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Articles 151 - 180 of 222
Full-Text Articles in Chemical Engineering
Electrocoagulation For Sulfate Removal, Hailey Marie Dunsworth
Electrocoagulation For Sulfate Removal, Hailey Marie Dunsworth
Chemical Engineering Undergraduate Honors Theses
In the United States, one of the major rising issues is water shortage, especially in Western, inland states with arid climates. Not only do deficiencies exist for potable water, but for irrigation and agricultural purposes as well. Currently, the Brackish Groundwater National Desalination Research Facility in Alamogordo, New Mexico has four separate wells that are being used for experimentation. A major concern is that a considerable amount of this water can be used as another reliable source for potable water if treated. The WERC-A-HOLICS have identified two possible methods to alleviate this problem. Electrocoagulation (EC) is a technology useful for …
Radiative Cooling To The Night Sky, Alexander R. Enderlin
Radiative Cooling To The Night Sky, Alexander R. Enderlin
Chemical Engineering Undergraduate Honors Theses
Silicon wafer fabrication facilities require a significant amount of temperate cooling water to meet high internal cooling loads. The tertiary chilled water systems operate year round to fulfil the constant cooling load needed for production. Conventional chillers require a large amount of electricity to cool the water by the vapor compression cycle. As energy costs increase and environmental stewardship becomes the norm in industry, sustainable technologies are needed to chill process cooling water without the significant energy consumption of today’s chillers. Night sky radiation cools a medium by radiating heat from a warm medium to the colder night sky. The …
Impregnation And Adsorption Of Rare Earth Elements On Amberlite Xad-7, Bobby G. Hampton
Impregnation And Adsorption Of Rare Earth Elements On Amberlite Xad-7, Bobby G. Hampton
Chemical Engineering Undergraduate Honors Theses
Beads were washed then impregnated with an organophosphorous extractant D2EHPA. The washing process, as well as factors in the impregnation process were studied. Water was deemed sufficient to prewash the beads before use over small and large amounts of acid with acetone. The impregnation of beads at an Amberlite D2EHPA ratio of 1:1 was determined to be best. Absorption isotherms of Neodymium were the first to be studied. By testing different concentrations, Amberlite was determined to absorb the max amount at 4000 ppm. The pH values from 2-7 were determined to have no effect on the amount of Neodymium absorbed …
Separatome Of Escherichia Coli Analysis Of Deae Chromatography As Ph Of Loading Changes, Rita E. Tejada Vaprio
Separatome Of Escherichia Coli Analysis Of Deae Chromatography As Ph Of Loading Changes, Rita E. Tejada Vaprio
Chemical Engineering Undergraduate Honors Theses
Recombinant DNA technology is used to produce therapeutics in host organisms and undergoes several purification steps before it can be used by the end user. Escherichia coli which has been widely studied has been the microorganism of choice mainly because of its low production costs. The primary objective of this study was to investigate the optimal conditions to purify a protein of interest with antifungal properties. Varying the loading pH alters the overall charge of both the target protein and host cell proteins (HCPs). Identifying genomic proteins that remain bound regardless of loading pH on DEAE columns will guide future …
Electrocoagulation For Sulfate Removal, Gina Marie Densmore
Electrocoagulation For Sulfate Removal, Gina Marie Densmore
Chemical Engineering Undergraduate Honors Theses
In the United States, one of the major rising issues is water shortage, especially in Western, inland states with arid climates. Not only do deficiencies exist for potable water, but for irrigation and agricultural purposes as well. Currently, the Brackish Groundwater National Desalination Research Facility in Alamogordo, New Mexico has four separate wells that are being used for experimentation. A major concern is that a considerable amount of this water is currently wasted by being sent to evaporation ponds without any sort of treatment for human consumption. The WERC-A-HOLICS have identified two possible methods to alleviate this problem. Electrocoagulation (EC) …
