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Comparative Study on Production and Characterization of Bioethanol from Agricultural Waste Materials
Abstract
Production and characterization of bioethanol from lignocellulosic substrates that include sugarcane bagasse, corn cob and cassava peels were investigated in this research study. The raw materials (sugarcane bagasse, corn cob and cassava peels) were sorted, washed, cleansed to remove dirts and dried to remove moisture contents, and crushed into ground form to increase substrate’s surface area of contacts and sieved through a mesh size of 2 mm. The bioethanol distillates were produced through simultaneous liquefaction, saccharification and fermentation, and extraction by simple distillation using yeast enzyme (Saccharomyces cerevisiae). The physicochemical and fuel properties of the produced bioethanol distillates that include ph value, specific gravity, refractive index, octane number, flash point, pour point, cloud point were evaluated. It was deduced that octane number, specific gravity, and flasf point were within the standard ASTM value while characterization properties such as pour point, cloud point and refractive index fell out of ASTM range. Thus, this is due to the different lignocellulose raw materials applied in bioethanol production. Also, the recovery volume of the produced bioethanol distillates were studied and compared at different operating or recovery temperature of 70°C and 80°C respectively. Thus, bioethanol distillates produced from sugarcane bagasse substrate showed higher recovery volume or yield while bioethanol distillate produced from cassava peels substrate or feedstock yielded the least recovery volume of product respectively among the three lignocellulosic substrates applied.
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