Adsorption des métaux lourds contenus dans l'acide phosphorique industriel par une bentonite algérienne activée. modélisation
Bibliographic record
Abstract
Dans le present travail, nous nous interessons a la caracterisation physico-chimique de l'acide phosphorique pretraite produit a l'unite des engrais phosphates d'Annaba (Est-Algerie) et a l'activation de la bentonite brute, utilisee pour l'elimination des metaux lourds contenus dans l'acide phosphorique pretraite. Le pretraitement de l'acide phosphorique industriel est realise au moyen de charbon actif pour eliminer les matieres organiques dissoutes successibles de gener la recuperation des metaux lourds. L'activation de la bentonite est effectuee par voie chimique, en utilisant l'acide sulfurique H 2 SO 4 . Deux parametres importants ont ete examines, la concentration de l'acide et la temperature. Des tests d'adsorption de zinc (II), de cadmium (II) et de chrome (III), contenus dans H 3 PO 4 5,5 M pretraite (30% P 2 O s ), ont ete realises dans differentes conditions de temperature, de pH et de quantites de bentonite, dans le but de developper un procede de fixation a l'echelle du laboratoire. Une modelisation du procede a ete egalement realisee. L'application du modele, defini dans le domaine experimental 1,25≤pH ≤2,50; 0,50g≤ masse de bentonite ≤2,5 g; 20°C ≤ T ≤ 70°C, a permis de donner un rendement moyen de 88 % pour l'adsorption du zinc (II) et 89 % pour le cadmium (II) et le chrome (III).
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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 | 0.005 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.003 |
| Science and technology studies | 0.002 | 0.008 |
| Scholarly communication | 0.001 | 0.003 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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; both teacher heads agree on what is shown here.
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".