Use Of Peptoid Microspheres To Improve Enzyme Linked Immunosorbent Assay (Elisa) Microarray For Early Cancer Detection, Valerie Del Carmen Reyez Loayza
Use Of Peptoid Microspheres To Improve Enzyme Linked Immunosorbent Assay (Elisa) Microarray For Early Cancer Detection, Valerie Del Carmen Reyez Loayza
Chemical Engineering Undergraduate Honors Theses
The pursuit of an efficient and economical technique for early detection of cancer has led to the development of sophisticated biosensors for antigen analysis. As biosensors become more complex, coatings are necessary and important. The preferred coatings need to have the following properties: high surface area for binding, resistance to biofouling, and flexible synthesis. The focus of this project is to determine whether using peptoid microsphere-coated glass slides in the enzyme linked immunosorbent assay (ELISA) microarray technique is better than using commercially available glass slides. Current microarray slides are coated with reactive groups, such as amines, epoxides, or aldehydes. It …
Ultrasonic Hoguanauts Werc Task 2: Separation Of Oil From Water, Jesus Eduardo Martinez
Ultrasonic Hoguanauts Werc Task 2: Separation Of Oil From Water, Jesus Eduardo Martinez
Chemical Engineering Undergraduate Honors Theses
Engineering, Chemical Engineering, Environmental
Recycling Wastewater For Hydraulic Fracturing By Use Of Nanofiltration Membranes, Haley D. Cleous
Recycling Wastewater For Hydraulic Fracturing By Use Of Nanofiltration Membranes, Haley D. Cleous
Chemical Engineering Undergraduate Honors Theses
Hydraulic fracturing creates large volumes of produced water, contaminated with organics, suspended solids, and dissolved minerals. This water must either be disposed of in injection wells or treated for reuse. One option is to use a combination of ultrafiltration and nanofiltration to treat this water and reuse it in future hydraulic fracturing wells. The object of this study was to test and characterize commercial nanofiltration membranes. The work done for this project will lead to future work in modifying membranes to improve the rejection of desired components.
Solar Brine Concentrator, Aric Gregory Fisher
Solar Brine Concentrator, Aric Gregory Fisher
Chemical Engineering Undergraduate Honors Theses
In arid regions of the United States potable water is a valuable resource and is sometimes produced using energy intensive processes by removing salts from brackish water. Task 4 provides a solar option for producing potable water from brackish water; in competing in Task 4, H2OGS has developed a simple, cost effective solar desalination process to provide these regions with necessary, potable water. H2OGS’ design takes into account WERC requirements, including cost, energy usage, worker safety, and easily obtained materials. U.S. government regulatory requirements are also taken into account as the proposed location for this process is Alamogordo, New Mexico. …
Werc: Solar Brine Concentrator, Sarah K. Haley
Werc: Solar Brine Concentrator, Sarah K. Haley
Chemical Engineering Undergraduate Honors Theses
In arid regions of the United States potable water is a valuable resource and is sometimes produced using energy intensive processes by removing salts from brackish water. Task 4 provides a solar option for producing potable water from brackish water; in competing in Task 4, H2OGS has developed a simple, cost effective solar desalination process to provide these regions with necessary, potable water. H2OGS’ design takes into account WERC requirements, including cost, energy usage, worker safety, and easily obtained materials. U.S. government regulatory requirements are also taken into account as the proposed location for this process is Alamogordo, New Mexico. …
Coal Fires: An Environmental Disaster, Edward K. Jenner
Coal Fires: An Environmental Disaster, Edward K. Jenner
Chemical Engineering Undergraduate Honors Theses
Coal Fires are an environmental disaster.
Coal Fires: An Environmental Disaster, Carolyn Schardt
Coal Fires: An Environmental Disaster, Carolyn Schardt
Chemical Engineering Undergraduate Honors Theses
Coal Fires are part of an environmental disaster.
