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

Interactions between natural organic matter and gold nanoparticles stabilized with different organic capping agents

Creator:: Stankus, Dylan Paul
Abstract:: The adsorption of natural organic matter (NOM) to the surfaces of natural colloids and engineered nanoparticles is known to strongly influence, and in some cases control, their surface properties and aggregation behavior. As a result, the understanding of nanoparticle fate, transport and toxicity in natural systems must include a fundamental...
Resource Type:: Masters Thesis
Full Text:: : ________________________________________________________________________ Jeffrey A. Nason The adsorption of natural organic matter (NOM) to the surfaces of

The effects of engineered coatings and natural organic matter on nanoparticle aggregation

Creator:: McDowell, Shannon A.
Abstract:: In order to better predict the aggregation state of nanomaterials, the factors that influence aggregation must be understood. The combined effects of natural and engineered coatings have been shown to factor into nanoparticle aggregation behavior in preliminary research. In this study, aggregation behaviors of gold nanoparticles with two different engineered...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Jeffrey A. Nason In order to better predict the aggregation state of

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

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

The effect of coagulation conditions on floc size distribution and morphology : implications for downstream treatment processes

Creator:: Maguire, Ian R.
Abstract:: Coagulation and flocculation are commonly used in drinking water treatment as a means of destabilizing and aggregating particles and promoting adsorption of dissolved organic carbon (DOC). In practice, jar tests are used to determine optimal conditions for the removal of turbidity and DOC. However, beyond the inferences that can be...
Resource Type:: Masters Thesis
Full Text:: : Implications for Downstream Treatment Processes. Abstract approved: Jeffrey A. Nason

Design of a heat exchanger network to challenge controller design methods

Creator:: Pashak, Jeffrey J.
Abstract:: A simple heat exchanger network has been studied as an example of a dynamically interactive process. The process is relatively simple, requiring only temperature measurements and flow rate manipulations. Equations are presented for the design of a physical process having a specified steady-state Relative Gain Array and specified dynamic characteristics....
Resource Type:: Masters Thesis
Full Text:: design methods AN ABSTRACT OF THE THESIS OF Jeffrey J. Pashak for the degree of Master of Science in

Experimental approach for the determination of lignin modification by manganese peroxidase

Creator:: Goby, Jeffrey D.
Abstract:: Degradation of lignin to simpler compounds is desirable for removing residual lignin during paper manufacture and accessing biomass carbohydrates for biofuel production, among other purposes. Lignin transformation using enzymes found in white rot fungi, some of nature's most efficient lignin-degrading organisms, offers a more environmentally benign, selective, and possibly less...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Jeffrey D. Goby

Thermodynamics of Laser-Assisted Solution Combustion Synthesis of Yttrium Oxide

Creator:: Dhas, Jeffrey A.
Abstract:: To assess the conversion and embedment of yttrium nitrate to yttrium oxide using selective laser melting, a thermodynamic approach for laser power and scan speed predictions on surface temperature, recoil pressure, and resulting track morphology window are employed. Inkjet printing is used to deposit the liquid film of yttrium nitrate...
Resource Type:: Honors College Thesis
Full Text:: Thermodynamics of Laser-Assisted Solution Combustion Synthesis of Yttrium Oxide By Jeffrey Arul Dhas

Evaluating the rates of nitrate removal for a nitrate containing, low organic carbon wastewater interacting with carbon-containing solid substrates

Creator:: Hart, Jeffrey L.
Abstract:: The primary objective of this study was to evaluate the rates of nitrate removal for a nitrate containing, low organic carbon wastewater interacting with four different carbon-containing solid substrates (alder woodchips, corn silage, manure and woodchip biochar). Batch systems were tested for nitrate removal, and systems with a combination of...
Resource Type:: Masters Thesis
Full Text:: Jeffrey L. Hart for the degree of Master of Science in Chemical Engineering presented on March 16, 2012

ScholarsArchive@OSU

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

Interactions between natural organic matter and gold nanoparticles stabilized with different organic capping agents

The effects of engineered coatings and natural organic matter on nanoparticle aggregation

Statistical analysis and speciation modeling of copper in Oregon highway runoff

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

The effect of coagulation conditions on floc size distribution and morphology : implications for downstream treatment processes

Design of a heat exchanger network to challenge controller design methods

Experimental approach for the determination of lignin modification by manganese peroxidase

Thermodynamics of Laser-Assisted Solution Combustion Synthesis of Yttrium Oxide

Evaluating the rates of nitrate removal for a nitrate containing, low organic carbon wastewater interacting with carbon-containing solid substrates

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