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Articles 1711 - 1740 of 2637
Full-Text Articles in Civil and Environmental Engineering
Ohio River Denial As A Transportation Corridor And Its Economic Impacts On The Energy Industry, Caglar Utku Guler
Ohio River Denial As A Transportation Corridor And Its Economic Impacts On The Energy Industry, Caglar Utku Guler
Theses and Dissertations
What if the Ohio River is disrupted or denied partially or completely as a transportation corridor? A disruption may be either a natural or man-made disaster or a planned outage on the river’s lock and dam structures. Recent history is full of water transport disruption events having significant economic effects on the waterside industries. To assess coal-based economic impacts, we developed a network flow model to represent waterside coal-fired power plants situated along the Ohio River, their respective coal supplying mines, and the various transportation modes that connect them. We show that significant transportation-centric insights can be derived by using …
Demonstrating Sustainable Farm Management Systems. Final Report For Rcg05-Ord13, Tara Slaven, Francis Bright, Jodie Hawley, Joe Sherrard
Demonstrating Sustainable Farm Management Systems. Final Report For Rcg05-Ord13, Tara Slaven, Francis Bright, Jodie Hawley, Joe Sherrard
Natural resources research reports
The Ord River Irrigation Area (ORIA) has a 'flow through' irrigation system. That is, irrigation water is diverted from Lake Kununurra and any waste water from the irrigation system and farms flows directly back into the river downstream. This means that any sediment, nutrient or chemicals in tailwater from farms flows straight into the river.
The Ord Land and Water Management Plan 2000 specifies goals to improve surface water quality. The goals are to reduce the load of chemical and nutrient contamination and sediment in tailwater by 40 per cent.
The aim of this project was to develop and demonstrate …
Sustainable Development Extension Plan (Sudex): Community Mobilization Through Proactive Participation And Synergistic Alliance To Alliviate Poverty And Achieve Sustainable Self Sufficiency, Stephen Forbes
Open Access Theses & Dissertations
This Dissertation describes a sustainable development extension plan (Sudex Plan) to help communities in developing countries achieve Goal 1 of the United Nation's Millennium Development Goals (MDG). Goal 1 focuses on reducing poverty and hunger by 50% by the year 2015, but all the MDG are interrelated and one can not be achieved without considering the others, and to attain any is an empty accomplishment without ways to ensure that they can be sustained and continuously improved with the means to pass on the information, knowledge and lessons learned from community to community, generation to generation. The Sudex Plan is …
Treatment Of Ro Concentrate Using Vsep Technology, Guillermo Guadalupe Delgado
Treatment Of Ro Concentrate Using Vsep Technology, Guillermo Guadalupe Delgado
Open Access Theses & Dissertations
The city of El Paso has the largest inland brackish desalination plant in the world. The Kay Bailey Hutchison (KBH) Desalting plant produces 15 million of permeate water every day. Due to the excellent quality of the water, the permeate water is blended with brackish water producing a final volume of 27.5 million gallons of water every day. With an average recovery rate of 80%, the KBH plant produces an average of 3 million gallons of concentrated brackish water that is disposed of via injection wells 23 miles from the plant.
Conventional reverse osmosis (RO) systems are not capable of …
Development Of Measurement And Modeling Techniques To Quantify Atmospheric Deposition Of Persistent, Bioaccumulative And Toxic Chemicals In The Great Lakes, Mark D. Rowe
Dissertations, Master's Theses and Master's Reports - Open
Measurement and modeling techniques were developed to improve over-water gaseous air-water exchange measurements for persistent bioaccumulative and toxic chemicals (PBTs). Analytical methods were applied to atmospheric measurements of hexachlorobenzene (HCB), polychlorinated biphenyls (PCBs), and polybrominated diphenyl ethers (PBDEs). Additionally, the sampling and analytical methods are well suited to study semivolatile organic compounds (SOCs) in air with applications related to secondary organic aerosol formation, urban, and indoor air quality.
