Experimental study on the motion characteristics and critical hydraulic parameters of microplastics in a freshwater environment

作者：Ming Dou, Zhen Wang, Yuxuan Li, Bin Sun, Yongyong Zhang, Yuze Zhou, Ruipeng Jia · 发表于：Environmental Science Processes & Impacts · 年份：2024 · DOI：10.1039/d4em00574k · 被引用次数：5 · 研究领域：Microplastics and Plastic Pollution、Recycling and Waste Management Techniques、biodegradable polymer synthesis and properties

, respectively. Horizontally, the bottom rolling velocities of microplastics vary significantly. These velocities are positively correlated with water flow velocity but are inversely proportional to the density of the microplastics and the roughness of the substrate. By combining experimental data, mathematical expressions for the critical hydraulic parameters of microplastics were derived, showing improved accuracy compared to traditional methods. This paper explores the trajectory of different types of microplastics after entering the water body and analyzes their migration mechanism in the river. The research results have certain theoretical guiding significance for revealing the migration law of microplastics in the freshwater environment.