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Articles 181 - 210 of 222
Full-Text Articles in Chemical Engineering
The Effect Of The Local Refractive Index On The Spectral Properties Of Gold Nanoparticle Arrays, Justin Norman
The Effect Of The Local Refractive Index On The Spectral Properties Of Gold Nanoparticle Arrays, Justin Norman
Chemical Engineering Undergraduate Honors Theses
Gold nanoparticle arrays exhibit extraordinary spectral properties useful to a wide variety of applications including biomolecular sensing, alternative energy, and informatics. The spectral properties of these arrays depend on the array geometry (particle size and spacing) and the surrounding environment (refractive index). In this thesis, a thorough map of the parameter space describing the spectral properties of square, gold nanoparticle arrays is developed in conjunction with a fundamental theoretical description of the phenomena that govern these properties.
Hydrocarbon Removal, Elizabeth Ashley
Hydrocarbon Removal, Elizabeth Ashley
Chemical Engineering Undergraduate Honors Theses
A group of Chemical Engineers romoved hydrocarbons from a surrogate flowback solution. The solution contained polar and non-polar hydrocarbons that had to be removed to protect an RO membrane. The full scale solution would use UF to remove the non-polar hydrocarbons and GAC beds to remove the soluble hydrocarbons.
Optimal Production Of Biobutanol Via Hydrogenation Of Butyric Acid, Sarad Panta
Optimal Production Of Biobutanol Via Hydrogenation Of Butyric Acid, Sarad Panta
Chemical Engineering Undergraduate Honors Theses
Butanol is a primary alcohol most commonly used industrially as a solvent. It is largely produced petrochemically using fossil fuel feedstocks. The global butanol market has steadily increased in recent years and is projected to continue increasing at an annual rate of 3.2%. Additionally, the possibility of introducing butanol to the fuel market presents the opportunity to further grow the industry. Because of the increasing demand and its production from fossil fuels, there is a need to manufacture butanol more sustainably and efficiently to help the environment and improve the world economy. Currently, biobutanol is not produced commercially; however, its …
Hollow Fiber Ultrafiltraion And Granulated Activated Carbon Hydrocarbon Removal For Reverse Osmosis Pretreatment, Hayden Dwyer
Hollow Fiber Ultrafiltraion And Granulated Activated Carbon Hydrocarbon Removal For Reverse Osmosis Pretreatment, Hayden Dwyer
Chemical Engineering Undergraduate Honors Theses
Hydraulic Fracturing is becoming an increasing prevalent technology in present society due its ability to produce cheap, clean natural gas as a viable fuel source. One public image draw back to hydraulic fracturing, however, is that it uses large volumes of water. This water returns to surface after stimulation laden with hydrocarbons and other material from down hole. The proposed and test method to treat this flowback water was reverse osmosis membranes with granulated activated carbon and ultrafiltration serving as a pretreatment. This proved to be a very successful method in treating hydraulic fracturing flowback water.
Micro Hydroelectric Power Generation, Roberto Arraya Saenz
Micro Hydroelectric Power Generation, Roberto Arraya Saenz
Chemical Engineering Undergraduate Honors Theses
MICRO-HYDRO ELECTRIC POWER GENERATION Roberto Arraya Department of Chemical Engineering – Honors Thesis ABSTRACT A major industrial water user in New Mexico discharges approximately 3.8 million gal of wastewater per day. The topology of the site provides an elevation difference of about 150 ft between the plant site and the entrance to the municipal sewage line; this flow and elevation difference is sufficient to produce about 40 kW of electrical power using a water turbine/electrical generator set to extract power from the flowing stream. This report includes designs and economic analyses for two distinct cases. One case is based on …
Microhydroelectric Power Generation, Aaron Hughes
Microhydroelectric Power Generation, Aaron Hughes
Chemical Engineering Undergraduate Honors Theses
A major industrial water user in New Mexico discharges approximately 3.8 million gal of wastewater per day. The topology of the site provides an elevation difference of about 150 ft between the plant site and the entrance to the municipal sewage line; this flow and elevation difference is sufficient to produce about 40 kW of electrical power using a water turbine/electrical generator set to extract power from the flowing stream. This report includes designs and economic analyses for two distinct cases. One case is based on the written premises of the task; whereas, a second case is based on a …
Micro Hydro-Electric Power Generation, Travis Rose
Micro Hydro-Electric Power Generation, Travis Rose
Chemical Engineering Undergraduate Honors Theses
