ศักยภาพของเถ้าลอยลิกไนต์ในการแก้ไขปัญหาดินเปรี้ยว,
2023
Chulalongkorn University
ศักยภาพของเถ้าลอยลิกไนต์ในการแก้ไขปัญหาดินเปรี้ยว, อรวรรณ ศิริรัตน์พิริยะ, ธวิโรจน์ ตันนูกิจ, กนกพร ชัยวุฒิกุล
Applied Environmental Research
เถ้าลอยลิกไนต์จากโรงงานไฟฟ้าพลังงานความร้อนแม่เมาะ จังหวัดลำปาง มีค่าความเป็นกรด-ด่าง (pH) เท่ากับ 10.25 ซึ่งจัดว่าเป็นวัสดุที่มีความเป็นด่างจัดมาก และมีเส้นผ่าศูนย์กลาง 0.49-878 μm พบว่า มีอำนาจในการทำให้เป็น กลางต่ำมาก จึงไม่สามารถเป็นปูนทางการเกษตร (Agricultural lime) ที่แก้ปัญหาดินเปรี้ยวได้ และเมื่อศึกษาไนดินเหนียวและดินร่วน ทั้งในภาคสนาม และในห้องปฎิบัติการ ด้วยแผนการทดลอง แบบ Complete Randomized Design (CRD) ทำ 3 ซ้ำ พบว่า ความสามารถของเถ้าลอยลิกไนต์ในการยกระดับ pH ของดิน เพิ่มขึ้นตามอัตราเติมที่เพิ่มขึ้น แต่ที่อัตราเดิม 4 ตัน/ไร่ ในภาคสนามนั้น การเพิ่มขึ้นของ pH ดินเดิม (ดินเหนียวและดิน ร่วน) เมื่อเติมเถ้าลอยลิกไนต์มีน้อยกว่าการเติมปูนมาร์ลอย่างมีนัยสำคัญทางสถิติ ทั้งนี้การเดิมเถ้าลอยลิกไนต์ ไม่มีผลทำ ให้ pH ของดินเดิมลดลงเหมือนปุ๋ยเคมี ในขณะเดียวกันกลับมีผลทำให้ pH ของดินเดิมเพิ่มขึ้นอย่างมีนัยสำคัญเช่นเดียว กับปุ๋ยหมัก ที่อัตราเดิม 2 ตัน/ไร่ ดังนั้นศักยภาพของเถ้าลอยลิกไนต์ในการแก้ไขปัญหาดินเปรี้ยว จึงมีขอบเขตเพียงยกระดับ pH ของดิน ซึ่งน่าจะเป็นประโยชน์ต่อการเพิ่มปริมาณธาตุอาหารให้กับดินและพืช โดยมีการจัดการดิน น้ำ พืช อย่างเหมาะสมร่วมด้วย
Life Cycle Assessment Of Plastic Resin: A Case Study Of The Petrochemical Industry In Thailand For The Production Of Hdpe Resin,
2023
Chulalongkorn University
Life Cycle Assessment Of Plastic Resin: A Case Study Of The Petrochemical Industry In Thailand For The Production Of Hdpe Resin, Natthapong Wichaiutcha, Abhishek Dutta, Orathai Chavalparit
Applied Environmental Research
Life cycle sustainability is an important tool for assessing product performance based on the three pillars of environment, economy and society. This study examined the life cycle impact, cost and social implications of high-density polyethylene (HDPE) resin. Environmental assessment revealed nonrenewable energy as the greatest impact followed by carcinogens, respiratory inorganics and global warming while economically, the operational cost of HDPE resin production was significantly highest. The social impact assessment following the United Nation Environmental Programme (UNEP)/ Society of Environmental Toxicology and Chemistry (SETAC) guidelines demonstrated optimal performance for all indicators except for gender ratio and disabled employee criteria which …
Optimization Of Vanillin Production From Lignin Using Catalytic Depolymerization Over A Cuo/Al2o3 Catalyst,
2023
Chulalongkorn University
Optimization Of Vanillin Production From Lignin Using Catalytic Depolymerization Over A Cuo/Al2o3 Catalyst, Sirawit Sangnak, Arthit Neramittagapong, Sutasinee Neramittagapong, Somnuk Theerakulpisut, Pongsert Sriprom
Applied Environmental Research
The optimal conditions for vanillin production from lignin depolymerization using CuO/Al2O3 catalysts were determined by combining Box-Behnken design (BBD) and response surface methodology (RSM). Independent variables, including temperature (80–140 °C), NaOH loading (0.5–1.5 g), time (30–90 min), and catalyst weight (0.5–1.5 g), were investigated to determine the optimal conditions, with the concentration of vanillin being the dependent variable. A CuO/Al2O3 catalyst was prepared by impregnation method. The vanillin obtained from the reaction was analyzed using high-performance liquid chromatography (HPLC). The maximum obtained vanillin concentration of 59.14 mg·L-1 was achieved with a temperature of 80 °C, a reaction time of 90 …
Microplastic Contamination In The Coastal Environment: A Case Study From The Mae Klong River, Samut Songkhram,
2023
Chulalongkorn University
Microplastic Contamination In The Coastal Environment: A Case Study From The Mae Klong River, Samut Songkhram, Pattraporn Chaisanguansuk, Suphak Ploenbuppa, Thitiphan Assawincharoenkij, Sumet Phantuwongraj, Akkaneewut Jiraphinyakul
Applied Environmental Research
