Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 127 for “"fate and transport"”.
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Microplastics in Urban Environments: Distribution, Fate, and Transport
… This research investigates MPs’ distribution, fate, and transport in urban environments, focusing on stormwater retention (SWR) ponds, bioretention systems (BRS), and saturated porous media. Field studies analyzed MPs in freshwater sediments of SWR ponds across residential, educational, and …
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Fate and Transport of Pathogen Indicators from Pasturelands
… as a leading cause of impairments in rivers and streams in the U.S. Elevated levels of bacteria in streams draining the agricultural watersheds cause concern because they indicate the potential presence of pathogenic organisms. Limited understanding of how bacteria survive in the environment …
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Fate and transport of Asian carp eggs in spawning rivers
… are filter feeders that consume phytoplankton and zooplankton thus competing directly with native species as their diets overlap. Asian carp can lay thousands of eggs and have the potential to spawn up to three times per year. Moreover, there is a growing concern about Asian carp invading the …
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Fate and Transport of E. coli Through Appalachian Karst Systems
… as important water sources in rural Appalachia and are well-connected to surface waters, making them susceptible to anthropogenic contamination, including by fecal indicator bacteria which represent a public health risk. This work designed and implemented a watershed-scale monitoring program for …
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Characterization and Implications of Surface Hydrophobicity in Nanoparticle Fate and Transport
… reactivity, bioaccessibility, bioavailability and toxicity of nanoparticles (NPs) in the environment. Processes such as aggregation, deposition and biouptake are controlled in part by the attachment efficiency, α, between particles and the surfaces they encounter. One premise of this research …
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The Environmental Fate and transport of Trenbolone Acetate Metabolites in Agro-Ecosystems
Trenbolone acetate (TBA) is a potent synthetic androgen that is widely used to promote weight gain in beef cattle. A possible consequence of its use is endocrine disruption in aquatic vertebrates, which could occur if trace concentrations (>10 ng/L) reach receiving waters. While the ecotoxicity of …
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Modeling fate and transport of Cryptosporidium parvum and rotavirus in overland flow
… microbial contaminants that can cause infection and diarrhea in many mammalian hosts, including humans. About 403,000 of an estimated 1.61 million residents in the Milwaukee area became ill with the stomach cramps, fever, diarrhea and dehydration caused by the outbreak of C. parvum in 1993. It …
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Improving microbial fate and transport modeling to support TMDL development in an urban watershed
… restoration efforts. Due to limited understanding of microbial fate and transport, predictions of FIB concentrations are associated with considerable uncertainty relative to other water-quality contaminants. By focusing on a data-rich instrumented urban watershed, this study aims to improve …
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The fate and transport of light petroleum hydrocarbons in the Lower Mississippi River Delta
Important processes governing the fate and transport of light petroleum hydrocarbons in the Lower Mississippi River and other river delta systems are not adequately represented in existing oil spill models. In response, three methods were introduced to include the effects of dynamic annual …
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Utilizing concentrations and isotopes to assess the fate and transport of redox-sensitive elements
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
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Modeling Fate and Transport of Nitrogen and Phosphorus in Crop Fields Under Tropical Conditions
… models were developed for temperate conditions and, thus, do not appropriately represent tropical conditions. The objective of this research was to develop or adapt a nonpoint source pollution model to simulate transformations and losses of nitrogen (N) and phosphorus (P) in leachate and runoff …
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Rare Earth Elements as a Tracer to Understand Sediment Fate and Transport in Small Streams
… of water quality impairment in streams, rivers and lakes in the US. However, sediment fate and transport in small streams is poorly understood. Previous attempts to characterize sediment transport often insufficiently represented the physical and chemical sediment properties and lacked spatial …
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Interaction of emerging contaminants at the colloidal and planar interfaces : influence on environmental fate and transport
… in aquatic ecosystems provide a need to understand the role surface chemistry plays in the fate and transport of pollutants. The overarching aim of this thesis has been to investigate adsorption of selected emerging pollutants to colloids and elucidate how these surface interactions influence …
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Geochemical Conditions Affecting Uranium(VI) Fate And Transport In Soil And Groundwater In The Presence Of Phosphate
Soil and groundwater contamination with actinides like uranium is a serious environmental concern. Phosphate addition to uranium-contaminated soil and groundwater can potentially provide long-term in-situ U(VI) immobilization by precipitation of low solubility U(VI)-phosphates. Reactions at the …
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Development of hydrograph-based approach to modeling fate and transport of sediment-borne bacteria in lowland rivers
… for water quality impairments of rivers and streams, particularly organic-rich fine-grained lowland streams. While predicting fecal pollution is generally required in the development of water quality restoration plans like Total Maximum Daily Loads, no single model has been widely …
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Fecal Matters: Fate and transport of traditional fecal indicator bacteria and source-tracking targets in septic drainfields
Between 1970 and 2010 almost one-third of drinking water related waterborne disease outbreaks reported to the US Centers for Disease Control and Prevention were associated with systems dependent on untreated groundwater (i.e., most commonly, household wells). This is unsurprising, given that …
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Fate and Transport of Endocrine Disrupting Compounds during Wastewater Treatment: The Role of Colloidal and Particulate Material
… suggesting that enhanced removal of particulate and colloidal material may improve EDC removal efficiency. Colloidal material was obtained from settled mixed liquor suspended solids (MLSS) collected from a pilot MBR and a full-scale activated sludge process that included anoxic and aerobic zones. …
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