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Articles 121 - 150 of 220
Full-Text Articles in Environmental Engineering
Co Florida 2012, A Moves-Based, Near-Road, Screening Model, Mark David Ritner
Co Florida 2012, A Moves-Based, Near-Road, Screening Model, Mark David Ritner
Electronic Theses and Dissertations
Citizens in the United States are fortunate to have an excellent system of roadways and the affluence with which to afford automobiles. The flexibility of travel on demand for most allows for a variety of lifestyles, assists with conducting business, and contributes to the feeling of freedom that most citizens enjoy. The current vehicle fleet, which is primarily powered by internal combustion engines burning fossil fuels, does however contribute to the deterioration of air quality. This effect is particularly significant in metropolitan areas. Motor vehicle exhausts contain several combustion bi-products that pose harmful effects to the environment and human health, …
Green Residential Stormwater Management Demonstration: An Integrated Stormwater Management And Graywater System To Reduce The Quantity And Improve The Quality Of Residential Water Discharges, Post Co Data Analysis, Ni-Bin Chang, Martin Wanielista, Manoj Chopra, Mike Hardin, Matthew Allen Goolsby
Green Residential Stormwater Management Demonstration: An Integrated Stormwater Management And Graywater System To Reduce The Quantity And Improve The Quality Of Residential Water Discharges, Post Co Data Analysis, Ni-Bin Chang, Martin Wanielista, Manoj Chopra, Mike Hardin, Matthew Allen Goolsby
BMP Trains Research and Publications
No abstract provided.
Nitrogen Transport And Transformation Beneath Stormwater Retention Basins In Karst Areas And Effectiveness Of Stormwater Best Management Practices For Reducing Nitrate Leaching To Ground Water In Marion County, Florida, Stormwater Academy
BMP Trains Research and Publications
No abstract provided.
Decolorization Of An Azo And Anthraquinone Textile Dye By A Mixture Of Living And Non-Living Trametes Versicolor Fungus, Christine M. Dykstra
Decolorization Of An Azo And Anthraquinone Textile Dye By A Mixture Of Living And Non-Living Trametes Versicolor Fungus, Christine M. Dykstra
HIM 1990-2015
Wastewater from the textile industry is difficult to treat effectively due to the prevalent use and wide variety of synthetic dyes that are resistant to conventional treatment methods. White-rot fungi, such as Trametes versicolor, have been found to be effective in decolorizing many of these synthetic dyes and current research is focusing on their application to wastewater treatment. Although numerous studies have been conducted on the ability of both living and nonliving Trametes versicolor to separately decolorize textile dyes, no studies were found to have investigated the use of a mixture of live and dead fungus for decolorization. This study …
Environmental Study Of Solid Waste Collection, Mousa Awad Maimoun
Environmental Study Of Solid Waste Collection, Mousa Awad Maimoun
Electronic Theses and Dissertations
The growing municipal solid waste generation rates have necessitated more efficient, optimized waste collection facilities. The majority of the US collection fleet is composed of diesel-fueled vehicles which contribute significant atmospheric emissions including greenhouse gases. In order to reduce emissions to the atmosphere, more collection agencies are investigating alternative fuel technologies such as natural gas, biofuels (bio-gas and bio-diesel), and hybrid electric technology. This research is an in-depth environmental analysis of potential alternative fuel technologies for waste collection vehicles. This study will evaluate the use of alternative fuels by waste collection vehicles. Lifecycle emissions, cost, fuel and energy consumption were …
Mass Conservation Analysis For The Lower St. Johns River Using Continuous And Discontinuous Galerkin Finite Element Methods, Lillie E. Thomas
Mass Conservation Analysis For The Lower St. Johns River Using Continuous And Discontinuous Galerkin Finite Element Methods, Lillie E. Thomas
Electronic Theses and Dissertations
This thesis provides a mass conservation analysis of the Lower St. Johns River for the purpose of providing basis for future salinity transport modeling. The analysis provides an assessment of the continuous (CG) and discontinuous (DG) Galerkin finite element methods with respect to their mass conservation properties. The following thesis also presents a rigorous literature review pertaining to salinity transport in the Lower St. Johns River, from which this effort generates the data used to initialize and validate numerical simulations. Two research questions are posed and studied in this thesis: can a DG-based modeling approach produce mass conservative numerical solutions; …
A 2009 Mobile Source Emissions Inventory Of The University Of Central Florida, Johanna Marie Clifford
A 2009 Mobile Source Emissions Inventory Of The University Of Central Florida, Johanna Marie Clifford
Electronic Theses and Dissertations
