In Hugoton Ks, Abengoa bioenergy biomass of Kansas is producing bioethanol from
ID: 1510148 • Letter: I
Question
In Hugoton Ks, Abengoa bioenergy biomass of Kansas is producing bioethanol from corn stover. Suppose in 1 dry ton (1K) of corn stover, 50% are sugar compounds; we assume 90% of the sugar can be hydrolyzed into fermentable sugars (glucose) and sugar fermentation efficiency is 90%.
A) How many gallons of ethanol can be produced from this 1 dry ton of corn stover? (1 gallon of ethanol weighs 3 kg).
B) It was found that if this 1 dry ton of corn stover is burned for heat, how much more energy can be released comparing to being converted into bioethanol, then what is the point to do such a conversion?
Explanation / Answer
A) 1 ton = 907.185 kg
Sugar compounds = 0.5*907.185 kg = 453.5925 kg
Ethanol = 0.9*0.9*453.5925 = 367.490025 kg = 122.469975 gallon
B) The point of coversion is to get ethanol for chemical/personal uptake. Also, ethanol produces less pollution and is a more compact form of fuel
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