To investigate the microplastic contamination in the coastal area in Samut Songkhram, we collected sediment samples from six locations in mangrove forests along the Mae Klong River estuary (MK) and the nearby Khlong Khon canal (KK). The microplastics were extracted by ZnCl2 density separation and subsequently H2O2 digestion. The microplastic abundance and physical properties, including their size, color, and shape, were determined under the binocular microscope. The selected microplastic samples were analyzed by µ-FTIR spectroscopy to identify their polymer types. Microplastic concentrations were c. 580 and 1690 items kg-1 d.w. in the samples from MK and KK. The lower microplastic …
Assessment Of Heavy Metal Cd And Pb Concentrations And The Ecological Risk From Seawater, Sediments, And Perna Viridis In Semarang Bay, Indonesia,
2023
Chulalongkorn University
Assessment Of Heavy Metal Cd And Pb Concentrations And The Ecological Risk From Seawater, Sediments, And Perna Viridis In Semarang Bay, Indonesia, Max Rudolf Muskananfola, Agus Hartoko, Nurul Latifah
Applied Environmental Research
Semarang Bay is a multiple water source from some rivers located at the forefront of the most populated city in Central Java. These waters are polluted by wastes from various sources. Previous studies conducted were limited to specific areas and were mainly focused on one or two media only. This research aims to analyse the heavy metal Cd and Pb concentrations in seawater, sediments, and green mussels and the ecological risks. Field data were collected from 18 sites from three locations: Semarang, Demak and Kendal during the dry season of 2020. Environmental variables were measured in situ, and the heavy …
Health Impacts From Pm2.5 Exposure Using Environmental Epidemiology And Health Risk Assessment: A Review,
2023
Chulalongkorn University
Health Impacts From Pm2.5 Exposure Using Environmental Epidemiology And Health Risk Assessment: A Review, Thanakon Sukuman, Kayo Ueda, Sarunya Sujaritpong, Hirunwut Praekunatham, Kornwipa Punnasiri, Tuangsit Wimuktayon, Trakarn Prapaspongsa
Applied Environmental Research
Exposure to PM2.5 has been known to cause a variety of serious health consequences. Quantifying and investigating the health effects of PM2.5 pollution are imperative to understand and collect scientific evidence for supporting policies and associated actions. In this paper, we reviewed published environ-mental epidemiological studies and health risk assessments evaluating the health impacts of PM2.5 exposure in the PubMed database to identify the attributes of each method and aggregate the health impact results to perform analyses and summaries. Forty-two studies were identified after applying our search strategy, inclusion, and exclusion criteria. The epidemiological studies found an increased risk of …
Potential Factors Of Landslide Recurrence In Uttaradit, Thailand: A Case Study In Laplae, Mueang Uttaradit, And Tha Pla Districts,
2023
Chulalongkorn University
Potential Factors Of Landslide Recurrence In Uttaradit, Thailand: A Case Study In Laplae, Mueang Uttaradit, And Tha Pla Districts, Panithan Sawatdikomon, Watit Khokthong, Nipada Santha
Applied Environmental Research
Laplae, Mueang Uttaradit, and Tha Pla district, Uttaradit province, Thailand are considered as high potential landslide areas. Still, this disaster is difficult to address because of complex factors controlling its occurrence. Therefore, the prediction of the potential landslide area using a landslide susceptibility map has been able to accomplish as a great strategy for the disaster. A landslide susceptibility map was produced by the geographic information system (GIS) data. The methods were initially conducted by the selection of potential factors related to landslides, which were lithology, slope, aspect, plan curvature, profile curvature, distance to stream, land use, and rainfall. All …
Application Of Fe3o4/Thiamine Magnetic Particles In The Removal Of Methylene Blue,
2023
Chulalongkorn University
