The University of Florence and the University of Girona continue to push the boundaries of environmental research, as demonstrated by their active participation in the prestigious AGU24 conference. This globally recognized event serves as a key platform for scientific discussions on pressing environmental challenges, bringing together researchers, policymakers, and industry professionals to share insights and advancements.

Representing both institutions, researcher Mirco Mancini delivered an insightful presentation titled “How Do They Sink? Influence of Suspended Sediment on Microplastic (MP) Settling Velocity.” This study explores the impact of suspended sediments (SS) on the settling behavior of microplastics (MPs) in freshwater environments. Given the growing concern over microplastic pollution and its implications for aquatic ecosystems, understanding the mechanisms governing MP transport is crucial for assessing environmental risks and developing mitigation strategies.

M. Mancini’s research focuses on how SS concentrations influence the sedimentation of MPs, a factor that has been largely overlooked in previous studies. Through a series of controlled laboratory experiments, the research team analyzed twelve types of MPs with various shapes and surface properties to determine how they interact with different levels of SS. Preliminary findings indicate that the presence of SS significantly affects the settling velocity of MPs, altering their transport and deposition patterns in water bodies. Additionally, the study examined how factors such as sediment size and MP shape influence the scavenging efficiency, offering a more comprehensive understanding of MP behavior in aquatic environments.

One of the key contributions of this research is the development of a new predictive model for MP settling velocity in the presence of SS. This model provides a valuable tool for researchers and environmental policymakers seeking to improve microplastic transport models, ultimately enhancing strategies for pollution assessment and ecosystem management. The findings underscore the importance of considering SS concentration as a fundamental parameter when evaluating the fate of MPs in freshwater systems.

The participation of M. Mancini and his team at AGU24 highlights the University of Florence and the University of Girona’s commitment to advancing environmental research and addressing critical ecological challenges. Their work not only provides significant insights into microplastic pollution dynamics but also offers practical applications for improving water quality monitoring and pollution mitigation efforts.