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Articles 1 - 30 of 35
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Hydrologic Modeling With Remote Sensing For The Estimation Of Groundwater Resources Within The Sand River Catchment, South Africa, Sophia Bakar
Electronic Theses and Dissertations
The Sand River Catchment is an important tributary of the transboundary Limpopo River in South Africa, which spans Botswana, Mozambique, South Africa, and Mozambique. Groundwater is a critical resource in the region, especially in the context of population growth and climate change. Data are needed for proper management of these water resources. In regions where groundwater data are sparse in time, space, or both, the most promising solutions come from satellites and hydrologic models. Regional literature suggests that the Soutpansberg Mountains, located within the Sand Catchment, are high-elevation water towers with uncertain groundwater resources. Improved understanding of groundwater resources in …
Sustainable Urban Groundwater Governance In Faisalabad, Pakistan: Challenges And Possibilities., Shahbaz Altaf
Sustainable Urban Groundwater Governance In Faisalabad, Pakistan: Challenges And Possibilities., Shahbaz Altaf
Electronic Theses and Dissertations
Groundwater use is high in developing countries, especially in places where municipal water authorities struggle to meet the water demand of their residents. To analyze the interactions between groundwater and piped water in the Global South context, Faisalabad, Pakistan was taken as the case study area. Using the Institutional Analysis and Development framework and Elinor Ostrom’s design principles as analysis tools, formal and informal institutions governing the piped water and groundwater, including their congruence with the social and ecological factors, were explored. The results showed that scarcity of piped water pushed people towards groundwater and the absence of informal and …
Investigation Of The Hydrogeology Of The Memphis Light, Gas, And Water Shaw Wellfield, Shelby County, Tennessee, Kate Marie Moore
Investigation Of The Hydrogeology Of The Memphis Light, Gas, And Water Shaw Wellfield, Shelby County, Tennessee, Kate Marie Moore
Electronic Theses and Dissertations
The dynamics of sources and pathways of recharged water to the semi-confined Memphis and confined Fort Pillow aquifers were investigated to assess the sustainability and vulnerability of groundwater resources within the Shaw wellfield located in Memphis, Tennessee. Geochemical and environmental tracer data were used to study compartmentalized groundwater flow in the Memphis and Fort Pillow aquifers, assess the vulnerability of the Memphis aquifer to modern water recharge (<60 years old), and to determine the source(s) and pathways of modern water recharge. Hydrologic tracer data indicate wells in the northwest corner of Shaw wellfield are vulnerable to modern water recharge, with wells 704 and 708 having up to 17% component of modern water. Isotopic data show the Fort Pillow aquifer water has an older and chemically distinct source from the Memphis aquifer, which supports groundwater flow to the Fort Pillow aquifer is compartmentalized from that in the Memphis aquifer.
Characterization Of Hydraulic Properties Of The Memphis Aquifer By Conducting Pumping Tests In The Memphis Area, Tennessee, Sofia Sahagun Covarrubias
Characterization Of Hydraulic Properties Of The Memphis Aquifer By Conducting Pumping Tests In The Memphis Area, Tennessee, Sofia Sahagun Covarrubias
Electronic Theses and Dissertations
The limitation of field measurements leads to parameter non-uniqueness of numerical models, which can be addressed by including more parameter data. Six pumping tests were conducted in five municipal well fields within Shelby County following the procedure described in the ASTM D4050-14 and considering strengthening factors to achieve greater reliability. Drawdown data of the pumping tests was analyzed using AQTESOLV, which allowed accounting for partial penetration and interference from neighboring production wells. The values of transmissivity and storativity estimated have a combined range of 600 to 3100 m2/day and 0.0005 to 0.002, respectively, varying within one order of magnitude on …
Application Of A Numerical Groundwater Model To Determine The Spatial Configuration Of Breaches Near A Municipal Well Field In Memphis, Tennessee, Hugo Enrique Torres Uribe
Application Of A Numerical Groundwater Model To Determine The Spatial Configuration Of Breaches Near A Municipal Well Field In Memphis, Tennessee, Hugo Enrique Torres Uribe
Electronic Theses and Dissertations
