Index Catalog // ScholarsArchive@OSU

Stable isotope probing of the ovine rumen for RDX degrading microorganisms

Creator:: Mitchell, Edward A.
Abstract:: The anaerobic and highly reductive conditions found in the ovine rumen are considered favorable for the degradation of the nitroaromatic explosives such as hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX). In this study, we used stable-isotope-probing to determine the bacteria responsible for the degradation of RDX in the rumen. Results indicate 10 μg mL⁻¹ (45...
Resource Type:: Masters Thesis
Full Text:: considered favorable for the degradation of the nitroaromatic explosives such as hexahydro-1,3,5-trinitro

Synthesis, characterization, and analysis of nitroaromatic compounds

Creator:: McIntosh, Melissa Luana
Abstract:: Nitroaromatic compounds have important chemical applications and can be found in nature as pollution sources. Synthetic nitroaromatic compounds have been used in a variety of materials including explosives, pharmaceuticals, dyes, plastics, and pesticides. These compounds can find their way into the environment through normal or improper disposal methods. Poly-aromatic compounds...
Resource Type:: Masters Thesis
Full Text:: , Characterization, and Analysis of Nitroaromatic Compounds Abstract approved

Polarization spectroscopy and photodissociation studies of nitroaromatic compounds in the gas phase

Creator:: Abbott, James E.
Abstract:: The central purpose of this dissertation was to explore and expand the use of an uniform electric field for orientation and for subsequent spectroscopic investigation of asymmetric polar molecules in the gas phase. The systems of study were nitrobenzene (NB) and the nitrotoluene (NT) isomers. We were able to quantitatively...
Resource Type:: Dissertation
Full Text:: November 3, 2006. Title: Polarization Spectroscopy and Photodissociation Studies of Nitroaromatic

Effects of substrate interactions, toxicity, and bacterial response during cometabolism of chlorinted solvents by nitrifying bacteria

Creator:: Ely, Roger L.
Abstract:: Cometabolic biodegradation processes, important for bioremediation of hazardous waste sites, are not well understood and have not been modeled thoroughly. Toxic effects and bacterial responses to toxicity may change intracellular enzyme levels, rendering traditional enzyme kinetics models inappropriate. This document presents a novel cometabolic enzyme kinetics model that incorporates enzyme...
Resource Type:: Dissertation
Full Text:: Cometabolic biodegradation processes, important for bioremediation of hazardous waste sites, are not well

Pentacholorophenol reductive dechlorination and the significance of temperature : development of an interceptor trench technology

Creator:: Cole, Jason David
Resource Type:: Masters Thesis
Full Text:: (PCP) biodegradation at varying temperatures and low substrate concentrations. In addition, related

Kinetic and modeling investigations of the anaerobic reductive dechlorination of chlorinated ethylenes using single and binary mixed cultures and silicon-based organic compounds as slow-release substrates

Creator:: Yu, Seungho
Abstract:: This study investigated complete reductive dechlorination of chlorinated aliphatic hydrocarbons (CAHs) over a broad range of concentrations. Tetrabutoxysilane (TBOS), as a slow-release anaerobic substrate, was studied for enhanced reductive dechlorination of tetrachioroethylene (PCE) present as a dense non-aqueous liquid (DNAPL). Four different site-mixed cultures were used in the study: Site-300...
Resource Type:: Dissertation
Full Text:: and extent of biodegradation (Fairlee et al., 1997; Rogers et al., 2000). The studies revealed that

A model for the prediction of biologically mediated reductive dechlorination pathways

Creator:: Cozza, Cynthia L.
Abstract:: The environment has been exposed to a number of hazardous chlorinated organic compounds. These compounds may be anaerobically biotransformed by sequential reductive dechlorination reactions in which the chlorine atoms are replaced with hydrogen atoms. Because reductive dechlorination processes may occur very slowly in the environment and chlorine position affects the...
Resource Type:: Masters Thesis
Full Text:: very slowly in the environment and chlorine position affects the fate and toxicity of the compound in

Analysis of Organochlorine Pesticides (OCPs) in Gray Whale Scat as an Alternative Method of Toxicant Quantification in Cetaceans

Creator:: Kutnerian, Amy M.
Abstract:: A method was developed to quantify organochlorine pesticides in whale scat. This method would ideally replace analysis of pesticides in blood and tissue samples, which are difficult to acquire. Scat samples were collected from one stranded gray whale and three live whales. The samples were extracted with pressurized liquid extraction,...
Resource Type:: Honors College Thesis
Full Text:: concentration of 500 pg/µL per compound. The samples were run through the extraction and clean-up steps

Biodegradation of chlorinated methanes using a methylotrophic/anaerobic biofilm reactor

Creator:: Celeste, Stephen J.
Abstract:: Chlorinated low molecular weight solvents have been discovered in a number of the nation's groundwater supplies. Remediation of these aquifers will require some form of treatment. Presently, the dominant treatment method is air stripping which results in transfer of the solvent from the aqueous phase into the atmosphere. Biodegradation is...
Resource Type:: Masters Thesis
Full Text:: Biodegradation of chlorinated methanes using a

Effect of plant surface area on organic carbon removal in wetlands

Creator:: Kuehn, Elaine Jinx
Abstract:: This study investigated the effect of plant surface area (plant density) on the efficiency of organic carbon removal in a bench-scale constructed wetland. Constructed wetlands are commonly assumed to be biofilm reactors in which organic carbon removal occurs primarily through sedimentation and aerobic degradation by attached microbial biofilms. In conventional...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Stable isotope probing of the ovine rumen for RDX degrading microorganisms

Synthesis, characterization, and analysis of nitroaromatic compounds

Polarization spectroscopy and photodissociation studies of nitroaromatic compounds in the gas phase

Effects of substrate interactions, toxicity, and bacterial response during cometabolism of chlorinted solvents by nitrifying bacteria

Pentacholorophenol reductive dechlorination and the significance of temperature : development of an interceptor trench technology

Kinetic and modeling investigations of the anaerobic reductive dechlorination of chlorinated ethylenes using single and binary mixed cultures and silicon-based organic compounds as slow-release substrates

A model for the prediction of biologically mediated reductive dechlorination pathways

Analysis of Organochlorine Pesticides (OCPs) in Gray Whale Scat as an Alternative Method of Toxicant Quantification in Cetaceans

Biodegradation of chlorinated methanes using a methylotrophic/anaerobic biofilm reactor

Effect of plant surface area on organic carbon removal in wetlands

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