Index Catalog // ScholarsArchive@OSU

Protection of Nitrosomonas europaea from Silver Nanoparticle-Induced Inhibition through a Two-Step, Magnesium-Facilitated Mechanism

Creator:: Anderson, Joseph W.
Abstract:: The inhibitory effects of (Ag⁺) and silver nanoparticles (Ag NP) 3-5 nm in diameter (stabilized with polyvinylpyrrolidone (PVP)) and 20 nm (stabilized with citrate) on nitrification rates of the model ammonia-oxidizing bacteria (AOB) Nitrosomonas europaea were investigated. Experimental solutions contained HEPES buffer and ammonia (NH₃) in the presence and absence...
Resource Type:: Honors College Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Joseph W

Encapsulation of Rhodococcus rhodochrous ATCC 21198 in gellan gum at high densities and with a slow-release substrate for the in-situ bioremediation of contaminant mixtures from groundwater

Creator:: Williams, Gillian R.
Abstract:: As access to potable water grows scarce, there is an increasing reliance on alternative drinking water sources, namely groundwater (WHO, 2018). Chlorinated solvents, such as 1,1,1-trichloroethane (TCA) and 1,2-cis-Dichloroethene (cisDCE) are some of the most ubiquitous groundwater contaminants spread throughout the US. 1,4-dioxane (1,4D) was used primarily in the late...
Resource Type:: Honors College Thesis
Full Text:: densities of isobutane-grown R. rhodochrous of COC mixtures. In addition, the efficacy of co-encapsulating

Electron donor and chlorinated ethene effects on activity and community composition in anaerobic reductively dechlorinating consortia

Creator:: Sabalowsky, Andrew R.
Abstract:: This research focused on anaerobic transformation of trichloroethene (TCE), a groundwater contaminant. The mixed anaerobic Evanite culture (EV) was studied to determine community behavior and composition responses to different electron donors and chloroethene electron acceptors. The potential toxicity from high concentrations of TCE and its daughter product cis-1,2-dichloroethene (cDCE) was...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Andrew R. Sabalowsky for the degree of Doctor of Philosophy in Civil Engineering

The effect of silver ions and nanoparticles on biofilms and planktonic cultures of Nitrosomonas europaea

Creator:: Giska, Jonathan R.
Abstract:: Due to the effective antimicrobial properties of silver nanoparticles they represent a significant proportion of all consumer-‐related nanomaterials. The introduction of silver nanoparticles from these products into domestic and industrial wastewater streams poses potential complications for biological treatment systems. A critical component of biological treatment that is extremely sensitive to...
Resource Type:: Masters Thesis
Full Text:: THE THESIS OF Jonathan R. Giska for the degree of Master of

The Effect of Oxygen and Salinity Conditions on Soluble Metabolic Product Formation by Methylomicrobium buryatense 5GB1

Creator:: Cameron, Marina R.
Abstract:: Methanotrophic bacteria are promising means of producing value-added products as they have the ability to transform methane under atmospheric temperature and pressure. Efforts to develop methanotrophs to produce value-added products are hoped to incentivize a decrease in methane flaring operations. The data collected during this study was used to inform...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Marina R. Cameron for the degree of Master of Science in Environmental

Microcosm studies of bioaugmentation with a butane-utilizing mixed culture : microbial community structure and 1,1-DCE cometabolism

Creator:: Lim, Hee Kyung
Abstract:: The 1,1-dichloroethene (1,1-DCE) cometabolic transformation abilities of indigenous and bioaugmented microorganisms were compared in microcosms constructed with groundwater and aquifer solids from the Moffett Field site, CA. Microbial community structure in the microcosms and possible community shifts due to 1,1-DCE transformation stress was evaluated by terminal restriction fragment length polymorphism...
Resource Type:: Masters Thesis
Full Text:: . Robert W. Collier for serving as Graduate Council Representative on my committee. It was very lucky for

Anaerobic Dechlorination of PCE to Ethene, Modeling, and Characterization of the Factors Affecting the Transformation Rates

