more chinese oil with water and gloopy fully converted to bio

[julianf]

this was before I started titrating  thanks for everyone's advise.On cooling the bio has gone thick again and has a small dropout in the 27/3 test so will reheat and add the 150gs of koh to 1 litre of methanol to 40 litres of bio

Why 150g? 

[julianf]

Out of interest, are you really saving by using bio?

What i mean is, if you keep damaging things by using poor quality fuel, wouldnt you save money by just buying diesel at the pumps, and not having to spend out so much on repairs to your motors?

[julianf]

33% of the base value x the volume remaining in the reactor (which may not be the same as the initial volume, at the start of S1)

before or after removing the glycerol?

After glycerol removal. 

If you think about this as a process, rather than just a load of numbers, you can see that we're only worried about the part we are interested in. 

So, we remove the glycerol, as we're not interested in that, see the remaining volume on the sight tube, see what the conversion is, using the 90/10 etc. and then do the sums to work out the actual quantity of tri-glyceride remaining - then dose for these, with the assumption that the FFAs have been neutralised (so the base value alone, not the base+titration)

[alifreddy]

yes I am saving only cost 150 to repair my van I've done about 20 k since may and started making bio in august

[thewormman]

the FFAs (which are the bit that youre measuring with the titration), are neutralised.

this is just one of the three main reactions - the "acid + base <> salt + water" reaction.

I read somewhere there needs to be water present in this reaction as a catalyst. It then produces water in the reaction so replaces whats used is that true?

[julianf]

I've done about 20 k since may and started making bio in august

20,000 / 3 = 6666

6666 x 12 = 80,000 (projected)

2500 / 4.54609 = 550 gallons

80,000 (projected) / 550 = 145 mpg

Again, id really suggest you start paying more attention.

[julianf]

the FFAs (which are the bit that youre measuring with the titration), are neutralised.

this is just one of the three main reactions - the "acid + base <> salt + water" reaction.

I read somewhere there needs to be water present in this reaction as a catalyst. It then produces water in the reaction so replaces whats used is that true?

Im not sure, but i suspect not.  But, again, im not certain.

Id have to look it up, but i thought that it was the saponification reaction that needed water, but did not remove it?

[thewormman]

Hmmm ok you know what it's like you read and read and the brain confuses things, I will go back and review what I read properly 

[Jamesrl]

the FFAs (which are the bit that youre measuring with the titration), are neutralised.

this is just one of the three main reactions - the "acid + base <> salt + water" reaction.

I read somewhere there needs to be water present in this reaction as a catalyst. It then produces water in the reaction so replaces whats used is that true?

The neutralization of FFAs generates water, H2O + NaOH + Triglyceride = Soap.

Mixing lye with methanol also generates H2O, more soap.

Therefore the higher the FFAs/titration the greater the soap volume and the lower the yield.


Even if your wvo is absolutely bone dry and you use ASM there'll be some soap production.

Hth Dave.

[Glycer-rides]

if the water on your 50/50 test is not clear, then there is  soap in your bio. In the medium to long term when it burns in your engine it leaves traces of ash which will abrade and damage the seats on the exhaust valves and if they dont close snug then you will lose compression. Not cheap to repair.

Interesting; is this from a scientific paper you've seen or from your experience?
True that valve seat recession happens, usually in petrol engine...and is a bad thing! Is it common with diesels?

In terms of the chemistry of soap, the only 'different' part of the make up compared to bio is the sodium or potassium, both metals that are very reactive, thus would burn well (?). Also metal additives were added to fuel for lubrication, lead being the best known.
One would expect that running on wvo might produce far more abrasive elements per volume from sub-micron particles of 'god knows what' along with sub micron carbon particulates (a.k.a. teeny BCBs).

Just my ramblings....discuss!

[alifreddy]

I think that was the problem I was running on filtered wvo for a good year. I noticed as soon as I put in bio my car derived van would be as if starving of fuel a blockage sometimes and wouldn't run under half a tank. after removing the cat and putting 25 pounds worth of diesel in after completely draining the tank my van is fine now. I slowly added neat bio until now its on 100%

Its on 237 k so interesting to see how long it lasts it has lots of go will do 75 and still wants to go faster.

After the mechanic removed the cat it was still smoking and did break down again so not entirely sure it was the cat but wanted it removed anyway

[1958steveflying]

Mate you need to upgrade your testing to a 10/90 ! the 27/3 is not really as accurate as it could be for making good Bio. Good measuring flasks are sold by a couple of people on here or VOD.

[willbuild]

if the water on your 50/50 test is not clear, then there is  soap in your bio. In the medium to long term when it burns in your engine it leaves traces of ash which will abrade and damage the seats on the exhaust valves and if they dont close snug then you will lose compression. Not cheap to repair.

Interesting; is this from a scientific paper you've seen or from your experience?
True that valve seat recession happens, usually in petrol engine...and is a bad thing! Is it common with diesels?

In terms of the chemistry of soap, the only 'different' part of the make up compared to bio is the sodium or potassium, both metals that are very reactive, thus would burn well (?). Also metal additives were added to fuel for lubrication, lead being the best known.
One would expect that running on wvo might produce far more abrasive elements per volume from sub-micron particles of 'god knows what' along with sub micron carbon particulates (a.k.a. teeny BCBs).

Just my ramblings....discuss!

Read on another forum, so could be just ramblins