Thermal regeneration of spent coal-based activated carbon using carbon dioxide : process optimisation, Methylene Blue decolorisation isotherms and kinetics / Xin-Hui Duan in COLORATION TECHNOLOGY, Vol. 128, N° 6 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 6 (2012) . - p. 464-472 Titre : Thermal regeneration of spent coal-based activated carbon using carbon dioxide : process optimisation, Methylene Blue decolorisation isotherms and kinetics Type de document : texte imprimé Auteurs : Xin-Hui Duan, Auteur ; Srinivasa Kannan Chandrasekar, Auteur ; Wen-Wen Qu, Auteur ; Jin-Hui Peng, Auteur ; Li-Bo Zhang, Auteur Année de publication : 2012 Article en page(s) : p. 464-472 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bleu de méthylène Charbon actif -- Recyclage Colorants -- Adsorption Colorants -- Détérioration Dioxyde de carbone Surfaces de réponse (statistique) Index. décimale : 667.3 Teinture et impression des tissus Résumé : Spent coal-based activated carbon from the silicon industry has been used as raw material for the regeneration of activated carbon, with carbon dioxide as the regenerating agent. The regeneration process was optimised using response surface methodology and the optimum regeneration conditions were: regeneration temperature 985 °C; regeneration time 120 min; and carbon dioxide flow rate of 600 ml/min. The iodine number and yield of the activated carbon obtained under the optimum regeneration conditions were 1071 mg/g and 67%, with a Brunauer–Emmet–Teller surface area of 1270 m2/g and pore volume of 0.91 cm3/g. The regenerated carbon was tested for the removal of Methylene Blue dyes. The maximum adsorption capacity was found to be 395 mg/g and the equilibrium data fitted to the Langmuir isotherm model. The kinetic data indicated that the best fit corresponds to the pseudo-second-order kinetic model. Note de contenu : - EXPERIMENTAL : Regeneration of spent activated carbon - Design of experiments - Adsorption of methylene blue - RESULTS AND DISCUSSION : Thermal regeneration of coal-based activated carbon - Adsorption of methylene blue on the regenerated carbon - Adsorption kinetics DOI : 10.1111/j.1478-4408.2012.00401.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2012.00401.x/pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16452 [article]

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