Extraction Of Butanol By Continuous Pervaporation Of A Two-Stage Fermentation,
2011
University of Arkansas, Fayetteville
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,
2011
University of Arkansas, Fayetteville
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,
2011
University of Arkansas, Fayetteville
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,
2011
University of Arkansas, Fayetteville
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,
2011
University of Arkansas, Fayetteville
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,
2011
University of Arkansas, Fayetteville
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,
2011
University of Arkansas, Fayetteville
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,
2011
University of Arkansas, Fayetteville
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,
2011
University of Arkansas, Fayetteville
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,
2011
University of Arkansas, Fayetteville
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 …
Cellulose Nanocrystals Properties And Applications In Renewable Nanocomposites,
2011
Clemson University
Cellulose Nanocrystals Properties And Applications In Renewable Nanocomposites, Esteban Urena Benavides
All Dissertations
Development of novel bio-based nanocomposites is fundamental to reduce the dependence on fossil resources and provide a sustainable future. In light of this global problem, cellulose nanocrystals (CNCs) have raised interest due to their remarkable mechanical properties. Adequate design of nanocomposites requires a fundamental understanding of how the structure affects the mechanical properties of the material. However, contradictory results in the literature have revealed a lack of comprehension of this relationship for CNC based composites. Consequently, this work provides an explanation to unusual results for CNC nanocomposites presented in the literature and demonstrates the ability to achieve property enhancements in …
Self-Assembling Organic Semiconductors With Tunable Electronic Properties Based On Novel Asymmetric Phenazine And Bisphenazine,
2011
University of Nevada, Las Vegas
Self-Assembling Organic Semiconductors With Tunable Electronic Properties Based On Novel Asymmetric Phenazine And Bisphenazine, Kyoungmi Jang
UNLV Theses, Dissertations, Professional Papers, and Capstones
Current demands in the area of organic semiconductors focus on both electronic and self-assembling properties. Particularly, one-dimensionally grown nanostructures of small organic semiconductors have drawn much attention for nanodevice fabrication. Self-assembly through various intermolecular interactions has been widely used to produce one-dimensionally grown nanostructures which can be induced by various methods such as rapid solution dispersion, a phase transfer method, vapor annealing, crystallization, and organogelation in conjunction with proper molecular design. Controlling the morphology of the nanostructures plays an important role in achieving desirable properties in optoelectronic device applications. While significant advancements have been made in developing molecular architectures for …
Cfd Modeling Of Entrance And Exit Geometries Of A Wind Speed Accelerator.,
2011
University of Louisville
Cfd Modeling Of Entrance And Exit Geometries Of A Wind Speed Accelerator., David Russ
Electronic Theses and Dissertations
Current wind power technology is not economically feasible throughout most of the United States due to low average wind speeds. A design for a small-scale wind concentrator device suitable for use in areas of low wind velocity was tested using computational fluid dynamics (CFD). Using a novel approach, the device seeks to accelerate incoming air above minimum velocities required for economical power generation. The novel approach employs a funnel shaped inlet with relief vents along the circumference, so as to alleviate backpressure. Both inlet and outlet sections utilize funnel shapes with both parabolic and hyperbolic regions. All geometry and mesh …
Predicting Homo And Lumo Energy Gaps For Organic Semi-Conductor: A Theoretical Study,
2011
University of Nevada, Las Vegas
Predicting Homo And Lumo Energy Gaps For Organic Semi-Conductor: A Theoretical Study, Padtaya Pukpayat
Festival of Communities: UG Symposium (Posters)
This poster presents a theoretical approach for characterizing the electronic properties of novel electron-deficient organic semiconductors containing variety of electron donor substituents. In treating these compounds, the following questions will be addressed: What effects to the bandgap will each substituent have? Will any of the substituents lower the band gap to the desired range for solar cell applications(<2.0eV)? Can we use the current, inexpensive and tractable computational methods as a predictive tool for guiding future experimental design of organic based solar cells, rather than depending solely on experimental procedures?
