Two‐phase partitioning bioreactors: the use of polymers for the <i>in situ</i> removal of ethanol
Bibliographic record
Abstract
ABSTRACT The use of polymers for in situ removal of ethanol, an inhibitory fermentation product, was investigated. Results from capacity experiments with six amorphous polymers showed that nylon 6,6 had the greatest capacity for ethanol, 0.123 g ethanol/g polymer. The Flory–Huggins solubility parameter for this polymer most closely matched that of ethanol and provided an initial indication that rational polymer selection based on the Flory–Huggins theory, which describes polymer–solute interactions, can be used to predict potential absorptive polymers for the uptake of target molecules. A hard, crystalline polymeric resin with surface‐adsorptive properties, DOWEX Optipore L493, was found to have a higher ethanol capacity, 0.346 g ethanol/g polymer. Batch fermentations of a glucose medium using Saccharomyces cerevisiae were conducted in both the presence and absence of the polymeric adsorbent, DOWEX Optipore L493. Although the addition of the resin had a positive effect on reducing the aqueous ethanol concentration via in situ ethanol removal, its presence in the medium, perhaps due to abrasive effects on the cells, diminished this positive performance. © 2012 Curtin University of Technology and John Wiley & Sons, Ltd.
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How this classification was reachedexpand
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) | 0.000 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".