Abstract :
The fuel in Indonesia is decreasing, even in some remote places there was
lack of supply, therefore it was the time to find other alternatives such as bioethanol
as the waste from cassava skin converted into alternative fermentation through
fermentation process and distillation. The objectives of the research were to
investigate the effects of distillations process numbers for the fermentation products
form cassava skin to the calorie content, engine torque of motor Scopy 2012, and
engine power of motor Scopy 2012. Fermentation was carried out for 10 days to get
raw fuel so it could be processed into alternative fuel, then be processed with three-
level distillation to get bioethanol fuel. This study was a quantitative study, namely
experimental testing of alternative fuel resulting from the distillation of fermentation
of cassava leather waste.
The results of the research with three-level distillation were the first calori
was 2837,865 kal/g; the second was 3444,787 kal/g;the third was 3621,911 kal/g;
and pertalite is 10571,348 kal/g. For the torque testing, it could be concluded that the
average value of the first sample alternative fuel was 10.08 Nm; the second sample
was 10.34 Nm; and the third sample was 10.40 Nm. While the average value of the
conventional fuel is 10,63 Nm. This showed that the torque on conventional fuel is
better compared to alternative bioethanol fuel. The average power produced by the
first was 8,1HP; the second was 8,2H; and the third was 8,HP. While the average
power generated by the conventional pertalite is 8,2 HP. This showed that the power
on alternative was not really different.