Articles tagged with Plastics
Filters are ineffective and contribute to global plastic pollution, with the largest part being non-biodegradable cellulose acetate. Experts recommend banning filtered cigarettes to reduce waste and strengthen ties between environment and health communities.
Researchers at Argonne National Laboratory and top universities have developed a catalytic method to selectively convert discarded plastics into higher quality products like lubricant oils or waxes. The catalyst converts polyethylene molecules into value-added commercial products with high yield.
Researchers have developed a catalyst to upcycle polyethylene plastic waste into high-quality liquid products like motor oils and waxes. The new catalyst produces intermediate-sized hydrocarbons, increasing the value of the resulting materials.
Researchers at Northwestern University have developed a new catalytic method to upcycle single-use plastics into high-quality liquid products, such as motor oils, lubricants, and cosmetics. This breakthrough improves current recycling methods, producing fewer greenhouse gases and toxic byproducts, while contributing to a circular economy.
The KAUST team developed porous membranes from recycled poly(ethylene terephthalate) (PET), reducing the energy used in chemical separation processes. The membranes can withstand high temperatures and separate molecules of different sizes.
Researchers at Chalmers University of Technology have developed a process to break down plastic waste into molecular-level gases, which can be transformed back into new plastics. This method could enable the creation of circular use of plastic and reduce reliance on oil and fossil gas.
University of Exeter scientists are working on a scheme to collect Sargassum seaweed, which can be converted into high-quality, low-cost fertiliser and biofuel through hydrothermal liquefaction. This process could help clear beaches in Mexico and the Caribbean, while also addressing marine plastic pollution.
Researchers at the University of the Basque Country and Colorado State University have developed a class of biorenewable, biodegradable plastics that promote the circular economy. The new materials have suitable mechanical and barrier properties similar to commercial materials currently used in packaging.
A recent study by UCSF researchers found hundreds of waste items from e-cigarettes, combustible tobacco products, and cannabis products at Bay Area high schools. The study highlights the environmental hazard posed by these products' toxic chemicals and heavy metals, which are contaminating school environments and surrounding areas.
Scientists found that sunlight can break down polystyrene over a much shorter time scale than previously estimated, degrading it in decades to centuries. The researchers' study suggests that the additive content of polystyrene samples affects its degradation rate.
A Woods Hole Oceanographic Institution study finds that polystyrene breaks down faster than previously thought when exposed to sunlight, transforming into CO2 and other compounds. The research suggests additives in polystyrene play a key role in its breakdown.
Researchers found polyethylene terephthalate (PET) drinking bottles are the most abundant type of debris, increasing at 14.7% annually since the 1980s. The majority of recent bottles were manufactured in Asia, with China being a primary source.
A new filter developed at the University of Exeter can degrade and dissolve plastic microfibres released during washing, which account for over a third of ocean microplastics. The smart filter catches microfibres and uses enzymes to break them down into safe compounds.
A multidisciplinary team at the University of Pittsburgh is developing novel research paradigms to address the complex challenge of global waste through circular economy design. The project aims to advance fundamental science behind circular economy solutions, including product design and life-cycle assessment.
Researchers found that plastic teabags release a significant amount of micro- and nanoplastics into tea during brewing. The levels were thousands of times higher than previously reported in other foods, and treated water fleas showed anatomical and behavioral abnormalities.
Researchers at Newcastle University found that higher water volumes in delicate wash cycles release more plastic microfibres than standard cycles. The team discovered that the volume of water used during the wash cycle is the key factor, not spinning action, and that this can lead to a significant increase in released fibres.
Researchers tripled the shelf life of ready-to-eat macaroni and cheese from 12 months to 36 months using a special coating that keeps oxygen away. The technology has benefits not only for space travel but also for improving military meals (MREs) and consumer food products.
Researchers discovered over 1,400 substances in plastics but only identified 260 of them, highlighting the challenge of assessing their safety. The study found that three out of four everyday products contained toxic chemicals, with PVC and PUR being the most toxic.
A study by the University of South Florida and Eckerd College found four billion particles of microplastics in Tampa Bay's waters, highlighting the need to address plastic pollution. Microplastics, tiny plastic particles less than 1/8 inch, come from various sources and can harm marine life through ingestion or surface damage.
Research from the University of Surrey and Deakin's Institute for Frontier Materials found that microplastics can break down further during water treatment processes, impacting on water quality. The study highlights the need for new detection strategies to limit nano and microplastics in water treatment systems.
