latest news: Water Treatment
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Interaction-based ion selectivity exhibited by self-assembled, cross-linked zwitterionic copolymer membranes
Significance The separation of ions is challenging yet crucial for providing access to safe water resources as well as recovering valuable ions from water and wastewater. Yet, membranes rarely exhibit selectivity between ions of similar charge and size. We demonstrate that membranes, prepared by a fully scalable method that uses self-assembling zwitterionic copolymers, exhibit exceptional […]
International Water Treatment -
Effective fluoride removal from brackish groundwaters by flow-electrode capacitive deionization (FCDI) under a continuous-flow mode
Highlights Utilizing FCDI to treat fluoride-contaminated brackish groundwater is quite effective. SCC was the most advantageous among the three operational modes of SCC, SC and ICC. F– was preferentially removed compared to Cl– with a high ion selectivity achievable. Steady-state effluent F– and Cl– concentrations versus current are greatly different. Abstract Herein, we demonstrated the […]
International Water Treatment -
New Filtering Method Promises Safer Drinking Water, Improved Industrial Production
Synthetic polymer membranes mimic the highly selective properties of biological cell membranes A team of scientists at the Tufts University School of Engineering has developed a new filtering technology inspired by biology that could help curb a drinking water-related disease that affects tens of millions of people worldwide and potentially improve environmental remediation, industrial and […]
United States, National USA Water Treatment -
Insights into the mechanism of fluoride adsorption over different crystal phase alumina surfaces
Abstract Activated alumina is the most common adsorbent for purifying fluoride in water, however, little is known so far about the adsorption mechanisms and comparison of adsorption behaviors for F on different crystal phase alumina surfaces, which seriously obstacles the development of high-performance sorbents. Herein, employing the density functional theory approach, we have studied F […]
International Water Treatment -
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 -
Variability of naturally occurring fluoride in diverse community drinking-water sources, Tanna Island, Vanuatu.
Abstract ListenReadSpeaker webReader: Listen (Study online here) Large variations in fluoride concentrations exist in natural waters, many of which are the source of community drinking-water supplies. Determining fluoride concentrations in community drinking waters can be challenging in developing Pacific countries such as Vanuatu that have limited laboratory capacity. Knowledge of naturally elevated fluoride concentrations that […]
Vanuatu Volcanoes Water Treatment -
A naturally inspired, reusable system that purifies water and builds itself
UNIVERSITY PARK, Pa. — In nature, the interaction of molecules at the boundary of different liquids can give rise to new structures. These self-assembling molecules make cell formation possible and are instrumental to the development of all life on Earth. They can also be engineered to perform specific functions — and now, a team of […]
United States, Pennsylvania Water Treatment -
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
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