Soaps/Acetone

[Julian]

This is looking all very interesting.

If I ever manage to make bio again, I'll give it a try!

[1958steveflying]

This is looking all very interesting.

If I ever manage to make bio again, I'll give it a try!

Yes I am glad I tried Acetone and put it out here, I think it could become a player in the process.

[Oilybloke]

I have had a demethed KoH  180 litre batch settling in my reactor for the last week or so, once a day I have been dropping the glyc, all nice and dark.
  Yesterday only a drip came out so I put in 200ml of Acetone and mixed for 20 minutes at ambient temp. Today I dropped 350ml of dark glyc ! So it has released more from the Bio. I will see what drops tomorrow and then take a sample for a 50/50 test.

  I may end up not washing this batch and the next batch will get the Acetone after demething and probably once it has cooled a bit.

So are you saying that you can add the acetone & not water wash? Does the acetone have to be removed from the bio?

Many thanks,
Nick.

[Head Womble]

That's interesting Steve, it's not going to work for NaOH users but KOH and ASM users may find it usefull.

200ml is quite a lot though, I used just 20ml in my water wash test.

[Head Womble]

So are you saying that you can add the acetone & not water wash? Does the acetone have to be removed from the bio?

Many thanks,
Nick.

I've a good feeling that acetone will help with settling after demeth (Tony is doing some testing on this).

Acetone is used by some (manly vey runners) to improove combustion, but only at 0.05% (I think), it has been found to have no benifit in increasing this.
So there should be no need to remove the acetone.

[Oilybloke]

So are you saying that you can add the acetone & not water wash? Does the acetone have to be removed from the bio?

Many thanks,
Nick.

I've a good feeling that acetone will help with settling after demeth (Tony is doing some testing on this).

Acetone is used by some (manly vey runners) to improove combustion, but only at 0.05% (I think), it has been found to have no benifit in increasing this.
So there should be no need to remove the acetone.

Thank you Mark. Why would it have no effect withNaOH users, and how would the presence of acetone affect an EN14214 test?

[Head Womble]

NaOH goes solid in the pipework when cooled, so you can't leave it overnight for more to drop out.

I have no idea about the EN test.

[Dickjotec]

NaOH goes solid in the pipework when cooled, so you can't leave it overnight for more to drop out.

I have no idea about the EN test.

It could be added before it goes to the settling tank,after demeth, though, that may cause faster/ more compleat settling.
Dick

[Head Womble]

NaOH goes solid in the pipework when cooled, so you can't leave it overnight for more to drop out.

I have no idea about the EN test.

It could be added before it goes to the settling tank,after demeth, though, that may cause faster/ more compleat settling.
Dick

This is what Tony is testing at pressent.

Hopefully he'll post some info soon.

[Head Womble]

I have been chatting to Jerry (CHUNDER on the other site) tonight,
he uses 50ml of acetone + 6l of petrol + recamended dose of vegyboost in 60L of oil (veg runner).

He has doorstop samples and has noticed that ones with acetone added hold on to the fats,
whereas the ones without drop the fats.
Both cloud as the temp drops but the acetone one still holds the fats.

So it seams that acetone has many uses in our little hobby.

[1958steveflying]

That's interesting Steve, it's not going to work for NaOH users but KOH and ASM users may find it usefull.

200ml is quite a lot though, I used just 20ml in my water wash test.

Not understanding why it wont work for NaOH users !
If it encourages more glyc to initially drop then there will be less if any that could set in the pipework, and ASM is Sodium too so also sets.

I will see what drops tomorrow, have a mix up and take a sample to do a 50/50 test.

The next batch will get 150ml but it will go in as soon as the temperature of the Bio has dropped after demeth, then I will see how the glyc drops over the following days.

I cant decide whether to wash this batch or not at the moment. I think first I want to cool it further and fuge it.

[1958steveflying]

.

He has doorstop samples and has noticed that ones with acetone added hold on to the fats,
whereas the ones without drop the fats.
Both cloud as the temp drops but the acetone one still holds the fats.

So it seams that acetone has many uses in our little hobby.

That must be a good thing for veg users, the last thing they want is fats dropping in the tank.

[nathanrobo]

[/quote]

 ASM is Sodium too so also sets.

[/quote]

That's the main reason that I went back to KOH.  It's sometimes useful to just leave to settle for a few days, rather than feel rushed to stay around until the glyc has properly dropped. 

[kamaangir]

I am not sure how long acetone would stay in solution of bio that is settling/being bubbled. It is quite volatile so will evaporate.

[Tony]

I agree, adding it during hot bubbling would probably make no difference as it'd get driven off.

I've done a batch, bubbled and then taken two samples (then at ambient temp), one of which has acetone in for comparison purposes.  It looks clear and golden so it'll be interesting to see the lighter soaps drop out over time.