We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
CFD Simulation of DAF processing for removal microplastic in different flotation solution
AI summary Read the abstract
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.
Microplastic particles floating in rivers, lakes and seawater are one of the factors that threaten human health and the environment. In this study, the process of dissolved air flotation (DAF) to remove microplastics from various wastewaters was simulated by the computational fluid dynamics (CFD) method. First, a solution with a plastic particle concentration of 0.2 g/L was injected at a flow rate of 200 mL/min. Then, a microbubble water with a water-to-microbubble volume ratio of 4:1 was injected at a flow rate of 300 mL/min and the simulated results showed that the kinematic and distribution characteristics of the plastic particles and microbubbles were in good agreement with the experimental results. Based on the simulation system to analyze the behavior of particles in flotation solutions, the flotation performance was evaluated by varying the concentration of NaCl solution from 0 to 12 g/L and the pH value of 10-2 M salt solution from 4 to 9. The calculation results showed that the flotation performance improved with increasing NaCl concentration and pH, and the concentration of NaCl had a greater effect. These results provide some basic information for designing industrial wastewater treatment processes for the removal of microplastics in wastewater.
More Papers Like This
Modelling and application of dissolved air flotation for efficient separation of microplastics from sludges and sediments
AI summary Read the abstract
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)
AI summary Read the abstract
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
AI summary Read the abstract
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.
Numerical study on the mechanism of microplastic separation from water by cyclonic air flotation
AI summary Read the abstract
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.
Micro-Nanobubble Integrated Dissolved Air Flotation: A High-Efficiency Strategy for Microplastic Mitigation in Wastewater
AI summary Read the abstract
Researchers optimized a dissolved air flotation system using combined micro- and nanobubbles and achieved up to 97% removal of polyethylene and polystyrene microplastics from synthetic wastewater, outperforming either bubble size alone by enhancing bubble-particle interactions and promoting hydrophobic floc formation.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.