Re: [Biofuel] Ethyl esters biodiesel - was (no subject)

[Willyhlii]

Keith:  Thanks for responding.  I do a second distillation using calcium 
chloride and then 3A molecular sieve to dry the alcohol.  So far I have been 
using 50% lard mixed with 50% soybean oil (both used) . I am in the process 
of eliminating the lard and using used soybean oil with a titration of 2 
grams NaOH per liter. I use KOH at the U. of Idaho's recommended amount of 1.3 
Kg per 100 liters of oil. I have been using 1/3 purchased methanol mixed with 
 2/3 self produced ethanol and using 20% alcohol by volume in the reaction. 
 The ethanol is 99% pure. Lee
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Re: [Biofuel] Ethyl esters biodiesel - was (no subject)

[Keith Addison]

Hello Lee

I have been making biodiesel using ethanol for about a year.  Methanol is
$500 a barrel in Hawaii. I'm having some difficulty with partial conversions
with substantial vegetable oil remaining dissolved in the ethyl esters
demonstrable by the methanol test.  I have been using 99% alcohol I make from
sugarcane that I grow.

How do you get such a high proof? Distilling it only gives about 
95.6%. Are you using zeolyte to dry it?

What kind of oil are you using, and is it new or used? If used, 
what's the titration?

Are you using KOH or NaOH?

I am currently using all distillation fractions
including the light and heavy alcohol portions.  Any thoughts on 
whether it would
be better to use only the ethanol fraction in order to encourage more
complete conversions?

I'd suggest using only the ethanol fraction in a test batch, then 
including the heads and tails in a second test batch, and comparing 
the results, via the methanol test and the wash test.

Quality tests
http://journeytoforever.org/biodiesel_vehicle.html#washtst

HTH - best

Keith

Lee


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