Index Catalog // ScholarsArchive@OSU

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

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

Effects of silver ions and nanoparticles on suspended cells and biofilms of Nitrosomonas europaea

Creator:: Barker, Leila Kelly
Abstract:: Silver nanoparticles are increasingly being incorporated into consumer products due to their broad-spectrum antimicrobial properties. The resulting influx of silver nanoparticles into wastewater may pose a threat to bacteria involved in biological wastewater treatment. Ammonia-oxidizing bacteria, which convert ammonia to nitrite in the first step of nitrification, are highly sensitive...
Resource Type:: Masters Thesis
Full Text:: Jonathan Giska for introducing me to this project. Many thanks to Dr. Lewis Semprini and Dr. Tyler

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

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

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

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

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:: , Ashley, and Tyler, for all of the visits and support. To Jasper and Sweet Pea, my emotional support

Addressing Persistent Challenges in Nanotoxicology Exposures : Techniques for in situ Characterization

Creator:: Crandon, Lauren E.
Abstract:: Nanoparticles (NPs), defined by their size (1-100 nm), are increasingly incorporated into commercial and industrial products due to their high surface area and unique properties. They can be designed for specific applications by manipulating composition, size, shape, and surface functionalization. As NP production and complexity increases, there is a need...
Resource Type:: Dissertation
Full Text:: dissertation possible. Thank you so much to my committee members Dr. Jeffrey Nason, Dr. Tyler Radniecki, Dr

ScholarsArchive@OSU

Modeling and Validation of Denitrification Bioreactors for Agricultural Tile Drainage

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

Effects of silver ions and nanoparticles on suspended cells and biofilms of Nitrosomonas europaea

Fundamental Investigations of Electrocatalysis: Mechanistic Implications of Catalyst Electronic Structure

Inhibition of Organohalide-Respiring Bacteria by Carbon Tetrachloride and Chloroform

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

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

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

Addressing Persistent Challenges in Nanotoxicology Exposures : Techniques for in situ Characterization

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