Expression, Purification, And Large-Scale Production Of The Human Recombinant Annexin-V Protein, Gayatri Suresh Kumar
Expression, Purification, And Large-Scale Production Of The Human Recombinant Annexin-V Protein, Gayatri Suresh Kumar
Chemical Engineering Undergraduate Honors Theses
Annexin-V is a cytosolic protein involved in many significant physiological roles including stabilization of the phospholipid membrane, regulation of blood coagulation, and cell apoptosis or programmed cell death. Though the exact mechanism of Annexin-V in the human body is not fully understood, its wide range of applications in the medical field cannot be denied. Annexin-V can be applied in cancer therapy as a diagnostic to detect cell apoptosis and determine the effectiveness of chemotherapeutic drugs. Furthermore, Annexin-V could even be used as a drug delivery vehicle in the treatment of cancer. Commercially useful proteins like Annexin-V are in high demand, …
Water System For Developing Countries / Disaster Relief Made With Local Materials, Florencio Serrano Castillo
Water System For Developing Countries / Disaster Relief Made With Local Materials, Florencio Serrano Castillo
Chemical Engineering Undergraduate Honors Theses
The objective of this project was to design a water purification system that can be constructed from easily available materials, common to the particular country, and is capable of the complete water purification process. The designed system consisted of a treadle pump (built from wood or bamboo) to pull the water from its source, a filter (made of readily available materials such as sand) to remove contaminants and improve palatability of water, an electrolysis system to allow chlorination from salt water (using locally sourced salt), and a car battery (which could be sourced from a scrapped car) that could be …
Water System For Developing Countries / Disaster Relief Made With Local Materials, Keiron Anton Hamilton Durant
Water System For Developing Countries / Disaster Relief Made With Local Materials, Keiron Anton Hamilton Durant
Chemical Engineering Undergraduate Honors Theses
My main duty for the project was to design various tests to assess the quality of the water and to assure that the water we were producing complies with the World Health Organization’s standards. I was responsible for researching these requirements and communicating with experts in the field so that our team could make logical decisions as to how the design should be altered. The first professor I had interactions with was Dr. Julian Fairy who is a civil engineering expert in waste water treatment. He advised us on our entire system design and effective ways for testing the chlorine …
Fluorescence Imaging Of Microdialysis Sampling, Jordan Leigh Haynie
Fluorescence Imaging Of Microdialysis Sampling, Jordan Leigh Haynie
Chemical Engineering Undergraduate Honors Theses
Many biomolecules including proteolytic enzymes known as matrix metalloproteinases (MMPs) are released when a material, such as a microdialysis probe, is implanted in a living organism. The MMPs cleave structural protein components of the extracellular matrix and play an important role in biological functions such as wound healing.1-3 Many enzymatic substrates for MMPs have fluorescent product mimics, and the mimics can be used as agents to monitor biochemical processes.1 In this study, microdialysis, a minimally invasive sampling technique, was combined with fluorescence imaging to determine the possibility of monitoring microdialysis in real-time, and thus provide a method that could ultimately …
A Peptoid-Based Targeted Drug Delivery System For The Treatment Of Metastatic Cancer, Hugh M. Purdy
A Peptoid-Based Targeted Drug Delivery System For The Treatment Of Metastatic Cancer, Hugh M. Purdy
Chemical Engineering Undergraduate Honors Theses
Development of a targeted drug delivery system is a critical step in the effort to improve cancer treatments. Such a system would greatly reduce the harmful side effects of chemotherapy by delivering toxic drugs directly to cancerous cells. Peptoids—synthetic compounds that can be easily produced from readily available amine monomers—have great potential for use in targeted drug delivery. This project aimed to develop peptoids that would bind to specific proteins expressed on the surface of cancer cells. These peptoids could be combined into a complex that would bind to the proteins with an even greater affinity than the individual compounds. …
Coal Fires: An Environmental Disaster, Lidsay Hoggatt
Coal Fires: An Environmental Disaster, Lidsay Hoggatt
Chemical Engineering Undergraduate Honors Theses
The mission of the Coal Fire Gang (CFG) is to spread awareness about the global issue of uncontrolled coal fires, and to highlight them as a low-hanging fruit of immediate emissions reduction. This report summarizes CFG’s research for the WERC competition, for which this topic was chosen as an open task. Beyond raising awareness, CFG modeled, developed and built an experimentation apparatus meant to prove the validity of a relatively cheap extinguishing method which was also novel to the regions in which it could be employed. The apparatus, which simulated an underground coal fire, was used to test a sand …
Fabrication Of Nanoscale Features On Surfaces, James C. Proctor
Fabrication Of Nanoscale Features On Surfaces, James C. Proctor
Chemical Engineering Undergraduate Honors Theses
A method to form nanofeatures on the surface of a material by utilizing a prefabricated polymer nanostructures is proposed. A means by which the polymer structures can be produced is discussed. The advantages and disadvantages of this process and other nanolithography processes are evaluated.
