I made my first test batch of bio using new oil(1 liter) and drained off about 150ml of glycerin, after washes I only had about 450ml of bio? I used 4g Sodium Hydroxide. I made a second batch using used oil, I ran through a coffee strainer then heated to about 300 degrees checking for water. I didn't find any water. I used 8g of Sodium hydroxide and I let this batch set over night, then drained off the glycerin (175ml) and washed. I was careful not to waste any bio this time and wound up with a full liter of fresh bio. How much usable biodiesel should you have starting with 1 liter of oil and 250ml of methanol?
John [img]/ubbthreads/images/graemlins/shrug.gif[/img]
You should wind up with about the same amount of bio as the oil that you started with. 1 liter of oil equals approximately 1 liter of bio. The same is true about the glycerine 250 ml of methanol equals approximately 250 ml of glycerine plus or minus. If you ended up with 175 ml of glycerine and 1 liter of oil you were close enough to consider it a very successful reaction.
Thanks, I'm trying to figure this out. Is there a good way test the quality of the bio I made? I was thinking about putting it in a kerosene heater, just curious. I guess I did it right and it will burn?
John
Be careful with the kerosene heaters, I understand that only certain ones will work. I am not really sure about the quality tests, but, I know that one of those reddy heaters with the heat bar ignition system will burn bio diesel.
Just a liter in the truck?
If you heated it after washing it, you will never tell the diff. with a liter to say a 3/4 tank of petro diesel.
Rick H...
__________________ Omaha Metro Powerstroke Diesel Club
Pres Omaha Metro PSD Club Biodiesel Calculator
HIS
96 F250 4x4 auto super cab.
TS 4 Pos Chip, addaLeaf, Boss 8'-6" plow, , DIY AIC, Tymar DP, gutted EBPV, JS IDM, Tymar Intake, 4" Open exhaust, trio a-pillar gauges + 6 overhead gauges. TruCool 4590 Tran Cooler. On board air with dual horns. 4 corner strobes. AC mod with Twist, ISSPro Turbo Temp Monitor, Power Pedel mod, turbo ped mod, Warn Lock-outs, Swamps 175/173 99 IC & GTS Pipe Kit,Snow Performance Water/Meth inj (NOT hooked up!), chicken to use it!
Garmin GPS,Toughbook Laptop, All Mode Ham Radio.
HERS
97 F250 CC SWB 100% stock and going to stay that way! I lied, Shimmed, Tymar Intake. I lied again, kat dead! More lies.. 3" DP, Gutted EBPV, Turbo Pedistal Mod. Dyno'd 263 hp [color:"RED"] RDRCM#20 [/color]
It'll be 2/3 of a gallon when I wash this batch. I haven't heated it after washing, I was just letting it settle. I guess I should heat it, how hot should I get it?
John
You don't need to heat it , just let it settle. We typically do the reaction with heated oil, myself at 125 to 145* F. It will react without heat, but it does take longer. For instance, at 90* F the reaction on 40 gallons takes about an hour or so, at 125* F the reaction takes about 25 to 30 minutes, at 145*F the reaction takes about 15 minutes on my system anyway. With 2/3 of a gallon you could mix with 3 gallons of diesel and make B20 for your first test.
Congratulations, it sounds like you are well on your way, and keep us posted.
That was an EXCELLENT reply, just what I was looking for. I've been reading where you need to let it set for 8 hours or overnight, I noticed it didn't change much after an hour or so. I made another test batch tonight and reacted at 135-140 degrees. It was an experiment, your numbers give me more confidence in it. I will take your suggestion at B20 this weekend.
Thanks again
John
you can test it by adding 200ml of water and shake utill milky then let set, if you have two seperate layers after it settles than it is good stuff? i know there is a link some where to this test.
good luck
I reacted this 1 liter batch at 140 degrees or so, only used 225ml of methanol(all I had), 8g lye. I let it set overnight as I was sleepy and today the glycerin was pretty firm. I actually poured the bio off and the glycerin stayed in the bottle. This is my third batch, all of the others the glycerin was liquid, but this was the hottest I reacted. Did the temperature cause this and is it ok? I assume it is.
John
You used twice the lye for a one liter batch. While lye will harden gly, it did it faster I belive due to the double dose.
Might want to try and run the BD through another reaction and see if you get anymore gly out of it.
Rick H...
__________________ Omaha Metro Powerstroke Diesel Club
Pres Omaha Metro PSD Club Biodiesel Calculator
HIS
96 F250 4x4 auto super cab.
TS 4 Pos Chip, addaLeaf, Boss 8'-6" plow, , DIY AIC, Tymar DP, gutted EBPV, JS IDM, Tymar Intake, 4" Open exhaust, trio a-pillar gauges + 6 overhead gauges. TruCool 4590 Tran Cooler. On board air with dual horns. 4 corner strobes. AC mod with Twist, ISSPro Turbo Temp Monitor, Power Pedel mod, turbo ped mod, Warn Lock-outs, Swamps 175/173 99 IC & GTS Pipe Kit,Snow Performance Water/Meth inj (NOT hooked up!), chicken to use it!
Garmin GPS,Toughbook Laptop, All Mode Ham Radio.
HERS
97 F250 CC SWB 100% stock and going to stay that way! I lied, Shimmed, Tymar Intake. I lied again, kat dead! More lies.. 3" DP, Gutted EBPV, Turbo Pedistal Mod. Dyno'd 263 hp [color:"RED"] RDRCM#20 [/color]
Actually, some methonol boils off at this reaction temp, quickly. He should have seen bubbles when the methoxide was added. I believe that since the methonol that usually settles with the glycerine was not there, the glycerine hardened faster. Happens to me too, but only at the higher temps. Could be wrong about the reason, though.
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