Synthesis Of Geopolymer Using Coal Fly Ash And Corn Stover,
2024
Louisiana Tech University
Synthesis Of Geopolymer Using Coal Fly Ash And Corn Stover, Anu Paneru
Master's Theses
The development of each nation is dependent on its infrastructure, and nations are competing with others in infrastructure, especially in the construction of roadways, since they play a vital role in the economic and social development of the nation. The conventional materials used for road construction are cement and asphalt, which pose significant environmental challenges. This thesis explores the potential of fly ash (FA) and corn stover (CS) in synthesizing geopolymer, as an alternative material for the construction of roads. The study examines the impact of FA and CS percentages and the particle sizes of CS on the compressive strength, …
Communication—The Development Of A Stable And Practical Saturated Reference Electrode For Molten Chloride Salt Systems,
2024
Brigham Young University - Provo
Communication—The Development Of A Stable And Practical Saturated Reference Electrode For Molten Chloride Salt Systems, J. Marvin Torrie, Ranon Fuller, Devin Rappleye
Faculty Publications
A simply constructed, stable, Ni/Ni2+ saturated reference electrode (SRE) has potential to measure thermodynamic behavior of molten chloride salts more reliably. Like the Ag/Ag+ reference electrode (RE), the Ni/Ni2+ SRE is made of commercially available materials. Initial experiments in molten CaCl2 and LiCl show the Ag/Ag+ RE potential drifting two times faster than the SRE. Furthermore, experiments show the replicability of SREs by comparing two Ni/Ni2+ SREs with different compositions of NiCl2 which is supportive of saturated phase behavior.
Kinetic Studies Of Liquid Phase Hydrogenation Of Acetylene For Ethylene Production Using A Selective Solvent Over A Commercial Palladium/Alumina Catalyst,
2024
Missouri Uninversity of Science and Technology
Kinetic Studies Of Liquid Phase Hydrogenation Of Acetylene For Ethylene Production Using A Selective Solvent Over A Commercial Palladium/Alumina Catalyst, Humayun Shariff, Muthanna H. Al-Dahhan
Chemical and Biochemical Engineering Faculty Research & Creative Works
The Kinetics of Selective Hydrogenation of Acetylene in the Liquid Phase over a Commercial 0.5 Wt % Pd/Al2O3 Spherical Catalyst Was Investigated in a Stirred-Tank Basket Reactor. the Liquid Phase Was Acetylene Gas Absorbed in a Selective Solvent, N-Methylpyrrolidone (NMP). the Reactor Was Operated at a Pressure Range of 15-250 Psig with Temperature Varying from 60 to 100 °C using Different Catalyst Loadings to Identify the Suitable Operating Conditions. the Kinetic Experiments Were Conducted in the Absence of External Mass Transfer Resistances with the Liquid Phase in Batch Mode and the Gas Phase Being Continuous. the Initial Rates Varied Linearly …
Recent Progress And Perspectives Of Liquid Organic Hydrogen Carrier Electrochemistry For Energy Applications,
2024
University of South Carolina
Recent Progress And Perspectives Of Liquid Organic Hydrogen Carrier Electrochemistry For Energy Applications, Jinyao Tang, Rongxuan Xie, Parsa Pishva, Xiaochen Shen, Yanlin Zhu, Zhenmeng Peng
Faculty Publications
Amidst the global pursuit of clean and sustainable energy, the transition towards a hydrogen economy holds immense promise, yet is encumbered by significant storage challenges. Liquid organic hydrogen carrier (LOHC) electrochemistry emerges as a promising solution to enable efficient and sustainable hydrogen storage, meanwhile broadening the horizons of LOHCs for use as clean, renewable, and intense energy carriers to store and generate electricity. In this perspective, we embark on a review of recent trends and progress in LOHC redox electrochemistry, properties, and applications. We categorize electrochemically active, regenerable LOHCs into alcohols, amines, aromatic compounds, aminoxyl species, and others, based on …
Pet And Polyolefin Plastics Supply Chains In Michigan: Present And Future Systems Analysis Of Environmental And Socio-Economic Impacts,
2024
Michigan Technological University
