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61,005 resultsShowing papers similar to Enrichment of microplastic pollution by micro-nanobubbles
ClearEnhanced microplastic removal using a mini-hydrocyclone with microbubbles
Researchers improved microplastic separation from water by combining mini-hydrocyclones with microbubble injection, finding that the microbubbles reduced apparent microplastic density and substantially improved separation efficiency for particles with densities similar to water.
Emerging investigator series: suspended air nanobubbles in water can shuttle polystyrene nanoplastics to the air–water interface
Nanobubbles suspended in water can physically carry nanoplastic particles to the air-water interface and concentrate them there, but only when the repulsive electrical charge between the particles and bubbles is reduced by adjusting pH. This discovery points toward a potential low-energy method for removing nanoplastics from water, which is currently one of the hardest fractions of plastic pollution to filter out.
Utilization of Bubbles and Oil for Microplastic Capture from Water
Researchers demonstrated a simple method using vegetable oil and air bubbles to capture over 98% of microplastics from water, achieving complete removal of larger particles and high capture of microfibers — a potentially passive, low-cost cleanup approach that avoids releasing secondary contamination into treated water.
Advanced nanobubble flotation for enhanced removal of sub-10 µm microplastics from wastewater
Scientists developed a nanobubble-assisted flotation technique that improves removal of very small microplastics (under 10 micrometers) from wastewater by up to 17% compared to traditional methods. Removing these tiny particles is especially important because their small size makes them more likely to pass through water treatment and eventually be consumed by humans.
Marine microplastic separation device based on micro nano bubble flotation technology
Researchers designed a marine microplastic separation device using micro-nano bubble flotation technology to address limitations of existing methods, enabling continuous separation of microplastic particles from seawater with improved efficiency and reduced risk of secondary contamination.
Overlooked Role of Bulk Nanobubbles in the Alteration and Motion of Microplastics in the Ocean Environment
Researchers examined how bulk nanobubbles in ocean water alter the motion and behavior of microplastics at the shoreline, finding that nanobubbles interact with microplastic surfaces in ways influenced by salinity and external energy, affecting how microplastics move and accumulate in marine environments.
A Novel Application of Ultrasound for Removal of Aqueous Microplastics
Researchers investigated bath-type ultrasonication as a novel method for removing microplastics from aqueous environments, reporting this as the first application of this technique for microplastic remediation. The ultrasound-based approach showed promise as an effective treatment strategy for addressing microplastic pollution in water systems.
Assessment of sub-200-nm nanobubbles with ultra-high stability in water
Not relevant to microplastics — this study investigates the stability and physical properties of sub-200 nm nanobubbles in water for use in environmental remediation and industrial applications, with no microplastic content.
Nanoscale insight into the interaction mechanism underlying the transport of microplastics by bubbles in aqueous environment
Nanoscale experiments revealed that bubble capture of microplastics in water is governed by hydrophobic interactions and surface charge complementarity between bubbles and MP particles. Understanding these mechanisms is critical for modeling the role of bubbles in transporting MPs from water to air-water interfaces and across environmental compartments.
Removal of micron-scale microplastic particles from different waters with efficient tool of surface-functionalized microbubbles
Researchers used surface-functionalized microbubbles (colloidal gas aphrons) to simultaneously remove micron-scale microplastic particles and dissolved organic matter from water, achieving over 94% polystyrene removal and near-complete color elimination in river water and wastewater plant influent through electrostatic and complexation interactions.
Enhanced removal of microplastics using microflotation
Researchers demonstrated that microflotation, a process using optimized small bubble sizes, can remove 84-98% of microplastics from water without requiring chemical additives like flocculants or coagulants. Using a pilot-scale system, they tested removal of 30 and 100 micrometer polystyrene particles across environmentally relevant concentrations. The study suggests that microflotation offers an efficient and chemical-free alternative for microplastic removal in water treatment applications.
Environmental aspects of restoring the environment: nanotechnology for removing micro and nanoplastics from water
Researchers developed a plasma chemical water purification method that combines modified humic substances with high-voltage electrical discharge to aggregate and magnetically remove micro- and nanoplastics from contaminated water. Tested on wastewater from a printing facility, the method outperformed conventional sorption or plasma treatment alone and showed promise for simultaneously removing plastics, heavy metals, and organic pollutants. This offers a potentially scalable technology for treating industrial wastewater sources that are currently releasing nanoplastics to the environment.
