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 Adsorption and desorption characteristics of heavy metals onto conventional and biodegradable plastics.
ClearInsights into interactions of biodegradable and non-biodegradable microplastics with heavy metals
Researchers found that biodegradable polylactic acid microplastics can adsorb heavy metals like cadmium, copper, and chromium at rates comparable to or exceeding conventional non-biodegradable plastics, suggesting biodegradable microplastics may also serve as carriers of toxic metals in the environment.
Adsorption behavior of heavy metals onto microplastics derived from conventional and biodegradable commercial plastic products
Researchers tested how well different types of microplastics, including both conventional and biodegradable plastics, absorb heavy metals like lead, nickel, copper, zinc, and cadmium from water. They found that all microplastic types could pick up significant amounts of heavy metals, with biodegradable plastics sometimes absorbing even more than conventional ones. This is concerning because microplastics carrying heavy metals could deliver a double dose of contamination to organisms that ingest them.
Biodegradable microplastics adsorb more Cd than conventional microplastic and biofilms enhance their adsorption
Researchers compared how biodegradable polylactic acid and conventional polyethylene microplastics adsorb the heavy metal cadmium, with and without biofilm development from outdoor weathering. They found that pristine PLA adsorbed significantly more cadmium than pristine PE, and that biofilms forming on weathered plastics were responsible for most of the increased cadmium uptake. The study suggests that biodegradable microplastics in agricultural soils may pose a greater risk for heavy metal transport than conventional plastics.
Study on the Adsorption Behavior and Mechanism of Heavy Metals in Aquatic Environment before and after the Aging of Typical Microplastics
Researchers investigated the adsorption behavior and mechanisms of heavy metals by typical microplastics before and after environmental aging, finding that aging significantly alters microplastics' surface properties and capacity to bind metals such as cadmium and lead in aquatic systems.
Microplastics as a vehicle of heavy metals in aquatic environments: A review of adsorption factors, mechanisms, and biological effects
This review summarizes how microplastics in water can absorb and carry toxic heavy metals like lead and cadmium, making them more dangerous to aquatic life than either pollutant alone. Environmental factors such as water acidity, salinity, and organic matter influence how much metal sticks to microplastic surfaces. Since contaminated seafood is a major source of human exposure, understanding these interactions is important for assessing health risks.
Aging properties of polyethylene and polylactic acid microplastics and their adsorption behavior of Cd(II) and Cr(VI) in aquatic environments
Researchers compared how polyethylene and polylactic acid (PLA) microplastics age in the environment and how that aging affects their ability to absorb heavy metals like cadmium and chromium from water. They found that aging changed the surface chemistry of both plastic types, increasing their capacity to pick up these toxic metals. The findings matter because aged microplastics in the environment may concentrate and transport more pollutants than fresh plastic particles.
The potential of microplastics as carriers of metals
Five types of microplastics were tested for their ability to adsorb heavy metals (Cd, Co, Cr, Cu, Ni, Pb, Zn) in different water matrices, finding significant adsorption of lead, chromium, and zinc—especially on polyethylene and PVC—with surface area and porosity as key drivers. The study identifies microplastics as potential vectors for heavy metal transport and transfer through aquatic food chains.
Microplastics as adsorbent for Pb2+ and Cd2+: A comparative study of polypropylene, polyvinyl chloride, high-density polyethylene, and low-density polyethylene
Researchers compared how four common types of microplastics adsorb lead and cadmium heavy metals in aquatic environments. The study found that polypropylene had the highest adsorption capacity for both metals, with oxygen-containing functional groups playing a key role in the adsorption process, suggesting that different microplastic types pose varying levels of environmental risk as heavy metal carriers.
Aging characteristics of polylatic acid microplastics and their adsorption on hydrophilic organic pollutants: mechanistic investigations and theoretical calculations
Researchers characterized how polylactic acid microplastics undergo UV and thermal aging in aquatic environments, finding that aging altered surface chemistry, increased hydrophilicity, and enhanced adsorption of heavy metal pollutants—raising concerns about aged biodegradable plastics as carriers of co-contaminants.
Adsorption characteristics of cadmium onto microplastics from aqueous solutions
Laboratory adsorption experiments characterized how cadmium is taken up by microplastics of different polymer types from aqueous solutions, finding adsorption capacity varied significantly with polymer chemistry, particle size, and solution conditions. The results help predict how microplastics in contaminated waterways accumulate and transport cadmium, a highly toxic heavy metal.
Effect of biofilm colonization on Pb(II) adsorption onto poly(butylene succinate) microplastic during its biodegradation
Researchers found that biofilm colonization on biodegradable PBS microplastics during degradation increased lead adsorption roughly tenfold compared to virgin plastic, suggesting that degrading biodegradable plastics may concentrate heavy metals more effectively in aquatic environments.
