Author Topic: Question (Read 2316 times)

dgs · « **on:** May 21, 2019, 08:18:37 PM »

This subject recently came up on Rossey's facebook page and it is something I have asked myself before.

Is there any difference in the final bio colour between Sodium and Potassium?

if anyone knows please reply (it will save me doing a test) Maybe Chug could remember any oid posts on infopop, could have been something 'Neutral" did in the past.

Dickjotec · « **Reply #1 on:** May 21, 2019, 08:43:59 PM »

I process with sodium and can send a pic of the colour if that helps.

dgs · « **Reply #2 on:** May 21, 2019, 09:48:32 PM »

Quote from: Dickjotec on May 21, 2019, 08:43:59 PM

I process with sodium and can send a pic of the colour if that helps.

Hi Dickjotec, thanks but to do a comparative test you would have to use the same oil for a separate process with sodium and potassium. (I probably didn't explain myself properly in the original post)

Dickjotec · « **Reply #3 on:** May 22, 2019, 09:10:24 AM »

Yes, see what you mean I hadn’t thought of that.

nigelb · « **Reply #4 on:** May 22, 2019, 02:14:55 PM »

Not really sure why the colour of the bio should have any relevance.
From a personal point of view it's the colour of the raw oil that'll have the most direct influence on the finished fuel.

dgs · « **Reply #5 on:** May 22, 2019, 03:59:46 PM »

Yes and Yes Nige. Just that someone on the facebook group has recently changed to K from Na and he thinks his bio is darker using the same oil.

I'm just surprised that none of the 'older hands ' on here know the answer. It surely is a question that has been asked before?

Chug · « **Reply #6 on:** May 22, 2019, 09:24:43 PM »

I haven't come across this one before, but as its only the catalyst I wouldn't expect it to be affecting the colour, but who knows?
it needs someone with both chems to do a couple of Dr Pepper batches with the same oil.

nigelb · « **Reply #7 on:** May 22, 2019, 09:49:10 PM »

Maybe something to cook up at the BBB?

Julian · « **Reply #8 on:** May 22, 2019, 11:44:56 PM »

I'm happy with any colour … just so long as it doesn't form an emulsion whilst washing.

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