Fluxes Across Double-Diffusive Interfaces: A One-Dimensional-Turbulence Study,
2011
Sandia National Laboratories
Fluxes Across Double-Diffusive Interfaces: A One-Dimensional-Turbulence Study, Esteban Gonzalez-Juez, Alan R. Kerstein, David O. Lignell
Faculty Publications
This work is a parametric study of the fluxes of heat and salt across unsheared and sheared double-diffusive interfaces using one-dimensional-turbulence (ODT) simulations. It is motivated by the need to understand how these fluxes scale with parameters related to the fluid molecular properties and background shear. Comparisons are made throughout with previous models and available measurements. In unsheared interfaces, ODT simulations show that the dimensionless heat flux Nu scales with the stability parameter Rρ, Rayleigh number Ra and Prandtl number Pr as Nu ~ (Ra/Rρ)0.37±0.03 when Pr varies from 3 to 100 and as Nu ~ (Ra/Rρ)0.31Pr0.22±0.04 when Pr varies …
Capture And Sequestration Of Carbon Dioxide In Flue Gases,
2011
Michigan Technological University
Capture And Sequestration Of Carbon Dioxide In Flue Gases, Surendra Komar Kawatra, Timothy C. Eisele, John J. Simmons
Michigan Tech Patents
There is provided a process for the capture and sequestration of carbon dioxide that would otherwise enter the atmosphere and contribute to global warming and other problems. C02 capture is accomplished by reacting carbon dioxide in flue gas with an alkali metal carbonate, or a metal oxide, particularly containing an alkaline earth metal or iron, to form a carbonate salt. A preferred carbonate for C02 capture is a dilute aqueous solution of additive-free (Na2C03). Other carbonates include (K2C03) or other metal ion that can produce both a carbonate and a bicarbonate salt. Examples of suitable metal oxides include several alkaline …
Running Head: Analysis Of The Just In Time Inventory System At Uhs Wilson Medical Center,
2011
Binghamton University--SUNY
Running Head: Analysis Of The Just In Time Inventory System At Uhs Wilson Medical Center, Kyle P. Roeber
MPA Capstone Projects 2006 - 2015
In November 2007, United Health Services Materials Management implemented a Just in Time Inventory system to have a tighter control of their supply chain. This project examines the accuracy of the par levels currently employed by the United Health Services and the financial impact of operating a Just in Time inventory system using inaccurate inventory and par levels. In addition, the project researches other hospitals using JIT inventory management systems to compare implementation and management practices of JIT process.
Review Of Gasoline, Diesel, And Ethanol Biofuels From Grasses And Plants. By Ram B. Gupta And Ayhan Demirbas.,
2011
University of Nebraska - Lincoln
Review Of Gasoline, Diesel, And Ethanol Biofuels From Grasses And Plants. By Ram B. Gupta And Ayhan Demirbas., Adam Liska
Great Plains Research: A Journal of Natural and Social Sciences (through 2013)
A new book on the production of biofuels by Gupta and Demirbas provides technical insight into the conversion processes that could provide a range of domestic fuels from plant materials to substitute for foreign oil. It focuses primarily on conversion processes for production of cellulosic ethanol, Fischer-Tropsch diesel, pyrolysis bio-oil, and hydrothermal biocrude from biomass resources, as well as "first-generation" grain ethanol and biodiesel from vegetable oil. In addition to a detailed summary of these chemical processes, the book provides a briefer treatment of related matters such as biofuel policy, economics, and environmental issues. The book does discuss the limitations …
The Solvent Effectiveness On Extraction Process Of Seaweed Pigment,
2011
Departement of Food Science and Technology, Faculty of Agricultural-Animal, Muhammadiyah University of Malang, Malang 65144, Indonesia
The Solvent Effectiveness On Extraction Process Of Seaweed Pigment, Warkoyo Warkoyo, Elfi Anis Saati
Makara Journal of Technology
Eucheuma cottonii seaweed is a species of seaweed cultured in Indonesian waters, because its cultivation is relatively easy and inexpensive. It has a wide variety of colors from green to yellow green, gray, red and brown, indicating photosynthetic pigments, such as chlorophyll and carotenoids. An important factor in the effectiveness of pigment extraction is the choice of solvent. The correct type of solvent in the extraction method of specific natural materials is important so that a pigment with optimum quality that is also benefical to the society can be produced. The target of this research is to obtain a high …
The Synergy Of Recombinant Xylanolytic Enzyme On Xylan Hydrolysis,
2011
Proteomic Laboratory, Institute of Tropical Disease, Airlangga University, Surabaya 60115, Indonesia
The Synergy Of Recombinant Xylanolytic Enzyme On Xylan Hydrolysis, One Asmarani, Bambang Prajogo Eko Wardojo, Ni Nyoman Tri Puspaningsih
Makara Journal of Technology
Microbial xylanases or xylanolytic enzyme have received considerable attention over the last years owing to a multitude of possible applications. These enzymes have potential in the biodegradation of lignocellulosic biomass to fuels, chemicals, fruit juice, animal feed and in improving rumen digestion. More recently, the use of xylanases as bleaching agent in the pulp and paper industry has been suggested to replace of some of the chemicals presently used for this purpose. Such applications could have an important positive impact on the environment. The purpose of this research was determining the synergy of 3 recombinant xylanolytic enzymes (β-xylosidase, exo-xylanase and …
