Index Catalog // ScholarsArchive@OSU

Inhibition of the ammonia oxidizing bacteria Nitrosomonas europaea by the emerging contaminant triclosan

Creator:: Hughes, Jamie L.
Abstract:: Identifying the inhibition of ammonia oxidizing bacteria (AOB) by emerging organic contaminants is crucial due to the importance of AOB in wastewater treatment, the widespread use of antibacterial agents such as triclosan (TCS) in consumer products, and the sensitivity of N. europaea to inhibitors. Triclosan inhibition of nitrification by AOB...
Resource Type:: Masters Thesis
Full Text:: . Hughes for the degree of Master of Science in Environmental Engineering presented on May 21, 2013

The Vadose Zone as a Hyporheic Carbon Source : A Look at Temporal Trends in Hyporheic Zone pCO₂

Creator:: Brandes, Jason B.
Abstract:: Stream chemistry studies conducted in the forested Watershed 1 of the HJ Andrews Experimental Forest show a contribution of CO2 from the hyporheic zone. Hyporheic CO₂ concentrations, measured as pCO₂, have a seasonal trend as well as a responsiveness to storm events. Concentrations are highest at the end of the...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE THESIS OF Jason B. Brandes for the dual degree of Master of Science in Water Resources

Kinetic and molecular effects of sulfate reduction on a dechlorinating culture under chemostat growth conditions

Creator:: Berggren, Dusty Rose V.
Abstract:: Chlorinated ethenes are common groundwater contaminants that may be treated through in-situ bioremediation. Relationships between the reducing environment, available electron donors and acceptors, reaction kinetics, and microbial community composition must be further understood to successfully engineer remediation schemes in the complex subsurface environment. This thesis work investigated the effect of...
Resource Type:: Masters Thesis
Full Text:: . Berggren for the degree of Master of Science in Chemical Engineering presented on September 21, 2011

Transformation of Phenanthrene by Mycobacterium sp. ELW1 and the Formation of Toxic Metabolites

Creator:: Schrlau, Jill E.
Abstract:: The ability of Mycobacterium sp. ELW1, a novel microbe capable of alkene oxidation, to co-metabolize phenanthrene (PHE) was studied. ELW1 was able to completely co-metabolize PHE, at different concentrations below its water solubility limit, in an aqueous environment. The alkene monooxygenases in ELW1, used to initiate oxidation of PHE, were...
Resource Type:: Masters Thesis
Full Text:: the degree of Master of Science in Environmental Engineering presented on September 20, 2016

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:: degree of Master of Science in Civil Engineering presented on September 22, 2005. Title: Aerobic

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:: Barker for the degree of Master of Science in Environmental Engineering presented on September 16, 2014

Effect of electron donors on the reductive dechlorination of trichlorofluoroethylene in anaerobic microcosms and in situ push-pull tests

Creator:: Louie, Erika N.
Abstract:: This research focuses on the anaerobic transformation of trichloroethylene (TCE) that is occurring in the subsurface of the Evanite site in Corvallis, OR. Two anaerobic studies were conducted to investigate the effects of microbial communities in the presence of different electron donors during the anaerobic degradation of trichlorofluoroethylene (TCFE), and...
Resource Type:: Masters Thesis
Full Text:: . Louie for the degree of Master of Science in Civil Engineering and in Civil Engineering presented on

Microcosm study of enhanced biotransformation of vinyl chloride to ethylene with TCE additions under anaerobic conditions from Point Mugu, California

Creator:: Pang, Incheol Jonathan
Abstract:: This microcosm study demonstrated the enhanced anaerobic transformation of vinyl chloride (VC) to ethylene. A previous microcosm study from Point Mugu site showed the accumulation of VC due to the slow transformation step of VC to ethylene. To overcome the rate-limiting step, two laboratory experiments tested the effect of trichloroethylene...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE THESIS OF Incheol Jonathan Pang for the degree of Master of Science in Civil Engineering

Abiotic transformations of TKEBS and other lower homologues of tetraalkoxysilanes by subsurface solids from a contaminated site

Creator:: Chu, Min-Ying
Resource Type:: Masters Thesis
Full Text:: the degree of Master of Science in Civil Engineering presented on July 29, 1999. Title: Abiotic

Experimental demonstration and modeling of aerobic cometabolism of 1,4-dioxane by isobutane-utilizing microorganisms in aquifer microcosms

Creator:: Rolston, Hannah M.
Abstract:: 1,4-dioxane, a probable human carcinogen at low (< 1ppb) concentrations, has emerged as a groundwater contaminant due to its historical use as a stabilizer for the chlorinated solvent 1,1,1-trichloroethane. Aerobic cometabolism, the use of a primary substrate to induce the production of microbial enzymes that fortuitously degrade other compounds, is...
Resource Type:: Masters Thesis
Full Text:: . Rolston for the degree of Master of Science in Environmental Engineering presented on July 24, 2017

ScholarsArchive@OSU

Inhibition of the ammonia oxidizing bacteria Nitrosomonas europaea by the emerging contaminant triclosan

The Vadose Zone as a Hyporheic Carbon Source : A Look at Temporal Trends in Hyporheic Zone pCO₂

Kinetic and molecular effects of sulfate reduction on a dechlorinating culture under chemostat growth conditions

Transformation of Phenanthrene by Mycobacterium sp. ELW1 and the Formation of Toxic Metabolites

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

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

Effect of electron donors on the reductive dechlorination of trichlorofluoroethylene in anaerobic microcosms and in situ push-pull tests

Microcosm study of enhanced biotransformation of vinyl chloride to ethylene with TCE additions under anaerobic conditions from Point Mugu, California

Abiotic transformations of TKEBS and other lower homologues of tetraalkoxysilanes by subsurface solids from a contaminated site

Experimental demonstration and modeling of aerobic cometabolism of 1,4-dioxane by isobutane-utilizing microorganisms in aquifer microcosms

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