Steps in production of ethanol from corn
Ethanol can be made by the fermenting of plain sugars and starches. Before fermentation can start, the corn has to be crushed by a method formally called conversion, which actually calls for beating or grinding. This can be achieved with the help of a hammer or mallet. Now you need to place the crushed corn into the steam boiler and cover it with water. Next add alpha amylase and glucoamylase enzymes. Allow the mixture to boil and let it sit for no less than two hours.
Ferment ethyl alcohol
The next step involves the process of fermentation. You will have to add yeast, which is the microorganism and is accountable for fermentation, as well as water. When the temperature of the crush is around 70 degrees, you can add the yeast. If feasible, fasten the boiler with a rigid cap containing a hole through which a pipe can be run to a container of water. This will help in the escaping of carbon bubbles but will at the same time prevent air from flowing in. Let the mixture ferment from five to seven days.
Distillation is a process through which the ethyl alcohol produced by fermentation has to be split from water. For this the liquid from the boiler has to be transferred to a simple still for heating and converting it into vapor. The alcohol vapor goes upward along a perpendicular coiled copper pipeline (or a large, double vertical pipe in larger stills) and distils at the higher end of the fractionating column. The water vapor, which evaporates at a high temperature, concentrates first, and then returns to the original chamber.
Filter and dehydrate
Separate out the distillate and dry up further. Regardless of the distillation procedure, the compressed material still comprises a portion of non-ethanol pollutants and some water. In the finishing phases of ethanol production, these adulterants are separated by passing it through a tripped carbon filter. Finally it can be distilled again if required until it attains 90% purity.
Addition to gasoline
To be applied as automobile fuel, corn ethanol is blended with gasoline as on its own ethanol does not burn with adequate energy to power most existing car engines. Blended with gasoline, in inconsistent ratios, ethanol makes the complete fuel burn cleaner. Conventional car engines cannot apply a mix of over 15% ethanol, while fuel flex cars can use nearly 85% ethanol.