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Chemical Engineering: Recent submissions
Now showing items 201-220 of 994
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‘Optimulation’ in Chemical Reaction Engineering: The Oxidative Coupling of Methane as a Case Study
(ACS, 2018-06-07)The optimization of reacting systems, including chemical, biological, and macromolecular reactions, is of great importance from both theoretical and practical standpoints. Even though several classical deterministic and ... -
Polymer Gels as Functional Soft Solids
(University of Waterloo, 2020-10-21)Polymer gels are polymer networks suspended in a liquid where chemical or physical crosslinks of the network maintain the physical form of the gels. They are a hybrid material that is between a liquid and a solid, making ... -
Multi-Physics Modeling of Lithium-Ion Battery Electrodes
(University of Waterloo, 2020-10-19)Lithium-ion batteries (LIBs) dominated the market due to their relatively high energy/power density, and long cycle life. However, a multitude of factors need to be addressed which have hindered further development of LIBs ... -
Dually Crosslinked Composite Membrane as Cation Conducting Solid Electrolyte for Electrochemical Energy Conversion and Storage System
(University of Waterloo, 2020-09-30)Ion exchange membrane (IEM) is a key component of redox flow batteries (RFB) that heavily influences the electrochemical performances, energy efficiency and long term stability of the system. Ionic conductivity, ionic ... -
Multiphysics Modelling of Liquid Crystal Based Adaptive Lenses
(University of Waterloo, 2020-09-30)Conventional lenses are limited by their fixed shaped and optical properties. Liquid crystal adaptive lenses (LCLAs) are a promising candidate to move beyond these limitations thanks their tuneable optical properties. A ... -
A Topology-Based Method for the Compartmentalization of Multiphysics Flows
(University of Waterloo, 2020-09-28)Continuum simulations of multiphysics processes are costly due to the coupling of transport phenomena. Compartment modelling decouples hydrodynamics from other transport phenomena, offering a low-cost simulation alternative ... -
Design and Construction of Graphene-Based Advanced Materials for Emerging Concept Supercapacitors
(University of Waterloo, 2020-09-25)Supercapacitors (SCs) as a new class of energy storage devices have attracted great attention in industry and academia community due to their higher energy density than dielectric capacitors, higher power density than ... -
Rational Design and Green Fabrication of Antimicrobial Metal Nanoparticle/Cellulose Nanocrystal Composites
(University of Waterloo, 2020-09-21)The primary goals of the work presented in this thesis were to better understand how metal nanoparticles (MNPs) affect antimicrobial activity, and to develop green synthesis protocols for the fabrication of nanocomposites ... -
Engineering Non-Precious Group Metal Electrode for PEMFCs with Enhanced Mass Transport via Electrospraying Technique
(University of Waterloo, 2020-09-21)Ever since the concept of “Hydrogen Economy” emerged, fuel cell technology has been regarded as the key component of the clean, sustainable energy future. Thanks to great successes in the development of fuel cell technology ... -
Intelligent Monte Carlo: A new paradigm for inverse polymerization engineering
(Wiley, 2018-05)Traditional computational methods simulate the microstructure of polymer chains from input reaction conditions, but a need exists for predicting optimum reaction conditions in a computationally-demanding multi-variable ... -
Integrated metabolic engineering and bioprocessing strategies for production of succinyl-CoA-derived chemicals in Escherichia coli
(University of Waterloo, 2020-09-15)Due to various social, environmental, and technological issues associated with petro-based chemical processes, bio-based production using microbial cell factories has been recognized as a modern biotechnology for more ... -
Nanostructured Materials and Electrodes Engineering for Efficient CO2 Conversion
(University of Waterloo, 2020-09-11)The conversion of CO2 to valuable chemicals via electrochemical CO2 reduction reactions (CO2RR) offers a clean approach for recycling CO2 with sustainable and environmental benefits. Among a variety of derived chemicals, ... -
Effect of UV Radiation on the Mechanical and Rheological properties of LLDPE and HDPE films
(University of Waterloo, 2020-09-10)The effect of varying the intensity, time and illumination pattern of ultraviolet radiation on the mechanical properties of linear low density polyethylene (LLDPE) and high density polyethylnene (HDPE) has been studied. ... -
Antimicrobial Cellulose Nanocrystals Containing Quaternary Ammonium Polymers Prepared via Atom Transfer Radical Polymerization
(University of Waterloo, 2020-09-09)Nanomaterials have been widely used as antimicrobial agents for their high efficiency. However, the lack of recovery techniques and toxicity has raised concerns for the use of these materials. Cellulose nanocrystals (CNCs), ... -
Organic and Inorganic Nanostructured Materials as Electrodes for Hybrid Capacitors
(University of Waterloo, 2020-09-03)Global energy demands are expected to continuously grow in the coming decades, while the dominant source of energy remains finite fossil fuels. In addition to this challenge, excessive consumption of fossil fuels has ... -
Material Design and Electrochemical Behavior Study on Metal-Based Electrocatalysts for Rechargeable Zn-Air Batteries
(University of Waterloo, 2020-09-02)Zn-based electrochemistries can provide bivalent redox, reserve abundancy in earth, moderate reactivity, and compatibility with aqueous electrolyte. When comparing to Li-based battery technologies, their superiorities in ... -
Comparison of the methylerythritol phosphate pathway and the isopentenol utilization pathway for astaxanthin production in Escherichia coli
(University of Waterloo, 2020-09-01)Astaxanthin is a red carotenoid belonging to the isoprenoid family of compounds. Currently, the most common method of producing astaxanthin is through chemical synthesis and natural production using Haematococcus pluvialis. ... -
Cellulose Nanocrystal Hybrids as Reinforcing and Antibacterial Agents in Rubber Nanocomposites
(University of Waterloo, 2020-08-31)As environmental consciousness increases and fossil fuel feedstocks are depleted, ecofriendly product development is of utmost importance. This thesis describes an in-depth analysis of cellulose nanocrystals (CNC) used as ... -
Performance Optimization of a Cation-Disordered Rock-Salt Positive Electrode Material for Next-Generation Lithium-ion Batteries
(University of Waterloo, 2020-08-28)The growing threat of climate change has sparked a shift in societal norms surrounding the reliance on fossil fuels for our energy and transportation sectors. Driven by this shift, the global demand for sustainable energy ... -
Photocatalytic Oxidation of Anesthetic Gases
(University of Waterloo, 2020-08-27)Inhaled anesthetics used in surgeries are typically volatile halogenated hydrocarbons. In a typical situation only 5% of the administered anesthetic is metabolized by the human body, while the remaining 95% is exhaled ...