A major industrial water user in New Mexico discharges approximately 3.8 million gal of wastewater per day. The topology of the site provides an elevation difference of about 150 ft between the plant site and the entrance to the municipal sewage line; this flow and elevation difference is sufficient to produce about 40 kW of electrical power using a water turbine/electrical generator set to extract power from the flowing stream. This report includes designs and economic analyses for two distinct cases. One case is based on the written premises of the task; whereas, a second case is based on a …
Formation Of Molecularly Imprinted Polymer Matrices Using, William Erwin
Formation Of Molecularly Imprinted Polymer Matrices Using, William Erwin
Chemical Engineering Undergraduate Honors Theses
This study serves as a proof of concept that a poly(acrylonitrile-co-acrylic acid) may be used to form an chiral selective polymer membrane for discrimination of L-tryptophan from racemic tryptophan. Due to the unavailability of necessary equipment, a polymer membrane was not tested, rather, two experiments were run in conjunction; (1) A membrane of L-tryptophan imprinted P(AN-co-AA) was cast and tested on a scanning electron microscope to determine the membrane density, and (2) Imprinted polymer was ground and tested for absorption of L-Tryptophan by finding circular dichroism and concentration for different samples. It was found that it is feasible that P(AN-co-AA) …
Green Ro Pretreatment, Elizabeth Fullerton
Green Ro Pretreatment, Elizabeth Fullerton
Chemical Engineering Undergraduate Honors Theses
The use of sea water desalination to produce potable water for maritime vessels is essential for eliminating storage of potable water. Reverse osmosis (RO) is the technology of choice for desalination purposes; however, raw seawater must undergo pretreatment to avoid rapid fouling and plugging of RO membranes and modules. Current pretreatment technology is effective in the open ocean but in coastal regions involves frequent replacement of filter cartridges and increased maintenance costs. The standard pretreatment process consists of 20 μm cartridge filters and 3 μm cartridge filters in series. Several technologies were considered as options for improving the current pretreatment …
Hollow Fiber Membranes In Increased Algae Growth For Biobutanol Production, Allison Mcatee
Hollow Fiber Membranes In Increased Algae Growth For Biobutanol Production, Allison Mcatee
Chemical Engineering Undergraduate Honors Theses
Algae are a unique and remarkable species of plant that is capable of thriving on land deemed useless for the cultivation of food crops. They also breathe in the harmful greenhouse gas, carbon dioxide. As the fastest living organism to complete a life cycle, algae is the single most effective user of carbon dioxide in the world thus making it an important ally for diminishing the threat of global warming. Furthermore, algae are comprised of high concentrations of lipids, rendering it an appealing option for use in biodiesel production, specifically butanol. Increasing the algae’s supply of carbon dioxide gas causes …
Using Capillary Electrophoresis To Detect Amyloid Protein Aggregation, Jennifer Kurtz
Using Capillary Electrophoresis To Detect Amyloid Protein Aggregation, Jennifer Kurtz
Chemical Engineering Undergraduate Honors Theses
Alzheimer’s disease (AD) is the leading cause of dementia accounting for ½ to ¾ of all cases. AD is characterized by a progressive loss of cognitive function over a span of 10 years, ultimately ending in death. The main possible cause of AD being researched is the formation of soluble, oligomer amyloids. Amyloids are proteins that misfold and aggregate in the brain causing potent neurotoxic effects on neurons in the brain. Microchip electrophoresis and capillary electrophoresis are two potential methods of determining the level of amyloid aggregation. In order to detect at physiological concentrations, covalent dyes must be used to …
Visual, Spectrophotometric, And Colorimetric Measurement Of Red Wine And Wine Blends, Zachary Fricke
Visual, Spectrophotometric, And Colorimetric Measurement Of Red Wine And Wine Blends, Zachary Fricke
Chemical Engineering Undergraduate Honors Theses
Partially due to prevalence and popularity around the world, much research has been done in the field of enology and wine analysis. The visual aspect of wine is one of the key features of wine. This research focused on how blending and storage affected the color and composition of wine. Visual, sensory, color, and composition data were collected. Three primary red wine varietals (Cabernet Sauvignon, Merlot, and Zinfandel) and seven blends were analyzed for color, acidity, polymeric color, and optical density. The ten wine treatments were composed based on a mixture design model. The color and composition results were compared …
Clean Energy Water Disinfection For Small Rural Remote Communities, Nathan Bearden
Clean Energy Water Disinfection For Small Rural Remote Communities, Nathan Bearden
Chemical Engineering Undergraduate Honors Theses
