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Effect of Solid Contamination on Stability of Model Oil-Water Emulsions Open Access


Other title
solid contamination
Type of item
Degree grantor
University of Alberta
Author or creator
Khademi, Sima
Supervisor and department
Xu, Zhenghe (Chemical and Materials Engineering)
Examining committee member and department
Liu, Qi (Chemical and Materials Engineering)
Joseph, Tim G (Civil & Environmental Engineering)
Xu, Zhenghe (Chemical and Materials Engineering)
Department of Chemical and Materials Engineering

Date accepted
Graduation date
Master of Science
Degree level
Stabilization of water droplets in froth treatment process results in poor de-watering efficiency and potentially affects final bitumen quality. The purpose of this research is to study the effect of solid contamination by diluted bitumen on water droplet stabilization in water in oil emulsions. To model froth solids different types of minerals were ground to similar sizes and exposed to solutions of different bitumen concentrations as encountered in froth cleaning process. Complementary surface characterization techniques were used to characterize surface composition. It was revealed that all type of minerals were capable of adsorbing bitumen components when the solid surface was dry. To mimic the cleaning process, contaminated solids were added to the diluted bitumen and water so that the emulsion formation could be studied and linked with surface properties of solids. The results from this study indicated that partially hydrophobic kaolinite, siderite and silica could stabilize water droplets very well.
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