Francesca Verones aims to create a comprehensive life-cycle assessment tool to evaluate the environmental impacts of ocean-related activities. Her research will consider everything from shipping routes and pollutants to tourism and trash management.
A new digital platform aims to increase recyclable plastics by reducing material components and weighing functionality against resource efficiency. The DIMOP project creates a tool for product developers to make better material choices, increasing plastic recyclability.
Researchers at Staffordshire University are using artificial aquatic ecosystems called limnotrons to test plastic degradation and develop a standardized method for identifying the age of plastics. The study will help identify effective mitigation and management strategies for reducing plastic pollution in freshwater systems.
A poor diet caused permanent vision loss in a 14-year-old patient, according to a case report published in Annals of Internal Medicine. Vitamin B12 deficiency and inadequate nutrient intake led to nutritional optic neuropathy, a rare condition that can cause irreversible blindness if left untreated.
The University of Minnesota has been awarded a $20 million grant from the National Science Foundation to conduct sustainable plastics research. The center aims to create environment-friendly alternatives, including biodegradable and recyclable plastics.
Research suggests green turtles favour narrow lengths of plastic in natural colours like green and black over debris of other shapes and colours. Plastic was found in all examined turtles, with smaller ones containing more pieces.
Scientists at Tokyo University of Agriculture and Technology found that hazardous chemicals from plastics ingested by seabirds accumulate in their tissues. The study detected additives such as UV stabilizers and brominated flame retardants in 4.6% and 2.1% of seabird samples, respectively.
A study found that plastic ingestion can have a significant negative impact on seabirds, causing reduced blood calcium levels, body mass, and kidney function. The research also revealed that the simple presence of plastic is enough to cause negative consequences, regardless of the amount.
A study published by The Endocrine Society found that exposure to bisphenol S (BPS) and bisphenol F (BPF) in plastics and canned foods may contribute to childhood obesity. Children with higher levels of these chemicals in their urine were more likely to have obesity compared to those with lower levels.
Wearing magnetic eyelashes during MRI can create substantial artifact, obscuring entire phantom. The eyelashes detached from the phantom after scanning, attracted to each other due to friction and adhesion.
A preclinical study examines the role of plastic exposure on heart rhythm disruptions and arrhythmias. Exposure to mono-2-ethylhexyl phthalate (MEHP), a metabolite from Di-2-ethylhexyl phthalate (DEHP), slows atrioventricular conduction and increases the atrioventricular node effective refractory period.
A new study published in Ecotoxicology and Environmental Safety found that cigarette butts contain a bioplastic filter that harms plants, reducing germination success and shoot length of clover and grass by significant margins. The filters' chemical composition is believed to be the primary cause of damage.
Researchers at Swansea University have developed a method to recycle black plastics into carbon nanotubes for use in high-value materials like conductive films and flexible electronics fabrics. This process could reduce plastic waste and help solve the problem of lost electricity during transmission and distribution.
A team of computer scientists created a prototype kit called BlocKit to help people understand how blockchain works and can be used. The kit, made from everyday objects, represents 11 key aspects of blockchain infrastructure and was evaluated in a study involving experienced Bitcoin users.
A study by Penn State researchers found that when consumers are reminded of the products that their recyclables can be turned into, they are more likely to recycle. The team conducted a series of studies where participants were shown advertisements featuring product transformation, and results showed a significant increase in recycling...
Researchers found over 1,000 entangled shark and ray individuals, with true numbers likely higher due to under-studied cases. Entanglement causes significant animal welfare concerns, despite being considered a lesser threat than commercial fishing.
Researchers at Shinshu University have discovered acid hydrolysis of vinyl polymer breaking down into salicylic acid and acetic acid, forming the basis for aspirin production. This innovative process has the potential to recycle vinyl on an industrial scale, reducing plastic waste and its environmental impact.
Researchers create flexible optical plastic with nano-Enoki mushroom structures that repel liquids while maintaining transparency. The surface resists staining from various liquids, including blood, coffee, and olive oil.
Three UA professors, Li Jia, Shi-Qing Wang, and Mesfin Tsige, have received NSF grants for research projects on bio-renewable polymers, mechanical performance of glassy and semicrystalline polymers, and multiscale modeling of mechanically-interlocked macromolecules. The total award value is over $1.1 million.
A new process uses radicals to oxidize polypropylene's methyl groups, making it reactive without breaking the polymer chain. This selective oxidation results in a hydrophilic surface with carboxylic acid groups, enabling surface modification and dyeing.
