Fast degradation and biodegradability improvement of reactive brilliant red X - 3B by the cobalt(II) / bicarbonate / hydrogen peroxide system / Zhen Yang in Industrial & engineering chemistry research, Vol. 51 N° 34 (Août 2012)  

Fast degradation and biodegradability improvement of reactive brilliant red X - 3B by the cobalt(II) / bicarbonate / hydrogen peroxide system [texte imprimé] / Zhen Yang, Auteur ; Hong Wang, Auteur ; Min Chen, Auteur . - 2012 . - pp. 11104-11111.
Industrial chemistry
Langues : Anglais (eng)
in Industrial & engineering chemistry research > Vol. 51 N° 34 (Août 2012) . - pp. 11104-11111

Mots-clés :	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
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