Pet And Polyolefin Plastics Supply Chains In Michigan: Present And Future Systems Analysis Of Environmental And Socio-Economic Impacts, Utkarsh S. Chaudhari, Kamand Sedaghatnia, Barbara K. Reck, Kate Maguire, Anne T. Johnson, David Watkins, Robert M. Handler, Tasmin Hossain, Damon S. Hartley, Vicki S. Thompson, Alejandra Peralta, Jenny L. Apriesnig, David Shonnard
Michigan Tech Publications
Many actions are underway at global, national, and local levels to increase plastics circularity. However, studies evaluating the environmental and socio-economic impacts of such a transition are lacking at regional levels in the United States. In this work, the existing polyethylene terephthalate and polyolefin plastics supply chains in Michigan were compared to a potential future (‘NextCycle’) scenario that looks at increasing Michigan’s overall recycling rate to 45%. Material flow analysis data was combined with environmental and socio-economic metrics to evaluate the sustainability of these supply chains for the modeled scenarios. Overall, the NextCycle scenario for these supply chains achieved a …
A Rechargeable Metal-Co2 Battery Using Lower-Cost Materials,
2024
University of New Mexico - Main Campus
A Rechargeable Metal-Co2 Battery Using Lower-Cost Materials, Chris Fetrow
Nanoscience and Microsystems ETDs
High energy density, low-cost chemical conversion batteries are widely studied for their potential application to applications in which current battery technologies are unsuitable replacements for fossil fuel-powered systems. The demonstration of rechargeable chemical conversion batteries, and particularly batteries without the fatal flaw of high overpotential due to the difficulties inherent to chemical conversion reactions, is of great interest to further both this aim. In this work, a secondary Al-CO2 battery was demonstrated using a homogeneous aluminum iodide redox mediator to enable the battery’s discharge and charge at a high energy density and a low overpotential of 0.05 Volts. The operation …
Recent Progress And Perspectives Of Liquid Organic Hydrogen Carrier Electrochemistry For Energy Applications,
2024
University of South Carolina
Recent Progress And Perspectives Of Liquid Organic Hydrogen Carrier Electrochemistry For Energy Applications, Jinyao Tang, Rongxuan Xie, Parsa Pishva, Xiaochen Shen, Yanlin Zhu, Zhenmeng Peng
Faculty Publications
Amidst the global pursuit of clean and sustainable energy, the transition towards a hydrogen economy holds immense promise, yet is encumbered by significant storage challenges. Liquid organic hydrogen carrier (LOHC) electrochemistry emerges as a promising solution to enable efficient and sustainable hydrogen storage, meanwhile broadening the horizons of LOHCs for use as clean, renewable, and intense energy carriers to store and generate electricity. In this perspective, we embark on a review of recent trends and progress in LOHC redox electrochemistry, properties, and applications. We categorize electrochemically active, regenerable LOHCs into alcohols, amines, aromatic compounds, aminoxyl species, and others, based on …
Advancing Simultaneous Extraction And Sequential Single-Particle Icp-Ms Analysis For Metallic Nanoparticle Mixtures In Plant Tissues,
2024
Missouri University of Science and Technology
Advancing Simultaneous Extraction And Sequential Single-Particle Icp-Ms Analysis For Metallic Nanoparticle Mixtures In Plant Tissues, Lei Xu, Xingmao Ma, John Yang, Joel G. Burken, Paul Ki-Souk Nam, Honglan Shi, Hu Yang
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Engineered Nanoparticles (ENPs) Have Been Increasingly Used in Agricultural Operations, leading to an Urgent Need for Robust Methods to Analyze Co-Occurring ENPs in Plant Tissues. in Response, This Study Advanced the Simultaneous Extraction of Coexisting Silver, Cerium Oxide, and Copper Oxide ENPs in Lettuce Shoots and Roots using Macerozyme R-10 and Analyzed Them by Single-Particle Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). Additionally, the Standard Stock Suspensions of the ENPs Were Stabilized with Citrate, and the Long-Term Stability (Up to 5 Months) Was Examined for the First Time. the Method Performance Results Displayed Satisfactory Accuracies and Precisions and Achieved Low Particle Concentration …
