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Biodiesel production from Neem seeds (Azadirachta indica A. Juss) oil by its base-catalyzed Transesterification and its Blending with Diesel

Abstract Biodiesel, a non-toxic, biodegradable and renewable fuel can be a solution to non-environmentally friendly and exhaustible fossil fuels. The triglycerides transesterification is the most used process in the biodiesel production. However, the blending of the oil with diesel is also used. Neem (Azadirachta indica A. Juss) seeds oil (NSO), a non-edible oil available in large quantities in Senegal may be a second generation feedstock for biofuel production. In this research, the study is focused on its transformation into biodiesel by NaOH catalyzed transesterification and its blending with diesel. The NSO physicochemical properties were determined and compared to those of diesel. The NSO consists of four major fatty acids: oleic acid (C18:1), linoleic acid (C18:2), stearic acid (C18:0) and palmitic acid (C16:0). These fatty acids represent 95.80% of all the fatty acids present in the NSO. The study of the effect of catalyst level, performed at 75°C and for molar ratio alcohol-oil 6:1 has revealed that a rate catalyst of 1% (w/woil) is more effective. The kinetic study of the reaction confirmed the hight speed of the formation of the ethyl esters (NSOB) with conversion maximum rate achieved after 90 minutes. The physical and thermal properties of neem seeds oil biodiel (NSOB) are close to those of diesel. However, those of the SNOdiesel blend (NSODB) are closer to those of the diesel. Keywords: Azadirachta indica, neem seeds oil, biodiesel, transesterification, blending, diesel.


Auteur(s) : Diedhiou Djibril, Diatta Mamadou Lamine, Faye Mamadou, Vilarem Gerard, Sock Oumar et Rigal Luc
Pages : 13-19
Année de publication : 2015
Revue : Research Journal of Chemical Sciences
N° de volume : 5
Type : Article
Mise en ligne par : FAYE Mamadou