Coal Fires: An Environmental Disaster, Daniel Robert Miskin
Coal Fires: An Environmental Disaster, Daniel Robert Miskin
Chemical Engineering Undergraduate Honors Theses
The mission of the Coal Fire Gang (CFG) is to spread awareness about the global issue of uncontrolled coal fires, and to highlight them as a low-hanging fruit of immediate emissions reduction. This report summarizes CFG’s research for the WERC competition, for which this topic was chosen as an open task. Beyond raising awareness, CFG modeled, developed and built an experimentation apparatus meant to prove the validity of a relatively cheap extinguishing method which was also novel to the regions in which it could be employed. The apparatus, which simulated an underground coal fire, was used to test a sand …
Water System For Developing Countries/Disaster Relief Made With Local Materials, Cayla Tichy
Water System For Developing Countries/Disaster Relief Made With Local Materials, Cayla Tichy
Chemical Engineering Undergraduate Honors Theses
The United Nations estimates that water-borne illness accounts for 80% of deaths in developing nations and that nearly 1 in 6 do not have access to clean water (1). However, despite the ability to produce water in the developed world from complex streams such as wastewater or seawater, challenges remain in providing this basic resource in the developing world. Too often the approach has been to apply a high-tech solution, which requires significant technical expertise to run and significant financial resources to repair. Furthermore, as every developing nation faces different challenges, a new solution must be provided for each situation. …
Coal Fires - An Environmental Disaster, Nicholas Kordsmeier
Coal Fires - An Environmental Disaster, Nicholas Kordsmeier
Chemical Engineering Undergraduate Honors Theses
The mission of the Coal Fire Gang (CFG) is to spread awareness about the global issue of uncontrolled coal fires, and to highlight them as a low-hanging fruit of immediate emissions reduction. This report summarizes CFG’s research for the WERC competition, for which this topic was chosen as an open task. Beyond raising awareness, CFG modeled, developed and built an experimentation apparatus meant to prove the validity of a relatively cheap extinguishing method which was also novel to the regions in which it could be employed. The apparatus, which simulated an underground coal fire, was used to test a sand …
Water System For Developing Countries / Disaster Relief Made With Local Materials, Dong Joon Lee
Water System For Developing Countries / Disaster Relief Made With Local Materials, Dong Joon Lee
Chemical Engineering Undergraduate Honors Theses
As the equipment builder of the team, I was responsible for building the treadle pump, the sand filter tank, the hand pump, and generating the instructions for each equipment. Each team member was responsible for certain parts of the water purification system, but everyone worked cohesively on all parts of the design when assistance was necessary. The original design for the treadle pump was a two-man powered pump which discharged water at 15 gallons per minute. Since our system only required less than half of the flow rate, and required another person to operate the bicycle, the pump was redesigned …
Coal Fires: An Environmental Disaster, Turner Tomlinson
Coal Fires: An Environmental Disaster, Turner Tomlinson
Chemical Engineering Undergraduate Honors Theses
The mission of the Coal Fire Gang (CFG) is to spread awareness about the global issue of uncontrolled coal fires, and to highlight them as a low-hanging fruit of immediate emissions reduction. This report summarizes CFG’s research for the WERC competition, for which this topic was chosen as an open task. Beyond raising awareness, CFG modeled, developed and built an experimentation apparatus meant to prove the validity of a relatively cheap extinguishing method which was also novel to the regions in which it could be employed. The apparatus, which simulated an underground coal fire, was used to test a sand …
Water System For Developing Countries / Disaster Relief Made With Local Materials, Lauren E. Cole
Water System For Developing Countries / Disaster Relief Made With Local Materials, Lauren E. Cole
Chemical Engineering Undergraduate Honors Theses
At the beginning of this project, I elected to focus mainly on the electrolysis portion. I completed a lot of research on electrolysis in general, and then specifically on brine electrolysis, which is transforming a salt water solution into a sodium hypochlorite solution, or bleach. I researched all of the different types of electrode materials and purchased several electrodes in order to perform experiments. I researched several methods of electrolysis in use today. I performed several calculations about the electrolysis reaction, including the electric potential required to drive the reaction (approximately 1.0 volt), as well as what concentration of salt …
