Degradation of aqueous methyl <i>tert</i> ‐butyl ether by photochemical, biological, and their combined processes
Why this work is in the frame
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Bibliographic record
Abstract
The degradation of aqueous methyl tert ‐butyl ether (MTBE) at relatively high concentrations was investigated by various photo‐induced oxidation processes such as UV/H 2 O 2 and UV/TiO 2 as well as biological processes and their combination. It was shown that the degradation of MTBE by UV/H 2 O 2 and TiO 2 photocatalytic followed a first‐order model with apparent rate constant of 1.31 × 10 −1 and 1.21 × 10 −2 min -1 , respectively. It was observed that UV/H 2 O 2 /TiO 2 process did not have any advantages over each of the other processes alone. The biodegradation of methyl tert ‐butyl ether (MTBE) was evaluated using aerobic mixed culture with three different approaches, including ultimate biological oxygen demand (BOD U ) assessment, nonacclimated, and acclimated mixed cultures. The apparent rate constant for the biodegradation of MTBE by nonacclimated mixed culture was 4.36 × 10 −2 day -1 . It was shown that the acclimatization of the mixed cultures enhanced the rate of biodegradation of MTBE to 3.24 × 10 −1 mg L -1 h -1 . Finally, the effects of the photocatalytic pretreatment of aqueous MTBE on its subsequent biological treatment were studied. It was observed that the rate of bioreaction was not enhanced and the photocatalytic pretreatment had adverse effects on its biological treatment so that the apparent rate constant decreased to 2.83 × 10 −1 mg L -1 h -1 .
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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) | 0.001 | 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 it