We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
61,005 resultsShowing papers similar to Optimization of methylene blue dye degradation using heterogeneous Fenton-like reaction with Fe3O4 nanoparticles/PVDF macrospheres: A response surface methodology approach
ClearInsight into the physical and chemical attributes of polypropylene microplastics
Researchers characterized the physical and chemical properties of polypropylene microplastics using electron microscopy and infrared spectroscopy. They found that the particles had irregular shapes with rough, cracked surfaces and sizes ranging from 14 to 96 micrometers, with spectral signatures confirming degradation. The study also identified that a 5% concentration of sodium lauryl sulfate provided optimal dispersion of these microplastics, addressing stability issues for laboratory research.
Adsorption of acid and basic dye from the simulated wastewater using carbonized microplastic particles synthesized from recycled polyethylene terephthalate plastic waste bottles: an integrated approach for experimental and practical applications
Researchers carbonized waste PET plastic bottles to create microplastic-like adsorbent particles and demonstrated their effectiveness in removing over 99% of methylene blue and methyl orange dyes from simulated wastewater, with adsorption optimized by response surface methodology and confirmed as exothermic, spontaneous, and applicable to real wastewater.
Insights into the degradation of microplastics by Fenton oxidation: From surface modification to mineralization
Researchers investigated Fenton oxidation of five common microplastic types, finding that while bulk particles showed modest weight losses of around 10%, polystyrene nanoplastics achieved 70% mineralization, with aromatic polymers being more susceptible to degradation.
Adsorption–desorption behavior of methylene blue onto aged polyethylene microplastics in aqueous environments
Researchers photoaged polyethylene microplastics under xenon light and measured changes in surface properties and adsorption-desorption behavior for methylene blue dye, finding that aging increased surface oxidation, enhanced dye adsorption capacity, and altered desorption kinetics compared to virgin particles.
MO dye adsorption and desorption on MPs.
Researchers investigated the adsorption and desorption of methyl orange, an anionic dye, on environmentally aged polyethylene, polyethylene terephthalate, and polystyrene microplastics, characterizing their interactions in aquatic environments using FTIR and other analytical methods to understand contaminant co-transport risks.
Towards more realistic reference microplastics and nanoplastics: preparation of polyethylene micro/nanoparticles with a biosurfactant
Polyethylene micro/nanoparticles stabilized with a biosurfactant were prepared as more realistic reference materials for ecotoxicity testing, better representing the surface properties and behavior of environmental microplastics compared to commercial standard materials. The study addresses a key methodological limitation in nanoplastic research by providing particles with environmentally relevant surface chemistry.
Effects of advanced oxidation processes on leachates and properties of microplastics
Ozonation, Fenton, and heat-activated persulfate treatments were applied to microplastics containing pigment red, finding that all three advanced oxidation processes effectively degraded the released pigment and altered nanoscale surface properties of the treated MPs.
Adsorption properties of polyethylene microplastics as a function of their shape
Researchers investigated how the shape of polyethylene microplastics — comparing spheres, fragments, and films of comparable size (~100 µm) and surface area — affects their adsorption rate and capacity using methylene blue dye as a model sorbate. The study found that particle shape significantly influenced adsorption behaviour, highlighting an often-overlooked variable in assessments of microplastic interactions with environmental pollutants.
Stability and dispersibility of microplastics in experimental exposure medium and detection of nanoplastic fractions by SMLS, SAXS, Raman microscopy, and SEM
Researchers investigated the stability and dispersibility of microplastics in laboratory exposure media, assessing how particle aggregation affects experimental dosing and relevance to ecological risk assessment. Microplastic behavior in test media differed substantially from predicted behavior based on particle properties alone, with implications for toxicity test design.
Aging and characterization of disposable polypropylene plastic cups based microplastics and its adsorption for methylene blue
This study characterized the aging of polypropylene microplastics derived from disposable cups and assessed their adsorption capacity for the dye methylene blue, finding that aging altered surface chemistry and increased adsorption. The results highlight how weathered microplastics from food packaging may accumulate organic contaminants differently than pristine particles.
The removal of methylene blue from aqueous solutions by polyethylene microplastics: Modeling batch adsorption using random forest regression
This study found that polyethylene microplastics can effectively absorb methylene blue dye from water, demonstrating that microplastics act as sponges for other pollutants in the environment. The microplastics could be reused for dye removal across multiple cycles, confirming their strong binding capacity. While this property could theoretically be useful for water cleanup, it also means that microplastics in the environment absorb and carry toxic chemicals, which can then be released inside the body when microplastics are ingested.
