A solar photocatalytic floating reactive barrier for aqueous gas emissions interception and treatment
Bibliographic record
Abstract
Reduced sulfur compounds produced as a by-product of anaerobic digestion pose a significant health and environmental hazard for nearby communities. Here we assessed a novel floating reactive barrier (FRB), comprised of buoyant photocatalysts (BPCs), as a passive solution to intercept and treat malodorous compounds before crossing the air-water interface. Using industry provided samples of oil sands process water (OSPW) containing anaerobically produced aqueous sulfide, the FRB system was evaluated at both the bench and pilot scale. The photocatalytic FRB demonstrated a 95% reduction in H2S emissions at the lab scale and up to 98% at the pilot-scale under outdoor weather conditions and natural sunlight. H2S emissions intercepted by the FRB were found to be oxidized to non-volatile sulfate. An empirical reactive transport model describing the performance of the FRB is proposed informed by the results obtained in this work. The photocatalytic FRB described herein is proven to be an effective measure for the mitigation of potentially hazardous reduced sulfur compound emissions under solar UV conditions.
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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 | 0.001 |
| 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".