Development Of Phagotrophic Algae-Based Process For Conversion Of Waste Organics To Algae Lipids As Potential Feedstock For Biofuel,
2021
The University of Akron
Development Of Phagotrophic Algae-Based Process For Conversion Of Waste Organics To Algae Lipids As Potential Feedstock For Biofuel, Hannah Nelson
Williams Honors College, Honors Research Projects
Interest in sustainable feedstock for biofuel has encouraged research on the production of phagotrophic algae from bacteria using a two-staged continuous-flow system. Bacteria cultures were fed the content of a waste stream from The J.M. Smuckers Company containing high concentrations of sugar. In the design, the bacteria effluent overflowed into the algae tank which was kept at a set volume. Several methods were developed to assist in maintaining the system at steady state and minimize the impact from contaminants. A rigorous cleaning protocol was implemented for both tanks, effectively eliminating protozoa from the bacteria system. The protozoa were decreased in …
Evaluating The Thermoresponsive Properties Of Hydroxypropyl Cellulose Solutions For Smart Window Applications,
2021
The University of Akron
Evaluating The Thermoresponsive Properties Of Hydroxypropyl Cellulose Solutions For Smart Window Applications, Adam Reed
Williams Honors College, Honors Research Projects
With HVAC and building energy usage expected to increase, there is a strong need for autonomous thermal management solutions. In particular, there has been a growing interest in thermoresponsive (TR) smart windows that are activated by ambient temperature changes. Most TR smart windows contain a liquid solution between two panes. The goal of this research project was to develop a self-supporting smart window by forming a gel that maintained its TR properties. A gel is less prone to spilling in the case of window breakage. It was also desired to tune the phase transition to occur at environmentally relevant conditions …
Wetting Transition On 3d-Printed Featured Surface,
2021
The University of Akron
Wetting Transition On 3d-Printed Featured Surface, Hannah Pineault
Williams Honors College, Honors Research Projects
The primary objective of this research project was to gain a better understanding of surface characteristics to produce a long-lasting superhydrophobic or superhydrophilic surface. In other words, when will a droplet of water remain on top of a featured surface and when does the transition occur to water filling the grooves of the surface? This research focused on how to best fabricate porous structures that would stay completely dry at all times by preventing the liquid from penetrating. In particular, we followed the behaviors of water droplets placed on top of 3-D printed featured surfaces with various geometries and surface …
Comparison Of The Effects Of Hofmeister Ions On Transition Temperature Of Two Thermoresponsive Polymers,
2021
The University of Akron
Comparison Of The Effects Of Hofmeister Ions On Transition Temperature Of Two Thermoresponsive Polymers, Ashley Knight
Williams Honors College, Honors Research Projects
It has been hypothesized that poly(vinylmethylether) (PVME) could be used to replace poly(N-isopropylacrylamide) (pNIPAAM) in various thermoresponsive applications based on literature searches and previous lab experiments. PVME is cheaper and easier to process, and would make pNIPAAM applications more cost effective. In order to verify this, experimental data was gathered on the effects of four anions from the Hofmeister series (SO42-, Cl-, I-, and SCN-) on the lower critical solution temperature (LCST) of pNIPAAM and compared to previous data collected on PVME. Commercial pNIPAAM from Sigma Aldrich and Polysciences were used. The reported LCST range for pNIPAAM is …
Investigation Of Surface Charge Using Faraday Bucket Measurements: Analysis On Electrospun Polyvinylidene Fluoride Fiber Mats,
2021
The University of Akron
Investigation Of Surface Charge Using Faraday Bucket Measurements: Analysis On Electrospun Polyvinylidene Fluoride Fiber Mats, Ryan Kantenwein
Williams Honors College, Honors Research Projects
Piezoelectric polymer materials such as polyvinylidene fluoride exhibit beneficial properties for use in personal protective equipment (PPE) against viral contaminants and other foreign microparticles. The electrospinning process of this material allows for surface charge to develop over a controlled surface area. Kynar 761 at 10 wt% demonstrates increased surface charge after withstanding a flow of aerated NaCl particles from a TSI 8130 instrument. Utilizing voltage measurements from a Faraday bucket, 18 wt% Kynar 761 and MG-15 exhibit surface charge when undergoing an electrospinning process; however, Kynar MG-15 displays lower charge values than that of Kynar 761. Several critical factors such …
Simulation Of Water Loading In Filter Medium,
2021
The University of Akron
Simulation Of Water Loading In Filter Medium, Anthony Mole
Williams Honors College, Honors Research Projects
This research will model fluid flow through a filter plugged with water droplets using FlexPDE software. After simulations are run at various initial conditions, curves will be developed to correlate the permeability of the filter to variables like water droplet distribution and size.
