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Papers
20 resultsShowing papers similar to Conversion of the styrofoam waste into a high-capacity and recoverable adsorbent in the removing the toxic Pb(II) from water media
ClearSynthesis of polyvinyl chloride modified magnetic hydrochar for effective removal of Pb(II) and bisphenol A from aqueous phase: performance and mechanism exploration
Scientists created a new material by combining PVC plastic waste with corn straw and iron oxide to make a magnetic filter that can remove lead and bisphenol A from water. The material worked well across a wide range of water conditions and could be reused multiple times. While focused on water cleanup technology, this research shows how recycled plastic waste can be repurposed to help address water contamination, including pollutants often associated with microplastics.
Hypercrosslinked waste polycarbonate to remove heavy metal contaminants from wastewater
Researchers chemically modified waste polycarbonate plastic using a process called hypercrosslinking, turning it into a resin capable of efficiently removing lead and cadmium ions from contaminated water. The material achieved removal capacities around 160 mg per gram for both toxic metals, demonstrating that plastic waste can be repurposed as a tool for cleaning up heavy metal pollution.
Magnetically Separable Humic Acid-Chitin Based Adsorbent as Pb(II) Uptake in Synthetic Wastewater
Researchers synthesized a magnetic humic acid-chitin composite material to adsorb lead (Pb) from synthetic wastewater, achieving high removal efficiency. Magnetically separable adsorbents are being developed for removing microplastics and associated heavy metals from contaminated water.
Functionalization of Strontium Ferrite Nanoparticles with Novel Chitosan–Schiff Base Ligand for Efficient Removal of Pb(II) Ions from Aqueous Media
Researchers developed a new magnetic nanocomposite made from strontium ferrite and a chitosan-based compound to remove lead from contaminated water. The material achieved over 98% lead removal efficiency under optimized conditions and could be easily recovered using a magnet for reuse. This approach offers a promising, recyclable tool for cleaning up heavy metal pollution in water sources.
Valorization of Plastic Wastes for the Development of Adsorbent Designed for the Removal of Emerging Contaminants in Wastewater
This review examines how plastic waste can be converted into adsorbent materials for removing emerging contaminants from wastewater — turning a pollution problem into a remediation solution. The approach could simultaneously reduce plastic waste and improve wastewater quality, reducing the amount of pollutants reaching drinking water sources.
Adsorption and thermal degradation of microplastics from aqueous solutions by Mg/Zn modified magnetic biochars
Researchers developed magnesium- and zinc-modified magnetic biochars that achieved over 94% removal efficiency for polystyrene microplastics from water, with performance enhanced by the metal modifications. The modified biochars also showed effectiveness in thermally degrading the captured microplastics, offering a potential two-step approach for microplastic removal and destruction in water treatment.
Synthesis of Amorphous MnFe@SBA Composites for Efficient Adsorptive Removal of Pb(Ⅱ) and Sb(V) from Aqueous Solution
Researchers synthesized a new composite material by growing manganese-iron oxide on a porous silica support for removing lead and antimony from contaminated water. The material removed over 99 percent of lead and 80 percent of antimony within two hours and performed well even in the presence of other dissolved ions. While not directly related to microplastics, the study contributes to water purification technology that could complement plastic pollution cleanup efforts.
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.
Evaluation of Efficient Pb Removal from Aqueous Solutions using Biochar Beads
Researchers developed alginate-biochar bead composites to improve the removal of lead from water compared to powdered biochar alone. The beads were easier to separate from solution and maintained high removal efficiency. This approach could make biochar-based heavy metal remediation more practical for real-world water treatment applications.
Insights into catalytic removal and separation of attached metals from natural-aged microplastics by magnetic biochar activating oxidation process
A magnetic biochar material activated persulfate to degrade the organic layer on aged microplastics, releasing bound metals like lead and then re-adsorbing them from solution for magnetic separation. The approach demonstrates a combined oxidation and adsorption strategy for removing hazardous metals associated with microplastics in contaminated water.
Enhancing Pb Adsorption on Crushed Microplastics: Insights into the Environmental Remediation
Researchers found that crushed microplastics generated during plastic recycling have significantly higher capacity to absorb lead than primary microplastics, due to their greater surface area and more reactive surfaces. Factors like particle size, water pH, salinity, and biofilm formation all influenced how much lead the particles could adsorb. The study raises concerns that the recycling process itself may create a secondary environmental hazard by producing microplastics that more efficiently concentrate toxic heavy metals.
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.
Comparative analysis of kinetics and mechanisms for Pb(II) sorption onto three kinds of microplastics
The sorption kinetics and mechanisms of lead (Pb(II)) onto three types of microplastics were compared to understand how plastic debris concentrates heavy metals in aquatic environments. The study found polymer-specific differences in sorption capacity and mechanism, with implications for how microplastics alter the distribution and bioavailability of lead in contaminated water.
Polystyrene 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.
Insights Into the Adsorption Behavior of Polyethylene Microplastics Towards Lead(II) Ions
Researchers investigated the adsorption behavior of lead(II) ions onto polyethylene microplastics in freshwater environments by systematically varying initial Pb(II) concentration, pH, and residence time, using scanning electron microscopy and other characterization methods to elucidate the interaction dynamics and sorption mechanisms between this common metal contaminant and microplastic surfaces.
Microplastics inhibit lead binding to sediment components: Influence of surface functional groups and charge environment
Researchers systematically investigated interactions among lead, polystyrene microplastics, and sediment components to understand how microplastics affect heavy metal behavior in aquatic environments. The study found that polystyrene significantly inhibited lead adsorption to sediment by competing for binding sites, reducing lead uptake by up to 28%, which suggests that microplastics could increase the mobility of toxic metals in contaminated waterways.
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.
Investigation of the adsorption behavior of Pb(II) onto natural-aged microplastics as affected by salt ions
Researchers found that naturally aged microplastics adsorb significantly more lead than virgin microplastics, and that calcium chloride in solution strongly inhibits lead adsorption, indicating that environmental weathering and water chemistry alter contaminant transport.
Removal of polystyrene nanoplastics from water by Cu Ni carbon material: The role of adsorption
Researchers developed a copper-nickel carbon material that removed up to 99.18% of polystyrene nanoplastics from water through physical adsorption, with the recyclable material maintaining approximately 75% removal efficiency after four reuse cycles.
Removal of polystyrene nanoplastics from aqueous solutions by a novel magnetic zeolite adsorbent
Researchers synthesized a magnetic zeolite adsorbent using co-precipitation and tested it for removal of polystyrene nanoplastics from water, achieving a maximum adsorption capacity of 34.2 milligrams per gram. Iron oxide functional groups on the zeolite surface drove nanoplastic capture via electrostatic attraction, complexation, and pi-pi conjugation, and the material could be magnetically separated for reuse.