Characterization of bioethanol from fermented oryza sativa glutinosa as an alternative renewable fuel and blended with gasoline fuel

The world's petroleum supplies are dwindling, and prices are rising sharply. Biofuel ethanol (C2H5OH) is a renewable energy through fermentation, distillation, and dehydration. Oryza sativa Glutinosa is the primary material for making bioethanol because it contains high enough carbohydrates. This research aims to first determine the characteristics of bioethanol from glutinous rice in terms of ethanol content, density, and viscosity. Secondly, please find out the results of increasing the octane number level after mixing it with RON 90 gasoline fuel. Sample mixing RON 90 gasoline fuel with 5%, 10%, and 15% bioethanol content. The test results of ethanol characteristics are 98.564% ethanol content, density 0.775 g/mL, and viscosity 1.44 cSt. There was an increase in octane number levels of 2%, 3%, and 5%. Bioethanol production needs to be further evaluated and improved to meet the essential parameters of INS standards. Further research can be done to improve bioethanol's characteristics to meet INS test standards. The research demonstrated that the blending of bioethanol had a positive impact on the fuel, resulting in an increase in the octane number values for all three fuels blends.