Zhang Wenlong, Wang Weixue, Yao Zhimin, Zhang Tengyue, Jiao Huifeng, Wang Hongjie
Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding 071002, China.
Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding 071002, China; Engineering Research Center of Ecological Safety and Conservation in Beijing-Tianjin-Hebei (Xiong'an New Area) of MOE, China.
J Hazard Mater. 2025 Aug 15;494:138529. doi: 10.1016/j.jhazmat.2025.138529. Epub 2025 May 8.
Extensive research has been conducted on the leaching behavior and risks of the leachate of tire wear particles (TWPs) in aquatic environments. However, the leaching-driven transformations of TWPs and the subsequent environmental impacts have been largely overlooked. This work examines the changes in physicochemical properties of TWPs during leaching in several water bodies, thereby facilitating a more thorough assessment of the environmental impacts. The results revealed that the environmental behavior related properties of TWPs, including surface morphology, pores, contact angel, zeta potential, functional groups, and surface adsorption sites varied at different levels during leaching. The ionic strength and organic matter content of water body highly determine the above transformations. The carbon index (CI) and O/C ratio of TWPs increased by 55.40 % and 14.27 % after leached in the water for 30 days, while the adsorption capacity of the TWPs for tetracycline (TC) and oxytetracycline (OTC) decreased by 27 % and 24.63 %, respectively. Herein, the changes in the functional groups and polarity during leaching highly influenced the adsorption performance of leached-TWPs. This study provides novel insight into understanding the leaching behavior of TWPs in aquatic environments and highlights an urgent need to assess the environmental implications of leaching-driven transformations of TWPs.
针对轮胎磨损颗粒（TWPs）浸出液在水生环境中的浸出行为及风险，已开展了广泛研究。然而，TWPs浸出驱动的转化过程及其后续环境影响在很大程度上被忽视了。本研究考察了TWPs在几种水体中浸出过程中理化性质的变化，从而有助于更全面地评估其环境影响。结果表明，TWPs与环境行为相关的性质，包括表面形态、孔隙、接触角、zeta电位、官能团和表面吸附位点在浸出过程中均有不同程度的变化。水体的离子强度和有机质含量高度决定了上述转化过程。TWPs在水中浸出30天后，其碳指数（CI）和O/C比分别增加了55.40%和14.27%，而TWPs对四环素（TC）和土霉素（OTC）的吸附容量分别降低了27%和24.63%。在此，浸出过程中官能团和极性的变化对浸出后TWPs的吸附性能有很大影响。本研究为理解TWPs在水生环境中的浸出行为提供了新的见解，并强调迫切需要评估TWPs浸出驱动转化的环境影响。