The University of Arkansas competed in the 2011 Waste-Management Education and Research Consortium (WERC) competition. The U of A team participated in Task 7, which was titled “Clean Energy Water Disinfection for Small, Remote Rural Communitiesâ€. The task looks for a solution to a continuing problem throughout the world: disinfecting water. The task’s problem statement was to develop and a standalone disinfection system that could be used for a small community. It will need at least 3000 gallons of water per day. The solution must address only bacterial disinfection and must be powered by a non-fossil based energy source. Other …
Integration Of Ce-Sscp In Genetic Analysis: Fabrication And Optimization Of The Polymer Matrix, Hannah Lintag
Integration Of Ce-Sscp In Genetic Analysis: Fabrication And Optimization Of The Polymer Matrix, Hannah Lintag
Chemical Engineering Undergraduate Honors Theses
Genetic analysis has become an essential aspect in the field of biological research. Genetic material contains an abundance of information that can be harnessed, from the pathological study of diseases to the identification of algal species used for alternative fuel. The detection of genetic species and/or their mutated counterparts is an approach that still warrants improvement, however. Capillary electrophoresis-single strand conformation polymorphism (CE-SSCP) offers a rapid and highly-reproducible means to detect alterations in genetic material. In this project, its implementation in the field of genetic studies as a way to detect mutations in hereditary diseases and identifying species via genetic …
Process And Automation Design For The Construction Of A Fully Automated Biofuel Production Unit, Kylan Rakestraw
Process And Automation Design For The Construction Of A Fully Automated Biofuel Production Unit, Kylan Rakestraw
Chemical Engineering Undergraduate Honors Theses
Phase I investigated a method for producing butanol from algae using a novel automated hydrolysis, fermentation, and separation process. The Phase I research team sought to experimentally optimize individual steps and parameters of the process, design and build an automated unit to produce fuel-grade butanol from algae in a batch process, evaluate the sustainability and large scale economics of the process, and design an outreach program encouraging energy and environmental awareness centered around K-12 students. The team used macroalgae samples obtained through the generosity of the City of New York from Jamaica Bay to test the equipment and viability of …
Biodiesel Production From Waste Algae Through Supercritical Methanol And Solid Catalysts, Alexander Lopez
Biodiesel Production From Waste Algae Through Supercritical Methanol And Solid Catalysts, Alexander Lopez
Chemical Engineering Undergraduate Honors Theses
The need for alternate fuels continues to rise as fossil fuel reserves decline, and the effects of harmful fuel emissions on the environment begin to take its toll. One alternate fuel that has great potential is biodiesel. Biodiesel is a non-petroleum based fuel composed of alkyl esters from feedstocks. Using biodiesel as an alternate fuel source has a variety of advantages over traditional petroleum diesel, including producing no SOx emissions and low COx emissions. Another important advantage of biodiesel is that it can be produced from a wide variety of feedstocks. Biodiesel processes using waste cooking oil, animal fats, and …
Algae To Butanol: The Design, Construction, And Implementation Of An Automated Sugar-To-Fuel Process, Elizabeth Bevan
Algae To Butanol: The Design, Construction, And Implementation Of An Automated Sugar-To-Fuel Process, Elizabeth Bevan
Chemical Engineering Undergraduate Honors Theses
Phase I investigated a method for producing butanol from algae using a novel automated hydrolysis, fermentation, and separation process. The Phase I research team sought to experimentally optimize individual steps and parameters of the process, design and build an automated unit to produce fuel-grade butanol from algae in a batch process, evaluate the sustainability and large scale economics of the process, and design an outreach program encouraging energy and environmental awareness centered around K-12 students. The team used macroalgae samples obtained through the generosity of the City of New York from Jamaica Bay to test the equipment and viability of …
Cost Efficient Method Of Pumping Water For Small, Remote Rural Communities, James Hudson
Cost Efficient Method Of Pumping Water For Small, Remote Rural Communities, James Hudson
Chemical Engineering Undergraduate Honors Theses
Many technologies are used for water disinfection. Chlorine, iodine, and ozone are some chemical methods of water disinfection. Filtration, including microfiltration, ultrafiltration, and reverse osmosis, is used to remove bacteria. In addition to chemical and filtration technologies, one can disinfect water using UV irradiation, ultrasonic treatment, electrolysis, solar disinfection, and slow sand filtration.
