Index Catalog // ScholarsArchive@OSU

Uranium and technetium bio-immobilization in intermediate-scale physical models of an in situ bio-barrier

Creator:: Michalsen, Mandy M.
Abstract:: Metal and hydrogen ion acidity and extreme nitrate concentrations typical of Department of Energy (DOE) legacy waste sites pose formidable challenges to successful implementation of in situ bio-immobilization. Intermediate-scale (~ 2.5 m), flow through models of an in situ bio-barrier were constructed to investigate U and Tc removal from groundwater...
Resource Type:: Dissertation
Full Text:: : ____________________________________________ Jonathan D. Istok Metal and hydrogen ion acidity and extreme nitrate

Quantification of advection and dispersion in lateral subsurface flowpaths at the hillslope-scale

Creator:: Victory, Nichole I.
Abstract:: It is becoming increasingly important to understand fundamental hillslope-scale hydrological processes. Most hillslope-sale transport experiments have generally focused on conceptual findings or other aspect of flow behavior, rather than the quantification of the mass transport mechanisms of advection and dispersion. When the velocities have been quantified, dispersion has been mentioned...
Resource Type:: Masters Thesis
Full Text:: : __________________________________________ Jonathan D. Istok It is becoming increasingly important to understand fundamental hillslope

Fate of THMs in Columbia River basalts during aquifer storage and recovery

Creator:: Bertrand, Danelle
Abstract:: Use of basalt aquifers for aquifer storage and recovery (ASR) systems is increasing in the Pacific Northwest due to the large aerial extent of the Columbia River Basalt Group and the suitability of basalts as ASR reservoirs. However, the degradation of trihalomethanes (THMs), potentially carcinogenic disinfection by-products present in the...
Resource Type:: Masters Thesis
Full Text:: : Jonathan D. Istok Dorthe Wildenschild Use of basalt aquifers for aquifer storage

Anaerobic reductive dechlorination of TCE and TCFE in TCE contaminated sediments : enhanced bioremediation and bioaugmentation

Creator:: Lee, Jae-Hyuk
Abstract:: This research focused on the enhanced reductive dechlorination of trichloroethene (TCE) and its surrogate, trichlorofluoroethene (TCFE), using two bioremediation methods in anaerobic conditions. Two anaerobic bioremediation studies were conducted to investigate the effects of microbial communities in the presence of different electron acceptors and donors during anaerobic reductive dechlorination of...
Resource Type:: Dissertation
Full Text:: : -------"--------------------------- Jonathan D. Istok This research focused on the enhanced reductive dechlorination of trichloroethene

Geostatistics applied to groundwater contaminant plume characterization

Creator:: Cooper, Richard Mark
Resource Type:: Masters Thesis
Full Text:: Dr. Jonathan Istok for his patient guidance, consistent support and friendship. Regardless of how

Assessing groundwater vulnerability to contamination using finite element modeling and geographic information systems

Creator:: Rea, Alan H.
Abstract:: A method was developed for assessing the vulnerability of groundwater to contamination from contaminant sources at the soil surface, using a numerical groundwater flow model linked to a digital map database. The method was applied using the pcARC/INFO Geographic Information System (GIS) to input, store, and manipulate base maps, resulting...
Resource Type:: Masters Thesis
Full Text:: Systems Abstract approved: T* Jonathan D. Istok A method was developed for assessing the

Multivariate geostatistical analysis of groundwater contamination by pesticide and nitrate

Creator:: Smyth, Jeffrey D.
Abstract:: A field study was conducted to determine the applicability of multivariate geostatistical methods to the problem of estimating and simulating pesticide concentrations in groundwater from measured concentrations of nitrate and pesticide, when pesticide is undersampled. Prior to this study, no published attempt had been made to apply multivariate geostatistics to...
Resource Type:: Masters Thesis
Full Text:: Geostatistical Analysis of Groundwater Contamination by Pesticide and Nitrate Abstract approved: / Jonathan

Numerical simulation of anaerobic reductive dechlorination of CAHs in continuous flow systems

Creator:: Mustafa, Nizar Ahmad
Abstract:: Halogenated organic compounds have had widespread and massive applications in industry, agriculture, and private households, for example, as degreasing solvents, flame retardants and in polymer production. They are released to the environment through both anthropogenic and natural sources. The most common chlorinated solvents present as contaminants include tetrachloroethene (PCE, perchloroethene)...
Resource Type:: Dissertation

Uranium and technetium bio-immobilization in intermediate-scale permeable reactive scale barriers

Creator:: Sapp, Mandy M.
Abstract:: Groundwater at Oak Ridge National Laboratory's Field Research Center (FRC) is contaminated with U(VI) and Tc(VII), has pH values as low as 3.3, and nitrate concentrations as high as 120 mM. The objective of this research was to determine if in-situ bio-immobilization is a viable treatment alternative for this water....
Resource Type:: Masters Thesis
Full Text:: -immobilization in Intermediate-Scale Permeable Reactive Barriers Abstract approved: Jonathan D. Istok

Diffusion of selected radionuclides through Hanford Trench 8 soil material

Creator:: Schwab, Kristen E.
Abstract:: Shallow land burial in vadose zone sediment at the Hanford Site in Washington is being considered for the disposal of Category 3 low-level waste. A series of column experiments were conducted to evaluate and model the performance of the soil surrounding the trench encasement material for iodine-129 and technetium-99 by...
Resource Type:: Masters Thesis
Full Text:: , representing Radiation Physics Co-r Professor, representing Environmental Engineering of Department of

ScholarsArchive@OSU

Uranium and technetium bio-immobilization in intermediate-scale physical models of an in situ bio-barrier

Quantification of advection and dispersion in lateral subsurface flowpaths at the hillslope-scale

Fate of THMs in Columbia River basalts during aquifer storage and recovery

Anaerobic reductive dechlorination of TCE and TCFE in TCE contaminated sediments : enhanced bioremediation and bioaugmentation

Geostatistics applied to groundwater contaminant plume characterization

Assessing groundwater vulnerability to contamination using finite element modeling and geographic information systems

Multivariate geostatistical analysis of groundwater contamination by pesticide and nitrate

Numerical simulation of anaerobic reductive dechlorination of CAHs in continuous flow systems

Uranium and technetium bio-immobilization in intermediate-scale permeable reactive scale barriers

Diffusion of selected radionuclides through Hanford Trench 8 soil material

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