Thinning or localized breaches in an aquitard warrant concern as this limits the protection it affords to water supply aquifers underneath. The objective of this study was to assess the potential spatial configurations of breaches within the aquitard overlying the Memphis aquifer for the Sheahan well field in Memphis, Tennessee. A three-dimensional groundwater model was utilized to investigate leakage pathways into the well field when simulating five potential breach configurations under three different hydraulic conductivity values. Through particle tracking analysis, estimates for the modern water percentage and apparent age of the modern water extracted by the production wells at the …
Evaluation Of Groundwater Sodium And Sodium Uptake In Taxodium And Its Hybrids On Galveston Island, Texas, Daniel Morgan
Evaluation Of Groundwater Sodium And Sodium Uptake In Taxodium And Its Hybrids On Galveston Island, Texas, Daniel Morgan
Electronic Theses and Dissertations
In September 2008, Hurricane Ike swept through the Gulf of Mexico striking the Gulf Coast, claiming hundreds of lives and causing billions of dollars in damage. The hurricane left behind elevated sea salt concentrations in the soil and groundwater, preventing the unaided return of live oaks and other species to the island. To determine effective ways to ameliorate the elevated Na+ concentrations in the soil, eight treatments were applied to the soil and combinations of three species of plants, live oak (Quercus virginiana), hybrid bald cypress (Taxodium ‘T406’), and yellow hibiscus (Hibiscus hamabo …
Development Of A Numerical Multi-Layered Groundwater Model To Simulate Inter-Aquifer Water Exchange In Shelby County, Tennessee, Rodrigo Villalpando Vizcaino Mr
Development Of A Numerical Multi-Layered Groundwater Model To Simulate Inter-Aquifer Water Exchange In Shelby County, Tennessee, Rodrigo Villalpando Vizcaino Mr
Electronic Theses and Dissertations
Inter-aquifer water exchange between the shallow and Memphis aquifers in Shelby County, Tennessee, poses a contamination threat due to the downward migration of younger, lesser quality groundwater, into deeper, more pristine aquifers. Discontinuities in the protective upper Claiborne confining unit (UCCU) allow for leakage into the Memphis aquifer, a sand-dominated aquifer that provides about 95% of the water used in the Memphis area. A multi-layered 3D groundwater model for Shelby County was created using the United States Geological Survey's MODFLOW-NWT program, to evaluate water exchange for a simulation period from January 2005 to December 2016. Results indicate an overall leakage …
Recharge Of The Memphis Aquifer In An Incised Urban Watershed: Implications Of Impervious Surfaces And Stream Incision, Spencer Randolph Smith
Recharge Of The Memphis Aquifer In An Incised Urban Watershed: Implications Of Impervious Surfaces And Stream Incision, Spencer Randolph Smith
Electronic Theses and Dissertations
Recharge processes to the Memphis aquifer are poorly understood, but previous studies show that rural stream gullies with sand bottoms are more efficient for recharge than in the upland areas. The same is expected in urban streams where the Memphis Sand is exposed with surrounding upland areas that have substantial urban land use. Water balance research in Sandy Creek in Jackson, Tennessee, provides information regarding infiltration and potential recharge to the Memphis aquifer that may be typical of urban stream valleys where sandy Coastal Plain aquifers are exposed beneath fine-grained surficial deposits. Sixteen and one-half percent of the Sandy Creek …
Evaluating Modern Recharge To The Memphis Aquifer At The Lichterman Well Field, Memphis, Tennessee, Michael Ryan Smith
Evaluating Modern Recharge To The Memphis Aquifer At The Lichterman Well Field, Memphis, Tennessee, Michael Ryan Smith
Electronic Theses and Dissertations
The Lichterman well field is a municipal water plant in Shelby County, Tenneessee, vulnerable to vertical seepage of modern groundwater (<60 yrs) into the underlying semiconfined Memphis aquifer. In order to identify probable pathways and sources of modern water, 11 production wells and 1 shallow monitoring well sampled for major solute chemistry,3H,3He, SF6and noble gases. Hydrostratigraphic cross sections reveal potential pathways of modern water leakage to the Memphis aquifer adjacent to the well field. Geochemical inverse modeling estimates up to 14% modern water from sampled production wells. Lumped parameter modeling best fit a piston flow model for regional recharge and dispersion model for local recharge through suspected hydrologic windows estimating fractions of modern water from 14 to 29.5%. Unconfined conditions in the Memphis aquifer and limited saturation of the overlying shallow aquifer may limit vertical leakage of modern water into the Memphis aquifer.
