Several readers emailed me to ask if I was sure the yield of
ethanol from acetic acid on a mass basis was only 75%. I am actually sure it is less than 75%. One mole of acetic acid will yield one mole
of ethanol. The molecular weight of
acetic acid is 60 the molecular weight of ethanol is 46. If the reactions are fully efficient and no reagent
is lost the maximum mass yield of ethanol from acetic acid is 46 divide 60 or
76.6%. With two reactions to get from
acetic acid to ethanol each step will have a yield loss. In the best of cases a 90% yield is pretty
much the highest one can expect in an industrial reactor. With two reactions one multiplies 76.6% by 90%
twice and the optimistic industrial yield of ethanol from acetic acid is 62%.
Secretary Vilsack and his team at the USDA should perform a
thorough and detailed analysis on the claims Zeachem has made. If indeed the process should stop at the first
step of making acetic acid then the USDA should significantly reduce the loan
guarantee and simply tell Zeachem to demonstrate the biological production of
acetic acid from cellulose and hemicellulose.
I am pretty sure the termite bugs will make a dilute solution of acetic
acid and then Zeachem can sell vinegar to Whole Foods for $25 a bottle and the
USDA may see five cents back on the dollar for the loan guarantees even if
these loan guarantees are reduced to $50 million from almost a quarter billion.
I suggest we all write to our representatives in the US
House as well as our Senators to apply $200 million of these savings to the
fiscal cliff. Spending money to make
wine out of vinegar makes no sense when there is no money to keep the
Whitehouse open to the public. Even
Marie Antoinette would not say if they have no wine let them drink vinegar. Let’s see what Obama, Vilsack, Boxer, Feinstein,
and Huffman do when I contact them.
Thank you for taking some time to write this post. Ethanol is a great alternative to gasoline and it works as a cheaper and more effective way of using fuel for many different purposes. You can make ethanol all by yourself, using and combining different ingredients, most of which you can find in your own home, along with minor equipment. See more http://survival-mastery.com/diy/how-to-make-ethanol.html
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