Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10377791 | Journal of Colloid and Interface Science | 2005 | 7 Pages |
Abstract
The pendant drop technique was used to measure the equilibrium and dynamic surface tensions of Athabasca bitumen vacuum residue (500â°C+) (AVR) between 150 and 280â°C. A significant (16%) slow (over hours) decrease from initial to equilibrium values was found. In addition, the effect of dissolved air on surface tension was studied at 150â°C by comparing dynamic surface tensions of air- or nitrogen-saturated AVR in contact with air or nitrogen. It was found that the presence of dissolved air significantly decreases the dynamic change in surface tension (from 16 to 5%). In order to perform the surface tension studies, the density of AVR was required. Archimedes method was used to measure the density of AVR from 98 to 335.8â°C.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
X.-S. Li, J.A.W. Elliott, W.C. McCaffrey, D. Yan, D. Li, D. Famulak,