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Efficacy of fresh and used supported copper-based catalysts for ferulic acid degradation by wet air oxidation process / Bholu R. Yadav in Industrial & engineering chemistry research, Vol. 51 N° 48 (Décembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 48 (Décembre 2012) . - pp. 15778-15785 Titre : Efficacy of fresh and used supported copper-based catalysts for ferulic acid degradation by wet air oxidation process Type de document : texte imprimé Auteurs : Bholu R. Yadav, Auteur ; Anurag Garg, Auteur Année de publication : 2013 Article en page(s) : pp. 15778-15785 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Oxidation  Wet  air  Catalyst Résumé : Pulp mill effluents are not suitable for conventional biological treatment processes due to the presence of lignin which is found in cellulosic raw materials. The present study was undertaken to remove ferulic acid (a lignin model compound) from synthetic wastewater using a catalytic wet air oxidation (CWAO) process. The hydrothermal process was performed in the presence of three heterogeneous catalysts, namely, 60% CuO/40% CeO2, 60% CuO/40% Al2O3, and 60% CuO/40% 13X, in a temperature range of 90―160 °C, while the total pressure was maintained in the range of 0.55-0.8 MPa. CuO and CeO2 mixture (prepared by the sol gel peroxo method) exhibited the best performance and removed ca. 70% chemical oxygen demand (COD) from the wastewater at 120 °C temperature. The spent catalyst showed appreciable decline in the COD removal during reuse. The detailed results obtained from the catalyst characterization (fresh and used) and WAO studies are presented in the paper. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26710614 [article] Efficacy of fresh and used supported copper-based catalysts for ferulic acid degradation by wet air oxidation process [texte imprimé] / Bholu R. Yadav, Auteur ; Anurag Garg, Auteur . - 2013 . - pp. 15778-15785. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 48 (Décembre 2012) . - pp. 15778-15785 Mots-clés : Oxidation  Wet  air  Catalyst Résumé : Pulp mill effluents are not suitable for conventional biological treatment processes due to the presence of lignin which is found in cellulosic raw materials. The present study was undertaken to remove ferulic acid (a lignin model compound) from synthetic wastewater using a catalytic wet air oxidation (CWAO) process. The hydrothermal process was performed in the presence of three heterogeneous catalysts, namely, 60% CuO/40% CeO2, 60% CuO/40% Al2O3, and 60% CuO/40% 13X, in a temperature range of 90―160 °C, while the total pressure was maintained in the range of 0.55-0.8 MPa. CuO and CeO2 mixture (prepared by the sol gel peroxo method) exhibited the best performance and removed ca. 70% chemical oxygen demand (COD) from the wastewater at 120 °C temperature. The spent catalyst showed appreciable decline in the COD removal during reuse. The detailed results obtained from the catalyst characterization (fresh and used) and WAO studies are presented in the paper. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26710614