Conception d'un distilleur-rectificateur pour la production semi-industrielle de l'ethanol/[ Conception of a distiller-rectifier for semi-industrial production of the ethanol ]

The main cause of global warming is the abusive exploitation of nonrenewable natural resources mainly oil. Benin is one of the cassava producing countries that can be used for production of ethanol. The latter is a renewable source of energy that can enable Benin to circumvent this escalation of fossiliferous fuels. This study set itself the objective the design of necessary technical and semi-industrial production of bioethanol. The results of our works have helped to optimize the hydrolysis process of cassava with enzyme preparation based germinated sorghum. With 20%-25% of the this enzyme preparation, optimum time of 4 hours of hydrolysis, under the experimental conditions the fermentation lasts 30 hours with 2 g of instant yeast into 100 ml of medium. The double-distilled of the fermented mash in the device designed and manufactured has given the ethanol at 94 degrees. This apparatus produces up to 3kg/h of ethyl alcohol. It may be improved by the integration of heating system automatically adjustable.