Development Of Agar-Based Preformed Particle Gel For Water Control In High-Salinity Reservoirs,
2024
Missouri University of Science and Technology
Development Of Agar-Based Preformed Particle Gel For Water Control In High-Salinity Reservoirs, Ahmed Ben Ali, Reem Elaf, Abdulaziz A. Almakimi, Mohammed Saad, Ibnelwaleed A. Hussein, Baojun Bai
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
Oil Extraction Faces Challenges in Cost and Complexity Due to Excessive Water Production, Leading to Diminished Hydrocarbon Recovery. Preformed Particle Gels (PPGs) Hold Promise for Enhancing Oil Recovery and Sealing High-Permeability or Fractured Zones. However, Current PPGs Encounter Limitations in High-Temperature Reservoirs, Including Salt Sensitivity and Potential Hazards. to Address These Issues, We Propose Eco-Friendly PPGs Utilizing Agar Polysaccharides. Agar Backbones Grafted with Acrylamide (AM) and AM/N,N′-Methylenebis(AM) (MBA) Via Microwave-Assisted Techniques Resulted in Polyacrylamide Grafted Agar (Ag/PAM) and Cross-Linked Polyacrylamide Grafted Agar (Ag/PAMBA). Various Sizes (75 Μm to 1.18 Mm) Were Prepared to Accommodate Diverse Reservoir Porosities and Ensure Effective …
Development Of An Experimentally Validated Computational Fluid Dynamics Model For A Pbi Membrane-Based Anhydrous Hcl Electrolyzer,
2024
University of South Carolina
Development Of An Experimentally Validated Computational Fluid Dynamics Model For A Pbi Membrane-Based Anhydrous Hcl Electrolyzer, Kris Likit-Anurak, Hunter R. Teel, Ishwor Karki, Ben I. Howard, Brian C. Benicewicz, Sirivatch Shimpalee, Benjamin H. Meekins
Faculty Publications
We report the development of an experimentally-validated computational fluid dynamics (CFD) model for simulation of an anhydrous HCl electrolyzer. The experimental data from 3 membrane variants was used to provide kinetic and membrane parameters for the model. The model not only accurately simulates overall electrolyzer performance, but it also provides key insights into the transport phenomena within the electrolyzer. The model allows simulation of experimental parameters like high HCl flowrates and increased cell pressure that pose a high safety risk to researchers. The model shows hotspots in the temperature distribution that will need to be addressed by flow field modification …
Air Quality Assessment On Local And Hyperlocal Scales,
2024
Washington University in St. Louis
Air Quality Assessment On Local And Hyperlocal Scales, Zhiyao Li
McKelvey School of Engineering Graduate Student Theses & Dissertations
Air quality monitoring across local and hyperlocal scales has attracted increased attention from both the public and research community. There are several approaches such as passive samplers and low-cost air quality sensors, depending on the pollutant and measurement objectives. Local and hyperlocal air pollutant measurements help to characterize local emission sources such as traffic and industry, including separating these signals from large scale influences (e.g., urban and regional scales), and better understand how land use types and meteorology influence pollutant spatiotemporal patterns. Low-cost sensors (LCS) are now a popular approach to monitor several criteria pollutants (e.g., particulate matter (PM), ozone, …
Analysis Of The Effect Of Different Surface Preparation Methods On Corrosion Resistance And Adhesion Strength Of Astm A36 Steel Substrate With Surface Tolerant Epoxy Paint As Coating Material,
2024
Department of Metallurgical and Materials Engineering, Faculty of Engineering, Universitas Indonesia, Depok, 16424, Indonesia
Analysis Of The Effect Of Different Surface Preparation Methods On Corrosion Resistance And Adhesion Strength Of Astm A36 Steel Substrate With Surface Tolerant Epoxy Paint As Coating Material, Irwan Wijaya Santoso, Daffa Aqila, Rini Riastuti, Rizal Tresna Ramadhani
Journal of Materials Exploration and Findings
In the industrial world, to extend the service life of materials, protection methods are carried out to slow down the material's corrosion rate. The protection method that is often used is the coating method. The coating method is a protection method by coating the substrate material using a coating material to prevent contact between the substrate material and the environment. In this research, the substrate material used is ASTM A36 steel and the coating material used is Surface Tolerant Epoxy paint. The independent variable used in this study lies in the surface preparation method which consists of: solvent cleaning, hand …
