Interactions between water flow and microplastics in silt loam and loamy sand

Xing, Xuguang; Yu, Miao; Xia, Tianjiao; Ma, Li

doi:10.1002/saj2.20337

Cited by 20 publications

(4 citation statements)

References 34 publications

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“…The addition of MPs can alter soil permeability by occupying soil pores. This led to an increase in the proportion of large pores, reducing the specific surface area and overall porosity of the soil (Xing et al, 2021; Zhang et al, 2019). Consequently, soil water movement was inhibited and the K s decreased from N0 to N1.…”

Section: Discussionmentioning

confidence: 99%

Dry‐wet alternation and microplastics particle size effects on and contributions to soil water and soil pore properties

Xing,

Jing,

Zhao

et al. 2024

European J Soil Science

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Agricultural soils always contain microplastics (MPs) residues and farmlands often undergo continuous drying‐wetting alternations. However, little is known about how the existing MPs and MPs particle size affect soil physical properties under drying‐wetting cycles; also their combined influences are not well understood. Hence, we completed measurements of hydraulic parameters and calculations of water characteristics and pore distributions in soil‐MPs mixtures subjecting to five drying‐wetting cycles and four MPs particle sizes. Quantitative findings indicated that both MPs and drying‐wetting cycles reduced saturated conductivity, which firstly decreased and then increased with the increase of MPs particle size and the progress of drying‐wetting cycles. The drying‐wetting cycles increased field capacity (FC) and permanent wilting coefficient (PWC), but reduced gravity water (GW) and available water content (AWC). Oppositely, the MPs reduced FC and PWC but increased GW and AWC; furthermore, the average FC and PWC overall firstly decreased and then increased with the increase in MPs particle size; however, the average GW and AWC firstly increased and then stabilized. The MPs reduced total porosity and the drying‐wetting cycle also reduced it in soil‐MPs mixtures, which whereas increased as the drying‐wetting cycles proceeded. Factors contribution analyses indicated that the drying‐wetting cycle made greater contributions than MPs particle size to the variation of soil physical properties, and their combined effects mainly made great contributions to the variation of soil hydraulic parameters. Our findings provide evidence for MPs influence on soil physical properties, which deserves attention with regard to the developments of sustainable agricultural practical managements in plastic‐polluted soil‐crop systems.

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Section: Discussionmentioning

confidence: 99%

Dry‐wet alternation and microplastics particle size effects on and contributions to soil water and soil pore properties

Xing,

Jing,

Zhao

et al. 2024

European J Soil Science

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“…Overall, coarser texture promotes MP transport; this was found in terms of mass recovery rate (Dong et al, 2022;Wu et al, 2020), transport rate (Gui et al, 2022), number of MPs traversing the sample (Xing et al, 2021), and loss ratio (Rehm et al, 2021). For a given MP size, larger soil particles, which in turn imply larger pore sizes, enhance the MPs mobility, in terms of mass recovery rate (Dong et al, 2022;Hou et al, 2020), maximum depth (Gao et al, 2021;Ranjan et al, 2023), and MP outlet concentration .…”

Section: Soil Texture Grain and Pore Sizementioning

confidence: 98%

“…In addition to the obvious effect of larger soil pores in coarse-textured soils (Dong et al, 2022;Xing et al, 2021), larger soil particles have lower specific surface area, and hence adsorb and retain MPs less than finer soils. Soil texture also affects soil Zeta potential.…”

Section: Soil Texture Grain and Pore Sizementioning

confidence: 99%

Microplastics transport in soils: A critical review

Li,

Bogush,

Wiel

et al. 2024

Preprint

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Microplastics (MPs) in terrestrial environments are an emerging contaminant of huge concern to ecosystems and human health. However, our understanding of the MPs fate, particularly their transport mechanisms, remains elusive. This knowledge gap arises from the multiplicity of coupled physical, chemical and biological processes and parameters affecting MPs transport, together with scarcity of systematic studies that aim to isolate their individual effects. In this paper, we provide a critical review of the state-of-the-art in our understanding of MPs transport, highlight knowledge gaps, and suggest future research to bridge them. We classify the governing factors into four main categories: (i) MPs properties; (ii) soil properties; (iii) hydrological conditions; and (iv) biological activity. Our analysis highlights the intricacy of MPs transport, showing that seemingly non-monotonic trends and even complete lack of correlation between some parameters and MPs transport could be explained by the interference (co-effects) with other parameters and processes.

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“…Groundwater replenishment contributes to other benefits, including recharging the aquifer to minimize the reduction in groundwater levels from abstraction for consumption, sustaining the biodiversity, and ensuring the longevity of the supply source. Mindful that microplastics have the potential to impact on the geology, hydrology, and hydrochemistry of the aquifer, ,, more research in this field would be valuable.…”

Section: Strategies To Reduce Risk Mitigate Effects and Build Resiliencementioning

confidence: 99%

Strategies to Reduce Risk and Mitigate Impacts of Disaster: Increasing Water Quality Resilience from Microplastics in the Water Supply System

Senathirajah,

Palanisami

2023

ACS EST Water

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Microplastics contaminating the water supply system qualifies as a disaster. This has major far-reaching implications, posing significant threats to economic growth and human livelihoods, as well as environmental and human health and well-being. Thus, we need to reduce the risk and mitigate against the effects of microplastics to build resilience and ensure continuity and efficiency of water supply system functions. To date, microplastics in the water supply cycle have not been considered in the context of disaster management. Hence, we provide an understanding of the disaster risk that microplastics pose using a conceptual mathematical framework. Additionally, we enhance understanding of the resilience of the social and physical infrastructure by highlighting hazards that people and infrastructure in the community face. Insights of the social, economic, and other human factors that make them vulnerable highlights capacities required to reduce risk and mitigate impacts. By evaluating the social and physical infrastructure resilience to microplastics in the water supply system and recommending multidisciplinary strategies to build resilience over time, we aim to catalyze action to address the problem. This will also contribute toward achieving targets of the Sendai Framework for Disaster Risk Reduction 2015–2030 and UN Sustainable Development Goals.

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Interactions between water flow and microplastics in silt loam and loamy sand

Cited by 20 publications

References 34 publications

Dry‐wet alternation and microplastics particle size effects on and contributions to soil water and soil pore properties

Dry‐wet alternation and microplastics particle size effects on and contributions to soil water and soil pore properties

Microplastics transport in soils: A critical review

Strategies to Reduce Risk and Mitigate Impacts of Disaster: Increasing Water Quality Resilience from Microplastics in the Water Supply System

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