Experimental and Numerical Analysis of Biological Regeneration of Perchlorate Laden Ion-Exchange Resins in Batch Reactors
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Removal of perchlorate ions from ion-exchange resins is essential for the economical treatment of perchlorate contaminated water. The objectives of this study were to prove that single-use ion-exchange resins could be regenerated in biological batch systems and to develop a numerical model that could be used to predict the time for regeneration of perchlorate from exhausted ion-exchange resins under varying conditions. This research uniquely addresses both the biological and physical/chemical aspects of the regeneration of single-use resins. Experimental studies demonstrated that perchlorate exhausted resin was effectively regenerated by a salt-tolerant, perchlorate-reducing culture. A numerical model was developed that incorporates physical desorption and biodegradation parameters. Results suggest that the model generates an acceptable correlation to experimental data and can predict the time to regeneration when no perchlorate is detectable in the aqueous phase in equilibrium with the ion exchange resin. A sensitivity study showed that biological activities have the most significant effects on the biological regeneration process. Results of this research can be directly applied to process design for biological regeneration of perchlorate exhausted single-use ion-exchange resins.
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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 | 0.001 |
| 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) | 0.001 | 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