Index Catalog // ScholarsArchive@OSU

Down-borehole permeable barrier reactor : primary substrate selection for aerobic dichlorophenol degradation

Creator:: Kaslik, Peter J.
Abstract:: In situ bioremediation of pentachlorophenol-contaminated ground water in a sequential anaerobic-aerobic down borehole permeable barrier reactor requires a non-toxic primary substrate for dichlorophenol cometabolism. Serum bottle tests comparing the effectiveness of eight primary substrates for aerobic dichlorophenol degradation showed phenol to be the most effective followed by imitation vanilla flavoring,...
Resource Type:: Masters Thesis
Full Text:: approved: Sandra L. Woods In situ bioremediation of pentachlorophenol-contaminated ground water in a

A mathematical model for adsorptive bubble-separation processes

Creator:: T'ang, Li
Abstract:: Adsorptive bubble-separation processes are used to remove adsorptive contaminants from wastewater. A mathematical model was developed for the adsorptive bubble separation processes in a countercurrent column. The model included an assumption that linear adsorption of the solute occurred on the gas bubbles. Predictions indicated that aqueous column height has less...
Resource Type:: Dissertation
Full Text:: Processes Abstract approved: Redacted for Privacyi Sandra Woods Adsorptive bubble-separation processes are

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:: DISSERTATION OF Roger L. Ely for the degree of Doctor of Philosophy in Civil Engineering presented on January

Numerical response of concrete-lined tunnels crossing active faults

Creator:: Lange, Stephanie
Abstract:: A challenge for municipal authorities of growing urban areas is to provide larger and faster transportation and utility networks that are safe and resilient to significant disruptions after an earthquake event and other disasters. Urban regions, like the San Francisco Bay or the Los Angeles area, are situated in seismically...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Stephanie Lange for the

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:: Biologically Mediated Reductive Dechlorination Pathways. Abstract Approved:(Redacted for Privacy Sandra L

Startup and performance of a gas-permeable-membrane-supported (GPMS) biofilm system using a mixed culture of methylotrophs to degrade methylene chloride, chloroform, and carbon tetrachloride

Creator:: Ely, Roger L.
Abstract:: The methane monooxygenase (MMO) enzyme, used by methylotrophs to oxidize methane, has been shown to possess quite broad substrate specificity, being able to oxidize many organic compounds including n-alkanes, n-alkenes, ethers, and aromatic, alicyclic, and heterocyclic compounds. In this research, it was sought to determine whether a gas-permeable-membrane-supported (GPMS) biofilm...
Resource Type:: Masters Thesis
Full Text:: Chloride Chloroform, and Carbon Tetrachloride. Abstract approved: Redacted for Privacy Sandra L. Woods

The effect of environmental conditions on the reductive dechlorination of pentachlorophenol by a mixed, methanogenic culture

Creator:: Stuart, Sheryl L.
Resource Type:: Dissertation
Full Text:: Mixed, Methanogenic Culture. Abstract approved: Sandra L. Woods Reductive dechlorination is an energy

Demonstration of a permeable barrier technology for the in-situ bioremediation of pentachlorophenol contaminated groundwater

Creator:: Cole, Jason David
Abstract:: A pilot scale demonstration of a biological permeable barrier was conducted in a pentachlorophenol-contaminated aquifer at a wood preserving facility. A permeable reactor was constructed to fit within a large diameter well. Arranged in series, a cylindrical reactor 24" x 36" (0.61 x 0.91m) (diameter x height) was partitioned to...
Resource Type:: Dissertation
Full Text:: opportunity to thank my major professor Dr. Sandra Woods for the guidance and enthusiasm that she provided

Reductive, dechlorination of sediment-sorbed polychlorinated biphenyls by vitamin B₁₂(subscript s)

Creator:: Trobaugh, Darin James
Abstract:: The reductive dechlorination of chlorobiphenyls in sediment by titanium(III) citrate-reduced vitamin Bus was studied in batch reactors. Long term ampoule studies demonstrated reductive dechlorination of sediment-sorbed 2,3,4,5,6-pentachlorobiphenyl (2,3,4,5,6-PeCB) to tetra-, tri-, di-, and monochlorobiphenyl products. Over 50% chlorine removal was observed over 160 days. The results of the ampoule experiment...
Resource Type:: Masters Thesis
Full Text:: Dechlorination of Sediment-Sorbed Polychlorinated Biphenyls by Vitamin B12s. Abstract approved.:--- Sandra L

A kinetic approach for the determination of sorption rate constants using a column-type reactor

Creator:: Patrier, Lionel
Abstract:: A Langmuir sorption model incorporating a second step of irreversible absorption was applied to a model soil system. The column was packed with cellulose triacetate; pulse and step input tests with 3,4-dichlorophenol were performed; the effluent concentration was measured by electron capture detector gas chromatography and sorption rate constants were...
Resource Type:: Masters Thesis
Full Text:: Privacy Abstract approved:_ ,..--- Sandra L. Woods A Langmuir sorption model incorporating a second step

ScholarsArchive@OSU

Down-borehole permeable barrier reactor : primary substrate selection for aerobic dichlorophenol degradation

A mathematical model for adsorptive bubble-separation processes

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

Numerical response of concrete-lined tunnels crossing active faults

A model for the prediction of biologically mediated reductive dechlorination pathways

Startup and performance of a gas-permeable-membrane-supported (GPMS) biofilm system using a mixed culture of methylotrophs to degrade methylene chloride, chloroform, and carbon tetrachloride

The effect of environmental conditions on the reductive dechlorination of pentachlorophenol by a mixed, methanogenic culture

Demonstration of a permeable barrier technology for the in-situ bioremediation of pentachlorophenol contaminated groundwater

Reductive, dechlorination of sediment-sorbed polychlorinated biphenyls by vitamin B₁₂(subscript s)

A kinetic approach for the determination of sorption rate constants using a column-type reactor

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