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Mechanism and characterization of microplastic aging process: A review.
Qinwei Lu1, Yi Zhou1,2, Qian Sui1,2
1State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237 China.
Frontiers of Environmental Science & Engineering
|March 20, 2023
Summary
Plastic aging accelerates microplastic (MP) pollution and toxicity. This review examines natural and artificial aging processes and characterization methods to understand MP behavior and mitigate environmental harm.
Area of Science:
- Environmental Science
- Polymer Science
- Analytical Chemistry
Background:
- Increasing petroleum-based plastic production leads to widespread environmental pollution.
- Microplastics (MPs), formed from macroplastic fragmentation, bio-accumulate due to small size and slow degradation.
- Plastic aging alters physicochemical properties, enhancing pollutant adsorption and increasing toxicity.
Purpose of the Study:
- To review the latest progress in natural and artificial aging processes of microplastics.
- To summarize characterization methods for determining microplastic aging mechanisms.
- To discuss the degradation of biodegradable plastics and their effectiveness in solving pollution.
Main Methods:
- Literature review of natural aging processes and characterization techniques.
- Review of artificial aging methods for microplastic pollutants.
- Analysis of degradation by-products and environmental impact of biodegradable plastics.
Main Results:
- Microplastic aging is a critical factor in their environmental persistence and toxicity.
- Existing characterization methods for microplastic aging are insufficient for qualitative and quantitative analysis.
- Biodegradable plastics' long-term effectiveness in mitigating plastic pollution remains uncertain.
Conclusions:
- Further research is needed on specialized characterization methods for microplastic aging.
- Understanding microplastic aging mechanisms is crucial for developing strategies to reduce white pollution.
- Future research should focus on mitigating microplastic toxicity through controlled aging processes.
