We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
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.
Both heavy metals and microplastic pollutants are ubiquitous in the aquatic environment. The uptake of lead(II) ions from aqueous solutions onto aged nylon microplastics was investigated as a function of pH, contact time, temperature, supporting electrolyte concentration and fulvic acid concentration in batch studies. The effect of surface properties on the adsorption behavior of lead(II) was investigated with scanning electron microscope equipped with the energy dispersive X-ray spectroscope (SEM-EDAX), Fourier transform-infrared (FTIR) spectroscopy, thermal gravimetric analysis (TGA), X-ray diffraction (XRD) and differential scanning calorimetric (DSC). The adsorption kinetics conformed to the pseudo-second order equation, Elovich equation and intraparticle diffusion model well. The experimental data of the adsorption process was fitted to the Langmuir and Freundlich adsorption isotherms and the parameters were estimated. The lead(II) uptake on aged nylon microplastics was spontaneous and endothermic in nature. The lead(II) adsorption was significantly dependent on the sodium chloride concentrations, initial solution pH and fulvic acid concentrations. Results of this study highlight the importance of surface carboxyl function group of aged nylon microplastics in controlling lead(II) adsorption.
More Papers Like This
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.
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.
Insights Into the Adsorption Behavior of Polyethylene Microplastics Towards Lead(II) Ions
AI summary Read the abstract
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.
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.
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.
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.