The effect of UV exposure on conventional and degradable microplastics adsorption for Pb (II) in sediment
Researchers studied how UV aging affects the ability of conventional polyethylene and degradable polylactic acid microplastics to adsorb lead ions from aquatic sediment. They found that UV aging increased the surface area and oxygen content of both plastic types, enhancing their capacity to adsorb heavy metals. The study suggests that weathered microplastics in the environment may be more effective carriers of heavy metal contamination than pristine particles.
Adsorption of heavy metals on biodegradable and conventional microplastics in the Pearl River Estuary, China
Researchers compared how biodegradable and conventional microplastics absorb heavy metals in an estuary environment over 12 months. Biodegradable microplastics absorbed more copper, lead, and arsenic than conventional plastics, suggesting they may actually pose greater risks as carriers of toxic metals. The findings challenge the assumption that biodegradable plastics are always safer for the environment, since they can concentrate dangerous heavy metals and potentially transfer them into the food chain.
Comparison of lead adsorption on the aged conventional microplastics, biodegradable microplastics and environmentally-relevant tire wear particles
Researchers compared how different types of aged microplastics, including tire wear particles and biodegradable polylactic acid, adsorb the heavy metal lead from water. The study found that aging significantly increased adsorption capacity across all types, with tire wear particles showing the highest lead uptake, and that environmental factors like humic acid concentration had complex effects on the adsorption process.
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.
Insights into effects of drying–wetting cycles on dissolved organic matter and Cd bioavailability in riparian sediments amended with microplastics
This study examined how microplastics interact with cadmium, a toxic heavy metal, in riverside sediments during wet and dry cycles that mimic natural flooding conditions. Biodegradable polylactic acid microplastics increased cadmium availability more than conventional plastics, likely because they release chemical additives as they break down. The results suggest that even biodegradable plastics in soil and sediment can make heavy metal contamination worse, raising concerns about their impact on water quality and food safety.
Adsorption of Cadmium, Copper and Lead on Polypropylene and Polyethylene Microplastics
This laboratory study measured how cadmium, copper, and lead adsorb onto polypropylene and polyethylene microplastic particles in seawater, finding that microplastics concentrate these toxic metals at levels well above surrounding water concentrations. The results reinforce concerns that microplastics act as carriers of heavy metal contamination in marine ecosystems.
Investigation of Heavy Metal Adsorption on Microplastics
Researchers investigated the adsorption of lead (Pb) and aluminium (Al) onto polyethylene terephthalate, polyamide, and ethylene vinyl acetate microplastics, finding that pH, contact time, initial metal concentration, and temperature all significantly affect adsorption capacity. Experimental data were best described by Langmuir and Freundlich isotherm models, confirming that microplastics act as vectors for heavy metal contaminants in aquatic environments.
Metal adsorption by naturally aged polymers in the river ganga: An environmental assessment
Researchers measured the adsorption of metals onto naturally aged microplastic polymers collected from the Ganga River, examining how plastics weathered under real environmental conditions accumulate heavy metals. Aged microplastics from the river showed significant metal adsorption capacity, suggesting they act as vectors transferring metals to aquatic organisms through the food chain.
Features of Heavy Metals Sorption by Microplastics in Environmentally Relevant Conditions
Experiments using aged PET microplastics in natural lake water showed that the particles sorb heavy metals (cobalt, nickel, copper, cadmium, lead) in environmentally relevant concentrations, but the sorption isotherms differed from those measured in synthetic laboratory solutions. This matters because microplastics acting as vectors for heavy metals in real freshwater conditions could increase metal bioavailability and toxicity to aquatic life and potentially to humans who drink the water.
Long-Term Sorption of Metals Is Similar among Plastic Types: Implications for Plastic Debris in Aquatic Environments
Researchers deployed five types of common plastic in San Diego Bay for up to 12 months and measured how much metal accumulated on each type. They found that all plastics accumulated similar concentrations of metals over the long term, regardless of polymer type, suggesting that metal sorption is driven more by surface biofilm formation than by plastic chemistry. The findings indicate that any type of plastic debris in aquatic environments can become a carrier for potentially toxic metals.
Metal adsorption by microplastics in aquatic environments under controlled conditions: exposure time, pH and salinity
Scientists systematically varied pH, salinity, and exposure time during metal adsorption experiments on different microplastic types, finding that pH had the greatest influence on metal uptake, with higher pH favoring adsorption of copper, lead, and cadmium onto most tested polymers.
Insights into adsorption behavior and mechanism of Cu(II) onto biodegradable and conventional microplastics: Effect of aging process and environmental factors
Researchers compared how biodegradable and conventional microplastics adsorb copper ions from water, examining how aging processes and environmental factors influence this interaction. The study found that aged microplastics had a greater capacity to bind copper than fresh ones, suggesting that weathered plastic debris in the environment may serve as carriers for heavy metal contaminants.
Adsorption of trace metals by microplastic pellets in fresh water
Researchers measured the adsorption of trace metals by microplastic pellets in freshwater, finding that pellets accumulate metals from the surrounding water, potentially concentrating metals and altering their bioavailability to aquatic organisms.