Browsing Chemical Engineering by Title
Now showing items 544-563 of 990
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Mass Transfer to/from Distributed Sinks/Sources in Porous Media
(University of Waterloo, 2006-12-18)This research addresses a number of fundamental issues concerning convective mass transfer across fluid-fluid interfaces in porous media. Mass transfer to/from distributed sinks/sources is considered for i) the slow ... -
Material and Surface Properties of Bio-inspired Polydopamine and its Modified Polypyrrole Functional Nanocomposites
(University of Waterloo, 2015-07-24)Inspired by marine mussel adhesives, the dopamine (DA) polymerization process has been introduced as a versatile deposition method to coat almost all kinds of material surfaces and form a nanoscale polydopamine (PDA) thin ... -
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 ... -
Material Design and Engineering for Polymer Electrolyte Membrane Zinc-Air Batteries
(University of Waterloo, 2018-03-23)Zinc-air batteries, whose advantages include relatively high energy density (1218 Wh kg-1), abundance of zinc in earth’s crust, and very safe operational characteristics, are promising for applications in consumer electronics, ... -
Mathematical Model and Calendar Aging Study of Commercial Blended-Cathode Li-ion Batteries
(University of Waterloo, 2016-08-26)Commercial blended-cathode Li-ion battery (LIB) systems has been dominating the burgeoning market for portable energy, ranging from consumer electronics to automotive applications. In order to successively improve the ... -
Mathematical Modeling of Atom Transfer Radical Polymerization
(University of Waterloo, 2007-01-23)Atom transfer radical polymerization is a new and important living polymerization mechanism because it can produce many different polymers with controlled microstructures and novel properties. The commercialization of these ... -
Mathematical Modeling of Chain Shuttling Polymerization
(University of Waterloo, 2016-12-21)Chain shuttling polymerization with dual catalysts has introduced a new class of polyolefin called olefin block copolymers (OBCs). The Dow Chemical Company developed this new material in 2006 with a chain shuttling agent ... -
Mathematical Modeling of Free-radical Six-component Bulk and Solution Polymerization
(University of Waterloo, 2008-10-17)The purpose of this project is to reexamine established free-radical polymerization theories and build a mechanistic reactor model for multi-component (up to six monomers) bulk and solution polymerizations under batch/semi-batch ... -
Mathematical Modeling of Rechargeable Hybrid Aqueous Batteries
(University of Waterloo, 2014-09-04)A rechargeable hybrid aqueous battery (ReHAB) system was recently developed by our research group. It has been improved via different experimental approaches, but nobody yet has tried to use mathematical modeling techniques ... -
Mathematical Programming Based Synthesis of Rice Drying Processes
(University of Waterloo, 2009-05-21)Various drying models have been developed in the extent which they are available for the analysis of drying processes in a variety of practical drying systems. However, most were focused only on a single unit operation; ... -
Matrix Metalloproteinase-2 Cleavable Peptide-Based siRNA Delivery System for Cancer Treatment
(University of Waterloo, 2019-09-23)Among all kinds of gene therapy, siRNA, a class of 20 to 25 nucleotide-long double-stranded RNA molecules, is one of the promising therapeutic solutions to regulate post-transcriptional process for cancer treatment. However, ... -
Measuring effective diffusivity in porous media with a gasket-free, radial arrangement
(Elsevier, 2019-02-01)A simple technique for measuring the effective diffusivity, and ultimately tortuosity, in porous media is presented. The method uses a custom-built apparatus, based on a radial geometry, which eliminates the need for any ... -
Mechanical and Chemical Properties of High Density Polyethylene: Effects of Microstructure on Creep Characteristics
(University of Waterloo, 2008-12-01)Environmental stress cracking (ESC) can result in catastrophic failure of polyethylene (PE) structures without any visible warning. The use of PE in more demanding applications, such as trenchless piping, can accelerate ... -
Mechanical Behaviour, Water Absorption and Morphology of Wheat Straw, Talc, Mica and Wollastonite filled Polypropylene Composites
(University of Waterloo, 2012-05-23)Polypropylene continues to be the mainstream choice thermoplastic for automotive applications. In many applications PP is filled with mineral fillers for improvement of properties. Biobased natural fillers or fibres are ... -
Membrane Fouling During Hollow Fiber Ultrafiltration of Protein Solutions: Computational Fluid Modeling and Physicochemical Properties
(University of Waterloo, 2011-02-01)Hollow fiber ultrafiltration is a viable low cost alternative technology for the concentration or separation of protein solutions. However, membrane fouling and solute build up in the vicinity of the membrane surface ... -
Membrane Fouling in Constant Permeate Flux Cross-Flow Microfiltration of Biological Solutions
(University of Waterloo, 2008-04-03)This thesis investigates the fouling of a microfiltration membrane by biological solutions. Membrane fouling is recognized as a major drawback for the application of microfiltration in the purification of biotechnology ... -
Metabolic Analysis of a CHO Cell Line in Batch and Fed-batch Culture
(University of Waterloo, 2011-09-30)Animal cell culture is widely used as a platform for the production of a variety of biopharmaceuticals. The development of an efficient and productive cell culture requires a deep understanding of intra-cellular mechanisms ... -
Metal organic framework (MOF) porous octahedral nanocrystals of Cu-BTC: Synthesis, properties and enhanced adsorption properties
(Elsevier, 2019-01-01)Herein, we report the synthesis, characterization and enhanced adsorption studies of porous octahedral shaped Cu-BTC (copper benzene-1,3,5-tricarboxylate) metal organic frameworks (MOFs). The Cu-BTC MOFs were synthesized ... -
Metal-organic frameworks derived platinum-cobalt bimetallic nanoparticles in nitrogen-doped hollow porous carbon capsules as a highly active and durable catalyst for oxygen reduction reaction
(Elsevier, 2018-06-05)Pt-based nanomaterials are regarded as the most efficient electrocatalysts for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs). However, widespread adoption of PEMFCs requires solutions ... -
A method for measuring relative in-plane diffusivity of thin and partially saturated porous media: An application to fuel cell gas diffusion layers
(Elsevier, 2017-07-01)A new experimental technique, extended from similar work on dry materials, is presented for measuring the in-plane components of the relative diffusivity tensor for partially saturated porous media. The method utilizes a ...