A novel gas-phase cleanup method is described for use with thermal desorption methods for analysis of atmospheric SOCs using multicapillary denuders. The cleanup selectively removed hydrogen-bonding chemicals from samples, including much of …
Modeling Integrated Decisions For A Municipal Water System With Recourse And Uncertainties: Amman, Jordan, David E. Rosenberg, Jay Lund
Modeling Integrated Decisions For A Municipal Water System With Recourse And Uncertainties: Amman, Jordan, David E. Rosenberg, Jay Lund
Civil and Environmental Engineering Faculty Publications
Stochastic mixed-integer optimization is used to identify a portfolio of long- and short-term supply and conservation actions for a municipal water system to cost-effectively accommodate a distribution of water shortages. Alternative robust, grey-number, and best/worst case formulations systematically explore implications of uncertainties in action costs, life spans, water volumes gained or saved, shortage levels, and shortage probabilities. A detailed example for Amman, Jordan considers 23 potential actions. Results show: (1) remarkable consistency occurs across the different modeling approaches. (2) Conserving water—reducing leakage and targeting select customers to install water efficient appliances—plays an important and growing role over time. (3) A …
Soil Moisture And Water Stage Estimation Using Precipitation Radar, Sumit Puri
Soil Moisture And Water Stage Estimation Using Precipitation Radar, Sumit Puri
UNLV Theses, Dissertations, Professional Papers, and Capstones
In south-western United States, soil moisture data is important for drought studies in the region which is experiencing a drought for many years, whereas in South Florida, water stage data is required by hydrologists to monitor the hydrological flow in wetlands. Soil moisture data and water stage data are not sufficiently available due to sparse monitoring stations. Installation of dense measuring stations over an extended area is costly and labor intensive. Therefore, there is a need to develop an alternative method of measuring soil moisture and water stage. Microwave remote sensing has proven to be a useful tool in the …
2008 Fall Engr333 Project Final Report, 2008 Fall Engr333
2008 Fall Engr333 Project Final Report, 2008 Fall Engr333
ENGR 333
The Calvin College Engineering 333 class of 2008 was challenged with the question, “What would it take to implement an energy efficiency fund at Calvin?” Before addressing this question, another had to be asked: “What is an energy efficiency fund?” An energy efficiency fund is a revolving fund which takes seed money from donations, tuition, or grants and invests it into projects that save energy. Energy cost savings from the projects are routed back to the fund to help it grow and enable it to finance future projects. In order to begin this, the senior engineering students began organizing and …
Green Roofs For A Green Town: Possibilities Of Green Roof Implementation In The Town Of Normal, Lindsey Sihau, '09
Green Roofs For A Green Town: Possibilities Of Green Roof Implementation In The Town Of Normal, Lindsey Sihau, '09
Outstanding Senior Seminar Papers
Green roofs have been growing in popularity throughout the world. Scientists have been studying them since the 1980’s. This research project reviews the literature regarding both the benefits and barriers to green roof construction and management. Policies around the nation are then examined and analyzed. Suggestions are made regarding possible additions to the local Stormwater Management Policy that would emphasize the importance of sustainable building techniques such as green roofs, and hopefully offer incentive to their implementation.
Mesoscale Dispersive Flux In The Lower Reaches Of The Elizabeth River Estuary, Byron Danrich Tracy
Mesoscale Dispersive Flux In The Lower Reaches Of The Elizabeth River Estuary, Byron Danrich Tracy
Civil & Environmental Engineering Theses & Dissertations
Congress has mandated under Section 303(d) of the Clean Water Act that Total Maximum Daily Loads (TMDL's) be established for impaired water bodies to further identify and regulate their waste assimilative capacity. To establish a TMDL, the sources of waste loading or pollutants must be identified, and a method of determining how each should be limited or removed must be developed. Using a water quality model is a typical method for determining these limits, and since new or changed limits will likely impact local businesses and government budgets, the model must be accurate. For most tidal systems larger than small …
2008 Fall Engr333 Project Assignment, Matthew K. Heun
2008 Fall Engr333 Project Assignment, Matthew K. Heun
ENGR 333
The Fall 2008 semester ENGR333 project assessed the feasibility of a Green Revolving Fund for Calvin College. I asked the students “What would it take to implement a Calvin Energy Efficiency Fund (CEEF)?”
