We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Investigation of Heavy Metal Adsorption on Microplastics
Summary
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.
Microplastics and heavy metals represent two pollutant classes which have adverse impacts on aquatic ecosystems. This study has investigated the adsorption of two heavy metals [Lead (Pb)II and Aluminum (Al)III] on three different types of microplastics [polyethylene terephthalate (PET), polyamide (PA), ethylene vinyl acetate (EVA)]. The Scanning Electron Microscope (SEM) analysis has shown that microplastics have different surface characteristics. The effects of parameters such as the pH of solution, duration of contact, initial concentration and temperature on adsorption capacity have been examined. Experimental results have been applied to the adsorption isotherm models of Langmuir and Freundlich and it has been seen that the Freundlich model has been seen as more suitable than the Langmuir model. Moreover, the pseudo-second kinetic has been found to be more appropriate than the pseudo-first kinetic model. Adsorption percentages have changed according to the type of microplastic and working conditions. Finally, the study has investigated the potential of microplastics to act as an instrument of transport for heavy metals to the food chain and for their bioaccumulation.
Sign in to start a discussion.
More Papers Like This
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.
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.
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.
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.
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.