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#1
02-16-2011, 12:15 AM
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BioDiesel yield?
I'm considering producing my own biodiesel, but I think I should ask about yield.
How much raw WVO produces 1 gallon (or 1 liter, whatever you want to use) of biodiesel I can put in my tank? This will help me determine how many sources I need to get "under contract".
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Mike Frederick 1986 300SDL, 240K+ miles 1985 300D KaliKar, 270K+ miles 
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#2
02-16-2011, 09:17 AM
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You should get close to 100% yield. You add appx. 20% methanol to the oil and extract about that much glycerine (depending on the quality of the oil).
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John Schroader bio burnin' 83 300D, '83 300 SD, '79 240D "I've never met a man who was good at making excuses who was good at anything else" Ben Franklin "You cannot permanently help a man by doing for him what he could and should do for himself" Abraham Lincoln
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#3
02-16-2011, 12:00 PM
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Quote:
I need to plan space, storage and re-wire the portion of the building not used for repair. Am hoping to collect then make 50 gallons at a time, using it in a mix with dino fuel, at the same time, monitoring performance and doing the cleanouts of the fuel tank 
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Strelnik Invest in America: Buy a Congressman! 1950 170SD 1951 Citroen 11BN 1953 Citroen 11BNF limo 1953 220a project 1959 180D 1960 190D 1960 Borgward Isabella TS 2dr 1983 240D daily driver 1983 380SL 1990 350SDL daily driver alt 3 x Citroen DS21M, down from 5 3 x Citroen 2CV, down from 6
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#4
02-16-2011, 02:18 PM
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You should get pretty close to as much biodiesel as you have veggie oil. You'll probably loose a little, but not much.
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Andrew '04 Jetta TDI Wagon  '82 300TD ~ Winnie ~ Sold '77 300D ~ Sold
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#5
02-17-2011, 12:00 AM
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100%
One of the tests of a successful production run is that you get as much fuel as you start with oil. Not completely definitive but if you get much more or less fuel than you start with you are doing something wrong either too much lye or too little methanol or too hot and you are losing methanol to evaporation. Try not to commit to taking too much oil at first until you get good at it , it is easy to bog down with fixing failed batches. If you look up my username and posts (same as here) on biodiesel infopop forums you can get an idea of what I found to work. I have not changed my design much since it has worked pretty much flawlessly for the past 5 years. Cheers Dan
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It's always something simple 91 300D 603.960 (from japan) 194K 92 Toyota Diesel Landcruiser HDJ81-t 116K 02 Golf TDI new head courtesy of PO 87 300D 97 BMW 525 TDS Wagon 5spd bunch of Onan and other diesel generators
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#6
02-18-2011, 11:25 AM
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I react at 110-120F. I use 9gal Meth to react 50gal WVO, and it yields about 47 gals BD.
6 restaurants (1 japanese, 2 pizza, 2 chinese, 1 bar) keep my two mercedes running and my NE home warm all winter.
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Mark in MA 05 MB E320CDI 402k Granite Grey Metallic 05 MB E320CDI 267k Black 05 MB E320CDI 232k White 05 MB E320CDI 209k Tectite Grey 99 Dodge 2500 Cummins 5sp 148k 62 Jeep CJ-6 120k
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#7
02-20-2011, 12:32 AM
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You will yield about 95% of original WVO amount after you separate glycerin.
Homebrew biodiesel is tough stuff to get right. I homebrewed for a long time, and then switched over to running 2-tank WVO because it is so much easier it's ridiculous. Be mindful before investing big dollars in a setup. It seems like a great idea until you get into the nitty gritty. It's easy to make biodiesel - it's labor intensive and difficult to make biodiesel suitable to run in your car long term.
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------------------------------- '85 300D, 'Lance',250k, ... winter beater (100k on franken-Frybrid 3 Valve Kit) '82 300D, 'Tex', 228k body / 170k engine ... summer car '83 300TD Cali Wagon 210k, wife's car
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