Hardbottom Characterization And Relationship To The Geologic Framework In Long Bay, South Carolina, Cathryn J. Wheaton
Hardbottom Characterization And Relationship To The Geologic Framework In Long Bay, South Carolina, Cathryn J. Wheaton
Electronic Theses and Dissertations
Hardbottom seafloor is a common element among sediment-starved portions of the inner continental shelf along the U.S. Atlantic margin. These areas are characterized by indurated sediment surfaces that are heavily altered by biological and physical processes. Long Bay, in northeastern South Carolina, offers ideal environmental conditions for hardbottom exposure with only patchy Holocene sand deposits, interspersed with extensive hardbottom areas. Here we use high-resolution multibeam bathymetry, CHIRP subbottom profiling and electrical resistivity data, along with surficial sediment samples, hardbottom thin sections, and water column radioisotope (radon-222) analysis to investigate the origin and geologic framework of a region of hardbottom seafloor …
Assessment And Optimization Of Environmental Systems Using Data Analysis And Simulation., Milad Ebrahimi
Assessment And Optimization Of Environmental Systems Using Data Analysis And Simulation., Milad Ebrahimi
Electronic Theses and Dissertations
For most environmental systems, specifically wastewater treatment plants and aquifers, a significant number of performance data variables are attained on a time series basis. Due to the interconnectedness of the variables, it is often difficult to assess over-arching trends and quantify temporal operational performance. The objective of this research study was to provide an effective means for comprehensive temporal evaluation of environmental systems. The proposed methodology used several multivariate data analyses and statistical techniques to present an assessment framework for the water quality monitoring programs as well as optimization of treatment plants and aquifer systems. The developed procedure considered the …
Evaluation And Evolution Of A Groundwater Contaminant Plume At The Former Shelby County Landfill, Memphis, Tennessee, Scott Robert Schoefernacker
Evaluation And Evolution Of A Groundwater Contaminant Plume At The Former Shelby County Landfill, Memphis, Tennessee, Scott Robert Schoefernacker
Electronic Theses and Dissertations
The unlined former Shelby County Landfill in Memphis, Tennessee, lies in the flood plain of the Wolf River and is known to be the source of low-level contamination in the underlying alluvial (shallow) and Memphis aquifers. Prior to closure, discovery of a hydrogeologic window in the upper Claiborne confining unit overlying the Memphis aquifer 0.2 km north of the landfill led to several groundwater investigations by the U.S. Geological Survey to evaluate the threat posed to the Memphis aquifer, the regional source for municipal water supplies. As the landfill nears its 30th year of post-closure monitoring, this study examines the …
A Geospatial Investigation Of The Potential For Inter-Aquifer Communication In Shelby County, Tennessee: A Multi-Scale Spatial Dependency Model, Andrew Barnett Murphy
A Geospatial Investigation Of The Potential For Inter-Aquifer Communication In Shelby County, Tennessee: A Multi-Scale Spatial Dependency Model, Andrew Barnett Murphy
Electronic Theses and Dissertations
The upper-Claiborne confining unit overlies the Memphis aquifer in Shelby County, Tennessee. Hydrogeologic windows are locations where clay intervals are thin or absent within the confining unit, resulting in localized vertical recharge. Previous work has not been geostatistically focused. In this study, 430 borehole geophysical logs were analyzed. The objectives were to: 1) capture and analyze exisiting well log data in a geodatabase 2) utilize geostatisitical modeling at a variety of scales 3) integrate well log data with historic water-table elevation trends and 4) produce multi scaled maps that illustrate hydrostratigraphic trends in terms of inter-aquifer communication. Geostatisitical ordinary kriging …
Groundwater Flow Tracing In Carter Saltpeter Cave And Toll Branch, Carter County, Tn, Aaron G. Doyka
Groundwater Flow Tracing In Carter Saltpeter Cave And Toll Branch, Carter County, Tn, Aaron G. Doyka
Electronic Theses and Dissertations
Groundwater tracing studies have shown a well-developed conduit system in the karst aquifer beneath the Buffalo Creek Watershed of Carter County, TN. Groundwater can quickly travel beneath topographic divides, transporting contaminants. Using GIS and field reconnaissance, two sites were selected for a two phase dye trace study. In May-June 2016 groundwater resurgences were located using activated carbon samplers, and in October-December 2016 flow velocities were measured using ISCO automatic water samplers. In study 1, a stream sinking in the back of Carter Saltpeter Cave was traced to its resurgence at Cave Springs Cave. In study 2, the dye mass centroid …
Vulnerability Assessment Of Groundwater To No3 Contamination Using Gis, Drastic Model And Geostatistical Analysis, Adela Beauty Adu Agyemang
