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- Creators: Barrett, The Honors College
- Creators: Kavazanjian, Edward
- Creators: Allenby, Braden
- Creators: Cadillo – Quiroz, Hinsby
Description
Currently conventional Subtitle D landfills are the primary means of disposing of our waste in the United States. While this method of waste disposal aims at protecting the environment, it does so through the use of liners and caps that effectively freeze the breakdown of waste. Because this method can keep landfills active, and thus a potential groundwater threat for over a hundred years, I take an in depth look at the ability of bioreactor landfills to quickly stabilize waste. In the thesis I detail the current state of bioreactor landfill technologies, assessing the pros and cons of anaerobic and aerobic bioreactor technologies. Finally, with an industrial perspective, I conclude that moving on to bioreactor landfills as an alternative isn't as simple as it may first appear, and that it is a contextually specific solution that must be further refined before replacing current landfills.
ContributorsWhitten, George Avery (Author) / Kavazanjian, Edward (Thesis director) / Allenby, Braden (Committee member) / Houston, Sandra (Committee member) / Civil, Environmental and Sustainable Engineering Programs (Contributor) / Barrett, The Honors College (Contributor)
Created2013-05
Description
For those living lives devoted to taking care of others, it can be difficult to remember to take care of themselves. This thesis project is a review of quantitative and qualitative literature pertaining to self-care for the caregivers of Alzheimer's and dementia patients. Three nursing diagnoses and related nursing interventions were created using data from the evidence-based literature. With the proper knowledge and assistance, caregivers can better prepare for the future and participate in health-promoting self-care activities which may improve their quality of life.
ContributorsSchmidt, Anna Claire (Author) / Fries, Kathleen (Thesis director) / Barnum, Leslie (Committee member) / Edson College of Nursing and Health Innovation (Contributor) / Watts College of Public Service & Community Solut (Contributor) / Barrett, The Honors College (Contributor)
Created2021-05
Characterization and Manipulation of Microbiomes From Arid Landfills for Improved Methane Production
Description
Environmentally harmful byproducts from solid waste’s decomposition, including methane (CH4) emissions, are managed through standardized landfill engineering and gas-capture mechanisms. Yet only a limited number of studies have analyzed the development and composition of Bacteria and Archaea involved in CH4 production from landfills. The objectives of this research were to compare microbiomes and bioactivity from CH4-producing communities in contrasting spatial areas of arid landfills and to tests a new technology to biostimulate CH4 production (methanogenesis) from solid waste under dynamic environmental conditions controlled in the laboratory. My hypothesis was that the diversity and abundance of methanogenic Archaea in municipal solid waste (MSW), or its leachate, play an important role on CH4 production partially attributed to the group’s wide hydrogen (H2) consumption capabilities. I tested this hypothesis by conducting complementary field observations and laboratory experiments. I describe niches of methanogenic Archaea in MSW leachate across defined areas within a single landfill, while demonstrating functional H2-dependent activity. To alleviate limited H2 bioavailability encountered in-situ, I present biostimulant feasibility and proof-of-concepts studies through the amendment of zero valent metals (ZVMs). My results demonstrate that older-aged MSW was minimally biostimulated for greater CH4 production relative to a control when exposed to iron (Fe0) or manganese (Mn0), due to highly discernable traits of soluble carbon, nitrogen, and unidentified fluorophores found in water extracts between young and old aged, starting MSW. Acetate and inhibitory H2 partial pressures accumulated in microcosms containing old-aged MSW. In a final experiment, repeated amendments of ZVMs to MSW in a 600 day mesocosm experiment mediated significantly higher CH4 concentrations and yields during the first of three ZVM injections. Fe0 and Mn0 experimental treatments at mesocosm-scale also highlighted accelerated development of seemingly important, but elusive Archaea including Methanobacteriaceae, a methane-producing family that is found in diverse environments. Also, prokaryotic classes including Candidatus Bathyarchaeota, an uncultured group commonly found in carbon-rich ecosystems, and Clostridia; All three taxa I identified as highly predictive in the time-dependent progression of MSW decomposition. Altogether, my experiments demonstrate the importance of H2 bioavailability on CH4 production and the consistent development of Methanobacteriaceae in productive MSW microbiomes.
