latest news: Water Treatment
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Fluoride removal by thermally treated egg shells with high adsorption capacity, low cost, and easy acquisition
In this study, the use of eggshells was suggested as an adsorbent for fluoride removal, and their mechanism of fluoride removal was investigated. The eggshells underwent thermal treatment to improve their adsorption capacity; 800 °C was found to be the optimal temperature for treatment. Eggshells thermally treated at 800 °C (ES-800) were mainly composed of […]International Water Treatment
Volcanic Rock Materials for Defluoridation of Water in Fixed-Bed Column Systems
Abstract Consumption of drinking water with a high concentration of fluoride (>1.5 mg/L) causes detrimental health problems and is a challenging issue in various regions around the globe. In this study, a continuous fixed-bed column adsorption system was employed for defluoridation of water using volcanic rocks, virgin pumice (VPum) and virgin scoria (VSco), as adsorbents. […]East African Rift Valley Water Treatment
Removal of fluoride from industrial wastewater by using different adsorbents: A review.
Highlights Sources of high fluoride industrial wastewater were summarized. Several kinds of adsorbents were reported in this literature. Four methods were put forward to enhance the performance of adsorbents. Some outlooks for removing fluoride from water by adsorption were advised in the future. Abstract Many industries such as iron and steel metallurgy, copper and zinc […]International Water Treatment
Open-Source Portable Device for the Determination of Fluoride in Drinking Water
Abstract The prolonged exposure to fluorides results in the development of several diseases, from dental fluorosis to crippling deformities of the spine and major joints. The population exposed to high fluoride concentration is located in developing countries where the assurance of water quality is difficult to perform. Addressing this challenge, an open-source system for the […]International Water Treatment
Formation and In Situ Treatment of High Fluoride Concentrations in Shallow Groundwater of a Semi-Arid Region: Jiaolai Basin, China
Abstract Fluorine is an essential nutrient, and excessive or deficient fluoride contents in water can be harmful to human health. The shallow groundwater of the Jiaolai Basin, China has a high fluoride content. This study aimed to (1) investigate the processes responsible for the formation of shallow high-fluoride groundwater (SHFGW); (2) identify appropriate methods for […]China Water Treatment
Bioaccumulation of fluoride from aqueous system and genotoxicity study on Allium cepa using Bacillus licheniformis
Abstract Highlights Efficacy of fluoride sorption by Bacillus licheniformis (KX646393) was explored. Fluoride sorption by Bacillus licheniformis (KX646393) was highly pH dependent. Fluoride was efficiently (97%) removed from contaminated ground water. SEM, TEM?EDX and FT?IR analysis authenticates the depiction of fluoride sorption. Genotoxicity on Allium cepa exposes the toxic effect of ground water fluoride. Removal […]India Water Treatment
Technology transfer of high-flow rate fluoride and iron removal developed
The Technology Transfer took place over a Virtual Platform in the presence of Prof. Harish Hirani, Director, CSIR-CMERI, Durgapur. Prof. Hirani, during the event stated, “This Community Level Water Purification System has a Flow-Rate capacity of 10,000 Ltr/hr and uses commonly available raw materials such as sand, gravel and adsorbent materials. It comprises a three-stage […]India Water Treatment
Fluoride containing water: A global perspective and a pursuit to sustainable water defluoridation management -an overview.
Highlights Fluoride level in natural waters can be exceedingly high reaching 2800 ppm F–. Contaminated water and diseases caused by fluoride are prevalent worldwide. Recent fluoride removal studies are mostly on the bench-scale phase. Investigated techniques usually omit high F– concentration wastewater (>100 ppm). Life cycle assessment and cost evaluation for defluoridation are deemed vital. […]International Water Treatment
Thermally treated Mytilus coruscus shells for fluoride removal and their adsorption mechanism.
Highlights Calcination increases fluoride adsorption capacity of Mytilus coruscus shells. An increase of calcination temperature from 700 °C to 800 °C increases fluoride removal sharply. The maximum fluoride adsorption capacity of MCS-800 is 82.93 mg/g. Fluoride removal by MCS-800 is achieved via precipitation by forming CaF2. Abstract We evaluated Mytilus coruscus shells (MCS) as an […]International Water Treatment
Effective electrochemically controlled removal of fluoride ions using electrodeposited polyaniline-carbon nanotube composite electrodes.
Highlights PANI was electrodeposited onto a CNT-based substrate. PANI was in the partially oxidized emeraldine form and could participate in redox reactions. The PANI-CNTs composite is a promising redox-active electrode material. Enhanced fluoride removal was achieved by electrochemically controlled separation. The selectivity of fluoride over chloride was significantly enhanced. Abstract The objective of this study […]International Water Treatment