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61,005 resultsShowing papers similar to Effect of Microplastics on the Coagulation Mechanism of Polyaluminum–Titanium Chloride Composite Coagulant for Organic Matter Removal Revealed by Optical Spectroscopy
ClearNew 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 suitability and mechanism of polyaluminum-titanium chloride composite coagulant (PATC) for polystyrene microplastic removal: Structural characterization and theoretical calculation
Researchers developed a new coagulant (a chemical that clumps particles together for removal) that effectively removes polystyrene microplastics from water. The composite coagulant worked better than standard water treatment chemicals across a wider range of water conditions, using hydrogen bonding to capture the plastic particles. This technology could improve drinking water treatment plants' ability to filter out microplastics before water reaches consumers.
Uncovering the performance and intrinsic mechanism of different hydrolyzed AlTi species in polystyrene nanoplastics coagulation
Researchers systematically compared how different aluminum-titanium coagulant species remove nanoplastics from water, finding that polymeric AlTi species outperform monomeric ones by achieving 95% turbidity removal at lower doses through a combination of charge neutralization and chemical complexation with the nanoplastic surface.
Coagulation of TiO2, CeO2 nanoparticles, and polystyrene nanoplastics in bottled mineral and surface waters. Effect of water properties, coagulant type, and dosage
Polyaluminum chloride was more effective than iron chloride at coagulating TiO2, CeO2 nanoparticles, and polystyrene nanoplastics in drinking water sources, requiring lower doses to achieve particle removal. Nanoplastics were harder to coagulate than metal oxide nanoparticles, indicating that current water treatment practices may inadequately remove plastic nanoparticles from drinking water.
Microcosmic mechanism analysis of the combined pollution of aged polystyrene with humic acid and its efficient removal by a composite coagulant
Researchers analyzed how aged polystyrene interacts with humic acid at the molecular level and developed a novel polyaluminum-titanium chloride composite coagulant that effectively removes these combined pollutants from water across different pH conditions.
Coagulation studies on photodegraded and photocatalytically degraded polystyrene microplastics using polyaluminium chloride
Researchers studied how UV light exposure and photocatalytic degradation change the properties of polystyrene microplastics and affect their removal by a common water treatment chemical. They found that UV-treated microplastics developed rougher surfaces and new chemical groups that made them easier to remove through coagulation. The study suggests that understanding how weathered microplastics behave differently from fresh ones is important for optimizing water treatment processes.
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.
Revealing the removal behavior of polystyrene nanoplastics and natural organic matter by AlTi-based coagulant from the perspective of functional groups
Researchers examined how the surface chemistry of polystyrene nanoplastics (carboxyl vs. amine groups) and co-occurring natural organic matter influence removal by a novel aluminum-titanium coagulant, finding that amine-functionalized particles are more easily removed across a wider pH range and that low-molecular-weight organic acids preferentially occupy coagulant binding sites, complicating nanoplastic removal in natural water matrices.
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.
Improving nanoplastic removal by coagulation: Impact mechanism of particle size and water chemical conditions
Researchers found that coagulation using aluminum chlorohydrate and polyacrylamide achieved up to 98.5% removal efficiency for polystyrene nanoplastics, with smaller particles being easier to remove, though humic acid in water competed for adsorption sites and reduced effectiveness.
Enhanced Removal of Polystyrene Microplastics from Water Through Coagulation Using Polyaluminum Ferric Chloride with Coagulant Aids
Researchers tested enhanced coagulation using modified coagulants to remove polystyrene microplastics from water, finding that surface-modified coagulants achieved significantly higher removal efficiencies than conventional alum. Removal reached over 90% under optimized conditions, demonstrating a practical upgrade pathway for conventional water treatment plants to reduce microplastic discharge.
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.
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.
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.
Surface characteristics of polystyrene microplastics mainly determine their coagulation performances
Researchers evaluated polyaluminum sulfate coagulant for removing polystyrene microplastics from water, achieving 90.4% removal at optimal dosage. Surface characteristics of microplastics including density, particle size, and adsorbed substances significantly influenced coagulation efficiency.
Effect of surface functional groups of polystyrene micro/nano plastics on the release of NOM from flocs during the aging process
Researchers studied how polystyrene micro- and nanoparticles with different surface functional groups affect the release of natural organic matter from coagulation flocs during aging. They found that smaller nanoparticles had a greater impact on natural organic matter release than larger microplastics. The study highlights a hidden risk in water treatment, where microplastics in the coagulation process could compromise the effectiveness of removing organic contaminants from drinking water.
Screening on the sorption of emerging contaminants to polystyrene and polyethylene and use of coagulation – flocculation process for microplastics’ removal
This study tested how well polystyrene and polyethylene microplastics absorb pharmaceutical compounds and personal care product chemicals, and whether coagulation-flocculation water treatment removes these plastic-pollutant combinations. The results support the use of coagulants to reduce microplastic contamination in drinking water.
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.
Removal behaviors and mechanism of polystyrene microplastics by coagulation/ultrafiltration process: Co-effects of humic acid
Researchers investigated coagulation-ultrafiltration for removing polystyrene microplastics from drinking water, finding that aluminum-based coagulants achieved over 92% removal efficiency and that humic acid co-presence affected the removal mechanism and membrane fouling.
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.
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.
Enhanced coagulation process for removing dissolved organic matter, microplastics, and silver nanoparticles
Poly aluminum chloride (PACl) coagulation was tested for simultaneous removal of dissolved organic carbon, microplastics, and silver nanoparticles from canal water in Thailand, finding that PACl effectively reduced all three contaminants in a single treatment step. The results demonstrate coagulation as a practical multi-pollutant treatment strategy for water sources co-contaminated with microplastics and engineered nanoparticles.
Optimization of polypropylene microplastics removal using conventional coagulants in drinking water treatment plants via response surface methodology
Researchers optimized coagulation of polypropylene microplastics from drinking water using polyaluminium chloride as coagulant and response surface methodology to identify optimal conditions. The maximum predicted removal rate under optimal conditions (pH 9, 200 ppm PACl, 21 ppm polyacrylamide) was approximately 19.7% for the smallest microplastic size tested, indicating that conventional coagulation alone has limited effectiveness for polypropylene 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.