Currently, there are few solutions being employed in third world settings for communities. The current solutions are either for one household or are part of an existing infrastructure and therefore are not portable. Slow sand filtration is used successfully to provide potable water for individual households. Tablet …
Extraction Of Butanol By Continuous Pervaporation Of A Two-Stage Fermentation, Kelly Meek
Extraction Of Butanol By Continuous Pervaporation Of A Two-Stage Fermentation, Kelly Meek
Chemical Engineering Undergraduate Honors Theses
Within this research a fermentation broth is used that has been developed first from the continuous fermentation of algal sugars to organic acids with Clostridium tyrobutyricum, followed by the continuous fermentation of the organic acids to butanol using Clostridium saccharoperbutylacetonium. The two-stage fermentation has the potential to increase the butanol selectivity from 60% by weight with the traditional ABE process to as high as 100% with the 2-stage process.
Conversion Of Algal Sugars To Butanol In A Novel Automated Process, Jill Ivey
Conversion Of Algal Sugars To Butanol In A Novel Automated Process, Jill Ivey
Chemical Engineering Undergraduate Honors Theses
Phase I investigated a method for producing butanol from algae using a novel automated hydrolysis, fermentation, and separation process. The Phase I research team sought to experimentally optimize individual steps and parameters of the process, design and build an automated unit to produce fuel-grade butanol from algae in a batch process, evaluate the sustainability and large scale economics of the process, and design an outreach program encouraging energy and environmental awareness centered around K-12 students. The team used macroalgae samples obtained through the generosity of the City of New York from Jamaica Bay to test the equipment and viability of …
Clean Energy Water Disinfection International Environmental Education Design Contest, Howard Heffington
Clean Energy Water Disinfection International Environmental Education Design Contest, Howard Heffington
Chemical Engineering Undergraduate Honors Theses
Many technologies are used for water disinfection. Chlorine, iodine, and ozone are some chemical methods of water disinfection. Filtration, including microfiltration, ultrafiltration, and reverse osmosis, is used to remove bacteria. In addition to chemical and filtration technologies, one can disinfect water using UV irradiation, ultrasonic treatment, electrolysis, solar disinfection, and slow sand filtration.
Currently, there are few solutions being employed in third world settings for communities. The current solutions are either for one household or are part of an existing infrastructure and therefore are not portable. Slow sand filtration is used successfully to provide potable water for individual households. Tablet …
Water Purification For Rural Communities Using Ultraviolet Light And Bleach Systems, Ryan Lee
Water Purification For Rural Communities Using Ultraviolet Light And Bleach Systems, Ryan Lee
Chemical Engineering Undergraduate Honors Theses
Many technologies are used for water disinfection. Chlorine, iodine, and ozone are some chemical methods of water disinfection. Filtration, including microfiltration, ultrafiltration, and reverse osmosis, is used to remove bacteria. In addition to chemical and filtration technologies, one can disinfect water using UV irradiation, ultrasonic treatment, electrolysis, solar disinfection, and slow sand filtration.
Currently, there are few solutions being employed in third world settings for communities. The current solutions are either for one household or are part of an existing infrastructure and therefore are not portable. Slow sand filtration is used successfully to provide potable water for individual households. Tablet …
L'Oreal Waste Minimization, Caitlin Burns, Joe Baugh, Allen Busick, Ryan Black, Emily Evans, Matthew Margis
L'Oreal Waste Minimization, Caitlin Burns, Joe Baugh, Allen Busick, Ryan Black, Emily Evans, Matthew Margis
Chemical Engineering Undergraduate Honors Theses
The purpose of this design project is to reduce the amount of waste being generated at L’Oreal’s North Little Rock manufacturing facility. To accomplish this, the design team visited the North Little Rock manufacturing facility to examine the areas producing the most waste. After gaining a detailed understanding of these areas, the UP1 production line was identified as one of the largest opportunities for waste reduction in the L’Oreal manufacturing facility. In the UP1 processing area, mascara is mixed in large mixing tanks and then pumped in to barrels to be packaged. The 2,000 liter and 1,000 liter Olsa tanks …
Algae To Butanol: Our Contribution To People, Prosperity, And Planet, Ethan Carter
Algae To Butanol: Our Contribution To People, Prosperity, And Planet, Ethan Carter
Chemical Engineering Undergraduate Honors Theses
Phase I investigated a method for producing butanol from algae using a novel automated hydrolysis, fermentation, and separation process. The Phase I research team sought to experimentally optimize individual steps and parameters of the process, design and build an automated unit to produce fuel-grade butanol from algae in a batch process, evaluate the sustainability and large scale economics of the process, and design an outreach program encouraging energy and environmental awareness centered around K-12 students. The team used macroalgae samples obtained through the generosity of the City of New York from Jamaica Bay to test the equipment and viability of …
