We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Mechanism analysis of heavy metal lead captured by natural-aged microplastics
AI summary Read the abstract
The mechanism by which naturally aged microplastics capture lead (Pb(II)) from aqueous solution was investigated by comparing pristine and aged particles. Aged microplastics adsorbed more Pb(II) than pristine ones, with weathering-induced surface oxidation and increased oxygen-containing functional groups driving the enhanced metal capture capacity.
In this paper, the mechanism of lead (Pb(II)) captured by natural-aged microplastics in aqueous medium was explored. Compared with pristine microplastics, the natural-aged microplastics were more efficient for adsorbing Pb(II). After treated by hydrochloric acid (HCl) or sodium hydroxide (NaOH), the organic film was damaged and the adsorption efficiency decreased obviously, which proved that the organic film played an important role in Pb(II) capture. The fitting results of the isothermal adsorption model showed that this adsorption process was more in line with Langmuir model than with Freundlich model, and the maximum adsorption amount (13.60 mg/g) could also be obtained from the Langmuir model. Based on the comprehensive analysis of XRD, XPS and FTIR results, it was found that Pb(II) capture by natural-aged microplastics was mainly determined by the oxygen containing functional groups (carboxyl and hydroxyl groups) on the organic film. Besides, the measurement results of Zeta potential and pH effect showed that electrostatic interaction was mainly responsible for the Pb(II) capture process.
More Papers Like This
Investigation of the adsorption behavior of Pb(II) onto natural-aged microplastics as affected by salt ions
AI summary Read the abstract
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.
Study on the Adsorption Behavior and Mechanism of Heavy Metals in Aquatic Environment before and after the Aging of Typical Microplastics
AI summary Read the abstract
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.
Pb(II) uptake onto nylon microplastics: Interaction mechanism and adsorption performance
AI summary Read the abstract
Researchers investigated how aged nylon microplastics adsorb lead(II) ions from water, finding that surface weathering increased adsorption capacity and that the process followed pseudo-second-order kinetics. The study clarifies the mechanism by which microplastics can act as vectors for heavy metal contamination in aquatic environments.
Comparative analysis of kinetics and mechanisms for Pb(II) sorption onto three kinds of microplastics
AI summary Read the abstract
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.
Enhancement of Pb(II) adsorption by aged polyethylene terephthalate microplastics in the presence of microalgae: kinetic and mechanistic
AI summary Read the abstract
UV, permanganate, and alkaline aging treatments all increased PET microplastic adsorption capacity for lead, and Microcystis aeruginosa microalgae further enhanced Pb(II) adsorption by coating PET surfaces with organic matter, demonstrating how environmental aging and biofouling amplify MP-metal interactions.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.