Index Catalog // ScholarsArchive@OSU

Fundamental Investigations of Electrocatalysis: Mechanistic Implications of Catalyst Electronic Structure

Creator:: Carvalho, O. Quinn
Abstract:: Heterogeneous catalysis modulates the rate and selectivity of reaction processes by stabilizing a series of intermediate states on solid surfaces, facilitating the production of many commodity chemicals modern society relies upon. Conventional, thermal catalytic processes—conducted at elevated temperatures and pressures—source thermal, mechanical, and chemical potential energy from carbon-hydrogen bonds— combustion...
Resource Type:: Dissertation
Full Text:: Figure 3.1. (a) CV collected at 10 mV/s in quiescent 0.1 M NaxH3-xPO4 in the absence (dashed black trace

Prevalence and Fate of Antibiotic-resistant E. coli in Municipal Wastewater Treatment Plants across Oregon

Creator:: Khorshidi Zadeh, Marjan
Abstract:: Wastewater treatment plants are considered one of the main sources and reservoirs of antimicrobial resistance (AMR). This study investigated the prevalence of 8 different phenotypes of AMR, multi-drug resistant (MDR), and extended-spectrum beta-lactamases (ESBL) producing E. coli in 17 wastewater treatment plants across Oregon in winter and summer of 2019...
Resource Type:: Masters Thesis
Full Text:: project. Special thank my committee members, Drs. Joy Waite-Cusic, Tyler Radniecki, and Kile Molly

Modeling and Validation of Denitrification Bioreactors for Agricultural Tile Drainage

Creator:: Morkoc, Adnan
Abstract:: Agricultural tile drainage is one of the major causes of increasing nitrate (NO3-) concentrations in surface water bodies thanks to the usage of nitrogen fertilizers and manure. Denitrifying bioreactors are constructed at the edge of agricultural lands in order to remove NO3- from drainage water through labile carbon substrates intended...
Resource Type:: Masters Thesis
Full Text:: troubleshooting support. Thank you to my committee members, Dr. Todd Jarvis and Dr. Tyler Radniecki for their

Anaerobic Dehalogenation of Trichloroethene by Encapsulated Dehalococcoides mccartyi

Creator:: Lukens, Eileen P.
Abstract:: Chlorinated aliphatic hydrocarbons (CAHs) like trichloroethene (TCE) were mostly used to replace drying cleaning fluids which contained hydrocarbons like benzene, and were highly flammable. Through improper disposal, storage, and spills, TCE and its downstream products, like cis-dichloroethene (cDCE) and vinyl chloride (VC), leached into groundwater and threaten human and environmental...
Resource Type:: Honors College Thesis
Full Text:: Engineering ______________________________________________________________________ Tyler Radniecki

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:: _____________________________________________________________________ Tyler S. Radniecki, Committee Member, representing Environmental Engineering

Inhibition of Organohalide-Respiring Bacteria by Carbon Tetrachloride and Chloroform

Creator:: Ehret, Emma L.
Abstract:: Despite decades of cleanup efforts, chlorinated solvents are some of the most common groundwater and subsurface contaminants of the industrialized world. These compounds include chlorinated ethenes (CEs) such as trichloroethene (TCE) and chlorinated methanes (CMs) such as carbon tetrachloride (CT). Dehalococcoides mccartyi belongs to a class of microorganisms called organohalide-respiring...
Resource Type:: Masters Thesis
Full Text:: . Next, a big thank you to my committee members: Drs. Tyler Radniecki, Mark Dolan, and Jack Istok and

Hydrophobicity, Anion Exchange, and Phytoaccumulation of Per- and Polyfluoroalkyl Substances (PFAS): Retention and Remediation

Creator:: Parker, Bethany A.
Abstract:: Per- and polyfluoroalkyl substances (PFAS) are a group of contaminants of great concern due to their toxicity and ubiquity in the environment. Remediation efforts historically have focused on granular activated carbon (GAC) because of its low maintenance and relatively low cost. However, GAC is not PFAS selective and is especially...
Resource Type:: Dissertation
Full Text:: , Dr. Staci Simonich, and Dr. Tyler Radniecki provided insight in experiment design and manuscript

Bioretention Establishment Hydrologic Characterization with Drift Correction and Calibration of Fine Water Level Measurements

Creator:: Livingston, Grant
Abstract:: Bioretention is a common form of green stormwater infrastructure that is used to attenuate peak flows from urban stormwater. Previous research shows that the bioretention peak response is not consistent across time or space and that the variables that affect peak hydrology are numerous. One variable that has not been...
Resource Type:: Masters Thesis
Full Text:: other committee members Dr. Yutaka Hagimoto and Dr. Tyler Radniecki for their valuable feedback and

The Preparation and Human Taste Detection of Maltooligosaccharides with Varying Degrees of Polymerization

Creator:: Andrewson, Toren S.
Abstract:: Starch is a significant component of the human diet and the glucose produced through its digestion provides a critical source of energy. When starch enters the mouth, salivary α-amylase hydrolyzes it into maltooligosaccharides (MOS, degree of polymerization [DP] 3-20) and maltopolysaccharides (MPS, DP >20). Previous studies have found that humans...
Resource Type:: Masters Thesis
Full Text:: brainstorming ideas and to Dr. Tyler Radniecki for agreeing to support my journey as a part of my committee

Observations and Modeling of Shear Reduction and Sediment Flux within Vegetated Canopies on Managed Coastal Dunes

Creator:: Dickey, John
Abstract:: Wind flow on vegetated coastal foredunes adapts to the local canopy drag, resulting in spatial gradients in bed shear stresses which contribute to the formation of localized bedforms (e.g., nebkha, shadow dunes). Numerous morphological properties of the plants, including canopy height and density, affect the wind flow dynamics and therefore...
Resource Type:: Masters Thesis
Full Text:: Field Experiment results (red circles). Over the range of densities used in Hesp et al.’s data set our

ScholarsArchive@OSU

Fundamental Investigations of Electrocatalysis: Mechanistic Implications of Catalyst Electronic Structure

Prevalence and Fate of Antibiotic-resistant E. coli in Municipal Wastewater Treatment Plants across Oregon

Modeling and Validation of Denitrification Bioreactors for Agricultural Tile Drainage

Anaerobic Dehalogenation of Trichloroethene by Encapsulated Dehalococcoides mccartyi

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

Inhibition of Organohalide-Respiring Bacteria by Carbon Tetrachloride and Chloroform

Hydrophobicity, Anion Exchange, and Phytoaccumulation of Per- and Polyfluoroalkyl Substances (PFAS): Retention and Remediation

Bioretention Establishment Hydrologic Characterization with Drift Correction and Calibration of Fine Water Level Measurements

The Preparation and Human Taste Detection of Maltooligosaccharides with Varying Degrees of Polymerization

Observations and Modeling of Shear Reduction and Sediment Flux within Vegetated Canopies on Managed Coastal Dunes

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