Design And Construction Of A Novel Automated Unit For Conversion Of Algae To Butanol, Hiroko Nakao
Design And Construction Of A Novel Automated Unit For Conversion Of Algae To Butanol, Hiroko Nakao
Chemical Engineering Undergraduate Honors Theses
Phase I investigated a method for producing butanol from algae using a novel automated hydrolysis, fermentation, and separation process. The Phase I research team sought to experimentally optimize individual steps and parameters of the process, design and build an automated unit to produce fuel-grade butanol from algae in a batch process, evaluate the sustainability and large scale economics of the process, and design an outreach program encouraging energy and environmental awareness centered around K-12 students. The team used macroalgae samples obtained through the generosity of the City of New York from Jamaica Bay to test the equipment and viability of …
Synthesis And Analysis Of The Antimicrobial Peptoid N-Lfb6, Allen Busick
Synthesis And Analysis Of The Antimicrobial Peptoid N-Lfb6, Allen Busick
Chemical Engineering Undergraduate Honors Theses
The increasing presence of drug resistant bacteria has led to research of new methods to combat bacteria. A part of the natural peptide Lactoferricin, LfB6 (RRWQWR-NH2), has been shown to be effective against a variety of gram positive and gram negative bacteria. However, there are several problems associated with peptides. Peptides can quickly degrade in the body which causes larger doses to be effective. Large doses of some peptides are cytotoxic to the host. Peptoids are a class of compounds that can potentially mimic the function of peptides and circumvent the problems associated with them. The backbone of peptoids is …
Innovation And Development Of Biofuel Technologies, Nicole Lorenz
Innovation And Development Of Biofuel Technologies, Nicole Lorenz
Chemical Engineering Undergraduate Honors Theses
The need for viable alternatives to gasoline has lead researchers to explore various options for renewable energy resources. This research study focuses on two major options for renewable energy. The first is biodiesel, which is a fuel that can be made from vegetable oils or animal fats. In this study, biodiesel was made from tall oil, a paper byproduct. A novel reaction method was used, employing high temperature methanol rather than acid or base catalysis. The second option that was investigated is butanol, which is an alcohol with advantages over ethanol. First, a two-step fermentation was examined to improve the …
Non-Natural Protein Mimetics For The Treatment Of Alzheimer's Disease, Jennifer Herrera, Amanada Compean, Jasmine Brown, Melissa Moss, Shannon Servoss
Non-Natural Protein Mimetics For The Treatment Of Alzheimer's Disease, Jennifer Herrera, Amanada Compean, Jasmine Brown, Melissa Moss, Shannon Servoss
Chemical Engineering Undergraduate Honors Theses
Alzheimer's disease (AD) is a slow degenerative disease that causes memory loss and eventually leads to death. AD is caused by the aggregation of the amyloid-beta protein, found on the outside of brain cells; once the amyloid-beta protein begins to aggregate it forms plaques on the extracellular part of the neural cells. To date there is no AD medication commercially available that breaks up the amyloid-beta aggregates. Current research has found that certain molecules bind to the amyloid-beta protein and prevent aggregation. The purpose of this research project is to engineer a peptoid-based molecule to stop the aggregation of the …
A Review Of The Benefits And Applications Of The Thorium Fuel Cycle, Vincent Hall
A Review Of The Benefits And Applications Of The Thorium Fuel Cycle, Vincent Hall
Chemical Engineering Undergraduate Honors Theses
This paper aims to inform the reader of the benefits that can be achieved by using thorium as a fuel for nuclear power. Stages of the thorium cycle are directly compared against the current uranium based nuclear fuel cycle. These include mining, milling, fuel fabrication, use of various reactor designs, reprocessing, and disposal. Thorium power promises several key advantages over traditional nuclear power methods, namely a dramatic decrease in long lived radioactive waste, increased fuel efficiency, greater chemical stability during disposal, and higher adaptability for differing reactor designs across a wider range of the thermal neutron spectrum. Obstacles that face …
Production Of Biobutanol From Biomass Using Novel Membrane Reactor, Natalie Thibodeaux
Production Of Biobutanol From Biomass Using Novel Membrane Reactor, Natalie Thibodeaux
Chemical Engineering Undergraduate Honors Theses
Producing biobutanol from a waste product on a large scale is a novel idea. Because of this, there is very little research available in this area. Previous fermentation research has primarily focused on the production of ethanol or biobutanol using cellulosic or agricultural feed stocks. The Phase I research team, Team R azorbacks E ngineering FU el S olutions for E veryone (Team REFUSE), sought to design a fermentation process that would produce butanol from food waste. Team REFUSE cultivated a partnership with Chartwells, the campus food service provider for the University of Arkansas, for the acquisition of food waste. …