Application Of Fe3o4/Thiamine Magnetic Particles In The Removal Of Methylene Blue, Lan Tran-Nguyen, Suong Mai-Thi-Thu, Thanh-Ty Nguyen, Kim-Phung Ly, Luu-Ngoc-Hanh Cao, Tran Thi Bich Quyen, Shella Permatasari Santoso, Nguyen-Phuong-Dung Tran, Nguyen Minh Nhut
Applied Environmental Research
Fe3O4/thiamine particles were prepared in this work via precipitation method. The synthesis method is based on the principle of precipitation of Fe3O4 particles in the presence of thiamine coating agent. Also, the potential application of Fe3O4/ thiamine in the removal of methylene blue (MB) was investigated. Several factors that affect the synthesis of Fe3O4/thiamine such as base concentration, mass ratio of FeCl2 to thiamine, reaction temperature, and reaction time were determined. Optimal conditions for preparing Fe3O4/thiamine are NH4OH concentration = 10%, mass ratio of FeCl2:thiamine = 5:1 (g g-1), reaction temperature = 30 °C, reaction time = 120 min. The …
Distribution Of Exchangeable Magnesium In Lowland Rice-Cultivated Soils Of Sri Lanka As Affected By The Differences In Climate, Soil, And Water Source,
2023
Chulalongkorn University
Distribution Of Exchangeable Magnesium In Lowland Rice-Cultivated Soils Of Sri Lanka As Affected By The Differences In Climate, Soil, And Water Source, Indeera Hetti Arachchige, Buddhi Marambe, Mohomad Nijamudeen, Harsha Kadupitiya, Dinaratne Sirisena, Rohana Chandrajith, Lalith Suriyagoda
Applied Environmental Research
Magnesium (Mg) is an essential macronutrient for plants. Even though Sri Lankans consume rice as the staple food, the Mg status in Sri Lankan paddy soils as affected by its climate, soils, and water sources used are not well understood. This study was conducted to (i) determine the distribution of exchangeable Mg (ex-Mg) concentration, and (ii) examine the interactive effects of agro-climatic zones (ACZs), soil order, and water source in determining the ex-Mg concentra-tion in lowland paddy fields of Sri Lanka. A total of 9,038 soil samples representing six ACZs, six soil orders, and three water sources were collected using …
The Effect Of Irrigation Techniques On Sustainable Water Management For Rice Cultivation System - A Review,
2023
Chulalongkorn University
The Effect Of Irrigation Techniques On Sustainable Water Management For Rice Cultivation System - A Review, Bittawat Wichaidist, Amornrat Intrman, Songsak Puttrawutichai, Chawakorn Rewtragulpaibul, Supatchaya Chuanpongpanich, Chaisri Suksaroj
Applied Environmental Research
Rice serves as a fundamental sustenance for approximately half of the global population, particularly in Asia. Nevertheless, the cultivation of rice demands a substantial water supply, and the challenges associated with water deficits have been exacerbated by irregular rainfall patterns induced by global warming. Consequently, there is a critical need to reassess irrigation techniques to effectively tackle these issues. In this comprehensive review, the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) method was employed to systematically explore literature on irrigation techniques aimed at fostering sustainable water management in rice cultivation systems. The primary components of the framework encompass …
An Ancient Thread Of “Inseparable Oneness”: A Theoretical Exploration Of Community And Kinship In Grassroots Environmental Justice Movements,
2023
Pitzer College
An Ancient Thread Of “Inseparable Oneness”: A Theoretical Exploration Of Community And Kinship In Grassroots Environmental Justice Movements, Izzy Dean
Pitzer Senior Theses
This thesis arose from a particular fascination and frustration with the prescribed nuclear family unit and the competitive isolation that capitalism breeds within normative communities, particularly in the United States. In this paper, I use the approach of theoretical exploration combined with case study research to explore the role of community and kinship within grassroots environmental justice organizations. I initially wanted to explore examples of people and groups who found strength and resistance by engaging in “non-normative” or “queer” community-building practices. I have since redefined my topic as a broad theoretical exploration in which I cite theories of non-normativity, among …