Localized Sustained Release Of Copper Enhances Antitumor Effects Of Disulfiram In Head And Neck Cancer,
2024
Missouri University of Science and Technology
Localized Sustained Release Of Copper Enhances Antitumor Effects Of Disulfiram In Head And Neck Cancer, Juan Wang, Boxuan Li, Remy C. Cooper, Da Huang, Hu Yang
Chemical and Biochemical Engineering Faculty Research & Creative Works
Drug Repurposing Uses Approved Drugs as Candidate Anticancer Therapeutics, Harnesses Previous Research and Development Efforts, and Benefits from Available Clinically Suitable Formulations and Evidence of Patient Tolerability. in This Work, the Drug Used Clinically to Treat Chronic Alcoholism, Disulfiram (DSF), Was Studied for its Antitumor Efficacy in a Copper-Dependent Manner. the Combination of DSF and Copper Could Achieve a Tumor Cell Growth Inhibition Effect Comparable to Those of 5-Fluorouracil and Taxol on Head and Neck Cancer Cells. Both Bulk Dendrimer Hydrogel and Microsized Dendrimer Hydrogel Particles Were Utilized for the Localized Sustained Release of Copper in the Tumor Site. the …
Electrospun Shape Memory Fibers For Chronic Wound Surveillance,
2024
Syracuse University
Electrospun Shape Memory Fibers For Chronic Wound Surveillance, Avery Gunderson
Theses - ALL
Approximately 6 million patients suffer from chronic wounds each year. These wounds are highly susceptible to infection and subsequent biofilm formation. Biofilms are difficult to dislodge due to their protective extracellular matrix. Antibiotics cannot penetrate the biofilm matrix, so wound healing is often compromised. Current surveillance and treatment options, such as swabbing or dressings, are ineffective and often painful to the patient. Our approach is to employ a bacterial protease-responsive shape memory polymer (SMP) that combats biofilm formation and helps the healing process proceed. To aid in protease penetration and enhance wound dressing comfort, electrospinning can be used to produce …
Systematically Testing The Clustering Properties Of Peptoids For Use In Medical Implants,
2024
Syracuse University
Systematically Testing The Clustering Properties Of Peptoids For Use In Medical Implants, Steven Matthew Axelsen
Theses - ALL
Peptoids are peptidomimetics, in which the side chains are carried by the backbone nitrogen atoms instead of the alpha carbon, resulting in N-substituted glycine repeat units. The cationic peptoids have antimicrobial properties and can be sequestered into anionic hydrogels as coatings on implantable devices to prevent infection. In a recent study, our lab investigated the self-assembly of short peptoids with 6 to 12 repeat units. We showed that peptoids can cluster into large aggregates or remain as individual molecules depending on the net charge and nature of the sidechains. This study also demonstrated that the complexation of peptoids with microgels …
Insight Into The Application Of Engineered Phenol Polymer Nanocomposites For Geothermal Well Applications To Modify Fracture Permeability,
2024
University of New Mexico - Main Campus
Insight Into The Application Of Engineered Phenol Polymer Nanocomposites For Geothermal Well Applications To Modify Fracture Permeability, Fatemeh Hamidi
Civil Engineering ETDs
In enhanced geothermal systems, the efficient transfer of heat from the formation to the fluid circulating through the fracture network can be compromised when thermal short-circuiting occurs due to preferential flow through highly conductive fractures. This study introduces a pioneering approach using newly developed phenol polymer nanocomposites as an engineering solution to address the challenges associated with preferential flow in geothermal wells, which can lead to thermal short-circuiting. Multiple phenol polymer nanocomposites were formulated, incorporating aluminum oxide, COOH-functionalized graphitized multi-walled carbon nanotubes (MWCNTs), and graphene nanoparticles, each with a 0.5 wt.% polymer dosage. This research successfully modified the crosslinking process …
