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Interactions between microplastics and heavy metals in leachate: Implications for landfill stabilization process.

Authors :
Chen J
Huo L
Yuan Y
Jiang Y
Wang H
Hui K
Li Y
Huang Z
Xi B
Source :
Journal of hazardous materials [J Hazard Mater] 2024 Sep 12; Vol. 480, pp. 135830. Date of Electronic Publication: 2024 Sep 12.
Publication Year :
2024
Publisher :
Ahead of Print

Abstract

The emission of microplastics and heavy metals in landfills has attracted widespread attention for its stabilization process. Microplastics have become carriers of heavy metals due to their adsorption properties, affecting their environmental behavior. However, the effects of landfill stabilization on the interaction between microplastics and heavy metals in leachate are ambiguous. This work explored the abundance characteristics of microplastics and heavy metals in leachate from 10 landfills in Beijing. Overall, the average abundance of microplastics was 196.3 items/L, dominated by small particle size (20-50 µm) and film microplastics. The levels of Cr and As were much higher than other heavy metals. The average abundance of microplastics and polymer types tended to decrease as the landfill stabilization proceeded, and the surface composition of microplastics became more complex. Statistical analysis revealed that the correlations between microplastics and heavy metals in the leachate of landfill stabilization presented significant parabolic characteristics, and Cr and As were more susceptible to landfill stabilization with significant positive correlation with a wide range of microplastics such as 20-30 µm. These results were intended to provide a scientific basis for the treatment and disposal of waste leachate and the synergistic prevention and control of new and traditional pollutants.<br />Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br /> (Copyright © 2024 Elsevier B.V. All rights reserved.)

Details

Language :
English
ISSN :
1873-3336
Volume :
480
Database :
MEDLINE
Journal :
Journal of hazardous materials
Publication Type :
Academic Journal
Accession number :
39276746
Full Text :
https://doi.org/10.1016/j.jhazmat.2024.135830