Role of fine clays in bitumen extraction from oil sands
Why this work is in the frame
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Bibliographic record
Abstract
Abstract Clay minerals such as montmorillonite and kaolinite are considered as fine solids that could adversely affect bitumen extraction from oil sands. Colloidal forces between bitumen and fine clays and between bitumen and bitumen in the presence of montmorillonite clays were measured with an atomic force microscope. Although long‐range repulsive forces between bitumen and kaolinite or montmorillonite were similar, stronger adhesion forces were measured between bitumen and montmorillonite than between bitumen and kaolinite, in particular when calcium ions were present. The presence of montmorillonite clays with calcium addition diminished the adhesive forces between bitumen surfaces. Zeta potential distributions of bitumen droplets and clays, individually or in a mixture, were measured in the presence of 1 mM calcium ions. The results showed that kaolinite clays deposited weakly on the bitumen surface, whereas montmorillonite clays attached strongly to bitumen. Such strong montmorillonite clay attachment set a barrier for bitumen droplets to coagulate with each other and to attach to air bubbles. This behavior accounts for the observed detrimental synergetic effect of montmorillonite clays and calcium ions on bitumen recovery by flotation. © 2004 American Institute of Chemical Engineers AIChE J, 50: 1917–1927, 2004
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it