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Chemical Engineering: Recent submissions
Now showing items 461-480 of 994
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Application of hydrocarbon and perfluorocarbon oxygen vectors to enhance heterologous production of hyaluronic acid in engineered Bacillus subtilis
(University of Waterloo, 2017-12-19)In microbial cultivations for hyaluronic acid (HA) production, oxygen can be a limiting substrate due to its poor solubility in aqueous medium and the substantial increase in culture viscosity at relatively low HA titers. ... -
Renewable Syngas Generation and Biogas/Landfill Gas Upgrade via Thermocatalytic Conversion of Carbon Dioxide
(University of Waterloo, 2017-12-18)The reverse water gas shift (RWGS) and thermocatalytic Sabatier reaction can be potentially used to convert captured CO2 or biogas/landfill gas into renewable synthetic fuels via syngas generation or production of renewable ... -
A dynamic optimization framework for integration of design, control and scheduling of multi-product chemical processes under disturbance and uncertainty
(Elsevier, 2017-11-02)A novel dynamic optimization framework is presented for integration of design, control, and scheduling for multi-product processes in the presence of disturbances and parameter uncertainty. This framework proposes an ... -
The effect of hydrogen peroxide produced during ultraviolet disinfection of CHO cell culture media
(Elsevier, 2017-10-01)Ultraviolet (UV) irradiation is being considered for protection against viral contamination in cell culture media. Hydrogen peroxide (H2O2) produced by UV irradiation has been suggested as the cause for poor cell growth ... -
Optimal processing route for the utilization and conversion of municipal solid waste into energy and valuable products
(Elsevier, 2018-02-10)A systematic design of municipal solid waste (MSW) management system can lead to identify a promising and/or sustainable way of handling MSW by processing it into energy and valuable products. In this study, a systematic ... -
Optimization Algorithms for Integration of Design, Control, and Scheduling for Chemical Processes Subject to Disturbances and Uncertainty
(University of Waterloo, 2017-10-24)Optimization of multiproduct processes is vital for process performance, especially during dynamic transitions between operating points. However, determining the optimal operating conditions can be a challenging problem, ... -
Partial Characterization of Yeast Hydrolysates for Insights on Chemically Defined Media for Sf-9 Insect Cells
(University of Waterloo, 2017-10-18)Yeast extract, or other varieties of yeast hydrolysate, have been used in combination with a lipid supplement to completely eliminate the need for fetal bovine serum during in vitro cultivations of insect cells. This has ... -
Evaluation of Electrospun Fibrous Mats Targeted for Use as Flow Battery Electrodes
(The Electrochemical Society, 2017-07-14)Electrospinning was used to create custom-made fibrous electrode materials for redox flow batteries with targeted structural properties. The aim was to increase the available surface area for electrochemical reaction without ... -
Sorptive Removal of 4-Aminophenol from Water Using a Polymeric Sorbent
(University of Waterloo, 2017-09-27)This study deals with isotherm, kinetics and mechanistic studies pertaining to the sorption of 4-aminophenol from water using poly(ether-block-amide) (PEBA). A combined Langmuir and Freundlich isotherm model is used to ... -
Enhanced Durability of Pt Alloy Nanoparticles Using Sulfur-Doped Graphene via Metal-Support Interactions for PEMFC Cathode Catalysis of ORR
(University of Waterloo, 2017-09-27)The hydrogen fuel cell is a form of renewable energy generation technology that produces energy electrochemically and can address energy concerns in the near future, especially due to the diminishing supplies of non-renewable ... -
Novel N-Type π-Conjugated Polymers for All-Polymer Solar Cell
(University of Waterloo, 2017-09-27)Organic solar cells (OSCs), also known as, organic photovoltaics (OPVs), appear as a promising technology for renewable energy owing to their light weight, great flexibility and low-cost fabrication process. So far most ... -
The Role of Germicidal Ultraviolet Light in the Formation of Secondary Organic Aerosols
(University of Waterloo, 2017-09-26)Ultraviolet (UV) light with a wavelength of 254 nm has proven to be effective at inactivating microorganisms, and thus has been increasingly employed as a method of disinfection of indoor environments. UV light with ... -
Design and simulation of a petcoke gasification polygeneration plant integrated with a bitumen extraction and upgrading facility and net energy analysis
(Elsevier, 2017-09-18)The in-situ extraction of bitumen from oil sands, particularly steam assisted gravity drainage, has been the fastest growing production technology in the industry. Integrated with upgrading operations to enhance the fuel ... -
Pyrolysis, kinetics analysis, thermodynamics parameters and reaction mechanism of Typha latifolia to evaluate its bioenergy potential
(Elsevier, 2017-09-01)This work was focused on understanding the pyrolysis of Typha latifolia. Kinetics, thermodynamics parameters and pyrolysis reaction mechanism were studied using thermogravimetric data. Based on activation energies and ... -
Multi-products productions from Malaysian oil palm empty fruit bunch (EFB): Analyzing economic potentials from the optimal biomass supply chain
(Elsevier, 2017-12-01)The economic potentials of Malaysian oil palm empty fruit bunch are realized by several motivating factors such as abundance, cheapness and are generally feasible to produce multi-products that range from energy, chemicals ... -
New composite sustainability indices for Cradle-to-Cradle process design: Case study on thinner recovery from waste paint in auto industries
(Elsevier, 2017-11-10)In a conventional chemical process design, the main focus is on the process economy resulting in the generation of huge amounts of waste materials within the process. Such design approach demands end-of-pipe treatment, ... -
Advanced non-precious metal catalyst for oxygen reduction reaction in polymer electrolyte membrane fuel cells
(University of Waterloo, 2017-09-20)To address the global energy and environmental challenges, the polymer electrolyte membrane fuel cell (PEMFC) is proposed and developed as one of the most promising power source candidates for various applications including ... -
Development of Co-Assembly Methods for Improved Graphene/Ionic Liquid Supercapacitors
(University of Waterloo, 2017-08-31)Supercapacitors, also known as electric double-layer capacitors or ultracapacitors, store energy by rapid and reversible rearrangement of ions/charges at the electrolyte/electrode interface. This physical process results ... -
Correlation between mechanical dissipation and improved X-band electromagnetic shielding capabilities of amine functionalized graphene/thermoplastic polyurethane composites
(Elsevier, 2017-08-24)Graphene-based polymer nanocomposites have demonstrated significant promise to create commercially viable electromagnetic interference (EMI) shielding to protect the next-generation of electronic materials from radiative ... -
Uncertainty Analysis and Robust Optimization of a Single Pore in a Heterogeneous Catalytic Flow Reactor System
(University of Waterloo, 2017-08-31)Catalytic systems are crucial to a wide number of chemical production processes, and as a result there is significant demand to develop novel catalyst materials and to optimize existing catalytic reactor systems. These ...