Estimation of Carbon Recovery and Biomass Yield in the Biofiltration of Octane
Bibliographic record
Abstract
Octane was eliminated from contaminated air in a biofilter at concentrations ranging from 500–2,000 ppm, with a maximum elimination capacity of 90 g/m3 h. After periods of shutdown of up to 30 days, the biofilter rapidly reacclimated, recovering its destruction and removal efficiency (overall octane removal) within 1–2 h of restart; this recovery was shown to be due to biodegradation and not simply adsorption of the octane. Carbon recovery during restart was estimated to be approximately 0.25 mol CO2/mol C, based on on-line carbon dioxide monitoring, corresponding to a nonsteady state biomass yield of 1.19 g biomass/g octane. In separate respirometry experiments, carbon recovery was estimated to be 0.85 mol CO2/mol C, corresponding to a biomass yield of 0.24 g biomass/g octane. These results, together with literature values for other systems, suggest that for biofilter modeling purposes a steady-state value of biomass yield in the range 0.17–0.43 g biomass/g carbon source would be appropriate, but dynamic models will require more detailed analysis of the biodegradation pathway.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 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 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".