The project emerged from the work of the previous year’s students who uncovered the concept of green revolving funds.
Immediately after the Fall 2008 semester, I went on sabbatical to South Africa for all of 2009. While I was away, the Calvin administration established the Calvin Energy Recovery Fund (CERF). Over the next decade, CERF saved hundreds of thousands of dollars in energy costs and was …
Nebraska Water Map
Nebraska Water Center: Administrative Materials
Nebraska Water is a full-color, 24"x36" poster, that is appropriate for educational use. The information presented on the maps is the best available as of July 2008. The content and level of detail of each map is based on available space and map scale.
College Of Engineering Senior Design Competition Spring 2008, University Of Nevada, Las Vegas
College Of Engineering Senior Design Competition Spring 2008, University Of Nevada, Las Vegas
Fred and Harriet Cox Senior Design Competition Projects
Part of every UNLV engineering student’s academic experience, the senior design project stimulates engineering innovation and entrepreneurship. Each student in their senior year chooses, plans, designs, and prototypes a product in this required element of the curriculum. A capstone to the student’s educational career, the senior design project encourages the student to use everything learned in the engineering program to create a practical, real world solution to an engineering challenge.
The senior design competition helps to focus the senior students in increasing the quality and potential for commercial application for their design projects. Judges from local industry evaluate the projects …
Brunswick Me: De-Militarizing The Bnas, Anne Holland, Brett Richardson, Richard Barringer
Brunswick Me: De-Militarizing The Bnas, Anne Holland, Brett Richardson, Richard Barringer
Planning
Closure of the Brunswick Naval Air Station in 2011 will have profound economic impacts on the entire mid-coast Maine region of Maine, with an estimated loss of 6,500 jobs and $330 million annual income. Throughout the Base Realignment and Closure process, Brunswick, the region, and the State of Maine followed federal rules and developed the federally-funded Brunswick Local Redevelopment Authority (BLRA) to plan for reuse of the 3300 acre base. In its planning process, the BLRA adhered to a number of well thought-out Guiding Principles, including the use of extensive public participation and the consideration of “smart growth” principles and …
Sustainable Portland: Implementation Series 1, New England Environmental Finance Center
Sustainable Portland: Implementation Series 1, New England Environmental Finance Center
Climate Change
When the Sustainable Portland Task Force Report was released in November 2007, under the leadership of Mayor Jim Cohen, Portland Councilor Kevin Donoghue had the idea that students at the Muskie School of Public Service might be able to help implement recommendations from the report. It may have helped that Kevin was himself a graduate of the Community Planning and Development Master’s program at the Muskie School, but it was a good idea nevertheless. He approached Professor Sam Merrill in the CPD program, who spoke with the new Mayor Ed Suslovic about a possible partnership between the City and the …
The History Of The Unl Water Center From 1964, Water Center, School Of Natural Resources
The History Of The Unl Water Center From 1964, Water Center, School Of Natural Resources
Nebraska Water Center: Administrative Materials
Water is an integral part of Nebraska’s economy and well being in a state that depends on an adequate supply for all uses, including agricultural, municipal, industrial, recreational and wildlife habitat.
