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#1
01-31-2006, 06:59 PM
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Biofuel looks like peanut butter
I have make around 500 gal of biofuel. I do not take any short cuts and have had no problems-fuel looks and tests good. I thought it was a no brainer. The last batch that I made,turned hard and looks like peanut butter. Has anyone else had any bad batches of bio. Any ideas what went wrong?
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#2
01-31-2006, 07:17 PM
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Oh my!
__________________
1981 300D 147k 1998 VW Jetta Tdi 320k 2001 Dodge Ram 2500 141k 1979 300D 234k (sold) 1984 300D "Astor" 262k(sold) Mercedes How-To and Repair Pictorials I love the smell of diesel smoke in my hair 
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#3
01-31-2006, 07:29 PM
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Peanut butter!?! I've had some that was the same color right when I added the methoxide mixture but after an hour of stirring it was always the right color. Its always came out right, too. I wonder what could make it turn to that consistancy.
__________________
Seth 1984 300D 225K 1985 300D Donor body 1985 300D Turbo 165K. Totaled. Donor Engine. It runs!!! 1980 300SD 311K My New Baby. 1979 BMW 633csi 62K+++? Dead odo
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#4
01-31-2006, 08:18 PM
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Did you use partially hydrogenated oil? I used some and got something that was thick and dark colored. It was the glycerides that didn't get turned into methyl esters. You end up having to use a ton of lye to get the reaction to go to completion.
Try going to Infopop or BiodieselNow and ask there if you haven't already.
__________________
Andrew '04 Jetta TDI Wagon  '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#5
01-31-2006, 08:34 PM
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Did your test batch turn out the same way?
__________________
BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif 15 VW Passat TDI 00 E420 98 E300 DT 97 E420 Donor Car - NEED PARTS? PM ME! 97 S500 97 E300D 86 Holden Jackaroo Turbo D 86 300SDL (o\|/o)
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#8
01-31-2006, 11:22 PM
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Is the peanut butter regarding the consistancy???
I had a medium sized batch (15gal) not go to completion...didn't look so good... Not sure about peanut butter but it was much thicker than it should have been...
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#9
02-01-2006, 12:09 PM
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My guess is a combination effect,
The lye and methanol not being mixed well, and water in the oil You may have gotten an incomplete reaction, just enough to suspend the water in the oil. Maybe try heating a small amount of the peanut butter and see if it seperates back out. Careful there may be unreacted methanol in there. Do not want things to go boom.
__________________
When the power of love overcomes the love of power the world will know peace. Jimi Hendrix
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#10
02-01-2006, 01:52 PM
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Did you try a titration to make sure you used enough lye? I would try one if you didn't, and I would do it 2-3 times to make sure it is right. If it titrates higher than 4-5 I wouldn't use the oil. You have to use ton of lye when the titration levels are that high. In one of my test batches I didn't add enough lye and got a solid dark brown mass.
__________________
Andrew '04 Jetta TDI Wagon '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#11
02-01-2006, 03:47 PM
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Check the temperature that you did the reaction at. Get it up to around 120 degrees F. I have penut butter right now, but it is outside and the cold weather will do that to it. Diesel is better in cold. Try and mix it with some fuel addative.
DK
__________________
1983 300sd 253,000 + 13,000 (10,000+ on veggie and biodiesel)= 266,000 1983 300sd 390,000 (Leaky windshield seal) Known to me as the shower car. Parts car now! 1 junk 300sd Watch out for the skunk that lives underneith it!
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