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Recovering methoxide from glyserin   Message List  
Reply | Forward Message #25964 of 26235 |
Re: [Biodiesel] Recovering methoxide from glyserin

Absolutely you can add your glycerin back to your oil. This is called
pre-reacting the oil. It will do you two things, it will remove "most" (the
methanol has more of an affinity for biodiesel than glycerin) of the methanol
form the glycerin and it will lower the titration number of the oil to be
reacted. I do this with every batch. I also add this glycerin (with the methanol
removed) back to the biodesel after it is finished reacting and before the first
wash. Ad the glycerin back to the biodiesel, then add water at a rate of 10% of
your total reaction. Then run your pump for about 20 minites and let it settle
again. The glycerin/water will remove a huge amount of soap from the bio. Then
you can water wash with ease! Your first wash can be done with a hose end
sprayer with no chance of emulsification. It will cut your wash time in1/2. Try
it! You'll be amazed at how well it works.


Carl Shortt III

________________________________

-THINK-
"Art, like morality, consists of drawing the line somewhere"-- G.K. Chesterson

________________________________






________________________________
From: John E. Grabe <johngrabe@...>
To: Biodiesel@yahoogroups.com
Sent: Wednesday, July 8, 2009 4:35:17 PM
Subject: [Biodiesel] Recovering methoxide from glyserin





I have noticed that after sitting for extended periods the gly by product
accumulates a layer of bio on top. I don't think that the bio existed when the
gly was first seperated. I rather think that the meth in the gly continued to
process the gly and formed the bio. Is this true?

I want to recover ALL the meth in the gly so I can make soap from it...safely.
I have heard it suggested to add new WVO to gly to improve the WVO in some way.
Is it viable to add the gly from the previous batch to the warmed oil and get
the meth reacted completely?

Thank you,

John




[Non-text portions of this message have been removed]




Thu Jul 9, 2009 3:28 am

clshortt1
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Message #25964 of 26235 |
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I have noticed that after sitting for extended periods the gly by product accumulates a layer of bio on top. I don't think that the bio existed when the gly...
John E. Grabe
johngrabe
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Jul 8, 2009
11:40 pm

I do the glycerol pretreatment step and have great sucess. It allows me to make great bio with less KOH and less methanol. That is the advantage. You can...
dougwene
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Jul 10, 2009
1:42 am

The BD that you eventually find in the glycerine was in the drained glycerine since it came out of the reactor. There is also BD that gets drained out with...
lotus3390@...
lsum8121
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Jul 10, 2009
2:22 am

I am new at this,  I am having a hard time getting the glycerine to seperate from the biodiesel, all I get is black runny liquid that turnes to gel when it...
morgan freeman
morganfrmn
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Jul 22, 2009
10:54 pm

Absolutely you can add your glycerin back to your oil. This is called pre-reacting the oil. It will do you two things, it will remove "most" (the methanol has...
Carl Shortt
clshortt1
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Jul 11, 2009
12:27 am

when demething glycerine it is recomended that the glycerine be heated to 240f for best results,this assures that the gly is no longer meth bound and is safe....
john1060@...
johnb1060
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Jul 11, 2009
12:27 am

Hello John, You do not make biodiesel from glycerine. The biodiesel you are seeing is in the glycerin layer when it settles. Tests have shown that the soap...
tillyfromparadise
tillyfrompar...
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Jul 14, 2009
10:38 am

If you take it to 240 F, then you will indeed have all the methanol out of the glycerine.... but your methanol will have a lot of water in it and cannot be...
lotus3390@...
lsum8121
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Jul 14, 2009
10:31 am

You will only get a meaningful amount of water out of the glycerine layer if you put it in. Distillation tests I performed showed that as long as you do not...
tillyfromparadise
tillyfrompar...
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Jul 14, 2009
10:43 am

Eric, Instead of distilling twice you could jusst collect the distillate up to a point where 100 ml of distillate weighs 80 gms as you suggest and then change...
Blaise Colasante
supervee03
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Jul 14, 2009
8:14 pm

indeed if you put water in  ,you get water out. but to meet epa and other environmental concerns,the methanol must be removed from the glycerine to properly...
john1060@...
johnb1060
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Jul 15, 2009
10:33 pm

Joe, Assuming that you are using 20% methanol, using sufficient catalyst (8 gm base + titration for KOH or 6 gm base + titration for NaOH), and processing at...
lotus3390@...
lsum8121
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Jul 23, 2009
2:17 am

I would check your oil that you are using sounds like there is water or something else in it. pb...
paulb3@...
nitro_fish
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Jul 23, 2009
4:49 am
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