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20 resultsShowing papers similar to The influence of coagulation process conditions on theefficiency of microplastic removal in water treatment
ClearInfluence 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.
Elimination of a Mixture of Microplastics Using Conventional and Detergent-Assisted Coagulation
Researchers tested coagulation as a method to remove microplastics from tap water, evaluating how microplastic type (PE and PVC), water pH, coagulant dose, and microplastic concentration affect removal efficiency, and finding that detergent-assisted coagulation improves performance.
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.
Investigating 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.
Effect of coagulation on microfibers in laundry wastewater
Researchers tested ferric chloride and polyaluminium chloride (PACl) as coagulants for removing synthetic microfibers from laundry wastewater, finding that surfactants in detergent reduced removal efficiency from up to 96% to 0-37%. Adding PACl restored removal to above 90%, with optimal PACl concentrations dependent on detergent concentration, suggesting coagulant addition is critical for effective microfiber removal from laundry effluent.
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.
Microplastics and nanoplastics in water: Improving removal in wastewater treatment plants with alternative coagulants
Conventional water treatment plants that use alum as a coagulant become significantly less effective at removing microplastics and nanoplastics as water pH rises above 7.8, which is common in municipal wastewater. Switching to alternative coagulants — particularly aluminum chlorohydrate and cationic polyamine blends — maintained high removal rates at elevated pH, with nanoplastic removal reaching 71% and microfiber removal staying above 95%. The findings offer practical guidance for upgrading treatment plants to better capture plastic particles before they are discharged into waterways.
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.
Enhancing microplastic removal from natural water using coagulant aids
Researchers tested different chemical treatments for removing microplastic beads from natural water and found that polyaluminium chloride combined with polyacrylamide achieved over 95% removal across six common plastic types. The treatment worked on particles ranging from 10 to 1,000 micrometers, and natural organic matter in the water actually improved performance. The findings suggest that optimizing standard water treatment processes could be a practical way to reduce microplastic contamination in drinking water sources.
Microplastics removal from natural surface water by coagulation process
Researchers compared the effectiveness of ferrous and aluminum sulfate coagulants for removing microplastics from natural surface water, finding that both successfully removed polystyrene and polyvinyl chloride particles. Ferrous sulfate showed slightly higher removal efficiency, and the addition of coagulant aids further improved results. The study demonstrates that conventional coagulation processes already used in drinking water treatment can meaningfully reduce microplastic contamination.
Microplastic removal by coagulation: a review of optimizing the reaction conditions and mechanisms
This review examines recent advances in using coagulation to remove microplastics from water and wastewater, analyzing how factors like coagulant type, dosage, pH, and particle shape affect removal efficiency. Researchers found that optimizing these reaction conditions is critical for maximizing microplastic removal while reducing energy costs. The study highlights significant knowledge gaps in understanding the mechanisms behind coagulation-based microplastic removal and calls for more extensive research.
Microplastics and nanoplastics in water: Improving removal in wastewater treatment plants with alternative coagulants
Laboratory tests showed that conventional aluminum sulfate (alum) coagulant becomes much less effective at removing micro- and nanoplastics from water at pH above 7.8—a common condition in municipal wastewater—but switching to aluminum chlorohydrate largely restores removal efficiency. This matters because wastewater treatment plants are a critical barrier preventing microplastics from entering rivers and oceans, and many currently use alum. The study gives water utilities a practical, drop-in solution to significantly improve microplastic capture under challenging water chemistry.
Removal of polystyrene and polyethylene microplastics using PAC and FeCl3 coagulation: Performance and mechanism
Researchers studied how two common water treatment coagulants, PAC and iron chloride, remove polystyrene and polyethylene microplastics from water. They found that PAC was more effective than iron chloride, and that alkaline conditions improved removal rates. The study provides practical insights for drinking water treatment plants looking to reduce microplastic contamination in their supply.
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.
Research on Effect of Microplastics Removal through Combination of Coagulation and Sand Filtration
Researchers tested three coagulants — ferric chloride (FeCl3), polyferric sulfate (PFS), and polyaluminum chloride (PAC) — for microplastic removal from secondary wastewater effluent, finding that 40 mg/L PFS achieved the highest coagulation removal rate of 61%. A combined PFS plus sand filtration process removed 91% of microplastics, 82% of suspended solids, and 85% of total phosphorus at a treatment cost of approximately 0.0594 Yuan per tonne of wastewater.
Impact of fiber-based super-bridging agents on contaminant removal via settling and screening: microplastics, textile fibers, and turbidity
Researchers added fiber-based super-bridging agents to standard water treatment coagulation and flocculation processes and found they created flocs 10 to 100 times larger than normal, dramatically improving settling. The agents also cut chemical demand by 50% and improved removal of microplastics, textile fibers, and turbidity from water. This approach could make water treatment more efficient and cost-effective while specifically targeting microplastic removal.
Microplastics removal from aquatic environment by coagulation: Selecting the best coagulant based on variables determined from a systematic review
This systematic review and experimental study identifies the most effective methods for removing microplastics from water using coagulation, a common water treatment technique. Researchers tested different coagulants on three types of microplastics and found that aluminum-based coagulants were most effective. These findings could help water treatment plants better remove microplastics from the water supply before it reaches our taps.
Coagulation technologies for separation of microplastics in water: current status
This review examines how coagulation water treatment technologies can remove microplastics from water. Conventional coagulation achieves 8-98% removal efficiency while electrocoagulation achieves 8-99%, depending on conditions, offering a potentially effective approach for reducing microplastics in drinking water and wastewater.
The removal of microplastics from water by coagulation: A comprehensive review
This review comprehensively examined coagulation as a technology for removing microplastics from drinking water and wastewater treatment plants, analyzing the mechanisms, influencing factors, and effectiveness of different coagulants for microplastic removal.
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.