This thesis reports on the results of a mobile source emissions inventory for the University of Central Florida (UCF). For a large urban university, the majority of volatile organic compounds (VOC), oxides of nitrogen (NOx), and carbon dioxide (CO2) emissions come from onroad sources: personal vehicles and campus shuttles carrying students, faculty, staff, and administrators to and from the university, as well as university business trips. In addition to emissions from daily commutes, non-road equipment such as lawnmowers, leaf blowers, small maintenance vehicles, and other such equipment utilized on campus contributes to a significant portion to the total emissions from …
Innovative Pollutant Load Monitoring, Eric Gurr
Innovative Pollutant Load Monitoring, Eric Gurr
Electronic Theses and Dissertations
Modern streamflow measuring equipment, water quality sampling techniques and a better understanding of pollutant washoff are continuously being developed as today's society is in critical need of improving water management, minimizing developmental impacts and preventing environmental hazards. In particular, the study of the spatial, temporal and volumetric characteristics of annual pollutant loading caused by variations in precipitation, land use and other anthropogenic factors is of great significance due to their relation to future global water demands. The research presented here falls in three parts. In the first part of the dissertation, an acoustical Doppler velocity profiler installed in a submerged …
Viability Study Of A Residential Integrated Stormwater, Graywater, And Wastewater Treatment System At Florida's Showcase Green Envirohome, Matthew Allen Goolsby
Viability Study Of A Residential Integrated Stormwater, Graywater, And Wastewater Treatment System At Florida's Showcase Green Envirohome, Matthew Allen Goolsby
Electronic Theses and Dissertations
The subject of water scarcity and the rate of water consumption has become popular topics over the last few decades. It is possible that society may consume or contaminate much of the remaining readily available water if there is not a paradigm shift. This deep rooted concern has prompted investigations to identify alternative water use and treatment methods. Within this report, information is presented from the use of innovative water harvesting and on-site sewage treatment and disposal systems (OSTDS) at Florida’s Showcase Green Envirohome (FSGE.net), while also addressing low impact development (LID) practices. FSGE is a residential home that demonstrates …
2008 Emissions Inventory Of Central Florida, Jessica Leigh Ross
2008 Emissions Inventory Of Central Florida, Jessica Leigh Ross
Electronic Theses and Dissertations
An emissions inventory of VOCs, NOx, and CO2 was conducted for three central Florida counties – Orange, Seminole, and Osceola (OSO) – for calendar year 2008. The inventory utilized three programs: MOBILE6, NONROAD2005, and EDMS (Emissions and Dispersion Modeling System) to model on‐road mobile, non‐road mobile, and airport emissions, respectively. Remaining point and area source data was estimated from the Florida Department of Environmental Protection (FDEP) and the U.S. Environmental Protection Agency’s (U.S. EPA) 2008 emissions inventory. The previous OSO emissions inventory was done in 2002 and in the six years between inventories, there have been changes in population, commerce, …
Rule-Based Decision Support System For Sensor Deployment In Drinking Water Networks, Natthaphon Prapinpongsanone
Rule-Based Decision Support System For Sensor Deployment In Drinking Water Networks, Natthaphon Prapinpongsanone
Electronic Theses and Dissertations
Drinking water distribution systems are inherently vulnerable to malicious contaminant events with environmental health concerns such as total trihalomethanes (TTHMs), lead, and chlorine residual. In response to the needs for long-term monitoring, one of the most significant challenges currently facing the water industry is to investigate the sensor placement strategies with modern concepts of and approaches to risk management. This study develops a Rule-based Decision Support System (RBDSS) to generate sensor deployment strategies with no computational burden as we oftentimes encountered via large-scale optimization analyses. Three rules were derived to address the efficacy and efficiency characteristics and they include: 1) …
Use Of Vegetative Mulch As Daily And Intermediate Landfill Cover, Assal Edwar Haddad
Use Of Vegetative Mulch As Daily And Intermediate Landfill Cover, Assal Edwar Haddad
Electronic Theses and Dissertations
Management of yard waste is a significant challenge in the US, where in 2008 13.2% of the 250 million tons of municipal solid waste (MSW) was reported to be yard waste. This study describes research conducted in the laboratory and field to examine the application of vegetative mulch as daily and intermediate landfill cover. Mulch was found to exhibit stronger physical properties than soil, leading to a more stable landfill slope. Compaction of mulch was found to be significantly greater than soil, potentially resulting in airspace recovery. Degradation of mulch produced a soil-like material; degradation resulted in lower physical strength …
Tangerine Avenue Retrofitting Project, Ni-Bin Chang, Martin Wanielista
Tangerine Avenue Retrofitting Project, Ni-Bin Chang, Martin Wanielista
BMP Trains Research and Publications
No abstract provided.