ContributorsReynolds, Mark Christian (Author) / Cadillo-Quiroz, Hinsby (Thesis advisor) / Krajmalnik-Brown, Rosa (Thesis advisor) / Wang, Xuan (Committee member) / Kavazanjian, Edward (Committee member) / Arizona State University (Publisher)
Created2022
Description
Dementia is a progressive, neurodegenerative disease for which there is no cure at the present time. Patients with dementia and age-related disorders experience neuropsychiatric symptoms such as delusions, hallucinations, and other difficult to handle behaviors (Peipert et al., 2018). Due to the staggering cost of hiring in-home help or placing their loved ones in a memory care facility, many Americans choose to care for their loved one at home. Unfortunately, this undertaking can impact the caregiver’s emotional and mental health, financial situation, and social life (Peipert et al., 2018). Psychosocial interventions, ranging from social support to therapy, have been shown to be incredibly effective in improving dementia caregiver mental health. One such psychosocial intervention is Cognitive-Behavioral Therapy. Cognitive-Behavioral Therapy (CBT) helps the individual adapt more effective thinking patterns in order to improve their coping skills (Kwon et al., 2017). CBT combines cognitive theory and behavioral theory to explain how our thoughts and feelings directly impact the severity of a situation. In cognitive theory, it is our interpretation of the events that happen to us that is the root of our emotions, not the events themselves. The relationship between our interpretation and our emotions is known as the ABC model (Sorocco & Lauderdale, 2011). In this paper, several relevant studies researching the impacts of CBT on family dementia caregiver stress and burden are assessed and reviewed. A comprehensive, tentative CBT plan for family dementia caregivers is included and proposed.
ContributorsVan Duine, Kelly Nicole (Author) / Infurna, Frank (Thesis director) / Baker, Zach (Committee member) / Barrett, The Honors College (Contributor) / School of Social and Behavioral Sciences (Contributor) / School of International Letters and Cultures (Contributor)
Created2024-05
Description
Zero-Valent Metals (ZVM) are highly reactive materials and have been proved to be effective in contaminant reduction in soils and groundwater remediation. In fact, zero-Valent Iron (ZVI) has proven to be very effective in removing, particularly chlorinated organics, heavy metals, and odorous sulfides. Addition of ZVI has also been proved in enhancing the methane gas generation in anaerobic digestion of activated sludge. However, no studies have been conducted regarding the effect of ZVM stimulation to Municipal Solid Waste (MSW) degradation. Therefore, a collaborative study was developed to manipulate microbial activity in the landfill bioreactors to favor methane production by adding ZVMs. This study focuses on evaluating the effects of added ZVM on the leachate generated from replicated lab scale landfill bioreactors. The specific objective was to investigate the effects of ZVMs addition on the organic and inorganic pollutants in leachate. The hypothesis here evaluated was that adding ZVM including ZVI and Zero Valent Manganese (ZVMn) will enhance the removal rates of the organic pollutants present in the leachate, likely by a putative higher rate of microbial metabolism. Test with six (4.23 gallons) bioreactors assembled with MSW collected from the Salt River Landfill and Southwest Regional Landfill showed that under 5 grams /liter of ZVI and 0.625 grams/liter of ZVMn additions, no significant difference was observed in the pH and temperature data of the leachate generated from these reactors. The conductivity data suggested the steady rise across all reactors over the period of time. The removal efficiency of sCOD was highest (27.112 mg/lit/day) for the reactors added with ZVMn at the end of 150 days for bottom layer, however the removal rate was highest (16.955 mg/lit/day) for ZVI after the end of 150 days of the middle layer. Similar trends in the results was observed in TC analysis. HPLC study indicated the dominance of the concentration of heptanoate and isovalerate were leachate generated from the bottom layer across all reactors. Heptanoate continued to dominate in the ZVMn added leachate even after middle layer injection. IC analysis concluded the chloride was dominant in the leachate generated from all the reactors and there was a steady increase in the chloride content over the period of time. Along with chloride, fluoride, bromide, nitrate, nitrite, phosphate and sulfate were also detected in considerable concentrations. In the summary, the addition of the zero valent metals has proved to be efficient in removal of the organics present in the leachate.
ContributorsPandit, Gandhar Abhay (Author) / Cadillo – Quiroz, Hinsby (Thesis advisor) / Olson, Larry (Thesis advisor) / Boyer, Treavor (Committee member) / Arizona State University (Publisher)
Created2019
Description
The purpose of this thesis project is to analyze the impact that patient death has on long-term care providers. This study draws upon my own experience working as a licensed nursing assistant in a long-term care facility and also uses a qualitative analysis of six semi-structured interviews with other nursing assistants and hospice volunteers. With patient death being an unavoidable part of working in this area of healthcare, I explore how these care providers cope with losing their patients and the effectiveness of these coping mechanisms. Some strategies found that aided in coping with grief included staying detached from patients, being distracted by other aspects of the job, receiving support from co-workers, family members and/or supervisors, and having a religious outlook on what happens following death. In addition to these, I argue that care providers also utilize the unconscious defense mechanism of repression to avoid their feelings of grief and guilt. Repressing the grief and emotions that come along with patient death can protect the individual from additional pain in order for them to continue to do their difficult jobs. Being distracted by other patients also aids in the repression process by avoiding personal feelings temporarily. I also look into factors that have been found to affect the level of grief including the caregiver’s closeness to the patient, level of preparedness for the death, and first experience of losing a patient. Ultimately, I show that the common feelings accompanied by patient death (sadness, anger and stress) and the occurrence of burnout are harmful symptoms of the repression taking place.
