Biodiesel From Lard

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5,336
Location
London, AR
I picked up a 5 gallon bucket of used oil from a donut shop. It is a solid when they put it in the fryer and it turns back solid around 90F. So as an experiment I made a Liter test batch. It was interesting because even though it was used it titrated at 1Gram per liter. I did heat the oil to liquefy it. It made biodiesel very quick. The glycerin dropped out in about 2 minutes when I quit stirring. This biodiesel is good to run in the summer, but the cloud point is to high to run in cold weather. Solid Veggie oil: (lard/shortening)  - Liquified after heating:  - Biodiesel from the above:  -
 

Bio-T

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5,336
Location
London, AR
You are correct, animal fat is used for lard. What I have is shortening and is somewhat granular, but as an old timer, every thing to me that is solid in cooking is lard. [Big Grin] What was interesting to me is that the biodiesel was as clear and crisp and golden color as any I have made. And to top it off, I did not wash it, that picture was taken as soon as it cooled.
 
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12,385
Location
Northern CA
quote:
Originally posted by Bio-T: You are correct, animal fat is used for lard. What I have is shortening and is somewhat granular, but as an old timer, every thing to me that is solid in cooking is lard. [Big Grin] What was interesting to me is that the biodiesel was as clear and crisp and golden color as any I have made. And to top it off, I did not wash it, that picture was taken as soon as it cooled.
I'm not a connisewer of cooking fat, but that stuff looks pretty good for used fast food cooking fat. Keep those people happy.
 

Bio-T

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5,336
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London, AR
It actually came from a Donut Shop. It has the pure sugar smell. I can get as much as I want, but the cost to heat it to liquefy and then convert to biodiesel ups my cost. I will use this stuff if my oil supply runs dry. [Smile]
 
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42.4N 85.7W
How long do you have to keep it > 90F? How much higher than 90? Even here in Michigan, anything left in the sun during the summer gets darn hot, I'd think Arkansas would be even worst [better, depending on how you look at it]. Could you use solar heat as part of your reaction process? Dave
 

Bio-T

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London, AR
Dave, I can keep the lard above 90 degrees in the sun, but in 8 hours a 5 gallon bucket never liquifies enough to use. In the actual biodiesel reaction process it only takes about 2 hours of heat (80 liter batch). So the cost benefit of using Solar to heat the oil would not ever be a payback in my mind. I am saying this because of the cost factor to build and then pipe the hot water and make coils etc.
 
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Millbrae, CA
"Isn't lard pig fat by definition?" Correct Tallow is cows lard makes a good bio diesel would be called methy lardate for lard versus methyl soyate for soybean oil based Bio. bruce
 
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Location
'Stralia
Pablo, I've thought of that before. Interesting add campaign, where lack of walking using cars instead provides the fuel to get you around.
 
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461
Location
Fredericksburg, VA
Do you think that the hydrogenated vegetable oil, or tallow or lard for that matter, will give a better energy output or better lubricity than normal veggie oil biodiesel? I know gelling will be a concern.
 
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