latest news: Water Treatment
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NMSU student receives fellowship to develop filter that removes arsenic and fluoride from the water in Palomas, Mexico
Community Snapshot: Joshua Gomez, who earned his bachelor’s in chemical engineering from New Mexico State University, has earned a fellowship from the National GEM Consortium, tuition for his master’s degree, a stipend for other expenses and two summers of experience conducting research at a national laboratory. As a freshman, Gomez received Environmental Protection Agency funding through NMSU’s Water […]Mexico Water Treatment
Removal of Fluoride from Drinking Water by Sorption Using Diatomite Modified with Aluminum Hydroxide.
Exposure to fluoride beyond the recommended level for longer duration causes both dental and skeletal fluorosis. Thus, the development of cost-effective, locally available, and environmentally benign adsorbents for fluoride removal from contaminated water sources is absolutely required. In the present study, diatomaceous earth (diatomite) locally available in Ethiopia, modified by treating it with an aluminum […]Ethiopia Water Treatment
Spanish, Ethiopian scientists deliver new tech to reduce fluorosis
Millions of Ethiopians are exposed to fluorosis, a bone disease caused by drinking Rift Valley water tainted with high levels of naturally occurring fluoride. Now scientists say they have a solution, and they found it in another type of abundant mineral in the region called zeolites. On Saturday, the researchers from Spain’s Higher Council for […]Ethiopia Water Treatment
One-step synthesis of zirconium dioxide-biochar derived from Camellia oleifera seed shell with enhanced removal capacity for fluoride from water.
Note from Fluoride Action Network: “Since all methods [to remove fluoride] produce a sludge with very high concentration of fluoride that has to be disposed of, only water for drinking and cooking purposes should be treated, particularly in the developing countries.” Reference: Fluorosis (see Interventions), World Health Organization Highlights Camellia seed shell waste was calcined […]International Water Treatment
Effective fluoride adsorption using water hyacinth beads doped with hydrous oxides of aluminium and iron.
Note from Fluoride Action Network: “Since all methods [to remove fluoride] produce a sludge with very high concentration of fluoride that has to be disposed of, only water for drinking and cooking purposes should be treated, particularly in the developing countries.” Reference: Fluorosis (see Interventions), World Health Organization Highlights Hydrous oxides of aluminium, iron and […]International Water Treatment
Stochastic Modeling of Groundwater Fluoride Contamination: Introducing Lazy Learners.
Abstract While it remains the primary source of safe drinking and irrigation water in northwest Iran’s Maku Plain, the region’s groundwater is prone to fluoride contamination. Accordingly, modeling techniques to accurately predict groundwater fluoride concentration are required. The current paper advances several novel data mining algorithms including Lazy learners [Instance-Based K-nearest Neighbours (IBK); Locally Weighted […]Iran Water Treatment
Simplified Batch and Fixed-Bed Design System for Efficient and Sustainable Fluoride Removal from Water Using Slow Pyrolyzed Okra Stem and Black Gram Straw Biochars
Abstract Okra stem biochar (OSBC) and black gram straw biochar (BGSBC) were prepared by slow pyrolysis at 500 and 600 °C, respectively. OSBC and BGSBC were characterized using SBET, Fourier transform infrared, X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy, SEM–energy dispersive X-ray, and energy dispersive X-ray fluorescence. High carbon contents (dry basis) of […]International Water Treatment
The role of fluoroaluminate complexes on the adsorption of fluoride onto hydrous alumina in aqueous solutions
Note from Fluoride Action Network: “Since all methods [to remove fluoride] produce a sludge with very high concentration of fluoride that has to be disposed of, only water for drinking and cooking purposes should be treated, particularly in the developing countries.” Reference: Fluorosis (see Interventions), World Health Organization Abstract Activated alumina (AA) has been extensively […]International Water Treatment
Fluoride removal by Ca-Al-CO3 layered double hydroxides at environmentally-relevant concentrations.
Highlights Ca–Al–CO3 layered double hydroxides showed affinity for F– at 2–12 mg/L. A higher F– removal capacity at lower pH and lower temperature was observed. Only marginal defluorination improvements by calcination/microwave treatment. Fast F– uptake during the initial 20?min and little anions competition was observed. F– removal capacity is not necessarily reflected in specific surface […]International Water Treatment
Concentration effect and operational parameters on electrodialysis reversal efficiency applied for fluoride removal in groundwater
Abstract The increase in dental fluorosis in young people shows that the methods used to tackle the disease are ineffective. Typically, people around the world use groundwater for most activities, and this is the case of people especially in western Bahia, Brazil. In this region, aquifers can contain anomalous concentrations of fluoride. Thus, it is […]Brazil Water Treatment