mcdonalds oil

[alifreddy]

thanks. I have some new koh. only heated to 55 degrees. did a 50/50 test and still very soapy read on another forum if u bubble it . the methanol with come out and soaps will fall out

[julianf]

you are right in thinking that, once the methanol is removed, the soaps will precipitate / settle out, but you will be there forever trying to bubble a load of methanol off cold bio.  as in it will take so very long its not (in my experience) worth trying.

another real consideration if youre trying to do this is where the methanol is actually going - its a toxic / explosive gas.  if you fill your shed with it by bubbling only, then what happens when you go in to check?

most people who remove methanol without water use a venturi, and run the setup at about 85c, which is way hotter than youre trying to bubble.

 
I think you need to look into one of three things - all of which will appear hard (but that's why only a small percentage of the population make bio!)

1) a venturi
2) a suitable meth vapor extraction system
3) water washing

Only one is needed - you can choose which.

[alifreddy]

dry washed it through buckets half filled with hardwood sawdust with holes drilled in bottom on a clothes rail there seems to be scum on top which appears very soapy after dry washing passing it through a 1 micron sock then bubble drying in a cubie its all I have atm. I tried water washing but it takes ages to dry.

I was given some distilled vinegar when I bought my processor I read that you need to get bio to ph 7 before water washing is this the same for bio and dry washing???

[therecklessengineer]

heated oil in processor then drained a litre or 2 off the bottom

Here's another problem. I suspect that there is still lots of water in suspension in your oil. 2 liters out of a 65 liter batch is a huge amount. Add water, oil and KOH and you get soap, not biodiesel.

Others do it differently, but I heat to 110 degrees and circulate through a spray bar. I don't get anything out of the bottom, but the plant room turns into a sauna when I do this.

http://www.biopowered.co.uk/wiki/Drying_wet_biodiesel

[willbuild]

My advice is, pour it all into a settling tank, leave it for 3 or 4 days.
then take off the bio/oil.
then re process following the correct procedure as described by others for you here on this forum.
You should find that a large % of the water and soap will drop out into the bottom of the settling tank therefore making the bio/oil  easier to convert.

[whatarascal]

My advice is get a loan from Wonga dot com and buy one of jims processors he will also give you a complete tutorial

[Jamesrl]

Alifreddy,

From what I've read in most of your posts I would advise you to forget all you think you know and start again.

First thing, get yourself a decent safe plant and find someone to mentor you until you have the making of bio mastered.

[Jamesrl]

My advice is get a loan from Wonga dot com and buy one of jims processors he will also give you a complete tutorial

You got shares in Wonga, what's wrong with the myriad other ripoff loan sharks?

Strange how only a few years ago loan sharking was illegal.

P.S.

Thanks for the recommendation.

[1958steveflying]

It seems to me that you are not following the process from A to Z but jumping back and forth in the process. It would not be appropriate to do the 50/50 soap test until the Methanol is removed in it's entirety.  If you are dry washing before this then your media will be saturated with soap in a single pass and rendered useless, if it is going thru a bucket then meth fumes are being released. I am not convinced that you are carrying out safe practises in your attempt to make Bio.    Sorry to say but my best advise would be to sell your oil on at a profit and buy Derv !

For others to help it may be an idea for you to bullet point your procedure from getting your oil to having it ready for your van,  then maybe a few pointers will come your way.