Creator:: Albers, Delancy R.
Abstract:: Tetrachlorethene (PCE) and trichloroethene (TCE) were common solvents used in the 1970’s that are now frequently observed groundwater contaminants. One method of remediating these contaminants is in-situ bioremediation that uses a dechlorinating microbial population. The microbial population performs the sequential reductive dechlorination of PCE and TCE to cis-1,2-dichloroethene (c-DCE), vinyl...
Resource Type:: Honors College Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Delancy R. Albers for the

Kinetic analysis of the aerobic degradation of chlorinated ethenes by the mycobacterium ELW-1 and chlorinated ethanes and ethenes by rhodococcus rhodochrous ATCC® 21198™

Creator:: Rich, Stephanie L.
Abstract:: Bioremediation of chlorinated ethenes by the augmentation of contaminated soils with microorganisms is a proposed method of reducing contaminant concentrations in groundwater. To determine the viability of using ELW-1 or R. rhodochrous for groundwater remediation, kinetic analyses of transformation rates must be performed. The focus of this research was to...
Resource Type:: Honors College Thesis
Full Text:: reducing contaminant concentrations in groundwater. To determine the viability of using ELW-1 or R

Co-Encapsulation of Slow Release Substrates and Microbial Cultures in Alginate and Gellan Gum Beads to Promote the Co-metabolic Transformation of 1,4-Dioxane and Chlorinate Aliphatic Hydrocarbons

Creator:: Rasmussen, Mitchell T.
Abstract:: Methods were developed for the co-encapsulation of slow release compounds (SRC) with viable microbial cells in alginate and gellan gum hydrogel beads, for the in-situ aerobic cometabolic treatment of groundwater contaminated with mixtures of 1,4-dioxane and chlorinated aliphatic hydrocarbons, which will be referred to as contaminants of concern (CoC). The...
Resource Type:: Masters Thesis
Full Text:: high mass loadings, >10% (w/w), and co-encapsulated ATCC 21198 was shown to be able to consume SRC

Radon-222 as an in situ partitioning tracer for quantifying nonaqueous phase liquid (NAPL) saturations in the subsurface

Creator:: Davis, Brian M.
Abstract:: This study investigated the use of radon-222 as an in situ partitioning tracer for quantifying nonaqueous phase liquid (NAPL) saturations in the subsurface. Laboratory physical aquifer models (PAMs), field experiments, and numerical simulations were used to investigate radon partitioning in static (no-flow) experiments and in single-well, 'push-pull' tests conducted in...
Resource Type:: Dissertation
Full Text:: equation and numerical simulations provided estimates of the radon retardation factor (R), which was used

ScholarsArchive@OSU

Protection of Nitrosomonas europaea from Silver Nanoparticle-Induced Inhibition through a Two-Step, Magnesium-Facilitated Mechanism

Encapsulation of Rhodococcus rhodochrous ATCC 21198 in gellan gum at high densities and with a slow-release substrate for the in-situ bioremediation of contaminant mixtures from groundwater

Electron donor and chlorinated ethene effects on activity and community composition in anaerobic reductively dechlorinating consortia

The effect of silver ions and nanoparticles on biofilms and planktonic cultures of Nitrosomonas europaea

The Effect of Oxygen and Salinity Conditions on Soluble Metabolic Product Formation by Methylomicrobium buryatense 5GB1

Microcosm studies of bioaugmentation with a butane-utilizing mixed culture : microbial community structure and 1,1-DCE cometabolism

Anaerobic Dechlorination of PCE to Ethene, Modeling, and Characterization of the Factors Affecting the Transformation Rates

Kinetic analysis of the aerobic degradation of chlorinated ethenes by the mycobacterium ELW-1 and chlorinated ethanes and ethenes by rhodococcus rhodochrous ATCC® 21198™

Co-Encapsulation of Slow Release Substrates and Microbial Cultures in Alginate and Gellan Gum Beads to Promote the Co-metabolic Transformation of 1,4-Dioxane and Chlorinate Aliphatic Hydrocarbons

Radon-222 as an in situ partitioning tracer for quantifying nonaqueous phase liquid (NAPL) saturations in the subsurface

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