Browsing Chemical Engineering by Type "Doctoral Thesis"
Now showing items 1-20 of 350
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Adsorption Kinetics of Alkane-thiol Capped Gold Nanoparticles at Liquid-Liquid Interfaces.
(University of Waterloo, 2012-03-08)The pendant drop technique was used to characterize the adsorption behavior of n-dodecane-1-thiol and n-hexane-1-thiol capped gold nanoparticles at the hexane-water interface. The adsorption process was studied by analyzing ... -
Adsorptive Removal of Refractory Sulphur and Nitrogen Compounds from Transportation Fuels
(University of Waterloo, 2011-09-02)The reduction of sulphur in transportation fuel has gained significant importance as the regulatory agencies worldwide react to air quality concerns and the impact of sulphur oxides on the environment. The overall objective ... -
Advanced Carbon Nanomaterials as Non-Precious Metal Catalysts for Fuel Cells
(University of Waterloo, 2017-08-24)Polymer electrolyte membrane fuel cells (PEMFCs) are electrochemical devices that efficiently convert hydrogen and oxygen into electricity and water. Their clean point of operation emissions and continuous operation have ... -
Advanced Heteroatom Doped Nanocarbon Materials as Platinum Catalyst Supports for Fuel Cells
(University of Waterloo, 2016-03-17)The pressing demand for high performance, operationally stable and inexpensive electrocatalyst materials for proton exchange membrane fuel cells (PEMFCs) has spurred significant research and development interest in this ... -
Advanced membrane for water desalination and ion separation applications
(University of Waterloo, 2023-04-25)Population growth, contamination of fresh water, and climate change are increasing pressure on water supplies, accelerating the need for technological solutions that will improve access to clean water for drinking and ... -
Advanced Nanostructure Materials for Hybrid Supercapacitors
(University of Waterloo, 2017-07-05)Hybrid supercapacitors (HSCs) are electrochemical devices that combine the characteristics of batteries and supercapacitors in one asymmetric cell. Lithium ion batteries (LIBs) and supercapacitors (SCs) represent two ends ... -
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 ... -
Advanced Silicon Anode Architectures for High Energy Density Lithium-ion Batteries
(University of Waterloo, 2018-09-07)The pressing environmental issues and the continuous increase in energy demand have drawn tremendous attention to the development of advanced electrochemical energy storage systems (EESS). Lithium-ion batteries are currently ... -
Advanced Silicon-based Electrodes for Rechargeable Lithium-ion Batteries
(University of Waterloo, 2018-04-24)The pressing environmental and ecological issues with fossil fuels, together with their long-term unsustainability have driven a mighty quest for alternative energy sources. High-performance and reliable energy conversion ... -
Amide-based Donor-acceptor Polymers for Sensor Applications
(University of Waterloo, 2021-06-02)Organic semiconductors, especially polymerized organic semiconductors, are suitable for manufacturing low-cost electronic products on flexible lightweight substrates through a high throughput roll-to-roll printing process. ... -
Application of Cellulose Nanocrystals (CNCs) in Emulsified Asphalt
(University of Waterloo, 2022-03-18)In today's world, transportation infrastructure plays a vital role in global competitiveness and the quality of life in societies. A considerable fraction of taxpayers' money is spent on expanding and maintaining road ... -
Application of Cellulose Nanomaterials in Thermoplastic Composites
(University of Waterloo, 2016-08-31)Nanocrystalline cellulose (CNC) is a renewable and biodegradable nanomaterial obtained by acid hydrolysis of cellulose. It exhibits notable mechanical properties: a high aspect ratio and a high surface area. These properties ... -
Application of Cellulose Nanomaterials in Water Treatment Processes
(University of Waterloo, 2020-01-20)Many advanced water treatment processes have been designed and implemented to purify water, such as adsorption, photocatalysis, and membrane filtration processes. All these processes have the potential to be enhanced through ... -
Application of Deep Learning in Chemical Processes: Explainability, Monitoring and Observability
(University of Waterloo, 2022-01-04)The last decade has seen remarkable advances in speech, image, and language recognition tools that have been made available to the public through computer and mobile devices’ applications. Most of these significant ... -
Application of Environmental Technology Management (ETM) to Automobile Exhaust Emission Reduction
(University of Waterloo, 2010-11-23)Vehicle emissions, arising from incomplete fuel combustion and reactions between N2 and O2 leading to NOX, have detrimental effects on human health and environment quality. Engine exhaust contains a variety of regulated ... -
Application of Flow Cytometry and Fluorescence Spectroscopy to Monitor and Predict the Fermentation Activity in a Vaccine Manufacturing Process
(University of Waterloo, 2019-01-07)Bordetella pertussis is a Gram-negative coccobacillus, pathogenic and aerobic bacterium responsible for causing whooping cough, which is an upper respiratory tract infection in humans. To prevent this disease whole cellular ... -
Application of Multi-wavelength Fluorometry to Monitoring Protein Ultrafiltration
(University of Waterloo, 2009-05-21)Membrane filtration of protein solutions is influenced by a wide range of processing and physicochemical conditions. Monitoring and optimizing membrane filtration may have advantages for achieving, in a cost effective ... -
Application of Niobium Compounds Towards the One-Step Synthesis of Methyl Isobutyl Ketone (MIBK) via Catalytic Distillation
(University of Waterloo, 2008-12-12)Dispersed niobia catalysts were prepared via a non-aqueous synthesis route. The effects of the type of oxide support, the support thermal pre-treatment, the calcination temperature and the niobia loading on the activity ... -
Applications of Polyvinylamine in Removal of Heavy Metals from Wastewater by Polymer-Enhanced Ultrafiltration and Adsorption
(University of Waterloo, 2016-01-14)In this study, water-soluble polyvinylamine (PVAm) was used as chelating agent for heavy metal removal from wastewater by polymer-enhanced ultrafiltration (PEUF). The effects of parameters involved in the ultrafiltration ... -
Approaches to Tailoring the Structure and Properties of Polyethylene
(University of Waterloo, 2002)Alternative methods to control the molecular weight and short chain branching distribution of polyethylene were investigated. The ability to produce polyolefins with multimodal microstructural distributions using single ...