A study by Universitat Rovira i Virgili researchers found that up to 57% of plastics in Tarragona sea water are microscopic fibers from clothes, which come from treatment parts and can block digestive tracts. The presence of these microplastics poses a health risk due to their potential to absorb toxic heavy metals and organic molecules.
A new study published in Scientific Reports reveals that microplastic particles are common throughout Monterey Bay, from the surface to the seafloor. The research found that small ocean animals are consuming microplastic, introducing it into food webs and highlighting a growing concern for marine ecosystems.
Researchers found that eukaryotic microorganisms, such as dinoflagellates like Pfiesteria piscicida, thrive on microplastic particles, reaching densities 50 times higher than in surrounding water. This discovery highlights the potential for microplastics to transport microorganisms over long distances.
Researchers estimate that Americans consume between 74,000 to 113,000 microplastic particles annually, depending on age and sex. This analysis suggests significant exposure to microplastics through food consumption, especially bottled water versus tap water.
Researchers have discovered a method to convert plastic waste into jet fuel using activated carbon as a catalyst. The process produces high-quality fuel with minimal environmental impact, offering a promising solution to the global plastic crisis.
Researchers at Rice University have developed a cheap and clean method to handle carbon nanotubes, improving lab safety. The protocol involves proper attire, containment systems, and efficient transfer procedures, making it possible for labs to safely work with these materials on a large scale.
A new study reveals a 'threading' mechanism where linear molecules thread through ring polymers, causing shape fluctuations under fluid flow. This insight may lead to new processing methods for sustainable polymer materials.
The survey found an estimated 414 million pieces of plastic debris on the islands' beaches, including single-use consumer items like shoes and toothbrushes. The total volume dwarfs that found on Henderson Island, indicating a need for urgent action to reduce plastic production and consumption.
Researchers at Kumamoto University have developed a novel e-waste recycling method using pulsed power, which successfully separates metal from plastic in CD-ROMs. The technique uses high-voltage electrical discharges to break down materials, resulting in efficient separation and minimal environmental impact.
Researchers used machine learning to predict mechanical properties of metal organic frameworks (MOFs), which could be used for water extraction, gas storage, and hydrogen fuel cells. The results enable faster material characterization and design at the molecular scale.
Lab tests show plastic chemicals impair growth and function of ocean's most abundant photosynthetic bacteria, Prochlorococcus. Exposure to plastics alters gene expression, potentially harming entire ecosystem.
A URFU student is developing a 3D printer that can create high-temperature implants, such as polyetheretherketone, which have a density comparable to the musculoskeletal system. This innovation has the potential to reduce physical exertion in patients with endoprostheses.
Scientists at Berkeley Lab created a next-generation plastic that can be recycled endlessly without losing its properties. The new material, poly(diketoenamine), can be disassembled and reassembled from its constituent parts, allowing for the recovery of original monomers.
Researchers repurposed shrink films to make strong grippers that can encapsulate materials or be incorporated into soft robotics. The grippers were made by patterned black ink onto polystyrene sheets, which then wrapped around objects to grip them.
Researchers have created a new method of ice removal using materials designed with low interfacial toughness, reducing the amount of force required for detachment. This approach can be applied to large surfaces like wind-turbine blades and airplane wings, minimizing catastrophic failure.
A new research paper proposes an alternative technology - renewable electrosynthesis - to replace fossil fuels in the production of chemicals, plastics, clothing, and fertilizers. The process uses CO2 from the air, renewable electricity, and innovative catalysts to create carbon-neutral or even carbon-negative products.
Researchers have developed an energy-efficient method to synthesize bioplastic ingredients, overcoming a key limitation in large-scale production. The new technique uses a gold nanoparticle catalyst and achieves high conversion rates, making it more practical for commercial production of sustainable 'green products'.
Researchers at UC Santa Barbara have conducted the first global assessment of plastic's life cycle greenhouse gas emissions, finding that current strategies are insufficient to curb emissions. Recycling and replacing fossil-based energy with renewable sources offer promising solutions, but significant reductions will require unpreceden...
The study found major dioxins detected were polybrominated and mixed halogenated dibenzofurans, suggesting PBDEs as a source. High concentrations of PXDFs indicate these 'hidden' dioxins contribute substantially to e-waste-derived dioxin toxicity.
Researchers have decoded the structure of MHETase, an enzyme that breaks down PET plastics into their basic building blocks. This discovery paves the way for developing more efficient enzymes to recycle PET, a key step towards a circular economy and mitigating plastic waste.