梯度离子强度下多孔介质中聚丙烯、聚氯乙烯、聚对苯二甲酸乙二醇酯和聚甲基丙烯酸甲酯微塑料的输运

IF 3.6 4区环境科学与生态学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY

Environmental Pollutants and Bioavailability Pub Date : 2023-10-15 DOI:10.1080/26395940.2023.2269315

Shaohua Cao, Shunan Dong, Lei Wang, Emmanuel B Suakollie, Huiyi Wu, Yulu Yu

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引用次数: 0

摘要

在本工作中，采用柱实验研究了四种微塑料(MPs)在一系列离子强度(IS)条件下的传输。在0.1 mM IS下，PMMA MPs的迁移率最高，PET MPs的迁移率最低。随着IS的增大，各种MPs在多孔介质中的输运通常减小到最小。PMMA MPs和PET MPs的输运降低效率低于PVC MPs和PP MPs。发现水化学条件和基本性质对MPs在多孔介质中的输运有共同影响。DLVO结果很好地描述了MPs在沙面上的沉积，并揭示了MPs的输运行为。单点动力学沉积模型成功地拟合了观测到的突破曲线。本研究结果阐明了多磺酸盐在多孔介质中运移的关键控制因素，有助于多磺酸盐环境风险的预测和评估。

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Transport of polypropylene, polyvinyl chloride, polyethylene terephthalate and polymethyl methacrylate microplastics in porous media under gradient ionic strength

In this work, column experiments were applied to investigate the transport of four kinds of microplastics (MPs) under a series of ionic strength (IS) conditions. Under 0.1 mM IS, PMMA MPs showed the highest mobility, as well as the PET MPs showed the lowest mobility. With the IS increased, the transport of all kinds of MPs in porous media was generally reduced to the minimum. The transport reducing efficiency of PMMA MPs and PET MPs was lower than that of the PVC MPs and PP MPs. It was found that both the hydro-chemical conditions and basic properties showed combined effect on MPs transport in porous media. The DLVO results were well used to describe the deposition of MPs onto sand surface and excavate the transport behaviors of MPs. The one-site kinetic deposition model was successfully conducted to fit the observed breakthrough curves. Findings from this study elucidated the key factors controlling the MPs transport in porous media, contributing to the prediction and assessment of the environmental risks of MPs.

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来源期刊

Environmental Pollutants and Bioavailability Chemical Engineering-Chemical Health and Safety

CiteScore

4.30

自引率

3.00%

发文量

审稿时长

13 weeks

期刊介绍： Environmental Pollutants & Bioavailability is a peer-reviewed open access forum for insights on the chemical aspects of pollutants in the environment and biota, and their impacts on the uptake of the substances by living organisms. Topics include the occurrence, distribution, transport, transformation, transfer, fate, and effects of environmental pollutants, as well as their impact on living organisms. Substances of interests include heavy metals, persistent organic pollutants, and emerging contaminants, such as engineered nanomaterials, as well as pharmaceuticals and personal-care products as pollutants.