Unveiling Impact of Polyamide Microplastics on Ceftiofur Sodium Migration in Porous Media: Experimental and Modeling Insights

IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Water, Air, & Soil Pollution Pub Date : 2025-05-02 DOI:10.1007/s11270-025-08089-6

Yanna Chen, Ming Wu, Zhou Cheng, Yanru Hao, Cehui Mo, Qusheng Li, Jianfeng Wu, Jichun Wu, Bill X. Hu

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Abstract

Polyamide (PA) and cephalosporin, specifically ceftiofur sodium (CTFS), are commonly found in soil environments. The impact of microplastics on the transport of cephalosporin cannot be disregarded due to their surface hydrophobicity and large specific surface area. This study investigates the influence of PA microplastics on the transport of CTFS in porous media through a combination of experimental and numerical modeling approaches, investigating how environmental factors affect CTFS transport. The adsorption of CTFS on PA is inversely correlated with the increase in ionic strength, specifically with the presence of Na⁺, Ca²⁺ and Ba²⁺ ions. This suggests a significant impact of ionic strength on the adsorption process. Experimental findings indicate that higher mass fractions of PA result in greater retention of CTFS within the columns. Conversely, elevated flow velocities and initial CTFS concentrations facilitate the migration of CTFS in PA-silica sand (SS) mixed porous media. Additionally, the migration of CTFS is modeled using the advection–dispersion equation (ADE) with first-order kinetics, yielding a coefficient of determination (R²) exceeding 0.95. Subsequently, the correlation between kinetic parameters of CTFS and various environmental factors such as PA%, flow velocity, initial concentration, and ionic types and strengths is determined. These results contribute to a deeper understanding of the environmental interactions between microplastic particles and antibiotics within porous media, and offer a scientific foundation for precise forecasting and evaluation of the environmental hazards posed by microplastic contamination in soil-groundwater system.

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揭示聚酰胺微塑料对头孢替弗钠在多孔介质中迁移的影响：实验和建模见解

聚酰胺（PA）和头孢菌素，特别是头孢替弗钠（CTFS），通常存在于土壤环境中。微塑料由于其表面疏水性和较大的比表面积，对头孢菌素运输的影响不容忽视。本研究通过实验与数值模拟相结合的方法研究了PA微塑料对CTFS在多孔介质中输运的影响，探讨了环境因素对CTFS输运的影响。CTFS在PA上的吸附与离子强度的增加呈负相关，特别是与Na+、Ca2+和Ba2+离子的存在呈负相关。这表明离子强度对吸附过程有重要影响。实验结果表明，PA的质量分数越高，CTFS在柱内的保留率越高。相反，提高流速和初始CTFS浓度有利于CTFS在PA-silica sand （SS）混合多孔介质中的迁移。此外，CTFS的迁移使用一阶动力学的平流-弥散方程（ADE）进行建模，得到的决定系数（R2）超过0.95。随后，确定了CTFS的动力学参数与各种环境因素（如PA%、流速、初始浓度、离子类型和强度）的相关性。这些结果有助于更深入地了解多孔介质中微塑料颗粒与抗生素之间的环境相互作用，为精确预测和评价土壤-地下水系统中微塑料污染的环境危害提供科学依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.