mcdonalds oil

[alifreddy]

I had to use about 14 gs per litre to get oil to react is this normal do they use additives, the oil is liquid and supposedly rapeseed and sunflower.


I titrated it about 6 using sodium hydroxide solution so times by 1.4 then base amount 7.8 gs per litre of 90% koh

I started with just 600 gs for a 60 litre batch and no reaction had to add more to get a reaction

[willbuild]

base =7g per litre +6Gr's per litre = 13Gr's per litre times 60ltrs= 780Gr's total.
so if you have done in 2 stages you should of added 180Gr's on 2nd stage if tit value was correct.
If you did a 27/3 test after 1st stage you should of seen about 1ml of oil fall out

[willbuild]

and if you remove the glyc after the first stage it makes it easier for the remain oil to convert during the second stage.

[alifreddy]

no glycerol just stripes of it. I used sodium hydroxide tester solution so have to times by 1.4

[willbuild]

therefore base 7.8 + 8.4=16.2grs per ltr x 60ltrs = 972grs.
So you should of added 372grs on 2nd stage then mixed for at least 60 mins.
the last batch i did, after 60 mins on the 2nd stage i did't get a pass on a 27/3 test mixed for another 30 mins then it gave a clear pass.

[willbuild]

when i have a batch ready to process, i do a tit test and work out what cat is needed.
I then take a 1.5 ltr plastic bottle add 1 ltr of the oil then heat in the microwave to 50c ( make sure the Mrs don't see) add the metoxide and give it a good shake and leave for an hour.
then you do a 27/3 test on the bio that has been released.
this should give you an idea if your calcs are right. you can add another gr of cat if not fully converted shake and wait and so on. if you get a bottle of soap, then to much has been used, start test again using less

[whatarascal]

I had to use about 14 gs per litre to get oil to react is this normal do they use additives, the oil is liquid and supposedly rapeseed and sunflower.


I titrated it about 6 using sodium hydroxide solution so times by 1.4 then base amount 7.8 gs per litre of 90% koh

I started with just 600 gs for a 60 litre batch and no reaction had to add more to get a reaction

mcdonalds dont sell their oil to any of us ,or do they?

[alifreddy]

I get it through a middle man. got oil to fully react I know by dipping a lid top in top of processor a looking at the bio can tell by its colour. will see how much glycerol in morning

[1958steveflying]

got oil to fully react I know by dipping a lid top in top of processor a looking at the bio can tell by its colour. will see how much glycerol in morning

That's a novel way of testing for a full reaction !

[willbuild]

I get it through a middle man. got oil to fully react I know by dipping a lid top in top of processor a looking at the bio can tell by its colour. will see how much glycerol in morning

i got it now. this is a wind up

[Head Womble]

I get it through a middle man. got oil to fully react I know by dipping a lid top in top of processor a looking at the bio can tell by its colour. will see how much glycerol in morning

i got it now. this is a wind up

The new biohazard ?

[alifreddy]

I also do a 50/50 shake test but learnt if you dip the top of processor and its still a layer of methanol on ,it hasn't reacted. I was using the same oil in a copper tank that was heating to much higher temps and getting a reaction with much less koh

the koh I'm using has been left with lid off container and a bit old will this affect reaction

[whatarascal]

http://www.mcdonalds.co.uk/ukhome/whatmakesmcdonalds/questions/environmental-impact/renewable-energy/since-the-introduction-of-biodiesel-for-trucks-how-much-does-mcdonalds-save-on-fuel-annually.html

[julianf]

I get it through a middle man. got oil to fully react I know by dipping a lid top in top of processor a looking at the bio can tell by its colour. will see how much glycerol in morning

i got it now. this is a wind up

The new biohazard ?

Wasn't milbot from kings lynn?

[alifreddy]

think I went a bit overboard with koh added 200gs more mixed with a litre of methanol. heres a pic 50/50 shake test before abnd after dry washing might have to dry wash twice with this one