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Agronomy
Volume 15
Issue 12
10.3390/agronomy15122802
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Effects of Co-Existing Microplastics on Adsorption–Desorption Behavior of Perfluorooctanoic Acid in Soil: Co-Sorption and Mechanism Insight

by
Wei Zhao
1,
Guilan Chen
2,
Jing Jiao
1,
Zhihai Liu
1,
Yuanming Zhou
2,
Guocheng Liu
1,3,
Chengzhi Zhou
1,3,
Qinghua Yan
1,3,
Shuaishuai Xin
1,3,
Yanjun Xin
1,3 and
Qianwen Wang
2,3,*
1
Qingdao Engineering Research Center for Rural Environment, College of Resources and Environment, Qingdao Agricultural University, Qingdao 266109, China
2
Central Laboratory, Qingdao Agricultural University, Qingdao 266109, China
3
Academy of Dongying Efficient Agricultural Technology and Industry on Saline and Alkaline Land in Collaboration with Qingdao Agricultural University, Dongying 257347, China
*
Author to whom correspondence should be addressed.
Agronomy 2025, 15(12), 2802; https://doi.org/10.3390/agronomy15122802 (registering DOI)
Submission received: 12 November 2025 / Revised: 2 December 2025 / Accepted: 4 December 2025 / Published: 5 December 2025
(This article belongs to the Section Agricultural Biosystem and Biological Engineering)
Versions Notes

Abstract

Microplastics (MPs) and perfluorooctanoic acid (PFOA) are ubiquitously present in agroecosystems, which can cause varying degrees of environmental damage. This study reports the investigation of the effect of MPs on PFOA adsorption by soil. A comprehensive analysis was performed on the adsorption–desorption dynamics of PFOA by MPs and soil under different conditions. The surface morphology of MPs and their interaction with PFOA were characterized. Irregularly shaped MPs facilitated accurate simulation of real-world conditions, influencing the adsorption quantity of PFOA in soil. Additionally, the peak intensity of various preadsorption and post-adsorption MP functional groups was altered, indicating that MPs augmented PFOA adsorption. The kinetics of PFOA adsorption followed the quasi-second-order reaction, and the isotherm data aligned well with the Freundlich model. This study reveals the mechanism by which the co-sorption of PFOA and MPs in agroecosystems affects their respective environmental behaviors, providing basic research data for the control of pollutants in agroecosystem soil.
Keywords: farmland soil; microplastics; adsorption; perfluorochemicals; agricultural ecological health farmland soil; microplastics; adsorption; perfluorochemicals; agricultural ecological health

Share and Cite

MDPI and ACS Style

Zhao, W.; Chen, G.; Jiao, J.; Liu, Z.; Zhou, Y.; Liu, G.; Zhou, C.; Yan, Q.; Xin, S.; Xin, Y.; et al. Effects of Co-Existing Microplastics on Adsorption–Desorption Behavior of Perfluorooctanoic Acid in Soil: Co-Sorption and Mechanism Insight. Agronomy 2025, 15, 2802. https://doi.org/10.3390/agronomy15122802

AMA Style

Zhao W, Chen G, Jiao J, Liu Z, Zhou Y, Liu G, Zhou C, Yan Q, Xin S, Xin Y, et al. Effects of Co-Existing Microplastics on Adsorption–Desorption Behavior of Perfluorooctanoic Acid in Soil: Co-Sorption and Mechanism Insight. Agronomy. 2025; 15(12):2802. https://doi.org/10.3390/agronomy15122802

Chicago/Turabian Style

Zhao, Wei, Guilan Chen, Jing Jiao, Zhihai Liu, Yuanming Zhou, Guocheng Liu, Chengzhi Zhou, Qinghua Yan, Shuaishuai Xin, Yanjun Xin, and et al. 2025. "Effects of Co-Existing Microplastics on Adsorption–Desorption Behavior of Perfluorooctanoic Acid in Soil: Co-Sorption and Mechanism Insight" Agronomy 15, no. 12: 2802. https://doi.org/10.3390/agronomy15122802

APA Style

Zhao, W., Chen, G., Jiao, J., Liu, Z., Zhou, Y., Liu, G., Zhou, C., Yan, Q., Xin, S., Xin, Y., & Wang, Q. (2025). Effects of Co-Existing Microplastics on Adsorption–Desorption Behavior of Perfluorooctanoic Acid in Soil: Co-Sorption and Mechanism Insight. Agronomy, 15(12), 2802. https://doi.org/10.3390/agronomy15122802

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