Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Defluoridation"”.
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Defluoridation of typical eastern Virginia groundwater
Groundwater on the eastern coast of the State of Virginia exceeds the Environmental Protection Agency Maximum Contaminate Level (MCL) for fluoride. This thesis explores the use of alum and alum and lime for the reduction of fluoride to the MCL or lower. In order to reduce an initial fluoride …
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Defluoridation of Water Using Silica Based Aluminum Coated Adsorbents
Fluoride contamination in drinking water poses serious global health concerns, including fluorosis, cancer, and organ damage. To address this, the present study developed and evaluated aluminum-coated silica-based adsorbents for effective and sustainable fluoride removal. Silica sand and …
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Probing structure-property relationships of calcium hydroxyapatite defluoridation to enhance performance
Fluoride (F-) is one of the most significant inorganic contaminants endemic to groundwaters worldwide. An estimated 200 million people, mostly in rural low-income regions, have or risk incurring fluorosis because they consume water with F- levels above the World Health Organization’s (WHO) …
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Defluoridation using modified mucilage from indigenous plant material in Vhembe District, Limpopo Province, South Africa
Access to clean and safe water is one of the Sustainable Development Goals. Unfortunately, it has been reported that groundwater, as another source of water has elevated fluoride levels exceeding the World Health Organisation permissible limit of 1.5 mg/L in some regions around the world. This …
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Fabrication of metal-oxide modified porous ceramic granules from aluminosilicate clay soils for defluoridation of groundwater
… corn starch and evaluating their performances in defluoridation of groundwater. The raw clay materials were mechanochemically activated for 5, 10, 15 and 30 minutes for physicochemical transformation of the solid aggregate. The morphology of the samples showed the honeycomb structure. The surface …
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Effects of various aqueous environmental conditions on the removal of fluoride in fixed bed column reactors packed with calcium hydroxyapatite pellets
… from water. Understanding the mechanisms of defluoridation by hydroxyapatite is fundamental to establishing a way to move forward in the development of more effective fluoride adsorbents. Fixed-bed column tests were conducted using hydroxyapatite pellets as the adsorbent material. The nature …
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Synthesis of Zr4+/Ag+ metal oxides modified zeolite for application in fluoride and pathogens removal from water
… to hydroxy sodalite mineral phases. Preliminary defluoridation experiments were conducted on all hydrothermally treated samples, with the sample prepared at 2 hours sonication, 105°C hydrothermal treatment, and 1 hour 30 minutes exhibiting a capacity for adsorbing fluoride of 0.19 mg/g hence, …
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Assessment of groundwater quality and community’s experiences in relation to water quantity and quality challenges in Lephalale Municipality, Waterberg District, Limpopo Province in South Africa
The aim of this study was to assess the water quality of groundwater utilized for domestic and irrigation purposes in Lephalale Municipality, interrogate the community's experiences and issues related to water quality and supply in Lephalale local municipality, Waterberg district in Limpopo …