BIOETHANOL PRODUCTION FROM PEANUT SHELL

The importance of second generation biofuels is increasing day by day. Peanut is an agricultural product that is abundantly produced in Turkey. Peanut shell which is a lignocellulosic agricultural biomass may be used to produce biofuel. In experiments to optimise bioethanol production, different shell loading concentrations, pretreatment conditions, the usage of Accellerase 1500 enzyme, incubation conditions, inoculation ratios and different nitrogen source were studied. In the media preparing with peanut shell sugar, obtaining after enzymatic hydrolysis, the bioethanol concentration and yeast growth was obtained as 2.24 g/L and 0.86 (OD600) in the presence of 10% shell loading and 1 g/L soy flour at the end of 12 hours incubation time in aerobic conditions. Higher yeast growth such as 6.0 (OD600), lower bioethanol production were obtained when the inoculation ratio and incubation times were increased