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Chemical Engineering: Recent submissions
Now showing items 261-280 of 994
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Developing Models Using Game Theory for Analyzing the Interaction of Various Stakeholders in Energy Systems
(University of Waterloo, 2020-01-16)Air pollution, global warming, climate change, and economic development are all reasons for governments around the world to incentivize the development of renewable energy generation technologies and plan for a transition ... -
Development of Low-cost Organic Solar Cells Using Polythiophenes as Donors
(University of Waterloo, 2020-01-15)The need to develop sustainable, eco-friendly energy sources is a major driving force in the development of efficient photovoltaic cells. Organic solar cells are a relatively new solar energy technology compared to their ... -
Engineered-Polysaccharide Reinforced Hybrid Composites for Automotive Applications
(University of Waterloo, 2020-01-09)In recent years, the automotive industry has undergone severe changes that challenges their conventional methods of mass vehicle production. This is due to many factors that include legislation that demand for increase in ... -
Designing Polymeric Sensing Materials: What are we Doing Wrong?
(Wiley, 2016-08-31)Gas analytes, or volatile organic compounds (VOCs), interact with polymeric sensing materials through various sensing mechanisms. The dominant sensing mechanisms are discussed for different types of VOCs, which are ... -
Towards a Chemically Defined Medium for Sf-9 Cell Culture: Micronutrients Reduce Dependence on Yeast Extract
(University of Waterloo, 2020-01-08)Spodoptera frugiperda clonal isolate 9 (Sf-9) insect cells in conjunction with recombinant baculovirus are an industrially relevant system for producing biologics. Sf-9 cells are capable of robust high-density growth in ... -
Functionalized Vanadium Oxide as the Cathode Material for Rechargeable Aqueous Zinc-ion Batteries
(University of Waterloo, 2020-01-08)Battery offers a viable solution for storing intermittent energy supplies associated with renewable energy production. Although lithium-ion batteries take up the most battery market, they are still limited by lithium metal ... -
Sensor Fault Detection and Isolation for Degrading Lithium-Ion Batteries in Electric Vehicles
(University of Waterloo, 2020-01-07)With the increase in usage of electric vehicles (EVs), the demand for lithium ion (Li-ion) batteries is also on the rise. A Li-ion battery pack in an EV consists of hundreds of cells and requires a battery management system ... -
Mass transfer in fibrous media with varying anisotropy for flow battery electrodes: Direct numerical simulations with 3D X-ray computed tomography
(Elsevier, 2019-03-16)A numerical method for calculating the mass transfer coefficient in fibrous media is presented. First, pressure driven flow was modelled using the Lattice Boltzmann Method. The advection-diffusion equation was solved for ... -
Predictive models and detection methods applicable in water detection framework for industrial electric arc furnaces
(Elsevier, 2019-09-02)This paper introduces the development of empirical predictive models and detection methods that are incorporated into a water detection framework for an industrial steelmaking electric arc furnace (EAF). The predictive ... -
A system dynamics model for optimal allocation of natural gas to various demand sectors
(Elsevier, 2019-09-02)Natural gas is the most promising fossil fuel in the transition to a low-carbon energy future, and many countries have long term plans to increase its share in their energy supply mix through pricing regulations. While ... -
Selectively leaching the iron-removed bauxite residues with phosphoric acid for enrichment of rare earth elements
(Elsevier, 2019-11-15)Bauxite residue (BR) is a hazardous industrial waste and also becomes an important reserve of rare earth elements (REE). An elegant process for achieving separation of REEs against silica from an iron-removed BR was ... -
Bi-objective short-term scheduling in a rolling horizon framework: a priori approaches with alternative operational objectives
(Elsevier, 2019-11)This study addresses short-term scheduling problems with throughput and make-span as conflicting objectives, focusing on a priori multi-objective methods. Two contributions are presented. The first contribution is to propose ... -
An ion conductive polyimide encapsulation: New insight and significant performance enhancement of sodium based P2 layered cathodes
(Elsevier, 2019-11)It is essential to stabilize the surface of P2 layered cathode materials at high cut-off voltages (>4.3 V) in order to construct high-energy sodium ion batteries (SIB) that are promising for commercial application. When ... -
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, ... -
Reverse Osmosis Desalination and Hybrid Membrane Processes for Brine Treatment
(University of Waterloo, 2019-12-11)Waste from seawater reverse osmosis desalination processes is commonly referred to as brine which is one of the obstacles creating environmental and economic inefficiencies. The objective of this work is to simulate the ... -
Novel Starch Nanocomposites
(University of Waterloo, 2019-12-09)Thermoplastic materials using bio-derived renewable resources are studied intensively and are widely used in applications including packaging, agriculture and other consumer goods. Starch-based plastics exhibit a good ... -
Computationally Efficient Field-Theoretic Simulations for Block Copolymer Melts
(American Chemical Society, 2019-11-12)Field-theoretic simulations (FTS) provide fluctuation corrections to self-consistent field theory (SCFT) by simulating its field-theoretic Hamiltonian rather than applying the saddle-point approximation. Although FTS work ... -
Thin film composite membranes via layer-by-layer assembly for pervaporation separation
(University of Waterloo, 2019-12-06)The aim of this study was to develop LbL membranes based on polyethyleneimine and graphene oxide (PEI/GO) and to investigate them for three different applications, namely the pervaporative desalination of high-salinity ... -
A Novel Back-Off Algorithm for the Integration Between Dynamic Optimization and Scheduling of Batch Processes Under Uncertainty
(University of Waterloo, 2019-12-04)This thesis presents a decomposition algorithm for obtaining robust scheduling and control decisions. It iteratively solves scheduling and dynamic optimization problems while approximating stochastic uncertainty through ... -
Calibration of the Flory-Huggins Interaction Parameter in Field-Theoretic Simulations
(2019)Field-theoretic simulations (FTS) offer a versatile method of dealing with complicated block copolymer systems, but unfortunately they struggle to cope with the level of fluctuations typical of experiments. Although the ...