Vulnerability Assessment Of Groundwater To No3 Contamination Using Gis, Drastic Model And Geostatistical Analysis, Adela Beauty Adu Agyemang
Electronic Theses and Dissertations
The study employed Geographical Information System (GIS) technology to investigate the vulnerability of groundwater to NO3 content in Buncombe County, North Carolina in two different approaches. In the first study, the spatial distribution of NO3 contamination was analyzed in a GIS environment using Kriging Interpolation. Cokriging interpolation was used to establish how NO3 relates to land cover types and depth to water table of wells in the county. The second study used DRASTIC model to assess the vulnerability of groundwater in Buncombe County to NO3 contamination. To get an accurate vulnerability index, the DRASTIC parameters were …
An Analysis Of The Relationship Between Snowpack And Groundwater Across Utah Watersheds., Samuel Wright
An Analysis Of The Relationship Between Snowpack And Groundwater Across Utah Watersheds., Samuel Wright
Electronic Theses and Dissertations
This thesis examined what type of relationship existed between snow water equivalence (SWE) volume and groundwater elevation within six sub-watersheds in Utah. Data was gathered on SWE from seventeen SNOTEL sites and groundwater elevation data was gathered from six continuously monitored groundwater wells. This data was gathered for January through May for 2011, 2013, and 2014 in order to represent the water conditions that were above average, below average, and average respectively. Using MLR formulas the total SWE for each sub-watershed was determined for each year/month. Afterwards a correlation analysis was performed to determine if any association existed between SWE …
The Influence Of Area, Groundwater, Climate, And Soil Properties On Tree Species Richness In The Southeastern United States, Alison Paula Lang
The Influence Of Area, Groundwater, Climate, And Soil Properties On Tree Species Richness In The Southeastern United States, Alison Paula Lang
Electronic Theses and Dissertations
The underlying factors that regulate species biodiversity gradients have been a major topic of debate as there is no single mechanism that can explain all the biodiversity patterns seen across the globe. The southeastern region in the United States exhibits an unusual trend of decreasing tree species richness from higher to lower latitudes on the Florida peninsula. This trend contradicts the widely marked latitudinal diversity gradient where species richness is highest in tropical zones and decreases towards extratropical regions. This study aims to identify the environmental factors that prompt this atypical gradient seen in tree species richness calculated from the …
Evaluation Of Groundwater Quality In Paleozoic Aquifers Using Gis Techniques, Central Texas, Garrett R. Harris
Evaluation Of Groundwater Quality In Paleozoic Aquifers Using Gis Techniques, Central Texas, Garrett R. Harris
Electronic Theses and Dissertations
Lab analyses of groundwater chemistry from monitoring wells completed in the Paleozoic Aquifers surrounding the Llano Uplift of Central Texas has been recorded and made available to the public through the Texas Water Development Board (TWDB). This study evaluated the results of these data dating back to the 1940s to determine changes over time, the dynamics of the hydrologic system, and the locations where hydraulic connectivity is most probable. The initial results established two distinct hydrologic systems that required the separation of the northern from the southern region. The northern sub-region (NSR) contains the largest expanse of continuity of both …
Recharge Pathways And Mechanisms To The Memphis Aquifer, John Michael Bursi
Recharge Pathways And Mechanisms To The Memphis Aquifer, John Michael Bursi
Electronic Theses and Dissertations
As the primary source of water for Memphis, Tennessee and surrounding areas, the Memphis aquifer is an important natural resource. Recharge to the Memphis aquifer, which is thought to occur by infiltration of precipitation in the exposure belt, is impeded by Quaternary loess and paleosols on the upland surfaces. This study investigated whether incised stream gullies provide a faster rate of infiltration, and potential recharge, relative to the upland surfaces. Through a year of monitoring of physical hydrology and water chemistry within a watershed at the Pinecrest research site, located in Fayette County, Tennessee, along with the implementation of environmental …
The Source Of Saline Groundwater In The Mississippi River Valley Alluvial Aquifer In Southeast Arkansas, Justin Michael Paul
The Source Of Saline Groundwater In The Mississippi River Valley Alluvial Aquifer In Southeast Arkansas, Justin Michael Paul
Electronic Theses and Dissertations
