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20 resultsShowing papers similar to Removal of polystyrene nanoplastics from aqueous solutions by a novel magnetic zeolite adsorbent
ClearPolystyrene microplastics removal from aqueous solutions by magnetic iron nanoparticles
Researchers tested magnetic iron oxide (Fe₃O₄) nanoparticles for removing polystyrene microplastics from water, systematically optimizing concentration, dosage, contact time, and pH, and found effective microplastic removal through adsorption interactions that could be leveraged for environmental remediation.
Efficient magnetic adsorption of polystyrene nanoplastic from aqueous solutions by eco-friendly Fe3O4 nanoparticles: Removal, kinetic and isotherm modeling studies
Researchers synthesized iron oxide magnetic nanoparticles using pine resin extract (a green chemistry approach) and demonstrated they remove polystyrene nanoplastics from water with 95–99% efficiency via magnetic separation, achieving an adsorption capacity of 454 mg/g through a monolayer chemisorption process.
Adsorptive removal of micron-sized polystyrene particles using magnetic iron oxide nanoparticles
Researchers demonstrated that magnetic iron oxide nanoparticles can effectively adsorb and remove micron-sized polystyrene microplastics from water, offering a magnetically recoverable approach to microplastic remediation.
A novel polymer coated magnetic activated biochar-zeolite composite for adsorption of polystyrene microplastics: Synthesis, characterization, adsorption and regeneration performance
Researchers developed a new magnetic composite material made from biochar, zeolite, and polymer coatings that can effectively capture microplastics from water. The material removed over 90 percent of test microplastics and could be regenerated and reused multiple times. The study presents a promising, practical approach for filtering microplastics out of contaminated water using materials that can be magnetically recovered.
Enhanced polystyrene nanoplastic removal by CTAB-modified magnetic biochar: Adsorption performance and mechanisms
Researchers engineered a CTAB-modified magnetic biochar adsorbent that removes polystyrene nanoplastics with a maximum capacity of 234 mg/g — more than double unmodified biochar — through electrostatic attraction, hydrophobic interactions, and iron oxide surface complexation, while also being easily retrievable with a magnet.
Exploration of interaction mechanism and removal performance of polystyrene nanoplastics with covalent organic framework: Experimental and theoretical study
Researchers synthesized a covalent organic framework (COF) material and demonstrated it can remove polystyrene nanoplastics from water with 99% efficiency within two hours, driven primarily by electrostatic attraction, and retains strong performance across multiple regeneration cycles.
Efficiency of adsorption of PSNPs using spontaneous magnetic biochar prepared from pyrolysis of municipal sludge and industrial red mud solid waste
Researchers prepared a spontaneous magnetic biochar from municipal sludge and industrial red mud waste to remove polystyrene nanoplastics from water. The material achieved a 97.87% removal rate within 30 minutes, with electrostatic interactions identified as the primary adsorption mechanism. The magnetic properties of the biochar enabled easy solid-liquid separation without filtration, offering a practical approach for nanoplastic remediation using waste-derived materials.
Exploring the effective adsorption of polystyrene microplastics from aqueous solution with magnetically separable nickel/reduced graphene oxide (Ni/rGO) nanocomposite
Researchers developed a magnetic nanocomposite material that can effectively remove polystyrene microplastics from water and be easily separated using a magnet for reuse. This technology could help reduce microplastic contamination in water supplies, potentially lowering human exposure to these tiny plastic particles through drinking water.
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.
Filtration of polystyrene nanoplastics with different functional groups by natural mineral materials: Performance and mechanisms
Researchers tested natural granular mineral materials including manganese sand, zeolite, and limestone as filter media for removing polystyrene nanoplastics with different surface functional groups from water. The study assessed which minerals perform best in rapid sand filters for nanoplastic removal under varying water chemistry conditions.