Nebraska is fortunate with regard to its water supply, having tremendous groundwater reserves which are estimated to be in excess of two billion acrefeet (an acre-foot being enough water to cover one acre of land with a foot of water, or approximately 325,000 gallons), combined with an estimated annual precipitation of 86 million acre-feet and annual average surface water inflows of 1.7 million acre-feet, give the state adequate supplies …
Screening The Phytoremediation Potential Of Native Plants Growing On Mine Tailings In Arizona, Usa, Md Nazmul Haque
Screening The Phytoremediation Potential Of Native Plants Growing On Mine Tailings In Arizona, Usa, Md Nazmul Haque
Open Access Theses & Dissertations
Mining companies have been playing an important role for the utilization of the Earth's natural resources for the prosperity of human society. However, the mining of resources has generated solid wastes called tailings that have become a serious environmental threat worldwide. Technologies such as soil caping have been used to remediate the problem. Nevertheless, the remediation of mine tailings using conventional technologies is costly and environmentally unpleasant. Since the last few decades, a plant based technology known as phytoremediation has appeared as a promising alternative. Several plant species have demonstrated to have phytoremediation capabilities; though, best results have been obtained …
Catalytic Wet Air Oxidation Of Mono Azo Dye Orange Ii: Catalyst Selection, Reaction Kinetics, And Modeling, Pinar Ozdural
Catalytic Wet Air Oxidation Of Mono Azo Dye Orange Ii: Catalyst Selection, Reaction Kinetics, And Modeling, Pinar Ozdural
Civil & Environmental Engineering Theses & Dissertations
Wastewaters generated as byproducts of dyeing processes are not treatable with conventional methods. It has been estimated that among the 900,000 tons of different dyes produced annually in the world, approximately 10–15% are lost in wastewater streams during manufacturing and processing operations. Once in rivers and streams, dyes cause major problems, such as reducing light penetration, or displaying toxic effects on aquatic life. Therefore, it is essential that dyes are removed from wastewaters before being discharged into the environment.
This study focuses on the catalytic wet air oxidation (CWAO) of Orange II, a mono azo dye used in large amounts …
2007 Fall Engr333/Biol354 Project Final Report, 2007 Fall Engr333, 2007 Fall Biol354
2007 Fall Engr333/Biol354 Project Final Report, 2007 Fall Engr333, 2007 Fall Biol354
ENGR 333
The students of Calvin College’s Engineering 333 and Biology 354 classes were given the task of determining “What would it take to make Calvin College Carbon Neutral?” At first glance, it would not appear that classes on Advanced Thermal System Design and Investigations in Plant Ecology would have much in common. However, the biology and engineering students comprising these classes banded together to tackle the problem. Coming to a satisfactory conclusion would require:
- Creating an inventory of Green House Gas (GHG) emissions and sequestration potential
- Coming up with detailed solutions to achieve Carbon Neutrality
- Working out a practical schedule to …
College Of Engineering Senior Design Competition Fall 2007, University Of Nevada, Las Vegas
College Of Engineering Senior Design Competition Fall 2007, University Of Nevada, Las Vegas
Fred and Harriet Cox Senior Design Competition Projects
Part of every UNLV engineering student’s academic experience, the senior design project stimulates engineering innovation and entrepreneurship. Each student in their senior year chooses, plans, designs, and prototypes a product in this required element of the curriculum. A capstone to the student’s educational career, the senior design project encourages the student to use everything learned in the engineering program to create a practical, real world solution to an engineering challenge.
