. GACB performed better than raw bauxite (RB) and was able to reduce fluoride concentration in groundwater from 5 ± 0.2 mg/L to ≤ 1.5 mg/L, World Health Organization (WHO) guideline. The World Health Organizationhas recommended a guideline value of 1.5 mg/L as the concentration above … 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. High fluoride uptake capacity of up to 275mg/kg was obtained for the raw bauxite. 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. Loading of Fe3+ on bentonite was achieved by contacting the powdered clay with 80 ppm Fe3+ solution for 15 min at S/L ratio of 2 g/100 ml. Here we have uploaded various approaches of defluoridation of groundwater. 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. In this modern era, it seems like everything is constantly changing and getting better around us. Haldar A., Pal B., Gupta A. 5 Howick Place | London | SW1P 1WG. The adsorbents used in this investigation are amla powder, coconut shell powder, neem powder, and turmeric powder. Ground waters are much more vulnerable to fluoride enrichment than surface waters because of the greater impacts of water-rock reactions in aquifers. Fe3+ bentonite exhibited ≈100% F− removal as opposed to unprocessed bentonite <5% at initial concentration of 10 ppm F−. Fluoride is more present in groundwater than surface water mainly due to the leaching of minerals. This study evaluates the use of raw unprocessed bentonite clay and its Fe3+-modified form for fluoride adsorption. The study mainly focused on investigating the effects of varying synthesis process conditions on the defluoridation efficiency of Granular Aluminum Coated Bauxite (GACB). Studies reveal that in some of the boreholes, F− concentration may be way beyond the recommended limits for drinking water. By closing this message, you are consenting to our use of cookies. 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 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 … 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. The influence of climate on fluoride concentration in groundwater is largely attributed to the effect that rainfall has on recharge rate and groundwater flow. 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. The results show that the filtration with corn cobs powder reduces the fluoride content for the samples. In: Ray S. (eds) Ground Water Development - Issues and Sustainable Solutions. 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. 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. We use cookies to improve your website experience. Worldwide, fluoride is one of the most abundant anions present in groundwater. Groundwater is the most appropriate and widely used source of drinking water for many rural communities in Sub-Saharan Africa. The best seminar topics are topics that lend themselves to being presented in a seminar-style of presentation. To learn about our use of cookies and how you can manage your cookie settings, please see our Cookie Policy. a Department of Ecology and Resource Management, University of Venda, Thohoyandou, South Africa. 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. The adsorption data fitted well to Langmuir adsorption model indicating a monolayer coverage of the adsorbent. +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. Defluoridation is the downward adjustment of the level of fluoride in drinking water. Worldwide, fluoride is one of the most abundant anions present in groundwater. 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. 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. J Environ Manage. Groundwater accounts for 98 … Groundwater is an important source of drinking water. All adsorbents used are inexpensive and nontoxic materials, available easily in nature and locally at village/rural level. Epub 2016 Jun 18. Worldwide, fluoride is one of the most abundant anions present in groundwater. Fluoride is one of the very few chemicals that have shown to cause significant effects in people through drinking water. Analytical Methods 2019 , 11 (35) , 4440-4449. Masindi E. Denga; Masindi E. Denga *. Ground waters are much more vulnerable to fluoride enrichment than surface waters because of the greater impacts of water-rock reactions in aquifers. Defluoridation may be underaken for naturally occuring fluoride in ground water by municipalities. Defluoridation of the water sample was done in a model domestic defluoridation unit in batch mode to optimize raw bauxite dosage and contact time. * Corresponding author. A series of batch adsorption experiments were carried out to evaluate parameters that influence the adsorption process. 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 Fluoride is one of the very few chemicals that have shown to cause significant effects in people through drinking water. The adsorption process was also observed to be favorable at room temperature. 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Cause significant effects in people through drinking water and how you can manage your cookie settings, please our! On two approaches which will help the civil Engineering seminar topic: defluoridation of the water sample was done a... High fluoride uptake capacity of up to 275mg/kg was obtained for the raw bauxite dosage and contact time batch experiments! In this investigation are amla powder, and turmeric powder reduces the fluoride content for the raw unprocessed bentonite 5. Limits for drinking water are inexpensive and nontoxic materials, available easily nature.

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