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Variables affecting biodiesel production from zanthoxylum bungeanum seed oil with high free fatty acids / Junhua Zhang in Industrial & engineering chemistry research, Vol. 51 N° 9 (Mars 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 9 (Mars 2012) . - pp. 3525-3530 Titre : Variables affecting biodiesel production from zanthoxylum bungeanum seed oil with high free fatty acids Type de document : texte imprimé Auteurs : Junhua Zhang, Auteur ; Zhang, Lei, Auteur ; Lili Jia, Auteur Année de publication : 2012 Article en page(s) : pp. 3525-3530 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Production  Biodiesel Résumé : The Zanthoxylum bungeanum seed oil (ZSO) having high free fatty acids was successfully transformed into biodiesel by acid-catalyzed esterification and alkali-catalyzed transesterification and high conversion to biodiesel was obtained in a short time compared to acid-catalyzed transesterification. Methanol-to-oil molar ratio, catalyst amount, and reaction time were found to clearly affect the ferric sulfate-catalyzed esterification of ZSO. The acid value of ZSO was reduced to less than 2 mg of KOH/g with a methanol-to-oil molar ratio of 16:1, catalyst amount of 2%, and reaction time of 3 h, following transesterification using an alkaline catalyst. The conversion to biodiesel by potassium hydroxide-catalyzed transesterification was achieved above 98% under optimum conditions: a methanol-to-oil molar ratio of 6:1, catalyst amount of 1.5%, reaction time of 60 min, and reaction temperature of 60 °C. The biodiesel production process was also confirmed by 1H NMR and FTIR. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie200306w [article] Variables affecting biodiesel production from zanthoxylum bungeanum seed oil with high free fatty acids [texte imprimé] / Junhua Zhang, Auteur ; Zhang, Lei, Auteur ; Lili Jia, Auteur . - 2012 . - pp. 3525-3530. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 9 (Mars 2012) . - pp. 3525-3530 Mots-clés : Production  Biodiesel Résumé : The Zanthoxylum bungeanum seed oil (ZSO) having high free fatty acids was successfully transformed into biodiesel by acid-catalyzed esterification and alkali-catalyzed transesterification and high conversion to biodiesel was obtained in a short time compared to acid-catalyzed transesterification. Methanol-to-oil molar ratio, catalyst amount, and reaction time were found to clearly affect the ferric sulfate-catalyzed esterification of ZSO. The acid value of ZSO was reduced to less than 2 mg of KOH/g with a methanol-to-oil molar ratio of 16:1, catalyst amount of 2%, and reaction time of 3 h, following transesterification using an alkaline catalyst. The conversion to biodiesel by potassium hydroxide-catalyzed transesterification was achieved above 98% under optimum conditions: a methanol-to-oil molar ratio of 6:1, catalyst amount of 1.5%, reaction time of 60 min, and reaction temperature of 60 °C. The biodiesel production process was also confirmed by 1H NMR and FTIR. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie200306w