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- Creators: School of Sustainability
- Member of: Barrett, The Honors College Thesis/Creative Project Collection
Description
Improvement in carbon capture percentage was calculated as most effective in 10 mg/L-MEA BG-11 media, with improvement in carbon capture of 1.012% over the control. In studying the effect of agitation at 150 revolutions-per-minute (RPM) with a magnetic stir bar, it was found that mass transfer actually decreased. Future investigations are warranted to fully characterize the effect of different alkanolamine types, concentrations, and mixing regimens on mass transfer of CO2. In this thesis, emphasis was placed on experimental setup to allow for a discussion of the unexpected characteristics of the findings of the mass transfer experiments. Understanding the effect of experimental setup on mass transfer will be important in designing more effective methods of CO2 absorption for improving growth of cyanobacteria.
ContributorsMcallister, Cameron William (Author) / Nielsen, David (Thesis director) / Nannenga, Brent (Committee member) / School of Sustainability (Contributor) / Chemical Engineering Program (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
A Study of the gasification of municipal solid waste (MSW) for hydrogen production was completed through research and statistical design of experiment. The study was done for general syngas production with conditions of high temperature and pressure. Waste samples from kitchen waste including rice, avocado, and egg shells were used. Dry orange blossom tree leaves were included and a very minimal fraction of used paper and Styrofoam. One of the components of the syngas predicted was hydrogen, but this study does not discuss techniques for the separation of the hydrogen from the syngas. A few suggestions, however, such as the use of gas chromatography and membranes are made for the study of the syngas and separation of the hydrogen from the syngas. A three level, three factors-half factorial design was used to analyze the impact of pressure, residence time and temperature on the gasification of MSW through a hydrothermal gasification approach. A series 4590 micro stirred reactor of 100mL was used to gasify MSW, but first, it was established through a TGA approach that the waste was about 5% moisture content and 55% organic content (OC). The TGA device used was the TG 209 F1 Libra. Results of the gasification indicated that the most important factor in the gasification of MSW is temperature, followed by residence time and that the syngas yield increases with a decreasing pressure of the system. A thermodynamic model relating the three factors and the syngas yield was developed.
ContributorsBuyinza, Allan Smith (Author) / Deng, Shuguang (Thesis director) / Nannenga, Brent (Committee member) / Chemical Engineering Program (Contributor) / School of Sustainability (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
This thesis is part of a larger research project, conducted by Elizabeth Stallings Young, which aims to improve understanding about the factors controlling the process of MIDP and the interaction between the biochemical reactions and the hydrological properties of soils treated with MIDP. Microbially Induced Desaturation and Precipitation (MIDP) is a bio-geotechnical process by which biogenic gas production and calcite mineral bio-cementation are induced in the pore space between the soil particles, which can mitigate earthquake induced liquefaction (Kavazanjian et al. 2015). In this process substrates are injected which stimulate indigenous nitrate reducing bacteria to produce nitrogen and carbon dioxide gas, while precipitating calcium carbonate minerals. The biogenic gas production has been shown to dampen pore pressure build up under dynamic loading conditions and significantly increase liquefaction resistance (Okamura and Soga 2006), while the precipitation of calcium carbonate minerals cements adjacent granular particles together. The objective of this thesis was to analyze the recorded pore pressure development as a result of biogenic gas formation and migration, over the entire two-dimensional flow field, by generating dynamic pressure contour plots, using MATLAB and ImageJ software. The experiment was run in a mesoscale tank that was approximately 114 cm tall, 114 cm wide and 5.25 cm thick. Substrate was flushed through the soil body and the denitrifying reaction occurred, producing gas and correspondingly, pressure. The pressure across the tank was recorded with pore pressure sensors and was loaded into a datalogger. This time sensitive data file was loaded into a MATLAB script, MIDPCountourGen.m, to create pressure contours for the tank. The results from this thesis include the creation of MIDPContourGen.m and a corresponding How-To Guide and pore pressure contours for the F60 tank. This thesis concluded that the MIDP reaction takes a relatively short amount of time and that the residual pressure in the tank after the water flush on day 17 offers a proof of effect of the MIDP reaction.
ContributorsCoppinger, Kristina Marie (Author) / van Paassen, Leon (Thesis director) / Kavazanjian, Edward (Committee member) / Stallings-Young, Elizabeth (Committee member) / Civil, Environmental and Sustainable Eng Program (Contributor) / School of Sustainability (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
This thesis explores the role and meaning of community in the community land trust (CLT) model, and uses a single embedded case study to examine the mission, organizational structure, and governance model of Newtown CDC, a CLT based in Phoenix, Arizona. The thesis seeks to answer the questions, “What does community participation and empowerment mean to Newtown CDC”, and “how does the organization satisfy the competing needs of community participation and affordable housing production?” Historical documents of Newtown CDC, interviews with CLT staff, board members, and national policy representatives, as well as a survey of current and former CLT residents, reveal the perceived meaning and role of community, its evolution, and successes and failures in engaging the community. The data finds that a change in political and cultural dynamics has contributed to more resources focused on developing affordable housing, and less focus on community engagement. CLTs have adapted to this change, and the role and execution of community engagement has also evolved.
