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Skip to Search Results- 1Bayati, Mohsen
- 1Chen, Xue
- 1Cheung, Aaron
- 1Chong, Jeng Yi
- 1Farrokhzad Ershad, Navid
- 1Habibzadeh Gharehbaba, Alireza
- 7Department of Chemical and Materials Engineering
- 3Department 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. Mark R. Loewen (Civil & Environmental Engineering)
- 1Dr. Mohamed Gamal El Din (Department of Civil and Environmental Engineering, University of Alberta)
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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 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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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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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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Fall 2016
Fluidized beds offer efficient solutions for segregation of clay and bitumen pellets in the oil production industry. However, the hydrodynamics of these systems is not well-known and they are mostly operated as ``black box''. The removal of clay pellets in the mechanical separation of oil sands...
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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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Three-Dimensional Numerical Investigation on Velocity Field and Mixing Characteristics at Channel Junctions
DownloadFall 2014
Channel confluence is an important component in river systems. The flow dynamics and mixing processes associated with such geometry are highly three-dimensional and complicated. In this study, a commercial software, ANSYS CFX, was employed to investigate the flow structures and 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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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 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...