Engineering Lewis Acidic Materials For Biomass Conversion And Battery Applications.,
2022
University of Louisville
Engineering Lewis Acidic Materials For Biomass Conversion And Battery Applications., Md Anwar Hossain
Electronic Theses and Dissertations
My long-term goal is to develop catalytic systems to produce renewable energy for a sustainable society. The overall research objective of my dissertation is to advance understanding of Lewis acidic materials for (1) conversion of renewable lignin into phenolics and (2) enhanced cycling stability of lithium metal batteries to safely store renewable electricity from wind and solar, thereby laying the groundwork for our transition to a sustainable society. Petroleum is a conventional feedstock for current transportation fuels (gasoline, diesel, and jet fuels). However, petroleum is a finite resource and produces greenhouse gases (CO2 and CH4) upon processing, …
Materials And Interfaces For Electrocatalytic Hydrogen Production And Utilization.,
2022
University of Louisville
Materials And Interfaces For Electrocatalytic Hydrogen Production And Utilization., Alexander Jiya Gupta
Electronic Theses and Dissertations
Mass industrialization over the last few centuries has created a global economy which is dependent upon fossil fuels to satisfy an exponentially increasing demand for energy. Aside from the possible depletion of this finite resource, the combustion of fossil fuels releases greenhouse gases into the atmosphere which cause the global temperature to rise – a phenomenon which has already begun to create geologic and geopolitical instability and shows no signs of abatement. One proposed method to rid humanity of its dependence on fossil fuels is to use green hydrogen as an energy carrier. In this scheme, excess electricity from a …
The Aiche Student Design Competition: Modular Distributed Gas-To-Liquids (Gtl) Synthesis,
2022
University of Alabama in Huntsville
The Aiche Student Design Competition: Modular Distributed Gas-To-Liquids (Gtl) Synthesis, Abigail Bozarth, Jason Mote, Revathi Panuganti, Fausat Isu
Honors Capstone Projects and Theses
No abstract provided.
Comparison Of Bio-Mass To Bio-Oil Reactor Systems: Direct Conversion Vs. Companion Coal Gasification,
2022
Western Michigan University
Comparison Of Bio-Mass To Bio-Oil Reactor Systems: Direct Conversion Vs. Companion Coal Gasification, Luci Evans
Honors Theses
The purpose of this project was to define, design, and optimize the economic feasibility of the production of bio-oil from a direct conversion of biomass to bio-oil using fast pyrolysis and a secondary side reaction of the production of a syngas from coal gasification. In the end, a combined process of these two was created to show the new strengths and more efficient options to produce a desired product within a budget. The main objectives of this project were to research the economic feasibility of the biomass and bio-oil industry, obtain a market survey, design two process flow diagrams showing …
Synergistic Enhancement Of Formic Acid Electro-Oxidation On Ptxcuy Co-Electrodeposited Binary Catalysts,
2022
The British University in Egypt
Synergistic Enhancement Of Formic Acid Electro-Oxidation On Ptxcuy Co-Electrodeposited Binary Catalysts, Yaser M. Asal, Ahmad M. Mohammad, Sayed S. Abd El Rehim, Islam M. Al-Akraa
Chemical Engineering
A propitious binary catalyst composed of Pt and Cu which were electrodeposited simultaneously onto a glassy carbon (GC) substrate was recommended for the formic acid (FA) electro-oxidation reaction (FAOR); the principal anodic reaction in the direct FA fuel cells (DFAFCs). The simultaneous co-electrodeposition of Pt and Cu in the catalyst provided an opportunity to tune the geometric functionality of the catalyst to resist the adsorption of poisoning CO at the Pt surface that represented the major impediment for DFAFCs marketing. The catalytic activity of the catalyst toward FAOR was significantly influenced by the (Pt4+/Cu2+) molar ratio of the electrolyte during …
Heteroaggregation Of Lignin-Zein Nanoparticles: Effects Of Relative Size And Concentration,
2022
Louisiana State University
Heteroaggregation Of Lignin-Zein Nanoparticles: Effects Of Relative Size And Concentration, Yada Chulakham
LSU Master's Theses
