Open Access. Powered by Scholars. Published by Universities.®

Chemical Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

10080 Full-Text Articles 12823 Authors 2244909 Downloads 97 Institutions

All Articles in Chemical Engineering

Faceted Search

10080 full-text articles. Page 1 of 274.

Activated Carbon-Based Carbon Dioxide Adsorption Process, Eric Chen, Katie Rolin, Zachary Stillman 2017 University of Pennsylvania

Activated Carbon-Based Carbon Dioxide Adsorption Process, Eric Chen, Katie Rolin, Zachary Stillman

Senior Design Reports (CBE)

This process uses activated carbon to adsorb 65 tonnes of CO2 from a coal-fired power plant per day using activated carbon sorbents at 93% purity using a two-stage adsorption process that uses vacuum-swing adsorption. The flue gas first is pressurized and dehydrated using cooling and chilled water. The stream is then sent into a packed activated carbon column at 1.11 bar until CO2 saturation, upon which the column is depressurized to 0.5 bar and the CO2 is desorbed. The gas is then sent into a second adsorption stage at 1 bar until CO2 saturation ...


Brewer's Spent Grain To Xylitol & Polylactic Acid, Alexander George, Kelsey Simet, Anthony Carradorini, Nabila Faour 2017 University of Pennsylvania

Brewer's Spent Grain To Xylitol & Polylactic Acid, Alexander George, Kelsey Simet, Anthony Carradorini, Nabila Faour

Senior Design Reports (CBE)

With this project, the authors seek to present a desirable and novel process for converting brewers’ spent grain into two value-added products: the alternative sweetener, xylitol, and a biodegradable plastic, polylactic acid. This particular process is based in the Philadelphia Naval Yard, and uses the spent grain from surrounding breweries and microbreweries as its input. However, while the collection logistics and input quantity may change, the process is one that may be implemented anywhere, with varying degrees of success.

The process consists of collection, universal pretreatment, then a split to feed one of two continuous fermenters. A highly acidophilic strain ...


On The Production Of High-Purity Docosahexaenoic Acid From Heterotrophic Microalgae, Andrew Zhu, Lea Nowack, Min Young Jeong 2017 University of Pennsylvania

On The Production Of High-Purity Docosahexaenoic Acid From Heterotrophic Microalgae, Andrew Zhu, Lea Nowack, Min Young Jeong

Senior Design Reports (CBE)

Omega-3 fatty acids provide significant health benefits and are a popular nutritional supplement in the nutraceuticals industry. Omega-3 fatty acids such as docosahexaenoic Acid (DHA) and eicosapentaenoic Acid (EPA) have been reported to improve heart health and mental health. In addition, DHA consumption has been tied to improvements in infant cognitive development. Therefore, high-purity DHA is a desired ingredient in the production of infant formula. The omega-3 oils originating from fish tend to have carcinogenic risks in addition to a bad odor. In recent years, the industry trend has shifted to producing these omega-3 fatty acids via microalgae species– making ...


Optimization Of Oleosin 30g Production For Echocardiography, Annette Krysiewicz, Andrew Parsons, Sergio Rodriguez-Labra 2017 University of Pennsylvania - Biostatistics

Optimization Of Oleosin 30g Production For Echocardiography, Annette Krysiewicz, Andrew Parsons, Sergio Rodriguez-Labra

Senior Design Reports (CBE)

Provided they are uniform in size, monodisperse microbubbles behave as contrast agents to enhance echocardiographic imaging. Compounds like Oleosin 30G with surfactant-like properties help stabilize microbubbles - thereby ensuring their uniform size. Designed herein is an industrial-scale plant to produce medical-grade Oleosin 30G with a process consisting of three steps: 1) upstream production via recombinant E. coli in an integrated batch bioprocessing model, 2) downstream purification, and 3) processing by microfluidic manifolds. Ultimately Oleosin 30G-coated microbubbles are manufactured, ready for injection within one month. Owing to its unique properties and cost-effective production, Oleosin 30G has the potential to outcompete current market ...


Direct Route To Phenol From Benzene, Bryan Daowdat, Gerard D. Hoeltzel, Robert Tannenbaum 2017 University of Pennsylvania

Direct Route To Phenol From Benzene, Bryan Daowdat, Gerard D. Hoeltzel, Robert Tannenbaum

Senior Design Reports (CBE)

Phenol production, expected to exceed 13MM metric tons in 2017, is a significant global industry with many flaws in its current manufacturing method. The Hock process essentially converts high value propylene to low value acetone. The proposed process design, detailed in this report, provides an alternative reaction pathway that utilizes a direct synthesis from benzene, as developed at the Council of Scientific and Industrial Research (CSIR) in New Delhi, India. The endorsed proposal is in accordance with US Patent 8,772,552 B2, that describes the production of phenol via vapor phase oxidation of benzene over a copper chromium oxide ...


