Yes,you are correct,absolutley loaded with soap.
When the glycerol is "cracked" with conc sulphuric,the middle layer (glycerol) contains no soap (it's wet and very acidic,but no soap)
I re-neutralise this with KOH in water and bring it back to pH 7.0
I then mix this with my bio(when dropout test passed)
Three washes with this brings the soap level down from @ 3000ppm to <200ppm.
The good thing is that it can be used several times before being less effective.
My friend from the commercial factory told me about this years ago. First time I was in 2 minds to add it-scary!
Makes the lovely clear bio go all murky, but boy does it work well.
No need to de-meth or bubble wash,just go ahead and pump wash.
When I put up the post re shake-up test I had been experimenting using virgin Glycerine as the last wash and obviously not got rid of it all,
Thanks Dave, that clears things up for me. I didn't realize that you where splitting the glycerin out. If I remember correctly the methanol remains in the glycerin layer.
" I don't know what I don't know until I know"
1994 GMC 6.5 Tubo 2005 Dodge ram 3500, 3 VW's 2000, 2002, 2005.
Yes I think your correct,and also If the methanol is left in the glycerol it seems to give a "cleaner"split.
It will be interesting to see how long the pure glycerine lasts before it doesn't absorb the soap as well.
At the moment I just use it for the last glyc wash,I only use @ 10-15 litres of glyc for each wash for 300 litres of bio.
The disadvantage of the pure glycerine is the cost.It has reduced in price recently but is still £40/20 litres.
|Powered by Social Strata||Page 1 2|