Aging behavior of microplastics accelerated by mechanical fragmentation: alteration of intrinsic and extrinsic properties
Researchers mechanically fragmented polystyrene, polypropylene, and PET microplastics to simulate environmental aging, finding that fragmentation alters surface chemistry, crystallinity, and heavy metal adsorption capacity, with aging degree measurable through structural changes.
Facile Prepared Fe3O4 Nanoparticles as a Nano-Catalyst on photo-Fenton process to remediation of methylene blue dye from water: Characterisation and Optimization
Researchers synthesized Fe3O4 nanoparticles via co-precipitation and evaluated their performance as nano-catalysts in a photo-Fenton process for degrading methylene blue dye from water, optimizing experimental conditions including pH, H2O2 concentration, catalyst dosage, and dye concentration under solar light.
Upcycling Glass Waste into Porous Microspheres for Wastewater Treatment Applications: Efficacy of Dye Removal
Researchers upcycled waste glass into porous recycled glass microspheres via flame spheroidisation and tested their capacity for dye removal from wastewater, finding maximum monolayer adsorption capacities of 78 mg/g for Acid Red 88 and 20 mg/g for methylene blue, with removal driven by electrostatic interactions and hydrogen bonding confirmed by XPS and FTIR analysis.
Effects and Impacts of Different Oxidative Digestion Treatments on Virgin and Aged Microplastic Particles
Researchers evaluated Fenton reagent oxidative digestion pretreatments for extracting microplastics from environmental matrices, comparing recovery efficiency and particle damage across different temperatures and reagent volumes. PVC and PET particles showed the greatest sensitivity to treatment conditions, with morphological and spectral changes confirmed by SEM and FTIR analysis.
Photo-fenton oxidation of microplastics: Impact of polymer nature
Researchers tested photo-Fenton oxidation as a treatment method for microplastics, comparing degradation efficiency across different polymer types. The study found that polymer chemistry significantly influences how quickly microplastics break down under this oxidative treatment.
Degradation of polypropylene : proportion of microplastics formed and assessment of their density.
Researchers quantified the proportion of microplastics generated during UV-driven degradation of polypropylene and assessed changes in chemical composition caused by photooxidation. The study found that UV exposure progressively fragments polypropylene and alters its surface chemistry, affecting subsequent environmental behavior and toxicity.
Differential Morphological and Physicochemical Responses of Polyvinyl Chloride and Polyamide-12 Micro- and Nanoplastics to Fenton Oxidation
Researchers applied Fenton oxidation to 5 µm PVC and polyamide-12 microplastics and characterized changes in physicochemical properties using multimodal methods. Oxidative aging altered surface chemistry, crystallinity, and particle morphology differently for each polymer, with implications for how aged MPs interact with organisms and sorb additional contaminants.
Elaborating more realistic model microplastics by simulating polypropylene's environmental ageing
This study developed more realistic model microplastics by simulating the environmental aging of polypropylene, producing laboratory particles with surface chemistry, roughness, and density closer to field-collected environmental microplastics.
Rapid oxidative fragmentation of polypropylene with pH control in seawater for preparation of realistic reference microplastics
Researchers developed a method to produce realistic reference microplastics by rapidly fragmenting polypropylene through oxidative treatment in seawater with pH control, and characterized the resulting particles using SEM/EDX to confirm their similarity to environmentally weathered microplastics.
Removal of textile microplastic fibers from water by photo-Fenton oxidation
A photo-Fenton oxidation process was tested for removing textile-derived microplastic fibers from water, achieving high removal rates under optimized conditions. The study offers a viable advanced treatment option for the challenging problem of fiber microplastics shed from laundry.
Degradation of polypropylene : proportion of microplastics formed and assessment of their density.
This study quantified microplastic formation during UV degradation of polypropylene and characterized the chemical changes in the polymer structure caused by photooxidation. UV exposure was shown to generate new particles and alter chemical composition in ways that may change microplastic toxicity and environmental behavior.
Photo-fenton oxidation of microplastics: Impact of polymer nature
Researchers investigated photo-Fenton oxidation as a treatment for microplastics, finding that degradation efficiency varies significantly by polymer type. Polymers with aromatic structures and those with greater oxidative susceptibility degraded more rapidly under photo-Fenton conditions.
Experimental and Computational Insights into Congo Red Adsorption by Polyethylene and Polyethylene Terephthalate Microplastics
Researchers investigated the adsorption of Congo red dye onto polyethylene (PE) and polyethylene terephthalate (PET) microplastics through laboratory experiments and computational modeling, finding that PE and PET exhibit distinct adsorption behaviors related to their differing surface chemistry. The study explores whether microplastics, though typically environmental hazards, could be valorized as low-cost adsorbents for textile dye removal from effluents.