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Papers
20 resultsShowing papers similar to The suitability and mechanism of polyaluminum-titanium chloride composite coagulant (PATC) for polystyrene microplastic removal: Structural characterization and theoretical calculation
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.
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.
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.
Effect of Microplastics on the Coagulation Mechanism of Polyaluminum–Titanium Chloride Composite Coagulant for Organic Matter Removal Revealed by Optical Spectroscopy
This study investigated how microplastics interfere with a water treatment coagulant (PATC) designed to remove dissolved organic matter from drinking water. High concentrations of aged polystyrene microplastics competed with organic matter for active binding sites on the coagulant, reducing its effectiveness at removing certain compounds while also slowing the breakdown of its most reactive component. The results show microplastics in source water can compromise the efficiency of conventional water purification processes.
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.
Evaluating the performance of electrocoagulation system in the removal of polystyrene microplastics from water
Researchers tested electrocoagulation, a water treatment method that uses electric current to clump particles together, for removing polystyrene microplastics from water. Using aluminum electrodes at neutral pH, they achieved over 90% removal efficiency. This technology could provide a practical and effective way to remove microplastics from drinking water and wastewater, reducing human exposure to these contaminants.
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.
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.
Chemical Coagulation Applied for the Removal of Polyethylene and Expanded Polystyrene Microplastics
Researchers evaluated the use of aluminum sulfate-based coagulation and flocculation processes for removing polyethylene and expanded polystyrene microplastics from water. The study used factorial experimental designs to optimize treatment conditions including coagulant dosage and pH, demonstrating the potential of chemical coagulation as a microplastic removal strategy.
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.
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.
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.
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.
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 of Microplastics from Wastewater Treatment Plants by Coagulation
Researchers tested coagulation-based methods for removing microplastics from wastewater using polyaluminum chloride and polyferric sulfate, with and without polyacrylamide additives. The best results came from combining polyaluminum chloride with cationic polyacrylamide, which achieved 87.5% removal of polystyrene microplastics. The study suggests that cationic polyacrylamide works especially well because of electrostatic interactions with negatively charged microplastic particles.
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.
Recent innovations in microplastics and nanoplastics removal by coagulation technique: Implementations, knowledge gaps and prospects
This review evaluates coagulation, a water treatment technique that uses chemicals to clump particles together for easier removal, as a method for eliminating microplastics and nanoplastics from water. Researchers found that coagulation can effectively remove these plastic particles, especially when combined with other treatment steps, but performance varies based on plastic size, shape, and water chemistry. The study identifies key knowledge gaps and recommends further research to optimize coagulation for real-world microplastic removal.
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.
Preparation of composite coagulant for the removal of microplastics in water
Researchers prepared a composite coagulant (polyferric titanium sulfate combined with polydimethyldiallylammonium chloride, PFTS-PDMDAAC) featuring a three-dimensional network polymer structure for removing polystyrene micro-nanoparticles from simulated wastewater. The composite flocculant demonstrated good thermal stability and effective removal of microplastics through combined charge neutralization and bridging mechanisms.