Experimental study on supercritical water oxidation of CI Reactive Orange 7 dye wastewater using response surface methodology / Jie Zhang in COLORATION TECHNOLOGY, Vol. 128, N° 4 (2012)  

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 4 (2012) . - p. 323-330 Titre : Experimental study on supercritical water oxidation of CI Reactive Orange 7 dye wastewater using response surface methodology Type de document : texte imprimé Auteurs : Jie Zhang, Auteur ; Shuzhong Wang, Auteur ; Yang Guo, Auteur ; Donghai Xu, Auteur ; Yanmeng Gong, Auteur ; Xingying Tang, Auteur Année de publication : 2012 Article en page(s) : p. 323-330 Note générale : Errata (voir URL) - Bibliogr. Langues : Anglais (eng) Catégories : Colorants -- Détérioration Colorants -- Oxydation Colorants azoïques Eaux usées -- Epuration Fluides supercritiques Surfaces de réponse (statistique) Index. décimale : 667.3 Teinture et impression des tissus Résumé : Supercritical water oxidation of azo dye CI Reactive Orange 7 solution was investigated in a batch reactor. Response surface methodology was employed for the experimental design. Quadratic polynomial equations were established based on the results of the experiments. Optimisation of the process was then conducted in accordance with the simulated equations. The results show that removal of chemical oxygen demand, total organic carbon and total nitrogen can be achieved up to 99, 95 and 69%, respectively, and the predictive data were in reasonable agreement with the experimental results. It seems that response surface methodology is useful and feasible for the optimisation of CI Reactive Orange 7 dye wastewater supercritical water oxidation processing. The gas chromatography/mass spectrometry analysis results show that a large amount of 2,4-pentadienenitrile with diazo formed during the CI Reactive Orange 7 supercritical water oxidation reaction, which suggested that the azo firstly reacted to the diazo, and then converted into the final product of nitrogen. Note de contenu : - EXPERIMENTAL : Experimental apparatus and procedure - Materials and analytical methods - Calculation methods - Experimental design - RESULTS AND DISCUSSION : Model establishment for supercritical water oxidation of CI Reactive Orange 7 dye wastewater - Optimisation for supercritical water oxidation treatment of CI Reactive Orange 7 dye wastewater DOI : 10.1111/j.1478-4408.2012.00384.x En ligne : http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2012.00384.x/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15682 [article]

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