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Thermal behaviors, combustion mechanisms, evolved gasses, and ash analysis of spent potlining for a hazardous waste management
Highlights Thermal degradation behaviors of spent potlining (SPL) were quantified. An exothermic reaction dominated the overall reaction process. Fluoride volatilization rate in the flue gasses was 2.24%. Kinetic triplets pointed to the best-fit reaction model as the n-th order mechanism. The mineral deposition mechanisms and ash slagging tendency were predicted. Abstract An unavoidable but reusable […]
International Aluminum Industry -
Removal of fluoride from water using aluminum hydroxide-loaded zeolite synthesized from coal fly ash
Highlights Aluminum hydroxide coated zeolite (AHZ) was synthesized from coal fly ash. The maximum adsorption capacity of fluoride by AHZ reached 18.12 mg/g. Optimal fluoride adsorption was within the pH range of 5.5?6.5. Defluoridation by AHZ was fast and did not affect substantially by common anions. The mechanism of fluoride adsorption was the exchange with […]
International Water Treatment -
Aluminium compound deconstructs sulfur hexafluoride in minutes
Researchers in the UK have developed a fast and mild method for deconstructing SF6. The method converts the potent greenhouse gas into stable aluminium(iii) fluoride and sulfide compounds, which can serve as nucleophilic sources of F? and S2- in further reactions to make valuable organic products. Source: © Shutterstock Sulfur hexafluoride circuit breakers protect electrical […]
International Aluminum Industry Greenhouse/Ozone Gases -
Fluoride Sources, Toxicity and Fluorosis Management Techniques – A Brief Review.
Highlights Overexposure to fluoride via drinking water causes several health effects including fluorosis Endemic fluorosis is still persisted in several countries even with advancement in research Most of fluorosis management techniques suggested in the past have come with their own drawbacks Defluoridation techniques based on aluminium materials pose serious health risks to the public A […]
International Water Treatment -
GO-CeO2 nanohybrid for ultra-rapid fluoride removal from drinking water
Highlights Graphene oxide-ceria (GO-CeO2) nanohybrid exhibited ultra-rapid kinetics (<1 min) for F– removal. Maximum F– adsorption capacity was 8.61 mg/g at pH 6.5 and 16.07 mg/g at pH 4.0. Both electrostatic interaction and surface complexation participated in the F? removal process. The nanohybrid has the potential for use in high throughput defluoridation systems. Abstract The […]
International Water Treatment -
Preparation of MgO porous nanoplates modified pumice and its adsorption performance on fluoride removal
Highlights MgO porous nanoplates modified pumice is developed through a facile method. The loading amount of the MgO porous nanoplates can be conveniently adjust. The adsorption capacity for fluoride is larger than 37.9 mg/g. The MgO@pumice can efficiently removal fluoride at a wide pH range of 2–10. The column test showed that 324 bed volumes […]
International Water Treatment -
A spore-based portable kit for on-site detection of fluoride ions
Highlights A spore-based portable kit was fabricated for visual and point-of-care testing of F–. The F– detection kit was successfully applied in surface waters and groundwater. The kit showed rapid, low-cost, eco-friendly, and ease of operation and storage. F– binding at near to the T2 Cu inhibited the reduction of O2 in CotA-laccase. Abstract The […]
International Water Treatment -
Evaluation of straw ash as a cost-effective adsorbent for the removal of phosphate and fluoride from aqueous solution
Abstract In the present study, the straw ash (SA) was proposed to remove phosphate and fluoride from aqueous solution. The effects of SA dosage, initial contaminants concentration and initial pH on removal efficiency, adsorption kinetics and isotherms were investigated in batch experiments. The removal mechanisms were also discussed. The results show that solution pH was […]
International Water Treatment -
The controversial contribution to dental research made by Albert Schatz-Co-discoverer of streptomycin
Abstract In addition to being co-discoverer of the antibiotic streptomycin the American microbiologist and soil scientist, Albert Schatz did ground breaking dental research. His major contribution is the Proteolysis–Chelation theory, but he also did research on fluoridation where he emphasised the overlooked involvement of so-called paradoxical effects. His research led him to become an active […]
International -
Adsorptive removal of fluoride using biochar – a potential application in drinking water treatment
Highlights Elevated fluoride levels in drinking water root cause of dental and skeletal fluorosis. The Defluoridation capacity using water melon rind biochar(WMRBC was 9.5 mg/g. Anions such as Cl–, NO3–, SO42, HCO3–and CO32-did not affect fluoride adsorption. Abstract Fluoride as a geogenic contaminant is commonly encountered in groundwater-based drinking water sources. In the present study […]
International Water Treatment
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