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Skip to Search Results- 1Cadien, Ken (Chemical and Materials Engineering)
- 1Etsell, Thomas H. (Chemical and Materials Engineering)
- 1Gibbs, Julianne (Chemistry)
- 1Liu, Qingxia (Department of Chemical and Materials Engineering)
- 1Subir Bhattacharjee (Mechanical Engineering)
- 1Xu, Zhenghe (Chemical and Materials Engineering)
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A study of the colloidal stability of mixed abrasive slurries of silica and ceria nanoparticles for chemical mechanical polishing
DownloadFall 2011
Slurry stability is an important factor in Chemical Mechanical Polishing (CMP) efficiency. However, few studies have been done in this respect. In settling tests at pH 4, adding various amounts of ceria to colloidal silica slurries was shown to change the stability of the resulted mixed abrasive...
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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 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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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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Fall 2014
In this study, the interactions between pentlandite and gangue minerals (i.e. serpentine, olivine, magnesite) were investigated by directly measuring the zeta potential distributions. In addition, an atomic force microscope (AFM) was used to measure the interaction forces between a silicon...
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Studying the Molecular Structure of Aqueous/Mineral Oxide Interfaces by Vibrational Sum Frequency Generation Spectroscopy and Zeta Potential Measurements
DownloadFall 2021
Water/mineral oxide interfaces are ubiquitous in various atmospheric, geological, biological, and industrial systems. Hence, studying such abundant interfaces is essential for understanding the macroscopic interfacial reactions, such as adsorption/desorption, dissolution, flocculation,...