The senior design competition helps to focus the senior students in increasing the quality and potential for commercial application for their design projects. Judges from local industry evaluate the projects …
2007 Fall Engr333/Biol354 Project Solutions Poster, 2007 Fall Engr333, 2007 Fall Biol354
2007 Fall Engr333/Biol354 Project Solutions Poster, 2007 Fall Engr333, 2007 Fall Biol354
ENGR 333
A carbon footprint is term which refers to the net amount of greenhouse gases produced to directly or indirectly by human activities and is usually expressed in terms of metric tons of carbon dioxide. The Calvin community places a strong emphasis on practicing good stewardship, including stewardship of Creation. Reducing Calvin’s carbon footprint is crucial because carbon dioxide is a major greenhouse gas and contributes heavily to global climate change. In a previous portion of this project, the carbon footprint of Calvin College was calculated to be about 66,400 MTCE (Metric Tons Carbon dioxide Emitted). The goal of this portion …
2007 Fall Engr333/Biol354 Project Footprint Poster, 2007 Fall Engr333, 2007 Fall Biol354
2007 Fall Engr333/Biol354 Project Footprint Poster, 2007 Fall Engr333, 2007 Fall Biol354
ENGR 333
The students of Calvin College’s Engineering 333 and Biology 354 classes were given the task of determining “What would it take to make Calvin College Carbon Neutral?” At first glance, it would not appear that classes on Advanced Thermal System Design and Investigations in Plant Ecology would have much in common. However, the biology and engineering students comprising these classes banded together to tackle the problem. Coming to a satisfactory conclusion would require: Creating an inventory of Green House Gas (GHG) emissions and sequestration potential Coming up with detailed solutions to achieve Carbon Neutrality Working out a practical schedule to …
2007 Engr333/Biol354 Project Assignment, Matthew K. Heun
2007 Engr333/Biol354 Project Assignment, Matthew K. Heun
ENGR 333
The Fall 2007 semester ENGR333 project involved a collaboration with students in BIOL354, taught by my colleague Dave Warners. We asked our students “What would it take to make Calvin College carbon neutral?”
This project resulted in the first-ever carbon dioxide emissions and sequestration assessment of Calvin College, attached below.
The student presenters animated the pie charts, and an audible gasp filled the hall when the imbalance between carbon emissions and carbon sequestration became clear.
The students also studied potential routes to carbon neutrality, one of which was a green revolving fund.
This class project resulted in a co-authored publication …
Estimating Business And Residential Water Supply Interruption Losses From Catastrophic Events, Nicholas Brozovic, David L. Sunding, David Zilberman
Estimating Business And Residential Water Supply Interruption Losses From Catastrophic Events, Nicholas Brozovic, David L. Sunding, David Zilberman
Daugherty Water for Food Global Institute: Faculty Publications
Following man-made or natural catastrophes, widespread and long-lasting disruption of lifelines can lead to economic impacts for both business and residential lifeline users. As a result, the total economic losses caused by infrastructure damage may be much higher than the value of damage to infrastructure itself. In this paper, we consider the estimation of economic impacts on businesses and residential consumers resulting from water supply disruption. The methodology we present for estimating business interruption losses assumes that marginal losses are increasing in the severity of disruption and that there may be a critical water availability cutoff below which business activity …
College Of Engineering Senior Design Competition Spring 2007, University Of Nevada, Las Vegas
College Of Engineering Senior Design Competition Spring 2007, University Of Nevada, Las Vegas
Fred and Harriet Cox Senior Design Competition Projects
Part of every UNLV engineering student’s academic experience, the senior design project stimulates engineering innovation and entrepreneurship. Each student in their senior year chooses, plans, designs, and prototypes a product in this required element of the curriculum. A capstone to the student’s educational career, the senior design project encourages the student to use everything learned in the engineering program to create a practical, real world solution to an engineering challenge.
