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From:
"Stadem, Richard D." <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Stadem, Richard D.
Date:
Tue, 26 Aug 2014 15:31:55 +0000
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Karen, very true. However, cows each much more than corn, so the efficiency cycle is much higher than you think. 
And Pete's number of 40% for ethanol production was true about 4-5 years ago, but I believe today it is more like 20-25% and dropping rapidly.


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Karen Tellefsen
Sent: Tuesday, August 26, 2014 9:51 AM
To: [log in to unmask]
Subject: Re: [TN] NTC - I believe ... (my credo)

Ethanol from corn is a poor use of resources.  Ethanol from sugar cane is much better, but cane only grows in the tropics.

Using corn to feed cows is also a poor use of resources.  It takes 8 kg of corn to produce 1 kg of beef, this is not efficient. 
In addition, ruminant livestock produces about 28% of  human-related methane.
 
Karen Tellefsen




From:   Pete <[log in to unmask]>
To:     <[log in to unmask]>, 
Date:   08/26/2014 10:13 AM
Subject:        Re: [TN] NTC - I believe ... (my credo)
Sent by:        TechNet <[log in to unmask]>



Some good answers here, led me to do some more research

About 1/3 of the US corn crop goes towards livestock feed.
13% is exported.
40% is used for ethanol production
That leaves 14% for food and beverage (including oils, syrups, sugars)

Ethanol is being used in some cases to replace MTBE, to increase octane rating.  Why?  Because of it's resistance to ignition.  This is  very tiny percentage of the gasoline blend.  E10 and E85 are ethanol as an attempt to replace fossil fuels.  However, that resistance to ignition, when used at 10% or 86% is what makes it an inefficient fuel, increasing consumption by 3% or 25% respectively.  It takes one unit of fossil fuel to generate
1.3 units of (less efficient) ethanol fuel.

Since 1980, the ethanol industry has received $45B in government subsidies.

The windmills don't seem so bad anymore.

Pete




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