Index Catalog // ScholarsArchive@OSU

Comparison of Experimentally-determined and Model-estimated Attachment Efficiency for Predicting Nanoparticle Aggregation

Creator:: Kennard, Jasmin J.
Abstract:: The widespread use of engineered nanoparticles (ENPs) in industrial applications and consumer products makes their release to the environment inevitable. Understanding the aggregation behavior of ENPs is crucial to understanding their fate, transport and toxicology in aquatic systems. This study investigated the comparability of experimentally-determined and model-estimated attachment efficiencies for...
Resource Type:: Honors College Thesis
Full Text:: Jeffrey A. Nason The widespread use of engineered nanoparticles (ENPs) in industrial applications

Heteroaggregation between citrate-stabilized gold nanoparticles and hematite colloids : mechanisms and quantification of nanoparticle-colloid interactions

Creator:: Smith, Brian M.
Abstract:: Understanding the aggregation behavior of engineered nanomaterials (ENMs) in aqueous environments is essential to understanding their fate, transport, and toxicity. Because naturally occurring colloids will likely be present at much higher concentrations than ENMs in environmental systems, heteroaggregation and attachment with these natural colloids could significantly influence ENM fate and...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: _____________________________________________________________________ Jeffrey A

Comparison of Aqueous Cu⁺², Pb⁺², and Zn⁺² Adsorption with Pyrolyzed Hazelnut Shells and a Commercially Produced High-Carbon Fly Ash

Creator:: Steigerwald, Jessica Marie
Abstract:: Contamination of stormwater with Cu⁺², Pb⁺², and Zn⁺² has become an important issue with recognition of the neurotoxic effects of these metal ions on aquatic life. Low levels of aqueous Cu⁺² disrupt olfactory functioning in endangered Pacific Northwest salmon, decreasing their ability to avoid predation. One common solution is stormwater...
Resource Type:: Honors College Thesis
Full Text:: . APPROVED: _____________________________________________________________________ Jeffrey A. Nason

Natural Organic Matter Surface Coverage as a Predictor of Heteroaggregation between Nanoparticles and Colloids

Creator:: Oney, Dylan M.
Abstract:: Heteroaggregation of nanoparticles with naturally occurring colloids has been shown to be an important process in nanoparticle fate and transport in the aquatic environment. The advent of a functional assay to measure heteroaggregation attachment efficiencies has opened the door for further mechanistic studies. It is well known that natural organic...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Jeffrey A. Nason Heteroaggregation of nanoparticles with naturally occurring colloids

Evaluation of copper removal from stormwater runoff using compost and Apatite II™

Creator:: Silvertooth, Jason R.
Abstract:: Low concentrations of dissolved copper have proven to be harmful to a number of aquatic organisms, with recent research highlighting detrimental effects to endangered salmonid species. Stormwater runoff can represent a significant source of copper to surface waters, necessitating cost-effective alternatives to current stormwater best management practices (BMPs). This study...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Jeffrey A. Nason Low concentrations of dissolved copper have proven to be harmful to

Eco-corona formation and impact on environmentally relevant micro- and nanoplastics

Creator:: McColley, Campbell J.
Abstract:: Microplastics (MPs) are plastic particles less than 5 mm in diameter. These contaminants are increasingly found in the environment due to increased plastic production, use, and improper disposal. Detecting and measuring these contaminants in the environment has proven difficult, requiring the use of fate and transport models to assess MP...
Resource Type:: Dissertation
Full Text:: Nanoplastics Abstract approved: ______________________________________________________ Jeffrey A

Evaluation of Apatite II™ for removal of copper and zinc from highway stormwater runoff : laboratory and field experiments

Creator:: Provolt, Justin J.
Abstract:: Current best management practices (BMPs) for stormwater treatment are not able to adequately remove heavy metals to levels which do not adversely affect aquatic life. Copper is commonly found in highway stormwater runoff, with the primary source being brake pad wear. Copper is of particular concern due to inhibitory effects...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Jeffrey A. Nason Current best management practices (BMPs) for stormwater treatment are not

Copper Speciation in Wastewater-Impacted Surface Waters

Creator:: Mosbrucker, Ariel M.
Abstract:: This study investigates the relationship between total and ionic copper in samples taken from the Tualatin River and wastewater treatment facilities (WWTFs) that discharge into the Tualatin River. Copper speciation was analyzed by determining conditional stability constants and densities of copper binding ligands on the dissolved organic matter (DOM) in...
Resource Type:: Masters Thesis
Full Text:: Abstract Approved: Jeffrey A. Nason This study investigates the relationship between

The assessment of copper and zinc removal from highway stormwater runoff using Apatite II™

Creator:: Huang, Hsiao-Wen
Abstract:: Copper and zinc are heavy metals commonly present in highway stormwater runoff. Discharge of these metals to surface waters inhabited by sensitive aquatic species including threatened and endangered salmonids has necessitated the need for improved treatment techniques. Although copper is of the greater toxicological concern, zinc is often present at...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Jeffrey A. Nason Copper and zinc are heavy metals commonly present in highway

Statistical analysis and speciation modeling of copper in Oregon highway runoff

Creator:: Bloomquist, Don J.
Abstract:: Low levels of copper have been shown to impair the olfactory system of threatened and endangered (T&E) salmon, decreasing their predator avoidance behavior and likely increasing mortality. However, only dissolved copper (dissCu) present as the cupric ion (Cu2+) and weakly complexed species are truly bioavailable. Previous studies indicate the vast...
Resource Type:: Masters Thesis
Full Text:: Highway Runoff Abstract approved: Jeffrey A. Nason Low levels of copper have been shown to

ScholarsArchive@OSU

Comparison of Experimentally-determined and Model-estimated Attachment Efficiency for Predicting Nanoparticle Aggregation

Heteroaggregation between citrate-stabilized gold nanoparticles and hematite colloids : mechanisms and quantification of nanoparticle-colloid interactions

Comparison of Aqueous Cu⁺², Pb⁺², and Zn⁺² Adsorption with Pyrolyzed Hazelnut Shells and a Commercially Produced High-Carbon Fly Ash

Natural Organic Matter Surface Coverage as a Predictor of Heteroaggregation between Nanoparticles and Colloids

Evaluation of copper removal from stormwater runoff using compost and Apatite II™

Eco-corona formation and impact on environmentally relevant micro- and nanoplastics

Evaluation of Apatite II™ for removal of copper and zinc from highway stormwater runoff : laboratory and field experiments

Copper Speciation in Wastewater-Impacted Surface Waters

The assessment of copper and zinc removal from highway stormwater runoff using Apatite II™

Statistical analysis and speciation modeling of copper in Oregon highway runoff

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