Growing Culturally Relevant Food At The Urban Farm: An Examination Of Sovereign Foodways, Place-Making Practices, And Autonomous Identity-Shaping,
2023
Pitzer College
Growing Culturally Relevant Food At The Urban Farm: An Examination Of Sovereign Foodways, Place-Making Practices, And Autonomous Identity-Shaping, Dahlia Bess Zail
Pitzer Senior Theses
This paper examines channels of culturally relevant food production on the urban farm. It further investigates the connection between this production and the shaping of sovereign foodways, as well as how urban farm models provide space and resources for place-making practices and autonomous identity-shaping. This thesis shifts away from the notion of access to culturally relevant food and instead focuses on the multi-fold context that any food item takes on through its production, distribution, and consumption. This allows for a nuanced understanding of the role that culturally relevant food can play in immigrant foodways. Through case-studies at three urban farms …
Breakwater: Anti-Blackness In Geoscience Lessons From Long Beach, Ca,
2023
Claremont Colleges
Breakwater: Anti-Blackness In Geoscience Lessons From Long Beach, Ca, Christina Marsh
Pomona Senior Theses
Breakwaters are more than just physical structures that protect against storm surges and in the context of Long Beach, CA, my hometown, they are actualizations of economic, social, environmental, geologic, and policy challenges. Inspired by Trace: Memory, History, Race, and the American Landscape by Lauret Savoy, and Teaching to Transgress by bell hooks, I use an extended metaphor and autoethnographic approach to connect a chronology of my educational life to the physical structure of a breakwater. Where the breakwater also acts as a signifier of my personal experiences of seeing it, questioning its purpose, and not always finding an answer. …
Mapping The Political Shifts And Impacts Of The Climate Movement In The United States,
2023
Connecticut College
Mapping The Political Shifts And Impacts Of The Climate Movement In The United States, Kevin Rissmiller
Government and International Relations Honors Papers
This study explores how organizations within the climate change movement accrue political power and impact federal politics in the United States. It uses twelve semi-structured open-ended interviews with national climate activists at eight organizations to map shifts within the movement. These interviews are paired with additional qualitative analysis of legislative, media, and political rhetoric to evaluate the impact of the movement on American politics. The climate movement’s impacts (establishing the Green New Deal as a legitimate policy vision, shifting the Democratic Party to the left on climate, and the passage of the Inflation Reduction Act) were made possible by a …
Decolonial Foodurisms: From Plantations To Agricultural Spaces Of Intersectional Healing,
2023
Pitzer College
Decolonial Foodurisms: From Plantations To Agricultural Spaces Of Intersectional Healing, Dominic Arzadon
Pitzer Senior Theses
Considering the complex colonial histories and relationalities associated with agricultural food production, a reimagined future beyond the violent legacy of plantations is presented. Exploring land as the site for intersectional healing to take place, the symbiotic relationship between humans and food production is increasingly becoming a reality—a theoretical framework I propose called decolonial foodurisms (pronounced food-yoor-isms). Combining “food” and “futurism” to emphasize that our collective futures are predicated on food security and food justice for all and especially for marginalized and racialized communities with ancestral ties to agricultural violence, decolonial foodurisms aims to capture how intersectional healing can come into …
The Risk Of Climate Change And Extreme Weather,
2023
Sacred Heart University
The Risk Of Climate Change And Extreme Weather, Steven Michels Ed.
