Marine microplastics (MPs) are exposed to environmental factors, which produce aging, weathering, surface cracking, yellowing, fragmentation and degradation, thereby changing the structure and behavior of the plastic. This degradation also has an influence on the adsorption of persistent organic pollutants over the microplastic surface, leading to increased concentration with aging. The degradation state affects the microplastic color over time; this is called yellowing, which can be quantified using the Yellowness Index (YI). Weathering and surface cracking is also related with the microplastic yellowing, which can be identified by Fourier transform infrared spectroscopy (FTIR). In this study, the degradation state of marine microplastic polyethylene pellets with different aging stages is evaluated and quantified with YI determination and the analysis of FTIR spectrums. A color palette, which relates to the microplastic color and YI, was developed to obtain a visual percentage of this index. The relation with the adsorption rate of persistent organic pollutant over the microplastic surface was also determined.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9003515 | PMC |
| http://dx.doi.org/10.3390/polym14071305 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Adsorption behavior of Cu(II) on UV-aged polyethylene terephthalate and polypropylene microplastics in aqueous solution.
Environ Sci Pollut Res Int
January 2025
Department of Civil Engineering, National Institute of Technology Andhra Pradesh, Tadepalligudem, India.
Plastics are widely used across various applications from packing to commercial products. Once discarded, they were subjected to environmental stresses, causing them to degrade into microplastics (MPs). These small, invisible pollutants pose a significant threat to aquatic ecosystems, gradually compromising the resilience and vitality of the natural environment.
View Article and Find Full Text PDFRevisiting Dipole-Induced Fluorinated-Anion Decomposition Reaction for Promoting a LiF-Rich Interphase in Lithium-Metal Batteries.
Nanomicro Lett
January 2025
Henan Institutes of Advanced Technology, Zhengzhou University, Zhengzhou, 450003, People's Republic of China.
Building anion-derived solid electrolyte interphase (SEI) with enriched LiF is considered the most promising strategy to address inferior safety features and poor cyclability of lithium-metal batteries (LMBs). Herein, we discover that, instead of direct electron transfer from surface polar groups to bis(trifluoromethanesulfonyl)imide (TFSI) for inducing a LiF-rich SEI, the dipole-induced fluorinated-anion decomposition reaction begins with the adsorption of Li ions and is highly dependent on their mobility on the polar surface. To demonstrate this, a single-layer graphdiyne on MXene (sGDY@MXene) heterostructure has been successfully fabricated and integrated into polypropylene separators.
View Article and Find Full Text PDFSingle-atom lead ion adsorption behavior on TiCO MXene under different electrode potentials.
Phys Chem Chem Phys
January 2025
School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, P. R. China.
First-principles calculations, particularly density functional theory (DFT) combined with D3 dispersion correction (DFT+D3), have proven to be valuable tools in simulating the adsorption of lead ions on TiCO surfaces. However, conventional theoretical models assume electrically neutral systems under vacuum conditions, neglecting the solvent environment and electrode potential's crucial effects. This study employed an implicit solvent model, treating the solvent as a continuous and homogeneous medium to capture the influence of different solvents by varying their dielectric constants.
View Article and Find Full Text PDFChromium Removal Using a Basalt Rock Adsorbent in a Packed Bed Column for Efficient Environmental Protection.
ACS Omega
January 2025
Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
The discharge of chromium(VI) into the environment is becoming a significant global concern. Despite the existence of numerous techniques for chromium(VI) removal, substantial challenges persist in effectively mitigating this issue. Therefore, this study investigates the feasibility of using low-cost basalt rock as an adsorbent for chromium(VI) removal.
View Article and Find Full Text PDFStudy on the Mechanism of Gas Diffusion in Coal Particles under the Coupled Effects of Gas Pressure and Temperature.
ACS Omega
January 2025
China Coal Technology and Engineering Group Information Technology Co., Ltd., Xian 710000, P. R. China.
To investigate the gas diffusion mechanism in coal particles under the coupled effects of gas pressure and temperature, a low-temperature liquid nitrogen adsorption experiment was first conducted to obtain the pore structure characteristics and pore size distribution patterns of the coal samples. Subsequently, a methane diffusion experiment was performed on coal particles with simultaneous increases in gas pressure and temperature using a unipore model to solve the diffusion coefficient. Finally, models for the diffusion coefficient of free-state methane and adsorbed-state methane were established, with their applicability discussed.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!