Coupling of Fenton and Biological Processes for Pulp BleachingWastewater Treatment
Bibliographic record
Abstract
In this work, Fenton and biological aerobic processes were sequentially coupled for real pulp bleaching wastewater treatment. Biological treatment was conducted on raw pulp bleaching wastewater and on Fenton-treated wastewater, to search for a suitable treatment layout allowing for COD and recalcitrant pollution abatement. Biological treatment was conducted in 0.5 L glass flasks, under magnetic stirring and temperature of 20 C. A ratio of COD:N:P = 100:7:1 was used, with initial concentration of volatile suspended solids of 3 gL -1 . Different initial loads as soluble COD were tested. Fenton process experiments (0.5 L batch) were conducted under natural wastewater pH of 2.48 0.20, 60 C, 6.0 mM of Fe 2+ (as FeSO4.7H2O) and 139 mM of H2O2. The combination of processes successfully removed COD and AOX from both raw pulp bleaching wastewater and Fenton-treated wastewater, achieving the highest removals with the highest initial organic loads. Maximum removal of AOX of 94 % was achieved in the wastewater undergoing Fenton treatment followed by biological treatment, while the highest removal of COD was achieved in the wastewater submitted to biological treatment followed by the Fenton process, 84%, with a final concentration of 0.48 g sCODL -1 .
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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".