CFD Modelling for Recalcitrant Aldehyde Oxidations in VUV/UV Photoreactors
Bibliographic record
Abstract
This study presents a CFD model to investigate the degradation behaviour of the recalcitrant aldehyde in the VUV/UV photoreactor, with a focus on hydrodynamics, radical generation, and oxidation processes.The evaluation of photoreactor performance considers the impact of degradation and formation behaviour of primary and secondary pollutants.Results indicate a strong positive correlation between 185 nm VUV irradiance and OH radical generation.Acetaldehyde is rapidly degraded along the reactor, which has been almost completely removed by the midpoint.However, secondary organic contaminants, such as formic and acetic acids, impede complete mineralization, leading to a 24% reduction in total organic carbon at the outlet.The influence of hydrodynamics, including vortex generation and velocity profiles, on the spatial distribution of both primary and secondary contaminants is analysed, with a comparison of five RANS models.These findings provide valuable insights into optimizing reactor performance for effective contaminant degradation and mineralization.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 |
| 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 | 0.001 | 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".