Relating Modified Ergun's Equation To Hindered Settling Correlations,
2021
The University of Akron
Relating Modified Ergun's Equation To Hindered Settling Correlations, Ryan Zahniser
Williams Honors College, Honors Research Projects
Correlations were developed between the Modified Ergun’s and Hindered settling correlations under the condition of dense packing of particles in the bed. As the porosity of the slurry increases, so does the interference between particles in the solution which mimics the behavior of a packed or densely concentrated fluidized bed. The similarity between the two sets of conditions was modeled using mathematical equations to calculate settling velocities and pressure drops by means of the Hindered Settling correlations and Modified Ergun’s equation at porosities ranging from 0.4242 to 0.89. The results showed that a porosity of 0.52 and 0.009 ft particle …
The Effects And Motion Of An Air-Filled Cylinder Being Submerged In Water In The Axial Direction,
2021
The University of Akron
The Effects And Motion Of An Air-Filled Cylinder Being Submerged In Water In The Axial Direction, Ethan Davis
Williams Honors College, Honors Research Projects
Submarines operate on the basis of a difference in relative densities between of vessel and the surrounding fluid. This principle is based on the force balance that exists between the total buoyancy force and the force due to gravity. Previous work focuses on the neutral buoyancy depths and velocities of object that once submerged, their buoyancy force is a constant along with the force due to gravity. This work aims to better understand how the compression of air at various depths below the surface of the water contribute to the neutral buoyancy depth, velocity of the object as it rises, …
Increasing The Corrosion Protection Of Aisi 1008 Carbon Steel By Surface Treatment With Unmodified And Benzotriazole Modified Sol-Gel Films,
2021
The University of Akron
Increasing The Corrosion Protection Of Aisi 1008 Carbon Steel By Surface Treatment With Unmodified And Benzotriazole Modified Sol-Gel Films, Shane Thomas Kelliher
Williams Honors College, Honors Research Projects
The corrosion performance of sol-gel coated AISI 1008 carbon steel was investigated in 3.5 wt% NaCl solutions of pH 7, 9, and 12 using electrochemical measurements. A corrosion inhibitor, benzotriazole (BTA) was added to the sol-gel mixture and tested as a second, modified sol-gel coating. Sol-gel films adhered evenly to metal samples and were characterized by FTIR spectroscopy. Electrochemical Impedance Spectroscopy (EIS) showed an increase in polarization resistance from blank to sol-gel coated samples (600-18,800,000 ohms). Cyclic polarization (CPP) curves showed positive hysteresis loops for blank and unmodified sol-gel coated samples which increased at high pH following the backward potential …
Quantifying Mafenide Release From 3d Printed Phenylalanine-Coumarin Copolyester Scaffolds,
2021
The University of Akron
Quantifying Mafenide Release From 3d Printed Phenylalanine-Coumarin Copolyester Scaffolds, Jacob Seeh
Williams Honors College, Honors Research Projects
This project addressed burn wound healing through controlled release of the antibacterial drug mafenide encapsulated by a copolyster into 3D printed scaffolds. Scaffolds were printed at 25oC and 0.77-1 bar in a cross-hatch pattern with uniform thickness, distance between parallel layers, and diameter then photo-crosslinked. The number of scaffolds available for testing was limited by the amount of polymer that could be synthesized. A high-performance liquid chromatography method was developed specifically for this experiment and used to determine daily release of mafenide from the scaffold into a 2-mL phosphate buffer solution. During the first 24 hours a large …
Image Analysis Of Colloidal Systems For Pair And Triplet Correlations.,
2021
University of Louisville
Image Analysis Of Colloidal Systems For Pair And Triplet Correlations., Brianna Price
Electronic Theses and Dissertations
Interactions among colloidal particles drive stability of suspensions or the assembly of particles into larger superstructures such as agglomerates or crystals. Typically, colloidal interactions are modeled using pairwise interaction potential energies which consider the interactions between pairs of particles. However, additional particles can modulate pair potentials, leading models to predict incorrect behavior. To analyze the effects of three-body interactions on the structuring of colloidal systems, pair and triplet correlation functions are calculated from published experimental data. These correlation functions are then translated into empirical pair and triplet potentials of mean force, which are then used to model systems more accurately …
Synthesis Of Uio-66 Metal Organic Frameworks,
2021
University of Alabama in Huntsville
Synthesis Of Uio-66 Metal Organic Frameworks, Nicholas Johnston, Larissa Lagria
Summer Community of Scholars Posters (RCEU and HCR Combined Programs)
No abstract provided.
Brownian Dynamics Of Interacting Anisotropic Magnetic Nanoparticles,
2021
University of Alabama in Huntsville
Brownian Dynamics Of Interacting Anisotropic Magnetic Nanoparticles, Daniel Duke
Summer Community of Scholars Posters (RCEU and HCR Combined Programs)
No abstract provided.