Investigation Of Hydropathy Of Proteins, Lipid-Modified Proteins, And Self-Defensive Biomaterials,
2024
Syracuse University
Investigation Of Hydropathy Of Proteins, Lipid-Modified Proteins, And Self-Defensive Biomaterials, Jingjing Ji
Dissertations - ALL
Molecular dynamics (MD) simulations serve as crucial tools for unraveling the underlying physical principles governing the structure and functionality of biological macromolecules. Experimental techniques provide valuable results, but sometimes it is quite difficult to explain phenomena at atomic and molecular levels. MD simulations investigate physical motion of atoms and molecules over microsecond time scale and compute the equilibrium properties. In this work, I investigated the hydropathy of proteins, lipid-modified proteins, and self-defensive biomaterials with atomistic MD simulations and coarse-grained (CG) MD simulations. The method, Protocol for Assigning a Residue's Character on a Hydropathy (PARCH) scale, is developed to characterize and …
Homomeric Tight Junction Strand Assembly Of Claudin Proteins,
2024
Syracuse University
Homomeric Tight Junction Strand Assembly Of Claudin Proteins, Patrick Matthew Marsch
Dissertations - ALL
Tight junctions, a form of cell junction, are utilized throughout the animal kingdom in one way or another. Tasked with facilitating a critical blockade between toxins and vital tissues while also allowing small crucial molecules to pass, the tight junction provides an important line of defense against disease. To build this barrier, various proteins with self-assemble within a cell membrane to then zipper with another cell membrane. The strand-like architecture and size & charge selective pore channels created within the barrier are chiefly governed by the claudin family of proteins. Without claudins present, the tight junction cannot form, and toxic …
Synthesis And Design Of High-Silica Pd-Containing Zeolites For The Catalytic Combustion Of Methane,
2024
Syracuse University
Synthesis And Design Of High-Silica Pd-Containing Zeolites For The Catalytic Combustion Of Methane, Jingzhi Liu
Dissertations - ALL
Greenhouse gases, notably carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), are principal contributors to global warming, leading to an incremental rise in Earth's atmospheric temperature. The escalation of these gases, primarily from fossil fuel combustion, deforestation, and industrial processes, enhances the radiative forcing mechanism, thereby trapping excessive solar heat within the atmosphere. Scientific inquiries into the spectral absorption properties and life span of these gases emphasize their varying impacts on Earth's thermal equilibrium. For instance, CO2, with its extensive atmospheric residency, brings a prolonged thermal influence, whereas CH4, while being the cleanest burning fossil fuel that generates far …
Engineering The Signal Resolution Of A Paper-Based Cell-Free Glutamine Biosensor With Genetic Engineering, Metabolic Engineering, And Process Optimization,
2024
Brigham Young University - Provo
Engineering The Signal Resolution Of A Paper-Based Cell-Free Glutamine Biosensor With Genetic Engineering, Metabolic Engineering, And Process Optimization, Tyler J. Free, Joseph P. Talley, Chad D. Hyer, Catherine J. Millar, Joel S. Griffitts, Bradley Charles Bundy
Faculty Publications
Specialized cancer treatments have the potential to exploit glutamine dependence to increase patient survival rates. Glutamine diagnostics capable of tracking a patient’s response to treatment would enable a personalized treatment dosage to optimize the tradeoff between treatment success and dangerous side effects. Current clinical glutamine testing requires sophisticated and expensive lab-based tests, which are not broadly available on a frequent, individualized basis. To address the need for a low-cost, portable glutamine diagnostic, this work engineers a cell-free glutamine biosensor to overcome assay background and signal-to-noise limitations evident in previously reported studies. The findings from this work culminate in the development …
