THE VARIATIONS EFFECT OF FERMENTATION TIME IN MAKING BIOETHANOL FROM BANANA (Musa paradisiaca) UNDERGROUND STEM WASTE

The study concerning the effect of variations in the fermentation time of bioethanol making from banana waste has been done. Underground stem waste of the banana plant was used and it can be harnessed into a product with added value. This waste was used as raw material for bioethanol. The most famous process of making bioethanol is the fermentation process. The Banana waste was processed into ethanol through enzymatic hydrolysis, fermentation and distillation. In this study, the variation used was the duration of fermentation time (1 day, 2 days, 3 days, 4 days, and 5 days). The results showed that the highest yield was at 3 days fermentation time with 3.97% ethanol content. Characterization of physical properties test was also carried out on samples that have optimum ethanol levels, including density, viscosity and solubility in water. The obtained densitu at the variation time of fermentation was 0.9961 g /cm3, the viscosity is 0.7517 mm2/sec and water solubility was categorized very soluble.