Influence of Pressure and Temperature on Permeate Flow while Concentrating Aronia Juice by Nanofiltration
Why this work is in the frame
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Bibliographic record
Abstract
Cilj ovog rada je bio koncentrirati sok aronije postupkom nanofiltracije uz upotrebu membrana Alfa Laval-NF i istražiti utjecaj procesnih parametara tlaka i temperature na protok permeata pri tlakovima od 50 i 55 bara, s primjenom i bez primjene hlađenja. Koncentriranje se provodilo na laboratorijskom uređaju za nanofiltraciju Lab Unit M20 s pločama i okvirima, primjenom kompozitnih membrana tipa Alfa Laval-NF. Uzorci permeata i retentata uzimani su u određenim vremenskim intervalima, svako 12 minuta. Pokusima se pokazalo da je sok aronije moguće koncentrirati procesom nanofiltracije do maksimalnog udjela suhe tvari od 26,6 %. Povećanjem koncentracije suhe tvari u retentatu tijekom procesa koncentriranja smanjuje se i protok permeata. Permeabilnost i indeks koncentriranja suhe tvari u permeatu su bili veći kod više koncentracije suhe tvari u retentatu i kod više temperature. Tijekom koncentriranja soka aronije nanofiltracijom dolazi do zagrijavanja soka aronije, od početnih 10 °C na temperaturu oko 45 °C u procesu bez primjene hlađenja, odnosno na 24 °C u procesu s primjenom hlađenja.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 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