Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 5 of 5
Full-Text Articles in Entire DC Network
Quantifying Permafrost Extent, Condition, And Degradation Rates At Department Of Defense Installations In The Arctic, Christopher A.J. Edlund
Quantifying Permafrost Extent, Condition, And Degradation Rates At Department Of Defense Installations In The Arctic, Christopher A.J. Edlund
Theses and Dissertations
The DoD is planning over $500M in military construction on Eielson Air Force Base (AFB) within the next three years. This construction program will expand the footprint of facilities and change parts of the storm water management scheme, which may have second order effects on the underlying permafrost layer. These changes in permafrost will drive engineering decision making at local and regional levels, and help shape the overall strategy for military readiness in the Arctic. Little site-specific knowledge exists on the human caused effects to permafrost at this location. In 2016, the permafrost degradation rates at Eielson AFB were modeled …
A Method To Determine The Viability Of Photovoltaic Systems In Various Climate Regions, Joseph A. Applebee
A Method To Determine The Viability Of Photovoltaic Systems In Various Climate Regions, Joseph A. Applebee
Theses and Dissertations
The purpose of this study is to manufacture and disseminate 37 photovoltaic test systems which will be located at various United States Air Force installations worldwide. The Air Force's goals in renewable energy are to determine the potential for systems to aid in promoting resiliency for an installation's energy demands. The test systems are designed to collect climate and power production data from each test site and associated photovoltaic cells. The overall goal of the test system data collection is to determine the correlation between power output of photovoltaic panels and the associated geographic region climate classification. This study does …
Radiological Decontamination In The Urban Environment Utilizing An Irreversible Wash-Aid Recovery System, Keith A. Sanders
Radiological Decontamination In The Urban Environment Utilizing An Irreversible Wash-Aid Recovery System, Keith A. Sanders
Theses and Dissertations
The radioactive fallout from the Fukushima Daiichi nuclear reactors accident and the ongoing threat of nuclear or radioactive terrorism have forced the need for urban radiological decontamination into the forefront. Many of the established decontamination techniques are not ideally suited for the urban milieu. One of the keys to maximize the effectiveness of long-term remediation and recovery in the urban environment is immediate mitigation within a few days of the incident and before a rain event. The Integrated Wash-Aid, Treatment, and Emergency Reuse System (IWATERS) provides a potentially safe and effective method for early responders and remediation teams to perform …
Application Of Ultraviolet Light Emitting Diodes For The Advanced Oxidation Of Guar Gum, Andrew W. Davenport
Application Of Ultraviolet Light Emitting Diodes For The Advanced Oxidation Of Guar Gum, Andrew W. Davenport
Theses and Dissertations
Guar Gum (GG) is one of the problematic water pollutants connected to hydraulic fracturing. There is a pressing need to investigate appropriate unit operations that can be employed to protect the aquatic environment. This study investigated the use of light-emitting diodes (LEDs) in the advanced oxidation process (AOP) of GG. Chemical oxygen demand (COD) removal provided mixed results, depending on the concentration of hydrogen peroxide (H2O2) in solution, and was between (0-95%) for H2O2-to-GG ratios between 7.0 and 176.3 g H2O2/g GG. COD removal was greatest at the …
Removal Of Perfluorinated Compounds From Post-Emergency Wastewater By Advanced Oxidation Process And Granular Activated Carbon Adsorption, Sean M. Dyson
Theses and Dissertations
This research presents a novel approach to remove per- and polyfluoroalkyl substances (PFAS) from aqueous film-forming foam (AFFF) impacted wastewater with high (~100 mg/L) total organic carbon (TOC) concentrations. A treatment-train process was investigated involving an ultraviolet (UV)/hydrogen peroxide (H2O2) advanced oxidation process (AOP) followed by filtration using Calgon Filtrasorb® 600 (F600) granular activated carbon (GAC). UV/H2O2 AOP experiments were conducted to determine whether TOC concentrations could be reduced as a pre-treatment step before filtering the water with F600-GAC. Results showed using UV/H2O2 AOP reduced TOC in solution by > 98% (< 2 mg/L down from 99.1 mg/L). Reducing TOC concentrations was achieved by using a 250 mg/L H2O2 …