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Skip to Search Results- 1Chachula, Francis.
- 1Fotovati, Maryam
- 1Ifill, Roy O.
- 1Kim, Sun
- 1Kirk, Alistair S.
- 1Molla, Shahnawaz Hossain
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Fall 2009
The work presented in this dissertation provides a novel technique of manipulation of colloidal entities during membrane filtration based on an AC electrokinetic phenomenon called dielectrophoresis. First, the influence of dielectrophoretic (DEP) forces created on a membrane surface to levitate...
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Spring 2010
Poor settling of solids increases land requirement for tailings containment and imposes severe constraints on the water balance. Consequent to these considerations, the alternating current electrocoagulation (AC/EC) technique emerged as a candidate for enhancing the settling behaviour of...
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Spring 2011
A major challenge to any “solvent-based” bitumen extraction technology is the removal of suspended fine solids from the hydrocarbon medium (i.e. diluted bitumen). To address this problem, we examined how colloidal solids could be made to aggregate in a hydrocarbon medium and thus be separated by...
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Fall 2011
The removal of solid particulates from crude oils and hydrocarbon streams is a common challenge in refining. Finding a method for efficient removal of the suspended solids in the oil streams is the main objective of this work. Paraffinic and aqueous treatment and the combination of these two...
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Fall 2013
In the development of a numerical model for the water cycle on Mars, adsorption of water vapour in the Martian regolith acts as a significant sink and retards the transport of mass. Adsorption on Mars cannot be studied directly, so a numerical model was created, and a diffusion sorption...
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The Influence of Specific Ions and System Architecture on the Recognition and Reactivity of Two Charged Materials: DNA-Modified Gold Nanoparticle Aggregates and Planar Silica
DownloadFall 2014
DNA functionalized gold nanoparticles (GNP–DNA) offer simple colorimetric nucleic acid sensing with high selectivity and sensitivity. Consequently, they are promising in genetic profiling, disease diagnostics, and forensic applications. In the presence of a target nucleic acid, GNP–DNA forms...
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Fall 2014
Interactions of finely dispersed abrasive particles in chemical mechanical planarization (CMP) slurries play a vital role in determining the polishing performance. In this study, coupled influence of hydrodynamic and colloidal interactions on the attachment of nanosized ceria (CeO2) particles to...
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Fall 2017
Nonlinear optical techniques are widely used for surface analysis, as they are surface specific and can be used to probe interfaces of insulators such as silica. Silica is commonly found in nature such as reservoirs of natural water and oils. Nonetheless, it is not clear how silica interacts with...
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The Behaviour and Interactions of the Silica/Water Interface Studied through Nonlinear Optics
DownloadFall 2020
The chemistry of silica in contact with water is rich and diverse. These two substances are among the most ubiquitous on the surface of the Earth. Yet, despite many investigations into the interactions between silica and water, there is still more to discover. In aqueous solution, the silica...