Hi!

I am new to homebrewing biodiesel. I would like to ask... after i let the BioD Settle the Top part is the BioD and the Bottom part (darker brown layer) is the GLycerin.

How can i Remove the glycerol? is this done by WASHING? Or are there any separate process in removing the glycerol?

Please help

Thanks!

Just drain the glycerin from the bottom or suck the bio from the top.

Getting glycerin into your wash tank is bad. Do not let it happen.

you should wqait 8 hours for separating. f you use conic tank ,it will be better for you. then raw BD is ready for wasigg ( you can use water or magnesol )
g

quote:

Originally posted by 30:
you should wqait 8 hours for separating. f you use conic tank ,it will be better for you. then raw BD is ready for wasigg ( you can use water or magnesol )
g

Don't think such a lengthy settling time is required if you use the 5% water pre-wash. I'd say 99% drops out in two hours - some people start washing after one.

Hi,

Thanks alot guys for all the advises! If i brew around 5-10 Liters. Can you recommend a Tool that i could use? to suck the BioD?

Thanks Again.

quote:

Originally posted by AbrahamLin:
Hi,

Thanks alot guys for all the advises! If i brew around 5-10 Liters. Can you recommend a Tool that i could use? to suck the BioD?

Thanks Again.

I was making 1 and 2 liter batches for a while.. Turkey baisters dont work.. The rubber bulb you squeeze will deteriorate within the first few minutes..

Hi all,
You can just start a siphon using a clear piece of vinyl hose. Just a thought. Good luck! Chris Rice

I use a submersible pond pump to suck the washed biodiesel off the last wash water. I think it would be best to setup a standpipe in the wash tank, but for now the little pump works great.
This is what they look like.
http://www.homedepot.com/prel80/HDUS/EN_US/diy_main/pg_...fdfgidgml.0&MID=9876
Sorry about the long link. I haven't figured out to add a Hyperlink to a word. Control l does something else here.
Anyway, I had one that a friend donated. I don't guess buying one is economical.
I drop it in the 55 gallon barrel to just below the surface and it fills fuel cans pretty quick
Brian Rodgers

Hi,

I will try to look for a Small Syphon Or a Small Pond Pump. Syphon is a plastic their should be no effect since what you will suck is a BioD not a pure Methanol Or liquid with lye.

Thanks!

I just performed an experiment of sorts with glycerol in wash water.

I made my first 50 gallon batch in a 75 gallon processor, using 11 gallons of methanol and 3 gallons of prewash. It settled overnight, and I drained off most of the glycerol from the bottom, but I didn't want to babysit it and get it all out before washing.

I have always started my wash by adding 10 gallons of water into the wash tank first, then pumping the bio on top. With a 50 gallon batch, I have to split it into two tanks, each with 10 gallons of water. So the first tank got the glycerol remnants, and the second did not. Both sat on the water for 36 hours. The first tank drained off soapy water, the second tank drained off clear water. And now that I am bubbling both tanks, they are both producing soap like normal.

Results? This is how I interpret it: A bit of glycerol is fine in a wash tank without much mixing. Just let it settle out into the water and drain it before the active washing begins.