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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:: will become part of the permanent collection of Oregon State University, University Honors College

Correlation of NE 1545 expression and cell size in Nitrosomonas europaea exposed to a suite of aromatic hydrocarbons

Creator:: Gilroy, Caslin Anne
Abstract:: Ammonia oxidizing bacteria, including Nitrosomonas europaea, are inhibited by aromatic hydrocarbons which can be found in wastewater treatment plants. In recent studies, changes have been observed in N. europaea cell size upon exposure to benzene, but not toluene. Additionally, NE 1545, a gene proposed to be involved in fatty acid...
Resource Type:: Honors College Thesis
Full Text:: hydrocarbons by Caslin Anne Gilroy A PROJECT submitted to Oregon State University

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:: submitted to Oregon State University Honors College in partial fulfillment of 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:: Oregon State University University Honors College in partial fulfillment of the

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:: submitted to Oregon State University Honors College in partial fulfillment of the

Transient Electron Donor Concentration Experiments for the Determination of Dehalogenation Rate and Kinetic Parameter Shifts in an Anaerobic Microbial Culture

Creator:: Green, Jennifer K.
Abstract:: Trichloroethene (TCE) is a common groundwater contaminant. Bioremediation, or the enhancement of natural microbial processes for the transformation of toxic compounds in soil and groundwater, is an effective solution to this widespread problem. The organisms that transform TCE in the subsurface are sensitive to environmental conditions, especially to the presence...
Resource Type:: Honors College Thesis
Full Text:: Oregon State University University Honors College in partial fulfillment of the

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:: to Oregon State University University Honors College in partial fulfillment of the

Influence of Corexit 9500A and Alaska North Slope Crude oil toxicity to the ammonia-oxidizing bacteria, Nitrosomonas europaea, and the ammonia-oxidizing archaea, Nitrosopumilus maritimus

Creator:: Schneider, Margaret C.
Abstract:: The inhibitory effects of Corexit 9500A, Alaska North Slope Crude oil (ANSC), and mixtures of the two on the ammonia-oxidizing bacteria, Nitrosomonas europaea, and the ammonia-oxidizing archaea, Nitrosopumilus maritimus, were investigated. Corexit 9500A was found to be minimally toxic to both microorganisms with concentrations of 2000 and 3000 ppm yielding...
Resource Type:: Honors College Thesis
Full Text:: Oregon State University University Honors College in partial fulfillment of the requirements for

Aerobic cometabolism of chloroform by butane and propane grown microorganisms from the Hanford subsurface

Creator:: Kim, Young
Abstract:: Batch microcosm studies were carried out to screen for microorganisms from the subsurface of Hanford DOE site that could cometabolically transform chloroform (CF) under aerobic conditions. The potential need for CF bioremediation at the Hanford site has resulted from the large release of carbon tetrachloride (CT) to the subsurface, of...
Resource Type:: Masters Thesis
Full Text:: THESIS submitted to Oregon State University in partial fulfillment of the requirements for the

Continuous-flow and batch column studies of anaerobic carbon tetrachloride biotransformation on Hanford soil

Creator:: Niemet, Michael Richard
Abstract:: Continuous-flow and batch experiments were conducted with a column reactor system containing Hanford aquifer material in order to evaluate the potential of in-situ bioremediation of carbon tetrachloride (CT) at Hanford. The effectiveness of benzoate and acetate as primary substrates was considered. Nitrate and sulfate were potential electron acceptors. Transport experiments...
Resource Type:: Masters Thesis
Full Text:: Oregon State University in partial fulfillment of the requirements for the degree of Master of

ScholarsArchive@OSU

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

Correlation of NE 1545 expression and cell size in Nitrosomonas europaea exposed to a suite of aromatic hydrocarbons

Anaerobic Dehalogenation of Trichloroethene by Encapsulated Dehalococcoides mccartyi

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

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

Transient Electron Donor Concentration Experiments for the Determination of Dehalogenation Rate and Kinetic Parameter Shifts in an Anaerobic Microbial Culture

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

Influence of Corexit 9500A and Alaska North Slope Crude oil toxicity to the ammonia-oxidizing bacteria, Nitrosomonas europaea, and the ammonia-oxidizing archaea, Nitrosopumilus maritimus

Aerobic cometabolism of chloroform by butane and propane grown microorganisms from the Hanford subsurface

Continuous-flow and batch column studies of anaerobic carbon tetrachloride biotransformation on Hanford soil

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