Nanotechnology has become an advanced tool for manufacturing materials of the future. As the size of a material is reduced to a nanoscale, its surface area to volume ratio increases drastically, and its surface property becomes size dependent. This allows scientists to make use of unique properties that nanomaterials have to offer to create novel materials that otherwise could not have been achieved in meter-scale materials. As more industrial companies have planned to incorporate different types of nanomaterials into their products, it is undeniable that some of these nanomaterials will be released to the environment. Such possibility has led to …
Castor Oil Conversion To Biodiesel: A Process Simulation Study,
2022
The British University in Egypt
Castor Oil Conversion To Biodiesel: A Process Simulation Study, Yaser M. Asal Mr, Islam M. Al-Akraa, Ahmad M. Mohammad, Razan Aymen
Chemical Engineering
The aim of this study is to highlights the importance to shift from the use of traditional fossil fuels to biodiesel as a clean energy source. A simulation study has been conducted using ASPEN HYSIS software for the biodiesel production form castor oil. The simulation was run and the properties of the produced biodiesel were highlighted. The optimum conditions resulted in 88 % conversion.
Prototype Development For Fabric Sodium Sensor,
2022
The University of Akron
Prototype Development For Fabric Sodium Sensor, Mary Nicodemus, Dunia Jaffal, Shelby Daniels
Williams Honors College, Honors Research Projects
This project is designed to refine a process for developing sodium-selective nylon fabric sensors to be used for reading sodium concentrations in sweat from the human body through a series of quality control and on-body testing experiments. The intention is to have a refined process to make reproducible sensors that are turned into consistently working prototypes for future mass production. There are three essential steps in developing a working prototype: sensor synthesis, sensor testing, and sensor validation. Once all three steps are completed, consistent methods will be defined for turning nylon into sensors and then into prototypes, calibrating the prototypes, …
Comparing Galvanic Corrosion Rates Predicted From Polarization Curves With Empirical Data From A Carbon Steel And Monel Couple For A Various Geometries,
2022
The University of Akron
Comparing Galvanic Corrosion Rates Predicted From Polarization Curves With Empirical Data From A Carbon Steel And Monel Couple For A Various Geometries, Michael Hinnebusch
Williams Honors College, Honors Research Projects
The objective of this investigation was to compare the galvanic corrosion rate of carbon steel C1018 and Monel K-500 alloy in a bolt and plate geometry to that derived using Tafel plots. This was achieved using carbon steels sheets of steel with a pair of with varying the number of Monel bolts and varying spacing. It was found that the carbon steel plates do not corrode uniformly. This can create issues when using Polarization curves to assume galvanic corrosion rate of a carbon steel and Monel system. The geometry of the bolts can further affect this corrosion rate and make …
Application Of Sla 3d Printing For Polymers,
2022
The University of Akron
Application Of Sla 3d Printing For Polymers, Taylor Wilson
Williams Honors College, Honors Research Projects
Stereolithography is a type of 3D printing that allows liquid photopolymer resin to be cured into layers that make up a 3D object. Creation of such resins for these purposes can require a significant amount of time to test and develop, and commercial resins also require some amount of testing for printer settings before use. This paper reviews how stereolithography works, the materials used, and experimentation done to compare the resin properties to the determined curing times. Using several commercially available resins, varying base exposure and layer exposure times were used to determine the lowest possible curing time that gave …
Retention And Stability Of Polystyrene Sulfonic Acid And Polyethylene Glycol Anti- Fouling Films With 3-Aminopropyltriethoxysilane Coupling Agent,
2022
The University of Akron
Retention And Stability Of Polystyrene Sulfonic Acid And Polyethylene Glycol Anti- Fouling Films With 3-Aminopropyltriethoxysilane Coupling Agent, Brian Cameron
Williams Honors College, Honors Research Projects