Poppleton Creek Wet Detention Pond, Stormwater Academy
Poppleton Creek Wet Detention Pond, Stormwater Academy
BMP Trains Research and Publications
No abstract provided.
Baffle Box Effectiveness Monitoring Report, Stormwater Academy
Baffle Box Effectiveness Monitoring Report, Stormwater Academy
BMP Trains Research and Publications
No abstract provided.
Comparison Of Traditional Standard Drainfield With Innovative B&G Treatment Bed For Nutrient Removal From Septic Tank Wastewater, Fahim Hossain
Comparison Of Traditional Standard Drainfield With Innovative B&G Treatment Bed For Nutrient Removal From Septic Tank Wastewater, Fahim Hossain
Electronic Theses and Dissertations
Nowadays people are more alert about conservation of water and water scarcity. The amount of usable water is decreasing due to unavailability of pure water for day to day use. Both surface and groundwater is contaminated by untreated wastewater discharged from improper onsite wastewater treatment system, nutrient laden agricultural runoff and increasing use of fertilizer in fields. This elevated nutrient level is increasing the maintenance and operation cost of water treatment plant. So it is an important task to remove those nutrients from wastewater and other water bodies by applying environmental friendly process. In the USA, about 25% homes are …
Control Of Hydrogen Sulfide Emissionsusing Autotrophic Denitrificationlandfill Biocovers, Daoroong Sungthong
Control Of Hydrogen Sulfide Emissionsusing Autotrophic Denitrificationlandfill Biocovers, Daoroong Sungthong
Electronic Theses and Dissertations
Hydrogen sulfide (H2S), a major odorous component emitted from construction and demolition debris landfills, has received increasing attention. Besides its unpleasant odor, long-term exposure to a very low concentration of H2S can cause a public health issue. Although cover materials such as soil and compost are recommended to be used routinely to control an odor problem from the landfills, the problem still remains. Autotrophic denitrification may have environmental applications including treatment of water, groundwater, wastewater or gaseous streams contaminated with sulfur and/or nitrogen compounds. However, there have been no studies reported in the literature on H2S removal using autotrophic denitrification …
Assessment Of Aquifer Storage And Recovery Impact On Phosphorus Stability In Lake Sediment, Sha Liu
Assessment Of Aquifer Storage And Recovery Impact On Phosphorus Stability In Lake Sediment, Sha Liu
Electronic Theses and Dissertations
Lake Okeechobee, the second largest natural freshwater lake in the United States, had experienced a historical drought in 2007-2008 and the inflow to Lake Okeechobee has been reduced by 40% of the average daily mean between warm phase and cold phase due to the impact of Atlantic Multidecadal Oscillation in the past six decades. To cope with this water resources management problem, the US Army Corps of Engineers (USACE) proposed the largest national implementation plan of aquifer storage and recovery (ASR) project in the Kissimmee River Basin. Routine operation of ASR will deliver recovered water from ASR wells into the …
Evaluation Of Oxidized Media Filtration Processes For The Treatment Of Hydrogen Sulfide In Groundwater, Vito Trupiano
Evaluation Of Oxidized Media Filtration Processes For The Treatment Of Hydrogen Sulfide In Groundwater, Vito Trupiano
Electronic Theses and Dissertations
