[article] 
inIndustrial & 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 ; Lei Zhang, 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 ; Lei Zhang, 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