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Full-Text Articles in Engineering
Surface And Interfacial Phenomena Between Soil And Oil, Md Firoz Ahmed
Surface And Interfacial Phenomena Between Soil And Oil, Md Firoz Ahmed
Electronic Theses and Dissertations
Crude oil and motor oil spills on land have severe environmental consequences that pose threats to both humans and natural resources. It is particularly important to know the flow behavior of oils to protect terrestrial ecosystems from this kind of damage. The spreading kinetics, contact angle (CA), and droplet baseline studies of crude oil and motor oils were investigated over several realistic soil-based matrices composed of topsoil (silt-dominant), sand, clay, and moisture. It was found that with an increase in moisture content (MC), the spreading area decreased, and initial spreading time increased for all given oil. The initial CA generally …
Cellulose Nanocrystals As 'Green' Emulsifiers Stabilized Crude Oil In Water Emulsions, Omayma Alazzam
Cellulose Nanocrystals As 'Green' Emulsifiers Stabilized Crude Oil In Water Emulsions, Omayma Alazzam
Electronic Theses and Dissertations
This study examines the ability of CNC to stabilize crude o/w Pickering emulsions. The effects of concentration of CNC, ionic strength of the aqueous phase, volume fraction of crude oil to water, and the presence of divalent ions on the stability of crude o/w emulsions were examined. Emulsions stabilized with different concentrations of CNC vary from 0.1 to 1.0wt% were prepared and examined by visual assessment for creaming analysis and microscopic pictures to analyze droplet size and size distribution. Low concentration of CNC as 0.1wt% didn’t help with forming stable emulsions. As the concentration of CNC stabilized the emulsions increased, …