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20 resultsShowing papers similar to Determinação de condições operacionais de um processo de flotação por ar dissolvido para tratamento de água
ClearCFD Simulation of DAF processing for removal microplastic in different flotation solution
Researchers used computational fluid dynamics to simulate dissolved air flotation (DAF) for removing microplastics from various wastewater types. The simulations showed that optimal bubble-to-particle ratios and flow conditions significantly improved removal efficiency, providing a design framework for scaling up DAF in water treatment systems.
Modelling and application of dissolved air flotation for efficient separation of microplastics from sludges and sediments
Researchers developed and tested predictive models for dissolved air flotation (DAF) — a process that uses tiny air bubbles to lift particles out of water — to more efficiently remove microplastics from industrial sludge and sediments. The models accurately predicted how different plastic types, sizes, and shapes attach to air bubbles, enabling better design of microplastic removal systems at industrial scale.
Simultaneous monitoring of flow patterns, and bubble, and plastics micro-particle characteristics in Dissolved Air Flotation (DAF)
Researchers used a lab-scale dissolved air flotation (DAF) tank to simultaneously track microbubbles and microplastic particles, finding that particle dynamics and flow regimes within the tank significantly influenced removal performance. The study offers insights for optimizing DAF water treatment systems to better capture microplastics during drinking water or wastewater processing.
Removal of Microplastic From Liquid Medium By Dissolved Air Flotation
Researchers tested dissolved air flotation (DAF) as a technique for removing PVC microplastics from water, conducting flotation tests with coagulant dosage optimization using a suspension of 400 mg/L PVC particles in water supply.
The removal efficiency and mechanism of microplastic enhancement by positive modification dissolved air flotation
Researchers enhanced dissolved air flotation by modifying the process with positively charged surfaces to improve microplastic removal from freshwater, finding that the modified approach significantly outperformed conventional dissolved air flotation across three common polymer types.
Numerical study on the mechanism of microplastic separation from water by cyclonic air flotation
This numerical study modeled the separation of microplastics from water using cyclone separators, optimizing design parameters and flow conditions to improve removal efficiency across different particle sizes and densities.
Model analysis of electroflotation water treatment of wastewater containing microplastics
This study developed a mathematical model describing how electroflotation can remove microplastics from wastewater, identifying key factors affecting efficiency. Better process models help optimize treatment systems for removing plastic particles before they enter waterways.
Performanceof Coagulation-Assisted Dissolved AirFlotation Process for Microplastics Removal from Synthetic WastewaterContaining Fat, Oil and Grease
Researchers optimized a coagulation-assisted dissolved air flotation (DAF) process for removing polyethylene and polystyrene microplastics from synthetic wastewater containing fat, oil, and grease, achieving removal efficiencies of 88-90% with added coagulants compared to only 27-28% for DAF alone. The presence of fat, oil, and grease further enhanced MP removal to 95%, suggesting that hydrophobic interactions facilitate aggregation between MPs and these substances.
Removal of Micro/Nano-Plastics from Water by Flotation Technology: A Review
This review covers flotation technology as a method for removing micro- and nanoplastics from water, explaining how dissolved air flotation, electroflotation, and froth flotation work to separate plastic particles. The authors assess performance data across particle sizes and polymer types and identify remaining challenges for scaling these approaches.
Is froth flotation a potential scheme for microplastics removal? Analysis on flotation kinetics and surface characteristics
This study evaluated froth flotation as a method for removing microplastics from water, finding that surface hydrophobicity governs flotation efficiency and that the technique shows promise as a scalable treatment option for certain polymer types.
Microplastic removal in coagulation-flocculation: Optimization through chemometric and morphological insights
Researchers optimized the coagulation-flocculation process — a standard water treatment step where chemicals cause particles to clump and settle — for removing three types of microplastics: polypropylene, polyethylene, and polystyrene. Polystyrene was removed most efficiently, and adjusting pH, coagulant type, and dosage significantly improved removal rates, providing practical guidance for upgrading existing water treatment plants to better capture microplastics.
Understanding and Improving Microplastic Removal during Water Treatment: Impact of Coagulation and Flocculation
Researchers systematically tested coagulation and flocculation for removing microplastics from drinking water, finding that removal efficiency depended strongly on plastic particle size and whether particles had been weathered, with smaller pristine particles being the hardest to remove.
Treatment technologies for the removal of micro plastics from aqueous medium
Researchers reviewed treatment technologies for removing microplastics from water, finding that while multiple methods including filtration, membrane processes, and coagulation show promise, their effectiveness depends on microplastic size, type, and concentration.
Removal of microplastics from wastewater through electrocoagulation-electroflotation and membrane filtration processes
Researchers investigated electrocoagulation-electroflotation and membrane filtration for removing microplastics from wastewater, finding that combining these processes effectively recovers microplastic particles from treatment plant effluent.
Effect of UV-degraded microplastics on Dissolved Air Flotation (DAF) removal
Polypropylene and polystyrene microplastics subjected to 30 days of UVC irradiation showed altered surface properties and reduced removal efficiency in dissolved air flotation (DAF) water treatment, with UV-degraded microplastics presenting greater challenges for conventional water treatment processes than pristine particles.
Selection of a sustainable treatment process for removal of microplastics from wastewater by axiomatic design and PROMETHEE
Researchers compared multiple water treatment processes for microplastic removal and identified selection criteria for sustainable treatment approaches, finding that coagulation-flocculation, membrane filtration, and biological treatment each offered different trade-offs in cost, efficiency, and byproduct generation.
The Use of Polymers in the Flotation Treatment of Wastewater
This review covers how polymers (polyelectrolytes) are used in flotation-based wastewater treatment to remove suspended solids and organic matter. The findings are relevant to how plastics interact with water treatment processes.
The influence of coagulation process conditions on theefficiency of microplastic removal in water treatment
Researchers investigated how coagulation process conditions — including coagulant type, pH, and microsand addition — affect the removal of polyethylene, PVC, and textile microfibers from river water, municipal wastewater, laundry effluent, and synthetic matrices. Ferric chloride and polyaluminum chloride both achieved substantial removal, with performance varying significantly by water matrix and microplastic type.
Estudo da degradação de microplásticos em água e efluente secundário de estação de tratamento de esgoto por processos baseados em ozônio
This Brazilian study tested ozone-based water treatment processes for degrading polyethylene microplastics in both clean water and secondary wastewater effluent. While ozonation could break down microplastics into smaller fragments and dissolved organic carbon, it did not fully eliminate them, suggesting the need for combined treatment approaches.
Feasibility evaluation of near dissolved organic matter microfiltration (NDOM MF) for the efficient removal of microplastics in the water treatment process
Researchers evaluated near-dissolved organic matter microfiltration as a water treatment method for removing natural organic matter precursors to disinfection by-products, testing membrane performance under varying operating conditions. Results showed that operating near the dissolved organic matter rejection threshold improved filtration efficiency while managing fouling, offering a refined approach to membrane-based water treatment.