Index Catalog // ScholarsArchive@OSU

Quantifying in situ β-glucosidase and phosphatase activity in groundwater

Creator:: Radakovich, Karen M
Abstract:: Enzymes play an important role in the environment, they breakdown natural-occurring and anthropogenic molecules so that they can be transported into cells and utilized. Enzyme assays are routinely used in soil science and oceanography to measure the activities of specific processes and to serve as general indicators of microbial activity....
Resource Type:: Dissertation
Full Text:: -Glucosidase and Phosphatase Activity in Groundwater. Abstract approved: Enzymes play an important role in

A numerical model for the fate and transport of chlorinated phenols in groundwater

Creator:: Lee, Sang Bong
Abstract:: The objective of this study was to develop a numerical model for the movement and fate of chlorinated phenols in groundwater. In the first part, a numerical model for several different equilibrium and nonequilibrium sorption processes under isothermal conditions is developed for one-dimensional, steady-state water flow in soil columns. The...
Resource Type:: Dissertation
Full Text:: chlorinated phenols in groundwater AN ABSTRACT OF THE THESIS OF Sang Bong Lee for the degree of Doctor of

Mass transfer constraints on the feasability on in situ bioremediation of contaminated groundwater

Creator:: Fry, Virginia A., 1959-
Resource Type:: Dissertation
Full Text:: on the Feasibility of In Situ Bioremediation of Contaminated Groundwater Abstract Approved: Jonathan

Thermodynamic analysis of geothermal energy systems with forced recovery from aquifers

Creator:: Lee, Se Kyoun
Abstract:: A thermodynamic analysis of forced geoheat recovery from aquifers has been accomplished. The system investigated consists of a single recharging-discharging well pair, in a horizontally extensive aquifer, with either power generation or space heating as surface applications. The space heating systems investigated are (i)direct heating, (ii)heat pumps and (iii)a combination...
Resource Type:: Dissertation

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:: -situ Bioremedication of Pentachlorophenol Contaminated Groundwater AN ABSTRACT OF THE DISSERTATION OF

Solutions to some linear evolutionary systems of equations : study of the double porosity model of fluid flow in fractured rock and its applications.

Creator:: Bodvarsson, Gudrun M.
Abstract:: The present work is a study of three degenerate, linear parabolic systems of equations, each of which represents a version of the so-called double porosity model for underground fluid flows in natural fractured rock. These systems of equations together with initial and boundary conditions describe single-phase flows in fluids, slightly...
Resource Type:: Dissertation

Fate and transport of the surfactant linear alkylbenzenesulfonate in a sewage-contaminated aquifer

Creator:: Krueger, Carolyn J.
Abstract:: Linear alkylbenzenesulfonate (LAS) is the most widely used anionic surfactant in commercial detergent formulations. The environmental fate of LAS is of interest because of its disposal to wastewater treatment facilities and subsequent occurrence as a micropollutant in surface waters and groundwater. While LAS fate in wastewater treatment systems and surface...
Resource Type:: Dissertation
Full Text:: groundwater. While LAS fate in wastewater treatment systems and surface waters is well-documented, few

The role of iron-oxides in U(VI) adsorption and the kinetics of contaminant organic reduction

Creator:: Logue, Brian A.
Abstract:: Contaminant transport in ground water is an important environmental process that affects a host of natural systems. Transport of contaminants is affected by many processes, including aqueous complexation, adsorption, and redox reactions. One of the most important components of an aquifer that controls transport is iron-oxide. In this study, the...
Resource Type:: Dissertation
Full Text:: ) through the subsurface by groundwater flow. The contaminant is transported through the zero-valent iron

Multi-metal equilibrium sorption and transport modeling for copper, chromium, and arsenic in an iron oxide-coated sand, synthetic groundwater system

Creator:: Osathaphan, Khemarath
Abstract:: The mixed metal compound, Chromated Copper Arsenate, or CCA, has been widely used as a wood preservative. The metal ions in CCA, CrO²⁻₄, Cu²⁺, and AsO³⁻₄, have been found in contaminated surface and subsurface soils and groundwater nearby some wood preservative facilities and nearby wood structures. Iron oxides are a...
Resource Type:: Dissertation
Full Text:: , Synthetic Groundwater System Abstract approved: Peter 0. Nelson The mixed metal compound, Chromated

An evaluation of the economic impacts of reducing soil erosion and groundwater pollution in non-irrigated farming systems of northeastern Oregon

Creator:: Akinsanmi, Josiah Akinlayo
Abstract:: Increases in food demand, favorable commodity markets and drive towards increasing productivity at a greater economic efficiency have accelerated negative agricultural externalities, particularly erosion and water quality. The potential impact of these externalities on environmental quality and human health prompted an examination of current and potential production strategies on four...
Resource Type:: Dissertation
Full Text:: GROUNDWATER POLLUTION IN NON-IRRIGATED FARMING SYSTEMS OF NORTHEASTERN OREGON. Increases in food demand

ScholarsArchive@OSU

Quantifying in situ β-glucosidase and phosphatase activity in groundwater

A numerical model for the fate and transport of chlorinated phenols in groundwater

Mass transfer constraints on the feasability on in situ bioremediation of contaminated groundwater

Thermodynamic analysis of geothermal energy systems with forced recovery from aquifers

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

Solutions to some linear evolutionary systems of equations : study of the double porosity model of fluid flow in fractured rock and its applications.

Fate and transport of the surfactant linear alkylbenzenesulfonate in a sewage-contaminated aquifer

The role of iron-oxides in U(VI) adsorption and the kinetics of contaminant organic reduction

Multi-metal equilibrium sorption and transport modeling for copper, chromium, and arsenic in an iron oxide-coated sand, synthetic groundwater system

An evaluation of the economic impacts of reducing soil erosion and groundwater pollution in non-irrigated farming systems of northeastern Oregon

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