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Papers
20 resultsShowing papers similar to Behaviour of M. aeruginosa–Microplastic composite pollutants in coagulation and sludge storage
ClearInvestigating the Potential of Coagulants to Improve Microplastics Removal in Wastewater and Tap Water
Researchers found that adding coagulants (FeCl3 or Al2(SO4)3) to wastewater and tap water improved microplastic removal, with aluminum sulfate achieving 43% and 62% removal efficiencies respectively, though the high concentrations required suggest that combining coagulants with organic polyelectrolytes could improve practicality.
Simultaneous removal of Microcystis aeruginosa and microplastics by oxidation enhanced coagulation
A water treatment study found that combining hydrogen peroxide-enhanced iron coagulation simultaneously removed over 90% of both the harmful cyanobacterium Microcystis aeruginosa and polystyrene microplastics from water, with algae biomass actually improving microplastic removal efficiency. This dual-contaminant treatment approach is promising for drinking water utilities that face both algal blooms and microplastic contamination.
Coagulation performance and mechanism of different hydrolyzed aluminum species for the removal of composite pollutants of polyethylene and humic acid
Researchers examined how different forms of hydrolyzed aluminum coagulants remove polyethylene microplastics and humic acid from water. The study found that when humic acid adsorbs onto microplastic surfaces, it changes the removal dynamics, and polyaluminum chloride with hexagonal clusters achieved the best microplastic removal through adsorption bridging and sweeping mechanisms.
Influence of Different Coagulants on Microplastics Removal
Researchers compared the effectiveness of different coagulants—including aluminum sulfate, ferric chloride, and polyaluminum chloride—for removing microplastics from water, finding significant performance differences dependent on plastic particle size, charge, and coagulant dose.
Understanding and characteristics of coagulation removal of composite pollution of microplastic and norfloxacin during water treatment
The coagulation removal of microplastics and the antibiotic norfloxacin together was studied in a water treatment context, finding that the presence of microplastics altered the coagulation behavior of norfloxacin and that their combined removal was less effective than treating either pollutant alone. The results highlight composite pollution as a challenge for conventional water treatment processes.
Heterogeneous aggregation between microplastics and microalgae: May provide new insights for microplastics removal
Researchers investigated heterogeneous aggregation between microplastics and various microalgal species, elucidating the formation process and influencing factors, which may provide new insights for developing microplastic removal strategies from aquatic environments.
Removal of microplastics from secondary wastewater treatment plant effluent by coagulation/flocculation with iron, aluminum and polyamine-based chemicals
Researchers tested iron, aluminum, and polyamine-based coagulants for removing small microplastics (<10 µm) from secondary wastewater treatment plant effluent, finding that coagulation-flocculation can remove a substantial fraction but that efficiency varies by chemical and particle size.
Impact of dissolved organic matter characteristics and inorganic species on the stability and removal by coagulation of nanoplastics in aqueous media
Researchers investigated how dissolved organic matter type and ionic composition affect the stability and coagulation removal of nanoplastics, finding that biopolymers rich in proteins and carbohydrates most effectively stabilize particles through steric repulsion, while polymer aluminum chloride (PACl) outperforms alum as a coagulant in the presence of organic matter.
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.
Revealing the influencing mechanisms of polystyrene microplastics (MPs) on the performance and stability of the algal-bacterial granular sludge
Researchers investigated how polystyrene microplastics affect algal-bacterial granular sludge used in wastewater treatment, finding that the sludge removed over 96% of incoming microplastics but that microplastics inhibited COD removal by 2.6 to 4.1% and total phosphorus removal by 2.9 to 5.8%. Structural stability was compromised through oxidative stress, altered protein composition, and reduced abundance of key functional bacteria.
Comprehensive effects of microplastics on algae-laden surface water treatment by coagulation-ultrafiltration combined process: Algae cultivation, coagulation performance and membrane fouling development
Researchers studied how microplastics affect the treatment of algae-contaminated drinking water using a combined filtration process. They found that microplastics initially stimulated algae growth by 58% but then suppressed the algae's release of organic compounds, and the plastics actually helped form larger clumps during water treatment. While microplastics complicated the treatment process in some ways, understanding these interactions is important for ensuring drinking water plants can effectively remove both algae and microplastics.
Efficiency and mechanism of micro- and nano-plastic removal with polymeric Al-Fe bimetallic coagulants: Role of Fe addition
Researchers investigated polymeric Al-Fe bimetallic coagulants for removing micro- and nanoplastics from drinking water, finding that iron addition enhanced nanoplastic removal efficiency through improved charge neutralization and floc formation mechanisms.
The interaction mechanisms of algal organic matter (AOM) and various types and aging degrees of microplastics
This study examined the interaction mechanisms between algal organic matter and microplastics of varying types and ages, finding that organic matter composition and plastic surface properties jointly determine adsorption affinity and the nature of plastic-AOM complexes.
Impact of coagulation characteristics on the aggregation of microplastics in upper-ocean turbulence
This study investigated how coagulation conditions affect microplastic aggregation in water treatment, finding that coagulant type and dose significantly influence floc formation with plastic particles and ultimately removal efficiency.
New insights into the fate and interaction mechanisms of hydrolyzed aluminum-titanium species in the removal of aged polystyrene
Researchers investigated the interaction between polyaluminum-titanium chloride composite coagulant species and aged polystyrene microplastics, revealing how species transformation during coagulation affects the removal efficiency of microplastics from water.
The Inhibition of Microcystin Adsorption by Microplastics in the Presence of Algal Organic Matters
Researchers found that polyethylene, polystyrene, and polymethyl methacrylate microplastics can adsorb microcystin MC-LR from water, but the presence of algal intracellular organic matter (IOM) reduced this adsorption by up to 22.7% due to competitive binding, suggesting that microplastic uptake of harmful natural toxins is likely overestimated in realistic aquatic conditions.
Efficient removal of microplastic particles from wastewater through formation of heteroagglomerates during the activated sludge process
Researchers found that across diverse microplastic polymer types, shapes, and sizes, more than 90% of spiked microplastic particles were incorporated into activated sludge flocs within 15 minutes of aeration and mixing during the wastewater treatment process. The similar removal behavior across all MP variants was attributed to near-neutral zeta potentials in filtered wastewater, suggesting van der Waals forces drive heteroagglomerate formation regardless of microplastic properties.
Interplay of plastic pollution with algae and plants: hidden danger or a blessing?
Researchers tested the ability of three microalgae species to remove microplastics from water through bioadhesion, finding that all three species could adsorb particles onto their surfaces. Removal efficiency depended on particle size, surface charge, and algae cell morphology.
Removal and toxic forecast of microplastics treated by electrocoagulation: Influence of dissolved organic matter
Electrocoagulation was evaluated for removing microplastics from water, with researchers investigating how co-pollutants and water chemistry affect removal efficiency and identifying the degradation products and toxicity of residual MPs post-treatment. The method showed high removal rates under optimized conditions but generated some toxic byproducts that require further management.
Enhancing nano and microplastics destabilization: Synergistic effects of natural mucin and conventional coagulants in water and wastewater treatment
Researchers investigated whether combining jellyfish mucus with conventional water treatment coagulants could improve removal of micro- and nanoplastics from water. The synergistic combination achieved over 90% removal efficiency with settling times under 5 minutes, outperforming either agent alone by leveraging bridging and entrapment mechanisms.