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Improved Understanding of Microplastic Transport in Agricultural Farms and Its Environmental Impact /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Improved Understanding of Microplastic Transport in Agricultural Farms and Its Environmental Impact /Alireza Bakhshaee.
Author:	Bakhshaee, Alireza,
Description:	1 electronic resource (166 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
Notes:	Advisors: Jazaei, Farhad Committee members: Waldron, Brian; Camp, Charles; Arellano, David; Bell, Kati.
Contained By:	Dissertations Abstracts International87-05B.
Subject:	Environmental engineering.
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=32279719
ISBN:	9798263312398

Improved Understanding of Microplastic Transport in Agricultural Farms and Its Environmental Impact /
Bakhshaee, Alireza,

Improved Understanding of Microplastic Transport in Agricultural Farms and Its Environmental Impact /Alireza Bakhshaee. - 1 electronic resource (166 pages)

Source: Dissertations Abstracts International, Volume: 87-05, Section: B.

The global escalation of plastic production has led to widespread microplastic (MP) contamination across terrestrial and aquatic environments, posing a growing environmental challenge. MPs, defined as plastic particles smaller than 5 mm, originate from the degradation of larger plastics as well as from direct inputs such as synthetic fibers, biosolids, and agricultural mulching films. Despite their ubiquity, limited knowledge exists regarding their behavior in soils and their influence on soil-water-plant interactions. This dissertation addresses this gap through an integrated series of controlled laboratory experiments and modeling analyses that examine how MPs modify soil-water-plant dynamics, how they are transported through infiltration and runoff under simulated rainfall events, and how advanced analytical tools can be used for their precise detection, identification, and quantification.The results demonstrate that MPs fundamentally alter soil hydraulic properties by modifying pore connectivity, surface hydrophobicity, and water retention behavior. These changes affect soil moisture storage, infiltration, and evapotranspiration patterns, potentially influencing plant growth, root development, and irrigation efficiency. Beyond the root zone, altered infiltration and runoff dynamics accelerate surface erosion, promote lateral and vertical particle migration, and enhance the likelihood of MP transfer to groundwater and downstream water bodies. Over time, such pathways enable the progressive delivery of terrestrial MP to rivers, estuaries, and ultimately marine ecosystems, intensifying global plastic circulation and contamination.This research highlights that even trace MP concentrations-at environmentally relevant levels-can lead to cumulative hydrological, agronomic, and ecological consequences. By integrating hydrological modeling, soil-water retention analyses, and particle-scale characterization using micro-FTIR spectroscopy, this dissertation establishes a mechanistic framework for understanding MP-soil interactions under realistic environmental conditions. The findings provide critical insights for predicting the fate and transport of MPs within agricultural landscapes, advancing sustainable soil and water resource management, and supporting the development of mitigation strategies that address the terrestrial origins of plastic pollution.

English

ISBN: 9798263312398Subjects--Topical Terms:

188694
Environmental engineering.
Subjects--Index Terms:

Microplastic morphology

Improved Understanding of Microplastic Transport in Agricultural Farms and Its Environmental Impact /
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245 1 0 $a Improved Understanding of Microplastic Transport in Agricultural Farms and Its Environmental Impact / $c Alireza Bakhshaee.
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520 $a The global escalation of plastic production has led to widespread microplastic (MP) contamination across terrestrial and aquatic environments, posing a growing environmental challenge. MPs, defined as plastic particles smaller than 5 mm, originate from the degradation of larger plastics as well as from direct inputs such as synthetic fibers, biosolids, and agricultural mulching films. Despite their ubiquity, limited knowledge exists regarding their behavior in soils and their influence on soil-water-plant interactions. This dissertation addresses this gap through an integrated series of controlled laboratory experiments and modeling analyses that examine how MPs modify soil-water-plant dynamics, how they are transported through infiltration and runoff under simulated rainfall events, and how advanced analytical tools can be used for their precise detection, identification, and quantification.The results demonstrate that MPs fundamentally alter soil hydraulic properties by modifying pore connectivity, surface hydrophobicity, and water retention behavior. These changes affect soil moisture storage, infiltration, and evapotranspiration patterns, potentially influencing plant growth, root development, and irrigation efficiency. Beyond the root zone, altered infiltration and runoff dynamics accelerate surface erosion, promote lateral and vertical particle migration, and enhance the likelihood of MP transfer to groundwater and downstream water bodies. Over time, such pathways enable the progressive delivery of terrestrial MP to rivers, estuaries, and ultimately marine ecosystems, intensifying global plastic circulation and contamination.This research highlights that even trace MP concentrations-at environmentally relevant levels-can lead to cumulative hydrological, agronomic, and ecological consequences. By integrating hydrological modeling, soil-water retention analyses, and particle-scale characterization using micro-FTIR spectroscopy, this dissertation establishes a mechanistic framework for understanding MP-soil interactions under realistic environmental conditions. The findings provide critical insights for predicting the fate and transport of MPs within agricultural landscapes, advancing sustainable soil and water resource management, and supporting the development of mitigation strategies that address the terrestrial origins of plastic pollution.
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650 4 $a Environmental engineering. $3 188694
650 4 $a Water resources management. $3 237899
650 4 $a Hydrologic sciences. $3 886603
650 4 $a Soil sciences. $3 990148
653 $a Microplastic morphology
653 $a Plastic contamination
653 $a Rainfall-runoff
653 $a Soil Hydraulic properties
653 $a Soil Hydrology
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690 $a 0595
690 $a 0388
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710 2 $a The University of Memphis. $b Civil Engineering. $e degree granting institution. $3 1010453
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773 0 $t Dissertations Abstracts International $g 87-05B.
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791 $a Ph.D.
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