Browsing Chemical Engineering by Title
Now showing items 730-749 of 990
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Platinum Group Metal-Free Catalyst and Catalyst Layer Design for PEM Fuel Cells
(University of Waterloo, 2019-12-12)Facing the crises of energy shortage and climate change, it becomes increasingly urgent to find renewable and low carbon emission replacements for fossil fuels. Renewable energy such as wind power, hydropower, solar energy, ... -
Poly(ether block amide)-based Composite Membranes for Carbon Capture
(University of Waterloo, 2020-01-17)A great amount of anthropogenic CO2 emissions has caused the greenhouse effect which impacts the living environment of creatures on the planet. Effective carbon capture technologies need to be developed to reduce CO2 emissions. ... -
Poly(vinylidene fluoride) membranes: Preparation, modification, characterization and applications
(University of Waterloo, 2009-09-24)Hydrophobic microporous membranes have been widely used in water and wastewater treatment by microfiltration, ultrafiltration and membrane distillation. Poly(vinylidene fluoride) (PVDF) materials are one of the most popular ... -
Poly-L-arginine Coated Silver Nanoprisms and Their Anti-Bacterial Properties
(Multidisciplinary Digital Publishing Institute, 2017-09-27)The aim of this study was to test the effect of two different morphologies of silver nanoparticles, spheres, and prisms, on their antibacterial properties when coated with poly-L-arginine (poly-Arg) to enhance the interactions ... -
Polydopamine-Based Thin Film Composite Membranes for Pervaporative Concentration of Potassium Acetate Solution
(University of Waterloo, 2022-12-19)Potassium acetate (KAc) is a valuable chemical product due to its widespread application in multiple fields. During the production of KAc, the concentration of dilute KAc solution is a vital pre-treatment procedure to ... -
Polyethylene Glycol as an Electrolyte Additive for Rechargeable Hybrid Aqueous Batteries
(University of Waterloo, 2018-09-05)Climatic and environmental challenges arising from excessive greenhouse gas production from human activities have necessitated a serious shift towards sustainable and renewable sources of power such as solar, wind and ... -
Polymer Electrolyte Membranes for Liquid Olefin-Paraffin Separation
(University of Waterloo, 2013-08-28)Olefin/Paraffin separation, traditionally carried out by cryogenic distillation, is difficult to achieve due to the similar size and volatility of the components. Recently, many studies have explored membrane separation ... -
Polymer Electrolytes for Rechargeable Lithium/Sulfur Batteries
(University of Waterloo, 2015-02-17)The lithium/sulfur (Li/S) battery is one of the most promising candidates for energy storage systems due to sulfur’s high theoretical specific capacity at 1672 mAh g-1. This capacity is an order of magnitude higher than ... -
Polymer Electrolytes for Rechargeable Lithium/Sulfur Batteries
(University of Waterloo, 2013-08-29)With the rapid development of portable electronics, hybrid-electric and electric cars, there is great interest in utilization of sulfur as cathodes for rechargeable lithium batteries. Lithium/sulfur batteries implement ... -
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 ... -
Polymeric Coatings for Targeted Nanoparticle Delivery to Subsurface Contaminants
(University of Waterloo, 2019-05-01)Terrestrial oil spills account for the majority of oil spills world wide and present a challenging remediation problem owing to the inaccessibility of subsurface petroleum hydrocarbons (PHC). Contaminants such as crude oil ... -
Polymeric Materials for Detection of Chemical Warfare Agents
(University of Waterloo, 2021-12-08)Chemical Warfare Agents (CWAs) are toxic synthetic chemicals that can have incapacitating or lethal effects. The 1997 Chemical Weapons Convention (1997 CWC) restricted production, stockpiling and use of CWAs, including ... -
Polymerization Data Mining: A Perspective
(Wiley, 2019-04-01)Nowadays, ‘Data mining’ is widely proposed by data scientists as the most accepted and powerful approach to properly handle the information explosion. Data mining is defined as the extraction of interesting patterns and ... -
Polymerization of Ethylene with Supported Early and Late Transition Metal Catalysts
(University of Waterloo, 2011-08-09)Single-site catalysts revolutionized the polyolefin manufacturing industry and research with their ability to make polymers with uniform microstructural properties. Several of these catalysts are currently used commercially ... -
Polypropylene Modified by Polydimethylsiloxane in Catalytic Cross Metathesis Reactions
(University of Waterloo, 2010-07-09)In this study, we were particularly interested in looking at the possibility that cross metathesis of olefins in melt phase could be used to produce polydimethylsiloxane (PDMS) modified polypropylene (PP). The intention ... -
Polypyrrole-Graphene based Flexible Supercapacitors
(University of Waterloo, 2020-05-13)The high interest in wearable technologies has inspired an increased demand for portable, flexible energy storage devices. Currently, most commercial electrochemical energy storage units, such as supercapacitors, are ... -
Pore network modeling of fibrous gas diffusion layers for polymer electrolyte membrane fuel cells
(Elsevier, 2007-11-08)A pore network model of the gas diffusion layer (GDL) in a polymer electrolyte membrane fuel cell is developed and validated. The model idealizes the GDL as a regular cubic network of pore bodies and pore throats following ... -
Pore Network Modeling of Hydrodynamic Dispersion and Irreversible Adsorption of Nanoparticles in Partially Saturated Granular Media
(University of Waterloo, 2022-07-20)The transport of nanoparticles in porous media, whether deliberate or accidental, is of critical importance in several fields including migration of contaminants, wastewater clean-up, and enhanced oil recovery. Pore scale ... -
Pore network modeling of phase change in PEM fuel cell fibrous cathode
(Springer, 2017-12-01)A pore network model has been applied to the cathode side of a fuel cell membrane electrode assembly to investigate the mechanisms leading to liquid water formation in the cell. This model includes mass diffusion, liquid ... -
Pore network modeling of reaction-diffusion in hierarchical porous particles: the effects of microstructure
(Elsevier, 2017-07-24)A general framework based on pore network modeling is presented for simulation of reactive transport in a porous catalyst with a hierarchy of porosity. The proposed framework is demonstrated in the context of steady state ...