Removal of refractory organic compounds from water by adsorption using carbon xerogel cylinders coupled with in situ regeneration using H2O2 electro-generation and UV radiation
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
The process developed in this study is based on the adsorption of refractory organic compounds (ROCs) onto carbon xerogels, coupled with in situ regeneration of the adsorbent by H 2 O 2 electro-generation and enhanced ROC decomposition via OH radicals due to UV illumination. The in situ regeneration of the carbon materials aims to replace the usual thermal regeneration, which is costly and gradually degrades the adsorption properties. In this work, carbon xerogels are synthesized via a sol-gel process and molded as cylinders that are used as adsorbents for ROCs. The specific surface area of these cylinders varies between 30 and 680 m 2 /g when the resorcinol/sodium carbonate ( R / C ) ratio is modified between 100 and 1500 during the synthesis. Their excellent adsorption properties are highlighted for three model pollutants ( i.e. , p-nitrophenol, methylene blue, and ibuprofen), and it is determined that the optimal cylinders have an R / C ratio of 750. In parallel, the electro-generation of H 2 O 2 within these cylinders is demonstrated, reaching an H 2 O 2 concentration of 5 mg/L when using the most porous carbon cylinder ( i.e. , the optimal one). The use of UV light combined with the electro-generation of H 2 O 2 enables the efficient production of hydroxyl radicals. Finally, in situ regeneration of the optimal saturated carbon cylinders for the model pollutants is successfully performed. Indeed, the results of carbon cylinder regeneration for the three pollutants show that the H 2 O 2 electro-generation combined with the UV illumination completely mineralized the three pollutants previously absorbed on the carbon cylinders. These promising results open the way for a new method that regenerates adsorbent materials in situ without the use of thermal treatments.
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.
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 | 0.001 |
| 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 it