Removal of nanoplastics from aqueous solution by aggregation using reusable magnetic biochar modified with cetyltrimethylammonium bromide
CTAB-modified magnetic biochar was synthesized and found to efficiently remove polystyrene nanoplastics from water through electrostatic attraction, with the magnetic component enabling easy separation and reuse across multiple cycles. The composite offers a practical and low-cost approach for nanoplastic remediation from contaminated water.
Charge mediated interaction of polystyrene nanoplastic (PSNP) with minerals in aqueous phase
Researchers investigated how polystyrene nanoplastics interact with common soil and sediment minerals, finding that positively charged iron oxide minerals (goethite and magnetite) strongly adsorb nanoplastics via electrostatic attraction and hydrogen bonding, while negatively charged clay minerals do not — providing mechanistic insight into how nanoplastics may accumulate in iron-rich soils and sediments.
Destabilization of polystyrene nanoplastics with different surface charge and particle size by Fe electrocoagulation
Researchers tested iron electrocoagulation for removing nanoplastics from water and found it removed up to 85% of negatively charged polystyrene nanoparticles at neutral pH, with removal efficiency declining for larger particles and dropping sharply for positively charged nanoplastics due to insufficient iron floc formation.
Removal of polystyrene nanosphere and fragment from aqueous solutions by magnetic biochar derived from crab shell
Researchers developed a magnetic biochar derived from crab shells (M-CSBC) and demonstrated its effectiveness for removing both spherical polystyrene nanoplastics and fragmental polystyrene microplastics from water. The material achieved maximum removal capacities of 90.09 mg/g for nanoplastics and 14.47 g/g for microplastics, following a Langmuir adsorption model, with performance influenced by pH and salinity.
Enhanced flotation removal of polystyrene nanoplastics by chitosan modification: Performance and mechanism
Researchers improved removal of polystyrene nanoplastics from water using chitosan-modified air flotation, boosting removal efficiency from 3.1% to 96.7% by exploiting electrostatic attraction, enhanced hydrophobicity, and bridging adsorption to cause nanoplastics to aggregate into large, buoyant flocs.
Efficient removal of polystyrene nanoplastics from complex water system through multiple driving forces with MOF-based composite
Researchers integrated the metal-organic framework UIO-66 into melamine foam to create a composite adsorbent (UMF) that removes polystyrene nanoplastics from water with 65.5 mg/g capacity, maintaining over 81% efficiency after 25 reuse cycles and across a broad pH range, through multiple simultaneous binding mechanisms.
Phase transition of Mg/Al-flocs to Mg/Al-layered double hydroxides during flocculation and polystyrene nanoplastics removal
Researchers investigated how magnesium-aluminum layered double hydroxide flocs remove polystyrene nanoplastics from water, finding that electrostatic adsorption and intermolecular forces drive capture efficiency above 90%, with pH-dependent crystal formation playing a key role in the removal mechanism.
Efficient magnetic capture of PE microplastic from water by PEG modified Fe3O4 nanoparticles: Performance, kinetics, isotherms and influence factors
Researchers developed PEG-modified Fe3O4 magnetic nanoparticles that efficiently capture polyethylene microplastics from water with a maximum adsorption capacity of 2,203 mg/g, maintaining high removal efficiency across varying environmental conditions.
Development of a Fast and Efficient Strategy Based on Nanomagnetic Materials to Remove Polystyrene Spheres from the Aquatic Environment
Researchers developed magnetic nanoparticles coated with silver and an amino acid that can remove polystyrene microplastics from water with 100% efficiency in just 15 minutes. The approach works at room temperature and neutral pH, offering a fast and practical strategy for cleaning microplastic-contaminated water using simple magnetic separation.
Enhanced removal of aged and differently functionalized polystyrene nanoplastics using ball-milled magnetic pinewood biochars
Researchers developed magnetic biochars from pinewood using ball-milling with iron oxide nanoparticles, achieving highly effective removal of various functionalized and aged polystyrene nanoplastics from water with easy magnetic separation and reusability.