In this study, the source of historical chloride anomalies in the Mississippi River Valley alluvial aquifer from southeast Arkansas is investigated using spatial statistical and geochemical techniques. The spatial statistical and geochemical techniques are employed to determine whether the source of the saline groundwater is due to evaporative processes in the soil column, injection of saline fluids from depth, or infiltration from rivers. Spatial statistical analyses show chloride anomalies in the alluvial aquifer are more closely related to tectonic features associated with the injection of saline fluids from depth than evaporative concentration of soil waters that may have recharged groundwater. …
Performing A Steady-State Seepage Analysis Using Seep/W : A Primer For Engineering Students., Matthew R. Broaddus
Performing A Steady-State Seepage Analysis Using Seep/W : A Primer For Engineering Students., Matthew R. Broaddus
Electronic Theses and Dissertations
This thesis is comprised of five independent modules that were developed to provide a primer to understanding groundwater seepage. These modules serve as the template to conduct steady-state seepage analyses through embankments utilizing SEEP/W, a finite element seepage modeling program. Module 1 and 2 are more theoretical in nature to provide the background knowledge necessary to conduct a steady-state seepage analysis, while Modules 3, 4, and 5 focus more on the application of seepage models and how they can be used to solve various groundwater seepage problems. Supplementary material, including PowerPoint presentations, handouts, and a manual on how to utilize …
Quantifying Water Budgets To Evaluate The Hydrologic Performance Of Two Stormwater Detention Ponds In Coastal South Carolina, Samantha Corley
Quantifying Water Budgets To Evaluate The Hydrologic Performance Of Two Stormwater Detention Ponds In Coastal South Carolina, Samantha Corley
Electronic Theses and Dissertations
Due to their ability to reduce local flooding and protect receiving waters from intense stormwater pulses, stormwater detention ponds are commonly used stormwater management practices. Stormwater engineers construct ponds to moderate peak flow intensities and to allow residence time of the water within the pond to enhance nutrient removal prior to discharging into downstream ecosystems. Yet rarely, if ever, is the functionality of these ponds verified post-construction. This study aimed to compare hydrologic performance of two stormwater detention ponds located in coastal South Carolina to theoretical design plans by assessing a high resolution water budget. Inflow components of the water …
Well Water Quality In Southern Butler County, Pennsylvania, Scott Mayes
Well Water Quality In Southern Butler County, Pennsylvania, Scott Mayes
Electronic Theses and Dissertations
The increase in unconventional shale gas extraction in Pennsylvania has resulted in an increased number of groundwater contamination claims. Well water quality was investigated in southern Butler County, PA where 387 unconventional gas wells have been drilled since 2006. A total of 121 households participated in a survey and 238 well water samples were tested. Specific conductivity, pH, and dissolved oxygen in these samples were measured in the field and seven anion concentrations and thirty metal concentrations were measured in the lab. A subset of 91 water wells was also tested for light hydrocarbons (methane, ethane, ethylene, propylene, propane, butane). …
Characterization Of Groundwater Discharge In A Back Barrier Tidal Creek, Matthew L. Carter
Characterization Of Groundwater Discharge In A Back Barrier Tidal Creek, Matthew L. Carter
Electronic Theses and Dissertations
Groundwater discharge in the coastal environment is known to be a complex process. The driving mechanisms of groundwater discharge vary on spatial and temporal scales that can significantly impact coastal water chemistry and play a role in ecological zonation. Evolving combinations of observational and modeling approaches provide a basis to quantify groundwater discharge in a spatial and temporal sense. Here we employ a combination of geochemical (naturally occurring radon isotope) and geophysical (electrical resistivity) techniques to measure groundwater-surface water interactions along a back-barrier tidal creek. In addition to field measurements, a unique non-steady state radon mass balance equation was developed …
Identifying A Mechanism For An Infiltration Threshold From The Sunflower River, Ms To The Underlying Alluvial Aquifer, Austin Cole Patton
Identifying A Mechanism For An Infiltration Threshold From The Sunflower River, Ms To The Underlying Alluvial Aquifer, Austin Cole Patton
Electronic Theses and Dissertations
Long-term groundwater level and stream stage measurements at a USGS coupled groundwater stream-gaging station located on the Sunflower River in Sunflower, MS show an apparent stage-threshold for infiltration to the underlying alluvial aquifer. This site is located near the center of a large regional groundwater cone of depression in the Mississippi River Valley alluvial aquifer. The USGS well (termed well 3 in this study) was thought to be completed in the regional shallow aquifer, though often recording anomalously high water levels relative to other wells in the region. The purpose of this research was to identify the responsible mechanism for …