An Efficient And Safe Cooking Stove For Las Delicias, El Salvador, Maria Castaner, Daniel Li, Nicolas Minor 2017 University of Pennsylvania

An Efficient And Safe Cooking Stove For Las Delicias, El Salvador, Maria Castaner, Daniel Li, Nicolas Minor

Senior Design Reports (CBE)

The primary objective of this project was to design an efficient and safe cooking stove based on the resources available in El Salvador while ensuring it could be inexpensive to produce. The stove is a cuboid, 18"×18"×12" in dimension, and weighs 75 lbs. It has a top cover to cook on, and a unique three-chamber design: a chamber for combustion, a chamber to pump hot air into the combustion chamber with a bellows, and a third chamber to add insulation material. A ventilation tube connects the inner chamber with the exterior to safely vent flue gas to the ...


Polyether Plant Design, Christina Hum, Carol Wang, Mauricio Tassano 2017 University of Pennsylvania

Polyether Plant Design, Christina Hum, Carol Wang, Mauricio Tassano

Senior Design Reports (CBE)

In recent years, the global market for polyethers has seen rapid expansion due to the growth of the construction, automobile, and foam industries. Polyethers are principally sold to polyurethane plants to produce a wide range of flexible and rigid foams that are used in a wide range of applications from automotive upholstery to inks. Consequently, the process for manufacturing polyethers is extremely vital to the consumer goods market and for maintaining the quality of life to which many people have grown accustomed. In this report, a plant has been designed in the Asia-Pacific region to produce 100 million pounds of ...


Coffee To Biofuels, Chelsea Giller, Bhavish Malkani, Josh Parasar 2017 University of Pennsylvania

Coffee To Biofuels, Chelsea Giller, Bhavish Malkani, Josh Parasar

Senior Design Reports (CBE)

This project proposes a production plant that will utilize 9.58 million kg/year of spent coffee grounds in order to produce 1.03 million liters/year of coffee biofuel and 2.56 million kg/year of biomass pellets. This plant will be located in northern New Jersey, where the maximum amount of spent coffee grounds can be obtained every day from each of the five boroughs in New York City. Practically, trucks could obtain grounds from 875 Starbucks and Dunkin Donuts coffee shops, collected 3-4 times per week. Overall uptime is taken to be 90%. The biodiesel is formed ...


Food Waste To Bio-Products, Elizabeth Handen, Mauricio Diaz Padilla, Hannah Rears, Lyle Rodgers 2017 University of Pennsylvania

Food Waste To Bio-Products, Elizabeth Handen, Mauricio Diaz Padilla, Hannah Rears, Lyle Rodgers

Senior Design Reports (CBE)

The goal of this project was to design and evaluate a project for the collection and processing of food waste and spent oil in Philadelphia. The project was designed to handle 5% of the total commercial waste generated in Philadelphia. This amounted to approximately 9,700 tons/year of food waste and 73,000 gallons/year of spent oil. The process was designed to utilize a BIOFerm™ Dry Fermentation Digestion System. Following the digestion, the biogas produced is passed through a Caterpillar CG132-12 Generator Set, producing electricity to be sold back to the local grid. The digestate from the anaerobic ...


Low-Cost, Commercial Scale Production Of Sofosbuvir, Joseph Solomon, Jake Hsu, Cynthia Tong, Ryan Bliss 2017 University of Pennsylvania

Low-Cost, Commercial Scale Production Of Sofosbuvir, Joseph Solomon, Jake Hsu, Cynthia Tong, Ryan Bliss

Senior Design Reports (CBE)

Recent advances in antiviral therapeutics have produced highly effective small molecule drugs to treat Hepatitis C, a deadly infection of the liver. Sofosbuvir, a hepatitis C drug developed by Gilead Sciences, is a breakthrough treatment due to its low side effects and high cure rate. However, the cost of treatment is extraordinarily high, priced at $84,000 per treatment in the US. In response to backlash regarding the cost barriers in developing countries, Gilead has reached licensing agreements with generic pharmaceutical companies to produce the drug for markets in low-income countries such as India, Kenya, and Cuba among others. The ...


