Removal of Sulfur Compounds from Industrial Emission Using Activated Carbon Derived from Petroleum Coke
Why this work is in the frame
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Bibliographic record
Abstract
Activated carbon (AC) materials are porous structures generated by activation of either pyrolyzed plant or coke materials through physical or chemical means. While being widely used in industry for water, air, and product purification, ACs also may be suitable for the removal of pollutants from flue gas or sulfur compounds from natural gas fuels before combustion, provided the processes/materials are economic. ACs derived from petroleum coke (petcoke) that is often stranded and considered a low-quality byproduct are relatively inexpensive. To date, the pure component adsorption and selectivities for AC from petcoke have not been reported and compared to other reported ACs for practical application with flue gas, sour gas, or acid gas purification. Here we show that an AC from petcoke displays both high-selectivity and capacity toward SO2 and H2S. Single component volumetric adsorption experiments show adsorption as high as 554 mg g–1 for SO2 at p = 0.56 bar and 256 mg g–1 for H2S at p = 1 bar (T = 25 °C). This SO2 uptake is 66% higher than the previous highest SO2 uptake on an AC and 39 times as selective toward SO2 versus N2. These results suggest that AC from petcoke is an excellent material for recovering sulfur compounds from industrial flue gas or raw fuel, with the benefit of making use of a petroleum solid waste.
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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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.002 | 0.004 |
| 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