This study evaluated alternative sulfide treatment processes for potable water systems that rely on groundwater supplies. Research for this study was conducted at the Imperial Lakes (IL) and Turner Road (TR) water treatment plants (WTPs) in Polk County, Florida. These WTPs are in the process of refurbishment and expansion, and will require the installation of a new groundwater well. The IL and TR WTPs both rely upon groundwater sources that contain total sulfide at concentrations ranging from 1.4 to 2.6 mg/L. Sulfide is a concern because if left untreated it can impact finished water quality, corrosivity, create undesirable taste and …
Analysis Of The Florida's Showcase Green Envirohome Water/Wastewater Systems And Development Of A Cost-Benefit Green Roof Optimization Model, Brian Rivera
Electronic Theses and Dissertations
The Florida Showcase Green Envirohome (FSGE) incorporates many green technologies. FSGE is built to meet or exceed 12 green building guidelines and obtain 8 green building certificates. The two-story 3292 ft2 home is a "Near Zero-Loss Home", "Near Zero-Energy Home", "Near Zero-Runoff Home", and "Near Zero-Maintenance Home". It is spawned from the consumer-driven necessity to build a home resistant to hurricanes, tornadoes, floods, fire, mold, termites, impacts, and even earthquakes given up to 500% increase in insurance premiums in natural disaster zones, the dwindling flexibility and coverage of insurance policies, and rising energy, water and maintenance costs (FSGE 2008). The …
Stormwater Irrigation Volume Iii: Transport Of The Cyanotoxin Microcystin In Groundwater Beneath Stormwater Ponds: Results Of Soil Column Experiments, Martin Wanielista
Stormwater Irrigation Volume Iii: Transport Of The Cyanotoxin Microcystin In Groundwater Beneath Stormwater Ponds: Results Of Soil Column Experiments, Martin Wanielista
BMP Trains Research and Publications
As the demand for fresh water increases in central Florida to meet both public supply and irrigation needs, stormwater is increasingly being managed as a resource to help offset possible future declines in aquifer water levels. Water quality is an important consideration when using stormwater for recharge or harvesting. A constituent of recent concern is cyanobacteria (popularly known as blue-green algae) because some of these can produce toxins (cyanotoxins) that are detrimental to animal and human health. Microcystins are the most commonly found type of cyanotoxin in Florida and have been detected in a variety of rivers, natural lakes, and …
Post Treatment Alternatives For Stabilizing Desalinated Water, Susaye Douglas
Post Treatment Alternatives For Stabilizing Desalinated Water, Susaye Douglas
Electronic Theses and Dissertations
The use of brackish water and seawater desalination for augmenting potable water supplies has focused primarily on pre-treatment, process optimization, energy efficiency, and concentrate management. Much less has been documented regarding the impact of post-treatment requirements with respect to distribution system. The goals of this study were to review current literature on post-treatment of permeate water, use survey questionnaires to gather information on post-treatment water quality characteristics, gather operation information, review general capital and maintenance cost, and identify appropriate "lessons learned" with regards to post-treatment from water purveyors participating in the Project. A workshop was organized where experts from across …
Holiday Shores Stormwater Retrofitting Project, Stormwater Academy
Holiday Shores Stormwater Retrofitting Project, Stormwater Academy
BMP Trains Research and Publications
No abstract provided.