Computer Simulation Fof Flexiblity And Inertial Effects On Self-Propelled Swimming Bodies, Ye Luo, Tai-Hsien Wu 2017 Western Michigan University

Computer Simulation Fof Flexiblity And Inertial Effects On Self-Propelled Swimming Bodies, Ye Luo, Tai-Hsien Wu

Research and Creative Activities Poster Day

In this research, a numerical simulation method is employed to simulate a flapping movement for a flexible slender swimmer in a fluid. Our objective is to study dynamic behaviors of the flapping movement. Fig. 1 shows a sketch of the simulation: the leading edge of the swimming body is swung in the vertical direction to generate a horizontal thrust force, which drives the body itself to cruise in the horizontal direction in a fluid. The simulation is based on a combination of three numerical methods: the Lattice Boltzmann Method (LBM), Lattice Spring Model (LSM), and Immersed Boundary Method (IBM). The ...


The Effects Of Adaptogens On The Physical And Psychological Symptoms Of Chronic Stress, Tosin Ajala 2017 Georgia State University

The Effects Of Adaptogens On The Physical And Psychological Symptoms Of Chronic Stress, Tosin Ajala

Georgia State Undergraduate Research Conference

No abstract provided.


Genetic Code Expansion In Biochemical Investigations And Biomedical Applications, Nanxi Wang 2017 University of Nebraska-Lincoln

Genetic Code Expansion In Biochemical Investigations And Biomedical Applications, Nanxi Wang

Student Research Projects, Dissertations, and Theses - Chemistry Department

Genetic code expansion provides a powerful tool for site-specific incorporation of unnatural amino acids (unAAs) with novel biochemical and physiological properties into proteins in live cells and organisms. To achieve this, a nonsense codon suppression system, which consists of an orthogonal aminoacyl-tRNA synthetase (aaRS) and tRNA pair that specifically decodes a nonsense codon (e.g., amber codon and quadruplet codon) with an unAA but do not “cross talk” with their endogenous counterparts, was established. This Ph.D. thesis presents our efforts on evolution and application of nonsense codon suppression systems for biochemical and biomedical investigations.

In Chapter 1, a brief ...


An Expedited, Regiospecific Para-Bromination Of Activated Aryls, Kathryn E. Dudley 2017 Western Kentucky University

An Expedited, Regiospecific Para-Bromination Of Activated Aryls, Kathryn E. Dudley

Masters Theses & Specialist Projects

Electrophilic Aromatic Substitution (EAS) is one of the most frequently used aryl substitution methods. Aside from the fact that most EAS reactions require an acid and an oxidizer to proceed, the reactions involving activated aryls typically produce a mixture of ortho- and para- products as well as an ortho-/para- disubstituted product. Regiospecificity in aromatic substitution is key in the production of many compounds in a variety of disciplines. Since EAS is one of the most often used substitution methods, it is extremely important to develop an efficient method for regiospecific substitutions. Previous research developed a method of ortho-substitution by ...


Synthesis, Characterization, And Properties Of Graphene-Based Hybrids With Cobalt Oxides For Electrochemical Energy Storage And Electrocatalytic Glucose Sensing, Sara C. Botero Carrizosa 2017 Western Kentucky University

Synthesis, Characterization, And Properties Of Graphene-Based Hybrids With Cobalt Oxides For Electrochemical Energy Storage And Electrocatalytic Glucose Sensing, Sara C. Botero Carrizosa

Masters Theses & Specialist Projects

A library of graphene-based hybrid materials was synthesized as novel hybrid electrochemical electrodes for electrochemical energy conversion and storage devices and electrocatalytical sensing namely enzymeless glucose sensing. The materials used were supercapacitive graphene-family nanomaterials (multilayer graphene-MLG; graphene oxide-GO, chemically reduced GO-rGO and electrochemical reduced GOErGO) and pseudocapacitive nanostructured transition metal oxides including cobalt oxide polymorphs (CoO and Co3O4) and cobalt nanoparticles (CoNP). These were combined through physisorption, electrodeposition, and hydrothermal syntheses approaches. This project was carried out to enhance electrochemical performance and to develop electrocatalytic platforms by tailoring structural properties and desired interfaces. Particularly, electrodeposition and hydrothermal synthesis facilitate chemically-bridged ...