ContributorsSubbaraman, Sree Manasvini (Author) / Ehlenz, Meagan (Thesis director) / Brewer, Stephanie (Committee member) / School of Geographical Sciences and Urban Planning (Contributor, Contributor) / School of Sustainability (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
As sustainability has become more prevalent it has become clear that companies have a pressing need to incorporate sustainability into their business. The purpose of this study is to analyze the ways that integrating sustainability can actually provide a financial benefit for a company. Through interviews and extensive research, we will target sustainability initiatives that work for both small and large businesses. This is another key part of our research; addressing the discrepancy in how businesses of different sizes are able to use sustainability, and then finding sustainability initiatives that recognize this discrepancy and are effective for businesses of all sizes.
As sustainability has become more prevalent it has become clear that companies have a pressing need to incorporate sustainability into their business. The purpose of this study is to analyze the ways that integrating sustainability can actually provide a financial benefit for a company. Through interviews and extensive research, we will target sustainability initiatives that work for both small and large businesses. This is another key part of our research; addressing the discrepancy in how businesses of different sizes are able to use sustainability, and then finding sustainability initiatives that recognize this discrepancy and are effective for businesses of all sizes.
Through the interviews of three large corporations (Amazon, Dell, and Lowes), and four small businesses (Exel Shirts, Goode Deals, Desert Dream Ice Cream, and FitzGerald and Sons Contracting) we were able to discover several very effective sustainability initiatives, such as ocean plastics recycling at Dell or packaging advertisements at Amazon. This thesis then discussed what characteristics of these plans are easiest to transfer and implement for businesses of all sizes, classifying the “ideal” sustainability initiative. Possible revenue earners like reusing scrap, and the intangible benefits like saved labor of telecommuting as some of the most significant financial value that sustainability can provide for companies of all sizes.
As sustainability has become more prevalent it has become clear that companies have a pressing need to incorporate sustainability into their business. The purpose of this study is to analyze the ways that integrating sustainability can actually provide a financial benefit for a company. Through interviews and extensive research, we will target sustainability initiatives that work for both small and large businesses. This is another key part of our research; addressing the discrepancy in how businesses of different sizes are able to use sustainability, and then finding sustainability initiatives that recognize this discrepancy and are effective for businesses of all sizes.
Through the interviews of three large corporations (Amazon, Dell, and Lowes), and four small businesses (Exel Shirts, Goode Deals, Desert Dream Ice Cream, and FitzGerald and Sons Contracting) we were able to discover several very effective sustainability initiatives, such as ocean plastics recycling at Dell or packaging advertisements at Amazon. This thesis then discussed what characteristics of these plans are easiest to transfer and implement for businesses of all sizes, classifying the “ideal” sustainability initiative. Possible revenue earners like reusing scrap, and the intangible benefits like saved labor of telecommuting as some of the most significant financial value that sustainability can provide for companies of all sizes.
ContributorsFitzgerald, John Haviland (Author) / Keane, Katy (Thesis director) / Iryna, Printezis (Committee member) / Department of Supply Chain Management (Contributor) / School of Sustainability (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
This thesis explores the likely impacts of climate change on agricultural production globally and in the state of Arizona, and on agricultural supply chains. It shows increases in severe weather, including hotter temperatures and droughts, will have a negative impact on crop production in the state and on global agricultural supply chains. It also shows the effects on the environment caused by our current cradle-to-grave supply chains. As a partial remedy, this thesis explores the benefits of vertical farming systems and shows how they could be of value to the residents of Arizona.
ContributorsKing, Emily Marie (Author) / Kirby, Andrew (Thesis director) / Carter, Craig (Committee member) / Department of Supply Chain Management (Contributor) / School of Sustainability (Contributor) / School of International Letters and Cultures (Contributor) / Dean, W.P. Carey School of Business (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
The project was designed to increase awareness of sustainability and environmental science in public high school students who would otherwise not be exposed to complex environmental problems. This was done by testing the effectiveness of a simple yet comprehensive curriculum that could satisfy and expand the scope of the Arizona Education Science Standard, Essential HS.E1U3.14, while simultaneously being accessible to (and teachable by) any school instructor. Another goal of the project is to stimulate the minds of students who would otherwise not be introduced to the topics of sustainability and environmental science. Utilizing proven visualization and engagement techniques, the curriculum focuses on five key subjects: waste, water, energy, ecosystems, and environmental challenges. Each of these subjects had an educational presentation, interactive activities, question and answer sessions, and bonus activities. To test the overall effectiveness of the curriculum, students were given a pretest to gauge initial comprehension, and then after the five subjects (or modules) were taught, the same test was distributed again to the students. The aforementioned was done with two groups of students. Posttest results support the project effectiveness. The data indicate that the lessons had a positive impact on the test results, with one class averaging 33.6% better on the posttest than the pretest, indicating that the concepts taught did resonate with the students in a measurable way.