Manufacturing The Next Generation Of Vaccines: Non-Egg Based Platform For Influenza Vaccine, Andrew B. Price
Manufacturing The Next Generation Of Vaccines: Non-Egg Based Platform For Influenza Vaccine, Andrew B. Price
Chemical Engineering Undergraduate Honors Theses
This report explores the design of an influenza vaccine manufacturing facility using a non-egg based expression platform. The current standard procedure in flu vaccine production is to grow the virus in bird eggs. However, recently there is evidence that supports production by other expression platforms. The Sf9 insect cell is considered in this report. Facility design including cell culture media formulation through product storage for shipment and final formulation is considered based on the use of an existing facility. The new design also employs the use of disposable equipment such as bioreactors and purification unit operations. These disposables help reduce …
Characterization Of An Affitoid Variable Region To Be Used For Mdm-2 Detection In Elisa Microarray, Graham Reinhard
Characterization Of An Affitoid Variable Region To Be Used For Mdm-2 Detection In Elisa Microarray, Graham Reinhard
Chemical Engineering Undergraduate Honors Theses
Sandwich enzyme-linked immunosorbent assay (ELISA) microarray using peptoid-based affinity reagents, referred to as affitoids, is potentially a very powerful tool for the early detection of cancer and other complex diseases. Current detection methods for cancer are inadequate because most are imaging techniques and require that the cancer has progressed far enough for growths to be visible, which is often far too late for treatment to be effective. One possible way to overcome this issue is to use a biological detection technique that is able to detect proteins that are secreted specifically by cancerous cells (referred to as biomarkers). These biomarkers …
International Environmental Design Contest Task: Hyrdaulic Fracturing Fluid Hydrocarbon Removal As A Reverse Osmosis Pretreatment, Elisabeth Yates
International Environmental Design Contest Task: Hyrdaulic Fracturing Fluid Hydrocarbon Removal As A Reverse Osmosis Pretreatment, Elisabeth Yates
Chemical Engineering Undergraduate Honors Theses
Natural gas is useful in several different applications from chemical feed stock, to energy and fuel source. In the past it has been too expensive to be properly taken advantage of, but in recent years technology advancements have made it a rather cheap commodity. However, these advancements, hydraulic fracturing and horizontal drilling, come at an additional cost. They require massive amounts of water, approximately 7,000,000 gallons per well drilled. After use, this water is laden with salts and dangerous hydrocarbons. In order for the water to be recycled or reused, both components must be removed. Reverse osmosis membranes are commonly …
Protein Isolation Using Peptoid Based Affinity Chromatography, Megan Dunn
Protein Isolation Using Peptoid Based Affinity Chromatography, Megan Dunn
Chemical Engineering Undergraduate Honors Theses
Protein purification is essential for advancements in biotechnology. There are several different methods employed in purifying a particular protein from a complex sample such as a cell lysate. These methods take advantage of differences in the size, charge or binding affinity of the protein. One such method is affinity chromatography which utilizes the binding affinity of a protein toward a certain ligand to purify a protein. This is usually used as a final step to extract the desired protein after the mixture has undergone other purification steps to remove unwanted materials. The goal of this project was to develop a …
Novel Method For Sequential Batch Recovery Of Biomass From A Helical Photobioreactor, Matthew Hurst
Novel Method For Sequential Batch Recovery Of Biomass From A Helical Photobioreactor, Matthew Hurst
Chemical Engineering Undergraduate Honors Theses
This study developed and evaluated a novel method to recover the microalgae species Arthrospira platensis from a closed helical photo bioreactor system. A recovery apparatus was designed and shown to increase recovery by 40% via periodic online recovery runs during exponential growth phase of biomass. Considerations for the apparatus design included the low shear tolerance of the algae and the necessity for a closed system in order to monitor CO2 consumption. The recovery method draws on methods used for large scale recovery as reported in literature by Vonshak and Shimmatsu [1], [2]. This work seeks to improve reactor biomass yield …