Author Topic: 5% water wash (Read 1572 times)

willbuild · « **on:** October 06, 2015, 12:34:14 PM »

What would be the least amount of glycerol that should be present when doing the wash?
After the wash I settle out the glycerol then do an acid wash followed by 3 or 4 water washes.

nigelb · « **Reply #1 on:** October 06, 2015, 04:09:03 PM »

The minimum amount would be what's left after your second stage reaction...assuming you employ a two stage reaction.

willbuild · « **Reply #2 on:** October 06, 2015, 05:57:12 PM »

Yes I do 2 stagesand had 85% conversion on 1st stage.
I've done a 5% wash with just the glycerol from the 2nd stage and its now settling.
Sample is murky but not an emulsion.

nigelb · « **Reply #3 on:** October 06, 2015, 07:23:02 PM »

Murky orange juice is the consistancy you're looking for. So long as there is seperation in your jug sample, you're good to go

willbuild · « **Reply #4 on:** October 06, 2015, 08:25:42 PM »

Seperated quite quick, turned out that there was about 8% glycerol in the volume of bio.
It's now had an acid wash and I'll leave overnight.

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5% water wash