Not seen this with titrated acid wash before.

[Julian]

This is what the stuff looked like when filtered ...



Still very wet.  Anyhow I tried heating a small sample and all that seemed to happen was bio/water ran out.  The solid reduced in volume and appeared to go a bit sticky, but by this time it was well over 32°C.

I tried wringing out a small sample, making a little "swag bag" like the salt you used to get in crisps.  This removed a bit more liquid ...




 I'll leave this in a warm place to see if I can dry it any more.

It may also be worth washing a sample in methanol to see if that will get rid of the bio.

So not really any further forward, it looks like it's probably not sodium sulfate.

[RichardP]

From a year ago on the VOD - http://www.vegetableoildiesel.co.uk/forum/viewthread.php?tid=18491&page=6#pid335354

I've seen this without and with acid washing.

[Julian]

From a year ago on the VOD - http://www.vegetableoildiesel.co.uk/forum/viewthread.php?tid=18491&page=6#pid335354

I've seen this without and with acid washing.

The VOD seems a bit reluctant to show some photos.  You mean this ...

[K.H]

That looks very similar to what Nathan had in his centrifuge when he posted up some pics, not sure if it was here or on the VOD

[Julian]

Wasn't Nathans stuff rather fatty/HMPEy?

Don't know about Richards stuff, but mine's more like sludge.

[1958steveflying]

Wasn't Nathans stuff rather fatty/HMPEy?

Don't know about Richards stuff, but mine's more like sludge.

Yes Nathan's was, while it looked a similar colour I think that was as far as it goes in similarity.

[K.H]

Wasn't Nathans stuff rather fatty/HMPEy?

Don't know about Richards stuff, but mine's more like sludge.

Yes Nathan's was, while it looked a similar colour I think that was as far as it goes in similarity.

Just going from memory, might need to see a doctor

[1958steveflying]

Wasn't Nathans stuff rather fatty/HMPEy?

Don't know about Richards stuff, but mine's more like sludge.

Yes Nathan's was, while it looked a similar colour I think that was as far as it goes in similarity.

Just going from memory, might need to see a doctor

Lol... a pic doesn't really show consistency... it is like soft candle wax to begin with and the more you heat it till it melts and let it harden again the firmer it becomes strangely.

[Jamesrl]

Just going from memory, might need to see a doctor

Blimey Geeza, if you've produced anything like that I'm surprised y'togger ain't dropped off........................................or has it already?

[Jamesrl]

Looks like the back of pair of Keef's pants I saw at the last BBB, they were hanging of the Joke Arial.

[jgs600]

so do we feel this is from acid washing, are we creating something else by adding acid..!!

[Julian]

I think, during acid washing, we must be creating something else from the soap, as Paul suggests, I'm just not now convinced that this brown gunk is necessarily it.

It would be nice to isolate it completely.  I think the fact that it's soaked in bio is making it look more voluminous than it actually is.

[Carrington]

Morning all can't stay for long.

Julian what acid did you use for your acid wash and did you mix it with water or just mix it into the bio prior to adding water.

Can you warm it gently then mix it with a drop of acetone 50/50  to see if it dissolves or sepperat's (this may take couple of hours )

I'm on the road all morning and evening so if anyone fancies a chat I can tape my phone to my head.
Also I think u can simplify the acid titration water wash just down to one calc only per batch (anyone interested in a little test


Paul

[Julian]

Morning all can't stay for long.

Julian what acid did you use for your acid wash and did you mix it with water or just mix it into the bio prior to adding water.

Can you warm it gently then mix it with a drop of acetone 50/50  to see if it dissolves or sepperat's (this may take couple of hours )

I'm on the road all morning and evening so if anyone fancies a chat I can tape my phone to my head.
Also I think u can simplify the acid titration water wash just down to one calc only per batch (anyone interested in a little test


Paul

I used concentrated sulfuric acid which was added to the was water.  Even so I guess it was quite strong, if I remember corerectly it was 400ml in 5 ltrs.

I can try it with acetone, but would I need to get rid of the bio / water which seems to form the slurry?

Don't we already do only one calculation, but yes, I'm up to give it a whirl doing almost no milage at the moment so it wont be for a while yet.

[Carrington]

Morning all can't stay for long.

Julian what acid did you use for your acid wash and did you mix it with water or just mix it into the bio prior to adding water.

Can you warm it gently then mix it with a drop of acetone 50/50  to see if it dissolves or sepperat's (this may take couple of hours )

I'm on the road all morning and evening so if anyone fancies a chat I can tape my phone to my head.
Also I think u can simplify the acid titration water wash just down to one calc only per batch (anyone interested in a little test


Paul

I used concentrated sulfuric acid which was added to the was water.  Even so I guess it was quite strong, if I remember corerectly it was 400ml in 5 ltrs.

I can try it with acetone, but would I need to get rid of the bio / water which seems to form the slurry?

Don't we already do only one calculation, but yes, I'm up to give it a whirl doing almost no milage at the moment so it wont be for a while yet.

Hi Julian
No leave the slurry I'm hoping that all the slurry will disolve in the acetone and leave just the product we are trying to identify.

When I say 1 calc I meen just one for all future batch's as long as you use the same acid be it vinegar or brick acid or sulphuric.

For the suphuric 96% I can do the calc for the next person doing this process

Paul