Index Catalog // ScholarsArchive@OSU

Radon-222 as a tracer for performance assessment of NAPL remediation technologies in the saturated zone : an experimental investigation

Creator:: Gottipati, Sarayu
Abstract:: Persistence of Non aqueous phase liquids (NAPLs) in the subsurface at residual saturations eventually contributes to undesirable groundwater contamination. Proper characterization of subsurface NAPL, its location, composition and distribution, is essential for the chosen remediation technology to be effective. It is also desirable to assess the performance of remedial actions...
Resource Type:: Masters Thesis
Full Text:: Sarayu Gottipati for the degree of Master of Science in Civil Engineering presented on January 16, 1996

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:: , respectively, that are primarily used as heat-transfer fluids, hydraulic fluids, and lubricants. No report is

Factors controlling halogenated and nonhalogenated alkene growth substrate range of vinyl chloride-utilizing bacteria

Creator:: Taylor, Anne Elizabeth
Abstract:: This thesis explores the factors limiting the alkene substrate range of the vinyl chloride (VC)-utilizing bacteria, and describes a method for measuring VC transformation in situ. Vinyl fluoride (VF) was evaluated as a surrogate for monitoring aerobic VC-transformation utilizing three isolates, Mycobacterium EE13a, Mycobacterium JS60 and Nocardioides JS614. JS614 grew...
Resource Type:: Dissertation
Full Text:: , and vinyl bromide (VB), whereas propene oxide (PrO) and butene oxide had no effect. Despite EtO and

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:: electron acceptors (Ritalahti et al., 2006; Holmes et al., 2006; Waller et al., 2005), but to date no

An anaerobic microcosm study of TCE transformation by microbes stimulated from the Gilbert-Mosley site, Wichita, Kansas

Creator:: Pon, George
Abstract:: A mix-culture of methanogenic and sulfate-reducing bacteria was capable of degrading trichloroethylene (TCE) to dichloroethylene (DCE). The culture was incubated under anaerobic conditions within a soil sample taken from Gilbert-Mosley site, Wichita, Kansas. To stimulate the growth of indigenous bacteria, a carbon and energy source was added in this microcosm...
Resource Type:: Masters Thesis
Full Text:: control to which no substrate was added showed no signs of TCE transformation. Addition of suitable

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:: ammonia was very slow. Microorganisms stimulated on propene and octane showed no ability to transform CF

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:: simulations were used to investigate radon partitioning in static (no-flow) experiments and in single-well

Aerobic degradation of chlorinated ethenes by Mycobacterium strain JS60 in the presence of organic acids

Creator:: Blatchford, Christina
Abstract:: This study evaluated the potential of the aerobic Mycobacterium strain JS6O to grow on a variety of organic acid substrates, and the possible effects an organic acid would have on the degradation rate of vinyl chloride (VC). A series of batch growth tests were designed to determine the time it...
Resource Type:: Masters Thesis
Full Text:: presence of c-DCE was shown to partially inhibit VC degradation, but had no effect on ethylene degradation

Aerobic cometabolism of trichloroethylene and cis-dichloroethylene in propane-fed microcosms from the McClellan Air Force Base

Creator:: Timmins, Brian
Abstract:: This thesis focused on using microcosms to better understand the aerobic cometabolic processes of TCE and cis-DCE transformation that occurred during a Cometabolic Air Sparging (CAS) demonstration at McClellan Air Force Base. The microcosms were created with groundwater and aquifer materials from the demonstration site. Concentrations of compounds in the...
Resource Type:: Masters Thesis
Full Text:: transformation. Complete removal of the CAHs occurred in these microcosms. No other nutrients, such as

Bench-scale study for the bioremediation of chlorinated ethylenes at Point Mugu Naval Air Weapons Station, Point Mugu California, IRP Site 24

Creator:: Keeling, Matthew Thomas
Abstract:: Laboratory scale microcosm studies were conducted using site specific groundwater and aquifer solids to assess the feasibility of stimulating indigenous microorganisms in-situ to biologically transform Trichloroethylene (TCE) and its lesser chlorinated daughter products dichloroethylene (DCE) and vinyl chloride (VC). Three different treatments were conducted to determine the best approach for...
Resource Type:: Masters Thesis
Full Text:: -3 and 10-4 atmospheres had no effect on the transformation of VC. Rapid methanol utilization

ScholarsArchive@OSU

Radon-222 as a tracer for performance assessment of NAPL remediation technologies in the saturated zone : an experimental investigation

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

Factors controlling halogenated and nonhalogenated alkene growth substrate range of vinyl chloride-utilizing bacteria

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

An anaerobic microcosm study of TCE transformation by microbes stimulated from the Gilbert-Mosley site, Wichita, Kansas

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

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

Aerobic degradation of chlorinated ethenes by Mycobacterium strain JS60 in the presence of organic acids

Aerobic cometabolism of trichloroethylene and cis-dichloroethylene in propane-fed microcosms from the McClellan Air Force Base

Bench-scale study for the bioremediation of chlorinated ethylenes at Point Mugu Naval Air Weapons Station, Point Mugu California, IRP Site 24

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