ContributorsMasterson, Kaitlin (Author) / Loebenberg, Abby (Thesis director) / Mack, Robert (Committee member) / School of Mathematical and Statistical Sciences (Contributor) / School of Molecular Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
This paper will provide a review of the difficulties associated with caregiving for a family member with Alzheimer’s Disease and Related Dementias (ADRD) and the intervention strategies used to improve psychosocial wellbeing of the caregiver. A review of various empirical studies compares different intervention strategies and their accessibility and effect on caregiver mental health. The literature suggests that the most effective treatments are those that are based in cognitive behavioral techniques , teaching caregivers how to recognize and regulate negative emotions that arise and to develop coping strategies for stressful situations involving their loved one with ADRD (Cheng et al., 2018). However, there is currently only a limited amount of research done on the topic of pain recognition and management by caregivers for those with ADRD; future research on this topic is needed to help to develop programs to teach caregivers strategies to help them recognize changes associated with pain in their loved one’s health and wellbeing (Kankkunen & Valimaki, 2014). Future research regarding caregivers for those with ADRD will continue to improve the development of family based support programs based in education for recognition of pain symptoms in patients and cognitive behavioral principles to improve caregiver and patient quality of life (Gitlin et al., 2015).
ContributorsKinnier, Amber (Author) / Coon, David (Thesis director) / Hanish, Laura (Committee member) / Sanford School of Social and Family Dynamics (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Changing Caregivers Attitudes toward dementia study was conducted to assess changes in attitudes of formal caregivers caring for persons with dementia in a palliative care setting. An eight-minute virtual experience activity was delivered to 40 para-professional caregivers of those diagnosed with mild, moderate or severe dementia. The virtual experience consisting of a set of instructions, headphones and different materials, is a quick, effective and efficient way to mimic having some of the stressors those living with Alzheimer's, or other types of dementia, may experience in their day-to-day lives. The purpose of this study was to analyze the effect on caregivers’ emotions and attitudes toward dementia, before and after the virtual experience using a qualitative approach. It is hypothesized that the intervention will educate and instill empathy in the caregivers, overall, improving the delivery of their care in the future. Participants were asked open ended questions before and after the intervention using the virtual experience and four themes emerged: (1) Being more patient, (2) Slowing down, (3) Empathy and (4) Being positive. The findings suggest further education about the disease process is needed to help caregivers understand the actions of dementia related behaviors. Also, education about different strategies to handle some negative behaviors associated with Alzheimer’s or other types of dementia can be done to improve the situation. Overall, the findings showed an increase in empathy and positive words or phrases from the participants, suggesting the simulation experience was an applicable and ethical intervention.
ContributorsPfohl, Marin Elizabeth (Co-author) / Latini, Abigail (Co-author) / Hamilton, Gillian (Thesis director) / Gallagher, Maribeth (Committee member) / Uriri-Glover, Johannah (Committee member) / Edson College of Nursing and Health Innovation (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Changing Caregivers Attitudes toward dementia study was conducted to assess changes in attitudes of formal caregivers caring for persons with dementia in a palliative care setting. An eight-minute virtual experience activity was delivered to 40 para-professional caregivers of those diagnosed with mild, moderate or severe dementia. The virtual experience consisting of a set of instructions, headphones and different materials, is a quick, effective and efficient way to mimic having some of the stressors those living with Alzheimer's, or other types of dementia, may experience in their day-to-day lives. The purpose of this study was to analyze the effect on caregivers’ emotions and attitudes toward dementia, before and after the virtual experience using a qualitative approach. It is hypothesized that the intervention will educate and instill empathy in the caregivers, overall, improving the delivery of their care in the future. Participants were asked open ended questions before and after the intervention using the virtual experience and four themes emerged: (1) Being more patient, (2) Slowing down, (3) Empathy and (4) Being positive. The findings suggest further education about the disease process is needed to help caregivers understand the actions of dementia related behaviors. Also, education about different strategies to handle some negative behaviors associated with Alzheimer’s or other types of dementia can be done to improve the situation. Overall, the findings showed an increase in empathy and positive words or phrases from the participants, suggesting the simulation experience was an applicable and ethical intervention.
ContributorsLatini, Abigail Louise (Co-author) / Pfohl, Marin (Co-author) / Hamilton, Gillian (Thesis director) / Gallagher, Maribeth (Committee member) / Uriri-Glover, Johannah (Committee member) / Edson College of Nursing and Health Innovation (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05