Nutrient And Pathogen Removal In A Subsurface Upflow Wetland System Using Green Sorption Media, Zhemin Xuan
Nutrient And Pathogen Removal In A Subsurface Upflow Wetland System Using Green Sorption Media, Zhemin Xuan
Electronic Theses and Dissertations
Due to environmental health and nutrient impact concerns, the conventional on-site sewage collection, treatment, and disposal systems are no longer able to meet the nutrient reduction requirements for wastewater effluent and may represent a large fraction of pollutant loads. The loads include not only nitrogen (N) and phosphorus (P), but also pathogens such as fecal coliform and E. coli which indicate the presence of other disease-causing bacteria flowing into aquatic system that adversely affect public health. A subsurface upflow wetland, which is an effective small-scale wastewater treatment system with low energy and maintenance requirements and operational costs, fits the current …
Determining Emissions From Landfills And Creating Odor Buffer Distances, Nicholas Guarrieloo
Determining Emissions From Landfills And Creating Odor Buffer Distances, Nicholas Guarrieloo
Electronic Theses and Dissertations
With population growing every year, more and more people are looking for places to live. This can lead to construction of houses near and around landfills. As homes get closer to landfills, the odors these landfills produce become more of a problem, and lead to an increase in odor complaints. Modeling these odors and recommending odor buffer distances will help determine limits on how close to landfills new homes should be allowed. This should help reduce future odor complaints. To solve this problem one must accurately estimate odorous gas emissions from the landfill. Often odors can be indicated by methane …
Characterizing Spontaneous Fires In Landfills, Shadi Moqbel
Characterizing Spontaneous Fires In Landfills, Shadi Moqbel
Electronic Theses and Dissertations
Landfill fires are relatively common incidents that landfill operators encounter which have great impact on landfill structure and the environment. According to a U.S. Fire Administration report in 2001, an average of 8,300 landfill fires occurs each year in the United States, most of them in the spring and summer months. Subsurface spontaneous fires are considered the most dangerous and difficult to detect and extinguish among landfill fires. Few studies have been conducted on spontaneous fires in landfills. Information regarding the thermal behavior of solid waste is not available nor have measurements been made to evaluate spontaneous ignition of solid …
A Study Of Central Florida Nonroad Voc And Nos Emissions And Potential Actions To Reduce Emissions, Michael Radford
A Study Of Central Florida Nonroad Voc And Nos Emissions And Potential Actions To Reduce Emissions, Michael Radford
Electronic Theses and Dissertations
Ground-level ozone is harmful to the human respiratory system, as well as the environment. The national EPA 8-hour ozone standard for ground-level ozone was reduced from 85 parts per billion (ppb) to 75 ppb in 2008, and trends from previous years show that some of the counties in Central Florida could be in danger of violation. Violation means "non attainment" status; in which the county is ordered by EPA to develop specific implementation plans to reduce its emissions. The objective of this study was to compile an emissions inventory of volatile organic compounds (VOCs) and nitrogen oxides (NOx) from nonroad …
Modeling Microbiological And Chemical Processes In Municipal Solid Waste Bioreactor: Development And Applications Of A Three-Pha, Nitin Gawande
Modeling Microbiological And Chemical Processes In Municipal Solid Waste Bioreactor: Development And Applications Of A Three-Pha, Nitin Gawande
Electronic Theses and Dissertations
The numerical computer models that simulate municipal solid waste (MSW) bioreactor landfills have mainly two components--a biodegradation process module and a multi-phase flow module. The biodegradation model describes the chemical and microbiological processes of solid waste biodegradation. The models available to date include predefined solid waste biodegradation reactions and participating species. In a bioreactor landfill several processes, such as anaerobic and aerobic biodegradation, nitrogen and sulfate cycling, precipitation and dissolution of metals, and adsorption and gasification of various anthropogenic organic compounds, occur simultaneously. These processes may involve reactions of several species and the available biochemical models for solid waste biodegradation …
A Comparative Analysis Of Greenroof Designs Including Depth Of Media, Drainage Layer Materials, And Pollution Control Mediaa, Martin Wanielista, Michael Hardin
A Comparative Analysis Of Greenroof Designs Including Depth Of Media, Drainage Layer Materials, And Pollution Control Mediaa, Martin Wanielista, Michael Hardin
BMP Trains Research and Publications
No abstract provided.
Evaluation Of The Performance Efficiency Of The New York Avenue Exfiltration Facility, Stormwater Academy
Evaluation Of The Performance Efficiency Of The New York Avenue Exfiltration Facility, Stormwater Academy
BMP Trains Research and Publications
No abstract provided.