Degradation of 4-Chlorobenzoïc Acid in a Thin Falling Film Dielectric Barrier Discharge Reactor
Bibliographic record
Abstract
The degradation of 4-chlorobenzoïc acid (4-CBA) in water was performed using an innovative plasma dielectric barrier discharge (DBD) process. The influence of the electrode material directly in contact with the solution was examined. The roles of power and frequency discharge on the treatment efficiency were also evaluated. The hydrodynamic behavior of the solution and physical aspect of the discharge were studied by contact angle measurements and intensified charge-coupled device (iCCD) acquisition, respectively. Analyses showed that the use of stainless steel (SS) resulted in a better efficiency of the process compared with the use of brass (B). The degradation of 4-CBA was 80 and 50% for SS and B, respectively, after 1 h of plasma discharge. The presence of NO x in the plasma discharge and corrosion reaction occurring on the brass surface limited the degradation of the 4-CBA. It was possible to observe two main byproducts and identify the 4-chlorosalicylic acid or 4-chlorohydroxybenzoïc acid. Ultimately, the discharge frequency was reduced to limit the production of NO x species.
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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 | 0.001 | 0.005 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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".