ContributorsAcciardo, Nicholas William (Author) / Saffell, Erinanne (Thesis director) / Whipple, Kelin (Committee member) / School of Sustainability (Contributor) / School of Earth and Space Exploration (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
My thesis explores the development of a new treatment option for children with Amblyopia. I did a lot of research into existing treatment options as well as interviewing patients and their parents do figure out why these treatments were not working. I interviewed a pediatric ophthalmologist to better understand this condition from their point of view. I also did a competitive analysis to see who else was in this marketplace. From the insights I gathered I was able to create a user journey map to see where the most problems arose during the experience from Diagnoses to end of treatment. With this research I was able to design a new treatment plan that was focused on empathizing with the user. I developed several concepts ranging from lo-fi to blue sky. I tested these concepts by making models and getting feedback from the user. I developed the actual design of the glasses through sketching and model making. I tested the ergonomics and design with the help of my classmates. The solution is a combination of smart glasses and an app. The smart glasses function as a replacement of traditional and popular patching by dimming one lens to block vision to the strong eye. This forces the weak eye to be used. The app is used to encourage kids to use the glasses more often through games and challenges. The challenges give rewards for wearing the glasses for an extended period of time. The games are used to increase of effectiveness of the treatment. Research showed that video games like Tetris forces the eye to focus and be used more than in daily life. This solution makes the treatment experience positive instead of negative as it was with other treatments.
ContributorsMeling, Erlend Henry Olav (Author) / Shin, Dosun (Thesis director) / Feil, Magnus (Committee member) / School of Sustainability (Contributor) / The Design School (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
As a cause of negative economic, societal, and environmental effects, food waste is increasingly being seen as a sustainability issue that needs to be addressed. Reduction of food waste is preferred to recycling because it reduces the financial burden and technological innovations needed to address the issue. While there are many different approaches to reduce food waste, this paper investigates dynamic social norms as an avenue for reducing food waste. Recent studies showcased the effectiveness of using dynamic social norms to reduce meat consumption and the use of to-go cups. However, there appears to be a gap in research that investigates the impact of dynamic social norms in U.S. university community dining settings. This study piloted the use of dynamic social norms to intervene in post-consumer food waste behaviors at Arizona State University. Specifically, this study compared food waste amounts in a location with and without an intervention tool as well as conducted interviews to monitor any self-reported behavior change. Results show that dynamic social norms can promote behavior change in terms of food waste when compared to a control location without the intervention. Further, this study advocates for monitoring food habits through both quantitative and qualitative analysis in order to identify potential behavior changes that could not be captured to the same extent by a mono-methodological approach.
ContributorsCampbell, Hailey Paige (Author) / Fischer, Daniel (Thesis director) / Auustin-Behravesh, Shirley-Ann (Committee member) / School of Sustainability (Contributor, Contributor) / Watts College of Public Service & Community Solut (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Urban agriculture includes both farming and gardening, typically in a community format, in urban areas. Agrihoods are neighborhoods centered around food production and they are becoming more popular residential areas as the local food movement grows. Agritopia is one of these agrihoods; located in Gilbert, Arizona, it contains both an urban farm and a community garden. Agritopia is oft cited for being an exemplary agrihood. This thesis uses Agritopia as a case study for exploring the challenges associated with urban agriculture in the Sonoran Desert.
Most urban agriculture sites experience challenges related to sustainability, but in the Sonoran Desert, even more challenges arise as a result of a unique climate, soil conditions, intense storms, and water scarcity. The objective of this project was to obtain information on common barriers to urban agriculture in the Sonoran Desert, as well as ways to overcome these barriers that will be made public for the purpose of improving sustainability of similar agriculture projects. I used interviews with gardeners and farm staff as my primary research method to gain insight to these barriers and solutions, and I coded their responses relating to challenges according to frequency mentioned. Using my findings, I compiled a thorough list of recommendations that urban agriculture projects in the Sonoran Desert or in similar climatic areas can use to achieve greater success and sustainable outcomes.
Most urban agriculture sites experience challenges related to sustainability, but in the Sonoran Desert, even more challenges arise as a result of a unique climate, soil conditions, intense storms, and water scarcity. The objective of this project was to obtain information on common barriers to urban agriculture in the Sonoran Desert, as well as ways to overcome these barriers that will be made public for the purpose of improving sustainability of similar agriculture projects. I used interviews with gardeners and farm staff as my primary research method to gain insight to these barriers and solutions, and I coded their responses relating to challenges according to frequency mentioned. Using my findings, I compiled a thorough list of recommendations that urban agriculture projects in the Sonoran Desert or in similar climatic areas can use to achieve greater success and sustainable outcomes.
ContributorsAnglin, Paige Elizabeth (Author) / Eakin, Hallie (Thesis director) / Norton, Susan (Committee member) / School of Sustainability (Contributor, Contributor) / School of Geographical Sciences and Urban Planning (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05