Fouling is a process where particles, proteins, or microorganisms will accumulate onto a material [2]. This can lead to biofilms in medical implants, which can trap and create drug resistant bacteria [5]. Due to this, the study and creation of anti-fouling polymeric films that is stable in aqueous environments is essential. The goal of this study is to utilize APTES to retain the already studied PSS-PEG anti-fouling films. The films that are created is a thermally crosslinked network of the polystyrene sulfonic acid (PSS) and polyethylene glycol (PEG) with differing mass fractions (75- 25 and 55-45 PSS-PEG). To retain the …
Extraction Of Melanin From Black Knot Fungus: Optimization And Applications,
2022
The University of Akron
Extraction Of Melanin From Black Knot Fungus: Optimization And Applications, Amara Davis
Williams Honors College, Honors Research Projects
The goal of this research project was to optimize the extraction of melanin from black knot fungus and to analyze possible applications of the extracted melanin. An extraction method that was previously created was examined for possible improvements. Improvements that were studied include the elimination of steps in the extraction process while obtaining the same quality of product, examining options for machinery that could be used to increase production rate when moved to a production plant setting, and optimize the concentrations of the raw materials that are used in the extraction for possible reduction of cost without compromising yield or …
Development Of Co2 Capture Method Via Polyurethane-Amine Sorbent In Vsa,
2022
The University of Akron
Development Of Co2 Capture Method Via Polyurethane-Amine Sorbent In Vsa, Samantha Starkey, David S. Rinehart
Williams Honors College, Honors Research Projects
With increases in extreme weather and global temperatures, research is delving into CO2 capture to help reverse climate change. This project explored utilizing vacuum swing adsorption (VSA) for CO2 capture and release. VSA uses a sorbent, in this case amine sorbents, to capture CO2 from air and subsequently removes it via vacuum. Polyurethane (PU) foam was investigated as a potential matrix for amine sorbents to increase exposure of CO2 capturing amines to air by utilizing its porous structure. PU mixing studies were conducted to determine the feasibility of mixing PU foam with amines and coating foams …
Reverse Cationic Flotation Of Hematite,
2022
Michigan Technological University
Reverse Cationic Flotation Of Hematite, Natalia Parra Alvarez
Dissertations, Master's Theses and Master's Reports
The reverse cationic flotation of hematite is the most common method to process hematite ores. The goal of this research is to understand the impact of fundamental water and surface effects to enable the optimization of the flotation process. At present, reverse cationic flotation is performed using a single chemical as both collector and frother. Excessive amounts of frother or collector should lead to diminished performance. This research investigates this phenomenon by replacing some of the collector with frothers. It was found that flotation recovery can be improved up to 2.5wt% via 10% replacement with methyl isobutyl carbinol (MIBC). Since …
Biodiesel Production From Castor Oil: Mixing Optimization During Transesterification,
2022
The British University in Egypt
Biodiesel Production From Castor Oil: Mixing Optimization During Transesterification, Yaser M. Asal Mr, Islam M. Al-Akraa, Ahmad M. Mohammad, Hassan E. Hisham
Chemical Engineering
With the growing warning for accrediting the traditional combustion of fossil fuels for energy production, not only for their limited supply but also for their environmental risks (air pollution, climate change, …. etc), it became necessary to realize alternative greener and abundant sources for energy. Instead, the interest to sustain biodiesel for the energy production has recently been renewed as a replacement for petroleum diesel in conventional diesel engines. This was due to its renewable nature, low toxicity, high degradability and unique physical properties (high flash points & lubrication). Castor oil, in particular, appeared promising for biodiesel production with extremely …
Investigation Of Reactions Occurring In Municipal Solid Waste Residues,
2022
CUNY City College
Investigation Of Reactions Occurring In Municipal Solid Waste Residues, Tasnuva T. Moutushi
Dissertations and Theses