Sorption Of Benzene, Dichloroethane, Chloroform And Dichloromethane By Polyethylene Glycol, Polycaprolactone And Their Copolymers At 298.15 K Using A Quartz Crystal Microbalance, Abhijeet Radhakrishna Iyer 2017 University of South Florida

Sorption Of Benzene, Dichloroethane, Chloroform And Dichloromethane By Polyethylene Glycol, Polycaprolactone And Their Copolymers At 298.15 K Using A Quartz Crystal Microbalance, Abhijeet Radhakrishna Iyer

Graduate Theses and Dissertations

Quartz crystal microbalances (QCM) are acoustic wave sensor systems which are used majorly for vapor and liquid sensing. QCM come under the category of thickness shear mode (TSM) sensors. There are several methods to study organic vapor sensing; the QCM method is the one that offers the highest sensitivity and generates the most data. Solubilities of benzene, dichloroethane, chloroform and dichloromethane in polyethylene glycol (PEG), polycaprolactone (PCL), and several di-block PEG/PCL copolymers at 298.15 K are reported. There are literature data available for most of the solvents in the homopolymers PEG and PCL but no literature data is ...


Light Olefin Production By Cracking Nannochloris Oculata Microalgae Using Aluminosilicate Catalysts, Gaurav Goyal 2017 University of South Florida

Light Olefin Production By Cracking Nannochloris Oculata Microalgae Using Aluminosilicate Catalysts, Gaurav Goyal

Graduate Theses and Dissertations

The global demand and sustainability concerns for producing light olefins encouraged researchers to look for an alternative and sustainable feedstock. Alkenes, such as ethene, propene and butene, are known as light olefins. Olefins are the backbone of the chemical industry because they serve as the chemical building blocks for the manufacture of polymers, fibers, and numerous organic chemicals. Feedstocks such as naphtha, natural gas and liquefied petroleum gas (LPG) are currently used for producing light olefins, but they are non-renewable and hence unsustainable. In contrast, biomass as a potential feedstock for the production of fuels and chemicals is renewable. Microalgae ...


Removal Of Chlorine From Chlorine-Nitrogen Mixture In A Film Of Liquid Water, Sarwan S. Sandhu 2017 University of Dayton

Removal Of Chlorine From Chlorine-Nitrogen Mixture In A Film Of Liquid Water, Sarwan S. Sandhu

Sarwan S. Sandhu

In industry there are many examples of absorption of a gas with or without chemical reaction in the liquid phase. In physical absorption, a particular gaseous component is removed from a gas mixture due to its larger solubility in the liquid phase solvent. The removal of butane and pentane from a refinery gas mixture by a heavy oil in the liquid phase is an example of physical absorption. In absorption with chemical reaction, the gaseous component to be removed transfers across the gas-liquid interface due to a difference in the bulk chemical potentials or concentrations in the two phases. The ...


Characterization Of Iron Phthalocyanine As The Cathode Active Material For Lithium-Ion Batteries, Sarwan S. Sandhu, Joseph P. Fellner 2017 University of Dayton

Characterization Of Iron Phthalocyanine As The Cathode Active Material For Lithium-Ion Batteries, Sarwan S. Sandhu, Joseph P. Fellner

Sarwan S. Sandhu

The developed thermodynamic functions for the determination of Gibbs free energy, enthalpy, and entropy of formation of solid lithium-iron phthalocyanine (LixFePc) from solid lithium and iron phthalocyanine as a function of x, defined as g-moles of the intercalated lithium per g-mole of iron phthalocyanine, at a fixed set of temperature and pressure conditions are presented. In addition, a proposed expression for the evaluation of lithium diffusion coefficient in solid iron phthalocyanine as a function of both x and temperature, and the experimental results from the ongoing research/development work on the lithium/iron phthalocyanine cells are included.


Optimizing Compressed Air Storage For Energy Efficiency, Brian Abels, J. Kelly Kissock 2017 University of Dayton

Optimizing Compressed Air Storage For Energy Efficiency, Brian Abels, J. Kelly Kissock

J. Kelly Kissock

Compressed air storage is an important, but often misunderstood, component of compressed air systems. This paper discusses methods to properly size compressed air storage in load-unload systems to avoid short cycling and reduce system energy use. First, key equations relating storage, pressure, and compressed air flow are derived using fundamental thermodynamic relations. Next, these relations are used to calculate the relation between volume of storage and cycle time in load-unload compressors. It is shown that cycle time is minimized when compressed air demand is 50% of compressor capacity. The effect of pressure drop between compressor system and storage on cycle ...


Digital Commons powered by bepress