| Titre : | Fast degradation and biodegradability improvement of reactive brilliant red X - 3B by the cobalt(II) / bicarbonate / hydrogen peroxide system (2012) |
| Auteurs : | Zhen Yang, Auteur ; Hong Wang, Auteur ; Min Chen, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 51 N° 34, Août 2012) |
| Article en page(s) : | pp. 11104-11111 |
| Note générale : | Industrial chemistry |
| Langues : | Anglais |
| Tags : | Hydrogen peroxide Biodegradability |
| Résumé : | The cobalt(II)-bicacbonate (HCO3―) complex is a very efficient catalyst for organic dye decolorization with H2O2 as an oxidant, but its mineralization degree is very low. One interesting alternative is the combination of the system with a subsequent biological step. With the aim of employing the Co2+-HCO3― system as a pretreatment method to dye wastewater, a typical azo dye, reactive brilliant red X-3B (X-3B), was selected as the model compound, and the biodegradability enhancement of the dye was investigated. The results showed that X-3B was effectively degraded by the Co2+-HCO3― system under various mild conditions, and the BOD5/COD ratio of the dye solution could markedly increase from 0.046 to higher than 0.46. The effluent treatment by the system was efficiently post-treated in a batch biological reactor with the COD removal around 44% after 8 h aeration, while a little decrease of the COD value of the raw solution was observed. |
| ISSN : | 0888-5885 |
| En ligne : | http://cat.inist.fr/?aModele=afficheN&cpsidt=26299435 |