Transboundary Groundwater And Unsustainable Practices Of Water Governance In The Guarani Aquifer : The Case Of The Province Of Misiones., Paula Carolina Gomez 1974-
Transboundary Groundwater And Unsustainable Practices Of Water Governance In The Guarani Aquifer : The Case Of The Province Of Misiones., Paula Carolina Gomez 1974-
Electronic Theses and Dissertations
Recent changes in the governance of the Guarani Aquifer System - a transboundary groundwater resource in South America - reveal contradictory practices of water governance embedded in the individual politics and ideologies of sovereign states overlying the aquifer. Emerging practices of water marketization through the commodification of bottled groundwater at the provincial level in Misiones, Argentina, contest the current scale of transboundary groundwater governance, delimited by The Guarani Aquifer Agreement and its main principles of cooperation, equitable and reasonable utilization and the obligation not to harm - under the imperatives of the United Nations International Law Commission (UNILC) Law of …
Using Hydrologic Measurements To Investigate Free Phase Gas In A Maine Peatland, Usa, Christiaan Bon
Using Hydrologic Measurements To Investigate Free Phase Gas In A Maine Peatland, Usa, Christiaan Bon
Electronic Theses and Dissertations
Northern Peatlands cover more than 350 million ha (~3 percent of Earth’s surface) and are an important source of methane (CH4) and other biogenic gases contributing to climate change. Free phase gas (FPG) accumulation and episodic release has recently been recognized as an important mechanism for biogenic gas flux from peatlands. It is likely that gas production and groundwater flow are interconnected in peatlands: groundwater flow influences gas production by regulating geochemical conditions and nutrient supply available for methanogenesis while FPG influences groundwater flow through a reduction in peat permeability and by creating excess pore fluid pressures. Water samples collected …
Ozone And Gac Treatment Of A Central Florida Groundwater For Sulfide And Disinfectant By-Product Control, Tara Lamoureux
Ozone And Gac Treatment Of A Central Florida Groundwater For Sulfide And Disinfectant By-Product Control, Tara Lamoureux
Electronic Theses and Dissertations
This study evaluated the combination of ozone and granular activated carbon (GAC) treatment for the removal of sulfide and disinfection byproduct (DBP) precursors in drinking water at the pilot-scale. The research conducted was performed at the Auxiliary (Aux) and Main Water Treatment Plants (WTPs) in Sanford, Florida. Both WTPs rely upon groundwater sources that contain total sulfide ranging from 0.02 to 2.35 mg/L and total organic carbon (TOC) ranging from 0.61 to 2.20 mg/L. The Aux WTP’s raw water contains, on average, 88% more sulfide and 24% more TOC than the Main WTP. Haloacetic acids (HAA5) and total trihalomethanes (TTHMs) …
Evaluation Of An On-Line Device To Monitor Scale Formation In A Brackish Water Reverse Osmosis Membrane Process, Jennifer C. Roque
Evaluation Of An On-Line Device To Monitor Scale Formation In A Brackish Water Reverse Osmosis Membrane Process, Jennifer C. Roque
Electronic Theses and Dissertations
A modified two-element membrane pressure vessel assembly has been used to monitor process operational changes in a full-scale reverse osmosis (RO) water treatment plant (WTP). This study evaluated the effectiveness of the assembly as an on-line monitoring device intended to detect scale formation conditions when connected to an operating RO process train. This study was implemented to support the requirements of a larger University of Central Florida (UCF) research project ongoing at the city of Sarasota’s Public Works and Utilities (City) water treatment facilities located in Sarasota, Florida. During the time-frame of this study, the City was in the process …
A Study Of The Degradative Capabilities Of The Bimetallic System: Mg(Pd/C) As Applied In The Destruction Of Decafluoropentane, An Environmental Contaminant, Douglas Tomlin
Electronic Theses and Dissertations
Pollution from hydrofluorocarbons (HFC) poses a serious challenge to the environmental community. Released from industrial operations, they have contaminated both the atmosphere and groundwater and are considered persistent in both media.1 For over the past 20 years, the practice of synthesizing hydrofluorocarbons as alternatives to chlorofluorocarbons (CFC) has been conducted in an effort to reverse the effects of stratospheric ozone layer depletion. 2,3 However, in doing so these new fluorinated compounds exhibited an unexpected property as a potent global warming greenhouse gas (GHG) with radiative forcing potentials in the range of 100 to 10,000 equivalents greater than carbon dioxide.4 Conversely, …