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Skip to Search Results- 7Department of Chemical and Materials Engineering
- 2Department of Civil and Environmental Engineering
- 2Department of Mechanical Engineering
- 1Department of Chemical & Materials Engineering and Department of Mechanical Engineering
- 1Department of Earth and Atmospheric Sciences
- 1Department of Mathematical and Statistical Sciences
- 3Kresta, Suzanne (Chemical and Materials Engineering)
- 2Kresta, Suzanne (Chemical Engineering)
- 1Dr. Carlos F. Lange
- 1Dr. Mark Loewen (Department of Civil and Environmental Engineering, University of Alberta)
- 1Dr. Mohamed Gamal El Din (Department of Civil and Environmental Engineering, University of Alberta)
- 1Fleck, Brian (Mechanical Engineering)
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A General Framework of Optimal Stochastic Optimization with Dependent Data: Multiple Optimality Guarantee, Sample Complexity, and Tractability
DownloadSpring 2023
We consider stochastic optimization in settings where the distribution of unknown parameters is observable only through finitely dependent training samples. Using the Sample Averaging Approximation ({SAA}), we specifically study the data-driven procedure in which, instead of receiving samples...
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Spring 2016
There is a fundamental need to improve grit removal techniques for municipal wastewater treatment plants (WWTP) to meet newer effluent standards and to deal with the rapid growth of urbanization and industrialization. In response to this need, secondary and tertiary treatment processes are being...
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Spring 2015
Colloidal-collector interactions are of fundamental importance in separation and filtration technologies. Here, the effect of collector grains on the behavior of colloidal particles was studied in two different experimental systems, i.e., column studies with stationary collectors and batch mixing...
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Concentration and Mixing Effects on the Production of Amine Hydrochloride Salts in a Confined Impinging Jet Reactor
DownloadFall 2013
A Confined Impinging Jet Reactor (CIJR) was used to react 4, 4’-methylene dianiline (MDA) with hydrogen chloride (HCl) in order to study formation of the aminehydrochloride (AHC) salts, unwelcome byproducts in the manufacture of polyurethanes. The effects of several processing variables (local...
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Spring 2019
In oil sands extraction, the removal of heavy materials from a bitumen feed is often facilitated by solvent addition treatment processes. These processes mix solvent with bitumen feed to cause the precipitation of heavy products. The settling properties of these heavy products as they separate...
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Measurement and Analysis of Changes in Drop Size Distribution during Bitumen Clarification using Image Analysis
DownloadFall 2013
The impact of mixing on demulsifier performance is studied using image analysis. Three experimental campaigns based on fractional factorial designs were performed in a CIST (Confined Impeller Stirred Tank), varying demulsifier bulk concentration (BC) and injection concentration (IC), mixing time...
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Fall 2017
Bitumen froth is an intermediate product of bitumen upgrading which must be treated to remove solids and water. De-mineralization and de-watering occur through a settling operation in which the addition of a diluent and a demulsifier are crucial to its success. This work explores the effect of...
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Fall 2013
The impact of mixing on water removal from diluted bitumen and bitumen froth is studied, with the goal of maximizing demulsifier performance. The relative effects of bulk concentration, mixing intensity, mixing time and injection concentration on the demulsifier performance are evaluated. A...