Long-term prevention of organics dissolution from wastewater sludge treated with coal fly ash
Bibliographic record
Abstract
The present study is concerned with stabilization of wastewater sludge mixed with coal fly ash and carbon black for a treatment period ranging from 28 d to 2.5 years. To evaluate the stabilization degree of treated sludge, the dissolved organic carbon (DOC) of leachate from the sludge was measured. Results demonstrated that after 28 d of treatment, the DOC of the leachate was reduced from 2320 to 86 mg/L, when sludge was mixed with 45 wt% coal fly ash and 3 wt% carbon black. The DOC of the leachate after 1 year was higher than that after 28 d of treatment, which might be caused by decomposition of organic materials in the initial sludge. However, there was no appreciable difference in DOC values between 1 and 2.5 years treatment. It was concluded that organic materials were prevented from leaching out from the sludge by hydration products formed by coal fly ash and by carbon black adsorption. Key words: coal fly ash, wastewater sludge, carbon black, dissolved organic carbon, long-term stabilization.
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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".