Sunday, March 24, 2013

More on Acetic Acid and Ethanol

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.


  1. 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


  2. Call Girls in Gurgaon
    Are you looking for escort service in Gurgaon, we provide the best that would completely transform your experience. Our escorts are trained meticulously to deliver best service that you are looking for.

  3. Female Escort in Gurgaon
    If after a busy business tour, you are looking to ignite the evening then our call girls in Sohna Road are there to help you in the best way. We provide the service that would completely take away your work stress and revive you from within. So, why wait when you can get the best feeling of love at cost-effective prices. The escort service that we deliver in Sohna Road is among the best that you can get at the rates that we offer. We provide the best girls that would completely satiate you from each and every angle. So, visit us today and take your experience to a new level.


  4. Escorts Service in Mahipalpur
    If you have come from the West and you are captivated by the Asian beauty, in that case, we make sure that you get the best call girls in Mahipalpur to help you taste the Asian flavor in the best way. At Mahipalpur, we make sure that you are getting one heck of an experience with our girls. So, no matter whether it is official meeting or bachelor party, we are there for all your needs.