Physical and Thermal Characteristics of Solid Bio Ethanol

The production of solid bio ethanol is one way to develop bio ethanol downstream products. This study aims to determine the best solid bio ethanol characteristics in various concentrations of bio ethanol and ratio of bio ethanol with stearic acid. Research using Factorial Random Block Design. Factor I is the concentration of bio ethanol with 3 levels i.e. 70% (v / v), 80% (v / v), and 90% (v / v). Factor II is the ratio of bio ethanol with stearic acid to 3 levels i.e. 2: 1 (w / w); 1: 1 (w / w) and 1: 2 (w / w). The results of the study shown that the concentration of bio ethanol and the ratio of bio ethanol and stearic acid significantly affect the specific fuel consumption, the interaction is very significantly to hardness, density, long flame, burning residue, calorific value, thermal efficiency and water boiling test value, but does not affect the ash content of the solid bio ethanol. The best characteristic was obtained from bio ethanol concentration treatment of 90% in the ratio of bio ethanol and stearic acid of 2: 1 with a hardness value of 0.938 N / cm2, density of 0.702 g/cm3, ash content of 0.0002%, residual burning of 1.93%, calorific value of 7.003,47 cal /g and thermal efficiency of 79.99%, Water Boiling Test of 36.95 minutes and Specific Fuel Consumption of 72.65 g / L