Author Topic: Gloopy bio when settled? (Read 11640 times)

db · « **Reply #15 on:** October 14, 2012, 09:05:16 PM »

Quote from: K.H on October 14, 2012, 08:55:50 PM

If i hadn't read the rape bit i would say its just gelling because of the cold and contained palm oil

Yeah, Sometimes it's difficult to know what's in the round blue Pandora's box when collecting. I'm gonna stick it in microwave now.

My cars seem to be running ok, though the sender unit in the 106 sometimes sticks.

I've thought about fitting a FPHE from when I used to run on veg to help out a little in winter.

db · « **Reply #16 on:** October 14, 2012, 09:12:05 PM »

Iv'e just nuked it in the micowave and it all appears to have cleared. Lets see how it cools.

Julian · « **Reply #17 on:** October 14, 2012, 09:32:29 PM »

If it stays clear when it's cool, try sticking the sample in the fridge for 24 - 48 hours and see if they return.

I have had HMPEs that manifest themselves in wispy, cloud like formations in the past.

Tony · « **Reply #18 on:** October 14, 2012, 09:56:40 PM »

Yup same here. You can't fix it by adding petrol either. I'd love to know if there was a way to keep it liquid...

Head Womble · « **Reply #19 on:** October 14, 2012, 11:34:32 PM »

I was talking to CHUNDER the other week and he said acetone breaks down fats in veg oil,
I wonder if it can do this for HMPE's in bio.

Tony · « **Reply #20 on:** October 14, 2012, 11:51:28 PM »

Would be worth a shot, though if petrol doesn't help I'm not sure Acetone would. Perhaps with WVO it helps separate water from oil (we know wet oil can look like fats, all white and creamy).

db · « **Reply #21 on:** October 17, 2012, 08:07:31 PM »

I've just realised, I'm using up 5 mic filters, not 1mic as stated earlier!! Think I'd best get some more 1 mic which will help.
I'm gonna start pouring the gloopbit into a seperate tub and to use in summer I think just as an extra precaution.

Thanks guys for comments.

Julian · « **Reply #22 on:** October 17, 2012, 08:14:25 PM »

Did we ever work out what it was? What were the results of heating?

db · « **Reply #23 on:** October 17, 2012, 08:30:32 PM »

The heating seemed to clear it up, but when cooled down it went cloudy. When I sttod the sample back in the garage overnight I got some settlement in the bottom of the jar. I'm presuming it's the start of hmpe's.

Julian · « **Reply #24 on:** October 17, 2012, 08:46:16 PM »

If it looks like a wispy, cloud of precipitate, could well be.

db · « **Reply #25 on:** October 17, 2012, 09:19:36 PM »

Quote from: Julian on October 17, 2012, 08:46:16 PM

If it looks like a wispy, cloud of precipitate, could well be.

Yes, it does when shaken.

Julian · « **Reply #26 on:** October 17, 2012, 09:25:56 PM »

The HMPEs I've seen form in a DSS, are very close to the density of Bio and form as a cloud within the sample. They can take a day or so to settle.

If your precipitate drops quickly and needs shaking to be visible, it may not be HMPEs ... helpful aren't we!

Head Womble · « **Reply #27 on:** October 17, 2012, 09:58:09 PM »

Surely this is just wights reaching their gel point,
we all know that frozen chips are pre-blanched in palm oil which then migrates into the frying oil,
this is the gloppy stuff at the bottom of our drums.

Knowing that bio made from palm oil has a gel point of around 10°c, surely this is what is happening.

Tony · « **Reply #28 on:** October 17, 2012, 10:51:39 PM »

Quote from: Tony on October 14, 2012, 08:50:03 PM

Looks like HMPEs to me, pop it in the microwave and heat, bet it clears, then slowly reforms as it cools (but with less).

Told you so

HMPEs alright, though don't ask me to explain why heating and cooling results in less of them forming.

K.H · « **Reply #29 on:** October 17, 2012, 10:56:16 PM »

Im with Mark on this one

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Gloopy bio when settled?