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.
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.
Investigation of Microplastics Behavior and Properties in Public Sewage Treatment Plant and Pre-treatment with Microbubbles
Korean researchers tracked microplastics through different stages of a public sewage treatment plant and tested microbubble pre-treatment to improve removal. Microplastic concentrations dropped from 719 particles per liter in raw sewage to 16 per liter after tertiary treatment, and microbubble aeration further enhanced early-stage removal.
Integrated Chitosan-based coagulation and microbubble pre-treatment for improved microplastic fibre removal from water
Researchers developed a combined chitosan-based coagulation and microbubble pre-treatment system for removing microplastic fibres from water, finding that this approach overcame the limitations of conventional inorganic coagulants and improved removal efficiency for the morphologically challenging fibre fraction.
Jet Drop Enrichment: A Low-Cost Method for Simultaneous PFAS and Microplastics Removal from Drinking Water
Per- and polyfluoroalkyl substances (PFAS) and tiny microplastics are two of the hardest contaminants to remove from drinking water, and this study proposes a surprising solution: harnessing the micro-bubbles that naturally burst at a water surface, which fling surface-active pollutants into tiny airborne droplets that can be collected. The method achieved up to 99% removal of long-chain PFAS and fine microplastics simultaneously, and when combined with a resin pre-treatment step, also captured shorter-chain PFAS at over 90% efficiency. This bubble-based approach is low-energy, low-cost, and could complement existing water treatment infrastructure.
The rise and rupture of bubbles: applications to biofouling, microplastic pollution, and sea spray aerosols
Researchers studied how rising air bubbles in water collect microplastics and bacteria on their surfaces and transport them to the liquid surface, and how bubble bursting then launches these particles into the air as sea spray — with implications for both aquatic contamination and airborne microplastic exposure.
Nanomaterials for microplastics remediation in wastewater: A viable step towards cleaner water
This review examines how nanomaterials, tiny engineered particles with high surface area and reactivity, can be used to remove microplastics from water more effectively than traditional methods like filtration and sedimentation. While promising, these technologies face challenges including high production costs, potential toxicity of the nanomaterials themselves, and difficulty scaling up from lab to real-world applications. Improving these methods is important because current water treatment often fails to remove the smallest and most harmful microplastic particles.
Nanomaterials for microplastic remediation from aquatic environment: Why nano matters?
This review examines how nanomaterials such as photocatalysts, adsorbents, and membrane filters can be used to remove microplastics from aquatic environments, highlighting why nanoscale properties offer advantages over conventional remediation approaches.
Hydrophobicity–water/air–based enrichment cell for microplastics analysis within environmental samples: A proof of concept
Researchers developed a new microplastic separation device that uses the hydrophobic properties of plastic particles combined with fine air bubbles to quickly and effectively extract microplastics from sediment and soil samples. The new method avoids harsh solvents that can degrade microplastic particles and offers a faster alternative to existing separation techniques.
Ultrasensitive SERS detection and efficient flotation removal of nanoplastics from water using bubble-spouting micromotor swarms
Researchers developed magnetic Ag/Co micromotors that spout microbubbles and used them to simultaneously detect nanoplastics via surface-enhanced Raman spectroscopy and remove them from large water volumes through bubble-assisted flotation, demonstrating a new integrated approach for nanoplastic remediation.
Perspective Chapter: Role of Nanobubbles Technology in Wastewater Treatments
Not relevant to microplastics — this chapter reviews nanobubble technology for improving wastewater treatment processes such as flotation and biological reactors; microplastics are not addressed.
Nano-based remediation strategies for micro and nanoplastic pollution
This review covers how nanomaterial-based technologies can be used to remove microplastics from the environment, including methods using magnetic nanoparticles, photocatalysts, and membrane filters. While current physical, chemical, and biological removal methods each have limitations, nanomaterials can enhance their effectiveness by targeting smaller plastic particles that traditional methods miss. Better removal technologies could ultimately reduce human exposure to microplastics in drinking water and food.