Browsing Chemical Engineering by Title
Now showing items 674-693 of 987
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Observability and Economic aspects of Fault Detection and Diagnosis Using CUSUM based Multivariate Statistics
(University of Waterloo, 2010-12-08)This project focuses on the fault observability problem and its impact on plant performance and profitability. The study has been conducted along two main directions. First, a technique has been developed to detect and ... -
Oil Sands Bitumen Emulsion Upgrading by Using In Situ Hydrogen Generated through the Water Gas Shift Reaction
(University of Waterloo, 2014-12-09)Canada has a large reserve of oil sands bitumen which is highly viscous and contains high percentages of asphaltenes and heteroatoms. Currently hot water extraction or steam injection is used in recovering the bitumen as ... -
On the Prediction of Gas Hold-up in Ebullated Bed Reactors
(University of Waterloo, 2019-09-19)Commercial ebullated bed reactors (EBRs) are three-phase fluidized bed systems used for hydroprocessing (upgrading) of bitumen, a major Canadian resource. The objective of this thesis is to improve the understanding of the ... -
On the role of the microporous layer in PEMFC operation
(Elsevier, 2009-03-01)The condition of liquid water breakthrough at the cathode of polymer electrolyte fuel cells (PEMFC) is studied experimentally and data on corresponding water saturation and capillary pressure are provided for gas diffusion ... -
On the Techniques for Efficient Sampling, Uncertainty Quantification and Robust Control of Stochastic Multiscale Systems
(University of Waterloo, 2020-08-25)In order to better understand and leverage natural phenomena to design materials and devices (e.g. biomedical coatings, catalytic reactors, thin conductive films for microprocessors, etc.), stochastic multiscale models ... -
On the use of physical boundary conditions for two-phase flow simulations: Integration of control feedback
(Elsevier, 2018-10-04)The sensitivity of two-phase flow simulations using the Euler–Euler model on the inlet boundary conditions (BCs) is studied. Specifically, the physical relevance of Dirichlet uniform inlet velocity BCs is studied which are ... -
One-pot synthesis of porous silica-supported ultrafine Ni nanoparticles as efficient and stable catalyst for selective hydrogenation of benzophenone
(Elsevier, 2019-12-15)In this work, we report a silica-supported ultrafine Ni catalyst for the selective hydrogenation of benzophenone. This material was developed by a facile one-pot co-assembly syntheses strategy, using Ni(II) chelated alginate ... -
OpenCMP: An Open-Source Computational Multiphysics Package
(University of Waterloo, 2021-08-24)Computational multiphysics offers a safe, inexpensive, and rapid alternative to direct experimentation, but there remain barriers to its widespread use. One such barrier is the generation of conformal meshes of simulation ... -
Operational maps between molecular properties and environmental stress cracking resistance (ESCR)
(Wiley, 2019-01-20)Environmental stress cracking (ESC) is one of the main failure mechanisms involved in polymer fractures. This paper focusses on the environmental stress cracking resistance (ESCR) of polyethylene (PE) in which ESC occurs ... -
Optical Properties of Lithiated Graphite In Relation to a Lithium Ion Battery Fiber Optic Sensor
(University of Waterloo, 2018-02-12)As the demand for lithium-ion batteries (LIBs) has increased, research to increase their life and reliability has also continued. To further advance the ability of determining the material status of a battery during ... -
Optimal and Sustainable Design of Integrated Biorefineries for Microalgae and Municipal Solid Waste Processing
(University of Waterloo, 2023-01-20)With drastic advances occurred in society over decades, there have been growing concerns towards global energy demand and sustainable feedstock supply. Particularly, biomass emerged as one of the potential energy sources ... -
Optimal Design and Operation of Polygeneration Systems Incorporating Renewable Energy Sources and Chemical Production
(University of Waterloo, 2022-02-16)With the energy transition underway, there is a consensus effort from both worldwide governments and industry, to facilitate the integration of more renewable energy into power grids. However, the main challenge with ... -
Optimal Design of Hybrid Membrane Networks for Wastewater Treatment
(University of Waterloo, 2008-05-17)Water consumption and wastewater generation depletes water resources and has a destructive impact on the environment. Recent attention has aimed at preserving water resources and preventing pollution through several routes. ... -
Optimal Integration of Renewable Energy Sources in Oil Refinery Operations
(University of Waterloo, 2017-04-27)Petroleum refining is one of the energy intensive sectors of the oil and gas (O&G) industry. With increase in global energy demand and declining energy return on energy invested (EROEI) of crude oil, global energy consumption ... -
Optimal Location of New Industries in Existing Industrial Areas Accounting for Environmental and Health Risks
(University of Waterloo, 2016-05-13)Nowadays, a major problem throughout the world is air pollution caused mainly by the fast growth in industry. This growth leads to negative impacts on human health and ecosystems directly or indirectly by chemical reactions ... -
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. ... -
Optimal Planning and Operation of Power to Gas Energy Hubs in Transitioning Electricity Systems
(University of Waterloo, 2018-08-24)Challenges faced by an electricity sector transitioning towards a lower carbon footprint can be seen as an opportunity for energy technologies that are able to address them. Surplus energy generation is one of the biggest ... -
Optimal Processing Pathway for Sludge-to-Energy Technologies: A Superstructure Optimization-Based MINLP Model
(University of Waterloo, 2022-04-27)The perception of sewage sludge has been increasingly changing from being a waste, that is a burden to the environment and society, to a useful resource of materials and renewable energy. There are several available ... -
Optimal processing route for the utilization and conversion of municipal solid waste into energy and valuable products
(Elsevier, 2018-02-10)A systematic design of municipal solid waste (MSW) management system can lead to identify a promising and/or sustainable way of handling MSW by processing it into energy and valuable products. In this study, a systematic ... -
Optimal Renewable Energy Integration into the Process Industry and Energy Infrastructure Using the Multi-Energy Hub Approach with Economic and Environmental Considerations
(University of Waterloo, 2019-01-08)Fossil fuels are an integral part of the current energy infrastructure and the major contributor towards carbon emissions. Energy intensive industries and local energy framework, inclusive of the transport sector, can be ...