Political Science & Global Affairs Faculty Publications
No abstract provided.
How To Build A World: Stereoscopes, Tourism, And Land In Zion National Park,
2023
Scripps College
How To Build A World: Stereoscopes, Tourism, And Land In Zion National Park, Emma Duggleby
Scripps Senior Theses
This thesis fundamentally questions how representations of the environment and land impact how we relate to and live in it. By examining a set of 1925 stereoscope images of Zion National Park, it considers how use-based perceptions of place – structured by the entertainment of tourism and mass media – become part of the mundane practices of consumption. By revealing how these capitalist-colonial relationships to the land have been built through time, an analysis of these stereoscope slides reveals that these stories are anything but natural in hopes of making room for other stories to be built instead. The second …
Grain-Washing: The Issue With Corn Ethanol As A Sustainable Aviation Fuel,
2023
Claremont Colleges
Grain-Washing: The Issue With Corn Ethanol As A Sustainable Aviation Fuel, Emily J. Rinn
Scripps Senior Theses
Decarbonizing the aviation sector remains one of the most prevalent obstacles in reducing the United States’ significant contribution to global greenhouse gas emissions. Launched in 2021, the Sustainable Aviation Fuel (SAF) Grand Challenge aims to supply enough fuel to meet 100% of demand by 2050 through reducing its production costs and enhancing its sustainable practices. Corn ethanol feedstock has been proposed to make up as much as half of all SAF production in the 2030 benchmark. This thesis explores the assemblage of corn ethanol – from its true environmental impacts, role in the future SAF market, to research claiming corn …
Politics And The Criminal Enforcement Of Superfund,
2023
University of Nevada at Reno
Politics And The Criminal Enforcement Of Superfund, Joshua Ozymy, Melissa Jarrell Ozymy
Kentucky Journal of Equine, Agriculture, & Natural Resources Law
No abstract provided.
The Use Of A Habitat Quality Stress Index To Evaluate Stress As An Analog For Proximate Fitness In The American Crow Within A Matrix Of Landcover Characteristics To Assess Its Potential Contribution To Disease Etiologies,
2023
Antioch University of New England
The Use Of A Habitat Quality Stress Index To Evaluate Stress As An Analog For Proximate Fitness In The American Crow Within A Matrix Of Landcover Characteristics To Assess Its Potential Contribution To Disease Etiologies, Theodore Lee Grabarz
Antioch University Dissertations & Theses
All organisms occur within spatial and temporal environments to maximize proximate fitness (health) and thus life history outcomes. Previous work has examined the temporal and behavioral aspects of proximate fitness on life history outcomes particularly regarding highly perturbed environments (i.e., climate and land use change, resource extraction, agricultural erosion, etc.). My work focuses on the less examined spatial aspect of these perturbed environments. More specifically, this dissertation examines habitat selection and quality as the basis for understanding stress response (negative and positive feedback mechanisms) to environmental stressors within the larger context of regional or gamma (ɣ) biodiversity. Through the lens …