Temporal Understanding Of The Conversion Of Normal Synovial Fibroblasts Into Osteoarthritic Fibroblasts,
2021
University of Alabama in Huntsville
Temporal Understanding Of The Conversion Of Normal Synovial Fibroblasts Into Osteoarthritic Fibroblasts, Danielle Mcdowell
Summer Community of Scholars Posters (RCEU and HCR Combined Programs)
No abstract provided.
The Effect Of Surface Topography On The Deposition Of Colloids,
2021
University of Alabama in Huntsville
The Effect Of Surface Topography On The Deposition Of Colloids, Mikhail Ramirez
Summer Community of Scholars Posters (RCEU and HCR Combined Programs)
No abstract provided.
Molecular Recognition Of Pet Depolymerization Products And Beta-Cyclodextrin,
2021
The University of Akron
Molecular Recognition Of Pet Depolymerization Products And Beta-Cyclodextrin, Thomas Palisin
Williams Honors College, Honors Research Projects
Using molecular recognition techniques to determine the binding constant of the host-guest relationships of the depolymerization products of polyethylene terephthalate (PET) and cyclodextrin species. The main method of data collection used was florescence spectroscopy. Using a titration method and measuring the florescence intensity, a nonlinear regression was used to determine the binding constant.
Lithium-Ion Battery Recycling Using Mineral Processing Methods,
2021
Michigan Technological University
Lithium-Ion Battery Recycling Using Mineral Processing Methods, Ruiting Zhan
Dissertations, Master's Theses and Master's Reports
The surges in the volume of the retired Li-ion batteries (LIBs) in future motivate Li-ion battery recycling R&D activities worldwide. Within the Li-ion batteries, the most valuable component is cathode active materials that consist of critical minerals and materials such as lithium, cobalt, nickel, manganese. The LIB recycling has been investigated at both the lab scale and industrial scale. There are three existing recycling methods, namely physical separation, pyrometallurgy, and hydrometallurgy. Physical separation methods sort individual battery components without changing materials’ physical properties, while both pyrometallurgical and hydrometallurgical recycling routes aim to recover valuable metals using a high-temperature process and …
Investigating The Effect Of E30 Fuel On Long Term Vehicle Performance,
Adaptability And Economic Feasibility,
2021
University of Nebraska - Lincoln
Investigating The Effect Of E30 Fuel On Long Term Vehicle Performance, Adaptability And Economic Feasibility, Adil Alsiyabi, Seth Stroh, Rajib Saha
Department of Chemical and Biomolecular Engineering: Faculty Publications
Due to the drawbacks associated with the use of petroleum derived fuels, the use of more sustainable fuel sources has garnered increasing attention in several sectors including road transportation. However, the transition away from gasoline is often hindered by the inability of currently operating vehicles to efficiently run under alternative fuels. Therefore, the logical short-term alternative is to transition to clean fuel sources including higher-ethanol fuel blends that are compatible with current fuel systems and spark-ignition engines. In this work, the long-term adaptability and economic feasibility of non-flex vehicles to consume a 30% ethanol (E30) fuel blend was investigated. Sixteen …
Periodicity In The Electrochemical Dissolution Of Transition Metals,
2021
Helmholtz-Institute Erlangen-Nfrnberg for Renewable Energy
Periodicity In The Electrochemical Dissolution Of Transition Metals, Florian D. Speck, Alexandra Zagalskaya, Vitaly Alexandrov, Serhiy Cherevko
Department of Chemical and Biomolecular Engineering: Faculty Publications
Extensive research efforts are currently dedicated to the search for new electrocatalyst materials in which expensive and rare noble metals are replaced with cheaper and more abundant transition metals. Recently, numerous alloys, oxides, and composites with such metals have been identified as highly active electrocatalysts through the use of high-throughput screening methods with the help of activity descriptors. Up to this point, stability has lacked such descriptors. Hence, we elucidate the role of intrinsic metal/oxide properties on the corrosion behavior of representative 3d, 4d, and 5d transition metals. Electrochemical dissolution of nine transition metals is quantified using online inductively coupled …
Chlorination As Drinking Water Disinfection Technique And Disinfection By Products: A Scientometric Analysis,
2021
Symbiosis International University
Chlorination As Drinking Water Disinfection Technique And Disinfection By Products: A Scientometric Analysis, Sapna Ramchandra Shinde, Sayali D. Apte Dr, Kanchan C. Khare Dr, Philipp Otter Mr
Library Philosophy and Practice (e-journal)
The Sustainable Development Goals (SDG) 2015, defined to achieve a better and more sustainable future, contains goal number 6 related to safe and affordable drinking water facility for all till 2030. The rural and remote areas in the developing countries predominantly face the scarcity of pathogen free drinking water leading to water borne diseases and deaths due to consumption of contaminated water indicating a need of advancement in the drinking water disinfection techniques. The paper discusses scientometric analysis of publication trends in chlorination as a popular disinfection techniques and research related to the Disinfection By Products (DBPs) that are produced …
