titrating oil with whites at the bottom

[willbuild]

The man in the white coat on utube says 15 mins. he should know!!!!!

[Julian]

Oh, well, if Youtube says 5 mins, what do the rest of us know.

Have a look at craigggy making bio on Youtube ...

Just a few gems to look out for ....

"Muslim cloth."

"Grisol."

"The water is too flat."

"If it bursts into flame, you know you've gone too hot."

"If I pull that element out now, it'll burst into flame, it'll burst into flame.  And if that busts into flame, all the oil might burst into flame, so I'm not even going to show you ... I have done it of course!"

The use of a broken badminton racket to suspend the heater is a lovely touch!


Making bio diesel part 1 ...
http://www.youtube.com/watch?v=xWAthSmJ6Nc

Making bio diesel part 2 ...
http://www.youtube.com/watch?v=jHXjGmUzs60

Making bio diesel part 3 ...
http://www.youtube.com/watch?v=xXyT20LUkkA

If you want to use Youtube as a mentor, the very best of luck

[willbuild]

comment was tongue in cheek

[Julian]

I knew that, ideal opertunity to reintroduce my besty craigggy

[Jamesrl]

Nige,

They're talking about the first stage 10/90 drop out, triglyceride precipitation will continue until the methanol is crystal clear, this can take many hours.

I leave my first stage 10/90 for at least 60mins but also allow a little extra catalyst to compensate for any further drop out due to continueing cloudiness.

So as for Julian's statement, I have to agree,  second stage dosing is at best a good guesstimation.

[Julian]

Nige,

They're talking about the first stage 10/90 drop out, triglyceride precipitation will continue until the methanol is crystal clear, this can take many hours.

I leave my first stage 10/90 for at least 60mins but also allow a little extra catalyst to compensate for any further drop out due to continueing cloudiness.

So as for Julian's statement, I have to agree,  second stage dosing is at best a good guesstimation.

Thank you Jim!  It's tough being a little soul voice of reason, all on your own out here in bio cyberspace.

[Head Womble]

I normally take a sample of the first stage as I turn off the pump, leave it until there is a clear split between bio and gly,
then remove 10ml from the top for the 10/90, once the gly has been drained from the reactor (1hr of settling) I do my calcs for the second stage.

So the 10/90 gets between 30 and 45 mins to settle.

I found I got a clear pass more often when using ASM than I do with NaOH.

[Julian]

I normally take a sample of the first stage as I turn off the pump, leave it until there is a clear split between bio and gly,
then remove 10ml from the top for the 10/90, once the gly has been drained from the reactor (1hr of settling) I do my calcs for the second stage.

So the 10/90 gets between 30 and 45 mins to settle.

I found I got a clear pass more often when using ASM than I do with NaOH.

You can human centrifuge the sample to speed the glycerin separation, but I haven't yet tried human centrifuging my horribly expensive centrifuge tube (if that makes any sense!) ... I'd hate to see it fly over the hedge into nextdoor's garden!

[Jamesrl]

 It's tough being a little soul voice.

I didn't know you could sing let alone Soul, do you sing Gospel as well?

[Jamesrl]

Been doing a bit of reading of late, the two stage method we all use today, Titless, was first developed in 1937 to improve quality and yield, nothing new there then.

One very interesting point was that bio will hold suspended glycerol even if you water wash, though washing will reduce it.

So the dropout experienced by our own Tony in his boot loaded cubie may well be glyc, they recommend centrifuging to remove it.

I'll sort out the links for those that may be interested.

[nigelb]

Nige,

They're talking about the first stage 10/90 drop out, triglyceride precipitation will continue until the methanol is crystal clear, this can take many hours.

I leave my first stage 10/90 for at least 60mins but also allow a little extra catalyst to compensate for any further drop out due to continueing cloudiness.

So as for Julian's statement, I have to agree,  second stage dosing is at best a good guesstimation.

I've just re-read the thread and have seen no reference as to people talking about stage 1 drop out. Perhapes I've made an error. Can some one can point me to it.

However, I made it quite clear that I was talking about an "instant pass" of a 5/45 following stage two.

[Chug]

Just a reminder of some testing I did on 3/27 tests. conclusion post @  20-12-2008 at 09:35 AM and next post.
http://www.vegetableoildiesel.co.uk/forum/viewthread.php?tid=10613#pid...

A cloudy test will, most of the time, result in eventual fallout, even if its just a tiny amount, BUT can sometimes be from residual glyc or different temps between meth and bio, but good bio will pass clear n bright at pretty much any test temp and any temp difference between meth n bio

Jim, where did you get the titless method in 1937 info from? or was you there?  I think I first tried it late 2008/early 2009, I was calling it modded 2 stage then though.

[Julian]

Been doing a bit of reading of late, the two stage method we all use today, Titless, was first developed in 1937 to improve quality and yield, nothing new there then.

One very interesting point was that bio will hold suspended glycerol even if you water wash, though washing will reduce it.

So the dropout experienced by our own Tony in his boot loaded cubie may well be glyc, they recommend centrifuging to remove it.

I'll sort out the links for those that may be interested.

Bit late, but I'd be interested in having a look at the stuff you found, please.

[Jamesrl]

Bit late, but I'd be interested in having a look at the stuff you found, please.

I'll get a link sorted, the info came to me via an email attachment.