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is different classification of Biofuels which are the first-generation
biofuels, second generation biofuels, third generation biofuels and fourth
generation biofuels. In this research this study will focus on first generation
which are usually produce by a plants or organic matter. First generation
biofuels use a simple process, the common first-generation biofuel is ethanol
by the process of fermentation. Process Improvement (as cited in United Nation,
2008) Ethanol is being fermented from various source of starch this includes
corn, wheat, grain and etc. It is produce by smashing the certain source of
ethanol like corn into small particles and then water is added with the enzymes
to convert it for the fermentation.
The mashed yeast mixed with the yeast so that after fermentation it will
produced ethanol..
After the completion of the fermentation during the process of heating the
ethanol will evaporates while the remaining corn and yeast remains. The ethanol
vapors are condensed into a liquid by the distillation the ethanol is being
separate from the raw materials that was being fermented (University of
Illinois, 2009) The properties of ethanol is the appearance of odor taste,
solubility ethanol is much soluble in the water and organic solvents, density
pure ethanol is neutral, boiling point, melting point, freezing point, flash
point.. (“Alcohol (Ethanol) Chemical and Physical Properties”, 2016) The
researcher will use the waste of Gourd, Mango and Citrus Aurantium Linn,
because these are the common waste that people can find in everywhere such as
market and outside of the malls who sell different fruits aside from that it is
also affordable. Those waste in market can be useful if the people are aware
that it can be useful in a way of producing ethanol fuel.


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