Removal of solar red BA textile dye from aqueous solution by low cost barley husk: Equilibrium, kinetic and thermodynamic study
Bibliographic record
Abstract
Abstract The present study investigates the sorption potential of barley husk for the removal of solar red BA from aqueous solution. Sorption capacity, q (mg/g), of barley husk decreased with increasing initial dye concentration. The sorption equilibrium established within 90 min using 0.10 g biosorbent while it was prolonged to 135 min with increasing amount of biosorbent (0.25–0.50 g). The equilibrium data were fitted to Freundlich and Langmuir isotherms at different biosorbent doses. The results indicated the applicability of Freundlich isotherm at low‐biosorbent dose. Pseudo‐second‐order kinetic model was found to be best fit to the biosorption data with three biosorbent doses. The equilibrium thermodynamic data for the adsorption of the dyes gave Δ G 0 values −79.77 kJ/mol at 303 K indicated the process to be occurred spontaneously at low temperature. FTIR analysis and SEM imaging of biosorbent were also carried out. L'objectif de la présente étude est d'analyser le potentiel de sorption du son d'orge afin d'éliminer le BA rouge solaire contenu dans les solutions aqueuses. La capacité de sorption, q (mg/g), du son d'orge diminue lorsque les concentrations initiales de colorant augmentent. L'équilibre de sorption a été établi à 90 min en utilisant 0.10 g de biorsorbant, mais a été prolongé à 135 min avec une plus grande quantité de biorsorbant (0.25 à 0.50 g). Les données relatives à l'équilibre ont été harmonisées aux isothermes de Freundlich et Langmuir à différentes doses de biosorbant. Les résultats indiquent que l'isotherme de Freundlich est applicable avec de faibles doses de biosorbant. Selon les résultats, le modèle cinétique de pseudo‐second ordre correspond le mieux aux données de biosorption avec les trois doses de biosorbant. Les données de l'équilibre thermodynamique pour l'adsorption des colorants ont permis d'obtenir des valeurs de Δ G 0 de −79.77 kJ/mol à 303 K, ce qui indique que le processus s'est déroulé spontanément à faible température. Des analyses FTIR et une imagerie par MEB des biosorbants ont également été réalisées. © 2010 Canadian Society for Chemical Engineering
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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 | 0.000 | 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 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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 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".