The senior design competition helps to focus the senior students in increasing the quality and potential for commercial application for their design projects. Judges from local industry evaluate the projects …
Cuando Viene El Agua: Percepciones De Los Impactos Sociales Del Proyecto Hidroeléctrico “Chan-75” En Las Comunidades Ubicadas En La Cuenca Del Río Changuinola, Bocas Del Toro, Jeffery D. Stein
Independent Study Project (ISP) Collection
This report analyzes the anticipated social impacts of a hydroelectric project, titled “Chan-75,” in the surrounding communities. The project is located in the Bosque Protector de Palo Seco (BPPS) protected area along the Changuinola River. The flooding of 750 ha to create a reservoir for the dam will require the resettlement of roughly 1,000 residents of at least four indigenous Ngöbe Buglé communities including Valle del Rey, Charco la Pava, Changuinola Arriba, and Guayabal, in addition to the submersion of thousands of ha of farmland belonging to residents of nearby communities (Cordero et al). Once completed, the dam will generate …
Predicting The Impacts Of Serra Leste: A Case Study In Companhia Vale Do Rio Doce’S Influence On Southern Pará, Jason Hayes
Predicting The Impacts Of Serra Leste: A Case Study In Companhia Vale Do Rio Doce’S Influence On Southern Pará, Jason Hayes
Independent Study Project (ISP) Collection
This project analyzes the possible environmental and socioeconomic impacts of Serra Leste, a newly proposed iron mine by the Companhia Vale do Rio Doce (CVRD). However, Serra Leste is also part of a much larger system of CVRD projects which has recently had a profound influence on the micro-region surrounding Curionópolis, the future cite of the operation. Interviews, CVRD studies, and secondary sources were used and contrasted to evaluate the situation from several angles. Environmentally, Serra Leste will have profound impacts on the water, air, and soil. Specifically, the mine will probably have the largest influence on regional water tables, …
Development Of A Screening Model For Design And Costing Of An Innovative Tailored Granular Activated Carbon Technology To Treat Perchlorate-Contaminated Water, William C. Powell
Development Of A Screening Model For Design And Costing Of An Innovative Tailored Granular Activated Carbon Technology To Treat Perchlorate-Contaminated Water, William C. Powell
Theses and Dissertations
Perchlorate contamination of drinking water is a problem that has recently gained national attention. The purpose of this research was to develop a tool to predict the cost and performance of tailored granular activated carbon (T-GAC), an innovative technology to treat perchlorate-contaminated water. The ability to predict cost and performance is essential to promote transfer and commercialization of innovative technologies. This study investigated how data obtained from small-scale laboratory tests could be applied to predict cost and performance of a full-scale T-GAC system to treat perchlorate-contaminated water. A technology model was developed using GAC design principles and using a multi-component …
The Effects Of Orthophosphate As A Copper Corrosion Control Inhibitor In High Alkalinity Drinking Water Systems, Stephen Grace
The Effects Of Orthophosphate As A Copper Corrosion Control Inhibitor In High Alkalinity Drinking Water Systems, Stephen Grace
Theses and Dissertations
The purpose of this research was to investigate orthophosphate as a corrosion inhibitor for copper pipe in a high-alkalinity drinking water system. Specifically, this thesis sought to answer three research questions regarding the impact of orthophosphate treatment, the nature of the mechanism by which orthophosphate controls copper corrosion, and the value of equilibrium modeling in predicting orthophosphate’s effects. The research questions were answered through a comprehensive literature review and experimental methodology integrating laboratory jar tests, water sampling and analysis from a field investigation, qualitative solids analysis, and equilibrium model application. This study analyzed field data obtained over the course of …
Characterization Of Chlorinated Ethene Degradation In A Vertical Flow Constructed Wetland, James M. Waldron
Characterization Of Chlorinated Ethene Degradation In A Vertical Flow Constructed Wetland, James M. Waldron
Theses and Dissertations
Chlorinated solvents, including perchloroethene (PCE) and trichlorethene (TCE), are among the most common groundwater contaminants found in the United States. Once released into the environment, chlorinated solvents are extremely persistent and often require costly and lengthy remedial actions. The use of constructed wetlands has shown promise as an effective and less costly alternative for the treatment of chlorinated solvent contaminated groundwater. This study characterized and evaluated the concentration of chlorinated ethenes within a vertical flow constructed wetland, fed with PCE contaminated groundwater, at Wright-Patterson Air Force Base (WPAFB), Ohio. Chlorinated ethene concentrations were characterized within three distinct layers of the …