Quenching H2O2 Residuals Using Granular Activated Carbon: Effect of pH and Biodegradation
Bibliographic record
Abstract
This thesis has two parts:Part IResidual H2O2, dissolved oxygen and pH data were observed for quenching of H2O2 by virgin, 1 year and 2 years old GAC in pilot columns. All GACs completely quenched 4 mg/L of H2O2 but not 10 mg/L H2O2. Active reaction sites in the columns were concentrated near the top for virgin and middle for aged GAC. Part IIPseudo first order reaction constant, k, for H2O2 quenching was measured for six different GACs, at three different age levels, in the pH range: 6.50 - 12.50. We observed a marked increase in k values above pH 11.00.H2O2 quenching by sand showed an increase from ~5% to ~10% in k value and from ~3% to ~10% in percentage quenching between week 3 and week 10 of bench scale experiments suggesting that biofilm was able to induce H2O2 quenching ability in an otherwise inert media.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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) | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), 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".