white layer in 50/50 test

[Julian]

Possible.  Have you tried human centrifuging it?

http://www.biopowered.co.uk/wiki/Tips_and_wrinkles_1#Human_centrifuge

[willbuild]

Did 5 mins of human centri and left for a few hours,still no split.
so took a 200ml sample, heated to 60c, added 10ml of water and mixed. 5% wash.
Within 5 mins bio had split, have now got 55ml of darkbrown glyc and light bio on top.
Should i assume that the 5% wash aids the splitting?

[Julian]

Not sure what the mechanism was that made the water successful, but well done.  If it works on the main batch I think it would be worth documenting on the wiki.

[Julian]

Should i assume that the 5% wash aids the splitting?

After my recent mishap doing a 5% wash, I just ran a batch which was demethed very heavily, without doing a 5 or 7% wash.  Although it split well, draining the glycerin was a nightmare, the stuff was so thick that it must have been sticking to everything inside the processor.  I had to drain it 5 times and even then I didn't get it all out.  With a 5/7% wash the stuff drains quite easily and gives a really clean split with the bio.

I don't think it necessarily aids splitting, I suspect some other dark forces are at play giving you the problem you had, but a prewash certainly makes life easier an, as Mark has documented, gets rid of a hell of a lot of soap.

Out of interest my last batch was way under dosed with NaOH, and after an overnight bubble in the settling tank has a soap ppm of 3600 and something.  In comparison bio from 3 batches ago which was acid washed and put through a dry wash tower, gave a soap ppm of 45.

[Julian]

Sounds quite plausible and I've every respect for Graham, an exceptionally clever man, but any idea where he got the information from?

The longer I play this game the more I'm starting think many of the "rules" by which we work seem to originate from the annals of history without any provenance.  A bit like the 3/27 test being cloudy or coloured.  It would be great to have definitive proof of some of these things and stick them up on the wiki.

I believe Graham is well versed in chemistry and has a knowledge of the subject way beyond your average numb nut.

Unfortunately I've only had brief contact with Graham by email, so wasn't aware of his expertise in chemistry.  I fully accept GL as good provenance.

It just worries me that you can get the "send 3s. 4d. we're going to a dance" syndrome, when so much of the info on which we rely is passed by word of mouth.

[willbuild]

will try and re process tomorrow, 18% meth and 5gr Kohl.
Am not sure if 18% meth is to much?

[Jamesrl]

I've never heard of the 3/4d syndrome.

There are those who speak with such an air of authority about a subject that you accept what they say without question, Graham is one of those people in my mind.

[Julian]

I've never heard of the 3/4d syndrome.

There are those who speak with such an air of authority about a subject that you accept what they say without question, Graham is one of those people in my mind.

You were probably too old to be actively involved in the war, but it was an example of how messages got bastardised whilst being passed from one person to another ...  "Send reinforcements we're going to advance" became "Send 3/4 we're going to a dance".

[Julian]

will try and re process tomorrow, 18% meth and 5gr Kohl.
Am not sure if 18% meth is to much?

If it's passed a 3/27, and you've discovered a way of forcing the glycerin to drop, why are you looking at reprocessing?

[willbuild]

I didt do an acid wash.
Am going to try dr pepper test on 1ltr  using 200ml methanol and 8grs? of Kohl

it was the above sample that gave me the 3/27 pass and went on to drop the glyc when i did the 5% wash.
I've got 60 ltrs of it that leaves a white layer in the 50/50 test, this is what i want to reprocess

[Julian]

Ah, got it, sorry.  I must try and keep up.

You could probably get away with less methanol, but it won't do any harm to overdose.

[Jamesrl]

You were probably too old to be actively involved in the war, but it was an example of how messages got bastardised whilst being passed from one person to another ...  "Send reinforcements we're going to advance" became "Send 3/4 we're going to a dance".

Ah, right, I've always known that as Chinese Whispers.

[Julian]

Me too, but I thought that one was a well known example ... wrong again!

[Chug]

I was gonna make a new thread but it's related to this one, so what do folks reckon?

http://www.vegetableoildiesel.co.uk/mybbforum/showthread.php?tid=36081

[Julian]

Is that from one of the US sites, Chug?