Each year more than 290 million tons of municipal solid waste (MSW) is generated in the U.S. Understanding the reactions occurring in waste during disposal, transport, and storage is important to move towards an integrated waste management strategy. Recently some landfills in the U.S. have been reported to exceed the regulatory temperature range, causing numerous regulatory challenges. The reason for this phenomenon is still unidentified. In addition, the co-disposal of the MSW ash in landfills lead to various reactions which can impact the landfill environment. Understanding the reactions occurring in the MSW and in ash is essential to minimize and …
Advanced Process Modeling And Optimization Of Amine-Based Carbon Capture Process,
2022
West Virginia University
Advanced Process Modeling And Optimization Of Amine-Based Carbon Capture Process, Paul Jide Terhemba Akula
Graduate Theses, Dissertations, and Problem Reports (ETD)
With the rise of carbondioxide (CO2) concentration in the atmosphere to more than 400 parts per million (ppm), research efforts have been focused on achieving net-zero carbon emission technologies. Post-combustion CO2 capture (PCC) is a key strategy in reducing CO2 emissions. Amine-based CO2 capture is the baseline technology for retrofitting existing power stations. However, the integration of amine-based PCC technology with power plants to reduce greenhouse gas emissions incurs a high energy penalty, decreasing a powerplant’s efficiency by about 23 percentage points. Understanding the capture plant dynamics plays an important role in its technical and economic performance. Rigorous models are …
Itraconazole Nanocomposites Prepared Via Rotary Evaporator Drying Of Nanomilled Suspensions,
2021
New Jersey Institute of Technology
Itraconazole Nanocomposites Prepared Via Rotary Evaporator Drying Of Nanomilled Suspensions, Alexander Santos Coelho
Theses
The aim of this study is to explore the feasibility of rotary evaporation for drying wetmilled drug suspensions as a novel approach to produce drug nanocomposites that exhibit fast redispersion and immediate drug release. To this end, the physical stability of the nanomilled itraconazole (drug) suspensions, a.k.a., nanosuspensions, during the milling and storage; the drying of the itraconazole nanosuspensions via the rotary evaporator; and the type/loading of various polymers/surfactants (dispersants) on aqueous redispersion and drug release from the nanocomposites were examined. Our results suggest that smaller drug particle size, owing to nanomilling, and smaller nanocomposite particle size, owing to optimized …
An Introductory Study Of Coal Fly Ash Enhancement For Heavy Metal Removal In Wastewater Treatment.,
2021
University of Louisville
An Introductory Study Of Coal Fly Ash Enhancement For Heavy Metal Removal In Wastewater Treatment., Samuel T. Romes
Electronic Theses and Dissertations
Coal Combustion Products are the materials that remain after pulverized coal is burned to generate electricity. The fine portion, fly ash, has many re-use capabilities across various industries. Most recent data shows that approximately 60% of fly ash produced in the United States was used with the largest re-use being concrete additives. This work aims to enhance fly ash via hydrothermal treatment in order to expand the re-use capabilities of the material. These materials were tested as adsorbents for heavy metal removal from wastewater samples. The metals tested for removal were Copper (II) Acetate, Cadmium Chloride, Boric Acid, Sodium Selenite, …
Scalable Synthesis Of Alumina Nanowires By Wet Chemical Method.,
2021
University of Louisville
Scalable Synthesis Of Alumina Nanowires By Wet Chemical Method., Luis N Moreno
Electronic Theses and Dissertations
To satisfy an increasing demand for large-scale processes for producing alumina nanomaterials, a wet chemical method was evaluated. A potassium salt precursor was combined with aluminum to produce alumina – based nanowires. Compared with current methods such as thermal oxidation, sol-gel, and laser ablation, this method is highly scalable due to relatively low energy requirements and the ability to carry out the primary reaction under ambient conditions. The nanowire samples were evaluated using SEM, XRD, BET, and TEM to confirm morphology, phases present, and surface area. A porous nanowire structure was confirmed which has a BET surface area of 324.6 …
