Browsing Chemical Engineering by Issue Date
Now showing items 1-20 of 982
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Evaluation of Polymeric Membranes for Gas Separation Processes: Poly(ether-<I>b</I>-amide)(PEBAX® 2533) Block Copolymer
(University of Waterloo, 2002)The development of polymeric membranes for gas separations has provided an alternative to traditional energy-intensive processes, especially for hydrocarbon separations. Material studies of the membrane can provide ... -
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 ... -
Block Copolymer-Directed Assembly of Nanoparticles: Forming Mesoscopically Ordered Hybrid Materials
(American Chemical Society, 2002)Mixtures of diblock copolymers and nanoscopic spherical particles can yield well-ordered hybrid materials, which can be used for separation processes, catalysis, and optoelectronic applications. Predicting the morphologies ... -
Effect of Nanoscopic Particles on the Mesophase Structure of Diblock Copolymers
(American Chemical Society, 2002)Introduction. The fabrication of novel biomimetic photonic and electronic materials requires the manipulation of both organic and inorganic materials at the nanometer length scale. One possible means of achieving this level ... -
Rock Stability under Different Fluid Flow Conditions
(University of Waterloo, 2003)It is widely known in oil industry that changes in fluid flow conditions such as water breakthrough or unsteady flow due to well shut-in can lead to sand destabilization, with a possible consequent sand production. In ... -
Separation of Volatile Organic Compounds from Nitrogen by Hollow Fiber Composite Membranes
(University of Waterloo, 2003)Many industrial processes handling organic solvents produce volatile organic compounds (VOCs). These VOCs not only cause environmental pollution, but also represent an economic loss. VOC removal and recovery have ... -
Seeding Induced Assembly of Ionic-Complementary Peptide EAK16-II
(University of Waterloo, 2004)Seeding is an important variable in controlling or directing the assembly of peptides. The presence of impurities, responsible for creating a 'dip' in the surface tension versus peptide concentration profile, is used to ... -
Evaluation of instantaneous and cumulative models for reactivity ratio estimation with multiresponse scenarios
(University of Waterloo, 2004)Estimating reactivity ratios in multicomponent polymerizations is becoming increasingly important. At the same time, using cumulative models is becoming imperative, as some multicomponent systems are inherently so fast ... -
Optimal Online Tuning of an Adaptive Controller
(University of Waterloo, 2004)A novel adaptive controller, suitable for linear and non-linear systems was developed. The controller is a discrete algorithm suitable for computer implementation and is based on gradient descent adaptation rules. ... -
CO<sub>2</sub> Capture With MEA: Integrating the Absorption Process and Steam Cycle of an Existing Coal-Fired Power Plant
(University of Waterloo, 2004)In Canada, coal-fired power plants are the largest anthropogenic point sources of atmospheric CO<sub>2</sub>. The most promising near-term strategy for mitigating CO<sub>2</sub> emissions from these facilities is the ... -
Robust Control Design of Gain-scheduled Controllers for Nonlinear Processes
(University of Waterloo, 2004)In the chemical or biochemical industry most processes are modeled by nonlinear equations. It is of a great significance to design high-performance nonlinear controllers for efficient control of these nonlinear processes ... -
Experimental and Modelling Investigation of a Novel Tetrafunctional Initiator in Free Radical Polymerization
(University of Waterloo, 2005)An experimental and modelling investigation of a tetrafunctional initiator designed for free radical polymerizations is presented. Multifunctional initiators are believed to provide two advantages over traditional ... -
Effects of a Non-Condensable Gas on the Vapex Process
(University of Waterloo, 2005)It is estimated that Canada has 1. 7 trillion barrels of oil contained in oil sands located mainly in Alberta. However, the oil contained in the oil sands is a very viscous, tar-like substance that does not flow on its ... -
Kinetic Investigation and Modelling of Multi-Component Polymer Systems with Depropagation
(University of Waterloo, 2005)The phenomenon of depropagation or reverse polymerization for multicomponent polymerizations has been studied in detail. The monomer Alpha-Methyl Styrene (AMS) has been copolymerized with Methyl Methacrylate (MMA) and ... -
Techno-Economic Study of CO<sub>2</sub> Capture Process for Cement Plants
(University of Waterloo, 2005)Carbon dioxide is considered to be the major source of GHG responsible for global warming; man-made CO<sub>2</sub> contributes approximately 63. 5% to all greenhouse gases. The cement industry is responsible for ... -
Hydrogenation of unsaturated polymers in latex form
(University of Waterloo, 2005)Diimide generated from the hydrazine/hydrogen peroxide/catalyst system can be used to hydrogenate unsaturated polymers in latex form. As an economical and environmentally benign alternative to the commercial processes ... -
Assessment of the Potential Functional Diversity of the Bacterial Community in a Biofilter
(University of Waterloo, 2006)A biofilter removes biodegradable contaminants from air by passing it through a biologically-active packed bed. The microorganism community is of fundamental interest but has been the focus of few studies. This work ... -
Separation of Carbon Dioxide from Nitrogen Using Poly(vinyl alcohol)-Amine Blend Membranes
(University of Waterloo, 2006)Abstract In this research, a facilitated transport membrane was developed. The reactive membrane consisted of a carrier entrapped in poly(vinyl alcohol) "PVA" matrix cast on a polysulfone support. PVA was selected ... -
Simulation of Solid Oxide Fuel Cell - Based Power Generation Processes with CO<sub>2</sub> Capture
(University of Waterloo, 2006)The Solid Oxide Fuel Cell (SOFC) is a promising technology for electricity generation. It converts the chemical energy of the fuel gas directly to electricity energy and therefore, very high electrical efficiencies can ... -
Conductive Thermoplastic Composite Blends for Flow Field Plates for Use in Polymer Electrolyte Membrane Fuel Cells (PEMFC)<br><br>
(University of Waterloo, 2006)This project is aimed at developing and demonstrating highly conductive, lightweight, and low-cost thermoplastic blends to be used as flow field bipolar plates for polymer electrolyte membrane (PEM) fuel cells. <br><br> ...